--- /dev/null
+ =========================
+ MN10300 FUNCTION CALL ABI
+ =========================
+
+=======
+GENERAL
+=======
+
+The MN10300/AM33 kernel runs in little-endian mode; big-endian mode is not
+supported.
+
+The stack grows downwards, and should always be 32-bit aligned. There are
+separate stack pointer registers for userspace and the kernel.
+
+
+================
+ARGUMENT PASSING
+================
+
+The first two arguments (assuming up to 32-bits per argument) to a function are
+passed in the D0 and D1 registers respectively; all other arguments are passed
+on the stack.
+
+If 64-bit arguments are being passed, then they are never split between
+registers and the stack. If the first argument is a 64-bit value, it will be
+passed in D0:D1. If the first argument is not a 64-bit value, but the second
+is, the second will be passed entirely on the stack and D1 will be unused.
+
+Arguments smaller than 32-bits are not coelesced within a register or a stack
+word. For example, two byte-sized arguments will always be passed in separate
+registers or word-sized stack slots.
+
+
+=================
+CALLING FUNCTIONS
+=================
+
+The caller must allocate twelve bytes on the stack for the callee's use before
+it inserts a CALL instruction. The CALL instruction will write into the TOS
+word, but won't actually modify the stack pointer; similarly, the RET
+instruction reads from the TOS word of the stack, but doesn't move the stack
+pointer beyond it.
+
+
+ Stack:
+ | |
+ | |
+ |---------------| SP+20
+ | 4th Arg |
+ |---------------| SP+16
+ | 3rd Arg |
+ |---------------| SP+12
+ | D1 Save Slot |
+ |---------------| SP+8
+ | D0 Save Slot |
+ |---------------| SP+4
+ | Return Addr |
+ |---------------| SP
+ | |
+ | |
+
+
+The caller must leave space on the stack (hence an allocation of twelve bytes)
+in which the callee may store the first two arguments.
+
+
+============
+RETURN VALUE
+============
+
+The return value is passed in D0 for an integer (or D0:D1 for a 64-bit value),
+or A0 for a pointer.
+
+If the return value is a value larger than 64-bits, or is a structure or an
+array, then a hidden first argument will be passed to the callee by the caller:
+this will point to a piece of memory large enough to hold the result of the
+function. In this case, the callee will return the value in that piece of
+memory, and no value will be returned in D0 or A0.
+
+
+===================
+REGISTER CLOBBERING
+===================
+
+The values in certain registers may be clobbered by the callee, and other
+values must be saved:
+
+ Clobber: D0-D1, A0-A1, E0-E3
+ Save: D2-D3, A2-A3, E4-E7, SP
+
+All other non-supervisor-only registers are clobberable (such as MDR, MCRL,
+MCRH).
+
+
+=================
+SPECIAL REGISTERS
+=================
+
+Certain ordinary registers may carry special usage for the compiler:
+
+ A3: Frame pointer
+ E2: TLS pointer
+
+
+==========
+KERNEL ABI
+==========
+
+The kernel may use a slightly different ABI internally.
+
+ (*) E2
+
+ If CONFIG_MN10300_CURRENT_IN_E2 is defined, then the current task pointer
+ will be kept in the E2 register, and that register will be marked
+ unavailable for the compiler to use as a scratch register.
+
+ Normally the kernel uses something like:
+
+ MOV SP,An
+ AND 0xFFFFE000,An
+ MOV (An),Rm // Rm holds current
+ MOV (yyy,Rm) // Access current->yyy
+
+ To find the address of current; but since this option permits current to
+ be carried globally in an register, it can use:
+
+ MOV (yyy,E2) // Access current->yyy
+
+ instead.
+
+
+===============
+SYSTEM CALL ABI
+===============
+
+System calls are called with the following convention:
+
+ REGISTER ENTRY EXIT
+ =============== ======================= =======================
+ D0 Syscall number Return value
+ A0 1st syscall argument Saved
+ D1 2nd syscall argument Saved
+ A3 3rd syscall argument Saved
+ A2 4th syscall argument Saved
+ D3 5th syscall argument Saved
+ D2 6th syscall argument Saved
+
+All other registers are saved. The layout is a consequence of the way the MOVM
+instruction stores registers onto the stack.
--- /dev/null
+ =========================================
+ PART-SPECIFIC SOURCE COMPARTMENTALISATION
+ =========================================
+
+The sources for various parts are compartmentalised at two different levels:
+
+ (1) Processor level
+
+ The "processor level" is a CPU core plus the other on-silicon
+ peripherals.
+
+ Processor-specific header files are divided among directories in a similar
+ way to the CPU level:
+
+ (*) include/asm-mn10300/proc-mn103e010/
+
+ Support for the AM33v2 CPU core.
+
+ The appropriate processor is selected by a CONFIG_MN10300_PROC_YYYY option
+ from the "Processor support" choice menu in the arch/mn10300/Kconfig file.
+
+
+ (2) Unit level
+
+ The "unit level" is a processor plus all the external peripherals
+ controlled by that processor.
+
+ Unit-specific header files are divided among directories in a similar way
+ to the CPU level; not only that, but specific sources may also be
+ segregated into separate directories under the arch directory:
+
+ (*) include/asm-mn10300/unit-asb2303/
+ (*) arch/mn10300/unit-asb2303/
+
+ Support for the ASB2303 board with an ASB2308 daughter board.
+
+ (*) include/asm-mn10300/unit-asb2305/
+ (*) arch/mn10300/unit-asb2305/
+
+ Support for the ASB2305 board.
+
+ The appropriate processor is selected by a CONFIG_MN10300_UNIT_ZZZZ option
+ from the "Unit type" choice menu in the arch/mn10300/Kconfig file.
+
+
+============
+COMPILE TIME
+============
+
+When the kernel is compiled, symbolic links will be made in the asm header file
+directory for this arch:
+
+ include/asm-mn10300/proc => include/asm-mn10300/proc-YYYY/
+ include/asm-mn10300/unit => include/asm-mn10300/unit-ZZZZ/
+
+So that the header files contained in those directories can be accessed without
+lots of #ifdef-age.
+
+The appropriate arch/mn10300/unit-ZZZZ directory will also be entered by the
+compilation process; all other unit-specific directories will be ignored.
W: http://www.linux-mm.org
S: Maintained
+MEI MN10300/AM33 PORT
+P: David Howells
+M: dhowells@redhat.com
+P: Koichi Yasutake
+M: yasutake.koichi@jp.panasonic.com
+L: linux-am33-list@redhat.com
+W: ftp://ftp.redhat.com/pub/redhat/gnupro/AM33/
+S: Maintained
+
MEMORY TECHNOLOGY DEVICES (MTD)
P: David Woodhouse
M: dwmw2@infradead.org
--- /dev/null
+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+
+mainmenu "Linux Kernel Configuration"
+
+config MN10300
+ def_bool y
+
+config AM33
+ def_bool y
+
+config MMU
+ def_bool y
+
+config HIGHMEM
+ def_bool n
+
+config NUMA
+ def_bool n
+
+config UID16
+ def_bool y
+
+config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+config RWSEM_XCHGADD_ALGORITHM
+ bool
+
+config GENERIC_HARDIRQS_NO__DO_IRQ
+ def_bool y
+
+config GENERIC_CALIBRATE_DELAY
+ def_bool y
+
+config GENERIC_FIND_NEXT_BIT
+ def_bool y
+
+config GENERIC_HWEIGHT
+ def_bool y
+
+config GENERIC_TIME
+ def_bool y
+
+config GENERIC_BUG
+ def_bool y
+
+config QUICKLIST
+ def_bool y
+
+config ARCH_HAS_ILOG2_U32
+ def_bool y
+
+config ARCH_SUPPORTS_AOUT
+ def_bool n
+
+# Use the generic interrupt handling code in kernel/irq/
+config GENERIC_HARDIRQS
+ def_bool y
+
+config HOTPLUG_CPU
+ def_bool n
+
+mainmenu "Matsushita MN10300/AM33 Kernel Configuration"
+
+source "init/Kconfig"
+
+
+menu "Matsushita MN10300 system setup"
+
+choice
+ prompt "Unit type"
+ default MN10300_UNIT_ASB2303
+ help
+ This option specifies board for which the kernel will be
+ compiled. It affects the external peripherals catered for.
+
+config MN10300_UNIT_ASB2303
+ bool "ASB2303"
+
+config MN10300_UNIT_ASB2305
+ bool "ASB2305"
+
+endchoice
+
+choice
+ prompt "Processor support"
+ default MN10300_PROC_MN103E010
+ help
+ This option specifies the processor for which the kernel will be
+ compiled. It affects the on-chip peripherals catered for.
+
+config MN10300_PROC_MN103E010
+ bool "MN103E010"
+ depends on MN10300_UNIT_ASB2303 || MN10300_UNIT_ASB2305
+ select MN10300_PROC_HAS_TTYSM0
+ select MN10300_PROC_HAS_TTYSM1
+ select MN10300_PROC_HAS_TTYSM2
+
+endchoice
+
+choice
+ prompt "Processor core support"
+ default MN10300_CPU_AM33V2
+ help
+ This option specifies the processor core for which the kernel will be
+ compiled. It affects the instruction set used.
+
+config MN10300_CPU_AM33V2
+ bool "AM33v2"
+
+endchoice
+
+config FPU
+ bool "FPU present"
+ default y
+ depends on MN10300_PROC_MN103E010
+
+choice
+ prompt "CPU Caching mode"
+ default MN10300_CACHE_WBACK
+ help
+ This option determines the caching mode for the kernel.
+
+ Write-Back caching mode involves the all reads and writes causing
+ the affected cacheline to be read into the cache first before being
+ operated upon. Memory is not then updated by a write until the cache
+ is filled and a cacheline needs to be displaced from the cache to
+ make room. Only at that point is it written back.
+
+ Write-Through caching only fetches cachelines from memory on a
+ read. Writes always get written directly to memory. If the affected
+ cacheline is also in cache, it will be updated too.
+
+ The final option is to turn of caching entirely.
+
+config MN10300_CACHE_WBACK
+ bool "Write-Back"
+
+config MN10300_CACHE_WTHRU
+ bool "Write-Through"
+
+config MN10300_CACHE_DISABLED
+ bool "Disabled"
+
+endchoice
+
+menu "Memory layout options"
+
+config KERNEL_RAM_BASE_ADDRESS
+ hex "Base address of kernel RAM"
+ default "0x90000000"
+
+config INTERRUPT_VECTOR_BASE
+ hex "Base address of vector table"
+ default "0x90000000"
+ help
+ The base address of the vector table will be programmed into
+ the TBR register. It must be on 16MiB address boundary.
+
+config KERNEL_TEXT_ADDRESS
+ hex "Base address of kernel"
+ default "0x90001000"
+
+config KERNEL_ZIMAGE_BASE_ADDRESS
+ hex "Base address of compressed vmlinux image"
+ default "0x90700000"
+
+endmenu
+
+config PREEMPT
+ bool "Preemptible Kernel"
+ help
+ This option reduces the latency of the kernel when reacting to
+ real-time or interactive events by allowing a low priority process to
+ be preempted even if it is in kernel mode executing a system call.
+ This allows applications to run more reliably even when the system is
+ under load.
+
+ Say Y here if you are building a kernel for a desktop, embedded
+ or real-time system. Say N if you are unsure.
+
+config PREEMPT_BKL
+ bool "Preempt The Big Kernel Lock"
+ depends on PREEMPT
+ default y
+ help
+ This option reduces the latency of the kernel by making the
+ big kernel lock preemptible.
+
+ Say Y here if you are building a kernel for a desktop system.
+ Say N if you are unsure.
+
+config MN10300_CURRENT_IN_E2
+ bool "Hold current task address in E2 register"
+ default y
+ help
+ This option removes the E2/R2 register from the set available to gcc
+ for normal use and instead uses it to store the address of the
+ current process's task_struct whilst in the kernel.
+
+ This means the kernel doesn't need to calculate the address each time
+ "current" is used (take SP, AND with mask and dereference pointer
+ just to get the address), and instead can just use E2+offset
+ addressing each time.
+
+ This has no effect on userspace.
+
+config MN10300_USING_JTAG
+ bool "Using JTAG to debug kernel"
+ default y
+ help
+ This options indicates that JTAG will be used to debug the kernel. It
+ suppresses the use of certain hardware debugging features, such as
+ single-stepping, which are taken over completely by the JTAG unit.
+
+config MN10300_RTC
+ bool "Using MN10300 RTC"
+ depends on MN10300_PROC_MN103E010
+ default n
+ help
+
+ This option enables support for the RTC, thus enabling time to be
+ tracked, even when system is powered down. This is available on-chip
+ on the MN103E010.
+
+config MN10300_WD_TIMER
+ bool "Using MN10300 watchdog timer"
+ default y
+ help
+ This options indicates that the watchdog timer will be used.
+
+config PCI
+ bool "Use PCI"
+ depends on MN10300_UNIT_ASB2305
+ default y
+ help
+ Some systems (such as the ASB2305) have PCI onboard. If you have one
+ of these boards and you wish to use the PCI facilities, say Y here.
+
+ The PCI-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>, contains valuable
+ information about which PCI hardware does work under Linux and which
+ doesn't.
+
+source "drivers/pci/Kconfig"
+
+source "drivers/pcmcia/Kconfig"
+
+menu "MN10300 internal serial options"
+
+config MN10300_PROC_HAS_TTYSM0
+ bool
+ default n
+
+config MN10300_PROC_HAS_TTYSM1
+ bool
+ default n
+
+config MN10300_PROC_HAS_TTYSM2
+ bool
+ default n
+
+config MN10300_TTYSM
+ bool "Support for ttySM serial ports"
+ depends on MN10300
+ default y
+ select SERIAL_CORE
+ help
+ This option enables support for the on-chip serial ports that the
+ MN10300 has available.
+
+config MN10300_TTYSM_CONSOLE
+ bool "Support for console on ttySM serial ports"
+ depends on MN10300_TTYSM
+ select SERIAL_CORE_CONSOLE
+ help
+ This option enables support for a console on the on-chip serial ports
+ that the MN10300 has available.
+
+#
+# /dev/ttySM0
+#
+config MN10300_TTYSM0
+ bool "Enable SIF0 (/dev/ttySM0)"
+ depends on MN10300_TTYSM && MN10300_PROC_HAS_TTYSM0
+ help
+ Enable access to SIF0 through /dev/ttySM0 or gdb-stub
+
+choice
+ prompt "Select the timer to supply the clock for SIF0"
+ default MN10300_TTYSM0_TIMER8
+ depends on MN10300_TTYSM0
+
+config MN10300_TTYSM0_TIMER8
+ bool "Use timer 8 (16-bit)"
+
+config MN10300_TTYSM0_TIMER2
+ bool "Use timer 2 (8-bit)"
+
+endchoice
+
+#
+# /dev/ttySM1
+#
+config MN10300_TTYSM1
+ bool "Enable SIF1 (/dev/ttySM1)"
+ depends on MN10300_TTYSM && MN10300_PROC_HAS_TTYSM1
+ help
+ Enable access to SIF1 through /dev/ttySM1 or gdb-stub
+
+choice
+ prompt "Select the timer to supply the clock for SIF1"
+ default MN10300_TTYSM0_TIMER9
+ depends on MN10300_TTYSM1
+
+config MN10300_TTYSM1_TIMER9
+ bool "Use timer 9 (16-bit)"
+
+config MN10300_TTYSM1_TIMER3
+ bool "Use timer 3 (8-bit)"
+
+endchoice
+
+#
+# /dev/ttySM2
+#
+config MN10300_TTYSM2
+ bool "Enable SIF2 (/dev/ttySM2)"
+ depends on MN10300_TTYSM && MN10300_PROC_HAS_TTYSM2
+ help
+ Enable access to SIF2 through /dev/ttySM2 or gdb-stub
+
+choice
+ prompt "Select the timer to supply the clock for SIF2"
+ default MN10300_TTYSM0_TIMER10
+ depends on MN10300_TTYSM2
+
+config MN10300_TTYSM2_TIMER10
+ bool "Use timer 10 (16-bit)"
+
+endchoice
+
+config MN10300_TTYSM2_CTS
+ bool "Enable the use of the CTS line /dev/ttySM2"
+ depends on MN10300_TTYSM2
+
+endmenu
+
+source "mm/Kconfig"
+
+menu "Power management options"
+source kernel/power/Kconfig
+endmenu
+
+endmenu
+
+
+menu "Executable formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/mn10300/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
+
+source "arch/mn10300/oprofile/Kconfig"
--- /dev/null
+menu "Kernel hacking"
+
+source "lib/Kconfig.debug"
+
+config DEBUG_STACKOVERFLOW
+ bool "Check for stack overflows"
+ depends on DEBUG_KERNEL
+
+config DEBUG_DECOMPRESS_KERNEL
+ bool "Using serial port during decompressing kernel"
+ depends on DEBUG_KERNEL
+ default n
+ help
+ If you say Y here you will confirm the start and the end of
+ decompressing Linux seeing "Uncompressing Linux... " and
+ "Ok, booting the kernel.\n" on console.
+
+config KPROBES
+ bool "Kprobes"
+ depends on DEBUG_KERNEL
+ help
+ Kprobes allows you to trap at almost any kernel address and
+ execute a callback function. register_kprobe() establishes
+ a probepoint and specifies the callback. Kprobes is useful
+ for kernel debugging, non-intrusive instrumentation and testing.
+ If in doubt, say "N".
+
+config GDBSTUB
+ bool "Remote GDB kernel debugging"
+ depends on DEBUG_KERNEL
+ select DEBUG_INFO
+ select FRAME_POINTER
+ help
+ If you say Y here, it will be possible to remotely debug the kernel
+ using gdb. This enlarges your kernel ELF image disk size by several
+ megabytes and requires a machine with more than 16 MB, better 32 MB
+ RAM to avoid excessive linking time. This is only useful for kernel
+ hackers. If unsure, say N.
+
+config GDBSTUB_IMMEDIATE
+ bool "Break into GDB stub immediately"
+ depends on GDBSTUB
+ help
+ If you say Y here, GDB stub will break into the program as soon as
+ possible, leaving the program counter at the beginning of
+ start_kernel() in init/main.c.
+
+config GDB_CONSOLE
+ bool "Console output to GDB"
+ depends on GDBSTUB
+ help
+ If you are using GDB for remote debugging over a serial port and
+ would like kernel messages to be formatted into GDB $O packets so
+ that GDB prints them as program output, say 'Y'.
+
+config GDBSTUB_DEBUGGING
+ bool "Debug GDB stub by messages to serial port"
+ depends on GDBSTUB
+ help
+ This causes debugging messages to be displayed at various points
+ during execution of the GDB stub routines. Such messages will be
+ displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0
+ otherwise.
+
+config GDBSTUB_DEBUG_ENTRY
+ bool "Debug GDB stub entry"
+ depends on GDBSTUB_DEBUGGING
+ help
+ This option causes information to be displayed about entry to or exit
+ from the main GDB stub routine.
+
+config GDBSTUB_DEBUG_PROTOCOL
+ bool "Debug GDB stub protocol"
+ depends on GDBSTUB_DEBUGGING
+ help
+ This option causes information to be displayed about the GDB remote
+ protocol messages generated exchanged with GDB.
+
+config GDBSTUB_DEBUG_IO
+ bool "Debug GDB stub I/O"
+ depends on GDBSTUB_DEBUGGING
+ help
+ This option causes information to be displayed about GDB stub's
+ low-level I/O.
+
+config GDBSTUB_DEBUG_BREAKPOINT
+ bool "Debug GDB stub breakpoint management"
+ depends on GDBSTUB_DEBUGGING
+ help
+ This option causes information to be displayed about GDB stub's
+ breakpoint management.
+
+choice
+ prompt "GDB stub port"
+ default GDBSTUB_TTYSM0
+ depends on GDBSTUB
+ help
+ Select the serial port used for GDB-stub.
+
+config GDBSTUB_ON_TTYSM0
+ bool "/dev/ttySM0 [SIF0]"
+ depends on MN10300_TTYSM0
+ select GDBSTUB_ON_TTYSMx
+
+config GDBSTUB_ON_TTYSM1
+ bool "/dev/ttySM1 [SIF1]"
+ depends on MN10300_TTYSM1
+ select GDBSTUB_ON_TTYSMx
+
+config GDBSTUB_ON_TTYSM2
+ bool "/dev/ttySM2 [SIF2]"
+ depends on MN10300_TTYSM2
+ select GDBSTUB_ON_TTYSMx
+
+config GDBSTUB_ON_TTYS0
+ bool "/dev/ttyS0"
+ select GDBSTUB_ON_TTYSx
+
+config GDBSTUB_ON_TTYS1
+ bool "/dev/ttyS1"
+ select GDBSTUB_ON_TTYSx
+
+endchoice
+
+config GDBSTUB_ON_TTYSMx
+ bool
+ depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2
+ default y
+
+config GDBSTUB_ON_TTYSx
+ bool
+ depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1
+ default y
+
+endmenu
--- /dev/null
+###############################################################################
+#
+# MN10300 Kernel makefile system specifications
+#
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Modified by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+###############################################################################
+
+KBUILD_DEFCONFIG := asb2303_defconfig
+
+CCSPECS := $(shell $(CC) -v 2>&1 | grep "^Reading specs from " | head -1 | cut -c20-)
+CCDIR := $(strip $(patsubst %/specs,%,$(CCSPECS)))
+KBUILD_CPPFLAGS += -nostdinc -I$(CCDIR)/include
+
+LDFLAGS :=
+OBJCOPYFLAGS := -O binary -R .note -R .comment -S
+#LDFLAGS_vmlinux := -Map linkmap.txt
+CHECKFLAGS +=
+
+PROCESSOR := unset
+UNIT := unset
+
+KBUILD_CFLAGS += -mam33 -mmem-funcs -DCPU=AM33
+KBUILD_AFLAGS += -mam33 -DCPU=AM33
+
+ifeq ($(CONFIG_MN10300_CURRENT_IN_E2),y)
+KBUILD_CFLAGS += -ffixed-e2 -fcall-saved-e5
+endif
+
+ifeq ($(CONFIG_MN10300_PROC_MN103E010),y)
+PROCESSOR := mn103e010
+endif
+
+ifeq ($(CONFIG_MN10300_UNIT_ASB2303),y)
+UNIT := asb2303
+endif
+ifeq ($(CONFIG_MN10300_UNIT_ASB2305),y)
+UNIT := asb2305
+endif
+
+
+head-y := arch/mn10300/kernel/head.o arch/mn10300/kernel/init_task.o
+
+core-y += arch/mn10300/kernel/ arch/mn10300/mm/
+
+ifneq ($(PROCESSOR),unset)
+core-y += arch/mn10300/proc-$(PROCESSOR)/
+endif
+ifneq ($(UNIT),unset)
+core-y += arch/mn10300/unit-$(UNIT)/
+endif
+libs-y += arch/mn10300/lib/
+
+drivers-$(CONFIG_OPROFILE) += arch/mn10300/oprofile/
+
+boot := arch/mn10300/boot
+
+.PHONY: zImage
+
+KBUILD_IMAGE := $(boot)/zImage
+CLEAN_FILES += $(boot)/zImage
+CLEAN_FILES += $(boot)/compressed/vmlinux
+CLEAN_FILES += $(boot)/compressed/vmlinux.bin
+CLEAN_FILES += $(boot)/compressed/vmlinux.bin.gz
+
+zImage: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+all: zImage
+
+bootstrap:
+ $(Q)$(MAKEBOOT) bootstrap
+
+archclean:
+ $(Q)$(MAKE) $(clean)=arch/mn10300/proc-mn103e010
+ $(Q)$(MAKE) $(clean)=arch/mn10300/unit-asb2303
+ $(Q)$(MAKE) $(clean)=arch/mn10300/unit-asb2305
+
+define archhelp
+ echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
+endef
+
+# If you make sure the .S files get compiled with debug info,
+# uncomment the following to disable optimisations
+# that are unhelpful whilst debugging.
+ifdef CONFIG_DEBUG_INFO
+#KBUILD_CFLAGS += -O1
+KBUILD_AFLAGS += -Wa,--gdwarf2
+endif
+
+###################################################################################################
+#
+# juggle some symlinks in the MN10300 asm include dir
+#
+# Update machine proc and unit symlinks if something which affects
+# them changed. We use .proc / .unit to indicate when they were
+# updated last, otherwise make uses the target directory mtime.
+#
+###################################################################################################
+
+# processor specific definitions
+include/asm-mn10300/.proc: $(wildcard include/config/proc/*.h) include/config/auto.conf
+ @echo ' SYMLINK include/asm-mn10300/proc -> include/asm-mn10300/proc-$(PROCESSOR)'
+ifneq ($(KBUILD_SRC),)
+ $(Q)mkdir -p include/asm-mn10300
+ $(Q)ln -fsn $(srctree)/include/asm-mn10300/proc-$(PROCESSOR) include/asm-mn10300/proc
+else
+ $(Q)ln -fsn proc-$(PROCESSOR) include/asm-mn10300/proc
+endif
+ @touch $@
+
+CLEAN_FILES += include/asm-mn10300/proc include/asm-mn10300/.proc
+
+prepare: include/asm-mn10300/.proc
+
+# unit specific definitions
+include/asm-mn10300/.unit: $(wildcard include/config/unit/*.h) include/config/auto.conf
+ @echo ' SYMLINK include/asm-mn10300/unit -> include/asm-mn10300/unit-$(UNIT)'
+ifneq ($(KBUILD_SRC),)
+ $(Q)mkdir -p include/asm-mn10300
+ $(Q)ln -fsn $(srctree)/include/asm-mn10300/unit-$(UNIT) include/asm-mn10300/unit
+else
+ $(Q)ln -fsn unit-$(UNIT) include/asm-mn10300/unit
+endif
+ @touch $@
+
+CLEAN_FILES += include/asm-mn10300/unit include/asm-mn10300/.unit
+
+prepare: include/asm-mn10300/.unit
--- /dev/null
+# MN10300 kernel compressor and wrapper
+#
+# Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Written by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+
+targets := vmlinux.bin zImage
+
+subdir- := compressed
+
+# ---------------------------------------------------------------------------
+
+
+$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
+ $(call if_changed,objcopy)
+ @echo 'Kernel: $@ is ready'
+
+$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
+ $(call if_changed,objcopy)
+
+$(obj)/compressed/vmlinux: FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
--- /dev/null
+#
+# Create a compressed vmlinux image from the original vmlinux
+#
+
+targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
+
+LDFLAGS_vmlinux := -Ttext $(CONFIG_KERNEL_ZIMAGE_BASE_ADDRESS) -e startup_32
+
+$(obj)/vmlinux: $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE
+ $(call if_changed,ld)
+ @:
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+ $(call if_changed,objcopy)
+
+$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,gzip)
+
+LDFLAGS_piggy.o := -r --format binary --oformat elf32-am33lin -T
+
+$(obj)/piggy.o: $(obj)/vmlinux.lds $(obj)/vmlinux.bin.gz FORCE
+ $(call if_changed,ld)
--- /dev/null
+/* Boot entry point for a compressed MN10300 kernel
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+ .section .text
+
+#define DEBUG
+
+#include <linux/linkage.h>
+#include <asm/cpu-regs.h>
+
+ .globl startup_32
+startup_32:
+ # first save off parameters from bootloader
+ mov param_save_area,a0
+ mov d0,(a0)
+ mov d1,(4,a0)
+ mov d2,(8,a0)
+
+ mov sp,a3
+ mov decomp_stack+0x2000-4,a0
+ mov a0,sp
+
+ # invalidate and enable both of the caches
+ mov CHCTR,a0
+ clr d0
+ movhu d0,(a0) # turn off first
+ mov CHCTR_ICINV|CHCTR_DCINV,d0
+ movhu d0,(a0)
+ setlb
+ mov (a0),d0
+ btst CHCTR_ICBUSY|CHCTR_DCBUSY,d0 # wait till not busy
+ lne
+ mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD,d0 # writethru dcache
+ movhu d0,(a0) # enable
+
+ # clear the BSS area
+ mov __bss_start,a0
+ mov _end,a1
+ clr d0
+bssclear:
+ cmp a1,a0
+ bge bssclear_end
+ movbu d0,(a0)
+ inc a0
+ bra bssclear
+bssclear_end:
+
+ # decompress the kernel
+ call decompress_kernel[],0
+
+ # disable caches again
+ mov CHCTR,a0
+ clr d0
+ movhu d0,(a0)
+ setlb
+ mov (a0),d0
+ btst CHCTR_ICBUSY|CHCTR_DCBUSY,d0 # wait till not busy
+ lne
+
+ mov param_save_area,a0
+ mov (a0),d0
+ mov (4,a0),d1
+ mov (8,a0),d2
+
+ mov a3,sp
+ mov CONFIG_KERNEL_TEXT_ADDRESS,a0
+ jmp (a0)
+
+ .data
+ .align 4
+param_save_area:
+ .rept 3
+ .word 0
+ .endr
+
+ .section .bss
+ .align 4
+decomp_stack:
+ .space 0x2000
--- /dev/null
+/* MN10300 Miscellaneous helper routines for kernel decompressor
+ *
+ * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Modified by David Howells (dhowells@redhat.com)
+ * - Derived from arch/x86/boot/compressed/misc_32.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/compiler.h>
+#include <asm/serial-regs.h>
+#include "misc.h"
+
+#ifndef CONFIG_GDBSTUB_ON_TTYSx
+/* display 'Uncompressing Linux... ' messages on ttyS0 or ttyS1 */
+#if 1 /* ttyS0 */
+#define CYG_DEV_BASE 0xA6FB0000
+#else /* ttyS1 */
+#define CYG_DEV_BASE 0xA6FC0000
+#endif
+
+#define CYG_DEV_THR (*((volatile __u8*)(CYG_DEV_BASE + 0x00)))
+#define CYG_DEV_MCR (*((volatile __u8*)(CYG_DEV_BASE + 0x10)))
+#define SIO_MCR_DTR 0x01
+#define SIO_MCR_RTS 0x02
+#define CYG_DEV_LSR (*((volatile __u8*)(CYG_DEV_BASE + 0x14)))
+#define SIO_LSR_THRE 0x20 /* transmitter holding register empty */
+#define SIO_LSR_TEMT 0x40 /* transmitter register empty */
+#define CYG_DEV_MSR (*((volatile __u8*)(CYG_DEV_BASE + 0x18)))
+#define SIO_MSR_CTS 0x10 /* clear to send */
+#define SIO_MSR_DSR 0x20 /* data set ready */
+
+#define LSR_WAIT_FOR(STATE) \
+ do { while (!(CYG_DEV_LSR & SIO_LSR_##STATE)) {} } while (0)
+#define FLOWCTL_QUERY(LINE) \
+ ({ CYG_DEV_MSR & SIO_MSR_##LINE; })
+#define FLOWCTL_WAIT_FOR(LINE) \
+ do { while (!(CYG_DEV_MSR & SIO_MSR_##LINE)) {} } while (0)
+#define FLOWCTL_CLEAR(LINE) \
+ do { CYG_DEV_MCR &= ~SIO_MCR_##LINE; } while (0)
+#define FLOWCTL_SET(LINE) \
+ do { CYG_DEV_MCR |= SIO_MCR_##LINE; } while (0)
+#endif
+
+/*
+ * gzip declarations
+ */
+
+#define OF(args) args
+#define STATIC static
+
+#undef memset
+#undef memcpy
+
+static inline void *memset(const void *s, int c, size_t n)
+{
+ int i;
+ char *ss = (char *) s;
+
+ for (i = 0; i < n; i++)
+ ss[i] = c;
+ return (void *)s;
+}
+
+#define memzero(s, n) memset((s), 0, (n))
+
+static inline void *memcpy(void *__dest, const void *__src, size_t __n)
+{
+ int i;
+ const char *s = __src;
+ char *d = __dest;
+
+ for (i = 0; i < __n; i++)
+ d[i] = s[i];
+ return __dest;
+}
+
+typedef unsigned char uch;
+typedef unsigned short ush;
+typedef unsigned long ulg;
+
+#define WSIZE 0x8000 /* Window size must be at least 32k, and a power of
+ * two */
+
+static uch *inbuf; /* input buffer */
+static uch window[WSIZE]; /* sliding window buffer */
+
+static unsigned insize; /* valid bytes in inbuf */
+static unsigned inptr; /* index of next byte to be processed in inbuf */
+static unsigned outcnt; /* bytes in output buffer */
+
+/* gzip flag byte */
+#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
+#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
+#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
+#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
+#define COMMENT 0x10 /* bit 4 set: file comment present */
+#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
+#define RESERVED 0xC0 /* bit 6,7: reserved */
+
+/* Diagnostic functions */
+#ifdef DEBUG
+# define Assert(cond, msg) { if (!(cond)) error(msg); }
+# define Trace(x) fprintf x
+# define Tracev(x) { if (verbose) fprintf x ; }
+# define Tracevv(x) { if (verbose > 1) fprintf x ; }
+# define Tracec(c, x) { if (verbose && (c)) fprintf x ; }
+# define Tracecv(c, x) { if (verbose > 1 && (c)) fprintf x ; }
+#else
+# define Assert(cond, msg)
+# define Trace(x)
+# define Tracev(x)
+# define Tracevv(x)
+# define Tracec(c, x)
+# define Tracecv(c, x)
+#endif
+
+static int fill_inbuf(void);
+static void flush_window(void);
+static void error(const char *) __attribute__((noreturn));
+static void kputs(const char *);
+
+static inline unsigned char get_byte(void)
+{
+ unsigned char ch = inptr < insize ? inbuf[inptr++] : fill_inbuf();
+
+#if 0
+ char hex[3];
+ hex[0] = ((ch & 0x0f) > 9) ?
+ ((ch & 0x0f) + 'A' - 0xa) : ((ch & 0x0f) + '0');
+ hex[1] = ((ch >> 4) > 9) ?
+ ((ch >> 4) + 'A' - 0xa) : ((ch >> 4) + '0');
+ hex[2] = 0;
+ kputs(hex);
+#endif
+ return ch;
+}
+
+/*
+ * This is set up by the setup-routine at boot-time
+ */
+#define EXT_MEM_K (*(unsigned short *)0x90002)
+#ifndef STANDARD_MEMORY_BIOS_CALL
+#define ALT_MEM_K (*(unsigned long *) 0x901e0)
+#endif
+#define SCREEN_INFO (*(struct screen_info *)0x90000)
+
+static long bytes_out;
+static uch *output_data;
+static unsigned long output_ptr;
+
+
+static void *malloc(int size);
+
+static inline void free(void *where)
+{ /* Don't care */
+}
+
+static unsigned long free_mem_ptr = (unsigned long) &end;
+static unsigned long free_mem_end_ptr = (unsigned long) &end + 0x90000;
+
+static inline void gzip_mark(void **ptr)
+{
+ kputs(".");
+ *ptr = (void *) free_mem_ptr;
+}
+
+static inline void gzip_release(void **ptr)
+{
+ free_mem_ptr = (unsigned long) *ptr;
+}
+
+#define INPLACE_MOVE_ROUTINE 0x1000
+#define LOW_BUFFER_START 0x2000
+#define LOW_BUFFER_END 0x90000
+#define LOW_BUFFER_SIZE (LOW_BUFFER_END - LOW_BUFFER_START)
+#define HEAP_SIZE 0x3000
+static int high_loaded;
+static uch *high_buffer_start /* = (uch *)(((ulg)&end) + HEAP_SIZE)*/;
+
+static char *vidmem = (char *)0xb8000;
+static int lines, cols;
+
+#include "../../../../lib/inflate.c"
+
+static void *malloc(int size)
+{
+ void *p;
+
+ if (size < 0)
+ error("Malloc error\n");
+ if (!free_mem_ptr)
+ error("Memory error\n");
+
+ free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
+
+ p = (void *) free_mem_ptr;
+ free_mem_ptr += size;
+
+ if (free_mem_ptr >= free_mem_end_ptr)
+ error("\nOut of memory\n");
+
+ return p;
+}
+
+static inline void scroll(void)
+{
+ int i;
+
+ memcpy(vidmem, vidmem + cols * 2, (lines - 1) * cols * 2);
+ for (i = (lines - 1) * cols * 2; i < lines * cols * 2; i += 2)
+ vidmem[i] = ' ';
+}
+
+static inline void kputchar(unsigned char ch)
+{
+#ifdef CONFIG_MN10300_UNIT_ASB2305
+ while (SC0STR & SC01STR_TBF)
+ continue;
+
+ if (ch == 0x0a) {
+ SC0TXB = 0x0d;
+ while (SC0STR & SC01STR_TBF)
+ continue;
+ }
+
+ SC0TXB = ch;
+
+#else
+ while (SC1STR & SC01STR_TBF)
+ continue;
+
+ if (ch == 0x0a) {
+ SC1TXB = 0x0d;
+ while (SC1STR & SC01STR_TBF)
+ continue;
+ }
+
+ SC1TXB = ch;
+
+#endif
+}
+
+static void kputs(const char *s)
+{
+#ifdef CONFIG_DEBUG_DECOMPRESS_KERNEL
+#ifndef CONFIG_GDBSTUB_ON_TTYSx
+ char ch;
+
+ FLOWCTL_SET(DTR);
+
+ while (*s) {
+ LSR_WAIT_FOR(THRE);
+
+ ch = *s++;
+ if (ch == 0x0a) {
+ CYG_DEV_THR = 0x0d;
+ LSR_WAIT_FOR(THRE);
+ }
+ CYG_DEV_THR = ch;
+ }
+
+ FLOWCTL_CLEAR(DTR);
+#else
+
+ for (; *s; s++)
+ kputchar(*s);
+
+#endif
+#endif /* CONFIG_DEBUG_DECOMPRESS_KERNEL */
+}
+
+/* ===========================================================================
+ * Fill the input buffer. This is called only when the buffer is empty
+ * and at least one byte is really needed.
+ */
+static int fill_inbuf()
+{
+ if (insize != 0)
+ error("ran out of input data\n");
+
+ inbuf = input_data;
+ insize = input_len;
+ inptr = 1;
+ return inbuf[0];
+}
+
+/* ===========================================================================
+ * Write the output window window[0..outcnt-1] and update crc and bytes_out.
+ * (Used for the decompressed data only.)
+ */
+static void flush_window_low(void)
+{
+ ulg c = crc; /* temporary variable */
+ unsigned n;
+ uch *in, *out, ch;
+
+ in = window;
+ out = &output_data[output_ptr];
+ for (n = 0; n < outcnt; n++) {
+ ch = *out++ = *in++;
+ c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
+ }
+ crc = c;
+ bytes_out += (ulg)outcnt;
+ output_ptr += (ulg)outcnt;
+ outcnt = 0;
+}
+
+static void flush_window_high(void)
+{
+ ulg c = crc; /* temporary variable */
+ unsigned n;
+ uch *in, ch;
+ in = window;
+ for (n = 0; n < outcnt; n++) {
+ ch = *output_data++ = *in++;
+ if ((ulg) output_data == LOW_BUFFER_END)
+ output_data = high_buffer_start;
+ c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
+ }
+ crc = c;
+ bytes_out += (ulg)outcnt;
+ outcnt = 0;
+}
+
+static void flush_window(void)
+{
+ if (high_loaded)
+ flush_window_high();
+ else
+ flush_window_low();
+}
+
+static void error(const char *x)
+{
+ kputs("\n\n");
+ kputs(x);
+ kputs("\n\n -- System halted");
+
+ while (1)
+ /* Halt */;
+}
+
+#define STACK_SIZE (4096)
+
+long user_stack[STACK_SIZE];
+
+struct {
+ long *a;
+ short b;
+} stack_start = { &user_stack[STACK_SIZE], 0 };
+
+void setup_normal_output_buffer(void)
+{
+#ifdef STANDARD_MEMORY_BIOS_CALL
+ if (EXT_MEM_K < 1024)
+ error("Less than 2MB of memory.\n");
+#else
+ if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < 1024)
+ error("Less than 2MB of memory.\n");
+#endif
+ output_data = (char *) 0x100000; /* Points to 1M */
+}
+
+struct moveparams {
+ uch *low_buffer_start;
+ int lcount;
+ uch *high_buffer_start;
+ int hcount;
+};
+
+void setup_output_buffer_if_we_run_high(struct moveparams *mv)
+{
+ high_buffer_start = (uch *)(((ulg) &end) + HEAP_SIZE);
+#ifdef STANDARD_MEMORY_BIOS_CALL
+ if (EXT_MEM_K < (3 * 1024))
+ error("Less than 4MB of memory.\n");
+#else
+ if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < (3 * 1024))
+ error("Less than 4MB of memory.\n");
+#endif
+ mv->low_buffer_start = output_data = (char *) LOW_BUFFER_START;
+ high_loaded = 1;
+ free_mem_end_ptr = (long) high_buffer_start;
+ if (0x100000 + LOW_BUFFER_SIZE > (ulg) high_buffer_start) {
+ high_buffer_start = (uch *)(0x100000 + LOW_BUFFER_SIZE);
+ mv->hcount = 0; /* say: we need not to move high_buffer */
+ } else {
+ mv->hcount = -1;
+ }
+ mv->high_buffer_start = high_buffer_start;
+}
+
+void close_output_buffer_if_we_run_high(struct moveparams *mv)
+{
+ mv->lcount = bytes_out;
+ if (bytes_out > LOW_BUFFER_SIZE) {
+ mv->lcount = LOW_BUFFER_SIZE;
+ if (mv->hcount)
+ mv->hcount = bytes_out - LOW_BUFFER_SIZE;
+ } else {
+ mv->hcount = 0;
+ }
+}
+
+#undef DEBUGFLAG
+#ifdef DEBUGFLAG
+int debugflag;
+#endif
+
+int decompress_kernel(struct moveparams *mv)
+{
+#ifdef DEBUGFLAG
+ while (!debugflag)
+ barrier();
+#endif
+
+ output_data = (char *) CONFIG_KERNEL_TEXT_ADDRESS;
+
+ makecrc();
+ kputs("Uncompressing Linux... ");
+ gunzip();
+ kputs("Ok, booting the kernel.\n");
+ return 0;
+}
--- /dev/null
+/* Internal definitions for the MN10300 kernel decompressor
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+extern int end;
+
+/*
+ * vmlinux.lds
+ */
+extern char input_data[];
+extern int input_len;
--- /dev/null
+SECTIONS
+{
+ .data : {
+ input_len = .;
+ LONG(input_data_end - input_data) input_data = .;
+ *(.data)
+ input_data_end = .;
+ }
+}
--- /dev/null
+#!/bin/sh
+#
+# arch/mn10300/boot/install -c.sh
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# Licence. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1995 by Linus Torvalds
+#
+# Adapted from code in arch/i386/boot/Makefile by H. Peter Anvin
+#
+# "make install -c" script for i386 architecture
+#
+# Arguments:
+# $1 - kernel version
+# $2 - kernel image file
+# $3 - kernel map file
+# $4 - default install -c path (blank if root directory)
+# $5 - boot rom file
+#
+
+# User may have a custom install -c script
+
+rm -fr $4/../usr/include/linux $4/../usr/include/asm
+install -c -m 0755 $2 $4/vmlinuz
+install -c -m 0755 $5 $4/boot.rom
+install -c -m 0755 -d $4/../usr/include/linux
+cd $TOPDIR/include/linux
+for i in `find . -maxdepth 1 -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/linux
+done
+install -c -m 0755 -d $4/../usr/include/linux/byteorder
+cd $TOPDIR/include/linux/byteorder
+for i in `find . -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/linux/byteorder
+done
+install -c -m 0755 -d $4/../usr/include/linux/lockd
+cd $TOPDIR/include/linux/lockd
+for i in `find . -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/linux/lockd
+done
+install -c -m 0755 -d $4/../usr/include/linux/netfilter_ipv4
+cd $TOPDIR/include/linux/netfilter_ipv4
+for i in `find . -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/linux/netfilter_ipv4
+done
+install -c -m 0755 -d $4/../usr/include/linux/nfsd
+cd $TOPDIR/include/linux/nfsd
+for i in `find . -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/linux/nfsd/$i
+done
+install -c -m 0755 -d $4/../usr/include/linux/raid
+cd $TOPDIR/include/linux/raid
+for i in `find . -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/linux/raid
+done
+install -c -m 0755 -d $4/../usr/include/linux/sunrpc
+cd $TOPDIR/include/linux/sunrpc
+for i in `find . -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/linux/sunrpc
+done
+install -c -m 0755 -d $4/../usr/include/asm
+cd $TOPDIR/include/asm
+for i in `find . -name '*.h' -print`; do
+ install -c -m 0644 $i $4/../usr/include/asm
+done
--- /dev/null
+/*
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ * Copyright (C) 1997 Martin Mares
+ */
+
+/*
+ * This file builds a disk-image from three different files:
+ *
+ * - bootsect: exactly 512 bytes of 8086 machine code, loads the rest
+ * - setup: 8086 machine code, sets up system parm
+ * - system: 80386 code for actual system
+ *
+ * It does some checking that all files are of the correct type, and
+ * just writes the result to stdout, removing headers and padding to
+ * the right amount. It also writes some system data to stderr.
+ */
+
+/*
+ * Changes by tytso to allow root device specification
+ * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
+ * Cross compiling fixes by Gertjan van Wingerde, July 1996
+ * Rewritten by Martin Mares, April 1997
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <asm/boot.h>
+
+#define DEFAULT_MAJOR_ROOT 0
+#define DEFAULT_MINOR_ROOT 0
+
+/* Minimal number of setup sectors (see also bootsect.S) */
+#define SETUP_SECTS 4
+
+uint8_t buf[1024];
+int fd;
+int is_big_kernel;
+
+__attribute__((noreturn))
+void die(const char *str, ...)
+{
+ va_list args;
+ va_start(args, str);
+ vfprintf(stderr, str, args);
+ fputc('\n', stderr);
+ exit(1);
+}
+
+void file_open(const char *name)
+{
+ fd = open(name, O_RDONLY, 0);
+ if (fd < 0)
+ die("Unable to open `%s': %m", name);
+}
+
+__attribute__((noreturn))
+void usage(void)
+{
+ die("Usage: build [-b] bootsect setup system [rootdev] [> image]");
+}
+
+int main(int argc, char **argv)
+{
+ unsigned int i, c, sz, setup_sectors;
+ uint32_t sys_size;
+ uint8_t major_root, minor_root;
+ struct stat sb;
+
+ if (argc > 2 && !strcmp(argv[1], "-b")) {
+ is_big_kernel = 1;
+ argc--, argv++;
+ }
+ if ((argc < 4) || (argc > 5))
+ usage();
+ if (argc > 4) {
+ if (!strcmp(argv[4], "CURRENT")) {
+ if (stat("/", &sb)) {
+ perror("/");
+ die("Couldn't stat /");
+ }
+ major_root = major(sb.st_dev);
+ minor_root = minor(sb.st_dev);
+ } else if (strcmp(argv[4], "FLOPPY")) {
+ if (stat(argv[4], &sb)) {
+ perror(argv[4]);
+ die("Couldn't stat root device.");
+ }
+ major_root = major(sb.st_rdev);
+ minor_root = minor(sb.st_rdev);
+ } else {
+ major_root = 0;
+ minor_root = 0;
+ }
+ } else {
+ major_root = DEFAULT_MAJOR_ROOT;
+ minor_root = DEFAULT_MINOR_ROOT;
+ }
+ fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
+
+ file_open(argv[1]);
+ i = read(fd, buf, sizeof(buf));
+ fprintf(stderr, "Boot sector %d bytes.\n", i);
+ if (i != 512)
+ die("Boot block must be exactly 512 bytes");
+ if (buf[510] != 0x55 || buf[511] != 0xaa)
+ die("Boot block hasn't got boot flag (0xAA55)");
+ buf[508] = minor_root;
+ buf[509] = major_root;
+ if (write(1, buf, 512) != 512)
+ die("Write call failed");
+ close(fd);
+
+ /* Copy the setup code */
+ file_open(argv[2]);
+ for (i = 0; (c = read(fd, buf, sizeof(buf))) > 0; i += c)
+ if (write(1, buf, c) != c)
+ die("Write call failed");
+ if (c != 0)
+ die("read-error on `setup'");
+ close(fd);
+
+ /* Pad unused space with zeros */
+ setup_sectors = (i + 511) / 512;
+ /* for compatibility with ancient versions of LILO. */
+ if (setup_sectors < SETUP_SECTS)
+ setup_sectors = SETUP_SECTS;
+ fprintf(stderr, "Setup is %d bytes.\n", i);
+ memset(buf, 0, sizeof(buf));
+ while (i < setup_sectors * 512) {
+ c = setup_sectors * 512 - i;
+ if (c > sizeof(buf))
+ c = sizeof(buf);
+ if (write(1, buf, c) != c)
+ die("Write call failed");
+ i += c;
+ }
+
+ file_open(argv[3]);
+ if (fstat(fd, &sb))
+ die("Unable to stat `%s': %m", argv[3]);
+ sz = sb.st_size;
+ fprintf(stderr, "System is %d kB\n", sz / 1024);
+ sys_size = (sz + 15) / 16;
+ /* 0x28000*16 = 2.5 MB, conservative estimate for the current maximum */
+ if (sys_size > (is_big_kernel ? 0x28000 : DEF_SYSSIZE))
+ die("System is too big. Try using %smodules.",
+ is_big_kernel ? "" : "bzImage or ");
+ if (sys_size > 0xffff)
+ fprintf(stderr,
+ "warning: kernel is too big for standalone boot "
+ "from floppy\n");
+ while (sz > 0) {
+ int l, n;
+
+ l = (sz > sizeof(buf)) ? sizeof(buf) : sz;
+ n = read(fd, buf, l);
+ if (n != l) {
+ if (n < 0)
+ die("Error reading %s: %m", argv[3]);
+ else
+ die("%s: Unexpected EOF", argv[3]);
+ }
+ if (write(1, buf, l) != l)
+ die("Write failed");
+ sz -= l;
+ }
+ close(fd);
+
+ /* Write sizes to the bootsector */
+ if (lseek(1, 497, SEEK_SET) != 497)
+ die("Output: seek failed");
+ buf[0] = setup_sectors;
+ if (write(1, buf, 1) != 1)
+ die("Write of setup sector count failed");
+ if (lseek(1, 500, SEEK_SET) != 500)
+ die("Output: seek failed");
+ buf[0] = (sys_size & 0xff);
+ buf[1] = ((sys_size >> 8) & 0xff);
+ if (write(1, buf, 2) != 2)
+ die("Write of image length failed");
+
+ return 0;
+}
--- /dev/null
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.24-rc2
+# Fri Nov 16 13:36:38 2007
+#
+CONFIG_MN10300=y
+CONFIG_AM33=y
+CONFIG_MMU=y
+# CONFIG_HIGHMEM is not set
+# CONFIG_NUMA is not set
+CONFIG_UID16=y
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_BUG=y
+CONFIG_QUICKLIST=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+# CONFIG_ARCH_SUPPORTS_AOUT is not set
+CONFIG_GENERIC_HARDIRQS=y
+# CONFIG_HOTPLUG_CPU is not set
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_LOCK_KERNEL=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+# CONFIG_POSIX_MQUEUE is not set
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_USER_NS is not set
+# CONFIG_PID_NS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_CGROUPS is not set
+# CONFIG_FAIR_GROUP_SCHED is not set
+# CONFIG_SYSFS_DEPRECATED is not set
+# CONFIG_RELAY is not set
+# CONFIG_BLK_DEV_INITRD is not set
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+# CONFIG_KALLSYMS is not set
+# CONFIG_HOTPLUG is not set
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_SLOB is not set
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+# CONFIG_MODULES is not set
+# CONFIG_BLOCK is not set
+
+#
+# Matsushita MN10300 system setup
+#
+CONFIG_MN10300_UNIT_ASB2303=y
+# CONFIG_MN10300_UNIT_ASB2305 is not set
+CONFIG_MN10300_PROC_MN103E010=y
+CONFIG_MN10300_CPU_AM33V2=y
+CONFIG_FPU=y
+CONFIG_MN10300_CACHE_WBACK=y
+# CONFIG_MN10300_CACHE_WTHRU is not set
+# CONFIG_MN10300_CACHE_DISABLED is not set
+
+#
+# Memory layout options
+#
+CONFIG_KERNEL_RAM_BASE_ADDRESS=0x90000000
+CONFIG_INTERRUPT_VECTOR_BASE=0x90000000
+CONFIG_KERNEL_TEXT_ADDRESS=0x90001000
+CONFIG_KERNEL_ZIMAGE_BASE_ADDRESS=0x90700000
+CONFIG_PREEMPT=y
+CONFIG_PREEMPT_BKL=y
+CONFIG_MN10300_CURRENT_IN_E2=y
+CONFIG_MN10300_USING_JTAG=y
+CONFIG_MN10300_RTC=y
+CONFIG_MN10300_WD_TIMER=y
+# CONFIG_ARCH_SUPPORTS_MSI is not set
+
+#
+# MN10300 internal serial options
+#
+CONFIG_MN10300_PROC_HAS_TTYSM0=y
+CONFIG_MN10300_PROC_HAS_TTYSM1=y
+CONFIG_MN10300_PROC_HAS_TTYSM2=y
+CONFIG_MN10300_TTYSM=y
+CONFIG_MN10300_TTYSM_CONSOLE=y
+CONFIG_MN10300_TTYSM0=y
+CONFIG_MN10300_TTYSM0_TIMER8=y
+# CONFIG_MN10300_TTYSM0_TIMER2 is not set
+CONFIG_MN10300_TTYSM1=y
+CONFIG_MN10300_TTYSM1_TIMER9=y
+# CONFIG_MN10300_TTYSM1_TIMER3 is not set
+# CONFIG_MN10300_TTYSM2 is not set
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_RESOURCES_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=0
+CONFIG_NR_QUICK=1
+CONFIG_VIRT_TO_BUS=y
+
+#
+# Power management options
+#
+# CONFIG_PM is not set
+
+#
+# Executable formats
+#
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+CONFIG_PACKET_MMAP=y
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+# CONFIG_IP_PNP_DHCP is not set
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_IP_MROUTE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+# CONFIG_INET_DIAG is not set
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_INET6_XFRM_TUNNEL is not set
+# CONFIG_INET6_TUNNEL is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_CONNECTOR is not set
+CONFIG_MTD=y
+CONFIG_MTD_DEBUG=y
+CONFIG_MTD_DEBUG_VERBOSE=0
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+CONFIG_MTD_REDBOOT_PARTS=y
+CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1
+CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED=y
+# CONFIG_MTD_REDBOOT_PARTS_READONLY is not set
+# CONFIG_MTD_CMDLINE_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+CONFIG_MTD_CFI_ADV_OPTIONS=y
+CONFIG_MTD_CFI_NOSWAP=y
+# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
+# CONFIG_MTD_CFI_LE_BYTE_SWAP is not set
+CONFIG_MTD_CFI_GEOMETRY=y
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+CONFIG_MTD_CFI_I4=y
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_OTP is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+# CONFIG_PARPORT is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_EEPROM_93CX6 is not set
+
+#
+# SCSI device support
+#
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NETDEVICES_MULTIQUEUE is not set
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+CONFIG_MII=y
+CONFIG_SMC91X=y
+# CONFIG_IBM_NEW_EMAC_ZMII is not set
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_B44 is not set
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+# CONFIG_WAN is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+CONFIG_RTC=y
+# CONFIG_R3964 is not set
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+
+#
+# SPI support
+#
+# CONFIG_SPI is not set
+# CONFIG_SPI_MASTER is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_SM501 is not set
+
+#
+# Multimedia devices
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_RTC_CLASS is not set
+
+#
+# Userspace I/O
+#
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+CONFIG_DNOTIFY=y
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_FS_DEBUG=0
+CONFIG_JFFS2_FS_WRITEBUFFER=y
+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
+# CONFIG_JFFS2_SUMMARY is not set
+# CONFIG_JFFS2_FS_XATTR is not set
+# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
+CONFIG_JFFS2_ZLIB=y
+# CONFIG_JFFS2_LZO is not set
+CONFIG_JFFS2_RTIME=y
+# CONFIG_JFFS2_RUBIN is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFS_DIRECTIO is not set
+# CONFIG_NFSD is not set
+CONFIG_ROOT_NFS=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_SUNRPC_BIND34 is not set
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+# CONFIG_DEBUG_KERNEL is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
+# CONFIG_SAMPLES is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+# CONFIG_CRYPTO is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+
+#
+# Profiling support
+#
+CONFIG_PROFILING=y
+CONFIG_OPROFILE=y
--- /dev/null
+#
+# Makefile for the MN10300-specific core kernel code
+#
+extra-y := head.o init_task.o vmlinux.lds
+
+obj-y := process.o semaphore.o signal.o entry.o fpu.o traps.o irq.o \
+ ptrace.o setup.o time.o sys_mn10300.o io.o kthread.o \
+ switch_to.o mn10300_ksyms.o kernel_execve.o
+
+obj-$(CONFIG_MN10300_WD_TIMER) += mn10300-watchdog.o mn10300-watchdog-low.o
+
+obj-$(CONFIG_FPU) += fpu-low.o
+
+obj-$(CONFIG_MN10300_TTYSM) += mn10300-serial.o mn10300-serial-low.o \
+ mn10300-debug.o
+obj-$(CONFIG_GDBSTUB) += gdb-stub.o gdb-low.o
+obj-$(CONFIG_GDBSTUB_ON_TTYSx) += gdb-io-serial.o gdb-io-serial-low.o
+obj-$(CONFIG_GDBSTUB_ON_TTYSMx) += gdb-io-ttysm.o gdb-io-ttysm-low.o
+
+ifneq ($(CONFIG_MN10300_CACHE_DISABLED),y)
+obj-$(CONFIG_GDBSTUB) += gdb-cache.o
+endif
+
+obj-$(CONFIG_MN10300_RTC) += rtc.o
+obj-$(CONFIG_PROFILE) += profile.o profile-low.o
+obj-$(CONFIG_MODULES) += module.o
+obj-$(CONFIG_KPROBES) += kprobes.o
--- /dev/null
+/*
+ * Generate definitions needed by assembly language modules.
+ * This code generates raw asm output which is post-processed
+ * to extract and format the required data.
+ */
+
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/personality.h>
+#include <asm/ucontext.h>
+#include <asm/processor.h>
+#include <asm/thread_info.h>
+#include <asm/ptrace.h>
+#include "sigframe.h"
+#include "mn10300-serial.h"
+
+#define DEFINE(sym, val) \
+ asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->")
+
+#define OFFSET(sym, str, mem) \
+ DEFINE(sym, offsetof(struct str, mem));
+
+void foo(void)
+{
+ OFFSET(SIGCONTEXT_d0, sigcontext, d0);
+ OFFSET(SIGCONTEXT_d1, sigcontext, d1);
+ BLANK();
+
+ OFFSET(TI_task, thread_info, task);
+ OFFSET(TI_exec_domain, thread_info, exec_domain);
+ OFFSET(TI_flags, thread_info, flags);
+ OFFSET(TI_cpu, thread_info, cpu);
+ OFFSET(TI_preempt_count, thread_info, preempt_count);
+ OFFSET(TI_addr_limit, thread_info, addr_limit);
+ OFFSET(TI_restart_block, thread_info, restart_block);
+ BLANK();
+
+ OFFSET(REG_D0, pt_regs, d0);
+ OFFSET(REG_D1, pt_regs, d1);
+ OFFSET(REG_D2, pt_regs, d2);
+ OFFSET(REG_D3, pt_regs, d3);
+ OFFSET(REG_A0, pt_regs, a0);
+ OFFSET(REG_A1, pt_regs, a1);
+ OFFSET(REG_A2, pt_regs, a2);
+ OFFSET(REG_A3, pt_regs, a3);
+ OFFSET(REG_E0, pt_regs, e0);
+ OFFSET(REG_E1, pt_regs, e1);
+ OFFSET(REG_E2, pt_regs, e2);
+ OFFSET(REG_E3, pt_regs, e3);
+ OFFSET(REG_E4, pt_regs, e4);
+ OFFSET(REG_E5, pt_regs, e5);
+ OFFSET(REG_E6, pt_regs, e6);
+ OFFSET(REG_E7, pt_regs, e7);
+ OFFSET(REG_SP, pt_regs, sp);
+ OFFSET(REG_EPSW, pt_regs, epsw);
+ OFFSET(REG_PC, pt_regs, pc);
+ OFFSET(REG_LAR, pt_regs, lar);
+ OFFSET(REG_LIR, pt_regs, lir);
+ OFFSET(REG_MDR, pt_regs, mdr);
+ OFFSET(REG_MCVF, pt_regs, mcvf);
+ OFFSET(REG_MCRL, pt_regs, mcrl);
+ OFFSET(REG_MCRH, pt_regs, mcrh);
+ OFFSET(REG_MDRQ, pt_regs, mdrq);
+ OFFSET(REG_ORIG_D0, pt_regs, orig_d0);
+ OFFSET(REG_NEXT, pt_regs, next);
+ DEFINE(REG__END, sizeof(struct pt_regs));
+ BLANK();
+
+ OFFSET(THREAD_UREGS, thread_struct, uregs);
+ OFFSET(THREAD_PC, thread_struct, pc);
+ OFFSET(THREAD_SP, thread_struct, sp);
+ OFFSET(THREAD_A3, thread_struct, a3);
+ OFFSET(THREAD_USP, thread_struct, usp);
+ OFFSET(THREAD_FRAME, thread_struct, __frame);
+ BLANK();
+
+ DEFINE(CLONE_VM_asm, CLONE_VM);
+ DEFINE(CLONE_FS_asm, CLONE_FS);
+ DEFINE(CLONE_FILES_asm, CLONE_FILES);
+ DEFINE(CLONE_SIGHAND_asm, CLONE_SIGHAND);
+ DEFINE(CLONE_UNTRACED_asm, CLONE_UNTRACED);
+ DEFINE(SIGCHLD_asm, SIGCHLD);
+ BLANK();
+
+ OFFSET(EXEC_DOMAIN_handler, exec_domain, handler);
+ OFFSET(RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext);
+
+ DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
+
+ OFFSET(__rx_buffer, mn10300_serial_port, rx_buffer);
+ OFFSET(__rx_inp, mn10300_serial_port, rx_inp);
+ OFFSET(__rx_outp, mn10300_serial_port, rx_outp);
+ OFFSET(__tx_info_buffer, mn10300_serial_port, uart.info);
+ OFFSET(__tx_xchar, mn10300_serial_port, tx_xchar);
+ OFFSET(__tx_break, mn10300_serial_port, tx_break);
+ OFFSET(__intr_flags, mn10300_serial_port, intr_flags);
+ OFFSET(__rx_icr, mn10300_serial_port, rx_icr);
+ OFFSET(__tx_icr, mn10300_serial_port, tx_icr);
+ OFFSET(__tm_icr, mn10300_serial_port, _tmicr);
+ OFFSET(__iobase, mn10300_serial_port, _iobase);
+
+ DEFINE(__UART_XMIT_SIZE, UART_XMIT_SIZE);
+ OFFSET(__xmit_buffer, uart_info, xmit.buf);
+ OFFSET(__xmit_head, uart_info, xmit.head);
+ OFFSET(__xmit_tail, uart_info, xmit.tail);
+}
--- /dev/null
+###############################################################################
+#
+# MN10300 Exception and interrupt entry points
+#
+# Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Modified by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+###############################################################################
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/smp.h>
+#include <asm/system.h>
+#include <asm/thread_info.h>
+#include <asm/intctl-regs.h>
+#include <asm/busctl-regs.h>
+#include <asm/timer-regs.h>
+#include <asm/unit/leds.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/errno.h>
+#include <asm/asm-offsets.h>
+#include <asm/frame.inc>
+
+#ifdef CONFIG_PREEMPT
+#define preempt_stop __cli
+#else
+#define preempt_stop
+#define resume_kernel restore_all
+#endif
+
+ .macro __cli
+ and ~EPSW_IM,epsw
+ or EPSW_IE|MN10300_CLI_LEVEL,epsw
+ nop
+ nop
+ nop
+ .endm
+ .macro __sti
+ or EPSW_IE|EPSW_IM_7,epsw
+ .endm
+
+
+ .am33_2
+
+###############################################################################
+#
+# the return path for a forked child
+# - on entry, D0 holds the address of the previous task to run
+#
+###############################################################################
+ENTRY(ret_from_fork)
+ call schedule_tail[],0
+ GET_THREAD_INFO a2
+
+ # return 0 to indicate child process
+ clr d0
+ mov d0,(REG_D0,fp)
+ jmp syscall_exit
+
+###############################################################################
+#
+# system call handler
+#
+###############################################################################
+ENTRY(system_call)
+ add -4,sp
+ SAVE_ALL
+ mov d0,(REG_ORIG_D0,fp)
+ GET_THREAD_INFO a2
+ cmp nr_syscalls,d0
+ bcc syscall_badsys
+ btst _TIF_SYSCALL_TRACE,(TI_flags,a2)
+ bne syscall_trace_entry
+syscall_call:
+ add d0,d0,a1
+ add a1,a1
+ mov (REG_A0,fp),d0
+ mov (sys_call_table,a1),a0
+ calls (a0)
+ mov d0,(REG_D0,fp)
+syscall_exit:
+ # make sure we don't miss an interrupt setting need_resched or
+ # sigpending between sampling and the rti
+ __cli
+ mov (TI_flags,a2),d2
+ btst _TIF_ALLWORK_MASK,d2
+ bne syscall_exit_work
+restore_all:
+ RESTORE_ALL
+
+###############################################################################
+#
+# perform work that needs to be done immediately before resumption and syscall
+# tracing
+#
+###############################################################################
+ ALIGN
+syscall_exit_work:
+ btst _TIF_SYSCALL_TRACE,d2
+ beq work_pending
+ __sti # could let do_syscall_trace() call
+ # schedule() instead
+ mov fp,d0
+ mov 1,d1
+ call do_syscall_trace[],0 # do_syscall_trace(regs,entryexit)
+ jmp resume_userspace
+
+ ALIGN
+work_pending:
+ btst _TIF_NEED_RESCHED,d2
+ beq work_notifysig
+
+work_resched:
+ call schedule[],0
+
+ # make sure we don't miss an interrupt setting need_resched or
+ # sigpending between sampling and the rti
+ __cli
+
+ # is there any work to be done other than syscall tracing?
+ mov (TI_flags,a2),d2
+ btst _TIF_WORK_MASK,d2
+ beq restore_all
+ btst _TIF_NEED_RESCHED,d2
+ bne work_resched
+
+ # deal with pending signals and notify-resume requests
+work_notifysig:
+ mov fp,d0
+ mov d2,d1
+ call do_notify_resume[],0
+ jmp resume_userspace
+
+ # perform syscall entry tracing
+syscall_trace_entry:
+ mov -ENOSYS,d0
+ mov d0,(REG_D0,fp)
+ mov fp,d0
+ clr d1
+ call do_syscall_trace[],0
+ mov (REG_ORIG_D0,fp),d0
+ mov (REG_D1,fp),d1
+ cmp nr_syscalls,d0
+ bcs syscall_call
+ jmp syscall_exit
+
+syscall_badsys:
+ mov -ENOSYS,d0
+ mov d0,(REG_D0,fp)
+ jmp resume_userspace
+
+ # userspace resumption stub bypassing syscall exit tracing
+ .globl ret_from_exception, ret_from_intr
+ ALIGN
+ret_from_exception:
+ preempt_stop
+ret_from_intr:
+ GET_THREAD_INFO a2
+ mov (REG_EPSW,fp),d0 # need to deliver signals before
+ # returning to userspace
+ and EPSW_nSL,d0
+ beq resume_kernel # returning to supervisor mode
+
+ENTRY(resume_userspace)
+ # make sure we don't miss an interrupt setting need_resched or
+ # sigpending between sampling and the rti
+ __cli
+
+ # is there any work to be done on int/exception return?
+ mov (TI_flags,a2),d2
+ btst _TIF_WORK_MASK,d2
+ bne work_pending
+ jmp restore_all
+
+#ifdef CONFIG_PREEMPT
+ENTRY(resume_kernel)
+ mov (TI_preempt_count,a2),d0 # non-zero preempt_count ?
+ cmp 0,d0
+ bne restore_all
+
+need_resched:
+ btst _TIF_NEED_RESCHED,(TI_flags,a2)
+ beq restore_all
+ mov (REG_EPSW,fp),d0
+ and EPSW_IM,d0
+ cmp EPSW_IM_7,d0 # interrupts off (exception path) ?
+ beq restore_all
+ call preempt_schedule_irq[],0
+ jmp need_resched
+#endif
+
+
+###############################################################################
+#
+# IRQ handler entry point
+# - intended to be entered at multiple priorities
+#
+###############################################################################
+ENTRY(irq_handler)
+ add -4,sp
+ SAVE_ALL
+
+ # it's not a syscall
+ mov 0xffffffff,d0
+ mov d0,(REG_ORIG_D0,fp)
+
+ mov fp,d0
+ call do_IRQ[],0 # do_IRQ(regs)
+
+ jmp ret_from_intr
+
+###############################################################################
+#
+# Monitor Signal handler entry point
+#
+###############################################################################
+ENTRY(monitor_signal)
+ movbu (0xae000001),d1
+ cmp 1,d1
+ beq monsignal
+ ret [],0
+
+monsignal:
+ or EPSW_NMID,epsw
+ mov d0,a0
+ mov a0,sp
+ mov (REG_EPSW,fp),d1
+ and ~EPSW_nSL,d1
+ mov d1,(REG_EPSW,fp)
+ movm (sp),[d2,d3,a2,a3,exreg0,exreg1,exother]
+ mov (sp),a1
+ mov a1,usp
+ movm (sp),[other]
+ add 4,sp
+here: jmp 0x8e000008-here+0x8e000008
+
+###############################################################################
+#
+# Double Fault handler entry point
+# - note that there will not be a stack, D0/A0 will hold EPSW/PC as were
+#
+###############################################################################
+ .section .bss
+ .balign THREAD_SIZE
+ .space THREAD_SIZE
+__df_stack:
+ .previous
+
+ENTRY(double_fault)
+ mov a0,(__df_stack-4) # PC as was
+ mov d0,(__df_stack-8) # EPSW as was
+ mn10300_set_dbfleds # display 'db-f' on the LEDs
+ mov 0xaa55aa55,d0
+ mov d0,(__df_stack-12) # no ORIG_D0
+ mov sp,a0 # save corrupted SP
+ mov __df_stack-12,sp # emergency supervisor stack
+ SAVE_ALL
+ mov a0,(REG_A0,fp) # save corrupted SP as A0 (which got
+ # clobbered by the CPU)
+ mov fp,d0
+ calls do_double_fault
+double_fault_loop:
+ bra double_fault_loop
+
+###############################################################################
+#
+# Bus Error handler entry point
+# - handle external (async) bus errors separately
+#
+###############################################################################
+ENTRY(raw_bus_error)
+ add -4,sp
+ mov d0,(sp)
+ mov (BCBERR),d0 # what
+ btst BCBERR_BEMR_DMA,d0 # see if it was an external bus error
+ beq __common_exception_aux # it wasn't
+
+ SAVE_ALL
+ mov (BCBEAR),d1 # destination of erroneous access
+
+ mov (REG_ORIG_D0,fp),d2
+ mov d2,(REG_D0,fp)
+ mov -1,d2
+ mov d2,(REG_ORIG_D0,fp)
+
+ add -4,sp
+ mov fp,(12,sp) # frame pointer
+ call io_bus_error[],0
+ jmp restore_all
+
+###############################################################################
+#
+# Miscellaneous exception entry points
+#
+###############################################################################
+ENTRY(nmi_handler)
+ add -4,sp
+ mov d0,(sp)
+ mov (TBR),d0
+ bra __common_exception_nonmi
+
+ENTRY(__common_exception)
+ add -4,sp
+ mov d0,(sp)
+
+__common_exception_aux:
+ mov (TBR),d0
+ and ~EPSW_NMID,epsw # turn NMIs back on if not NMI
+ or EPSW_IE,epsw
+
+__common_exception_nonmi:
+ and 0x0000FFFF,d0 # turn the exception code into a vector
+ # table index
+
+ btst 0x00000007,d0
+ bne 1f
+ cmp 0x00000400,d0
+ bge 1f
+
+ SAVE_ALL # build the stack frame
+
+ mov (REG_D0,fp),a2 # get the exception number
+ mov (REG_ORIG_D0,fp),d0
+ mov d0,(REG_D0,fp)
+ mov -1,d0
+ mov d0,(REG_ORIG_D0,fp)
+
+#ifdef CONFIG_GDBSTUB
+ btst 0x01,(gdbstub_busy)
+ beq 2f
+ and ~EPSW_IE,epsw
+ mov fp,d0
+ mov a2,d1
+ call gdbstub_exception[],0 # gdbstub itself caused an exception
+ bra restore_all
+2:
+#endif
+
+ mov fp,d0 # arg 0: stacked register file
+ mov a2,d1 # arg 1: exception number
+ lsr 1,a2
+
+ mov (exception_table,a2),a2
+ calls (a2)
+ jmp ret_from_exception
+
+1: pi # BUG() equivalent
+
+###############################################################################
+#
+# Exception handler functions table
+#
+###############################################################################
+ .data
+ENTRY(exception_table)
+ .rept 0x400>>1
+ .long uninitialised_exception
+ .endr
+ .previous
+
+###############################################################################
+#
+# Change an entry in the exception table
+# - D0 exception code, D1 handler
+#
+###############################################################################
+ENTRY(set_excp_vector)
+ lsr 1,d0
+ add exception_table,d0
+ mov d1,(d0)
+ mov 4,d1
+#if defined(CONFIG_MN10300_CACHE_WBACK)
+ jmp mn10300_dcache_flush_inv_range2
+#else
+ ret [],0
+#endif
+
+###############################################################################
+#
+# System call table
+#
+###############################################################################
+ .data
+ENTRY(sys_call_table)
+ .long sys_restart_syscall /* 0 */
+ .long sys_exit
+ .long sys_fork
+ .long sys_read
+ .long sys_write
+ .long sys_open /* 5 */
+ .long sys_close
+ .long sys_waitpid
+ .long sys_creat
+ .long sys_link
+ .long sys_unlink /* 10 */
+ .long sys_execve
+ .long sys_chdir
+ .long sys_time
+ .long sys_mknod
+ .long sys_chmod /* 15 */
+ .long sys_lchown16
+ .long sys_ni_syscall /* old break syscall holder */
+ .long sys_stat
+ .long sys_lseek
+ .long sys_getpid /* 20 */
+ .long sys_mount
+ .long sys_oldumount
+ .long sys_setuid16
+ .long sys_getuid16
+ .long sys_stime /* 25 */
+ .long sys_ptrace
+ .long sys_alarm
+ .long sys_fstat
+ .long sys_pause
+ .long sys_utime /* 30 */
+ .long sys_ni_syscall /* old stty syscall holder */
+ .long sys_ni_syscall /* old gtty syscall holder */
+ .long sys_access
+ .long sys_nice
+ .long sys_ni_syscall /* 35 - old ftime syscall holder */
+ .long sys_sync
+ .long sys_kill
+ .long sys_rename
+ .long sys_mkdir
+ .long sys_rmdir /* 40 */
+ .long sys_dup
+ .long sys_pipe
+ .long sys_times
+ .long sys_ni_syscall /* old prof syscall holder */
+ .long sys_brk /* 45 */
+ .long sys_setgid16
+ .long sys_getgid16
+ .long sys_signal
+ .long sys_geteuid16
+ .long sys_getegid16 /* 50 */
+ .long sys_acct
+ .long sys_umount /* recycled never used phys() */
+ .long sys_ni_syscall /* old lock syscall holder */
+ .long sys_ioctl
+ .long sys_fcntl /* 55 */
+ .long sys_ni_syscall /* old mpx syscall holder */
+ .long sys_setpgid
+ .long sys_ni_syscall /* old ulimit syscall holder */
+ .long sys_ni_syscall /* old sys_olduname */
+ .long sys_umask /* 60 */
+ .long sys_chroot
+ .long sys_ustat
+ .long sys_dup2
+ .long sys_getppid
+ .long sys_getpgrp /* 65 */
+ .long sys_setsid
+ .long sys_sigaction
+ .long sys_sgetmask
+ .long sys_ssetmask
+ .long sys_setreuid16 /* 70 */
+ .long sys_setregid16
+ .long sys_sigsuspend
+ .long sys_sigpending
+ .long sys_sethostname
+ .long sys_setrlimit /* 75 */
+ .long sys_old_getrlimit
+ .long sys_getrusage
+ .long sys_gettimeofday
+ .long sys_settimeofday
+ .long sys_getgroups16 /* 80 */
+ .long sys_setgroups16
+ .long old_select
+ .long sys_symlink
+ .long sys_lstat
+ .long sys_readlink /* 85 */
+ .long sys_uselib
+ .long sys_swapon
+ .long sys_reboot
+ .long old_readdir
+ .long old_mmap /* 90 */
+ .long sys_munmap
+ .long sys_truncate
+ .long sys_ftruncate
+ .long sys_fchmod
+ .long sys_fchown16 /* 95 */
+ .long sys_getpriority
+ .long sys_setpriority
+ .long sys_ni_syscall /* old profil syscall holder */
+ .long sys_statfs
+ .long sys_fstatfs /* 100 */
+ .long sys_ni_syscall /* ioperm */
+ .long sys_socketcall
+ .long sys_syslog
+ .long sys_setitimer
+ .long sys_getitimer /* 105 */
+ .long sys_newstat
+ .long sys_newlstat
+ .long sys_newfstat
+ .long sys_ni_syscall /* old sys_uname */
+ .long sys_ni_syscall /* 110 - iopl */
+ .long sys_vhangup
+ .long sys_ni_syscall /* old "idle" system call */
+ .long sys_ni_syscall /* vm86old */
+ .long sys_wait4
+ .long sys_swapoff /* 115 */
+ .long sys_sysinfo
+ .long sys_ipc
+ .long sys_fsync
+ .long sys_sigreturn
+ .long sys_clone /* 120 */
+ .long sys_setdomainname
+ .long sys_newuname
+ .long sys_ni_syscall /* modify_ldt */
+ .long sys_adjtimex
+ .long sys_mprotect /* 125 */
+ .long sys_sigprocmask
+ .long sys_ni_syscall /* old "create_module" */
+ .long sys_init_module
+ .long sys_delete_module
+ .long sys_ni_syscall /* 130: old "get_kernel_syms" */
+ .long sys_quotactl
+ .long sys_getpgid
+ .long sys_fchdir
+ .long sys_bdflush
+ .long sys_sysfs /* 135 */
+ .long sys_personality
+ .long sys_ni_syscall /* reserved for afs_syscall */
+ .long sys_setfsuid16
+ .long sys_setfsgid16
+ .long sys_llseek /* 140 */
+ .long sys_getdents
+ .long sys_select
+ .long sys_flock
+ .long sys_msync
+ .long sys_readv /* 145 */
+ .long sys_writev
+ .long sys_getsid
+ .long sys_fdatasync
+ .long sys_sysctl
+ .long sys_mlock /* 150 */
+ .long sys_munlock
+ .long sys_mlockall
+ .long sys_munlockall
+ .long sys_sched_setparam
+ .long sys_sched_getparam /* 155 */
+ .long sys_sched_setscheduler
+ .long sys_sched_getscheduler
+ .long sys_sched_yield
+ .long sys_sched_get_priority_max
+ .long sys_sched_get_priority_min /* 160 */
+ .long sys_sched_rr_get_interval
+ .long sys_nanosleep
+ .long sys_mremap
+ .long sys_setresuid16
+ .long sys_getresuid16 /* 165 */
+ .long sys_ni_syscall /* vm86 */
+ .long sys_ni_syscall /* Old sys_query_module */
+ .long sys_poll
+ .long sys_nfsservctl
+ .long sys_setresgid16 /* 170 */
+ .long sys_getresgid16
+ .long sys_prctl
+ .long sys_rt_sigreturn
+ .long sys_rt_sigaction
+ .long sys_rt_sigprocmask /* 175 */
+ .long sys_rt_sigpending
+ .long sys_rt_sigtimedwait
+ .long sys_rt_sigqueueinfo
+ .long sys_rt_sigsuspend
+ .long sys_pread64 /* 180 */
+ .long sys_pwrite64
+ .long sys_chown16
+ .long sys_getcwd
+ .long sys_capget
+ .long sys_capset /* 185 */
+ .long sys_sigaltstack
+ .long sys_sendfile
+ .long sys_ni_syscall /* reserved for streams1 */
+ .long sys_ni_syscall /* reserved for streams2 */
+ .long sys_vfork /* 190 */
+ .long sys_getrlimit
+ .long sys_mmap2
+ .long sys_truncate64
+ .long sys_ftruncate64
+ .long sys_stat64 /* 195 */
+ .long sys_lstat64
+ .long sys_fstat64
+ .long sys_lchown
+ .long sys_getuid
+ .long sys_getgid /* 200 */
+ .long sys_geteuid
+ .long sys_getegid
+ .long sys_setreuid
+ .long sys_setregid
+ .long sys_getgroups /* 205 */
+ .long sys_setgroups
+ .long sys_fchown
+ .long sys_setresuid
+ .long sys_getresuid
+ .long sys_setresgid /* 210 */
+ .long sys_getresgid
+ .long sys_chown
+ .long sys_setuid
+ .long sys_setgid
+ .long sys_setfsuid /* 215 */
+ .long sys_setfsgid
+ .long sys_pivot_root
+ .long sys_mincore
+ .long sys_madvise
+ .long sys_getdents64 /* 220 */
+ .long sys_fcntl64
+ .long sys_ni_syscall /* reserved for TUX */
+ .long sys_ni_syscall
+ .long sys_gettid
+ .long sys_readahead /* 225 */
+ .long sys_setxattr
+ .long sys_lsetxattr
+ .long sys_fsetxattr
+ .long sys_getxattr
+ .long sys_lgetxattr /* 230 */
+ .long sys_fgetxattr
+ .long sys_listxattr
+ .long sys_llistxattr
+ .long sys_flistxattr
+ .long sys_removexattr /* 235 */
+ .long sys_lremovexattr
+ .long sys_fremovexattr
+ .long sys_tkill
+ .long sys_sendfile64
+ .long sys_futex /* 240 */
+ .long sys_sched_setaffinity
+ .long sys_sched_getaffinity
+ .long sys_ni_syscall /* sys_set_thread_area */
+ .long sys_ni_syscall /* sys_get_thread_area */
+ .long sys_io_setup /* 245 */
+ .long sys_io_destroy
+ .long sys_io_getevents
+ .long sys_io_submit
+ .long sys_io_cancel
+ .long sys_fadvise64 /* 250 */
+ .long sys_ni_syscall
+ .long sys_exit_group
+ .long sys_lookup_dcookie
+ .long sys_epoll_create
+ .long sys_epoll_ctl /* 255 */
+ .long sys_epoll_wait
+ .long sys_remap_file_pages
+ .long sys_set_tid_address
+ .long sys_timer_create
+ .long sys_timer_settime /* 260 */
+ .long sys_timer_gettime
+ .long sys_timer_getoverrun
+ .long sys_timer_delete
+ .long sys_clock_settime
+ .long sys_clock_gettime /* 265 */
+ .long sys_clock_getres
+ .long sys_clock_nanosleep
+ .long sys_statfs64
+ .long sys_fstatfs64
+ .long sys_tgkill /* 270 */
+ .long sys_utimes
+ .long sys_fadvise64_64
+ .long sys_ni_syscall /* sys_vserver */
+ .long sys_mbind
+ .long sys_get_mempolicy /* 275 */
+ .long sys_set_mempolicy
+ .long sys_mq_open
+ .long sys_mq_unlink
+ .long sys_mq_timedsend
+ .long sys_mq_timedreceive /* 280 */
+ .long sys_mq_notify
+ .long sys_mq_getsetattr
+ .long sys_kexec_load
+ .long sys_waitid
+ .long sys_ni_syscall /* 285 */ /* available */
+ .long sys_add_key
+ .long sys_request_key
+ .long sys_keyctl
+ .long sys_cacheflush
+ .long sys_ioprio_set /* 290 */
+ .long sys_ioprio_get
+ .long sys_inotify_init
+ .long sys_inotify_add_watch
+ .long sys_inotify_rm_watch
+ .long sys_migrate_pages /* 295 */
+ .long sys_openat
+ .long sys_mkdirat
+ .long sys_mknodat
+ .long sys_fchownat
+ .long sys_futimesat /* 300 */
+ .long sys_fstatat64
+ .long sys_unlinkat
+ .long sys_renameat
+ .long sys_linkat
+ .long sys_symlinkat /* 305 */
+ .long sys_readlinkat
+ .long sys_fchmodat
+ .long sys_faccessat
+ .long sys_pselect6
+ .long sys_ppoll /* 310 */
+ .long sys_unshare
+ .long sys_set_robust_list
+ .long sys_get_robust_list
+ .long sys_splice
+ .long sys_sync_file_range /* 315 */
+ .long sys_tee
+ .long sys_vmsplice
+ .long sys_move_pages
+ .long sys_getcpu
+ .long sys_epoll_pwait /* 320 */
+ .long sys_utimensat
+ .long sys_signalfd
+ .long sys_timerfd_create
+ .long sys_eventfd
+ .long sys_fallocate /* 325 */
+ .long sys_timerfd_settime
+ .long sys_timerfd_gettime
+
+
+nr_syscalls=(.-sys_call_table)/4
--- /dev/null
+/* MN10300 Low level FPU management operations
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <asm/cpu-regs.h>
+
+###############################################################################
+#
+# void fpu_init_state(void)
+# - initialise the FPU
+#
+###############################################################################
+ .globl fpu_init_state
+ .type fpu_init_state,@function
+fpu_init_state:
+ mov epsw,d0
+ or EPSW_FE,epsw
+
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ nop
+ nop
+ nop
+#endif
+ fmov 0,fs0
+ fmov fs0,fs1
+ fmov fs0,fs2
+ fmov fs0,fs3
+ fmov fs0,fs4
+ fmov fs0,fs5
+ fmov fs0,fs6
+ fmov fs0,fs7
+ fmov fs0,fs8
+ fmov fs0,fs9
+ fmov fs0,fs10
+ fmov fs0,fs11
+ fmov fs0,fs12
+ fmov fs0,fs13
+ fmov fs0,fs14
+ fmov fs0,fs15
+ fmov fs0,fs16
+ fmov fs0,fs17
+ fmov fs0,fs18
+ fmov fs0,fs19
+ fmov fs0,fs20
+ fmov fs0,fs21
+ fmov fs0,fs22
+ fmov fs0,fs23
+ fmov fs0,fs24
+ fmov fs0,fs25
+ fmov fs0,fs26
+ fmov fs0,fs27
+ fmov fs0,fs28
+ fmov fs0,fs29
+ fmov fs0,fs30
+ fmov fs0,fs31
+ fmov FPCR_INIT,fpcr
+
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ nop
+ nop
+ nop
+#endif
+ mov d0,epsw
+ ret [],0
+
+ .size fpu_init_state,.-fpu_init_state
+
+###############################################################################
+#
+# void fpu_save(struct fpu_state_struct *)
+# - save the fpu state
+# - note that an FPU Operational exception might occur during this process
+#
+###############################################################################
+ .globl fpu_save
+ .type fpu_save,@function
+fpu_save:
+ mov epsw,d1
+ or EPSW_FE,epsw /* enable the FPU so we can access it */
+
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ nop
+ nop
+#endif
+ mov d0,a0
+ fmov fs0,(a0+)
+ fmov fs1,(a0+)
+ fmov fs2,(a0+)
+ fmov fs3,(a0+)
+ fmov fs4,(a0+)
+ fmov fs5,(a0+)
+ fmov fs6,(a0+)
+ fmov fs7,(a0+)
+ fmov fs8,(a0+)
+ fmov fs9,(a0+)
+ fmov fs10,(a0+)
+ fmov fs11,(a0+)
+ fmov fs12,(a0+)
+ fmov fs13,(a0+)
+ fmov fs14,(a0+)
+ fmov fs15,(a0+)
+ fmov fs16,(a0+)
+ fmov fs17,(a0+)
+ fmov fs18,(a0+)
+ fmov fs19,(a0+)
+ fmov fs20,(a0+)
+ fmov fs21,(a0+)
+ fmov fs22,(a0+)
+ fmov fs23,(a0+)
+ fmov fs24,(a0+)
+ fmov fs25,(a0+)
+ fmov fs26,(a0+)
+ fmov fs27,(a0+)
+ fmov fs28,(a0+)
+ fmov fs29,(a0+)
+ fmov fs30,(a0+)
+ fmov fs31,(a0+)
+ fmov fpcr,d0
+ mov d0,(a0)
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ nop
+ nop
+#endif
+
+ mov d1,epsw
+ ret [],0
+
+ .size fpu_save,.-fpu_save
+
+###############################################################################
+#
+# void fpu_restore(struct fpu_state_struct *)
+# - restore the fpu state
+# - note that an FPU Operational exception might occur during this process
+#
+###############################################################################
+ .globl fpu_restore
+ .type fpu_restore,@function
+fpu_restore:
+ mov epsw,d1
+ or EPSW_FE,epsw /* enable the FPU so we can access it */
+
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ nop
+ nop
+#endif
+ mov d0,a0
+ fmov (a0+),fs0
+ fmov (a0+),fs1
+ fmov (a0+),fs2
+ fmov (a0+),fs3
+ fmov (a0+),fs4
+ fmov (a0+),fs5
+ fmov (a0+),fs6
+ fmov (a0+),fs7
+ fmov (a0+),fs8
+ fmov (a0+),fs9
+ fmov (a0+),fs10
+ fmov (a0+),fs11
+ fmov (a0+),fs12
+ fmov (a0+),fs13
+ fmov (a0+),fs14
+ fmov (a0+),fs15
+ fmov (a0+),fs16
+ fmov (a0+),fs17
+ fmov (a0+),fs18
+ fmov (a0+),fs19
+ fmov (a0+),fs20
+ fmov (a0+),fs21
+ fmov (a0+),fs22
+ fmov (a0+),fs23
+ fmov (a0+),fs24
+ fmov (a0+),fs25
+ fmov (a0+),fs26
+ fmov (a0+),fs27
+ fmov (a0+),fs28
+ fmov (a0+),fs29
+ fmov (a0+),fs30
+ fmov (a0+),fs31
+ mov (a0),d0
+ fmov d0,fpcr
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ nop
+ nop
+ nop
+#endif
+
+ mov d1,epsw
+ ret [],0
+
+ .size fpu_restore,.-fpu_restore
--- /dev/null
+/* MN10300 FPU management
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <asm/uaccess.h>
+#include <asm/fpu.h>
+#include <asm/elf.h>
+#include <asm/exceptions.h>
+
+struct task_struct *fpu_state_owner;
+
+/*
+ * handle an exception due to the FPU being disabled
+ */
+asmlinkage void fpu_disabled(struct pt_regs *regs, enum exception_code code)
+{
+ struct task_struct *tsk = current;
+
+ if (!user_mode(regs))
+ die_if_no_fixup("An FPU Disabled exception happened in"
+ " kernel space\n",
+ regs, code);
+
+#ifdef CONFIG_FPU
+ preempt_disable();
+
+ /* transfer the last process's FPU state to memory */
+ if (fpu_state_owner) {
+ fpu_save(&fpu_state_owner->thread.fpu_state);
+ fpu_state_owner->thread.uregs->epsw &= ~EPSW_FE;
+ }
+
+ /* the current process now owns the FPU state */
+ fpu_state_owner = tsk;
+ regs->epsw |= EPSW_FE;
+
+ /* load the FPU with the current process's FPU state or invent a new
+ * clean one if the process doesn't have one */
+ if (is_using_fpu(tsk)) {
+ fpu_restore(&tsk->thread.fpu_state);
+ } else {
+ fpu_init_state();
+ set_using_fpu(tsk);
+ }
+
+ preempt_enable();
+#else
+ {
+ siginfo_t info;
+
+ info.si_signo = SIGFPE;
+ info.si_errno = 0;
+ info.si_addr = (void *) tsk->thread.uregs->pc;
+ info.si_code = FPE_FLTINV;
+
+ force_sig_info(SIGFPE, &info, tsk);
+ }
+#endif /* CONFIG_FPU */
+}
+
+/*
+ * handle an FPU operational exception
+ * - there's a possibility that if the FPU is asynchronous, the signal might
+ * be meant for a process other than the current one
+ */
+asmlinkage void fpu_exception(struct pt_regs *regs, enum exception_code code)
+{
+ struct task_struct *tsk = fpu_state_owner;
+ siginfo_t info;
+
+ if (!user_mode(regs))
+ die_if_no_fixup("An FPU Operation exception happened in"
+ " kernel space\n",
+ regs, code);
+
+ if (!tsk)
+ die_if_no_fixup("An FPU Operation exception happened,"
+ " but the FPU is not in use",
+ regs, code);
+
+ info.si_signo = SIGFPE;
+ info.si_errno = 0;
+ info.si_addr = (void *) tsk->thread.uregs->pc;
+ info.si_code = FPE_FLTINV;
+
+#ifdef CONFIG_FPU
+ {
+ u32 fpcr;
+
+ /* get FPCR (we need to enable the FPU whilst we do this) */
+ asm volatile(" or %1,epsw \n"
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ " nop \n"
+ " nop \n"
+ " nop \n"
+#endif
+ " fmov fpcr,%0 \n"
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ " nop \n"
+ " nop \n"
+ " nop \n"
+#endif
+ " and %2,epsw \n"
+ : "=&d"(fpcr)
+ : "i"(EPSW_FE), "i"(~EPSW_FE)
+ );
+
+ if (fpcr & FPCR_EC_Z)
+ info.si_code = FPE_FLTDIV;
+ else if (fpcr & FPCR_EC_O)
+ info.si_code = FPE_FLTOVF;
+ else if (fpcr & FPCR_EC_U)
+ info.si_code = FPE_FLTUND;
+ else if (fpcr & FPCR_EC_I)
+ info.si_code = FPE_FLTRES;
+ }
+#endif
+
+ force_sig_info(SIGFPE, &info, tsk);
+}
+
+/*
+ * save the FPU state to a signal context
+ */
+int fpu_setup_sigcontext(struct fpucontext *fpucontext)
+{
+#ifdef CONFIG_FPU
+ struct task_struct *tsk = current;
+
+ if (!is_using_fpu(tsk))
+ return 0;
+
+ /* transfer the current FPU state to memory and cause fpu_init() to be
+ * triggered by the next attempted FPU operation by the current
+ * process.
+ */
+ preempt_disable();
+
+ if (fpu_state_owner == tsk) {
+ fpu_save(&tsk->thread.fpu_state);
+ fpu_state_owner->thread.uregs->epsw &= ~EPSW_FE;
+ fpu_state_owner = NULL;
+ }
+
+ preempt_enable();
+
+ /* we no longer have a valid current FPU state */
+ clear_using_fpu(tsk);
+
+ /* transfer the saved FPU state onto the userspace stack */
+ if (copy_to_user(fpucontext,
+ &tsk->thread.fpu_state,
+ min(sizeof(struct fpu_state_struct),
+ sizeof(struct fpucontext))))
+ return -1;
+
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+/*
+ * kill a process's FPU state during restoration after signal handling
+ */
+void fpu_kill_state(struct task_struct *tsk)
+{
+#ifdef CONFIG_FPU
+ /* disown anything left in the FPU */
+ preempt_disable();
+
+ if (fpu_state_owner == tsk) {
+ fpu_state_owner->thread.uregs->epsw &= ~EPSW_FE;
+ fpu_state_owner = NULL;
+ }
+
+ preempt_enable();
+#endif
+ /* we no longer have a valid current FPU state */
+ clear_using_fpu(tsk);
+}
+
+/*
+ * restore the FPU state from a signal context
+ */
+int fpu_restore_sigcontext(struct fpucontext *fpucontext)
+{
+ struct task_struct *tsk = current;
+ int ret;
+
+ /* load up the old FPU state */
+ ret = copy_from_user(&tsk->thread.fpu_state,
+ fpucontext,
+ min(sizeof(struct fpu_state_struct),
+ sizeof(struct fpucontext)));
+ if (!ret)
+ set_using_fpu(tsk);
+
+ return ret;
+}
+
+/*
+ * fill in the FPU structure for a core dump
+ */
+int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpreg)
+{
+ struct task_struct *tsk = current;
+ int fpvalid;
+
+ fpvalid = is_using_fpu(tsk);
+ if (fpvalid) {
+ unlazy_fpu(tsk);
+ memcpy(fpreg, &tsk->thread.fpu_state, sizeof(*fpreg));
+ }
+
+ return fpvalid;
+}
--- /dev/null
+###############################################################################
+#
+# MN10300 Low-level cache purging routines for gdbstub
+#
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Written by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+###############################################################################
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/smp.h>
+#include <asm/cache.h>
+#include <asm/cpu-regs.h>
+#include <asm/exceptions.h>
+#include <asm/frame.inc>
+#include <asm/serial-regs.h>
+
+ .text
+
+###############################################################################
+#
+# GDB stub cache purge
+#
+###############################################################################
+ .type gdbstub_purge_cache,@function
+ENTRY(gdbstub_purge_cache)
+ #######################################################################
+ # read the addresses tagged in the cache's tag RAM and attempt to flush
+ # those addresses specifically
+ # - we rely on the hardware to filter out invalid tag entry addresses
+ mov DCACHE_TAG(0,0),a0 # dcache tag RAM access address
+ mov DCACHE_PURGE(0,0),a1 # dcache purge request address
+ mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of entries
+
+mn10300_dcache_flush_loop:
+ mov (a0),d0
+ and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0
+ or L1_CACHE_TAG_VALID,d0 # retain valid entries in the
+ # cache
+ mov d0,(a1) # conditional purge
+
+mn10300_dcache_flush_skip:
+ add L1_CACHE_BYTES,a0
+ add L1_CACHE_BYTES,a1
+ add -1,d1
+ bne mn10300_dcache_flush_loop
+
+;; # unconditionally flush and invalidate the dcache
+;; mov DCACHE_PURGE(0,0),a1 # dcache purge request address
+;; mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of
+;; # entries
+;;
+;; gdbstub_purge_cache__dcache_loop:
+;; mov (a1),d0 # unconditional purge
+;;
+;; add L1_CACHE_BYTES,a1
+;; add -1,d1
+;; bne gdbstub_purge_cache__dcache_loop
+
+ #######################################################################
+ # now invalidate the icache
+ mov CHCTR,a0
+ movhu (a0),a1
+
+ mov epsw,d1
+ and ~EPSW_IE,epsw
+ nop
+ nop
+
+ # disable the icache
+ and ~CHCTR_ICEN,d0
+ movhu d0,(a0)
+
+ # and wait for it to calm down
+ setlb
+ movhu (a0),d0
+ btst CHCTR_ICBUSY,d0
+ lne
+
+ # invalidate
+ or CHCTR_ICINV,d0
+ movhu d0,(a0)
+
+ # wait for the cache to finish
+ mov CHCTR,a0
+ setlb
+ movhu (a0),d0
+ btst CHCTR_ICBUSY,d0
+ lne
+
+ # and reenable it
+ movhu a1,(a0)
+ movhu (a0),d0 # read back to flush
+ # (SIGILLs all over without this)
+
+ mov d1,epsw
+
+ ret [],0
+
+ .size gdbstub_purge_cache,.-gdbstub_purge_cache
--- /dev/null
+###############################################################################
+#
+# 16550 serial Rx interrupt handler for gdbstub I/O
+#
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Written by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+###############################################################################
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/smp.h>
+#include <asm/cpu-regs.h>
+#include <asm/thread_info.h>
+#include <asm/frame.inc>
+#include <asm/intctl-regs.h>
+#include <asm/unit/serial.h>
+
+ .text
+
+###############################################################################
+#
+# GDB stub serial receive interrupt entry point
+# - intended to run at interrupt priority 0
+#
+###############################################################################
+ .globl gdbstub_io_rx_handler
+ .type gdbstub_io_rx_handler,@function
+gdbstub_io_rx_handler:
+ movm [d2,d3,a2,a3],(sp)
+
+#if 1
+ movbu (GDBPORT_SERIAL_IIR),d2
+#endif
+
+ mov (gdbstub_rx_inp),a3
+gdbstub_io_rx_more:
+ mov a3,a2
+ add 2,a3
+ and 0x00000fff,a3
+ mov (gdbstub_rx_outp),d3
+ cmp a3,d3
+ beq gdbstub_io_rx_overflow
+
+ movbu (GDBPORT_SERIAL_LSR),d3
+ btst UART_LSR_DR,d3
+ beq gdbstub_io_rx_done
+ movbu (GDBPORT_SERIAL_RX),d2
+ movbu d3,(gdbstub_rx_buffer+1,a2)
+ movbu d2,(gdbstub_rx_buffer,a2)
+ mov a3,(gdbstub_rx_inp)
+ bra gdbstub_io_rx_more
+
+gdbstub_io_rx_done:
+ mov GxICR_DETECT,d2
+ movbu d2,(XIRQxICR(GDBPORT_SERIAL_IRQ)) # ACK the interrupt
+ movhu (XIRQxICR(GDBPORT_SERIAL_IRQ)),d2 # flush
+ movm (sp),[d2,d3,a2,a3]
+ bset 0x01,(gdbstub_busy)
+ beq gdbstub_io_rx_enter
+ rti
+
+gdbstub_io_rx_overflow:
+ bset 0x01,(gdbstub_rx_overflow)
+ bra gdbstub_io_rx_done
+
+gdbstub_io_rx_enter:
+ or EPSW_IE|EPSW_IM_1,epsw
+ add -4,sp
+ SAVE_ALL
+
+ mov 0xffffffff,d0
+ mov d0,(REG_ORIG_D0,fp)
+ mov 0x280,d1
+
+ mov fp,d0
+ call gdbstub_rx_irq[],0 # gdbstub_rx_irq(regs,excep)
+
+ and ~EPSW_IE,epsw
+ bclr 0x01,(gdbstub_busy)
+
+ .globl gdbstub_return
+gdbstub_return:
+ RESTORE_ALL
+
+ .size gdbstub_io_rx_handler,.-gdbstub_io_rx_handler
--- /dev/null
+/* 16550 serial driver for gdbstub I/O
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/nmi.h>
+
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/gdb-stub.h>
+#include <asm/exceptions.h>
+#include <asm/serial-regs.h>
+#include <asm/unit/serial.h>
+
+/*
+ * initialise the GDB stub
+ */
+void gdbstub_io_init(void)
+{
+ u16 tmp;
+
+ /* set up the serial port */
+ GDBPORT_SERIAL_LCR = UART_LCR_WLEN8; /* 1N8 */
+ GDBPORT_SERIAL_FCR = (UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
+ UART_FCR_CLEAR_XMIT);
+
+ FLOWCTL_CLEAR(DTR);
+ FLOWCTL_SET(RTS);
+
+ gdbstub_io_set_baud(115200);
+
+ /* we want to get serial receive interrupts */
+ XIRQxICR(GDBPORT_SERIAL_IRQ) = 0;
+ tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
+
+ IVAR0 = EXCEP_IRQ_LEVEL0;
+ set_intr_stub(EXCEP_IRQ_LEVEL0, gdbstub_io_rx_handler);
+
+ XIRQxICR(GDBPORT_SERIAL_IRQ) &= ~GxICR_REQUEST;
+ XIRQxICR(GDBPORT_SERIAL_IRQ) = GxICR_ENABLE | GxICR_LEVEL_0;
+ tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
+
+ GDBPORT_SERIAL_IER = UART_IER_RDI | UART_IER_RLSI;
+
+ /* permit level 0 IRQs to take place */
+ asm volatile(
+ " and %0,epsw \n"
+ " or %1,epsw \n"
+ :
+ : "i"(~EPSW_IM), "i"(EPSW_IE | EPSW_IM_1)
+ );
+}
+
+/*
+ * set up the GDB stub serial port baud rate timers
+ */
+void gdbstub_io_set_baud(unsigned baud)
+{
+ unsigned value;
+ u8 lcr;
+
+ value = 18432000 / 16 / baud;
+
+ lcr = GDBPORT_SERIAL_LCR;
+ GDBPORT_SERIAL_LCR |= UART_LCR_DLAB;
+ GDBPORT_SERIAL_DLL = value & 0xff;
+ GDBPORT_SERIAL_DLM = (value >> 8) & 0xff;
+ GDBPORT_SERIAL_LCR = lcr;
+}
+
+/*
+ * wait for a character to come from the debugger
+ */
+int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
+{
+ unsigned ix;
+ u8 ch, st;
+
+ *_ch = 0xff;
+
+ if (gdbstub_rx_unget) {
+ *_ch = gdbstub_rx_unget;
+ gdbstub_rx_unget = 0;
+ return 0;
+ }
+
+ try_again:
+ /* pull chars out of the buffer */
+ ix = gdbstub_rx_outp;
+ if (ix == gdbstub_rx_inp) {
+ if (nonblock)
+ return -EAGAIN;
+#ifdef CONFIG_MN10300_WD_TIMER
+ watchdog_alert_counter = 0;
+#endif /* CONFIG_MN10300_WD_TIMER */
+ goto try_again;
+ }
+
+ ch = gdbstub_rx_buffer[ix++];
+ st = gdbstub_rx_buffer[ix++];
+ gdbstub_rx_outp = ix & 0x00000fff;
+
+ if (st & UART_LSR_BI) {
+ gdbstub_proto("### GDB Rx Break Detected ###\n");
+ return -EINTR;
+ } else if (st & (UART_LSR_FE | UART_LSR_OE | UART_LSR_PE)) {
+ gdbstub_proto("### GDB Rx Error (st=%02x) ###\n", st);
+ return -EIO;
+ } else {
+ gdbstub_proto("### GDB Rx %02x (st=%02x) ###\n", ch, st);
+ *_ch = ch & 0x7f;
+ return 0;
+ }
+}
+
+/*
+ * send a character to the debugger
+ */
+void gdbstub_io_tx_char(unsigned char ch)
+{
+ FLOWCTL_SET(DTR);
+ LSR_WAIT_FOR(THRE);
+ /* FLOWCTL_WAIT_FOR(CTS); */
+
+ if (ch == 0x0a) {
+ GDBPORT_SERIAL_TX = 0x0d;
+ LSR_WAIT_FOR(THRE);
+ /* FLOWCTL_WAIT_FOR(CTS); */
+ }
+ GDBPORT_SERIAL_TX = ch;
+
+ FLOWCTL_CLEAR(DTR);
+}
+
+/*
+ * send a character to the debugger
+ */
+void gdbstub_io_tx_flush(void)
+{
+ LSR_WAIT_FOR(TEMT);
+ LSR_WAIT_FOR(THRE);
+ FLOWCTL_CLEAR(DTR);
+}
--- /dev/null
+###############################################################################
+#
+# MN10300 On-chip serial Rx interrupt handler for GDB stub I/O
+#
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Written by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+###############################################################################
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/smp.h>
+#include <asm/thread_info.h>
+#include <asm/cpu-regs.h>
+#include <asm/frame.inc>
+#include <asm/intctl-regs.h>
+#include <asm/unit/serial.h>
+#include "mn10300-serial.h"
+
+ .text
+
+###############################################################################
+#
+# GDB stub serial receive interrupt entry point
+# - intended to run at interrupt priority 0
+#
+###############################################################################
+ .globl gdbstub_io_rx_handler
+ .type gdbstub_io_rx_handler,@function
+gdbstub_io_rx_handler:
+ movm [d2,d3,a2,a3],(sp)
+
+ mov (gdbstub_rx_inp),a3
+gdbstub_io_rx_more:
+ mov a3,a2
+ add 2,a3
+ and PAGE_SIZE_asm-1,a3
+ mov (gdbstub_rx_outp),d3
+ cmp a3,d3
+ beq gdbstub_io_rx_overflow
+
+ movbu (SCgSTR),d3
+ btst SC01STR_RBF,d3
+ beq gdbstub_io_rx_done
+ movbu (SCgRXB),d2
+ movbu d3,(gdbstub_rx_buffer+1,a2)
+ movbu d2,(gdbstub_rx_buffer,a2)
+ mov a3,(gdbstub_rx_inp)
+ bra gdbstub_io_rx_more
+
+gdbstub_io_rx_done:
+ mov GxICR_DETECT,d2
+ movbu d2,(GxICR(SCgRXIRQ)) # ACK the interrupt
+ movhu (GxICR(SCgRXIRQ)),d2 # flush
+
+ movm (sp),[d2,d3,a2,a3]
+ bset 0x01,(gdbstub_busy)
+ beq gdbstub_io_rx_enter
+ rti
+
+gdbstub_io_rx_overflow:
+ bset 0x01,(gdbstub_rx_overflow)
+ bra gdbstub_io_rx_done
+
+###############################################################################
+#
+# debugging interrupt - enter the GDB stub proper
+#
+###############################################################################
+gdbstub_io_rx_enter:
+ or EPSW_IE|EPSW_IM_1,epsw
+ add -4,sp
+ SAVE_ALL
+
+ mov 0xffffffff,d0
+ mov d0,(REG_ORIG_D0,fp)
+ mov 0x280,d1
+
+ mov fp,d0
+ call gdbstub_rx_irq[],0 # gdbstub_io_rx_irq(regs,excep)
+
+ and ~EPSW_IE,epsw
+ bclr 0x01,(gdbstub_busy)
+
+ .globl gdbstub_return
+gdbstub_return:
+ RESTORE_ALL
+
+ .size gdbstub_io_rx_handler,.-gdbstub_io_rx_handler
--- /dev/null
+/* MN10300 On-chip serial driver for gdbstub I/O
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/gdb-stub.h>
+#include <asm/exceptions.h>
+#include <asm/unit/clock.h>
+#include "mn10300-serial.h"
+
+#if defined(CONFIG_GDBSTUB_ON_TTYSM0)
+struct mn10300_serial_port *const gdbstub_port = &mn10300_serial_port_sif0;
+#elif defined(CONFIG_GDBSTUB_ON_TTYSM1)
+struct mn10300_serial_port *const gdbstub_port = &mn10300_serial_port_sif1;
+#else
+struct mn10300_serial_port *const gdbstub_port = &mn10300_serial_port_sif2;
+#endif
+
+
+/*
+ * initialise the GDB stub I/O routines
+ */
+void __init gdbstub_io_init(void)
+{
+ uint16_t scxctr;
+ int tmp;
+
+ switch (gdbstub_port->clock_src) {
+ case MNSCx_CLOCK_SRC_IOCLK:
+ gdbstub_port->ioclk = MN10300_IOCLK;
+ break;
+
+#ifdef MN10300_IOBCLK
+ case MNSCx_CLOCK_SRC_IOBCLK:
+ gdbstub_port->ioclk = MN10300_IOBCLK;
+ break;
+#endif
+ default:
+ BUG();
+ }
+
+ /* set up the serial port */
+ gdbstub_io_set_baud(115200);
+
+ /* we want to get serial receive interrupts */
+ set_intr_level(gdbstub_port->rx_irq, GxICR_LEVEL_0);
+ set_intr_level(gdbstub_port->tx_irq, GxICR_LEVEL_0);
+ set_intr_stub(EXCEP_IRQ_LEVEL0, gdbstub_io_rx_handler);
+
+ *gdbstub_port->rx_icr |= GxICR_ENABLE;
+ tmp = *gdbstub_port->rx_icr;
+
+ /* enable the device */
+ scxctr = SC01CTR_CLN_8BIT; /* 1N8 */
+ switch (gdbstub_port->div_timer) {
+ case MNSCx_DIV_TIMER_16BIT:
+ scxctr |= SC0CTR_CK_TM8UFLOW_8; /* == SC1CTR_CK_TM9UFLOW_8
+ == SC2CTR_CK_TM10UFLOW_8 */
+ break;
+
+ case MNSCx_DIV_TIMER_8BIT:
+ scxctr |= SC0CTR_CK_TM2UFLOW_8;
+ break;
+ }
+
+ scxctr |= SC01CTR_TXE | SC01CTR_RXE;
+
+ *gdbstub_port->_control = scxctr;
+ tmp = *gdbstub_port->_control;
+
+ /* permit level 0 IRQs only */
+ asm volatile(
+ " and %0,epsw \n"
+ " or %1,epsw \n"
+ :
+ : "i"(~EPSW_IM), "i"(EPSW_IE|EPSW_IM_1)
+ );
+}
+
+/*
+ * set up the GDB stub serial port baud rate timers
+ */
+void gdbstub_io_set_baud(unsigned baud)
+{
+ const unsigned bits = 10; /* 1 [start] + 8 [data] + 0 [parity] +
+ * 1 [stop] */
+ unsigned long ioclk = gdbstub_port->ioclk;
+ unsigned xdiv, tmp;
+ uint16_t tmxbr;
+ uint8_t tmxmd;
+
+ if (!baud) {
+ baud = 9600;
+ } else if (baud == 134) {
+ baud = 269; /* 134 is really 134.5 */
+ xdiv = 2;
+ }
+
+try_alternative:
+ xdiv = 1;
+
+ switch (gdbstub_port->div_timer) {
+ case MNSCx_DIV_TIMER_16BIT:
+ tmxmd = TM8MD_SRC_IOCLK;
+ tmxbr = tmp = (ioclk / (baud * xdiv) + 4) / 8 - 1;
+ if (tmp > 0 && tmp <= 65535)
+ goto timer_okay;
+
+ tmxmd = TM8MD_SRC_IOCLK_8;
+ tmxbr = tmp = (ioclk / (baud * 8 * xdiv) + 4) / 8 - 1;
+ if (tmp > 0 && tmp <= 65535)
+ goto timer_okay;
+
+ tmxmd = TM8MD_SRC_IOCLK_32;
+ tmxbr = tmp = (ioclk / (baud * 32 * xdiv) + 4) / 8 - 1;
+ if (tmp > 0 && tmp <= 65535)
+ goto timer_okay;
+
+ break;
+
+ case MNSCx_DIV_TIMER_8BIT:
+ tmxmd = TM2MD_SRC_IOCLK;
+ tmxbr = tmp = (ioclk / (baud * xdiv) + 4) / 8 - 1;
+ if (tmp > 0 && tmp <= 255)
+ goto timer_okay;
+
+ tmxmd = TM2MD_SRC_IOCLK_8;
+ tmxbr = tmp = (ioclk / (baud * 8 * xdiv) + 4) / 8 - 1;
+ if (tmp > 0 && tmp <= 255)
+ goto timer_okay;
+
+ tmxmd = TM2MD_SRC_IOCLK_32;
+ tmxbr = tmp = (ioclk / (baud * 32 * xdiv) + 4) / 8 - 1;
+ if (tmp > 0 && tmp <= 255)
+ goto timer_okay;
+ break;
+ }
+
+ /* as a last resort, if the quotient is zero, default to 9600 bps */
+ baud = 9600;
+ goto try_alternative;
+
+timer_okay:
+ gdbstub_port->uart.timeout = (2 * bits * HZ) / baud;
+ gdbstub_port->uart.timeout += HZ / 50;
+
+ /* set the timer to produce the required baud rate */
+ switch (gdbstub_port->div_timer) {
+ case MNSCx_DIV_TIMER_16BIT:
+ *gdbstub_port->_tmxmd = 0;
+ *gdbstub_port->_tmxbr = tmxbr;
+ *gdbstub_port->_tmxmd = TM8MD_INIT_COUNTER;
+ *gdbstub_port->_tmxmd = tmxmd | TM8MD_COUNT_ENABLE;
+ break;
+
+ case MNSCx_DIV_TIMER_8BIT:
+ *gdbstub_port->_tmxmd = 0;
+ *(volatile u8 *) gdbstub_port->_tmxbr = (u8)tmxbr;
+ *gdbstub_port->_tmxmd = TM2MD_INIT_COUNTER;
+ *gdbstub_port->_tmxmd = tmxmd | TM2MD_COUNT_ENABLE;
+ break;
+ }
+}
+
+/*
+ * wait for a character to come from the debugger
+ */
+int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
+{
+ unsigned ix;
+ u8 ch, st;
+
+ *_ch = 0xff;
+
+ if (gdbstub_rx_unget) {
+ *_ch = gdbstub_rx_unget;
+ gdbstub_rx_unget = 0;
+ return 0;
+ }
+
+try_again:
+ /* pull chars out of the buffer */
+ ix = gdbstub_rx_outp;
+ if (ix == gdbstub_rx_inp) {
+ if (nonblock)
+ return -EAGAIN;
+#ifdef CONFIG_MN10300_WD_TIMER
+ watchdog_alert_counter = 0;
+#endif /* CONFIG_MN10300_WD_TIMER */
+ goto try_again;
+ }
+
+ ch = gdbstub_rx_buffer[ix++];
+ st = gdbstub_rx_buffer[ix++];
+ gdbstub_rx_outp = ix & (PAGE_SIZE - 1);
+
+ st &= SC01STR_RXF | SC01STR_RBF | SC01STR_FEF | SC01STR_PEF |
+ SC01STR_OEF;
+
+ /* deal with what we've got
+ * - note that the UART doesn't do BREAK-detection for us
+ */
+ if (st & SC01STR_FEF && ch == 0) {
+ switch (gdbstub_port->rx_brk) {
+ case 0: gdbstub_port->rx_brk = 1; goto try_again;
+ case 1: gdbstub_port->rx_brk = 2; goto try_again;
+ case 2:
+ gdbstub_port->rx_brk = 3;
+ gdbstub_proto("### GDB MNSERIAL Rx Break Detected"
+ " ###\n");
+ return -EINTR;
+ default:
+ goto try_again;
+ }
+ } else if (st & SC01STR_FEF) {
+ if (gdbstub_port->rx_brk)
+ goto try_again;
+
+ gdbstub_proto("### GDB MNSERIAL Framing Error ###\n");
+ return -EIO;
+ } else if (st & SC01STR_OEF) {
+ if (gdbstub_port->rx_brk)
+ goto try_again;
+
+ gdbstub_proto("### GDB MNSERIAL Overrun Error ###\n");
+ return -EIO;
+ } else if (st & SC01STR_PEF) {
+ if (gdbstub_port->rx_brk)
+ goto try_again;
+
+ gdbstub_proto("### GDB MNSERIAL Parity Error ###\n");
+ return -EIO;
+ } else {
+ /* look for the tail-end char on a break run */
+ if (gdbstub_port->rx_brk == 3) {
+ switch (ch) {
+ case 0xFF:
+ case 0xFE:
+ case 0xFC:
+ case 0xF8:
+ case 0xF0:
+ case 0xE0:
+ case 0xC0:
+ case 0x80:
+ case 0x00:
+ gdbstub_port->rx_brk = 0;
+ goto try_again;
+ default:
+ break;
+ }
+ }
+
+ gdbstub_port->rx_brk = 0;
+ gdbstub_io("### GDB Rx %02x (st=%02x) ###\n", ch, st);
+ *_ch = ch & 0x7f;
+ return 0;
+ }
+}
+
+/*
+ * send a character to the debugger
+ */
+void gdbstub_io_tx_char(unsigned char ch)
+{
+ while (*gdbstub_port->_status & SC01STR_TBF)
+ continue;
+
+ if (ch == 0x0a) {
+ *(u8 *) gdbstub_port->_txb = 0x0d;
+ while (*gdbstub_port->_status & SC01STR_TBF)
+ continue;
+ }
+
+ *(u8 *) gdbstub_port->_txb = ch;
+}
+
+/*
+ * flush the transmission buffers
+ */
+void gdbstub_io_tx_flush(void)
+{
+ while (*gdbstub_port->_status & (SC01STR_TBF | SC01STR_TXF))
+ continue;
+}
--- /dev/null
+###############################################################################
+#
+# MN10300 Low-level gdbstub routines
+#
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Written by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+###############################################################################
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/smp.h>
+#include <asm/cache.h>
+#include <asm/cpu-regs.h>
+#include <asm/exceptions.h>
+#include <asm/frame.inc>
+#include <asm/serial-regs.h>
+
+ .text
+
+###############################################################################
+#
+# GDB stub read memory with guard
+# - D0 holds the memory address to read
+# - D1 holds the address to store the byte into
+#
+###############################################################################
+ .globl gdbstub_read_byte_guard
+ .globl gdbstub_read_byte_cont
+ENTRY(gdbstub_read_byte)
+ mov d0,a0
+ mov d1,a1
+ clr d0
+gdbstub_read_byte_guard:
+ movbu (a0),d1
+gdbstub_read_byte_cont:
+ movbu d1,(a1)
+ ret [],0
+
+ .globl gdbstub_read_word_guard
+ .globl gdbstub_read_word_cont
+ENTRY(gdbstub_read_word)
+ mov d0,a0
+ mov d1,a1
+ clr d0
+gdbstub_read_word_guard:
+ movhu (a0),d1
+gdbstub_read_word_cont:
+ movhu d1,(a1)
+ ret [],0
+
+ .globl gdbstub_read_dword_guard
+ .globl gdbstub_read_dword_cont
+ENTRY(gdbstub_read_dword)
+ mov d0,a0
+ mov d1,a1
+ clr d0
+gdbstub_read_dword_guard:
+ mov (a0),d1
+gdbstub_read_dword_cont:
+ mov d1,(a1)
+ ret [],0
+
+###############################################################################
+#
+# GDB stub write memory with guard
+# - D0 holds the byte to store
+# - D1 holds the memory address to write
+#
+###############################################################################
+ .globl gdbstub_write_byte_guard
+ .globl gdbstub_write_byte_cont
+ENTRY(gdbstub_write_byte)
+ mov d0,a0
+ mov d1,a1
+ clr d0
+gdbstub_write_byte_guard:
+ movbu a0,(a1)
+gdbstub_write_byte_cont:
+ ret [],0
+
+ .globl gdbstub_write_word_guard
+ .globl gdbstub_write_word_cont
+ENTRY(gdbstub_write_word)
+ mov d0,a0
+ mov d1,a1
+ clr d0
+gdbstub_write_word_guard:
+ movhu a0,(a1)
+gdbstub_write_word_cont:
+ ret [],0
+
+ .globl gdbstub_write_dword_guard
+ .globl gdbstub_write_dword_cont
+ENTRY(gdbstub_write_dword)
+ mov d0,a0
+ mov d1,a1
+ clr d0
+gdbstub_write_dword_guard:
+ mov a0,(a1)
+gdbstub_write_dword_cont:
+ ret [],0
+
+###############################################################################
+#
+# GDB stub BUG() trap
+#
+###############################################################################
+ENTRY(__gdbstub_bug_trap)
+ .byte 0xF7,0xF7 # don't use 0xFF as the JTAG unit preempts that
+ ret [],0
--- /dev/null
+/* MN10300 GDB stub
+ *
+ * Originally written by Glenn Engel, Lake Stevens Instrument Division
+ *
+ * Contributed by HP Systems
+ *
+ * Modified for SPARC by Stu Grossman, Cygnus Support.
+ *
+ * Modified for Linux/MIPS (and MIPS in general) by Andreas Busse
+ * Send complaints, suggestions etc. to <andy@waldorf-gmbh.de>
+ *
+ * Copyright (C) 1995 Andreas Busse
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Modified for Linux/mn10300 by David Howells <dhowells@redhat.com>
+ */
+
+/*
+ * To enable debugger support, two things need to happen. One, a
+ * call to set_debug_traps() is necessary in order to allow any breakpoints
+ * or error conditions to be properly intercepted and reported to gdb.
+ * Two, a breakpoint needs to be generated to begin communication. This
+ * is most easily accomplished by a call to breakpoint(). Breakpoint()
+ * simulates a breakpoint by executing a BREAK instruction.
+ *
+ *
+ * The following gdb commands are supported:
+ *
+ * command function Return value
+ *
+ * g return the value of the CPU registers hex data or ENN
+ * G set the value of the CPU registers OK or ENN
+ *
+ * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
+ * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
+ *
+ * c Resume at current address SNN ( signal NN)
+ * cAA..AA Continue at address AA..AA SNN
+ *
+ * s Step one instruction SNN
+ * sAA..AA Step one instruction from AA..AA SNN
+ *
+ * k kill
+ *
+ * ? What was the last sigval ? SNN (signal NN)
+ *
+ * bBB..BB Set baud rate to BB..BB OK or BNN, then sets
+ * baud rate
+ *
+ * All commands and responses are sent with a packet which includes a
+ * checksum. A packet consists of
+ *
+ * $<packet info>#<checksum>.
+ *
+ * where
+ * <packet info> :: <characters representing the command or response>
+ * <checksum> :: < two hex digits computed as modulo 256 sum of <packetinfo>>
+ *
+ * When a packet is received, it is first acknowledged with either '+' or '-'.
+ * '+' indicates a successful transfer. '-' indicates a failed transfer.
+ *
+ * Example:
+ *
+ * Host: Reply:
+ * $m0,10#2a +$00010203040506070809101112131415#42
+ *
+ *
+ * ==============
+ * MORE EXAMPLES:
+ * ==============
+ *
+ * For reference -- the following are the steps that one
+ * company took (RidgeRun Inc) to get remote gdb debugging
+ * going. In this scenario the host machine was a PC and the
+ * target platform was a Galileo EVB64120A MIPS evaluation
+ * board.
+ *
+ * Step 1:
+ * First download gdb-5.0.tar.gz from the internet.
+ * and then build/install the package.
+ *
+ * Example:
+ * $ tar zxf gdb-5.0.tar.gz
+ * $ cd gdb-5.0
+ * $ ./configure --target=am33_2.0-linux-gnu
+ * $ make
+ * $ install
+ * am33_2.0-linux-gnu-gdb
+ *
+ * Step 2:
+ * Configure linux for remote debugging and build it.
+ *
+ * Example:
+ * $ cd ~/linux
+ * $ make menuconfig <go to "Kernel Hacking" and turn on remote debugging>
+ * $ make dep; make vmlinux
+ *
+ * Step 3:
+ * Download the kernel to the remote target and start
+ * the kernel running. It will promptly halt and wait
+ * for the host gdb session to connect. It does this
+ * since the "Kernel Hacking" option has defined
+ * CONFIG_REMOTE_DEBUG which in turn enables your calls
+ * to:
+ * set_debug_traps();
+ * breakpoint();
+ *
+ * Step 4:
+ * Start the gdb session on the host.
+ *
+ * Example:
+ * $ am33_2.0-linux-gnu-gdb vmlinux
+ * (gdb) set remotebaud 115200
+ * (gdb) target remote /dev/ttyS1
+ * ...at this point you are connected to
+ * the remote target and can use gdb
+ * in the normal fasion. Setting
+ * breakpoints, single stepping,
+ * printing variables, etc.
+ *
+ */
+
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/bug.h>
+
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/gdb-stub.h>
+#include <asm/exceptions.h>
+#include <asm/cacheflush.h>
+#include <asm/serial-regs.h>
+#include <asm/busctl-regs.h>
+#include <asm/unit/leds.h>
+#include <asm/unit/serial.h>
+
+/* define to use F7F7 rather than FF which is subverted by JTAG debugger */
+#undef GDBSTUB_USE_F7F7_AS_BREAKPOINT
+
+/*
+ * BUFMAX defines the maximum number of characters in inbound/outbound buffers
+ * at least NUMREGBYTES*2 are needed for register packets
+ */
+#define BUFMAX 2048
+
+static const char gdbstub_banner[] =
+ "Linux/MN10300 GDB Stub (c) RedHat 2007\n";
+
+u8 gdbstub_rx_buffer[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
+u32 gdbstub_rx_inp;
+u32 gdbstub_rx_outp;
+u8 gdbstub_busy;
+u8 gdbstub_rx_overflow;
+u8 gdbstub_rx_unget;
+
+static u8 gdbstub_flush_caches;
+static char input_buffer[BUFMAX];
+static char output_buffer[BUFMAX];
+static char trans_buffer[BUFMAX];
+
+static const char hexchars[] = "0123456789abcdef";
+
+struct gdbstub_bkpt {
+ u8 *addr; /* address of breakpoint */
+ u8 len; /* size of breakpoint */
+ u8 origbytes[7]; /* original bytes */
+};
+
+static struct gdbstub_bkpt gdbstub_bkpts[256];
+
+/*
+ * local prototypes
+ */
+static void getpacket(char *buffer);
+static int putpacket(char *buffer);
+static int computeSignal(enum exception_code excep);
+static int hex(unsigned char ch);
+static int hexToInt(char **ptr, int *intValue);
+static unsigned char *mem2hex(const void *mem, char *buf, int count,
+ int may_fault);
+static const char *hex2mem(const char *buf, void *_mem, int count,
+ int may_fault);
+
+/*
+ * Convert ch from a hex digit to an int
+ */
+static int hex(unsigned char ch)
+{
+ if (ch >= 'a' && ch <= 'f')
+ return ch - 'a' + 10;
+ if (ch >= '0' && ch <= '9')
+ return ch - '0';
+ if (ch >= 'A' && ch <= 'F')
+ return ch - 'A' + 10;
+ return -1;
+}
+
+#ifdef CONFIG_GDBSTUB_DEBUGGING
+
+void debug_to_serial(const char *p, int n)
+{
+ __debug_to_serial(p, n);
+ /* gdbstub_console_write(NULL, p, n); */
+}
+
+void gdbstub_printk(const char *fmt, ...)
+{
+ va_list args;
+ int len;
+
+ /* Emit the output into the temporary buffer */
+ va_start(args, fmt);
+ len = vsnprintf(trans_buffer, sizeof(trans_buffer), fmt, args);
+ va_end(args);
+ debug_to_serial(trans_buffer, len);
+}
+
+#endif
+
+static inline char *gdbstub_strcpy(char *dst, const char *src)
+{
+ int loop = 0;
+ while ((dst[loop] = src[loop]))
+ loop++;
+ return dst;
+}
+
+/*
+ * scan for the sequence $<data>#<checksum>
+ */
+static void getpacket(char *buffer)
+{
+ unsigned char checksum;
+ unsigned char xmitcsum;
+ unsigned char ch;
+ int count, i, ret, error;
+
+ for (;;) {
+ /*
+ * wait around for the start character,
+ * ignore all other characters
+ */
+ do {
+ gdbstub_io_rx_char(&ch, 0);
+ } while (ch != '$');
+
+ checksum = 0;
+ xmitcsum = -1;
+ count = 0;
+ error = 0;
+
+ /*
+ * now, read until a # or end of buffer is found
+ */
+ while (count < BUFMAX) {
+ ret = gdbstub_io_rx_char(&ch, 0);
+ if (ret < 0)
+ error = ret;
+
+ if (ch == '#')
+ break;
+ checksum += ch;
+ buffer[count] = ch;
+ count++;
+ }
+
+ if (error == -EIO) {
+ gdbstub_proto("### GDB Rx Error - Skipping packet"
+ " ###\n");
+ gdbstub_proto("### GDB Tx NAK\n");
+ gdbstub_io_tx_char('-');
+ continue;
+ }
+
+ if (count >= BUFMAX || error)
+ continue;
+
+ buffer[count] = 0;
+
+ /* read the checksum */
+ ret = gdbstub_io_rx_char(&ch, 0);
+ if (ret < 0)
+ error = ret;
+ xmitcsum = hex(ch) << 4;
+
+ ret = gdbstub_io_rx_char(&ch, 0);
+ if (ret < 0)
+ error = ret;
+ xmitcsum |= hex(ch);
+
+ if (error) {
+ if (error == -EIO)
+ gdbstub_io("### GDB Rx Error -"
+ " Skipping packet\n");
+ gdbstub_io("### GDB Tx NAK\n");
+ gdbstub_io_tx_char('-');
+ continue;
+ }
+
+ /* check the checksum */
+ if (checksum != xmitcsum) {
+ gdbstub_io("### GDB Tx NAK\n");
+ gdbstub_io_tx_char('-'); /* failed checksum */
+ continue;
+ }
+
+ gdbstub_proto("### GDB Rx '$%s#%02x' ###\n", buffer, checksum);
+ gdbstub_io("### GDB Tx ACK\n");
+ gdbstub_io_tx_char('+'); /* successful transfer */
+
+ /*
+ * if a sequence char is present,
+ * reply the sequence ID
+ */
+ if (buffer[2] == ':') {
+ gdbstub_io_tx_char(buffer[0]);
+ gdbstub_io_tx_char(buffer[1]);
+
+ /*
+ * remove sequence chars from buffer
+ */
+ count = 0;
+ while (buffer[count])
+ count++;
+ for (i = 3; i <= count; i++)
+ buffer[i - 3] = buffer[i];
+ }
+
+ break;
+ }
+}
+
+/*
+ * send the packet in buffer.
+ * - return 0 if successfully ACK'd
+ * - return 1 if abandoned due to new incoming packet
+ */
+static int putpacket(char *buffer)
+{
+ unsigned char checksum;
+ unsigned char ch;
+ int count;
+
+ /*
+ * $<packet info>#<checksum>.
+ */
+ gdbstub_proto("### GDB Tx $'%s'#?? ###\n", buffer);
+
+ do {
+ gdbstub_io_tx_char('$');
+ checksum = 0;
+ count = 0;
+
+ while ((ch = buffer[count]) != 0) {
+ gdbstub_io_tx_char(ch);
+ checksum += ch;
+ count += 1;
+ }
+
+ gdbstub_io_tx_char('#');
+ gdbstub_io_tx_char(hexchars[checksum >> 4]);
+ gdbstub_io_tx_char(hexchars[checksum & 0xf]);
+
+ } while (gdbstub_io_rx_char(&ch, 0),
+ ch == '-' && (gdbstub_io("### GDB Rx NAK\n"), 0),
+ ch != '-' && ch != '+' &&
+ (gdbstub_io("### GDB Rx ??? %02x\n", ch), 0),
+ ch != '+' && ch != '$');
+
+ if (ch == '+') {
+ gdbstub_io("### GDB Rx ACK\n");
+ return 0;
+ }
+
+ gdbstub_io("### GDB Tx Abandoned\n");
+ gdbstub_rx_unget = ch;
+ return 1;
+}
+
+/*
+ * While we find nice hex chars, build an int.
+ * Return number of chars processed.
+ */
+static int hexToInt(char **ptr, int *intValue)
+{
+ int numChars = 0;
+ int hexValue;
+
+ *intValue = 0;
+
+ while (**ptr) {
+ hexValue = hex(**ptr);
+ if (hexValue < 0)
+ break;
+
+ *intValue = (*intValue << 4) | hexValue;
+ numChars++;
+
+ (*ptr)++;
+ }
+
+ return (numChars);
+}
+
+/*
+ * We single-step by setting breakpoints. When an exception
+ * is handled, we need to restore the instructions hoisted
+ * when the breakpoints were set.
+ *
+ * This is where we save the original instructions.
+ */
+static struct gdb_bp_save {
+ u8 *addr;
+ u8 opcode[2];
+} step_bp[2];
+
+static const unsigned char gdbstub_insn_sizes[256] =
+{
+ /* 1 2 3 4 5 6 7 8 9 a b c d e f */
+ 1, 3, 3, 3, 1, 3, 3, 3, 1, 3, 3, 3, 1, 3, 3, 3, /* 0 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 1 */
+ 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, /* 2 */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, /* 3 */
+ 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, /* 4 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, /* 5 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 7 */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* 8 */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* 9 */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* a */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* b */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 2, /* c */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* d */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* e */
+ 0, 2, 2, 2, 2, 2, 2, 4, 0, 3, 0, 4, 0, 6, 7, 1 /* f */
+};
+
+static int __gdbstub_mark_bp(u8 *addr, int ix)
+{
+ if (addr < (u8 *) 0x70000000UL)
+ return 0;
+ /* 70000000-7fffffff: vmalloc area */
+ if (addr < (u8 *) 0x80000000UL)
+ goto okay;
+ if (addr < (u8 *) 0x8c000000UL)
+ return 0;
+ /* 8c000000-93ffffff: SRAM, SDRAM */
+ if (addr < (u8 *) 0x94000000UL)
+ goto okay;
+ return 0;
+
+okay:
+ if (gdbstub_read_byte(addr + 0, &step_bp[ix].opcode[0]) < 0 ||
+ gdbstub_read_byte(addr + 1, &step_bp[ix].opcode[1]) < 0)
+ return 0;
+
+ step_bp[ix].addr = addr;
+ return 1;
+}
+
+static inline void __gdbstub_restore_bp(void)
+{
+#ifdef GDBSTUB_USE_F7F7_AS_BREAKPOINT
+ if (step_bp[0].addr) {
+ gdbstub_write_byte(step_bp[0].opcode[0], step_bp[0].addr + 0);
+ gdbstub_write_byte(step_bp[0].opcode[1], step_bp[0].addr + 1);
+ }
+ if (step_bp[1].addr) {
+ gdbstub_write_byte(step_bp[1].opcode[0], step_bp[1].addr + 0);
+ gdbstub_write_byte(step_bp[1].opcode[1], step_bp[1].addr + 1);
+ }
+#else
+ if (step_bp[0].addr)
+ gdbstub_write_byte(step_bp[0].opcode[0], step_bp[0].addr + 0);
+ if (step_bp[1].addr)
+ gdbstub_write_byte(step_bp[1].opcode[0], step_bp[1].addr + 0);
+#endif
+
+ gdbstub_flush_caches = 1;
+
+ step_bp[0].addr = NULL;
+ step_bp[0].opcode[0] = 0;
+ step_bp[0].opcode[1] = 0;
+ step_bp[1].addr = NULL;
+ step_bp[1].opcode[0] = 0;
+ step_bp[1].opcode[1] = 0;
+}
+
+/*
+ * emulate single stepping by means of breakpoint instructions
+ */
+static int gdbstub_single_step(struct pt_regs *regs)
+{
+ unsigned size;
+ uint32_t x;
+ uint8_t cur, *pc, *sp;
+
+ step_bp[0].addr = NULL;
+ step_bp[0].opcode[0] = 0;
+ step_bp[0].opcode[1] = 0;
+ step_bp[1].addr = NULL;
+ step_bp[1].opcode[0] = 0;
+ step_bp[1].opcode[1] = 0;
+ x = 0;
+
+ pc = (u8 *) regs->pc;
+ sp = (u8 *) (regs + 1);
+ if (gdbstub_read_byte(pc, &cur) < 0)
+ return -EFAULT;
+
+ gdbstub_bkpt("Single Step from %p { %02x }\n", pc, cur);
+
+ gdbstub_flush_caches = 1;
+
+ size = gdbstub_insn_sizes[cur];
+ if (size > 0) {
+ if (!__gdbstub_mark_bp(pc + size, 0))
+ goto fault;
+ } else {
+ switch (cur) {
+ /* Bxx (d8,PC) */
+ case 0xc0:
+ case 0xc1:
+ case 0xc2:
+ case 0xc3:
+ case 0xc4:
+ case 0xc5:
+ case 0xc6:
+ case 0xc7:
+ case 0xc8:
+ case 0xc9:
+ case 0xca:
+ if (gdbstub_read_byte(pc + 1, (u8 *) &x) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp(pc + 2, 0))
+ goto fault;
+ if ((x < 0 || x > 2) &&
+ !__gdbstub_mark_bp(pc + (s8) x, 1))
+ goto fault;
+ break;
+
+ /* LXX (d8,PC) */
+ case 0xd0:
+ case 0xd1:
+ case 0xd2:
+ case 0xd3:
+ case 0xd4:
+ case 0xd5:
+ case 0xd6:
+ case 0xd7:
+ case 0xd8:
+ case 0xd9:
+ case 0xda:
+ if (!__gdbstub_mark_bp(pc + 1, 0))
+ goto fault;
+ if (regs->pc != regs->lar &&
+ !__gdbstub_mark_bp((u8 *) regs->lar, 1))
+ goto fault;
+ break;
+
+ /* SETLB - loads the next for bytes into the LIR
+ * register */
+ case 0xdb:
+ if (!__gdbstub_mark_bp(pc + 1, 0))
+ goto fault;
+ break;
+
+ /* JMP (d16,PC) or CALL (d16,PC) */
+ case 0xcc:
+ case 0xcd:
+ if (gdbstub_read_byte(pc + 1, ((u8 *) &x) + 0) < 0 ||
+ gdbstub_read_byte(pc + 2, ((u8 *) &x) + 1) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp(pc + (s16) x, 0))
+ goto fault;
+ break;
+
+ /* JMP (d32,PC) or CALL (d32,PC) */
+ case 0xdc:
+ case 0xdd:
+ if (gdbstub_read_byte(pc + 1, ((u8 *) &x) + 0) < 0 ||
+ gdbstub_read_byte(pc + 2, ((u8 *) &x) + 1) < 0 ||
+ gdbstub_read_byte(pc + 3, ((u8 *) &x) + 2) < 0 ||
+ gdbstub_read_byte(pc + 4, ((u8 *) &x) + 3) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp(pc + (s32) x, 0))
+ goto fault;
+ break;
+
+ /* RETF */
+ case 0xde:
+ if (!__gdbstub_mark_bp((u8 *) regs->mdr, 0))
+ goto fault;
+ break;
+
+ /* RET */
+ case 0xdf:
+ if (gdbstub_read_byte(pc + 2, (u8 *) &x) < 0)
+ goto fault;
+ sp += (s8)x;
+ if (gdbstub_read_byte(sp + 0, ((u8 *) &x) + 0) < 0 ||
+ gdbstub_read_byte(sp + 1, ((u8 *) &x) + 1) < 0 ||
+ gdbstub_read_byte(sp + 2, ((u8 *) &x) + 2) < 0 ||
+ gdbstub_read_byte(sp + 3, ((u8 *) &x) + 3) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp((u8 *) x, 0))
+ goto fault;
+ break;
+
+ case 0xf0:
+ if (gdbstub_read_byte(pc + 1, &cur) < 0)
+ goto fault;
+
+ if (cur >= 0xf0 && cur <= 0xf7) {
+ /* JMP (An) / CALLS (An) */
+ switch (cur & 3) {
+ case 0: x = regs->a0; break;
+ case 1: x = regs->a1; break;
+ case 2: x = regs->a2; break;
+ case 3: x = regs->a3; break;
+ }
+ if (!__gdbstub_mark_bp((u8 *) x, 0))
+ goto fault;
+ } else if (cur == 0xfc) {
+ /* RETS */
+ if (gdbstub_read_byte(
+ sp + 0, ((u8 *) &x) + 0) < 0 ||
+ gdbstub_read_byte(
+ sp + 1, ((u8 *) &x) + 1) < 0 ||
+ gdbstub_read_byte(
+ sp + 2, ((u8 *) &x) + 2) < 0 ||
+ gdbstub_read_byte(
+ sp + 3, ((u8 *) &x) + 3) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp((u8 *) x, 0))
+ goto fault;
+ } else if (cur == 0xfd) {
+ /* RTI */
+ if (gdbstub_read_byte(
+ sp + 4, ((u8 *) &x) + 0) < 0 ||
+ gdbstub_read_byte(
+ sp + 5, ((u8 *) &x) + 1) < 0 ||
+ gdbstub_read_byte(
+ sp + 6, ((u8 *) &x) + 2) < 0 ||
+ gdbstub_read_byte(
+ sp + 7, ((u8 *) &x) + 3) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp((u8 *) x, 0))
+ goto fault;
+ } else {
+ if (!__gdbstub_mark_bp(pc + 2, 0))
+ goto fault;
+ }
+
+ break;
+
+ /* potential 3-byte conditional branches */
+ case 0xf8:
+ if (gdbstub_read_byte(pc + 1, &cur) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp(pc + 3, 0))
+ goto fault;
+
+ if (cur >= 0xe8 && cur <= 0xeb) {
+ if (gdbstub_read_byte(
+ pc + 2, ((u8 *) &x) + 0) < 0)
+ goto fault;
+ if ((x < 0 || x > 3) &&
+ !__gdbstub_mark_bp(pc + (s8) x, 1))
+ goto fault;
+ }
+ break;
+
+ case 0xfa:
+ if (gdbstub_read_byte(pc + 1, &cur) < 0)
+ goto fault;
+
+ if (cur == 0xff) {
+ /* CALLS (d16,PC) */
+ if (gdbstub_read_byte(
+ pc + 2, ((u8 *) &x) + 0) < 0 ||
+ gdbstub_read_byte(
+ pc + 3, ((u8 *) &x) + 1) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp(pc + (s16) x, 0))
+ goto fault;
+ } else {
+ if (!__gdbstub_mark_bp(pc + 4, 0))
+ goto fault;
+ }
+ break;
+
+ case 0xfc:
+ if (gdbstub_read_byte(pc + 1, &cur) < 0)
+ goto fault;
+ if (cur == 0xff) {
+ /* CALLS (d32,PC) */
+ if (gdbstub_read_byte(
+ pc + 2, ((u8 *) &x) + 0) < 0 ||
+ gdbstub_read_byte(
+ pc + 3, ((u8 *) &x) + 1) < 0 ||
+ gdbstub_read_byte(
+ pc + 4, ((u8 *) &x) + 2) < 0 ||
+ gdbstub_read_byte(
+ pc + 5, ((u8 *) &x) + 3) < 0)
+ goto fault;
+ if (!__gdbstub_mark_bp(
+ pc + (s32) x, 0))
+ goto fault;
+ } else {
+ if (!__gdbstub_mark_bp(
+ pc + 6, 0))
+ goto fault;
+ }
+ break;
+
+ }
+ }
+
+ gdbstub_bkpt("Step: %02x at %p; %02x at %p\n",
+ step_bp[0].opcode[0], step_bp[0].addr,
+ step_bp[1].opcode[0], step_bp[1].addr);
+
+ if (step_bp[0].addr) {
+#ifdef GDBSTUB_USE_F7F7_AS_BREAKPOINT
+ if (gdbstub_write_byte(0xF7, step_bp[0].addr + 0) < 0 ||
+ gdbstub_write_byte(0xF7, step_bp[0].addr + 1) < 0)
+ goto fault;
+#else
+ if (gdbstub_write_byte(0xFF, step_bp[0].addr + 0) < 0)
+ goto fault;
+#endif
+ }
+
+ if (step_bp[1].addr) {
+#ifdef GDBSTUB_USE_F7F7_AS_BREAKPOINT
+ if (gdbstub_write_byte(0xF7, step_bp[1].addr + 0) < 0 ||
+ gdbstub_write_byte(0xF7, step_bp[1].addr + 1) < 0)
+ goto fault;
+#else
+ if (gdbstub_write_byte(0xFF, step_bp[1].addr + 0) < 0)
+ goto fault;
+#endif
+ }
+
+ return 0;
+
+ fault:
+ /* uh-oh - silly address alert, try and restore things */
+ __gdbstub_restore_bp();
+ return -EFAULT;
+}
+
+#ifdef CONFIG_GDBSTUB_CONSOLE
+
+void gdbstub_console_write(struct console *con, const char *p, unsigned n)
+{
+ static const char gdbstub_cr[] = { 0x0d };
+ char outbuf[26];
+ int qty;
+ u8 busy;
+
+ busy = gdbstub_busy;
+ gdbstub_busy = 1;
+
+ outbuf[0] = 'O';
+
+ while (n > 0) {
+ qty = 1;
+
+ while (n > 0 && qty < 20) {
+ mem2hex(p, outbuf + qty, 2, 0);
+ qty += 2;
+ if (*p == 0x0a) {
+ mem2hex(gdbstub_cr, outbuf + qty, 2, 0);
+ qty += 2;
+ }
+ p++;
+ n--;
+ }
+
+ outbuf[qty] = 0;
+ putpacket(outbuf);
+ }
+
+ gdbstub_busy = busy;
+}
+
+static kdev_t gdbstub_console_dev(struct console *con)
+{
+ return MKDEV(1, 3); /* /dev/null */
+}
+
+static struct console gdbstub_console = {
+ .name = "gdb",
+ .write = gdbstub_console_write,
+ .device = gdbstub_console_dev,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+#endif
+
+/*
+ * Convert the memory pointed to by mem into hex, placing result in buf.
+ * - if successful, return a pointer to the last char put in buf (NUL)
+ * - in case of mem fault, return NULL
+ * may_fault is non-zero if we are reading from arbitrary memory, but is
+ * currently not used.
+ */
+static
+unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault)
+{
+ const u8 *mem = _mem;
+ u8 ch[4];
+
+ if ((u32) mem & 1 && count >= 1) {
+ if (gdbstub_read_byte(mem, ch) != 0)
+ return 0;
+ *buf++ = hexchars[ch[0] >> 4];
+ *buf++ = hexchars[ch[0] & 0xf];
+ mem++;
+ count--;
+ }
+
+ if ((u32) mem & 3 && count >= 2) {
+ if (gdbstub_read_word(mem, ch) != 0)
+ return 0;
+ *buf++ = hexchars[ch[0] >> 4];
+ *buf++ = hexchars[ch[0] & 0xf];
+ *buf++ = hexchars[ch[1] >> 4];
+ *buf++ = hexchars[ch[1] & 0xf];
+ mem += 2;
+ count -= 2;
+ }
+
+ while (count >= 4) {
+ if (gdbstub_read_dword(mem, ch) != 0)
+ return 0;
+ *buf++ = hexchars[ch[0] >> 4];
+ *buf++ = hexchars[ch[0] & 0xf];
+ *buf++ = hexchars[ch[1] >> 4];
+ *buf++ = hexchars[ch[1] & 0xf];
+ *buf++ = hexchars[ch[2] >> 4];
+ *buf++ = hexchars[ch[2] & 0xf];
+ *buf++ = hexchars[ch[3] >> 4];
+ *buf++ = hexchars[ch[3] & 0xf];
+ mem += 4;
+ count -= 4;
+ }
+
+ if (count >= 2) {
+ if (gdbstub_read_word(mem, ch) != 0)
+ return 0;
+ *buf++ = hexchars[ch[0] >> 4];
+ *buf++ = hexchars[ch[0] & 0xf];
+ *buf++ = hexchars[ch[1] >> 4];
+ *buf++ = hexchars[ch[1] & 0xf];
+ mem += 2;
+ count -= 2;
+ }
+
+ if (count >= 1) {
+ if (gdbstub_read_byte(mem, ch) != 0)
+ return 0;
+ *buf++ = hexchars[ch[0] >> 4];
+ *buf++ = hexchars[ch[0] & 0xf];
+ }
+
+ *buf = 0;
+ return buf;
+}
+
+/*
+ * convert the hex array pointed to by buf into binary to be placed in mem
+ * return a pointer to the character AFTER the last byte written
+ * may_fault is non-zero if we are reading from arbitrary memory, but is
+ * currently not used.
+ */
+static
+const char *hex2mem(const char *buf, void *_mem, int count, int may_fault)
+{
+ u8 *mem = _mem;
+ union {
+ u32 val;
+ u8 b[4];
+ } ch;
+
+ if ((u32) mem & 1 && count >= 1) {
+ ch.b[0] = hex(*buf++) << 4;
+ ch.b[0] |= hex(*buf++);
+ if (gdbstub_write_byte(ch.val, mem) != 0)
+ return 0;
+ mem++;
+ count--;
+ }
+
+ if ((u32) mem & 3 && count >= 2) {
+ ch.b[0] = hex(*buf++) << 4;
+ ch.b[0] |= hex(*buf++);
+ ch.b[1] = hex(*buf++) << 4;
+ ch.b[1] |= hex(*buf++);
+ if (gdbstub_write_word(ch.val, mem) != 0)
+ return 0;
+ mem += 2;
+ count -= 2;
+ }
+
+ while (count >= 4) {
+ ch.b[0] = hex(*buf++) << 4;
+ ch.b[0] |= hex(*buf++);
+ ch.b[1] = hex(*buf++) << 4;
+ ch.b[1] |= hex(*buf++);
+ ch.b[2] = hex(*buf++) << 4;
+ ch.b[2] |= hex(*buf++);
+ ch.b[3] = hex(*buf++) << 4;
+ ch.b[3] |= hex(*buf++);
+ if (gdbstub_write_dword(ch.val, mem) != 0)
+ return 0;
+ mem += 4;
+ count -= 4;
+ }
+
+ if (count >= 2) {
+ ch.b[0] = hex(*buf++) << 4;
+ ch.b[0] |= hex(*buf++);
+ ch.b[1] = hex(*buf++) << 4;
+ ch.b[1] |= hex(*buf++);
+ if (gdbstub_write_word(ch.val, mem) != 0)
+ return 0;
+ mem += 2;
+ count -= 2;
+ }
+
+ if (count >= 1) {
+ ch.b[0] = hex(*buf++) << 4;
+ ch.b[0] |= hex(*buf++);
+ if (gdbstub_write_byte(ch.val, mem) != 0)
+ return 0;
+ }
+
+ return buf;
+}
+
+/*
+ * This table contains the mapping between MN10300 exception codes, and
+ * signals, which are primarily what GDB understands. It also indicates
+ * which hardware traps we need to commandeer when initializing the stub.
+ */
+static const struct excep_to_sig_map {
+ enum exception_code excep; /* MN10300 exception code */
+ unsigned char signo; /* Signal that we map this into */
+} excep_to_sig_map[] = {
+ { EXCEP_ITLBMISS, SIGSEGV },
+ { EXCEP_DTLBMISS, SIGSEGV },
+ { EXCEP_TRAP, SIGTRAP },
+ { EXCEP_ISTEP, SIGTRAP },
+ { EXCEP_IBREAK, SIGTRAP },
+ { EXCEP_OBREAK, SIGTRAP },
+ { EXCEP_UNIMPINS, SIGILL },
+ { EXCEP_UNIMPEXINS, SIGILL },
+ { EXCEP_MEMERR, SIGSEGV },
+ { EXCEP_MISALIGN, SIGSEGV },
+ { EXCEP_BUSERROR, SIGBUS },
+ { EXCEP_ILLINSACC, SIGSEGV },
+ { EXCEP_ILLDATACC, SIGSEGV },
+ { EXCEP_IOINSACC, SIGSEGV },
+ { EXCEP_PRIVINSACC, SIGSEGV },
+ { EXCEP_PRIVDATACC, SIGSEGV },
+ { EXCEP_FPU_DISABLED, SIGFPE },
+ { EXCEP_FPU_UNIMPINS, SIGFPE },
+ { EXCEP_FPU_OPERATION, SIGFPE },
+ { EXCEP_WDT, SIGALRM },
+ { EXCEP_NMI, SIGQUIT },
+ { EXCEP_IRQ_LEVEL0, SIGINT },
+ { EXCEP_IRQ_LEVEL1, SIGINT },
+ { EXCEP_IRQ_LEVEL2, SIGINT },
+ { EXCEP_IRQ_LEVEL3, SIGINT },
+ { EXCEP_IRQ_LEVEL4, SIGINT },
+ { EXCEP_IRQ_LEVEL5, SIGINT },
+ { EXCEP_IRQ_LEVEL6, SIGINT },
+ { 0, 0}
+};
+
+/*
+ * convert the MN10300 exception code into a UNIX signal number
+ */
+static int computeSignal(enum exception_code excep)
+{
+ const struct excep_to_sig_map *map;
+
+ for (map = excep_to_sig_map; map->signo; map++)
+ if (map->excep == excep)
+ return map->signo;
+
+ return SIGHUP; /* default for things we don't know about */
+}
+
+static u32 gdbstub_fpcr, gdbstub_fpufs_array[32];
+
+/*
+ *
+ */
+static void gdbstub_store_fpu(void)
+{
+#ifdef CONFIG_FPU
+
+ asm volatile(
+ "or %2,epsw\n"
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ "nop\n"
+ "nop\n"
+#endif
+ "mov %1, a1\n"
+ "fmov fs0, (a1+)\n"
+ "fmov fs1, (a1+)\n"
+ "fmov fs2, (a1+)\n"
+ "fmov fs3, (a1+)\n"
+ "fmov fs4, (a1+)\n"
+ "fmov fs5, (a1+)\n"
+ "fmov fs6, (a1+)\n"
+ "fmov fs7, (a1+)\n"
+ "fmov fs8, (a1+)\n"
+ "fmov fs9, (a1+)\n"
+ "fmov fs10, (a1+)\n"
+ "fmov fs11, (a1+)\n"
+ "fmov fs12, (a1+)\n"
+ "fmov fs13, (a1+)\n"
+ "fmov fs14, (a1+)\n"
+ "fmov fs15, (a1+)\n"
+ "fmov fs16, (a1+)\n"
+ "fmov fs17, (a1+)\n"
+ "fmov fs18, (a1+)\n"
+ "fmov fs19, (a1+)\n"
+ "fmov fs20, (a1+)\n"
+ "fmov fs21, (a1+)\n"
+ "fmov fs22, (a1+)\n"
+ "fmov fs23, (a1+)\n"
+ "fmov fs24, (a1+)\n"
+ "fmov fs25, (a1+)\n"
+ "fmov fs26, (a1+)\n"
+ "fmov fs27, (a1+)\n"
+ "fmov fs28, (a1+)\n"
+ "fmov fs29, (a1+)\n"
+ "fmov fs30, (a1+)\n"
+ "fmov fs31, (a1+)\n"
+ "fmov fpcr, %0\n"
+ : "=d"(gdbstub_fpcr)
+ : "g" (&gdbstub_fpufs_array), "i"(EPSW_FE)
+ : "a1"
+ );
+#endif
+}
+
+/*
+ *
+ */
+static void gdbstub_load_fpu(void)
+{
+#ifdef CONFIG_FPU
+
+ asm volatile(
+ "or %1,epsw\n"
+#ifdef CONFIG_MN10300_PROC_MN103E010
+ "nop\n"
+ "nop\n"
+#endif
+ "mov %0, a1\n"
+ "fmov (a1+), fs0\n"
+ "fmov (a1+), fs1\n"
+ "fmov (a1+), fs2\n"
+ "fmov (a1+), fs3\n"
+ "fmov (a1+), fs4\n"
+ "fmov (a1+), fs5\n"
+ "fmov (a1+), fs6\n"
+ "fmov (a1+), fs7\n"
+ "fmov (a1+), fs8\n"
+ "fmov (a1+), fs9\n"
+ "fmov (a1+), fs10\n"
+ "fmov (a1+), fs11\n"
+ "fmov (a1+), fs12\n"
+ "fmov (a1+), fs13\n"
+ "fmov (a1+), fs14\n"
+ "fmov (a1+), fs15\n"
+ "fmov (a1+), fs16\n"
+ "fmov (a1+), fs17\n"
+ "fmov (a1+), fs18\n"
+ "fmov (a1+), fs19\n"
+ "fmov (a1+), fs20\n"
+ "fmov (a1+), fs21\n"
+ "fmov (a1+), fs22\n"
+ "fmov (a1+), fs23\n"
+ "fmov (a1+), fs24\n"
+ "fmov (a1+), fs25\n"
+ "fmov (a1+), fs26\n"
+ "fmov (a1+), fs27\n"
+ "fmov (a1+), fs28\n"
+ "fmov (a1+), fs29\n"
+ "fmov (a1+), fs30\n"
+ "fmov (a1+), fs31\n"
+ "fmov %2, fpcr\n"
+ :
+ : "g" (&gdbstub_fpufs_array), "i"(EPSW_FE), "d"(gdbstub_fpcr)
+ : "a1"
+ );
+#endif
+}
+
+/*
+ * set a software breakpoint
+ */
+int gdbstub_set_breakpoint(u8 *addr, int len)
+{
+ int bkpt, loop, xloop;
+
+#ifdef GDBSTUB_USE_F7F7_AS_BREAKPOINT
+ len = (len + 1) & ~1;
+#endif
+
+ gdbstub_bkpt("setbkpt(%p,%d)\n", addr, len);
+
+ for (bkpt = 255; bkpt >= 0; bkpt--)
+ if (!gdbstub_bkpts[bkpt].addr)
+ break;
+ if (bkpt < 0)
+ return -ENOSPC;
+
+ for (loop = 0; loop < len; loop++)
+ if (gdbstub_read_byte(&addr[loop],
+ &gdbstub_bkpts[bkpt].origbytes[loop]
+ ) < 0)
+ return -EFAULT;
+
+ gdbstub_flush_caches = 1;
+
+#ifdef GDBSTUB_USE_F7F7_AS_BREAKPOINT
+ for (loop = 0; loop < len; loop++)
+ if (gdbstub_write_byte(0xF7, &addr[loop]) < 0)
+ goto restore;
+#else
+ for (loop = 0; loop < len; loop++)
+ if (gdbstub_write_byte(0xFF, &addr[loop]) < 0)
+ goto restore;
+#endif
+
+ gdbstub_bkpts[bkpt].addr = addr;
+ gdbstub_bkpts[bkpt].len = len;
+
+ gdbstub_bkpt("Set BKPT[%02x]: %p-%p {%02x%02x%02x%02x%02x%02x%02x}\n",
+ bkpt,
+ gdbstub_bkpts[bkpt].addr,
+ gdbstub_bkpts[bkpt].addr + gdbstub_bkpts[bkpt].len - 1,
+ gdbstub_bkpts[bkpt].origbytes[0],
+ gdbstub_bkpts[bkpt].origbytes[1],
+ gdbstub_bkpts[bkpt].origbytes[2],
+ gdbstub_bkpts[bkpt].origbytes[3],
+ gdbstub_bkpts[bkpt].origbytes[4],
+ gdbstub_bkpts[bkpt].origbytes[5],
+ gdbstub_bkpts[bkpt].origbytes[6]
+ );
+
+ return 0;
+
+restore:
+ for (xloop = 0; xloop < loop; xloop++)
+ gdbstub_write_byte(gdbstub_bkpts[bkpt].origbytes[xloop],
+ addr + xloop);
+ return -EFAULT;
+}
+
+/*
+ * clear a software breakpoint
+ */
+int gdbstub_clear_breakpoint(u8 *addr, int len)
+{
+ int bkpt, loop;
+
+#ifdef GDBSTUB_USE_F7F7_AS_BREAKPOINT
+ len = (len + 1) & ~1;
+#endif
+
+ gdbstub_bkpt("clearbkpt(%p,%d)\n", addr, len);
+
+ for (bkpt = 255; bkpt >= 0; bkpt--)
+ if (gdbstub_bkpts[bkpt].addr == addr &&
+ gdbstub_bkpts[bkpt].len == len)
+ break;
+ if (bkpt < 0)
+ return -ENOENT;
+
+ gdbstub_bkpts[bkpt].addr = NULL;
+
+ gdbstub_flush_caches = 1;
+
+ for (loop = 0; loop < len; loop++)
+ if (gdbstub_write_byte(gdbstub_bkpts[bkpt].origbytes[loop],
+ addr + loop) < 0)
+ return -EFAULT;
+
+ return 0;
+}
+
+/*
+ * This function does all command processing for interfacing to gdb
+ * - returns 1 if the exception should be skipped, 0 otherwise.
+ */
+static int gdbstub(struct pt_regs *regs, enum exception_code excep)
+{
+ unsigned long *stack;
+ unsigned long epsw, mdr;
+ uint32_t zero, ssp;
+ uint8_t broke;
+ char *ptr;
+ int sigval;
+ int addr;
+ int length;
+ int loop;
+
+ if (excep == EXCEP_FPU_DISABLED)
+ return 0;
+
+ gdbstub_flush_caches = 0;
+
+ mn10300_set_gdbleds(1);
+
+ asm volatile("mov mdr,%0" : "=d"(mdr));
+ asm volatile("mov epsw,%0" : "=d"(epsw));
+ asm volatile("mov %0,epsw"
+ :: "d"((epsw & ~EPSW_IM) | EPSW_IE | EPSW_IM_1));
+
+ gdbstub_store_fpu();
+
+#ifdef CONFIG_GDBSTUB_IMMEDIATE
+ /* skip the initial pause loop */
+ if (regs->pc == (unsigned long) __gdbstub_pause)
+ regs->pc = (unsigned long) start_kernel;
+#endif
+
+ /* if we were single stepping, restore the opcodes hoisted for the
+ * breakpoint[s] */
+ broke = 0;
+ if ((step_bp[0].addr && step_bp[0].addr == (u8 *) regs->pc) ||
+ (step_bp[1].addr && step_bp[1].addr == (u8 *) regs->pc))
+ broke = 1;
+
+ __gdbstub_restore_bp();
+
+ if (gdbstub_rx_unget) {
+ sigval = SIGINT;
+ if (gdbstub_rx_unget != 3)
+ goto packet_waiting;
+ gdbstub_rx_unget = 0;
+ }
+
+ stack = (unsigned long *) regs->sp;
+ sigval = broke ? SIGTRAP : computeSignal(excep);
+
+ /* send information about a BUG() */
+ if (!user_mode(regs) && excep == EXCEP_SYSCALL15) {
+ const struct bug_entry *bug;
+
+ bug = find_bug(regs->pc);
+ if (bug)
+ goto found_bug;
+ length = snprintf(trans_buffer, sizeof(trans_buffer),
+ "BUG() at address %lx\n", regs->pc);
+ goto send_bug_pkt;
+
+ found_bug:
+ length = snprintf(trans_buffer, sizeof(trans_buffer),
+ "BUG() at address %lx (%s:%d)\n",
+ regs->pc, bug->file, bug->line);
+
+ send_bug_pkt:
+ ptr = output_buffer;
+ *ptr++ = 'O';
+ ptr = mem2hex(trans_buffer, ptr, length, 0);
+ *ptr = 0;
+ putpacket(output_buffer);
+
+ regs->pc -= 2;
+ sigval = SIGABRT;
+ } else if (regs->pc == (unsigned long) __gdbstub_bug_trap) {
+ regs->pc = regs->mdr;
+ sigval = SIGABRT;
+ }
+
+ /*
+ * send a message to the debugger's user saying what happened if it may
+ * not be clear cut (we can't map exceptions onto signals properly)
+ */
+ if (sigval != SIGINT && sigval != SIGTRAP && sigval != SIGILL) {
+ static const char title[] = "Excep ", tbcberr[] = "BCBERR ";
+ static const char crlf[] = "\r\n";
+ char hx;
+ u32 bcberr = BCBERR;
+
+ ptr = output_buffer;
+ *ptr++ = 'O';
+ ptr = mem2hex(title, ptr, sizeof(title) - 1, 0);
+
+ hx = hexchars[(excep & 0xf000) >> 12];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(excep & 0x0f00) >> 8];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(excep & 0x00f0) >> 4];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(excep & 0x000f)];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+
+ ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
+ *ptr = 0;
+ putpacket(output_buffer); /* send it off... */
+
+ /* BCBERR */
+ ptr = output_buffer;
+ *ptr++ = 'O';
+ ptr = mem2hex(tbcberr, ptr, sizeof(tbcberr) - 1, 0);
+
+ hx = hexchars[(bcberr & 0xf0000000) >> 28];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(bcberr & 0x0f000000) >> 24];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(bcberr & 0x00f00000) >> 20];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(bcberr & 0x000f0000) >> 16];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(bcberr & 0x0000f000) >> 12];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(bcberr & 0x00000f00) >> 8];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(bcberr & 0x000000f0) >> 4];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hexchars[(bcberr & 0x0000000f)];
+ *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+
+ ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
+ *ptr = 0;
+ putpacket(output_buffer); /* send it off... */
+ }
+
+ /*
+ * tell the debugger that an exception has occurred
+ */
+ ptr = output_buffer;
+
+ /*
+ * Send trap type (converted to signal)
+ */
+ *ptr++ = 'T';
+ *ptr++ = hexchars[sigval >> 4];
+ *ptr++ = hexchars[sigval & 0xf];
+
+ /*
+ * Send Error PC
+ */
+ *ptr++ = hexchars[GDB_REGID_PC >> 4];
+ *ptr++ = hexchars[GDB_REGID_PC & 0xf];
+ *ptr++ = ':';
+ ptr = mem2hex(®s->pc, ptr, 4, 0);
+ *ptr++ = ';';
+
+ /*
+ * Send frame pointer
+ */
+ *ptr++ = hexchars[GDB_REGID_FP >> 4];
+ *ptr++ = hexchars[GDB_REGID_FP & 0xf];
+ *ptr++ = ':';
+ ptr = mem2hex(®s->a3, ptr, 4, 0);
+ *ptr++ = ';';
+
+ /*
+ * Send stack pointer
+ */
+ ssp = (unsigned long) (regs + 1);
+ *ptr++ = hexchars[GDB_REGID_SP >> 4];
+ *ptr++ = hexchars[GDB_REGID_SP & 0xf];
+ *ptr++ = ':';
+ ptr = mem2hex(&ssp, ptr, 4, 0);
+ *ptr++ = ';';
+
+ *ptr++ = 0;
+ putpacket(output_buffer); /* send it off... */
+
+packet_waiting:
+ /*
+ * Wait for input from remote GDB
+ */
+ while (1) {
+ output_buffer[0] = 0;
+ getpacket(input_buffer);
+
+ switch (input_buffer[0]) {
+ /* request repeat of last signal number */
+ case '?':
+ output_buffer[0] = 'S';
+ output_buffer[1] = hexchars[sigval >> 4];
+ output_buffer[2] = hexchars[sigval & 0xf];
+ output_buffer[3] = 0;
+ break;
+
+ case 'd':
+ /* toggle debug flag */
+ break;
+
+ /*
+ * Return the value of the CPU registers
+ */
+ case 'g':
+ zero = 0;
+ ssp = (u32) (regs + 1);
+ ptr = output_buffer;
+ ptr = mem2hex(®s->d0, ptr, 4, 0);
+ ptr = mem2hex(®s->d1, ptr, 4, 0);
+ ptr = mem2hex(®s->d2, ptr, 4, 0);
+ ptr = mem2hex(®s->d3, ptr, 4, 0);
+ ptr = mem2hex(®s->a0, ptr, 4, 0);
+ ptr = mem2hex(®s->a1, ptr, 4, 0);
+ ptr = mem2hex(®s->a2, ptr, 4, 0);
+ ptr = mem2hex(®s->a3, ptr, 4, 0);
+
+ ptr = mem2hex(&ssp, ptr, 4, 0); /* 8 */
+ ptr = mem2hex(®s->pc, ptr, 4, 0);
+ ptr = mem2hex(®s->mdr, ptr, 4, 0);
+ ptr = mem2hex(®s->epsw, ptr, 4, 0);
+ ptr = mem2hex(®s->lir, ptr, 4, 0);
+ ptr = mem2hex(®s->lar, ptr, 4, 0);
+ ptr = mem2hex(®s->mdrq, ptr, 4, 0);
+
+ ptr = mem2hex(®s->e0, ptr, 4, 0); /* 15 */
+ ptr = mem2hex(®s->e1, ptr, 4, 0);
+ ptr = mem2hex(®s->e2, ptr, 4, 0);
+ ptr = mem2hex(®s->e3, ptr, 4, 0);
+ ptr = mem2hex(®s->e4, ptr, 4, 0);
+ ptr = mem2hex(®s->e5, ptr, 4, 0);
+ ptr = mem2hex(®s->e6, ptr, 4, 0);
+ ptr = mem2hex(®s->e7, ptr, 4, 0);
+
+ ptr = mem2hex(&ssp, ptr, 4, 0);
+ ptr = mem2hex(®s, ptr, 4, 0);
+ ptr = mem2hex(®s->sp, ptr, 4, 0);
+ ptr = mem2hex(®s->mcrh, ptr, 4, 0); /* 26 */
+ ptr = mem2hex(®s->mcrl, ptr, 4, 0);
+ ptr = mem2hex(®s->mcvf, ptr, 4, 0);
+
+ ptr = mem2hex(&gdbstub_fpcr, ptr, 4, 0); /* 29 - FPCR */
+ ptr = mem2hex(&zero, ptr, 4, 0);
+ ptr = mem2hex(&zero, ptr, 4, 0);
+ for (loop = 0; loop < 32; loop++)
+ ptr = mem2hex(&gdbstub_fpufs_array[loop],
+ ptr, 4, 0); /* 32 - FS0-31 */
+
+ break;
+
+ /*
+ * set the value of the CPU registers - return OK
+ */
+ case 'G':
+ {
+ const char *ptr;
+
+ ptr = &input_buffer[1];
+ ptr = hex2mem(ptr, ®s->d0, 4, 0);
+ ptr = hex2mem(ptr, ®s->d1, 4, 0);
+ ptr = hex2mem(ptr, ®s->d2, 4, 0);
+ ptr = hex2mem(ptr, ®s->d3, 4, 0);
+ ptr = hex2mem(ptr, ®s->a0, 4, 0);
+ ptr = hex2mem(ptr, ®s->a1, 4, 0);
+ ptr = hex2mem(ptr, ®s->a2, 4, 0);
+ ptr = hex2mem(ptr, ®s->a3, 4, 0);
+
+ ptr = hex2mem(ptr, &ssp, 4, 0); /* 8 */
+ ptr = hex2mem(ptr, ®s->pc, 4, 0);
+ ptr = hex2mem(ptr, ®s->mdr, 4, 0);
+ ptr = hex2mem(ptr, ®s->epsw, 4, 0);
+ ptr = hex2mem(ptr, ®s->lir, 4, 0);
+ ptr = hex2mem(ptr, ®s->lar, 4, 0);
+ ptr = hex2mem(ptr, ®s->mdrq, 4, 0);
+
+ ptr = hex2mem(ptr, ®s->e0, 4, 0); /* 15 */
+ ptr = hex2mem(ptr, ®s->e1, 4, 0);
+ ptr = hex2mem(ptr, ®s->e2, 4, 0);
+ ptr = hex2mem(ptr, ®s->e3, 4, 0);
+ ptr = hex2mem(ptr, ®s->e4, 4, 0);
+ ptr = hex2mem(ptr, ®s->e5, 4, 0);
+ ptr = hex2mem(ptr, ®s->e6, 4, 0);
+ ptr = hex2mem(ptr, ®s->e7, 4, 0);
+
+ ptr = hex2mem(ptr, &ssp, 4, 0);
+ ptr = hex2mem(ptr, &zero, 4, 0);
+ ptr = hex2mem(ptr, ®s->sp, 4, 0);
+ ptr = hex2mem(ptr, ®s->mcrh, 4, 0); /* 26 */
+ ptr = hex2mem(ptr, ®s->mcrl, 4, 0);
+ ptr = hex2mem(ptr, ®s->mcvf, 4, 0);
+
+ ptr = hex2mem(ptr, &zero, 4, 0); /* 29 - FPCR */
+ ptr = hex2mem(ptr, &zero, 4, 0);
+ ptr = hex2mem(ptr, &zero, 4, 0);
+ for (loop = 0; loop < 32; loop++) /* 32 - FS0-31 */
+ ptr = hex2mem(ptr, &zero, 4, 0);
+
+#if 0
+ /*
+ * See if the stack pointer has moved. If so, then copy
+ * the saved locals and ins to the new location.
+ */
+ unsigned long *newsp = (unsigned long *) registers[SP];
+ if (sp != newsp)
+ sp = memcpy(newsp, sp, 16 * 4);
+#endif
+
+ gdbstub_strcpy(output_buffer, "OK");
+ }
+ break;
+
+ /*
+ * mAA..AA,LLLL Read LLLL bytes at address AA..AA
+ */
+ case 'm':
+ ptr = &input_buffer[1];
+
+ if (hexToInt(&ptr, &addr) &&
+ *ptr++ == ',' &&
+ hexToInt(&ptr, &length)
+ ) {
+ if (mem2hex((char *) addr, output_buffer,
+ length, 1))
+ break;
+ gdbstub_strcpy(output_buffer, "E03");
+ } else {
+ gdbstub_strcpy(output_buffer, "E01");
+ }
+ break;
+
+ /*
+ * MAA..AA,LLLL: Write LLLL bytes at address AA.AA
+ * return OK
+ */
+ case 'M':
+ ptr = &input_buffer[1];
+
+ if (hexToInt(&ptr, &addr) &&
+ *ptr++ == ',' &&
+ hexToInt(&ptr, &length) &&
+ *ptr++ == ':'
+ ) {
+ if (hex2mem(ptr, (char *) addr, length, 1))
+ gdbstub_strcpy(output_buffer, "OK");
+ else
+ gdbstub_strcpy(output_buffer, "E03");
+
+ gdbstub_flush_caches = 1;
+ } else {
+ gdbstub_strcpy(output_buffer, "E02");
+ }
+ break;
+
+ /*
+ * cAA..AA Continue at address AA..AA(optional)
+ */
+ case 'c':
+ /* try to read optional parameter, pc unchanged if no
+ * parm */
+
+ ptr = &input_buffer[1];
+ if (hexToInt(&ptr, &addr))
+ regs->pc = addr;
+ goto done;
+
+ /*
+ * kill the program
+ */
+ case 'k' :
+ goto done; /* just continue */
+
+ /*
+ * Reset the whole machine (FIXME: system dependent)
+ */
+ case 'r':
+ break;
+
+ /*
+ * Step to next instruction
+ */
+ case 's':
+ /*
+ * using the T flag doesn't seem to perform single
+ * stepping (it seems to wind up being caught by the
+ * JTAG unit), so we have to use breakpoints and
+ * continue instead.
+ */
+ if (gdbstub_single_step(regs) < 0)
+ /* ignore any fault error for now */
+ gdbstub_printk("unable to set single-step"
+ " bp\n");
+ goto done;
+
+ /*
+ * Set baud rate (bBB)
+ */
+ case 'b':
+ do {
+ int baudrate;
+
+ ptr = &input_buffer[1];
+ if (!hexToInt(&ptr, &baudrate)) {
+ gdbstub_strcpy(output_buffer, "B01");
+ break;
+ }
+
+ if (baudrate) {
+ /* ACK before changing speed */
+ putpacket("OK");
+ gdbstub_io_set_baud(baudrate);
+ }
+ } while (0);
+ break;
+
+ /*
+ * Set breakpoint
+ */
+ case 'Z':
+ ptr = &input_buffer[1];
+
+ if (!hexToInt(&ptr, &loop) || *ptr++ != ',' ||
+ !hexToInt(&ptr, &addr) || *ptr++ != ',' ||
+ !hexToInt(&ptr, &length)
+ ) {
+ gdbstub_strcpy(output_buffer, "E01");
+ break;
+ }
+
+ /* only support software breakpoints */
+ gdbstub_strcpy(output_buffer, "E03");
+ if (loop != 0 ||
+ length < 1 ||
+ length > 7 ||
+ (unsigned long) addr < 4096)
+ break;
+
+ if (gdbstub_set_breakpoint((u8 *) addr, length) < 0)
+ break;
+
+ gdbstub_strcpy(output_buffer, "OK");
+ break;
+
+ /*
+ * Clear breakpoint
+ */
+ case 'z':
+ ptr = &input_buffer[1];
+
+ if (!hexToInt(&ptr, &loop) || *ptr++ != ',' ||
+ !hexToInt(&ptr, &addr) || *ptr++ != ',' ||
+ !hexToInt(&ptr, &length)
+ ) {
+ gdbstub_strcpy(output_buffer, "E01");
+ break;
+ }
+
+ /* only support software breakpoints */
+ gdbstub_strcpy(output_buffer, "E03");
+ if (loop != 0 ||
+ length < 1 ||
+ length > 7 ||
+ (unsigned long) addr < 4096)
+ break;
+
+ if (gdbstub_clear_breakpoint((u8 *) addr, length) < 0)
+ break;
+
+ gdbstub_strcpy(output_buffer, "OK");
+ break;
+
+ default:
+ gdbstub_proto("### GDB Unsupported Cmd '%s'\n",
+ input_buffer);
+ break;
+ }
+
+ /* reply to the request */
+ putpacket(output_buffer);
+ }
+
+done:
+ /*
+ * Need to flush the instruction cache here, as we may
+ * have deposited a breakpoint, and the icache probably
+ * has no way of knowing that a data ref to some location
+ * may have changed something that is in the instruction
+ * cache.
+ * NB: We flush both caches, just to be sure...
+ */
+ if (gdbstub_flush_caches)
+ gdbstub_purge_cache();
+
+ gdbstub_load_fpu();
+ mn10300_set_gdbleds(0);
+ if (excep == EXCEP_NMI)
+ NMICR = NMICR_NMIF;
+
+ touch_softlockup_watchdog();
+
+ local_irq_restore(epsw);
+ return 1;
+}
+
+/*
+ * handle event interception
+ */
+asmlinkage int gdbstub_intercept(struct pt_regs *regs,
+ enum exception_code excep)
+{
+ static u8 notfirst = 1;
+ int ret;
+
+ if (gdbstub_busy)
+ gdbstub_printk("--> gdbstub reentered itself\n");
+ gdbstub_busy = 1;
+
+ if (notfirst) {
+ unsigned long mdr;
+ asm("mov mdr,%0" : "=d"(mdr));
+
+ gdbstub_entry(
+ "--> gdbstub_intercept(%p,%04x) [MDR=%lx PC=%lx]\n",
+ regs, excep, mdr, regs->pc);
+
+ gdbstub_entry(
+ "PC: %08lx EPSW: %08lx SSP: %08lx mode: %s\n",
+ regs->pc, regs->epsw, (unsigned long) &ret,
+ user_mode(regs) ? "User" : "Super");
+ gdbstub_entry(
+ "d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n",
+ regs->d0, regs->d1, regs->d2, regs->d3);
+ gdbstub_entry(
+ "a0: %08lx a1: %08lx a2: %08lx a3: %08lx\n",
+ regs->a0, regs->a1, regs->a2, regs->a3);
+ gdbstub_entry(
+ "e0: %08lx e1: %08lx e2: %08lx e3: %08lx\n",
+ regs->e0, regs->e1, regs->e2, regs->e3);
+ gdbstub_entry(
+ "e4: %08lx e5: %08lx e6: %08lx e7: %08lx\n",
+ regs->e4, regs->e5, regs->e6, regs->e7);
+ gdbstub_entry(
+ "lar: %08lx lir: %08lx mdr: %08lx usp: %08lx\n",
+ regs->lar, regs->lir, regs->mdr, regs->sp);
+ gdbstub_entry(
+ "cvf: %08lx crl: %08lx crh: %08lx drq: %08lx\n",
+ regs->mcvf, regs->mcrl, regs->mcrh, regs->mdrq);
+ gdbstub_entry(
+ "threadinfo=%p task=%p)\n",
+ current_thread_info(), current);
+ } else {
+ notfirst = 1;
+ }
+
+ ret = gdbstub(regs, excep);
+
+ gdbstub_entry("<-- gdbstub_intercept()\n");
+ gdbstub_busy = 0;
+ return ret;
+}
+
+/*
+ * handle the GDB stub itself causing an exception
+ */
+asmlinkage void gdbstub_exception(struct pt_regs *regs,
+ enum exception_code excep)
+{
+ unsigned long mdr;
+
+ asm("mov mdr,%0" : "=d"(mdr));
+ gdbstub_entry("--> gdbstub exception({%p},%04x) [MDR=%lx]\n",
+ regs, excep, mdr);
+
+ while ((unsigned long) regs == 0xffffffff) {}
+
+ /* handle guarded memory accesses where we know it might fault */
+ if (regs->pc == (unsigned) gdbstub_read_byte_guard) {
+ regs->pc = (unsigned) gdbstub_read_byte_cont;
+ goto fault;
+ }
+
+ if (regs->pc == (unsigned) gdbstub_read_word_guard) {
+ regs->pc = (unsigned) gdbstub_read_word_cont;
+ goto fault;
+ }
+
+ if (regs->pc == (unsigned) gdbstub_read_dword_guard) {
+ regs->pc = (unsigned) gdbstub_read_dword_cont;
+ goto fault;
+ }
+
+ if (regs->pc == (unsigned) gdbstub_write_byte_guard) {
+ regs->pc = (unsigned) gdbstub_write_byte_cont;
+ goto fault;
+ }
+
+ if (regs->pc == (unsigned) gdbstub_write_word_guard) {
+ regs->pc = (unsigned) gdbstub_write_word_cont;
+ goto fault;
+ }
+
+ if (regs->pc == (unsigned) gdbstub_write_dword_guard) {
+ regs->pc = (unsigned) gdbstub_write_dword_cont;
+ goto fault;
+ }
+
+ gdbstub_printk("\n### GDB stub caused an exception ###\n");
+
+ /* something went horribly wrong */
+ console_verbose();
+ show_registers(regs);
+
+ panic("GDB Stub caused an unexpected exception - can't continue\n");
+
+ /* we caught an attempt by the stub to access silly memory */
+fault:
+ gdbstub_entry("<-- gdbstub exception() = EFAULT\n");
+ regs->d0 = -EFAULT;
+ return;
+}
+
+/*
+ * send an exit message to GDB
+ */
+void gdbstub_exit(int status)
+{
+ unsigned char checksum;
+ unsigned char ch;
+ int count;
+
+ gdbstub_busy = 1;
+ output_buffer[0] = 'W';
+ output_buffer[1] = hexchars[(status >> 4) & 0x0F];
+ output_buffer[2] = hexchars[status & 0x0F];
+ output_buffer[3] = 0;
+
+ gdbstub_io_tx_char('$');
+ checksum = 0;
+ count = 0;
+
+ while ((ch = output_buffer[count]) != 0) {
+ gdbstub_io_tx_char(ch);
+ checksum += ch;
+ count += 1;
+ }
+
+ gdbstub_io_tx_char('#');
+ gdbstub_io_tx_char(hexchars[checksum >> 4]);
+ gdbstub_io_tx_char(hexchars[checksum & 0xf]);
+
+ /* make sure the output is flushed, or else RedBoot might clobber it */
+ gdbstub_io_tx_flush();
+
+ gdbstub_busy = 0;
+}
+
+/*
+ * initialise the GDB stub
+ */
+asmlinkage void __init gdbstub_init(void)
+{
+#ifdef CONFIG_GDBSTUB_IMMEDIATE
+ unsigned char ch;
+ int ret;
+#endif
+
+ gdbstub_busy = 1;
+
+ printk(KERN_INFO "%s", gdbstub_banner);
+
+ gdbstub_io_init();
+
+ gdbstub_entry("--> gdbstub_init\n");
+
+ /* try to talk to GDB (or anyone insane enough to want to type GDB
+ * protocol by hand) */
+ gdbstub_io("### GDB Tx ACK\n");
+ gdbstub_io_tx_char('+'); /* 'hello world' */
+
+#ifdef CONFIG_GDBSTUB_IMMEDIATE
+ gdbstub_printk("GDB Stub waiting for packet\n");
+
+ /* in case GDB is started before us, ACK any packets that are already
+ * sitting there (presumably "$?#xx")
+ */
+ do { gdbstub_io_rx_char(&ch, 0); } while (ch != '$');
+ do { gdbstub_io_rx_char(&ch, 0); } while (ch != '#');
+ /* eat first csum byte */
+ do { ret = gdbstub_io_rx_char(&ch, 0); } while (ret != 0);
+ /* eat second csum byte */
+ do { ret = gdbstub_io_rx_char(&ch, 0); } while (ret != 0);
+
+ gdbstub_io("### GDB Tx NAK\n");
+ gdbstub_io_tx_char('-'); /* NAK it */
+
+#else
+ printk("GDB Stub ready\n");
+#endif
+
+ gdbstub_busy = 0;
+ gdbstub_entry("<-- gdbstub_init\n");
+}
+
+/*
+ * register the console at a more appropriate time
+ */
+#ifdef CONFIG_GDBSTUB_CONSOLE
+static int __init gdbstub_postinit(void)
+{
+ printk(KERN_NOTICE "registering console\n");
+ register_console(&gdbstub_console);
+ return 0;
+}
+
+__initcall(gdbstub_postinit);
+#endif
+
+/*
+ * handle character reception on GDB serial port
+ * - jump into the GDB stub if BREAK is detected on the serial line
+ */
+asmlinkage void gdbstub_rx_irq(struct pt_regs *regs, enum exception_code excep)
+{
+ char ch;
+ int ret;
+
+ gdbstub_entry("--> gdbstub_rx_irq\n");
+
+ do {
+ ret = gdbstub_io_rx_char(&ch, 1);
+ if (ret != -EIO && ret != -EAGAIN) {
+ if (ret != -EINTR)
+ gdbstub_rx_unget = ch;
+ gdbstub(regs, excep);
+ }
+ } while (ret != -EAGAIN);
+
+ gdbstub_entry("<-- gdbstub_rx_irq\n");
+}
--- /dev/null
+/* Boot entry point for MN10300 kernel
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#include <linux/threads.h>
+#include <linux/linkage.h>
+#include <linux/serial_reg.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/frame.inc>
+#include <asm/param.h>
+#include <asm/unit/serial.h>
+
+ .section .text.head,"ax"
+
+###############################################################################
+#
+# bootloader entry point
+#
+###############################################################################
+ .globl _start
+ .type _start,@function
+_start:
+ # save commandline pointer
+ mov d0,a3
+
+ # preload the PGD pointer register
+ mov swapper_pg_dir,d0
+ mov d0,(PTBR)
+
+ # turn on the TLBs
+ mov MMUCTR_IIV|MMUCTR_DIV,d0
+ mov d0,(MMUCTR)
+ mov MMUCTR_ITE|MMUCTR_DTE|MMUCTR_CE,d0
+ mov d0,(MMUCTR)
+
+ # turn on AM33v2 exception handling mode and set the trap table base
+ movhu (CPUP),d0
+ or CPUP_EXM_AM33V2,d0
+ movhu d0,(CPUP)
+ mov CONFIG_INTERRUPT_VECTOR_BASE,d0
+ mov d0,(TBR)
+
+ # invalidate and enable both of the caches
+ mov CHCTR,a0
+ clr d0
+ movhu d0,(a0) # turn off first
+ mov CHCTR_ICINV|CHCTR_DCINV,d0
+ movhu d0,(a0)
+ setlb
+ mov (a0),d0
+ btst CHCTR_ICBUSY|CHCTR_DCBUSY,d0 # wait till not busy
+ lne
+
+#ifndef CONFIG_MN10300_CACHE_DISABLED
+#ifdef CONFIG_MN10300_CACHE_WBACK
+#ifndef CONFIG_MN10300_CACHE_WBACK_NOWRALLOC
+ mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRBACK,d0
+#else
+ mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRBACK|CHCTR_DCALMD,d0
+#endif /* CACHE_DISABLED */
+#else
+ mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRTHROUGH,d0
+#endif /* WBACK */
+ movhu d0,(a0) # enable
+#endif /* NOWRALLOC */
+
+ # turn on RTS on the debug serial port if applicable
+#ifdef CONFIG_MN10300_UNIT_ASB2305
+ bset UART_MCR_RTS,(ASB2305_DEBUG_MCR)
+#endif
+
+ # clear the BSS area
+ mov __bss_start,a0
+ mov __bss_stop,a1
+ clr d0
+bssclear:
+ cmp a1,a0
+ bge bssclear_end
+ mov d0,(a0)
+ inc4 a0
+ bra bssclear
+bssclear_end:
+
+ # retrieve the parameters (including command line) before we overwrite
+ # them
+ cmp 0xabadcafe,d1
+ bne __no_parameters
+
+__copy_parameters:
+ mov redboot_command_line,a0
+ mov a0,a1
+ add COMMAND_LINE_SIZE,a1
+1:
+ movbu (a3),d0
+ inc a3
+ movbu d0,(a0)
+ inc a0
+ cmp a1,a0
+ blt 1b
+
+ mov redboot_platform_name,a0
+ mov a0,a1
+ add COMMAND_LINE_SIZE,a1
+ mov d2,a3
+1:
+ movbu (a3),d0
+ inc a3
+ movbu d0,(a0)
+ inc a0
+ cmp a1,a0
+ blt 1b
+
+__no_parameters:
+
+ # set up the registers with recognisable rubbish in them
+ mov init_thread_union+THREAD_SIZE-12,sp
+
+ mov 0xea01eaea,d0
+ mov d0,(4,sp) # EPSW save area
+ mov 0xea02eaea,d0
+ mov d0,(8,sp) # PC save area
+
+ mov 0xeb0060ed,d0
+ mov d0,mdr
+ mov 0xeb0061ed,d0
+ mov d0,mdrq
+ mov 0xeb0062ed,d0
+ mov d0,mcrh
+ mov 0xeb0063ed,d0
+ mov d0,mcrl
+ mov 0xeb0064ed,d0
+ mov d0,mcvf
+ mov 0xed0065ed,a3
+ mov a3,usp
+
+ mov 0xed00e0ed,e0
+ mov 0xed00e1ed,e1
+ mov 0xed00e2ed,e2
+ mov 0xed00e3ed,e3
+ mov 0xed00e4ed,e4
+ mov 0xed00e5ed,e5
+ mov 0xed00e6ed,e6
+ mov 0xed00e7ed,e7
+
+ mov 0xed00d0ed,d0
+ mov 0xed00d1ed,d1
+ mov 0xed00d2ed,d2
+ mov 0xed00d3ed,d3
+ mov 0xed00a0ed,a0
+ mov 0xed00a1ed,a1
+ mov 0xed00a2ed,a2
+ mov 0,a3
+
+ # set up the initial kernel stack
+ SAVE_ALL
+ mov 0xffffffff,d0
+ mov d0,(REG_ORIG_D0,fp)
+
+ # put different recognisable rubbish in the regs
+ mov 0xfb0060ed,d0
+ mov d0,mdr
+ mov 0xfb0061ed,d0
+ mov d0,mdrq
+ mov 0xfb0062ed,d0
+ mov d0,mcrh
+ mov 0xfb0063ed,d0
+ mov d0,mcrl
+ mov 0xfb0064ed,d0
+ mov d0,mcvf
+ mov 0xfd0065ed,a0
+ mov a0,usp
+
+ mov 0xfd00e0ed,e0
+ mov 0xfd00e1ed,e1
+ mov 0xfd00e2ed,e2
+ mov 0xfd00e3ed,e3
+ mov 0xfd00e4ed,e4
+ mov 0xfd00e5ed,e5
+ mov 0xfd00e6ed,e6
+ mov 0xfd00e7ed,e7
+
+ mov 0xfd00d0ed,d0
+ mov 0xfd00d1ed,d1
+ mov 0xfd00d2ed,d2
+ mov 0xfd00d3ed,d3
+ mov 0xfd00a0ed,a0
+ mov 0xfd00a1ed,a1
+ mov 0xfd00a2ed,a2
+
+ # we may be holding current in E2
+#ifdef CONFIG_MN10300_CURRENT_IN_E2
+ mov init_task,e2
+#endif
+
+ # initialise the processor and the unit
+ call processor_init[],0
+ call unit_init[],0
+
+#ifdef CONFIG_GDBSTUB
+ call gdbstub_init[],0
+
+#ifdef CONFIG_GDBSTUB_IMMEDIATE
+ .globl __gdbstub_pause
+__gdbstub_pause:
+ bra __gdbstub_pause
+#endif
+#endif
+
+ jmp start_kernel
+ .size _start, _start-.
+ENTRY(__head_end)
+
+/*
+ * This is initialized to disallow all access to the low 2G region
+ * - the high 2G region is managed directly by the MMU
+ * - range 0x70000000-0x7C000000 are initialised for use by VMALLOC
+ */
+ .section .bss
+ .balign PAGE_SIZE
+ENTRY(swapper_pg_dir)
+ .space PTRS_PER_PGD*4
+
+/*
+ * The page tables are initialized to only 8MB here - the final page
+ * tables are set up later depending on memory size.
+ */
+
+ .balign PAGE_SIZE
+ENTRY(empty_zero_page)
+ .space PAGE_SIZE
+
+ .balign PAGE_SIZE
+ENTRY(empty_bad_page)
+ .space PAGE_SIZE
+
+ .balign PAGE_SIZE
+ENTRY(empty_bad_pte_table)
+ .space PAGE_SIZE
+
+ .balign PAGE_SIZE
+ENTRY(large_page_table)
+ .space PAGE_SIZE
+
+ .balign PAGE_SIZE
+ENTRY(kernel_vmalloc_ptes)
+ .space ((VMALLOC_END-VMALLOC_START)/PAGE_SIZE)*4
--- /dev/null
+/* MN10300 Initial task definitions
+ *
+ * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/init_task.h>
+#include <linux/fs.h>
+#include <linux/mqueue.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+
+static struct fs_struct init_fs = INIT_FS;
+static struct files_struct init_files = INIT_FILES;
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+struct mm_struct init_mm = INIT_MM(init_mm);
+EXPORT_SYMBOL(init_mm);
+
+/*
+ * Initial thread structure.
+ *
+ * We need to make sure that this is THREAD_SIZE aligned due to the
+ * way process stacks are handled. This is done by having a special
+ * "init_task" linker map entry..
+ */
+union thread_union init_thread_union
+ __attribute__((__section__(".data.init_task"))) =
+ { INIT_THREAD_INFO(init_task) };
+
+/*
+ * Initial task structure.
+ *
+ * All other task structs will be allocated on slabs in fork.c
+ */
+struct task_struct init_task = INIT_TASK(init_task);
+EXPORT_SYMBOL(init_task);
--- /dev/null
+/* Internal definitions for the arch part of the core kernel
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+/*
+ * kthread.S
+ */
+extern int kernel_thread_helper(int);
+
+/*
+ * entry.S
+ */
+extern void ret_from_fork(struct task_struct *) __attribute__((noreturn));
--- /dev/null
+/* MN10300 Misaligned multibyte-word I/O
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+
+/*
+ * output data from a potentially misaligned buffer
+ */
+void __outsl(unsigned long addr, const void *buffer, int count)
+{
+ const unsigned char *buf = buffer;
+ unsigned long val;
+
+ while (count--) {
+ memcpy(&val, buf, 4);
+ outl(val, addr);
+ buf += 4;
+ }
+}
+EXPORT_SYMBOL(__outsl);
--- /dev/null
+/* MN10300 Arch-specific interrupt handling
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/seq_file.h>
+#include <asm/setup.h>
+
+unsigned long __mn10300_irq_enabled_epsw = EPSW_IE | EPSW_IM_7;
+EXPORT_SYMBOL(__mn10300_irq_enabled_epsw);
+
+atomic_t irq_err_count;
+
+/*
+ * MN10300 INTC controller operations
+ */
+static void mn10300_cpupic_disable(unsigned int irq)
+{
+ u16 tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_DETECT;
+ tmp = GxICR(irq);
+}
+
+static void mn10300_cpupic_enable(unsigned int irq)
+{
+ u16 tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE;
+ tmp = GxICR(irq);
+}
+
+static void mn10300_cpupic_ack(unsigned int irq)
+{
+ u16 tmp;
+ *(volatile u8 *) &GxICR(irq) = GxICR_DETECT;
+ tmp = GxICR(irq);
+}
+
+static void mn10300_cpupic_mask(unsigned int irq)
+{
+ u16 tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL);
+ tmp = GxICR(irq);
+}
+
+static void mn10300_cpupic_mask_ack(unsigned int irq)
+{
+ u16 tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_DETECT;
+ tmp = GxICR(irq);
+}
+
+static void mn10300_cpupic_unmask(unsigned int irq)
+{
+ u16 tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
+ tmp = GxICR(irq);
+}
+
+static void mn10300_cpupic_end(unsigned int irq)
+{
+ u16 tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE;
+ tmp = GxICR(irq);
+}
+
+static struct irq_chip mn10300_cpu_pic = {
+ .name = "cpu",
+ .disable = mn10300_cpupic_disable,
+ .enable = mn10300_cpupic_enable,
+ .ack = mn10300_cpupic_ack,
+ .mask = mn10300_cpupic_mask,
+ .mask_ack = mn10300_cpupic_mask_ack,
+ .unmask = mn10300_cpupic_unmask,
+ .end = mn10300_cpupic_end,
+};
+
+/*
+ * 'what should we do if we get a hw irq event on an illegal vector'.
+ * each architecture has to answer this themselves.
+ */
+void ack_bad_irq(int irq)
+{
+ printk(KERN_WARNING "unexpected IRQ trap at vector %02x\n", irq);
+}
+
+/*
+ * change the level at which an IRQ executes
+ * - must not be called whilst interrupts are being processed!
+ */
+void set_intr_level(int irq, u16 level)
+{
+ u16 tmp;
+
+ if (in_interrupt())
+ BUG();
+
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_ENABLE) | level;
+ tmp = GxICR(irq);
+}
+
+/*
+ * mark an interrupt to be ACK'd after interrupt handlers have been run rather
+ * than before
+ * - see Documentation/mn10300/features.txt
+ */
+void set_intr_postackable(int irq)
+{
+ set_irq_handler(irq, handle_level_irq);
+}
+
+/*
+ * initialise the interrupt system
+ */
+void __init init_IRQ(void)
+{
+ int irq;
+
+ for (irq = 0; irq < NR_IRQS; irq++)
+ if (irq_desc[irq].chip == &no_irq_type)
+ set_irq_chip_and_handler(irq, &mn10300_cpu_pic,
+ handle_edge_irq);
+ unit_init_IRQ();
+}
+
+/*
+ * handle normal device IRQs
+ */
+asmlinkage void do_IRQ(void)
+{
+ unsigned long sp, epsw, irq_disabled_epsw, old_irq_enabled_epsw;
+ int irq;
+
+ sp = current_stack_pointer();
+ if (sp - (sp & ~(THREAD_SIZE - 1)) < STACK_WARN)
+ BUG();
+
+ /* make sure local_irq_enable() doesn't muck up the interrupt priority
+ * setting in EPSW */
+ old_irq_enabled_epsw = __mn10300_irq_enabled_epsw;
+ local_save_flags(epsw);
+ __mn10300_irq_enabled_epsw = EPSW_IE | (EPSW_IM & epsw);
+ irq_disabled_epsw = EPSW_IE | MN10300_CLI_LEVEL;
+
+ __IRQ_STAT(smp_processor_id(), __irq_count)++;
+
+ irq_enter();
+
+ for (;;) {
+ /* ask the interrupt controller for the next IRQ to process
+ * - the result we get depends on EPSW.IM
+ */
+ irq = IAGR & IAGR_GN;
+ if (!irq)
+ break;
+
+ local_irq_restore(irq_disabled_epsw);
+
+ generic_handle_irq(irq >> 2);
+
+ /* restore IRQ controls for IAGR access */
+ local_irq_restore(epsw);
+ }
+
+ __mn10300_irq_enabled_epsw = old_irq_enabled_epsw;
+
+ irq_exit();
+}
+
+/*
+ * Display interrupt management information through /proc/interrupts
+ */
+int show_interrupts(struct seq_file *p, void *v)
+{
+ int i = *(loff_t *) v, j, cpu;
+ struct irqaction *action;
+ unsigned long flags;
+
+ switch (i) {
+ /* display column title bar naming CPUs */
+ case 0:
+ seq_printf(p, " ");
+ for (j = 0; j < NR_CPUS; j++)
+ if (cpu_online(j))
+ seq_printf(p, "CPU%d ", j);
+ seq_putc(p, '\n');
+ break;
+
+ /* display information rows, one per active CPU */
+ case 1 ... NR_IRQS - 1:
+ spin_lock_irqsave(&irq_desc[i].lock, flags);
+
+ action = irq_desc[i].action;
+ if (action) {
+ seq_printf(p, "%3d: ", i);
+ for_each_present_cpu(cpu)
+ seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]);
+ seq_printf(p, " %14s.%u", irq_desc[i].chip->name,
+ (GxICR(i) & GxICR_LEVEL) >>
+ GxICR_LEVEL_SHIFT);
+ seq_printf(p, " %s", action->name);
+
+ for (action = action->next;
+ action;
+ action = action->next)
+ seq_printf(p, ", %s", action->name);
+
+ seq_putc(p, '\n');
+ }
+
+ spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+ break;
+
+ /* polish off with NMI and error counters */
+ case NR_IRQS:
+ seq_printf(p, "NMI: ");
+ for (j = 0; j < NR_CPUS; j++)
+ if (cpu_online(j))
+ seq_printf(p, "%10u ", nmi_count(j));
+ seq_putc(p, '\n');
+
+ seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
+ break;
+ }
+
+ return 0;
+}
--- /dev/null
+/* MN10300 In-kernel program execution
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/linkage.h>
+#include <asm/unistd.h>
+
+###############################################################################
+#
+# Do a system call from kernel instead of calling sys_execve so we end up with
+# proper pt_regs.
+#
+# int kernel_execve(const char *filename, char *const argv[],
+# char *const envp[])
+#
+# On entry: D0/D1/8(SP): arguments to function
+# On return: D0: syscall return.
+#
+###############################################################################
+ .globl kernel_execve
+ .type kernel_execve,@function
+kernel_execve:
+ mov a3,a1
+ mov d0,a0
+ mov (12,sp),a3
+ mov +__NR_execve,d0
+ syscall 0
+ mov a1,a3
+ rets
+
+ .size kernel_execve,.-kernel_execve
--- /dev/null
+/* MN10300 Kernel probes implementation
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by Mark Salter (msalter@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public Licence as published by
+ * the Free Software Foundation; either version 2 of the Licence, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public Licence for more details.
+ *
+ * You should have received a copy of the GNU General Public Licence
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#include <linux/kprobes.h>
+#include <linux/ptrace.h>
+#include <linux/spinlock.h>
+#include <linux/preempt.h>
+#include <linux/kdebug.h>
+#include <asm/cacheflush.h>
+
+struct kretprobe_blackpoint kretprobe_blacklist[] = { { NULL, NULL } };
+const int kretprobe_blacklist_size = ARRAY_SIZE(kretprobe_blacklist);
+
+/* kprobe_status settings */
+#define KPROBE_HIT_ACTIVE 0x00000001
+#define KPROBE_HIT_SS 0x00000002
+
+static struct kprobe *current_kprobe;
+static unsigned long current_kprobe_orig_pc;
+static unsigned long current_kprobe_next_pc;
+static int current_kprobe_ss_flags;
+static unsigned long kprobe_status;
+static kprobe_opcode_t current_kprobe_ss_buf[MAX_INSN_SIZE + 2];
+static unsigned long current_kprobe_bp_addr;
+
+DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
+
+
+/* singlestep flag bits */
+#define SINGLESTEP_BRANCH 1
+#define SINGLESTEP_PCREL 2
+
+#define READ_BYTE(p, valp) \
+ do { *(u8 *)(valp) = *(u8 *)(p); } while (0)
+
+#define READ_WORD16(p, valp) \
+ do { \
+ READ_BYTE((p), (valp)); \
+ READ_BYTE((u8 *)(p) + 1, (u8 *)(valp) + 1); \
+ } while (0)
+
+#define READ_WORD32(p, valp) \
+ do { \
+ READ_BYTE((p), (valp)); \
+ READ_BYTE((u8 *)(p) + 1, (u8 *)(valp) + 1); \
+ READ_BYTE((u8 *)(p) + 2, (u8 *)(valp) + 2); \
+ READ_BYTE((u8 *)(p) + 3, (u8 *)(valp) + 3); \
+ } while (0)
+
+
+static const u8 mn10300_insn_sizes[256] =
+{
+ /* 1 2 3 4 5 6 7 8 9 a b c d e f */
+ 1, 3, 3, 3, 1, 3, 3, 3, 1, 3, 3, 3, 1, 3, 3, 3, /* 0 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 1 */
+ 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, /* 2 */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, /* 3 */
+ 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, /* 4 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, /* 5 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 7 */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* 8 */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* 9 */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* a */
+ 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* b */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 2, /* c */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* d */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* e */
+ 0, 2, 2, 2, 2, 2, 2, 4, 0, 3, 0, 4, 0, 6, 7, 1 /* f */
+};
+
+#define LT (1 << 0)
+#define GT (1 << 1)
+#define GE (1 << 2)
+#define LE (1 << 3)
+#define CS (1 << 4)
+#define HI (1 << 5)
+#define CC (1 << 6)
+#define LS (1 << 7)
+#define EQ (1 << 8)
+#define NE (1 << 9)
+#define RA (1 << 10)
+#define VC (1 << 11)
+#define VS (1 << 12)
+#define NC (1 << 13)
+#define NS (1 << 14)
+
+static const u16 cond_table[] = {
+ /* V C N Z */
+ /* 0 0 0 0 */ (NE | NC | CC | VC | GE | GT | HI),
+ /* 0 0 0 1 */ (EQ | NC | CC | VC | GE | LE | LS),
+ /* 0 0 1 0 */ (NE | NS | CC | VC | LT | LE | HI),
+ /* 0 0 1 1 */ (EQ | NS | CC | VC | LT | LE | LS),
+ /* 0 1 0 0 */ (NE | NC | CS | VC | GE | GT | LS),
+ /* 0 1 0 1 */ (EQ | NC | CS | VC | GE | LE | LS),
+ /* 0 1 1 0 */ (NE | NS | CS | VC | LT | LE | LS),
+ /* 0 1 1 1 */ (EQ | NS | CS | VC | LT | LE | LS),
+ /* 1 0 0 0 */ (NE | NC | CC | VS | LT | LE | HI),
+ /* 1 0 0 1 */ (EQ | NC | CC | VS | LT | LE | LS),
+ /* 1 0 1 0 */ (NE | NS | CC | VS | GE | GT | HI),
+ /* 1 0 1 1 */ (EQ | NS | CC | VS | GE | LE | LS),
+ /* 1 1 0 0 */ (NE | NC | CS | VS | LT | LE | LS),
+ /* 1 1 0 1 */ (EQ | NC | CS | VS | LT | LE | LS),
+ /* 1 1 1 0 */ (NE | NS | CS | VS | GE | GT | LS),
+ /* 1 1 1 1 */ (EQ | NS | CS | VS | GE | LE | LS),
+};
+
+/*
+ * Calculate what the PC will be after executing next instruction
+ */
+static unsigned find_nextpc(struct pt_regs *regs, int *flags)
+{
+ unsigned size;
+ s8 x8;
+ s16 x16;
+ s32 x32;
+ u8 opc, *pc, *sp, *next;
+
+ next = 0;
+ *flags = SINGLESTEP_PCREL;
+
+ pc = (u8 *) regs->pc;
+ sp = (u8 *) (regs + 1);
+ opc = *pc;
+
+ size = mn10300_insn_sizes[opc];
+ if (size > 0) {
+ next = pc + size;
+ } else {
+ switch (opc) {
+ /* Bxx (d8,PC) */
+ case 0xc0 ... 0xca:
+ x8 = 2;
+ if (cond_table[regs->epsw & 0xf] & (1 << (opc & 0xf)))
+ x8 = (s8)pc[1];
+ next = pc + x8;
+ *flags |= SINGLESTEP_BRANCH;
+ break;
+
+ /* JMP (d16,PC) or CALL (d16,PC) */
+ case 0xcc:
+ case 0xcd:
+ READ_WORD16(pc + 1, &x16);
+ next = pc + x16;
+ *flags |= SINGLESTEP_BRANCH;
+ break;
+
+ /* JMP (d32,PC) or CALL (d32,PC) */
+ case 0xdc:
+ case 0xdd:
+ READ_WORD32(pc + 1, &x32);
+ next = pc + x32;
+ *flags |= SINGLESTEP_BRANCH;
+ break;
+
+ /* RETF */
+ case 0xde:
+ next = (u8 *)regs->mdr;
+ *flags &= ~SINGLESTEP_PCREL;
+ *flags |= SINGLESTEP_BRANCH;
+ break;
+
+ /* RET */
+ case 0xdf:
+ sp += pc[2];
+ READ_WORD32(sp, &x32);
+ next = (u8 *)x32;
+ *flags &= ~SINGLESTEP_PCREL;
+ *flags |= SINGLESTEP_BRANCH;
+ break;
+
+ case 0xf0:
+ next = pc + 2;
+ opc = pc[1];
+ if (opc >= 0xf0 && opc <= 0xf7) {
+ /* JMP (An) / CALLS (An) */
+ switch (opc & 3) {
+ case 0:
+ next = (u8 *)regs->a0;
+ break;
+ case 1:
+ next = (u8 *)regs->a1;
+ break;
+ case 2:
+ next = (u8 *)regs->a2;
+ break;
+ case 3:
+ next = (u8 *)regs->a3;
+ break;
+ }
+ *flags &= ~SINGLESTEP_PCREL;
+ *flags |= SINGLESTEP_BRANCH;
+ } else if (opc == 0xfc) {
+ /* RETS */
+ READ_WORD32(sp, &x32);
+ next = (u8 *)x32;
+ *flags &= ~SINGLESTEP_PCREL;
+ *flags |= SINGLESTEP_BRANCH;
+ } else if (opc == 0xfd) {
+ /* RTI */
+ READ_WORD32(sp + 4, &x32);
+ next = (u8 *)x32;
+ *flags &= ~SINGLESTEP_PCREL;
+ *flags |= SINGLESTEP_BRANCH;
+ }
+ break;
+
+ /* potential 3-byte conditional branches */
+ case 0xf8:
+ next = pc + 3;
+ opc = pc[1];
+ if (opc >= 0xe8 && opc <= 0xeb &&
+ (cond_table[regs->epsw & 0xf] &
+ (1 << ((opc & 0xf) + 3)))
+ ) {
+ READ_BYTE(pc+2, &x8);
+ next = pc + x8;
+ *flags |= SINGLESTEP_BRANCH;
+ }
+ break;
+
+ case 0xfa:
+ if (pc[1] == 0xff) {
+ /* CALLS (d16,PC) */
+ READ_WORD16(pc + 2, &x16);
+ next = pc + x16;
+ } else
+ next = pc + 4;
+ *flags |= SINGLESTEP_BRANCH;
+ break;
+
+ case 0xfc:
+ x32 = 6;
+ if (pc[1] == 0xff) {
+ /* CALLS (d32,PC) */
+ READ_WORD32(pc + 2, &x32);
+ }
+ next = pc + x32;
+ *flags |= SINGLESTEP_BRANCH;
+ break;
+ /* LXX (d8,PC) */
+ /* SETLB - loads the next four bytes into the LIR reg */
+ case 0xd0 ... 0xda:
+ case 0xdb:
+ panic("Can't singlestep Lxx/SETLB\n");
+ break;
+ }
+ }
+ return (unsigned)next;
+
+}
+
+/*
+ * set up out of place singlestep of some branching instructions
+ */
+static unsigned __kprobes singlestep_branch_setup(struct pt_regs *regs)
+{
+ u8 opc, *pc, *sp, *next;
+
+ next = NULL;
+ pc = (u8 *) regs->pc;
+ sp = (u8 *) (regs + 1);
+
+ switch (pc[0]) {
+ case 0xc0 ... 0xca: /* Bxx (d8,PC) */
+ case 0xcc: /* JMP (d16,PC) */
+ case 0xdc: /* JMP (d32,PC) */
+ case 0xf8: /* Bxx (d8,PC) 3-byte version */
+ /* don't really need to do anything except cause trap */
+ next = pc;
+ break;
+
+ case 0xcd: /* CALL (d16,PC) */
+ pc[1] = 5;
+ pc[2] = 0;
+ next = pc + 5;
+ break;
+
+ case 0xdd: /* CALL (d32,PC) */
+ pc[1] = 7;
+ pc[2] = 0;
+ pc[3] = 0;
+ pc[4] = 0;
+ next = pc + 7;
+ break;
+
+ case 0xde: /* RETF */
+ next = pc + 3;
+ regs->mdr = (unsigned) next;
+ break;
+
+ case 0xdf: /* RET */
+ sp += pc[2];
+ next = pc + 3;
+ *(unsigned *)sp = (unsigned) next;
+ break;
+
+ case 0xf0:
+ next = pc + 2;
+ opc = pc[1];
+ if (opc >= 0xf0 && opc <= 0xf3) {
+ /* CALLS (An) */
+ /* use CALLS (d16,PC) to avoid mucking with An */
+ pc[0] = 0xfa;
+ pc[1] = 0xff;
+ pc[2] = 4;
+ pc[3] = 0;
+ next = pc + 4;
+ } else if (opc >= 0xf4 && opc <= 0xf7) {
+ /* JMP (An) */
+ next = pc;
+ } else if (opc == 0xfc) {
+ /* RETS */
+ next = pc + 2;
+ *(unsigned *) sp = (unsigned) next;
+ } else if (opc == 0xfd) {
+ /* RTI */
+ next = pc + 2;
+ *(unsigned *)(sp + 4) = (unsigned) next;
+ }
+ break;
+
+ case 0xfa: /* CALLS (d16,PC) */
+ pc[2] = 4;
+ pc[3] = 0;
+ next = pc + 4;
+ break;
+
+ case 0xfc: /* CALLS (d32,PC) */
+ pc[2] = 6;
+ pc[3] = 0;
+ pc[4] = 0;
+ pc[5] = 0;
+ next = pc + 6;
+ break;
+
+ case 0xd0 ... 0xda: /* LXX (d8,PC) */
+ case 0xdb: /* SETLB */
+ panic("Can't singlestep Lxx/SETLB\n");
+ }
+
+ return (unsigned) next;
+}
+
+int __kprobes arch_prepare_kprobe(struct kprobe *p)
+{
+ return 0;
+}
+
+void __kprobes arch_copy_kprobe(struct kprobe *p)
+{
+ memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE);
+}
+
+void __kprobes arch_arm_kprobe(struct kprobe *p)
+{
+ *p->addr = BREAKPOINT_INSTRUCTION;
+ flush_icache_range((unsigned long) p->addr,
+ (unsigned long) p->addr + sizeof(kprobe_opcode_t));
+}
+
+void __kprobes arch_disarm_kprobe(struct kprobe *p)
+{
+ mn10300_dcache_flush();
+ mn10300_icache_inv();
+}
+
+void arch_remove_kprobe(struct kprobe *p)
+{
+}
+
+static inline
+void __kprobes disarm_kprobe(struct kprobe *p, struct pt_regs *regs)
+{
+ *p->addr = p->opcode;
+ regs->pc = (unsigned long) p->addr;
+ mn10300_dcache_flush();
+ mn10300_icache_inv();
+}
+
+static inline
+void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
+{
+ unsigned long nextpc;
+
+ current_kprobe_orig_pc = regs->pc;
+ memcpy(current_kprobe_ss_buf, &p->ainsn.insn[0], MAX_INSN_SIZE);
+ regs->pc = (unsigned long) current_kprobe_ss_buf;
+
+ nextpc = find_nextpc(regs, ¤t_kprobe_ss_flags);
+ if (current_kprobe_ss_flags & SINGLESTEP_PCREL)
+ current_kprobe_next_pc =
+ current_kprobe_orig_pc + (nextpc - regs->pc);
+ else
+ current_kprobe_next_pc = nextpc;
+
+ /* branching instructions need special handling */
+ if (current_kprobe_ss_flags & SINGLESTEP_BRANCH)
+ nextpc = singlestep_branch_setup(regs);
+
+ current_kprobe_bp_addr = nextpc;
+
+ *(u8 *) nextpc = BREAKPOINT_INSTRUCTION;
+ mn10300_dcache_flush_range2((unsigned) current_kprobe_ss_buf,
+ sizeof(current_kprobe_ss_buf));
+ mn10300_icache_inv();
+}
+
+static inline int __kprobes kprobe_handler(struct pt_regs *regs)
+{
+ struct kprobe *p;
+ int ret = 0;
+ unsigned int *addr = (unsigned int *) regs->pc;
+
+ /* We're in an interrupt, but this is clear and BUG()-safe. */
+ preempt_disable();
+
+ /* Check we're not actually recursing */
+ if (kprobe_running()) {
+ /* We *are* holding lock here, so this is safe.
+ Disarm the probe we just hit, and ignore it. */
+ p = get_kprobe(addr);
+ if (p) {
+ disarm_kprobe(p, regs);
+ ret = 1;
+ } else {
+ p = current_kprobe;
+ if (p->break_handler && p->break_handler(p, regs))
+ goto ss_probe;
+ }
+ /* If it's not ours, can't be delete race, (we hold lock). */
+ goto no_kprobe;
+ }
+
+ p = get_kprobe(addr);
+ if (!p) {
+ if (*addr != BREAKPOINT_INSTRUCTION) {
+ /* The breakpoint instruction was removed right after
+ * we hit it. Another cpu has removed either a
+ * probepoint or a debugger breakpoint at this address.
+ * In either case, no further handling of this
+ * interrupt is appropriate.
+ */
+ ret = 1;
+ }
+ /* Not one of ours: let kernel handle it */
+ goto no_kprobe;
+ }
+
+ kprobe_status = KPROBE_HIT_ACTIVE;
+ current_kprobe = p;
+ if (p->pre_handler(p, regs)) {
+ /* handler has already set things up, so skip ss setup */
+ return 1;
+ }
+
+ss_probe:
+ prepare_singlestep(p, regs);
+ kprobe_status = KPROBE_HIT_SS;
+ return 1;
+
+no_kprobe:
+ preempt_enable_no_resched();
+ return ret;
+}
+
+/*
+ * Called after single-stepping. p->addr is the address of the
+ * instruction whose first byte has been replaced by the "breakpoint"
+ * instruction. To avoid the SMP problems that can occur when we
+ * temporarily put back the original opcode to single-step, we
+ * single-stepped a copy of the instruction. The address of this
+ * copy is p->ainsn.insn.
+ */
+static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
+{
+ /* we may need to fixup regs/stack after singlestepping a call insn */
+ if (current_kprobe_ss_flags & SINGLESTEP_BRANCH) {
+ regs->pc = current_kprobe_orig_pc;
+ switch (p->ainsn.insn[0]) {
+ case 0xcd: /* CALL (d16,PC) */
+ *(unsigned *) regs->sp = regs->mdr = regs->pc + 5;
+ break;
+ case 0xdd: /* CALL (d32,PC) */
+ /* fixup mdr and return address on stack */
+ *(unsigned *) regs->sp = regs->mdr = regs->pc + 7;
+ break;
+ case 0xf0:
+ if (p->ainsn.insn[1] >= 0xf0 &&
+ p->ainsn.insn[1] <= 0xf3) {
+ /* CALLS (An) */
+ /* fixup MDR and return address on stack */
+ regs->mdr = regs->pc + 2;
+ *(unsigned *) regs->sp = regs->mdr;
+ }
+ break;
+
+ case 0xfa: /* CALLS (d16,PC) */
+ /* fixup MDR and return address on stack */
+ *(unsigned *) regs->sp = regs->mdr = regs->pc + 4;
+ break;
+
+ case 0xfc: /* CALLS (d32,PC) */
+ /* fixup MDR and return address on stack */
+ *(unsigned *) regs->sp = regs->mdr = regs->pc + 6;
+ break;
+ }
+ }
+
+ regs->pc = current_kprobe_next_pc;
+ current_kprobe_bp_addr = 0;
+}
+
+static inline int __kprobes post_kprobe_handler(struct pt_regs *regs)
+{
+ if (!kprobe_running())
+ return 0;
+
+ if (current_kprobe->post_handler)
+ current_kprobe->post_handler(current_kprobe, regs, 0);
+
+ resume_execution(current_kprobe, regs);
+ reset_current_kprobe();
+ preempt_enable_no_resched();
+ return 1;
+}
+
+/* Interrupts disabled, kprobe_lock held. */
+static inline
+int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+{
+ if (current_kprobe->fault_handler &&
+ current_kprobe->fault_handler(current_kprobe, regs, trapnr))
+ return 1;
+
+ if (kprobe_status & KPROBE_HIT_SS) {
+ resume_execution(current_kprobe, regs);
+ reset_current_kprobe();
+ preempt_enable_no_resched();
+ }
+ return 0;
+}
+
+/*
+ * Wrapper routine to for handling exceptions.
+ */
+int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
+ unsigned long val, void *data)
+{
+ struct die_args *args = data;
+
+ switch (val) {
+ case DIE_BREAKPOINT:
+ if (current_kprobe_bp_addr != args->regs->pc) {
+ if (kprobe_handler(args->regs))
+ return NOTIFY_STOP;
+ } else {
+ if (post_kprobe_handler(args->regs))
+ return NOTIFY_STOP;
+ }
+ break;
+ case DIE_GPF:
+ if (kprobe_running() &&
+ kprobe_fault_handler(args->regs, args->trapnr))
+ return NOTIFY_STOP;
+ break;
+ default:
+ break;
+ }
+ return NOTIFY_DONE;
+}
+
+/* Jprobes support. */
+static struct pt_regs jprobe_saved_regs;
+static struct pt_regs *jprobe_saved_regs_location;
+static kprobe_opcode_t jprobe_saved_stack[MAX_STACK_SIZE];
+
+int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+{
+ struct jprobe *jp = container_of(p, struct jprobe, kp);
+
+ jprobe_saved_regs_location = regs;
+ memcpy(&jprobe_saved_regs, regs, sizeof(struct pt_regs));
+
+ /* Save a whole stack frame, this gets arguments
+ * pushed onto the stack after using up all the
+ * arg registers.
+ */
+ memcpy(&jprobe_saved_stack, regs + 1, sizeof(jprobe_saved_stack));
+
+ /* setup return addr to the jprobe handler routine */
+ regs->pc = (unsigned long) jp->entry;
+ return 1;
+}
+
+void __kprobes jprobe_return(void)
+{
+ void *orig_sp = jprobe_saved_regs_location + 1;
+
+ preempt_enable_no_resched();
+ asm volatile(" mov %0,sp\n"
+ ".globl jprobe_return_bp_addr\n"
+ "jprobe_return_bp_addr:\n\t"
+ " .byte 0xff\n"
+ : : "d" (orig_sp));
+}
+
+extern void jprobe_return_bp_addr(void);
+
+int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
+{
+ u8 *addr = (u8 *) regs->pc;
+
+ if (addr == (u8 *) jprobe_return_bp_addr) {
+ if (jprobe_saved_regs_location != regs) {
+ printk(KERN_ERR"JPROBE:"
+ " Current regs (%p) does not match saved regs"
+ " (%p).\n",
+ regs, jprobe_saved_regs_location);
+ BUG();
+ }
+
+ /* Restore old register state.
+ */
+ memcpy(regs, &jprobe_saved_regs, sizeof(struct pt_regs));
+
+ memcpy(regs + 1, &jprobe_saved_stack,
+ sizeof(jprobe_saved_stack));
+ return 1;
+ }
+ return 0;
+}
+
+int __init arch_init_kprobes(void)
+{
+ return 0;
+}
--- /dev/null
+/* MN10300 Kernel thread trampoline function
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by Mark Salter (msalter@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+ .text
+
+###############################################################################
+#
+# kernel_thread_helper - trampoline for kernel_thread()
+#
+# On entry:
+# A2 = address of function to call
+# D2 = function argument
+#
+###############################################################################
+ .globl kernel_thread_helper
+ .type kernel_thread_helper,@function
+kernel_thread_helper:
+ mov do_exit,d1
+ mov d1,(sp)
+ mov d1,mdr
+ mov d2,d0
+ jmp (a2)
+
+ .size kernel_thread_helper,.-kernel_thread_helper
--- /dev/null
+/* Debugging stuff for the MN10300-based processors
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
git.samba.org / sfrench / cifs-2.6.git / commitdiff