2009-10-16 Colin Watson <cjwatson@ubuntu.com>

	* configure.ac (TARGET_CFLAGS): Add -mno-mmx -mno-sse -mno-sse2
	-mno-3dnow on x86 architectures.  Some toolchains enable these
	features by default, but they rely on registers that aren't enabled
	in GRUB.  Thanks to Vladimir Serbinenko for the suggestion.

diff --git a/ChangeLog b/ChangeLog
index b90033393c0b0ca921eb50fe298effac55c65c0a..eb874f93e992434e16cd9bb1016e6a67b7fa9655 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-10-16  Colin Watson  <cjwatson@ubuntu.com>
+
+       * configure.ac (TARGET_CFLAGS): Add -mno-mmx -mno-sse -mno-sse2
+       -mno-3dnow on x86 architectures.  Some toolchains enable these
+       features by default, but they rely on registers that aren't enabled
+       in GRUB.  Thanks to Vladimir Serbinenko for the suggestion.
+
 2009-10-15  Robert Millan  <rmh.grub@aybabtu.com>
 
        Make entry text a bit more readable.

diff --git a/configure.ac b/configure.ac
index 9461799668af9bda561c5b32d796ddfe60fca47a..f26b92447707ba5e406db9bbcd8f74f6b049fb0c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -252,6 +252,10 @@ if test "x$TARGET_CFLAGS" = x; then
     else
       TARGET_CFLAGS="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
     fi
+
+    # Some toolchains enable these features by default, but they need
+    # registers that aren't set up properly in GRUB.
+    TARGET_CFLAGS="$TARGET_CFLAGS -mno-mmx -mno-sse -mno-sse2 -mno-3dnow"
   fi
 
   # By default, GCC 4.4 generates .eh_frame sections containing unwind