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| author | Andrew Hsieh <andrewhsieh@google.com> | 2012-05-18 15:53:35 +0800 |
|---|---|---|
| committer | Andrew Hsieh <andrewhsieh@google.com> | 2012-05-18 15:53:35 +0800 |
| commit | 112a674798c58052ddce94418e34f3e5a084ed1a (patch) | |
| tree | 7dab2511ac9d4fd4711717553aa2d6e6db1d068b /core/combo | |
| parent | feec98b139d2ca0b0164a5e178e75ce88b8f492f (diff) | |
| download | build-112a674798c58052ddce94418e34f3e5a084ed1a.zip build-112a674798c58052ddce94418e34f3e5a084ed1a.tar.gz build-112a674798c58052ddce94418e34f3e5a084ed1a.tar.bz2 | |
Add -mno-movbe to disable "movbe" instruction from code-gen
Intruction "movbe" (move data after swapping bytes) is only available in
Intel atom. Disable it for more general x86 devices and x86 hosts which
run emulator-x86. Although emulator-x86 can support "movbe", most of
the time we want to run emulator-x86 with VT support for speed (with KVM
in Linux, or HAXM in Windows/MacOSX). The presence of "movbe" can crash
emulator-x86 in VT because non-atom host doesn't have it natively.
Change-Id: I86e037900ddcb8d544f92b8d8464c8627347e560
Diffstat (limited to 'core/combo')
| -rw-r--r-- | core/combo/TARGET_linux-x86.mk | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk index a4d07b5..cb251d3 100644 --- a/core/combo/TARGET_linux-x86.mk +++ b/core/combo/TARGET_linux-x86.mk @@ -132,6 +132,11 @@ TARGET_GLOBAL_CFLAGS += -mbionic # TARGET_GLOBAL_CFLAGS += -D__ANDROID__ +# instructions "movbe" is only available in Intel atom. Disable it +# for general x86 device and x86 host which runs emulator-x86 +# +TARGET_GLOBAL_CFLAGS += -mno-movbe + # XXX: This flag is probably redundant since our toolchain binaries already # generate 32-bit machine code. It probably dates back to the old days # where we were using the host toolchain on Linux to build the platform |