The Tor Browser / file comparison
comparison: js/src/jit/RematerializedFrame.cpp
js/src/jit/RematerializedFrame.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:3c3ed4b81f9d |
|---|---|
| 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 #include "jit/RematerializedFrame.h" | |
| 8 #include "jit/IonFrames.h" | |
| 9 | |
| 10 #include "vm/ArgumentsObject.h" | |
| 11 | |
| 12 #include "jsscriptinlines.h" | |
| 13 #include "jit/IonFrames-inl.h" | |
| 14 | |
| 15 using namespace js; | |
| 16 using namespace jit; | |
| 17 | |
| 18 struct CopyValueToRematerializedFrame | |
| 19 { | |
| 20 Value *slots; | |
| 21 | |
| 22 CopyValueToRematerializedFrame(Value *slots) | |
| 23 : slots(slots) | |
| 24 { } | |
| 25 | |
| 26 void operator()(const Value &v) { | |
| 27 *slots++ = v; | |
| 28 } | |
| 29 }; | |
| 30 | |
| 31 RematerializedFrame::RematerializedFrame(JSContext *cx, uint8_t *top, InlineFrameIterator &iter) | |
| 32 : prevUpToDate_(false), | |
| 33 top_(top), | |
| 34 frameNo_(iter.frameNo()), | |
| 35 numActualArgs_(iter.numActualArgs()), | |
| 36 script_(iter.script()) | |
| 37 { | |
| 38 CopyValueToRematerializedFrame op(slots_); | |
| 39 iter.readFrameArgsAndLocals(cx, op, op, &scopeChain_, &returnValue_, | |
| 40 &argsObj_, &thisValue_, ReadFrame_Actuals); | |
| 41 } | |
| 42 | |
| 43 /* static */ RematerializedFrame * | |
| 44 RematerializedFrame::New(JSContext *cx, uint8_t *top, InlineFrameIterator &iter) | |
| 45 { | |
| 46 unsigned numFormals = iter.isFunctionFrame() ? iter.callee()->nargs() : 0; | |
| 47 size_t numBytes = sizeof(RematerializedFrame) + | |
| 48 (Max(numFormals, iter.numActualArgs()) + | |
| 49 iter.script()->nfixed()) * sizeof(Value) - | |
| 50 sizeof(Value); // 1 Value included in sizeof(RematerializedFrame) | |
| 51 | |
| 52 void *buf = cx->calloc_(numBytes); | |
| 53 if (!buf) | |
| 54 return nullptr; | |
| 55 | |
| 56 return new (buf) RematerializedFrame(cx, top, iter); | |
| 57 } | |
| 58 | |
| 59 CallObject & | |
| 60 RematerializedFrame::callObj() const | |
| 61 { | |
| 62 JS_ASSERT(hasCallObj()); | |
| 63 | |
| 64 JSObject *scope = scopeChain(); | |
| 65 while (!scope->is<CallObject>()) | |
| 66 scope = scope->enclosingScope(); | |
| 67 return scope->as<CallObject>(); | |
| 68 } | |
| 69 | |
| 70 void | |
| 71 RematerializedFrame::mark(JSTracer *trc) | |
| 72 { | |
| 73 gc::MarkScriptRoot(trc, &script_, "remat ion frame script"); | |
| 74 gc::MarkObjectRoot(trc, &scopeChain_, "remat ion frame scope chain"); | |
| 75 gc::MarkValueRoot(trc, &returnValue_, "remat ion frame return value"); | |
| 76 gc::MarkValueRoot(trc, &thisValue_, "remat ion frame this"); | |
| 77 gc::MarkValueRootRange(trc, slots_, slots_ + numActualArgs_ + script_->nfixed(), | |
| 78 "remat ion frame stack"); | |
| 79 } | |
| 80 | |
| 81 void | |
| 82 RematerializedFrame::dump() | |
| 83 { | |
| 84 fprintf(stderr, " Rematerialized Optimized Frame%s\n", inlined() ? " (inlined)" : ""); | |
| 85 if (isFunctionFrame()) { | |
| 86 fprintf(stderr, " callee fun: "); | |
| 87 #ifdef DEBUG | |
| 88 js_DumpObject(callee()); | |
| 89 #else | |
| 90 fprintf(stderr, "?\n"); | |
| 91 #endif | |
| 92 } else { | |
| 93 fprintf(stderr, " global frame, no callee\n"); | |
| 94 } | |
| 95 | |
| 96 fprintf(stderr, " file %s line %u\n", | |
| 97 script()->filename(), (unsigned) script()->lineno()); | |
| 98 | |
| 99 fprintf(stderr, " script = %p\n", (void*) script()); | |
| 100 | |
| 101 if (isFunctionFrame()) { | |
| 102 fprintf(stderr, " scope chain: "); | |
| 103 #ifdef DEBUG | |
| 104 js_DumpObject(scopeChain()); | |
| 105 #else | |
| 106 fprintf(stderr, "?\n"); | |
| 107 #endif | |
| 108 | |
| 109 if (hasArgsObj()) { | |
| 110 fprintf(stderr, " args obj: "); | |
| 111 #ifdef DEBUG | |
| 112 js_DumpObject(&argsObj()); | |
| 113 #else | |
| 114 fprintf(stderr, "?\n"); | |
| 115 #endif | |
| 116 } | |
| 117 | |
| 118 fprintf(stderr, " this: "); | |
| 119 #ifdef DEBUG | |
| 120 js_DumpValue(thisValue()); | |
| 121 #else | |
| 122 fprintf(stderr, "?\n"); | |
| 123 #endif | |
| 124 | |
| 125 for (unsigned i = 0; i < numActualArgs(); i++) { | |
| 126 if (i < numFormalArgs()) | |
| 127 fprintf(stderr, " formal (arg %d): ", i); | |
| 128 else | |
| 129 fprintf(stderr, " overflown (arg %d): ", i); | |
| 130 #ifdef DEBUG | |
| 131 js_DumpValue(argv()[i]); | |
| 132 #else | |
| 133 fprintf(stderr, "?\n"); | |
| 134 #endif | |
| 135 } | |
| 136 | |
| 137 for (unsigned i = 0; i < script()->nfixed(); i++) { | |
| 138 fprintf(stderr, " local %d: ", i); | |
| 139 #ifdef DEBUG | |
| 140 js_DumpValue(locals()[i]); | |
| 141 #else | |
| 142 fprintf(stderr, "?\n"); | |
| 143 #endif | |
| 144 } | |
| 145 } | |
| 146 | |
| 147 fputc('\n', stderr); | |
| 148 } |
