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Diffstat (limited to 'arch/sparc/kernel/kgdb.c')
-rw-r--r--arch/sparc/kernel/kgdb.c164
1 files changed, 0 insertions, 164 deletions
diff --git a/arch/sparc/kernel/kgdb.c b/arch/sparc/kernel/kgdb.c
deleted file mode 100644
index 757805ce02e..00000000000
--- a/arch/sparc/kernel/kgdb.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/* kgdb.c: KGDB support for 32-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>
-
-extern unsigned long trapbase;
-
-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];
- 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_F31; i++)
- gdb_regs[i] = 0;
-
- gdb_regs[GDB_Y] = regs->y;
- gdb_regs[GDB_PSR] = regs->psr;
- gdb_regs[GDB_WIM] = 0;
- gdb_regs[GDB_TBR] = (unsigned long) &trapbase;
- gdb_regs[GDB_PC] = regs->pc;
- gdb_regs[GDB_NPC] = regs->npc;
- gdb_regs[GDB_FSR] = 0;
- gdb_regs[GDB_CSR] = 0;
-}
-
-void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
-{
- struct thread_info *t = task_thread_info(p);
- struct reg_window *win;
- 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] = 0;
- 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;
- 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_F31; i++)
- gdb_regs[i] = 0;
-
- gdb_regs[GDB_Y] = 0;
-
- gdb_regs[GDB_PSR] = t->kpsr;
- gdb_regs[GDB_WIM] = t->kwim;
- gdb_regs[GDB_TBR] = (unsigned long) &trapbase;
- gdb_regs[GDB_PC] = t->kpc;
- gdb_regs[GDB_NPC] = t->kpc + 4;
- gdb_regs[GDB_FSR] = 0;
- gdb_regs[GDB_CSR] = 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 PSR register is changing, we have to preserve
- * the CWP field, otherwise window save/restore explodes.
- */
- if (regs->psr != gdb_regs[GDB_PSR]) {
- unsigned long cwp = regs->psr & PSR_CWP;
-
- regs->psr = (gdb_regs[GDB_PSR] & ~PSR_CWP) | cwp;
- }
-
- regs->pc = gdb_regs[GDB_PC];
- regs->npc = gdb_regs[GDB_NPC];
- regs->y = gdb_regs[GDB_Y];
-
- win = (struct reg_window *) regs->u_regs[UREG_FP];
- 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];
-}
-
-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->pc = addr;
- linux_regs->npc = addr + 4;
- }
- /* fallthru */
-
- case 'D':
- case 'k':
- if (linux_regs->pc == (unsigned long) arch_kgdb_breakpoint) {
- linux_regs->pc = linux_regs->npc;
- linux_regs->npc += 4;
- }
- return 0;
- }
- return -1;
-}
-
-extern void do_hw_interrupt(struct pt_regs *regs, unsigned long type);
-
-asmlinkage void kgdb_trap(struct pt_regs *regs)
-{
- unsigned long flags;
-
- if (user_mode(regs)) {
- do_hw_interrupt(regs, 0xfd);
- 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 0x7d */
- .gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x7d },
-};