Changeset 195134 in webkit

Timestamp:

Jan 15, 2016 10:53:40 AM (8 years ago)

Author:

commit-queue@webkit.org

Message:

[mips] Implemented emitFunctionPrologue/Epilogue
​https://bugs.webkit.org/show_bug.cgi?id=152947

Patch by Konstantin Tokarev <Konstantin Tokarev> on 2016-01-15
Reviewed by Michael Saboff.

• assembler/MacroAssemblerMIPS.h:

(JSC::MacroAssemblerMIPS::popPair):
(JSC::MacroAssemblerMIPS::pushPair):

• jit/AssemblyHelpers.h:

(JSC::AssemblyHelpers::emitFunctionPrologue):
(JSC::AssemblyHelpers::emitFunctionEpilogueWithEmptyFrame):
(JSC::AssemblyHelpers::emitFunctionEpilogue):

Location:

trunk/Source/JavaScriptCore

Files:

• ChangeLog (modified) (1 diff)
• assembler/MacroAssemblerMIPS.h (modified) (2 diffs)
• jit/AssemblyHelpers.h (modified) (1 diff)

trunk/Source/JavaScriptCore/ChangeLog

@@ +1 @@
+2016-01-15  Konstantin Tokarev  <annulen@yandex.ru>
+
+        [mips] Implemented emitFunctionPrologue/Epilogue
+        https://bugs.webkit.org/show_bug.cgi?id=152947
+
+        Reviewed by Michael Saboff.
+
+        * assembler/MacroAssemblerMIPS.h:
+        (JSC::MacroAssemblerMIPS::popPair):
+        (JSC::MacroAssemblerMIPS::pushPair):
+        * jit/AssemblyHelpers.h:
+        (JSC::AssemblyHelpers::emitFunctionPrologue):
+        (JSC::AssemblyHelpers::emitFunctionEpilogueWithEmptyFrame):
+        (JSC::AssemblyHelpers::emitFunctionEpilogue):
+
 2016-01-15  Commit Queue  <commit-queue@webkit.org>
 

trunk/Source/JavaScriptCore/assembler/MacroAssemblerMIPS.h

@@ -1254 +1254 @@
     }
 
+    void popPair(RegisterID dest1, RegisterID dest2)
+    {
+        m_assembler.lw(dest1, MIPSRegisters::sp, 0);
+        m_assembler.lw(dest2, MIPSRegisters::sp, 4);
+        m_assembler.addiu(MIPSRegisters::sp, MIPSRegisters::sp, 8);
+    }
+
     void push(RegisterID src)
     {
@@ -1270 +1277 @@
         move(imm, immTempRegister);
         push(immTempRegister);
+    }
+
+    void pushPair(RegisterID src1, RegisterID src2)
+    {
+        m_assembler.addiu(MIPSRegisters::sp, MIPSRegisters::sp, -8);
+        m_assembler.sw(src2, MIPSRegisters::sp, 4);
+        m_assembler.sw(src1, MIPSRegisters::sp, 0);
     }
 

trunk/Source/JavaScriptCore/jit/AssemblyHelpers.h

@@ -446 +446 @@
         // Prologue saves the framePointerRegister and returnAddressRegister
         return 2 * sizeof(void*);
+    }
+
+    void emitFunctionPrologue()
+    {
+        pushPair(framePointerRegister, returnAddressRegister);
+        move(stackPointerRegister, framePointerRegister);
+    }
+
+    void emitFunctionEpilogueWithEmptyFrame()
+    {
+        popPair(framePointerRegister, returnAddressRegister);
+    }
+
+    void emitFunctionEpilogue()
+    {
+        move(framePointerRegister, stackPointerRegister);
+        emitFunctionEpilogueWithEmptyFrame();
     }