diff options
| author | Jocelyn Turcotte <jocelyn.turcotte@digia.com> | 2013-02-26 13:04:28 +0000 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-03-29 13:02:40 +0100 |
| commit | fad1b063ed174a07392561c0323355115aa66992 (patch) | |
| tree | e13e43fceb11e521a5c1e16ffb05144de1544d8a /Source/JavaScriptCore/jit/JITStubs.cpp | |
| parent | f90b754393618f5eee1e44d30a7cefd5ace7e1c4 (diff) | |
| download | qtwebkit-fad1b063ed174a07392561c0323355115aa66992.tar.gz | |
Implement JIT on Windows 64 bits
https://bugs.webkit.org/show_bug.cgi?id=107965
Reviewed by Simon Hausmann.
Source/JavaScriptCore:
1. MSVC doesn't support inline assembly for 64 bits, implements the trampoline in a separate ASM file.
2. Windows 64 bits has a different calling convention than other OSes following the AMD64 ABI.
Differences that we have to handle here:
- Registers passed parameters are RCX, RDX, R8 and R9 instead of RDI, RSI, RDX, RCX, R8 and R9
- RDI and RSI must be preserved by callee
- Only return values <= 8 bytes can be returned by register (RDX can't be used to return a second word)
- There is no red-zone after RIP on the stack, but instead 4 reserved words before it
* Target.pri:
* jit/JITStubs.cpp:
* jit/JITStubs.h:
(JSC):
(JITStackFrame):
(JSC::JITStackFrame::returnAddressSlot):
* jit/JITStubsMSVC64.asm: Added.
* jit/JSInterfaceJIT.h:
(JSInterfaceJIT):
* jit/ThunkGenerators.cpp:
(JSC::nativeForGenerator):
* yarr/YarrJIT.cpp:
(YarrGenerator):
(JSC::Yarr::YarrGenerator::generateEnter):
(JSC::Yarr::YarrGenerator::generateReturn):
Source/WTF:
* wtf/Platform.h:
Change-Id: Ie1910350e36defcd427a95ceb9aa280fa61083e7
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144043 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>
Diffstat (limited to 'Source/JavaScriptCore/jit/JITStubs.cpp')
| -rw-r--r-- | Source/JavaScriptCore/jit/JITStubs.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/jit/JITStubs.cpp b/Source/JavaScriptCore/jit/JITStubs.cpp index fbef1fcb9..eca0fb079 100644 --- a/Source/JavaScriptCore/jit/JITStubs.cpp +++ b/Source/JavaScriptCore/jit/JITStubs.cpp @@ -433,6 +433,13 @@ SYMBOL_STRING(ctiOpThrowNotCaught) ":" "\n" "ret" "\n" ); +#elif COMPILER(MSVC) && CPU(X86_64) + +// These ASSERTs remind you that, if you change the layout of JITStackFrame, you +// need to change the assembly trampolines in JITStubsMSVC64.asm to match. +COMPILE_ASSERT(offsetof(struct JITStackFrame, code) % 16 == 0x0, JITStackFrame_maintains_16byte_stack_alignment); +COMPILE_ASSERT(offsetof(struct JITStackFrame, savedRBX) == 0x58, JITStackFrame_stub_argument_space_matches_ctiTrampoline); + #else #error "JIT not supported on this platform." #endif |