JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / jit / GPRInfo.h

diff --git a/jit/GPRInfo.h b/jit/GPRInfo.h
index b3711cde4b9b26ed5737085f79a16ff16240ef91..a5e301bd4810be3aeeedd209e56cda8186f31e28 100644 (file)
--- a/jit/GPRInfo.h
+++ b/jit/GPRInfo.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011, 2013, 2014 Apple Inc. All rights reserved.
+ * Copyright (C) 2011, 2013-2015 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -54,12 +54,19 @@ public:
         return JSValueRegs(gpr);
     }
     
+    static JSValueRegs withTwoAvailableRegs(GPRReg gpr, GPRReg)
+    {
+        return JSValueRegs(gpr);
+    }
+    
     bool operator!() const { return m_gpr == InvalidGPRReg; }
     
     GPRReg gpr() const { return m_gpr; }
     GPRReg tagGPR() const { return InvalidGPRReg; }
     GPRReg payloadGPR() const { return m_gpr; }
     
+    bool uses(GPRReg gpr) const { return m_gpr == gpr; }
+    
 private:
     GPRReg m_gpr;
 };
@@ -144,6 +151,11 @@ public:
     {
     }
     
+    static JSValueRegs withTwoAvailableRegs(GPRReg gpr1, GPRReg gpr2)
+    {
+        return JSValueRegs(gpr1, gpr2);
+    }
+    
     static JSValueRegs payloadOnly(GPRReg gpr)
     {
         return JSValueRegs(InvalidGPRReg, gpr);
@@ -169,6 +181,8 @@ public:
         return tagGPR();
     }
 
+    bool uses(GPRReg gpr) const { return m_tagGPR == gpr || m_payloadGPR == gpr; }
+    
 private:
     int8_t m_tagGPR;
     int8_t m_payloadGPR;
@@ -321,6 +335,12 @@ public:
         return registerForIndex[index];
     }
 
+    static GPRReg toArgumentRegister(unsigned)
+    {
+        UNREACHABLE_FOR_PLATFORM();
+        return InvalidGPRReg;
+    }
+
     static unsigned toIndex(GPRReg reg)
     {
         ASSERT(reg != InvalidGPRReg);
@@ -398,6 +418,7 @@ public:
     static const GPRReg returnValueGPR = X86Registers::eax; // regT0
     static const GPRReg returnValueGPR2 = X86Registers::edx; // regT1
     static const GPRReg nonPreservedNonReturnGPR = X86Registers::esi;
+    static const GPRReg nonPreservedNonArgumentGPR = X86Registers::r10;
     static const GPRReg patchpointScratchRegister = MacroAssembler::scratchRegister;
 
     static GPRReg toRegister(unsigned index)
@@ -492,6 +513,13 @@ public:
         return registerForIndex[index];
     }
 
+    static GPRReg toArgumentRegister(unsigned index)
+    {
+        ASSERT(index < numberOfArgumentRegisters);
+        static const GPRReg registerForIndex[numberOfArgumentRegisters] = { argumentGPR0, argumentGPR1, argumentGPR2, argumentGPR3 };
+        return registerForIndex[index];
+    }
+
     static unsigned toIndex(GPRReg reg)
     {
         ASSERT(reg != InvalidGPRReg);
@@ -573,6 +601,7 @@ public:
     static const GPRReg returnValueGPR = ARM64Registers::x0; // regT0
     static const GPRReg returnValueGPR2 = ARM64Registers::x1; // regT1
     static const GPRReg nonPreservedNonReturnGPR = ARM64Registers::x2;
+    static const GPRReg nonPreservedNonArgumentGPR = ARM64Registers::x8;
     static const GPRReg patchpointScratchRegister = ARM64Registers::ip0;
 
     // GPRReg mapping is direct, the machine regsiter numbers can
@@ -612,7 +641,7 @@ public:
 
     static const char* debugName(GPRReg reg)
     {
-        ASSERT(static_cast<unsigned>(reg) != InvalidGPRReg);
+        ASSERT(reg != InvalidGPRReg);
         ASSERT(static_cast<unsigned>(reg) < 32);
         static const char* nameForRegister[32] = {
             "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",