Viewing file:  pr68037-3.c (1.43 KB) -rw-r--r--
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/* { dg-do run { target i?86-*-* x86_64-*-* } } */
/* { dg-skip-if "PR81210 sp not aligned to 16 bytes" { *-*-darwin* } } */
/* { dg-options "-mgeneral-regs-only" } */
#include <stddef.h>
extern void exit (int);
typedef unsigned int uword_t __attribute__ ((mode (__word__)));
typedef int aligned __attribute__((aligned(64)));
#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;
};
int
check_int (int *i, int align)
{
*i = 20;
if ((((ptrdiff_t) i) & (align - 1)) != 0)
__builtin_abort ();
return *i;
}
__attribute__((interrupt, used))
void
fn (struct interrupt_frame *frame)
{
aligned i;
if (check_int (&i, __alignof__(i)) != i)
__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) "; \
jmp " ASMNAME ("fn"));
return 0;
}
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