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Restore rsi on x64 when probing for CPU features.

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BUG=v8:2238
TEST=

Review URL: https://chromiumcodereview.appspot.com/10801012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12126 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
yangguo@chromium.org 2012-07-18 13:02:27 +00:00
parent 6c6fb49671
commit 1726fcf010
1 changed files with 2 additions and 0 deletions
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src/x64/assembler-x64.cc
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@ -75,6 +75,7 @@ void CpuFeatures::Probe() {
// Save old rsp, since we are going to modify the stack.
__ push(rbp);
__ pushfq();
__ push(rsi);
__ push(rcx);
__ push(rbx);
__ movq(rbp, rsp);
@ -128,6 +129,7 @@ void CpuFeatures::Probe() {
__ movq(rsp, rbp);
__ pop(rbx);
__ pop(rcx);
__ pop(rsi);
__ popfq();
__ pop(rbp);
__ ret(0);