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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/159995">159995</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2013-12-03 02:28:21 -0800 (Tue, 03 Dec 2013)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge mips and arm/sh4 paths in nativeForGenerator and privateCompileCTINativeCall functions.
https://bugs.webkit.org/show_bug.cgi?id=125067
Patch by Julien Brianceau <jbriance@cisco.com> on 2013-12-03
Reviewed by Michael Saboff.
* jit/JITOpcodes32_64.cpp:
(JSC::JIT::privateCompileCTINativeCall):
* jit/ThunkGenerators.cpp:
(JSC::nativeForGenerator):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITOpcodes32_64cpp">trunk/Source/JavaScriptCore/jit/JITOpcodes32_64.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitThunkGeneratorscpp">trunk/Source/JavaScriptCore/jit/ThunkGenerators.cpp</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (159994 => 159995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2013-12-03 08:01:17 UTC (rev 159994)
+++ trunk/Source/JavaScriptCore/ChangeLog 2013-12-03 10:28:21 UTC (rev 159995)
</span><span class="lines">@@ -1,3 +1,15 @@
</span><ins>+2013-12-03 Julien Brianceau <jbriance@cisco.com>
+
+ Merge mips and arm/sh4 paths in nativeForGenerator and privateCompileCTINativeCall functions.
+ https://bugs.webkit.org/show_bug.cgi?id=125067
+
+ Reviewed by Michael Saboff.
+
+ * jit/JITOpcodes32_64.cpp:
+ (JSC::JIT::privateCompileCTINativeCall):
+ * jit/ThunkGenerators.cpp:
+ (JSC::nativeForGenerator):
+
</ins><span class="cx"> 2013-12-02 Mark Lam <mark.lam@apple.com>
</span><span class="cx">
</span><span class="cx"> Build failure when disabling JIT, YARR_JIT, and ASSEMBLER.
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITOpcodes32_64cpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITOpcodes32_64.cpp (159994 => 159995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITOpcodes32_64.cpp 2013-12-03 08:01:17 UTC (rev 159994)
+++ trunk/Source/JavaScriptCore/jit/JITOpcodes32_64.cpp 2013-12-03 10:28:21 UTC (rev 159995)
</span><span class="lines">@@ -74,7 +74,7 @@
</span><span class="cx">
</span><span class="cx"> addPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister);
</span><span class="cx">
</span><del>-#elif CPU(ARM) || CPU(SH4)
</del><ins>+#elif CPU(ARM) || CPU(SH4) || CPU(MIPS)
</ins><span class="cx"> // Load caller frame's scope chain into this callframe so that whatever we call can get to its global data.
</span><span class="cx"> emitGetCallerFrameFromCallFrameHeaderPtr(regT2);
</span><span class="cx"> emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT2);
</span><span class="lines">@@ -83,6 +83,11 @@
</span><span class="cx"> preserveReturnAddressAfterCall(regT3); // Callee preserved
</span><span class="cx"> emitPutReturnPCToCallFrameHeader(regT3);
</span><span class="cx">
</span><ins>+#if CPU(MIPS)
+ // Allocate stack space for (unused) 16 bytes (8-byte aligned) for 4 arguments.
+ subPtr(TrustedImm32(16), stackPointerRegister);
+#endif
+
</ins><span class="cx"> // Calling convention is f(argumentGPR0, argumentGPR1, ...).
</span><span class="cx"> // Host function signature is f(ExecState*).
</span><span class="cx"> move(callFrameRegister, argumentGPR0);
</span><span class="lines">@@ -94,37 +99,10 @@
</span><span class="cx"> // call the function
</span><span class="cx"> nativeCall = call();
</span><span class="cx">
</span><del>- restoreReturnAddressBeforeReturn(regT3);
-#elif CPU(MIPS)
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetCallerFrameFromCallFrameHeaderPtr(regT0);
- emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT0);
- emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
-
- preserveReturnAddressAfterCall(regT3); // Callee preserved
- emitPutReturnPCToCallFrameHeader(regT3);
-
- // Calling convention: f(a0, a1, a2, a3);
- // Host function signature: f(ExecState*);
-
- // Allocate stack space for 16 bytes (8-byte aligned)
- // 16 bytes (unused) for 4 arguments
- subPtr(TrustedImm32(16), stackPointerRegister);
-
- // Setup arg0
- move(callFrameRegister, MIPSRegisters::a0);
-
- // Call
- emitGetFromCallFrameHeaderPtr(JSStack::Callee, MIPSRegisters::a2);
- loadPtr(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
-
- // call the function
- nativeCall = call();
-
</del><ins>+#if CPU(MIPS)
</ins><span class="cx"> // Restore stack space
</span><span class="cx"> addPtr(TrustedImm32(16), stackPointerRegister);
</span><ins>+#endif
</ins><span class="cx">
</span><span class="cx"> restoreReturnAddressBeforeReturn(regT3);
</span><span class="cx"> #else
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitThunkGeneratorscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/ThunkGenerators.cpp (159994 => 159995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/ThunkGenerators.cpp 2013-12-03 08:01:17 UTC (rev 159994)
+++ trunk/Source/JavaScriptCore/jit/ThunkGenerators.cpp 2013-12-03 10:28:21 UTC (rev 159995)
</span><span class="lines">@@ -343,7 +343,7 @@
</span><span class="cx">
</span><span class="cx"> jit.restoreReturnAddressBeforeReturn(JSInterfaceJIT::regT3);
</span><span class="cx">
</span><del>-#elif CPU(ARM) || CPU(SH4)
</del><ins>+#elif CPU(ARM) || CPU(SH4) || CPU(MIPS)
</ins><span class="cx"> // Load caller frame's scope chain into this callframe so that whatever we call can get to its global data.
</span><span class="cx"> jit.emitGetCallerFrameFromCallFrameHeaderPtr(JSInterfaceJIT::regT2);
</span><span class="cx"> jit.emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, JSInterfaceJIT::regT1, JSInterfaceJIT::regT2);
</span><span class="lines">@@ -352,6 +352,11 @@
</span><span class="cx"> jit.preserveReturnAddressAfterCall(JSInterfaceJIT::regT3); // Callee preserved
</span><span class="cx"> jit.emitPutReturnPCToCallFrameHeader(JSInterfaceJIT::regT3);
</span><span class="cx">
</span><ins>+#if CPU(MIPS)
+ // Allocate stack space for (unused) 16 bytes (8-byte aligned) for 4 arguments.
+ jit.subPtr(JSInterfaceJIT::TrustedImm32(16), JSInterfaceJIT::stackPointerRegister);
+#endif
+
</ins><span class="cx"> // Calling convention is f(argumentGPR0, argumentGPR1, ...).
</span><span class="cx"> // Host function signature is f(ExecState*).
</span><span class="cx"> jit.move(JSInterfaceJIT::callFrameRegister, JSInterfaceJIT::argumentGPR0);
</span><span class="lines">@@ -361,35 +366,10 @@
</span><span class="cx"> jit.loadPtr(JSInterfaceJIT::Address(JSInterfaceJIT::argumentGPR1, JSFunction::offsetOfExecutable()), JSInterfaceJIT::regT2);
</span><span class="cx"> jit.call(JSInterfaceJIT::Address(JSInterfaceJIT::regT2, executableOffsetToFunction));
</span><span class="cx">
</span><del>- jit.restoreReturnAddressBeforeReturn(JSInterfaceJIT::regT3);
-#elif CPU(MIPS)
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- jit.emitGetCallerFrameFromCallFrameHeaderPtr(JSInterfaceJIT::regT0);
- jit.emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, JSInterfaceJIT::regT1, JSInterfaceJIT::regT0);
- jit.emitPutCellToCallFrameHeader(JSInterfaceJIT::regT1, JSStack::ScopeChain);
-
- jit.preserveReturnAddressAfterCall(JSInterfaceJIT::regT3); // Callee preserved
- jit.emitPutReturnPCToCallFrameHeader(JSInterfaceJIT::regT3);
-
- // Calling convention: f(a0, a1, a2, a3);
- // Host function signature: f(ExecState*);
-
- // Allocate stack space for 16 bytes (8-byte aligned)
- // 16 bytes (unused) for 4 arguments
- jit.subPtr(JSInterfaceJIT::TrustedImm32(16), JSInterfaceJIT::stackPointerRegister);
-
- // Setup arg0
- jit.move(JSInterfaceJIT::callFrameRegister, MIPSRegisters::a0);
-
- // Call
- jit.emitGetFromCallFrameHeaderPtr(JSStack::Callee, MIPSRegisters::a2);
- jit.loadPtr(JSInterfaceJIT::Address(MIPSRegisters::a2, JSFunction::offsetOfExecutable()), JSInterfaceJIT::regT2);
- jit.move(JSInterfaceJIT::regT0, JSInterfaceJIT::callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
- jit.call(JSInterfaceJIT::Address(JSInterfaceJIT::regT2, executableOffsetToFunction));
-
</del><ins>+#if CPU(MIPS)
</ins><span class="cx"> // Restore stack space
</span><span class="cx"> jit.addPtr(JSInterfaceJIT::TrustedImm32(16), JSInterfaceJIT::stackPointerRegister);
</span><ins>+#endif
</ins><span class="cx">
</span><span class="cx"> jit.restoreReturnAddressBeforeReturn(JSInterfaceJIT::regT3);
</span><span class="cx"> #else
</span></span></pre>
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