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Also print out stack pointer (with optional stack dump)

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This commit is contained in:
Michael Brown 2007-02-01 02:17:59 +00:00
parent a1f021db96
commit c650c8c84a
1 changed files with 5 additions and 2 deletions
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7
src/arch/i386/core/nulltrap.c
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@ -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 ) {}
}