From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.target/i386/ms_hook_prologue.c | 38 ++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 gcc/testsuite/gcc.target/i386/ms_hook_prologue.c (limited to 'gcc/testsuite/gcc.target/i386/ms_hook_prologue.c') diff --git a/gcc/testsuite/gcc.target/i386/ms_hook_prologue.c b/gcc/testsuite/gcc.target/i386/ms_hook_prologue.c new file mode 100644 index 000000000..e11bcc049 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/ms_hook_prologue.c @@ -0,0 +1,38 @@ +/* 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" } */ + +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; +} + +int main () +{ + return foo(); +} -- cgit v1.2.3