Viewing file:  pr25967-1.c (1.37 KB) -rw-r--r--
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/* { dg-do run { target i?86-*-* x86_64-*-* } } */
/* { dg-skip-if "PR81693 sp not aligned to 16 bytes" { "*-*-darwin*" } } */
/* { dg-options "-mgeneral-regs-only" } */
extern void exit (int);
typedef unsigned int uword_t __attribute__ ((mode (__word__)));
#define ERROR 0x12345670
#define IP 0x12345671
#define CS 0x12345672
#define FLAGS 0x12345673
#define SP 0x12345674
#define SS 0x12345675
#define STRING(x) XSTRING(x)
#define XSTRING(x) #x
#define ASMNAME(cname) ASMNAME2 (__USER_LABEL_PREFIX__, cname)
#define ASMNAME2(prefix, cname) XSTRING (prefix) cname
struct interrupt_frame
{
uword_t ip;
uword_t cs;
uword_t flags;
uword_t sp;
uword_t ss;
};
__attribute__((naked, used))
void
fn (void)
{
register uword_t *sp __asm__("sp");
uword_t error = *sp;
struct interrupt_frame *frame = (struct interrupt_frame *) (sp + 1);
if (ERROR != error) /* BREAK */
__builtin_abort ();
if (IP != frame->ip)
__builtin_abort ();
if (CS != frame->cs)
__builtin_abort ();
if (FLAGS != frame->flags)
__builtin_abort ();
if (SP != frame->sp)
__builtin_abort ();
if (SS != frame->ss)
__builtin_abort ();
exit (0);
}
int
main ()
{
asm ("push $" STRING (SS) "; \
push $" STRING (SP) "; \
push $" STRING (FLAGS) "; \
push $" STRING (CS) "; \
push $" STRING (IP) "; \
push $" STRING (ERROR) "; \
jmp " ASMNAME ("fn"));
return 0;
}
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