diff options
| author | dfr <dfr@FreeBSD.org> | 2005-05-19 07:36:07 +0000 |
|---|---|---|
| committer | dfr <dfr@FreeBSD.org> | 2005-05-19 07:36:07 +0000 |
| commit | 62b7d28467589faf0802ddb4e3d431b8bbf1f6f2 (patch) | |
| tree | 94bc52cb93334906253b5ede919f2c252a41e61e /lib/csu | |
| parent | 46ba1c3d373e6e1207a49bb8a190091eb180ee9f (diff) | |
| download | FreeBSD-src-62b7d28467589faf0802ddb4e3d431b8bbf1f6f2.zip FreeBSD-src-62b7d28467589faf0802ddb4e3d431b8bbf1f6f2.tar.gz | |
Align the stack to a 16 byte boundary so that we can safely call functions
that use SSE. The compiler does attempt to do this in main() but not very
successfully - it still manages to use unaligned offsets from %ebp in some
cases. Also we need to have an aligned stack in case something uses SSE
via _init().
MFC After: 1 week
Diffstat (limited to 'lib/csu')
| -rw-r--r-- | lib/csu/i386-elf/crt1.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/csu/i386-elf/crt1.c b/lib/csu/i386-elf/crt1.c index 9e8acaa..c6774b0 100644 --- a/lib/csu/i386-elf/crt1.c +++ b/lib/csu/i386-elf/crt1.c @@ -78,6 +78,9 @@ _start(char *ap, ...) char **env; const char *s; +#ifdef __GNUC__ + __asm__("and $0xfffffff0,%esp"); +#endif cleanup = get_rtld_cleanup(); argv = ≈ argc = *(long *)(void *)(argv - 1); |
