diff options
Diffstat (limited to 'gnu-efi-disable-mmx-and-sse.patch')
| -rw-r--r-- | gnu-efi-disable-mmx-and-sse.patch | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/gnu-efi-disable-mmx-and-sse.patch b/gnu-efi-disable-mmx-and-sse.patch deleted file mode 100644 index 563661bec796..000000000000 --- a/gnu-efi-disable-mmx-and-sse.patch +++ /dev/null @@ -1,53 +0,0 @@ -From d703c370c78578b63e7b5e04a3801c7f5fbf0c94 Mon Sep 17 00:00:00 2001 -From: Peter Jones <pjones@redhat.com> -Date: Fri, 31 May 2013 15:00:11 -0400 -Subject: [PATCH] Disable MMX and SSE. - -GCC 4.8.0 adds some optimizations that will use movups/movaps (and use -%xmm* registers) when they're faster, and of course that won't work at -all since UEFI firmwares aren't guaranteed to initialize the mmx/sse -instructions. - -This will be even more annoying, since most UEFI firmwares don't -initialize the #DE or #UD trap handlers, and your backtrace will be a -random path through uninitialized memory, occasionally including -whatever address the IDT has for #UD, but also addresses like "0x4" and -"0x507" that you don't normally expect to see in your call path. ---- - Make.defaults | 7 +++++-- - 1 file changed, 5 insertions(+), 2 deletions(-) - -diff --git a/Make.defaults b/Make.defaults -index 0585915..ea7513e 100644 ---- a/Make.defaults -+++ b/Make.defaults -@@ -60,7 +60,9 @@ CPPFLAGS = -DCONFIG_$(ARCH) - ifeq ($(GCCNEWENOUGH),1) - CPPFLAGS += -DGNU_EFI_USE_MS_ABI -maccumulate-outgoing-args --std=c11 - endif --CFLAGS = $(ARCH3264) -O2 -fpic -Wall -fshort-wchar -fno-strict-aliasing -fno-merge-constants -ffreestanding -fno-stack-protector -fno-stack-check -+CFLAGS = $(ARCH3264) -O2 -fpic -Wall -fshort-wchar -fno-strict-aliasing \ -+ -fno-merge-constants -ffreestanding -fno-stack-protector \ -+ -fno-stack-check - ASFLAGS = $(ARCH3264) - LDFLAGS = -nostdlib --no-undefined - INSTALL = install -@@ -78,13 +80,14 @@ ifeq ($(ARCH),ia64) - endif - - ifeq ($(ARCH), ia32) -+ CFLAGS += -mno-mmx -mno-sse - ifeq ($(HOSTARCH), x86_64) - ARCH3264 = -m32 - endif - endif - - ifeq ($(ARCH), x86_64) -- CFLAGS += -mno-red-zone -+ CFLAGS += -mno-red-zone -mno-mmx -mno-sse - ifeq ($(HOSTARCH), ia32) - ARCH3264 = -m64 - endif --- -1.8.2.1 - |