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| author |   Richard Weinberger <richard@nod.at> | 2013-09-23 17:38:01 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2013-11-17 11:27:25 +0100 |
| commit | 9d1ee8ce92e16c6aa0a3fd91ee8ed9e403b3a2eb (patch) | |
| tree | fa38685d0c62cbc97d9016750bb18c7feac54799 /arch/x86/um/asm | |
| parent | Linux 3.12 (diff) | |
| download | linux-dev-9d1ee8ce92e16c6aa0a3fd91ee8ed9e403b3a2eb.tar.xz linux-dev-9d1ee8ce92e16c6aa0a3fd91ee8ed9e403b3a2eb.zip | |
um: Rewrite show_stack()
Currently on UML stack traces are not very reliable and both
x86 and x86_64 have their on implementations.
This patch unifies both and adds support to outline unreliable
functions calls.
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/x86/um/asm')
| -rw-r--r-- | arch/x86/um/asm/processor_32.h | 5 | ||||
| -rw-r--r-- | arch/x86/um/asm/processor_64.h | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/um/asm/processor_32.h b/arch/x86/um/asm/processor_32.h index 6c6689e574ce..c112de81c9e1 100644 --- a/arch/x86/um/asm/processor_32.h +++ b/arch/x86/um/asm/processor_32.h @@ -33,6 +33,8 @@ struct arch_thread { .faultinfo = { 0, 0, 0 } \ } +#define STACKSLOTS_PER_LINE 8 + static inline void arch_flush_thread(struct arch_thread *thread) { /* Clear any TLS still hanging */ @@ -53,4 +55,7 @@ static inline void arch_copy_thread(struct arch_thread *from, #define current_text_addr() \ ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; }) +#define current_sp() ({ void *sp; __asm__("movl %%esp, %0" : "=r" (sp) : ); sp; }) +#define current_bp() ({ unsigned long bp; __asm__("movl %%ebp, %0" : "=r" (bp) : ); bp; }) + #endif diff --git a/arch/x86/um/asm/processor_64.h b/arch/x86/um/asm/processor_64.h index 4b02a8455bd1..c3be85205a65 100644 --- a/arch/x86/um/asm/processor_64.h +++ b/arch/x86/um/asm/processor_64.h @@ -19,6 +19,8 @@ struct arch_thread { .fs = 0, \ .faultinfo = { 0, 0, 0 } } +#define STACKSLOTS_PER_LINE 4 + static inline void arch_flush_thread(struct arch_thread *thread) { } @@ -32,4 +34,7 @@ static inline void arch_copy_thread(struct arch_thread *from, #define current_text_addr() \ ({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; }) +#define current_sp() ({ void *sp; __asm__("movq %%rsp, %0" : "=r" (sp) : ); sp; }) +#define current_bp() ({ unsigned long bp; __asm__("movq %%rbp, %0" : "=r" (bp) : ); bp; }) + #endif |