diff options
| author | Michael Brown | 2007-02-01 03:17:59 +0100 |
|---|---|---|
| committer | Michael Brown | 2007-02-01 03:17:59 +0100 |
| commit | c650c8c84ac18e7403df5cc60c35db8aa80ec4fe (patch) | |
| tree | 58f7063b6bd4f37b1b879023329bde6f2bf078bf /src/arch/i386/core | |
| parent | Placeholder (diff) | |
| download | ipxe-c650c8c84ac18e7403df5cc60c35db8aa80ec4fe.tar.gz ipxe-c650c8c84ac18e7403df5cc60c35db8aa80ec4fe.tar.xz ipxe-c650c8c84ac18e7403df5cc60c35db8aa80ec4fe.zip | |
Also print out stack pointer (with optional stack dump)
Diffstat (limited to 'src/arch/i386/core')
| -rw-r--r-- | src/arch/i386/core/nulltrap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/arch/i386/core/nulltrap.c b/src/arch/i386/core/nulltrap.c index 61fe5564c..3046fbecf 100644 --- a/src/arch/i386/core/nulltrap.c +++ b/src/arch/i386/core/nulltrap.c @@ -3,6 +3,7 @@ __attribute__ (( noreturn, section ( ".text.null_trap" ) )) void null_function_trap ( void ) { + void *stack; /* 128 bytes of NOPs; the idea of this is that if something * dereferences a NULL pointer and overwrites us, we at least @@ -42,7 +43,9 @@ void null_function_trap ( void ) { __asm__ __volatile__ ( "nop ; nop ; nop ; nop" ); __asm__ __volatile__ ( "nop ; nop ; nop ; nop" ); - printf ( "NULL method called from %p\n", - __builtin_return_address ( 0 ) ); + __asm__ __volatile__ ( "movl %%esp, %0" : "=r" ( stack ) ); + printf ( "NULL method called from %p (stack %p)\n", + __builtin_return_address ( 0 ), stack ); + DBG_HD ( stack, 256 ); while ( 1 ) {} } |