| /* Test that the ms_hook_prologue attribute generates the correct code. */ |
| |
| /* { dg-do run } */ |
| /* { dg-require-effective-target ms_hook_prologue } */ |
| /* { dg-options "-O2 -fomit-frame-pointer" } */ |
| |
| #include <stdio.h> |
| |
| int __attribute__ ((__ms_hook_prologue__)) foo () |
| { |
| unsigned char *ptr = (unsigned char *) foo; |
| |
| /* The NOP mov must not be optimized away by optimizations. |
| The push %ebp, mov %esp, %ebp must not be removed by |
| -fomit-frame-pointer */ |
| #ifndef __x86_64__ |
| /* movl.s %edi, %edi */ |
| if(*ptr++ != 0x8b) return 1; |
| if(*ptr++ != 0xff) return 1; |
| /* push %ebp */ |
| if(*ptr++ != 0x55) return 1; |
| /* movl.s %esp, %ebp */ |
| if(*ptr++ != 0x8b) return 1; |
| if(*ptr++ != 0xec) return 1; |
| #else |
| /* leaq 0(%rsp), %rsp */ |
| if (*ptr++ != 0x48) return 1; |
| if (*ptr++ != 0x8d) return 1; |
| if (*ptr++ != 0xa4) return 1; |
| if (*ptr++ != 0x24) return 1; |
| if (ptr[0] != 0 || ptr[1] != 0 || ptr[2] != 0 || ptr[3] != 0) |
| return 1; |
| #endif |
| return 0; |
| } |
| |
| unsigned int __attribute__ ((noinline, __ms_hook_prologue__)) test_func() |
| { |
| static int value; |
| |
| if (value++) puts(""); |
| |
| return 0; |
| } |
| |
| int main () |
| { |
| return foo() || test_func(); |
| } |
