AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity

X64 implementation: Correct kTargetAddrToReturnAddrDist value for x64.

Browse Source 
Review URL: http://codereview.chromium.org/140063

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
whesse@chromium.org 2009-06-22 14:46:33 +00:00
parent ab3d1e1a43
commit dcd25643bd
2 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/x64/assembler-x64.h
View File

@ -413,8 +413,8 @@ class Assembler : public Malloced {
static inline void set_target_address_at(Address pc, Address target);
// Distance between the address of the code target in the call instruction
// and the return address
static const int kTargetAddrToReturnAddrDist = kPointerSize;
// and the return address. Checked in the debug build.
static const int kTargetAddrToReturnAddrDist = 3 + kPointerSize;
// ---------------------------------------------------------------------------

8
src/x64/macro-assembler-x64.cc
View File

@ -337,7 +337,15 @@ void MacroAssembler::Call(Handle<Code> code_object, RelocInfo::Mode rmode) {
WriteRecordedPositions();
ASSERT(RelocInfo::IsCodeTarget(rmode));
movq(kScratchRegister, code_object, rmode);
#ifdef DEBUG
Label target;
bind(&target);
#endif
call(kScratchRegister);
#ifdef DEBUG
ASSERT_EQ(kTargetAddrToReturnAddrDist,
SizeOfCodeGeneratedSince(&target) + kPointerSize);
#endif
}