The Tor Browser / file comparison
comparison: js/src/jit/BaselineCompiler.h
js/src/jit/BaselineCompiler.h
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:337fef0ae74d |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef jit_BaselineCompiler_h | |
| 8 #define jit_BaselineCompiler_h | |
| 9 | |
| 10 #ifdef JS_ION | |
| 11 | |
| 12 #include "jit/FixedList.h" | |
| 13 #if defined(JS_CODEGEN_X86) | |
| 14 # include "jit/x86/BaselineCompiler-x86.h" | |
| 15 #elif defined(JS_CODEGEN_X64) | |
| 16 # include "jit/x64/BaselineCompiler-x64.h" | |
| 17 #elif defined(JS_CODEGEN_ARM) | |
| 18 # include "jit/arm/BaselineCompiler-arm.h" | |
| 19 #elif defined(JS_CODEGEN_MIPS) | |
| 20 # include "jit/mips/BaselineCompiler-mips.h" | |
| 21 #else | |
| 22 # error "Unknown architecture!" | |
| 23 #endif | |
| 24 | |
| 25 namespace js { | |
| 26 namespace jit { | |
| 27 | |
| 28 #define OPCODE_LIST(_) \ | |
| 29 _(JSOP_NOP) \ | |
| 30 _(JSOP_LABEL) \ | |
| 31 _(JSOP_POP) \ | |
| 32 _(JSOP_POPN) \ | |
| 33 _(JSOP_DUPAT) \ | |
| 34 _(JSOP_ENTERWITH) \ | |
| 35 _(JSOP_LEAVEWITH) \ | |
| 36 _(JSOP_DUP) \ | |
| 37 _(JSOP_DUP2) \ | |
| 38 _(JSOP_SWAP) \ | |
| 39 _(JSOP_PICK) \ | |
| 40 _(JSOP_GOTO) \ | |
| 41 _(JSOP_IFEQ) \ | |
| 42 _(JSOP_IFNE) \ | |
| 43 _(JSOP_AND) \ | |
| 44 _(JSOP_OR) \ | |
| 45 _(JSOP_NOT) \ | |
| 46 _(JSOP_POS) \ | |
| 47 _(JSOP_LOOPHEAD) \ | |
| 48 _(JSOP_LOOPENTRY) \ | |
| 49 _(JSOP_VOID) \ | |
| 50 _(JSOP_UNDEFINED) \ | |
| 51 _(JSOP_HOLE) \ | |
| 52 _(JSOP_NULL) \ | |
| 53 _(JSOP_THIS) \ | |
| 54 _(JSOP_TRUE) \ | |
| 55 _(JSOP_FALSE) \ | |
| 56 _(JSOP_ZERO) \ | |
| 57 _(JSOP_ONE) \ | |
| 58 _(JSOP_INT8) \ | |
| 59 _(JSOP_INT32) \ | |
| 60 _(JSOP_UINT16) \ | |
| 61 _(JSOP_UINT24) \ | |
| 62 _(JSOP_DOUBLE) \ | |
| 63 _(JSOP_STRING) \ | |
| 64 _(JSOP_OBJECT) \ | |
| 65 _(JSOP_REGEXP) \ | |
| 66 _(JSOP_LAMBDA) \ | |
| 67 _(JSOP_LAMBDA_ARROW) \ | |
| 68 _(JSOP_BITOR) \ | |
| 69 _(JSOP_BITXOR) \ | |
| 70 _(JSOP_BITAND) \ | |
| 71 _(JSOP_LSH) \ | |
| 72 _(JSOP_RSH) \ | |
| 73 _(JSOP_URSH) \ | |
| 74 _(JSOP_ADD) \ | |
| 75 _(JSOP_SUB) \ | |
| 76 _(JSOP_MUL) \ | |
| 77 _(JSOP_DIV) \ | |
| 78 _(JSOP_MOD) \ | |
| 79 _(JSOP_LT) \ | |
| 80 _(JSOP_LE) \ | |
| 81 _(JSOP_GT) \ | |
| 82 _(JSOP_GE) \ | |
| 83 _(JSOP_EQ) \ | |
| 84 _(JSOP_NE) \ | |
| 85 _(JSOP_STRICTEQ) \ | |
| 86 _(JSOP_STRICTNE) \ | |
| 87 _(JSOP_CONDSWITCH) \ | |
| 88 _(JSOP_CASE) \ | |
| 89 _(JSOP_DEFAULT) \ | |
| 90 _(JSOP_LINENO) \ | |
| 91 _(JSOP_BITNOT) \ | |
| 92 _(JSOP_NEG) \ | |
| 93 _(JSOP_NEWARRAY) \ | |
| 94 _(JSOP_INITELEM_ARRAY) \ | |
| 95 _(JSOP_NEWOBJECT) \ | |
| 96 _(JSOP_NEWINIT) \ | |
| 97 _(JSOP_INITELEM) \ | |
| 98 _(JSOP_INITELEM_GETTER) \ | |
| 99 _(JSOP_INITELEM_SETTER) \ | |
| 100 _(JSOP_MUTATEPROTO) \ | |
| 101 _(JSOP_INITPROP) \ | |
| 102 _(JSOP_INITPROP_GETTER) \ | |
| 103 _(JSOP_INITPROP_SETTER) \ | |
| 104 _(JSOP_ENDINIT) \ | |
| 105 _(JSOP_ARRAYPUSH) \ | |
| 106 _(JSOP_GETELEM) \ | |
| 107 _(JSOP_SETELEM) \ | |
| 108 _(JSOP_CALLELEM) \ | |
| 109 _(JSOP_DELELEM) \ | |
| 110 _(JSOP_IN) \ | |
| 111 _(JSOP_GETGNAME) \ | |
| 112 _(JSOP_BINDGNAME) \ | |
| 113 _(JSOP_SETGNAME) \ | |
| 114 _(JSOP_SETNAME) \ | |
| 115 _(JSOP_GETPROP) \ | |
| 116 _(JSOP_SETPROP) \ | |
| 117 _(JSOP_CALLPROP) \ | |
| 118 _(JSOP_DELPROP) \ | |
| 119 _(JSOP_LENGTH) \ | |
| 120 _(JSOP_GETXPROP) \ | |
| 121 _(JSOP_GETALIASEDVAR) \ | |
| 122 _(JSOP_SETALIASEDVAR) \ | |
| 123 _(JSOP_NAME) \ | |
| 124 _(JSOP_BINDNAME) \ | |
| 125 _(JSOP_DELNAME) \ | |
| 126 _(JSOP_GETINTRINSIC) \ | |
| 127 _(JSOP_DEFVAR) \ | |
| 128 _(JSOP_DEFCONST) \ | |
| 129 _(JSOP_SETCONST) \ | |
| 130 _(JSOP_DEFFUN) \ | |
| 131 _(JSOP_GETLOCAL) \ | |
| 132 _(JSOP_SETLOCAL) \ | |
| 133 _(JSOP_GETARG) \ | |
| 134 _(JSOP_SETARG) \ | |
| 135 _(JSOP_CALL) \ | |
| 136 _(JSOP_FUNCALL) \ | |
| 137 _(JSOP_FUNAPPLY) \ | |
| 138 _(JSOP_NEW) \ | |
| 139 _(JSOP_EVAL) \ | |
| 140 _(JSOP_IMPLICITTHIS) \ | |
| 141 _(JSOP_INSTANCEOF) \ | |
| 142 _(JSOP_TYPEOF) \ | |
| 143 _(JSOP_TYPEOFEXPR) \ | |
| 144 _(JSOP_SETCALL) \ | |
| 145 _(JSOP_THROW) \ | |
| 146 _(JSOP_TRY) \ | |
| 147 _(JSOP_FINALLY) \ | |
| 148 _(JSOP_GOSUB) \ | |
| 149 _(JSOP_RETSUB) \ | |
| 150 _(JSOP_PUSHBLOCKSCOPE) \ | |
| 151 _(JSOP_POPBLOCKSCOPE) \ | |
| 152 _(JSOP_DEBUGLEAVEBLOCK) \ | |
| 153 _(JSOP_EXCEPTION) \ | |
| 154 _(JSOP_DEBUGGER) \ | |
| 155 _(JSOP_ARGUMENTS) \ | |
| 156 _(JSOP_RUNONCE) \ | |
| 157 _(JSOP_REST) \ | |
| 158 _(JSOP_TOID) \ | |
| 159 _(JSOP_TABLESWITCH) \ | |
| 160 _(JSOP_ITER) \ | |
| 161 _(JSOP_MOREITER) \ | |
| 162 _(JSOP_ITERNEXT) \ | |
| 163 _(JSOP_ENDITER) \ | |
| 164 _(JSOP_CALLEE) \ | |
| 165 _(JSOP_SETRVAL) \ | |
| 166 _(JSOP_RETRVAL) \ | |
| 167 _(JSOP_RETURN) | |
| 168 | |
| 169 class BaselineCompiler : public BaselineCompilerSpecific | |
| 170 { | |
| 171 FixedList<Label> labels_; | |
| 172 NonAssertingLabel return_; | |
| 173 #ifdef JSGC_GENERATIONAL | |
| 174 NonAssertingLabel postBarrierSlot_; | |
| 175 #endif | |
| 176 | |
| 177 // Native code offset right before the scope chain is initialized. | |
| 178 CodeOffsetLabel prologueOffset_; | |
| 179 | |
| 180 // Native code offset right before the frame is popped and the method | |
| 181 // returned from. | |
| 182 CodeOffsetLabel epilogueOffset_; | |
| 183 | |
| 184 // Native code offset right after debug prologue and epilogue, or | |
| 185 // equivalent positions when debug mode is off. | |
| 186 CodeOffsetLabel postDebugPrologueOffset_; | |
| 187 | |
| 188 // Whether any on stack arguments are modified. | |
| 189 bool modifiesArguments_; | |
| 190 | |
| 191 Label *labelOf(jsbytecode *pc) { | |
| 192 return &labels_[script->pcToOffset(pc)]; | |
| 193 } | |
| 194 | |
| 195 // If a script has more |nslots| than this, then emit code to do an | |
| 196 // early stack check. | |
| 197 static const unsigned EARLY_STACK_CHECK_SLOT_COUNT = 128; | |
| 198 bool needsEarlyStackCheck() const { | |
| 199 return script->nslots() > EARLY_STACK_CHECK_SLOT_COUNT; | |
| 200 } | |
| 201 | |
| 202 public: | |
| 203 BaselineCompiler(JSContext *cx, TempAllocator &alloc, JSScript *script); | |
| 204 bool init(); | |
| 205 | |
| 206 MethodStatus compile(); | |
| 207 | |
| 208 private: | |
| 209 MethodStatus emitBody(); | |
| 210 | |
| 211 bool emitPrologue(); | |
| 212 bool emitEpilogue(); | |
| 213 #ifdef JSGC_GENERATIONAL | |
| 214 bool emitOutOfLinePostBarrierSlot(); | |
| 215 #endif | |
| 216 bool emitIC(ICStub *stub, ICEntry::Kind kind); | |
| 217 bool emitOpIC(ICStub *stub) { | |
| 218 return emitIC(stub, ICEntry::Kind_Op); | |
| 219 } | |
| 220 bool emitNonOpIC(ICStub *stub) { | |
| 221 return emitIC(stub, ICEntry::Kind_NonOp); | |
| 222 } | |
| 223 | |
| 224 bool emitStackCheck(bool earlyCheck=false); | |
| 225 bool emitInterruptCheck(); | |
| 226 bool emitUseCountIncrement(bool allowOsr=true); | |
| 227 bool emitArgumentTypeChecks(); | |
| 228 bool emitDebugPrologue(); | |
| 229 bool emitDebugTrap(); | |
| 230 bool emitSPSPush(); | |
| 231 void emitSPSPop(); | |
| 232 | |
| 233 bool initScopeChain(); | |
| 234 | |
| 235 void storeValue(const StackValue *source, const Address &dest, | |
| 236 const ValueOperand &scratch); | |
| 237 | |
| 238 #define EMIT_OP(op) bool emit_##op(); | |
| 239 OPCODE_LIST(EMIT_OP) | |
| 240 #undef EMIT_OP | |
| 241 | |
| 242 // JSOP_NEG, JSOP_BITNOT | |
| 243 bool emitUnaryArith(); | |
| 244 | |
| 245 // JSOP_BITXOR, JSOP_LSH, JSOP_ADD etc. | |
| 246 bool emitBinaryArith(); | |
| 247 | |
| 248 // Handles JSOP_LT, JSOP_GT, and friends | |
| 249 bool emitCompare(); | |
| 250 | |
| 251 bool emitReturn(); | |
| 252 | |
| 253 bool emitToBoolean(); | |
| 254 bool emitTest(bool branchIfTrue); | |
| 255 bool emitAndOr(bool branchIfTrue); | |
| 256 bool emitCall(); | |
| 257 | |
| 258 bool emitInitPropGetterSetter(); | |
| 259 bool emitInitElemGetterSetter(); | |
| 260 | |
| 261 bool emitFormalArgAccess(uint32_t arg, bool get); | |
| 262 | |
| 263 bool addPCMappingEntry(bool addIndexEntry); | |
| 264 | |
| 265 void getScopeCoordinateObject(Register reg); | |
| 266 Address getScopeCoordinateAddressFromObject(Register objReg, Register reg); | |
| 267 Address getScopeCoordinateAddress(Register reg); | |
| 268 }; | |
| 269 | |
| 270 } // namespace jit | |
| 271 } // namespace js | |
| 272 | |
| 273 #endif // JS_ION | |
| 274 | |
| 275 #endif /* jit_BaselineCompiler_h */ |
