sparc,sparc64: unify kernel/

[sfrench/cifs-2.6.git] / arch / sparc64 / kernel / kgdb.c

diff --git a/arch/sparc64/kernel/kgdb.c b/arch/sparc64/kernel/kgdb.c
deleted file mode 100644 (file)
index fefbe6d..0000000
--- a/arch/sparc64/kernel/kgdb.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/* kgdb.c: KGDB support for 64-bit sparc.
- *
- * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
- */
-
-#include <linux/kgdb.h>
-#include <linux/kdebug.h>
-
-#include <asm/kdebug.h>
-#include <asm/ptrace.h>
-#include <asm/irq.h>
-
-void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
-{
-       struct reg_window *win;
-       int i;
-
-       gdb_regs[GDB_G0] = 0;
-       for (i = 0; i < 15; i++)
-               gdb_regs[GDB_G1 + i] = regs->u_regs[UREG_G1 + i];
-
-       win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
-       for (i = 0; i < 8; i++)
-               gdb_regs[GDB_L0 + i] = win->locals[i];
-       for (i = 0; i < 8; i++)
-               gdb_regs[GDB_I0 + i] = win->ins[i];
-
-       for (i = GDB_F0; i <= GDB_F62; i++)
-               gdb_regs[i] = 0;
-
-       gdb_regs[GDB_PC] = regs->tpc;
-       gdb_regs[GDB_NPC] = regs->tnpc;
-       gdb_regs[GDB_STATE] = regs->tstate;
-       gdb_regs[GDB_FSR] = 0;
-       gdb_regs[GDB_FPRS] = 0;
-       gdb_regs[GDB_Y] = regs->y;
-}
-
-void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
-{
-       struct thread_info *t = task_thread_info(p);
-       extern unsigned int switch_to_pc;
-       extern unsigned int ret_from_syscall;
-       struct reg_window *win;
-       unsigned long pc, cwp;
-       int i;
-
-       for (i = GDB_G0; i < GDB_G6; i++)
-               gdb_regs[i] = 0;
-       gdb_regs[GDB_G6] = (unsigned long) t;
-       gdb_regs[GDB_G7] = (unsigned long) p;
-       for (i = GDB_O0; i < GDB_SP; i++)
-               gdb_regs[i] = 0;
-       gdb_regs[GDB_SP] = t->ksp;
-       gdb_regs[GDB_O7] = 0;
-
-       win = (struct reg_window *) (t->ksp + STACK_BIAS);
-       for (i = 0; i < 8; i++)
-               gdb_regs[GDB_L0 + i] = win->locals[i];
-       for (i = 0; i < 8; i++)
-               gdb_regs[GDB_I0 + i] = win->ins[i];
-
-       for (i = GDB_F0; i <= GDB_F62; i++)
-               gdb_regs[i] = 0;
-
-       if (t->new_child)
-               pc = (unsigned long) &ret_from_syscall;
-       else
-               pc = (unsigned long) &switch_to_pc;
-
-       gdb_regs[GDB_PC] = pc;
-       gdb_regs[GDB_NPC] = pc + 4;
-
-       cwp = __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP];
-
-       gdb_regs[GDB_STATE] = (TSTATE_PRIV | TSTATE_IE | cwp);
-       gdb_regs[GDB_FSR] = 0;
-       gdb_regs[GDB_FPRS] = 0;
-       gdb_regs[GDB_Y] = 0;
-}
-
-void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
-{
-       struct reg_window *win;
-       int i;
-
-       for (i = 0; i < 15; i++)
-               regs->u_regs[UREG_G1 + i] = gdb_regs[GDB_G1 + i];
-
-       /* If the TSTATE register is changing, we have to preserve
-        * the CWP field, otherwise window save/restore explodes.
-        */
-       if (regs->tstate != gdb_regs[GDB_STATE]) {
-               unsigned long cwp = regs->tstate & TSTATE_CWP;
-
-               regs->tstate = (gdb_regs[GDB_STATE] & ~TSTATE_CWP) | cwp;
-       }
-
-       regs->tpc = gdb_regs[GDB_PC];
-       regs->tnpc = gdb_regs[GDB_NPC];
-       regs->y = gdb_regs[GDB_Y];
-
-       win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
-       for (i = 0; i < 8; i++)
-               win->locals[i] = gdb_regs[GDB_L0 + i];
-       for (i = 0; i < 8; i++)
-               win->ins[i] = gdb_regs[GDB_I0 + i];
-}
-
-#ifdef CONFIG_SMP
-void smp_kgdb_capture_client(struct pt_regs *regs)
-{
-       unsigned long flags;
-
-       __asm__ __volatile__("rdpr      %%pstate, %0\n\t"
-                            "wrpr      %0, %1, %%pstate"
-                            : "=r" (flags)
-                            : "i" (PSTATE_IE));
-
-       flushw_all();
-
-       if (atomic_read(&kgdb_active) != -1)
-               kgdb_nmicallback(raw_smp_processor_id(), regs);
-
-       __asm__ __volatile__("wrpr      %0, 0, %%pstate"
-                            : : "r" (flags));
-}
-#endif
-
-int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
-                              char *remcomInBuffer, char *remcomOutBuffer,
-                              struct pt_regs *linux_regs)
-{
-       unsigned long addr;
-       char *ptr;
-
-       switch (remcomInBuffer[0]) {
-       case 'c':
-               /* try to read optional parameter, pc unchanged if no parm */
-               ptr = &remcomInBuffer[1];
-               if (kgdb_hex2long(&ptr, &addr)) {
-                       linux_regs->tpc = addr;
-                       linux_regs->tnpc = addr + 4;
-               }
-               /* fallthru */
-
-       case 'D':
-       case 'k':
-               if (linux_regs->tpc == (unsigned long) arch_kgdb_breakpoint) {
-                       linux_regs->tpc = linux_regs->tnpc;
-                       linux_regs->tnpc += 4;
-               }
-               return 0;
-       }
-       return -1;
-}
-
-asmlinkage void kgdb_trap(unsigned long trap_level, struct pt_regs *regs)
-{
-       unsigned long flags;
-
-       if (user_mode(regs)) {
-               bad_trap(regs, trap_level);
-               return;
-       }
-
-       flushw_all();
-
-       local_irq_save(flags);
-       kgdb_handle_exception(0x172, SIGTRAP, 0, regs);
-       local_irq_restore(flags);
-}
-
-int kgdb_arch_init(void)
-{
-       return 0;
-}
-
-void kgdb_arch_exit(void)
-{
-}
-
-struct kgdb_arch arch_kgdb_ops = {
-       /* Breakpoint instruction: ta 0x72 */
-       .gdb_bpt_instr          = { 0x91, 0xd0, 0x20, 0x72 },
-};