summaryrefslogtreecommitdiff
path: root/drivers/misc/kgdbts.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/misc/kgdbts.c')
-rw-r--r--drivers/misc/kgdbts.c30
1 files changed, 13 insertions, 17 deletions
diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index 74f16f167b8e..8cebec5e85ee 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -285,32 +285,28 @@ static void hw_break_val_write(void)
static int check_and_rewind_pc(char *put_str, char *arg)
{
unsigned long addr = lookup_addr(arg);
+ unsigned long ip;
int offset = 0;
kgdb_hex2mem(&put_str[1], (char *)kgdbts_gdb_regs,
NUMREGBYTES);
gdb_regs_to_pt_regs(kgdbts_gdb_regs, &kgdbts_regs);
- v2printk("Stopped at IP: %lx\n", instruction_pointer(&kgdbts_regs));
-#ifdef CONFIG_X86
- /* On x86 a breakpoint stop requires it to be decremented */
- if (addr + 1 == kgdbts_regs.ip)
- offset = -1;
-#elif defined(CONFIG_SUPERH)
- /* On SUPERH a breakpoint stop requires it to be decremented */
- if (addr + 2 == kgdbts_regs.pc)
- offset = -2;
+ ip = instruction_pointer(&kgdbts_regs);
+ v2printk("Stopped at IP: %lx\n", ip);
+#ifdef GDB_ADJUSTS_BREAK_OFFSET
+ /* On some arches, a breakpoint stop requires it to be decremented */
+ if (addr + BREAK_INSTR_SIZE == ip)
+ offset = -BREAK_INSTR_SIZE;
#endif
- if (strcmp(arg, "silent") &&
- instruction_pointer(&kgdbts_regs) + offset != addr) {
+ if (strcmp(arg, "silent") && ip + offset != addr) {
eprintk("kgdbts: BP mismatch %lx expected %lx\n",
- instruction_pointer(&kgdbts_regs) + offset, addr);
+ ip + offset, addr);
return 1;
}
-#ifdef CONFIG_X86
- /* On x86 adjust the instruction pointer if needed */
- kgdbts_regs.ip += offset;
-#elif defined(CONFIG_SUPERH)
- kgdbts_regs.pc += offset;
+ /* Readjust the instruction pointer if needed */
+ ip += offset;
+#ifdef GDB_ADJUSTS_BREAK_OFFSET
+ instruction_pointer_set(&kgdbts_regs, ip);
#endif
return 0;
}