webkitgtk-2.12.3webkitgtk-2.12.3

1 files changed, 313 insertions, 13 deletions

diff --git a/Source/JavaScriptCore/jit/RegisterSet.cpp b/Source/JavaScriptCore/jit/RegisterSet.cpp
index 362ada0de..5418400b0 100644
--- a/Source/JavaScriptCore/jit/RegisterSet.cpp
+++ b/Source/JavaScriptCore/jit/RegisterSet.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Apple Inc. All rights reserved.
+ * Copyright (C) 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
@@ -30,45 +30,325 @@
 
 #include "GPRInfo.h"
 #include "MacroAssembler.h"
+#include "JSCInlines.h"
+#include <wtf/CommaPrinter.h>
 
 namespace JSC {
 
 RegisterSet RegisterSet::stackRegisters()
 {
-    RegisterSet result;
-    result.set(MacroAssembler::stackPointerRegister);
-    result.set(MacroAssembler::framePointerRegister);
-    return result;
+    return RegisterSet(
+        MacroAssembler::stackPointerRegister,
+        MacroAssembler::framePointerRegister);
 }
 
-RegisterSet RegisterSet::specialRegisters()
+RegisterSet RegisterSet::reservedHardwareRegisters()
+{
+#if CPU(ARM64)
+#if PLATFORM(IOS)
+    return RegisterSet(ARM64Registers::x18, ARM64Registers::lr);
+#else
+    return RegisterSet(ARM64Registers::lr);
+#endif // PLATFORM(IOS)
+#else
+    return RegisterSet();
+#endif
+}
+
+RegisterSet RegisterSet::runtimeRegisters()
 {
-    RegisterSet result;
-    result.merge(stackRegisters());
-    result.set(GPRInfo::callFrameRegister);
 #if USE(JSVALUE64)
-    result.set(GPRInfo::tagTypeNumberRegister);
-    result.set(GPRInfo::tagMaskRegister);
+    return RegisterSet(GPRInfo::tagTypeNumberRegister, GPRInfo::tagMaskRegister);
+#else
+    return RegisterSet();
 #endif
+}
+
+RegisterSet RegisterSet::specialRegisters()
+{
+    return RegisterSet(
+        stackRegisters(), reservedHardwareRegisters(), runtimeRegisters());
+}
+
+RegisterSet RegisterSet::volatileRegistersForJSCall()
+{
+    RegisterSet volatileRegisters = allRegisters();
+    volatileRegisters.exclude(RegisterSet::stackRegisters());
+    volatileRegisters.exclude(RegisterSet::reservedHardwareRegisters());
+    volatileRegisters.exclude(RegisterSet::vmCalleeSaveRegisters());
+    return volatileRegisters;
+}
+
+RegisterSet RegisterSet::stubUnavailableRegisters()
+{
+    return RegisterSet(specialRegisters(), vmCalleeSaveRegisters());
+}
+
+RegisterSet RegisterSet::macroScratchRegisters()
+{
+#if CPU(X86_64)
+    return RegisterSet(MacroAssembler::s_scratchRegister);
+#elif CPU(ARM64)
+    return RegisterSet(MacroAssembler::dataTempRegister, MacroAssembler::memoryTempRegister);
+#elif CPU(MIPS)
+    RegisterSet result;
+    result.set(MacroAssembler::immTempRegister);
+    result.set(MacroAssembler::dataTempRegister);
+    result.set(MacroAssembler::addrTempRegister);
+    result.set(MacroAssembler::cmpTempRegister);
     return result;
+#else
+    return RegisterSet();
+#endif
 }
 
 RegisterSet RegisterSet::calleeSaveRegisters()
 {
     RegisterSet result;
-#if CPU(X86_64)
+#if CPU(X86)
+    result.set(X86Registers::ebx);
+    result.set(X86Registers::ebp);
+    result.set(X86Registers::edi);
+    result.set(X86Registers::esi);
+#elif CPU(X86_64)
     result.set(X86Registers::ebx);
     result.set(X86Registers::ebp);
     result.set(X86Registers::r12);
     result.set(X86Registers::r13);
     result.set(X86Registers::r14);
     result.set(X86Registers::r15);
+#elif CPU(ARM_THUMB2)
+    result.set(ARMRegisters::r4);
+    result.set(ARMRegisters::r5);
+    result.set(ARMRegisters::r6);
+    result.set(ARMRegisters::r8);
+#if !PLATFORM(IOS)
+    result.set(ARMRegisters::r9);
+#endif
+    result.set(ARMRegisters::r10);
+    result.set(ARMRegisters::r11);
+#elif CPU(ARM_TRADITIONAL)
+    result.set(ARMRegisters::r4);
+    result.set(ARMRegisters::r5);
+    result.set(ARMRegisters::r6);
+    result.set(ARMRegisters::r7);
+    result.set(ARMRegisters::r8);
+    result.set(ARMRegisters::r9);
+    result.set(ARMRegisters::r10);
+    result.set(ARMRegisters::r11);
+#elif CPU(ARM64)
+    // We don't include LR in the set of callee-save registers even though it technically belongs
+    // there. This is because we use this set to describe the set of registers that need to be saved
+    // beyond what you would save by the platform-agnostic "preserve return address" and "restore
+    // return address" operations in CCallHelpers.
+    for (
+        ARM64Registers::RegisterID reg = ARM64Registers::x19;
+        reg <= ARM64Registers::x28;
+        reg = static_cast<ARM64Registers::RegisterID>(reg + 1))
+        result.set(reg);
+    result.set(ARM64Registers::fp);
+    for (
+        ARM64Registers::FPRegisterID reg = ARM64Registers::q8;
+        reg <= ARM64Registers::q15;
+        reg = static_cast<ARM64Registers::FPRegisterID>(reg + 1))
+        result.set(reg);
+#elif CPU(MIPS)
+#else
+    UNREACHABLE_FOR_PLATFORM();
+#endif
+    return result;
+}
+
+RegisterSet RegisterSet::vmCalleeSaveRegisters()
+{
+    RegisterSet result;
+#if CPU(X86_64)
+    result.set(GPRInfo::regCS0);
+    result.set(GPRInfo::regCS1);
+    result.set(GPRInfo::regCS2);
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+#if OS(WINDOWS)
+    result.set(GPRInfo::regCS5);
+    result.set(GPRInfo::regCS6);
+#endif
+#elif CPU(ARM64)
+    result.set(GPRInfo::regCS0);
+    result.set(GPRInfo::regCS1);
+    result.set(GPRInfo::regCS2);
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+    result.set(GPRInfo::regCS5);
+    result.set(GPRInfo::regCS6);
+    result.set(GPRInfo::regCS7);
+    result.set(GPRInfo::regCS8);
+    result.set(GPRInfo::regCS9);
+    result.set(FPRInfo::fpRegCS0);
+    result.set(FPRInfo::fpRegCS1);
+    result.set(FPRInfo::fpRegCS2);
+    result.set(FPRInfo::fpRegCS3);
+    result.set(FPRInfo::fpRegCS4);
+    result.set(FPRInfo::fpRegCS5);
+    result.set(FPRInfo::fpRegCS6);
+    result.set(FPRInfo::fpRegCS7);
+#endif
+    return result;
+}
+
+RegisterSet RegisterSet::llintBaselineCalleeSaveRegisters()
+{
+    RegisterSet result;
+#if CPU(X86)
+#elif CPU(X86_64)
+#if !OS(WINDOWS)
+    result.set(GPRInfo::regCS2);
+    ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+#else
+    result.set(GPRInfo::regCS4);
+    ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS5);
+    result.set(GPRInfo::regCS6);
+#endif
+#elif CPU(ARM_THUMB2)
+#elif CPU(ARM_TRADITIONAL)
+#elif CPU(ARM64)
+    result.set(GPRInfo::regCS7);
+    ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS8);
+    result.set(GPRInfo::regCS9);
+#elif CPU(MIPS)
+#elif CPU(SH4)
+#else
+    UNREACHABLE_FOR_PLATFORM();
+#endif
+    return result;
+}
+
+RegisterSet RegisterSet::dfgCalleeSaveRegisters()
+{
+    RegisterSet result;
+#if CPU(X86)
+#elif CPU(X86_64)
+    result.set(GPRInfo::regCS0);
+    result.set(GPRInfo::regCS1);
+    result.set(GPRInfo::regCS2);
+#if !OS(WINDOWS)
+    ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+#else
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+    ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS5);
+    result.set(GPRInfo::regCS6);
+#endif
+#elif CPU(ARM_THUMB2)
+#elif CPU(ARM_TRADITIONAL)
+#elif CPU(ARM64)
+    ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS8);
+    result.set(GPRInfo::regCS9);
+#elif CPU(MIPS)
+#elif CPU(SH4)
+#else
+    UNREACHABLE_FOR_PLATFORM();
+#endif
+    return result;
+}
+
+RegisterSet RegisterSet::ftlCalleeSaveRegisters()
+{
+    RegisterSet result;
+#if ENABLE(FTL_JIT)
+#if CPU(X86_64) && !OS(WINDOWS)
+    result.set(GPRInfo::regCS0);
+    result.set(GPRInfo::regCS1);
+    result.set(GPRInfo::regCS2);
+    ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+#elif CPU(ARM64)
+    // B3 might save and use all ARM64 callee saves specified in the ABI.
+    result.set(GPRInfo::regCS0);
+    result.set(GPRInfo::regCS1);
+    result.set(GPRInfo::regCS2);
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+    result.set(GPRInfo::regCS5);
+    result.set(GPRInfo::regCS6);
+    result.set(GPRInfo::regCS7);
+    ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS8);
+    result.set(GPRInfo::regCS9);
+    result.set(FPRInfo::fpRegCS0);
+    result.set(FPRInfo::fpRegCS1);
+    result.set(FPRInfo::fpRegCS2);
+    result.set(FPRInfo::fpRegCS3);
+    result.set(FPRInfo::fpRegCS4);
+    result.set(FPRInfo::fpRegCS5);
+    result.set(FPRInfo::fpRegCS6);
+    result.set(FPRInfo::fpRegCS7);
 #else
     UNREACHABLE_FOR_PLATFORM();
 #endif
+#endif
     return result;
 }
 
+#if ENABLE(WEBASSEMBLY)
+RegisterSet RegisterSet::webAssemblyCalleeSaveRegisters()
+{
+    RegisterSet result;
+#if CPU(X86)
+#elif CPU(X86_64)
+#if !OS(WINDOWS)
+    ASSERT(GPRInfo::regCS3 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS4 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS3);
+    result.set(GPRInfo::regCS4);
+#else
+    ASSERT(GPRInfo::regCS5 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS6 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS5);
+    result.set(GPRInfo::regCS6);
+#endif
+#elif CPU(ARM_THUMB2)
+#elif CPU(ARM_TRADITIONAL)
+#elif CPU(ARM64)
+    ASSERT(GPRInfo::regCS8 == GPRInfo::tagTypeNumberRegister);
+    ASSERT(GPRInfo::regCS9 == GPRInfo::tagMaskRegister);
+    result.set(GPRInfo::regCS8);
+    result.set(GPRInfo::regCS9);
+#elif CPU(MIPS)
+#elif CPU(SH4)
+#else
+    UNREACHABLE_FOR_PLATFORM();
+#endif
+    return result;
+}
+#endif
+
+RegisterSet RegisterSet::registersToNotSaveForJSCall()
+{
+    return RegisterSet(RegisterSet::vmCalleeSaveRegisters(), RegisterSet::stackRegisters(), RegisterSet::reservedHardwareRegisters());
+}
+
+RegisterSet RegisterSet::registersToNotSaveForCCall()
+{
+    return RegisterSet(RegisterSet::calleeSaveRegisters(), RegisterSet::stackRegisters(), RegisterSet::reservedHardwareRegisters());
+}
+
 RegisterSet RegisterSet::allGPRs()
 {
     RegisterSet result;
@@ -93,9 +373,29 @@ RegisterSet RegisterSet::allRegisters()
     return result;
 }
 
+size_t RegisterSet::numberOfSetGPRs() const
+{
+    RegisterSet temp = *this;
+    temp.filter(allGPRs());
+    return temp.numberOfSetRegisters();
+}
+
+size_t RegisterSet::numberOfSetFPRs() const
+{
+    RegisterSet temp = *this;
+    temp.filter(allFPRs());
+    return temp.numberOfSetRegisters();
+}
+
 void RegisterSet::dump(PrintStream& out) const
 {
-    m_vector.dump(out);
+    CommaPrinter comma;
+    out.print("[");
+    for (Reg reg = Reg::first(); reg <= Reg::last(); reg = reg.next()) {
+        if (get(reg))
+            out.print(comma, reg);
+    }
+    out.print("]");
 }
 
 } // namespace JSC