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| author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-07-23 21:05:06 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-07-23 21:05:06 +0000 |
| commit | 65b8cfb2a0b6854271dbd8baf5203896223cd4ce (patch) | |
| tree | c764dacae025474940f698c79378e1e67443822e /arch | |
| parent | 64a8a3bd7498f515dc29f8fb2996c46acce0483a (diff) | |
| download | busybox-65b8cfb2a0b6854271dbd8baf5203896223cd4ce.tar.gz | |
add comment why preferred stack boundary is 4 on i386
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/i386/Makefile b/arch/i386/Makefile index 385dd52be..e6c99c67d 100644 --- a/arch/i386/Makefile +++ b/arch/i386/Makefile @@ -2,4 +2,6 @@ # Build system # ========================================================================== +# -mpreferred-stack-boundary=2 is essential in preventing gcc 4.2.x +# from aligning stack to 16 bytes. (Which is gcc's way of supporting SSE). CFLAGS += $(call cc-option,-march=i386 -mpreferred-stack-boundary=2,) |