Messages in this thread Patch in this message | | | From | David Howells <> | Subject | [PATCH 3/4] MN10300: Make the kernel jump into gdbstub on a BUG | Date | Tue, 19 Feb 2008 18:58:59 +0000 |
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Make the kernel jump into gdbstub (if configured) on a BUG with the register set from the BUG rather than interpolating another illegal instruction and leaving gdbstub's idea of the process counter in unsupported_syscall() where the original BUG was detected.
With this patch, gdbstub reports a SIGABRT to the compiler and reports the program counter at the original BUG, allowing the execution state at the time of the BUG to be examined with GDB.
Signed-off-by: David Howells <dhowells@redhat.com> ---
arch/mn10300/kernel/traps.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/mn10300/kernel/traps.c b/arch/mn10300/kernel/traps.c index 8b9dc6d..fcb9a03 100644 --- a/arch/mn10300/kernel/traps.c +++ b/arch/mn10300/kernel/traps.c @@ -391,7 +391,7 @@ static asmlinkage void unsupported_syscall(struct pt_regs *regs, if (code == EXCEP_SYSCALL15 && !user_mode(regs)) { if (report_bug(regs->pc, regs) == BUG_TRAP_TYPE_BUG) { #ifdef CONFIG_GDBSTUB - __gdbstub_bug_trap(); + gdbstub_intercept(regs, code); #endif } }
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