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X64: fix arguments adaptor stack check after r20751.

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BUG=
R=haitao.feng@intel.com

Review URL: https://codereview.chromium.org/239703012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20838 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
ulan@chromium.org 2014-04-17 11:30:25 +00:00
parent 39b5090f8e
commit 85cf6ce9fa
1 changed files with 2 additions and 1 deletions
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3
src/x64/builtins-x64.cc
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@ -1340,7 +1340,8 @@ static void ArgumentsAdaptorStackCheck(MacroAssembler* masm,
__ subp(rcx, rdx);
// Make rdx the space we need for the array when it is unrolled onto the
// stack.
__ PositiveSmiTimesPowerOfTwoToInteger64(rdx, rax, kPointerSizeLog2);
__ movp(rdx, rbx);
__ shlp(rdx, Immediate(kPointerSizeLog2));
// Check if the arguments will overflow the stack.
__ cmpp(rcx, rdx);
__ j(less_equal, stack_overflow); // Signed comparison.