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js/src/jit/arm/CodeGenerator-arm.h@129ffea94266 (annotated)

js/src/jit/arm/CodeGenerator-arm.h

Sat, 03 Jan 2015 20:18:00 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Sat, 03 Jan 2015 20:18:00 +0100
branch
TOR_BUG_3246
changeset 7
129ffea94266
permissions
-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0 2 * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0 3 * This Source Code Form is subject to the terms of the Mozilla Public
michael@0 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 6
michael@0 7 #ifndef jit_arm_CodeGenerator_arm_h
michael@0 8 #define jit_arm_CodeGenerator_arm_h
michael@0 9
michael@0 10 #include "jit/arm/Assembler-arm.h"
michael@0 11 #include "jit/shared/CodeGenerator-shared.h"
michael@0 12
michael@0 13 namespace js {
michael@0 14 namespace jit {
michael@0 15
michael@0 16 class OutOfLineBailout;
michael@0 17 class OutOfLineTableSwitch;
michael@0 18
michael@0 19 class CodeGeneratorARM : public CodeGeneratorShared
michael@0 20 {
michael@0 21 friend class MoveResolverARM;
michael@0 22
michael@0 23 CodeGeneratorARM *thisFromCtor() {return this;}
michael@0 24
michael@0 25 protected:
michael@0 26 // Label for the common return path.
michael@0 27 NonAssertingLabel returnLabel_;
michael@0 28 NonAssertingLabel deoptLabel_;
michael@0 29 // ugh. this is not going to be pretty to move over.
michael@0 30 // stack slotted variables are not useful on arm.
michael@0 31 // it looks like this will need to return one of two types.
michael@0 32 inline Operand ToOperand(const LAllocation &a) {
michael@0 33 if (a.isGeneralReg())
michael@0 34 return Operand(a.toGeneralReg()->reg());
michael@0 35 if (a.isFloatReg())
michael@0 36 return Operand(a.toFloatReg()->reg());
michael@0 37 return Operand(StackPointer, ToStackOffset(&a));
michael@0 38 }
michael@0 39 inline Operand ToOperand(const LAllocation *a) {
michael@0 40 return ToOperand(*a);
michael@0 41 }
michael@0 42 inline Operand ToOperand(const LDefinition *def) {
michael@0 43 return ToOperand(def->output());
michael@0 44 }
michael@0 45
michael@0 46 MoveOperand toMoveOperand(const LAllocation *a) const;
michael@0 47
michael@0 48 bool bailoutIf(Assembler::Condition condition, LSnapshot *snapshot);
michael@0 49 bool bailoutFrom(Label *label, LSnapshot *snapshot);
michael@0 50 bool bailout(LSnapshot *snapshot);
michael@0 51
michael@0 52 template <typename T1, typename T2>
michael@0 53 bool bailoutCmpPtr(Assembler::Condition c, T1 lhs, T2 rhs, LSnapshot *snapshot) {
michael@0 54 masm.cmpPtr(lhs, rhs);
michael@0 55 return bailoutIf(c, snapshot);
michael@0 56 }
michael@0 57 bool bailoutTestPtr(Assembler::Condition c, Register lhs, Register rhs, LSnapshot *snapshot) {
michael@0 58 masm.testPtr(lhs, rhs);
michael@0 59 return bailoutIf(c, snapshot);
michael@0 60 }
michael@0 61 template <typename T1, typename T2>
michael@0 62 bool bailoutCmp32(Assembler::Condition c, T1 lhs, T2 rhs, LSnapshot *snapshot) {
michael@0 63 masm.cmp32(lhs, rhs);
michael@0 64 return bailoutIf(c, snapshot);
michael@0 65 }
michael@0 66 template <typename T1, typename T2>
michael@0 67 bool bailoutTest32(Assembler::Condition c, T1 lhs, T2 rhs, LSnapshot *snapshot) {
michael@0 68 masm.test32(lhs, rhs);
michael@0 69 return bailoutIf(c, snapshot);
michael@0 70 }
michael@0 71
michael@0 72 protected:
michael@0 73 bool generatePrologue();
michael@0 74 bool generateAsmJSPrologue(Label *stackOverflowLabel);
michael@0 75 bool generateEpilogue();
michael@0 76 bool generateOutOfLineCode();
michael@0 77
michael@0 78 void emitRoundDouble(const FloatRegister &src, const Register &dest, Label *fail);
michael@0 79
michael@0 80 // Emits a branch that directs control flow to the true block if |cond| is
michael@0 81 // true, and the false block if |cond| is false.
michael@0 82 void emitBranch(Assembler::Condition cond, MBasicBlock *ifTrue, MBasicBlock *ifFalse);
michael@0 83
michael@0 84 void testNullEmitBranch(Assembler::Condition cond, const ValueOperand &value,
michael@0 85 MBasicBlock *ifTrue, MBasicBlock *ifFalse)
michael@0 86 {
michael@0 87 cond = masm.testNull(cond, value);
michael@0 88 emitBranch(cond, ifTrue, ifFalse);
michael@0 89 }
michael@0 90 void testUndefinedEmitBranch(Assembler::Condition cond, const ValueOperand &value,
michael@0 91 MBasicBlock *ifTrue, MBasicBlock *ifFalse)
michael@0 92 {
michael@0 93 cond = masm.testUndefined(cond, value);
michael@0 94 emitBranch(cond, ifTrue, ifFalse);
michael@0 95 }
michael@0 96
michael@0 97 bool emitTableSwitchDispatch(MTableSwitch *mir, const Register &index, const Register &base);
michael@0 98
michael@0 99 public:
michael@0 100 // Instruction visitors.
michael@0 101 virtual bool visitMinMaxD(LMinMaxD *ins);
michael@0 102 virtual bool visitAbsD(LAbsD *ins);
michael@0 103 virtual bool visitAbsF(LAbsF *ins);
michael@0 104 virtual bool visitSqrtD(LSqrtD *ins);
michael@0 105 virtual bool visitSqrtF(LSqrtF *ins);
michael@0 106 virtual bool visitAddI(LAddI *ins);
michael@0 107 virtual bool visitSubI(LSubI *ins);
michael@0 108 virtual bool visitBitNotI(LBitNotI *ins);
michael@0 109 virtual bool visitBitOpI(LBitOpI *ins);
michael@0 110
michael@0 111 virtual bool visitMulI(LMulI *ins);
michael@0 112
michael@0 113 virtual bool visitDivI(LDivI *ins);
michael@0 114 virtual bool visitSoftDivI(LSoftDivI *ins);
michael@0 115 virtual bool visitDivPowTwoI(LDivPowTwoI *ins);
michael@0 116 virtual bool visitModI(LModI *ins);
michael@0 117 virtual bool visitSoftModI(LSoftModI *ins);
michael@0 118 virtual bool visitModPowTwoI(LModPowTwoI *ins);
michael@0 119 virtual bool visitModMaskI(LModMaskI *ins);
michael@0 120 virtual bool visitPowHalfD(LPowHalfD *ins);
michael@0 121 virtual bool visitShiftI(LShiftI *ins);
michael@0 122 virtual bool visitUrshD(LUrshD *ins);
michael@0 123
michael@0 124 virtual bool visitTestIAndBranch(LTestIAndBranch *test);
michael@0 125 virtual bool visitCompare(LCompare *comp);
michael@0 126 virtual bool visitCompareAndBranch(LCompareAndBranch *comp);
michael@0 127 virtual bool visitTestDAndBranch(LTestDAndBranch *test);
michael@0 128 virtual bool visitTestFAndBranch(LTestFAndBranch *test);
michael@0 129 virtual bool visitCompareD(LCompareD *comp);
michael@0 130 virtual bool visitCompareF(LCompareF *comp);
michael@0 131 virtual bool visitCompareDAndBranch(LCompareDAndBranch *comp);
michael@0 132 virtual bool visitCompareFAndBranch(LCompareFAndBranch *comp);
michael@0 133 virtual bool visitCompareB(LCompareB *lir);
michael@0 134 virtual bool visitCompareBAndBranch(LCompareBAndBranch *lir);
michael@0 135 virtual bool visitCompareV(LCompareV *lir);
michael@0 136 virtual bool visitCompareVAndBranch(LCompareVAndBranch *lir);
michael@0 137 virtual bool visitBitAndAndBranch(LBitAndAndBranch *baab);
michael@0 138 virtual bool visitAsmJSUInt32ToDouble(LAsmJSUInt32ToDouble *lir);
michael@0 139 virtual bool visitAsmJSUInt32ToFloat32(LAsmJSUInt32ToFloat32 *lir);
michael@0 140 virtual bool visitNotI(LNotI *ins);
michael@0 141 virtual bool visitNotD(LNotD *ins);
michael@0 142 virtual bool visitNotF(LNotF *ins);
michael@0 143
michael@0 144 virtual bool visitMathD(LMathD *math);
michael@0 145 virtual bool visitMathF(LMathF *math);
michael@0 146 virtual bool visitFloor(LFloor *lir);
michael@0 147 virtual bool visitFloorF(LFloorF *lir);
michael@0 148 virtual bool visitRound(LRound *lir);
michael@0 149 virtual bool visitRoundF(LRoundF *lir);
michael@0 150 virtual bool visitTruncateDToInt32(LTruncateDToInt32 *ins);
michael@0 151 virtual bool visitTruncateFToInt32(LTruncateFToInt32 *ins);
michael@0 152
michael@0 153 // Out of line visitors.
michael@0 154 bool visitOutOfLineBailout(OutOfLineBailout *ool);
michael@0 155 bool visitOutOfLineTableSwitch(OutOfLineTableSwitch *ool);
michael@0 156
michael@0 157 protected:
michael@0 158 ValueOperand ToValue(LInstruction *ins, size_t pos);
michael@0 159 ValueOperand ToOutValue(LInstruction *ins);
michael@0 160 ValueOperand ToTempValue(LInstruction *ins, size_t pos);
michael@0 161
michael@0 162 // Functions for LTestVAndBranch.
michael@0 163 Register splitTagForTest(const ValueOperand &value);
michael@0 164
michael@0 165 void storeElementTyped(const LAllocation *value, MIRType valueType, MIRType elementType,
michael@0 166 const Register &elements, const LAllocation *index);
michael@0 167
michael@0 168 bool divICommon(MDiv *mir, Register lhs, Register rhs, Register output, LSnapshot *snapshot,
michael@0 169 Label &done);
michael@0 170 bool modICommon(MMod *mir, Register lhs, Register rhs, Register output, LSnapshot *snapshot,
michael@0 171 Label &done);
michael@0 172
michael@0 173 public:
michael@0 174 CodeGeneratorARM(MIRGenerator *gen, LIRGraph *graph, MacroAssembler *masm);
michael@0 175
michael@0 176 public:
michael@0 177 bool visitBox(LBox *box);
michael@0 178 bool visitBoxFloatingPoint(LBoxFloatingPoint *box);
michael@0 179 bool visitUnbox(LUnbox *unbox);
michael@0 180 bool visitValue(LValue *value);
michael@0 181 bool visitDouble(LDouble *ins);
michael@0 182 bool visitFloat32(LFloat32 *ins);
michael@0 183
michael@0 184 bool visitLoadSlotV(LLoadSlotV *load);
michael@0 185 bool visitLoadSlotT(LLoadSlotT *load);
michael@0 186 bool visitStoreSlotT(LStoreSlotT *load);
michael@0 187
michael@0 188 bool visitLoadElementT(LLoadElementT *load);
michael@0 189
michael@0 190 bool visitGuardShape(LGuardShape *guard);
michael@0 191 bool visitGuardObjectType(LGuardObjectType *guard);
michael@0 192 bool visitGuardClass(LGuardClass *guard);
michael@0 193 bool visitImplicitThis(LImplicitThis *lir);
michael@0 194
michael@0 195 bool visitInterruptCheck(LInterruptCheck *lir);
michael@0 196
michael@0 197 bool visitNegI(LNegI *lir);
michael@0 198 bool visitNegD(LNegD *lir);
michael@0 199 bool visitNegF(LNegF *lir);
michael@0 200 bool visitLoadTypedArrayElementStatic(LLoadTypedArrayElementStatic *ins);
michael@0 201 bool visitStoreTypedArrayElementStatic(LStoreTypedArrayElementStatic *ins);
michael@0 202 bool visitAsmJSLoadHeap(LAsmJSLoadHeap *ins);
michael@0 203 bool visitAsmJSStoreHeap(LAsmJSStoreHeap *ins);
michael@0 204 bool visitAsmJSLoadGlobalVar(LAsmJSLoadGlobalVar *ins);
michael@0 205 bool visitAsmJSStoreGlobalVar(LAsmJSStoreGlobalVar *ins);
michael@0 206 bool visitAsmJSLoadFuncPtr(LAsmJSLoadFuncPtr *ins);
michael@0 207 bool visitAsmJSLoadFFIFunc(LAsmJSLoadFFIFunc *ins);
michael@0 208 bool visitAsmJSPassStackArg(LAsmJSPassStackArg *ins);
michael@0 209
michael@0 210 bool visitForkJoinGetSlice(LForkJoinGetSlice *ins);
michael@0 211
michael@0 212 bool generateInvalidateEpilogue();
michael@0 213 protected:
michael@0 214 void postAsmJSCall(LAsmJSCall *lir) {
michael@0 215 if (!useHardFpABI() && lir->mir()->callee().which() == MAsmJSCall::Callee::Builtin) {
michael@0 216 switch (lir->mir()->type()) {
michael@0 217 case MIRType_Double:
michael@0 218 masm.ma_vxfer(r0, r1, d0);
michael@0 219 break;
michael@0 220 case MIRType_Float32:
michael@0 221 masm.as_vxfer(r0, InvalidReg, VFPRegister(d0).singleOverlay(),
michael@0 222 Assembler::CoreToFloat);
michael@0 223 break;
michael@0 224 default:
michael@0 225 break;
michael@0 226 }
michael@0 227 }
michael@0 228 }
michael@0 229
michael@0 230 bool visitEffectiveAddress(LEffectiveAddress *ins);
michael@0 231 bool visitUDiv(LUDiv *ins);
michael@0 232 bool visitUMod(LUMod *ins);
michael@0 233 bool visitSoftUDivOrMod(LSoftUDivOrMod *ins);
michael@0 234 };
michael@0 235
michael@0 236 typedef CodeGeneratorARM CodeGeneratorSpecific;
michael@0 237
michael@0 238 // An out-of-line bailout thunk.
michael@0 239 class OutOfLineBailout : public OutOfLineCodeBase<CodeGeneratorARM>
michael@0 240 {
michael@0 241 protected: // Silence Clang warning.
michael@0 242 LSnapshot *snapshot_;
michael@0 243 uint32_t frameSize_;
michael@0 244
michael@0 245 public:
michael@0 246 OutOfLineBailout(LSnapshot *snapshot, uint32_t frameSize)
michael@0 247 : snapshot_(snapshot),
michael@0 248 frameSize_(frameSize)
michael@0 249 { }
michael@0 250
michael@0 251 bool accept(CodeGeneratorARM *codegen);
michael@0 252
michael@0 253 LSnapshot *snapshot() const {
michael@0 254 return snapshot_;
michael@0 255 }
michael@0 256 };
michael@0 257
michael@0 258 } // namespace jit
michael@0 259 } // namespace js
michael@0 260
michael@0 261 #endif /* jit_arm_CodeGenerator_arm_h */

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