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| author | Paul Mundt <lethal@linux-sh.org> | 2009-08-22 05:28:25 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-22 05:28:25 +0900 |
| commit | e115f2c17cbceee93b34d787a7a4a867fc73e7b4 (patch) | |
| tree | 6ee0f20dcb5eca29793d68e97242c5e483c24cfc /arch/sh/kernel/unwinder.c | |
| parent | c153a58e715e16ffcd6c4b3da7fc6b4a556bf917 (diff) | |
| download | blackbird-op-linux-e115f2c17cbceee93b34d787a7a4a867fc73e7b4.tar.gz blackbird-op-linux-e115f2c17cbceee93b34d787a7a4a867fc73e7b4.zip | |
sh: unwinder: Use a special bug flag for unwinder traps.
This simplifies the unwinder trap handling, dropping the use of the
special trapa vector and simply piggybacking on top of the BUG support. A
new BUGFLAG_UNWINDER is added for flagging the unwinder fault, before
continuing on with regular BUG dispatch.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/unwinder.c')
| -rw-r--r-- | arch/sh/kernel/unwinder.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/arch/sh/kernel/unwinder.c b/arch/sh/kernel/unwinder.c index e83861d9739c..468889d958f4 100644 --- a/arch/sh/kernel/unwinder.c +++ b/arch/sh/kernel/unwinder.c @@ -161,25 +161,4 @@ void unwind_stack(struct task_struct *task, struct pt_regs *regs, curr_unwinder->dump(task, regs, sp, ops, data); } - -/* - * Trap handler for UWINDER_BUG() statements. We must switch to the - * unwinder with the next highest rating. - */ -BUILD_TRAP_HANDLER(unwinder) -{ - insn_size_t insn; - TRAP_HANDLER_DECL; - - /* Rewind */ - regs->pc -= instruction_size(ctrl_inw(regs->pc - 4)); - insn = *(insn_size_t *)instruction_pointer(regs); - - /* Switch unwinders when unwind_stack() is called */ - unwinder_faulted = 1; - -#ifdef CONFIG_BUG - handle_BUG(regs); -#endif -} EXPORT_SYMBOL_GPL(unwind_stack); |
