+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M32R_ASSEMBLER_H
-#define _ASM_M32R_ASSEMBLER_H
-
-/*
- * linux/asm-m32r/assembler.h
- *
- * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org>
- *
- * This file contains M32R architecture specific macro definitions.
- */
-
-#include <linux/stringify.h>
-
-#undef __STR
-
-#ifdef __ASSEMBLY__
-#define __STR(x) x
-#else
-#define __STR(x) __stringify(x)
-#endif
-
-#ifdef CONFIG_SMP
-#define M32R_LOCK __STR(lock)
-#define M32R_UNLOCK __STR(unlock)
-#else
-#define M32R_LOCK __STR(ld)
-#define M32R_UNLOCK __STR(st)
-#endif
-
-#ifdef __ASSEMBLY__
-#undef ENTRY
-#define ENTRY(name) ENTRY_M name
- .macro ENTRY_M name
- .global \name
- ALIGN
-\name:
- .endm
-#endif
-
-
-/**
- * LDIMM - load immediate value
- * STI - enable interruption
- * CLI - disable interruption
- */
-
-#ifdef __ASSEMBLY__
-
-#define LDIMM(reg,x) LDIMM reg x
- .macro LDIMM reg x
- seth \reg, #high(\x)
- or3 \reg, \reg, #low(\x)
- .endm
-
-#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
-#define ENABLE_INTERRUPTS(reg) ENABLE_INTERRUPTS reg
- .macro ENABLE_INTERRUPTS reg
- setpsw #0x40 -> nop
- ; WORKAROUND: "-> nop" is a workaround for the M32700(TS1).
- .endm
-
-#define DISABLE_INTERRUPTS(reg) DISABLE_INTERRUPTS reg
- .macro DISABLE_INTERRUPTS reg
- clrpsw #0x40 -> nop
- ; WORKAROUND: "-> nop" is a workaround for the M32700(TS1).
- .endm
-#else /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-#define ENABLE_INTERRUPTS(reg) ENABLE_INTERRUPTS reg
- .macro ENABLE_INTERRUPTS reg
- mvfc \reg, psw
- or3 \reg, \reg, #0x0040
- mvtc \reg, psw
- .endm
-
-#define DISABLE_INTERRUPTS(reg) DISABLE_INTERRUPTS reg
- .macro DISABLE_INTERRUPTS reg
- mvfc \reg, psw
- and3 \reg, \reg, #0xffbf
- mvtc \reg, psw
- .endm
-#endif /* CONFIG_CHIP_M32102 */
-
- .macro SAVE_ALL
- push r0 ; orig_r0
- push sp ; spi (r15)
- push lr ; r14
- push r13
- mvfc r13, cr3 ; spu
- push r13
- mvfc r13, bbpc
- push r13
- mvfc r13, bbpsw
- push r13
- mvfc r13, bpc
- push r13
- mvfc r13, psw
- push r13
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
- mvfaclo r13, a1
- push r13
- mvfachi r13, a1
- push r13
- mvfaclo r13, a0
- push r13
- mvfachi r13, a0
- push r13
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
- mvfaclo r13
- push r13
- mvfachi r13
- push r13
- ldi r13, #0
- push r13 ; dummy push acc1h
- push r13 ; dummy push acc1l
-#else
-#error unknown isa configuration
-#endif
- ldi r13, #-1
- push r13 ; syscall_nr (default: -1)
- push r12
- push r11
- push r10
- push r9
- push r8
- push r7
- push r3
- push r2
- push r1
- push r0
- addi sp, #-4 ; room for implicit pt_regs parameter
- push r6
- push r5
- push r4
- .endm
-
- .macro RESTORE_ALL
- pop r4
- pop r5
- pop r6
- addi sp, #4
- pop r0
- pop r1
- pop r2
- pop r3
- pop r7
- pop r8
- pop r9
- pop r10
- pop r11
- pop r12
- addi r15, #4 ; Skip syscall number
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
- pop r13
- mvtachi r13, a0
- pop r13
- mvtaclo r13, a0
- pop r13
- mvtachi r13, a1
- pop r13
- mvtaclo r13, a1
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
- pop r13 ; dummy pop acc1h
- pop r13 ; dummy pop acc1l
- pop r13
- mvtachi r13
- pop r13
- mvtaclo r13
-#else
-#error unknown isa configuration
-#endif
- pop r14
- mvtc r14, psw
- pop r14
- mvtc r14, bpc
- addi sp, #8 ; Skip bbpsw, bbpc
- pop r14
- mvtc r14, cr3 ; spu
- pop r13
- pop lr ; r14
- pop sp ; spi (r15)
- addi sp, #4 ; Skip orig_r0
- .fillinsn
-1: rte
- .section .fixup,"ax"
-2: bl do_exit
- .previous
- .section __ex_table,"a"
- ALIGN
- .long 1b, 2b
- .previous
- .endm
-
-#define GET_CURRENT(reg) get_current reg
- .macro get_current reg
- ldi \reg, #-8192
- and \reg, sp
- .endm
-
-#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
- .macro SWITCH_TO_KERNEL_STACK
- ; switch to kernel stack (spi)
- clrpsw #0x80 -> nop
- .endm
-#else /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
- .macro SWITCH_TO_KERNEL_STACK
- push r0 ; save r0 for working
- mvfc r0, psw
- and3 r0, r0, #0x00ff7f
- mvtc r0, psw
- slli r0, #16
- bltz r0, 1f ; check BSM-bit
-;
- ;; called from kernel context: previous stack = spi
- pop r0 ; retrieve r0
- bra 2f
- .fillinsn
-1:
- ;; called from user context: previous stack = spu
- mvfc r0, cr3 ; spu
- addi r0, #4
- mvtc r0, cr3 ; spu
- ld r0, @(-4,r0) ; retrieve r0
- .fillinsn
-2:
- .endm
-#endif /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* _ASM_M32R_ASSEMBLER_H */
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