Repository navigation
Expand file tree
/
Copy pathLLIntData.cpp
More file actions
456 lines (403 loc) · 22.9 KB
/
Copy pathLLIntData.cpp
File metadata and controls
456 lines (403 loc) · 22.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
/*
* Copyright (C) 2011-2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "LLIntData.h"
#include "InPlaceInterpreter.h"
#include "JSCConfig.h"
#include "LLIntCLoop.h"
#include "LLIntEntrypoint.h"
#include "LLIntSlowPaths.h"
#include "LLIntThunks.h"
#include "Opcode.h"
#if PLATFORM(COCOA)
#include <wtf/cocoa/Entitlements.h>
#endif
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
namespace LLInt {
#if !HAVE(OS_SCRIPT_CONFIG_SPI)
#if COMPILER(CLANG)
// The purpose of applying this attribute is to move the os_script_config_storage away from other
// global variables, and allow the linker to pack them in more efficiently. Without this, the
// linker currently leaves multiple KBs of unused padding before this page though there are many
// other variables that come afterwards that would have fit in there. Adding this attribute was
// shown to resolve a memory regression on our small memory footprint benchmark.
#define LLINT_OPCODE_CONFIG_SECTION __attribute__((used, section("__DATA,__jsc_opcodes")))
#else
#define LLINT_OPCODE_CONFIG_SECTION
#endif
alignas(CeilingOnPageSize) uint8_t LLINT_OPCODE_CONFIG_SECTION os_script_config_storage[OpcodeConfigSizeToProtect];
#endif
static_assert(sizeof(OpcodeConfig) <= OpcodeConfigSizeToProtect);
#if !ENABLE(C_LOOP)
extern "C" void SYSV_ABI llint_entry(void*, void*, void*);
#endif // !ENABLE(C_LOOP)
#if CPU(ARM64E)
extern "C" void vmEntryToJavaScriptTrampoline(void);
extern "C" void tailCallJSEntryTrampoline(void);
extern "C" void tailCallJSEntrySlowPathTrampoline(void);
extern "C" void tailCallWithoutUntagJSEntryTrampoline(void);
extern "C" void wasmTailCallTrampoline(void);
extern "C" void exceptionHandlerTrampoline(void);
extern "C" void returnFromLLIntTrampoline(void);
#if ENABLE(WEBASSEMBLY)
extern "C" void relocate_jit_return_pc_return_location(void);
extern "C" void relocate_jit_return_pc_trampoline(void);
extern "C" void exit_implanted_slice(void);
extern "C" void get_sentinel_frame_return_pc_return_location(void);
extern "C" void get_sentinel_frame_return_pc_trampoline(void);
extern "C" void wasm_restore_frame_return(void);
JSC_ANNOTATE_JIT_OPERATION_RETURN(relocate_jit_return_pc_return_location);
JSC_ANNOTATE_JIT_OPERATION_RETURN(exit_implanted_slice);
JSC_ANNOTATE_JIT_OPERATION_RETURN(get_sentinel_frame_return_pc_return_location);
#endif // ENABLE(WEBASSEMBLY)
#endif // CPU(ARM64E)
#if ENABLE(CSS_SELECTOR_JIT) && CPU(ARM64E) && !ENABLE(C_LOOP)
extern "C" void SYSV_ABI vmEntryToCSSJITAfter(void);
JSC_ANNOTATE_JIT_OPERATION_RETURN(vmEntryToCSSJITAfter);
#endif
#if PLATFORM(COCOA)
static bool scriptingIsForbidden()
{
return processHasEntitlement("com.apple.security.script-restrictions"_s);
}
#else
static constexpr bool scriptingIsForbidden() { return false; }
#endif
void initialize()
{
#if HAVE(OS_SCRIPT_CONFIG_SPI)
// This check is provided only as a convenience best effort at helping identify when there
// is a potential SDK vs OS mismatch. The check is intentionally designed to be cheap.
auto osVersionSupports = [] (void* storageAddress) {
auto addressValue = reinterpret_cast<uintptr_t>(storageAddress);
uintptr_t pageSizeMask = vmPageSize() - 1;
if (addressValue & pageSizeMask)
return false; // os_script_config_storage should be page aligned.
#if CPU(ADDRESS64)
uintptr_t fourGigabyteBoundary = 4 * GB;
if (addressValue < fourGigabyteBoundary)
return false; // os_script_config_storage would not be positioned under 4G on a 64 bit system.
#endif
// We didn't detect an issue. So, maybe it's OK? Regardless, WTF::makePagesFreezable() will
// fail if the address is not valid.
return true;
};
// If this RELEASE_ASSERT fails, it's because you've built locally against a newer SDK
// that has the os_script_config_storage SPI, but are running on an older OS that does
// not implement the SPI. To work around this for your local build, force the #define
// of HAVE_OS_SCRIPT_CONFIG_SPI in LLIntData.h to 0.
RELEASE_ASSERT(osVersionSupports(os_script_config_storage));
#endif
WTF::makePagesFreezable(&os_script_config_storage, OpcodeConfigSizeToProtect);
if (g_jscConfig.vmEntryDisallowed || scriptingIsForbidden()) [[unlikely]] {
// FIXME: Check if we can do this in a more performant way. See rdar://158509720.
g_jscConfig.vmEntryDisallowed = true;
WTF::permanentlyFreezePages(&os_script_config_storage, OpcodeConfigSizeToProtect, WTF::FreezePagePermission::None);
return;
}
WTF::compilerFence();
#if ENABLE(C_LOOP)
CLoop::initialize();
#else // !ENABLE(C_LOOP)
static_assert(numOpcodeIDs >= 256, "nextInstruction() relies on this for bounding the dispatch");
#if CPU(ARM64E)
RELEASE_ASSERT(!g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::vmEntryToJavaScript)]);
JSC::Opcode tempOpcodeMap[numOpcodeIDs];
JSC::Opcode tempOpcodeMapWide16[numOpcodeIDs];
JSC::Opcode tempOpcodeMapWide32[numOpcodeIDs];
JSC::Opcode* opcodeMap = tempOpcodeMap;
JSC::Opcode* opcodeMapWide16 = tempOpcodeMapWide16;
JSC::Opcode* opcodeMapWide32 = tempOpcodeMapWide32;
#else
JSC::Opcode* opcodeMap = g_opcodeMap;
JSC::Opcode* opcodeMapWide16 = g_opcodeMapWide16;
JSC::Opcode* opcodeMapWide32 = g_opcodeMapWide32;
#endif
// Step 1: fill in opcodeMaps.
llint_entry(opcodeMap, opcodeMapWide16, opcodeMapWide32);
#if ENABLE(WEBASSEMBLY)
if (Options::useWasm())
IPInt::initialize();
#endif
#if CPU(ARM64E)
for (size_t i = 0; i < numOpcodeIDs; ++i) {
g_opcodeMap[i] = removeCodePtrTag(opcodeMap[i]);
g_opcodeMapWide16[i] = removeCodePtrTag(opcodeMapWide16[i]);
g_opcodeMapWide32[i] = removeCodePtrTag(opcodeMapWide32[i]);
}
#endif
// Step 2: freeze opcodeMaps.
WTF::compilerFence();
WTF::permanentlyFreezePages(&os_script_config_storage, OpcodeConfigSizeToProtect, WTF::FreezePagePermission::ReadOnly);
WTF::compilerFence();
// Step 3: verify that the opcodeMap is expected after freezing.
#if CPU(ARM64E)
for (size_t i = 0; i < numOpcodeIDs; ++i) {
uintptr_t tag = (static_cast<uintptr_t>(BytecodePtrTag) << 48) | std::bit_cast<uintptr_t>(&opcodeMap[i]);
uintptr_t tag16 = (static_cast<uintptr_t>(BytecodePtrTag) << 48) | std::bit_cast<uintptr_t>(&opcodeMapWide16[i]);
uintptr_t tag32 = (static_cast<uintptr_t>(BytecodePtrTag) << 48) | std::bit_cast<uintptr_t>(&opcodeMapWide32[i]);
RELEASE_ASSERT(g_opcodeMap[i] == __builtin_ptrauth_auth(opcodeMap[i], ptrauth_key_process_dependent_code, tag));
RELEASE_ASSERT(g_opcodeMapWide16[i] == __builtin_ptrauth_auth(opcodeMapWide16[i], ptrauth_key_process_dependent_code, tag16));
RELEASE_ASSERT(g_opcodeMapWide32[i] == __builtin_ptrauth_auth(opcodeMapWide32[i], ptrauth_key_process_dependent_code, tag32));
}
#endif
#if ENABLE(WEBASSEMBLY)
if (Options::useWasm())
IPInt::verifyInitialization();
#endif
static_assert(llint_throw_from_slow_path_trampoline < UINT8_MAX);
static_assert(maxBytecodeStructLength + 1 <= Config::exceptionInstructionsSize);
for (unsigned i = 0; i < maxBytecodeStructLength + 1; ++i)
g_jscConfig.llint.exceptionInstructions[i] = llint_throw_from_slow_path_trampoline;
JITOperationList::populatePointersInJavaScriptCoreForLLInt();
#if CPU(ARM64E)
#if ENABLE(JIT_CAGE)
if (Options::useJITCage())
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::jitCagePtr)] = jitCagePtrThunk().code().taggedPtr();
#endif
#if ENABLE(JIT)
#define INITIALIZE_JS_GATE_JIT_PATH(name, tag) \
if (Options::useJIT()) { \
codeRef8.construct(createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name)); \
codeRef16.construct(createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide16CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide16")); \
codeRef32.construct(createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide32CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide32")); \
} else
#else
#define INITIALIZE_JS_GATE_JIT_PATH(name, tag)
#endif
#define INITIALIZE_JS_GATE(name, tag) \
do { \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef8; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef16; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef32; \
INITIALIZE_JS_GATE_JIT_PATH(name, tag) { \
codeRef8.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(js_trampoline_##name)); \
codeRef16.construct(LLInt::getWide16CodeRef<NativeToJITGatePtrTag>(js_trampoline_##name)); \
codeRef32.construct(LLInt::getWide32CodeRef<NativeToJITGatePtrTag>(js_trampoline_##name)); \
} \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name)] = codeRef8.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide16)] = codeRef16.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide32)] = codeRef32.get().code().taggedPtr(); \
} while (0);
JSC_JS_GATE_OPCODES(INITIALIZE_JS_GATE)
#if ENABLE(WEBASSEMBLY)
#if ENABLE(JIT)
#define INITIALIZE_WASM_GATE_JIT_PATH(name, tag) \
if (Options::useJIT()) { \
codeRef8.construct(createWasmGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name)); \
codeRef16.construct(createWasmGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide16CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide16")); \
codeRef32.construct(createWasmGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide32CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide32")); \
} else
#else
#define INITIALIZE_WASM_GATE_JIT_PATH(name, tag)
#endif
#define INITIALIZE_WASM_GATE(name, tag) \
do { \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef8; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef16; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef32; \
INITIALIZE_WASM_GATE_JIT_PATH(name, tag) { \
codeRef8.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(wasm_trampoline_##name)); \
codeRef16.construct(LLInt::getWide16CodeRef<NativeToJITGatePtrTag>(wasm_trampoline_##name)); \
codeRef32.construct(LLInt::getWide32CodeRef<NativeToJITGatePtrTag>(wasm_trampoline_##name)); \
} \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name)] = codeRef8.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide16)] = codeRef16.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide32)] = codeRef32.get().code().taggedPtr(); \
} while (0);
JSC_WASM_GATE_OPCODES(INITIALIZE_WASM_GATE)
#endif // ENABLE(WEBASSEMBLY)
// Step 4: Initialize g_jscConfig.llint.gateMap[Gate::vmEntryToJavaScript].
// This is key to entering the interpreter.
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<VMEntryToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT()) {
auto gateCodeRef = createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(&vmEntryToJavaScriptGateAfter), JSEntryPtrTag, "vmEntryToJavaScript");
codeRef.construct(gateCodeRef.retagged<VMEntryToJITGatePtrTag>());
} else
#endif
codeRef.construct(MacroAssemblerCodeRef<VMEntryToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<VMEntryToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, VMEntryToJITGatePtrTag>(&vmEntryToJavaScriptTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::vmEntryToJavaScript)] = codeRef.get().code().taggedPtr();
}
// We want to make sure that we didn't inadvertantly authorize entry into the
// LLInt unintentionally (due to corrupted jumps that skipped the check at the
// top, or otherwise). So, verify again that we are allowed to enter the LLInt.
WTF::compilerFence();
RELEASE_ASSERT(!scriptingIsForbidden());
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT())
codeRef.construct(createTailCallGate(JSEntryPtrTag, true));
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&tailCallJSEntryTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::tailCallJSEntryPtrTag)]= codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT())
codeRef.construct(createTailCallGate(JSEntryPtrTag, true));
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&tailCallJSEntrySlowPathTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::tailCallJSEntrySlowPathPtrTag)] = codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT())
codeRef.construct(createTailCallGate(JSEntryPtrTag, false));
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&tailCallWithoutUntagJSEntryTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::tailCallWithoutUntagJSEntryPtrTag)]= codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT())
codeRef.construct(createWasmTailCallGate(WasmEntryPtrTag));
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&wasmTailCallTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmTailCallWasmEntryPtrTag)]= codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT())
codeRef.construct(createWasmTailCallGate(WasmEntryPtrTag));
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&wasmTailCallTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmIPIntTailCallWasmEntryPtrTag)]= codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT())
codeRef.construct(exceptionHandlerGateThunk());
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&exceptionHandlerTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::exceptionHandler)] = codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT)
if (Options::useJIT())
codeRef.construct(returnFromLLIntGateThunk());
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&returnFromLLIntTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::returnFromLLInt)] = codeRef.get().code().taggedPtr();
}
#if ENABLE(JIT)
if (Options::useJIT()) {
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::loopOSREntry)] = loopOSREntryGateThunk().code().taggedPtr();
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::entryOSREntry)] = entryOSREntryGateThunk().code().taggedPtr();
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmOSREntry)] = wasmOSREntryGateThunk().code().taggedPtr();
} else
#endif
{
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::loopOSREntry)] = LLInt::getCodeRef<NativeToJITGatePtrTag>(loop_osr_entry_gate).code().taggedPtr();
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::entryOSREntry)] = nullptr;
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmOSREntry)] = nullptr;
}
#if ENABLE(WEBASSEMBLY)
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJITCage() && Options::useJSPI())
codeRef.construct(relocateJITReturnPCThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(&relocate_jit_return_pc_return_location)));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&relocate_jit_return_pc_trampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::relocateJITReturnPC)] = codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJITCage() && Options::useJSPI())
codeRef.construct(exitImplantedSliceGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(&exit_implanted_slice)));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&exit_implanted_slice))));
// Store untagged so it can be signed with IB + sp for use with retab
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::exitImplantedSliceGate)] = codeRef.get().code().untaggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJITCage() && Options::useJSPI())
codeRef.construct(getSentinelFrameReturnPCGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(&get_sentinel_frame_return_pc_return_location)));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&get_sentinel_frame_return_pc_trampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::getSentinelFrameReturnPCGate)] = codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
#if ENABLE(JIT_CAGE)
if (Options::useJITCage())
codeRef.construct(wasmRestoreFrameGateThunk());
else
#endif
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&wasm_restore_frame_return))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmRestoreFrame)] = codeRef.get().code().taggedPtr();
}
#endif
#if ENABLE(JIT)
#define INITIALIZE_TAG_AND_UNTAG_THUNKS_JIT_PATH(name) \
if (Options::useJIT()) { \
tagCodeRef.construct(tagGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(name##TagGateAfter))); \
untagCodeRef.construct(untagGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(name##UntagGateAfter))); \
} else
#else
#define INITIALIZE_TAG_AND_UNTAG_THUNKS_JIT_PATH(name)
#endif
#define INITIALIZE_TAG_AND_UNTAG_THUNKS(name) \
do { \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> tagCodeRef; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> untagCodeRef; \
INITIALIZE_TAG_AND_UNTAG_THUNKS_JIT_PATH(name) { \
tagCodeRef.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(js_trampoline_##name##_tag)); \
untagCodeRef.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(js_trampoline_##name##_untag)); \
} \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##Tag)] = tagCodeRef.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##Untag)] = untagCodeRef.get().code().taggedPtr(); \
} while (0);
INITIALIZE_TAG_AND_UNTAG_THUNKS(llint_function_for_call_arity_check);
INITIALIZE_TAG_AND_UNTAG_THUNKS(llint_function_for_construct_arity_check);
#endif // CPU(ARM64E)
#endif // ENABLE(C_LOOP)
g_jscConfig.defaultCallThunk = defaultCall().code().taggedPtr();
#if ENABLE(JIT)
if (Options::useJIT())
g_jscConfig.arityFixupThunk = arityFixupThunk().code().taggedPtr();
#endif
WTF::compilerFence();
RELEASE_ASSERT(!scriptingIsForbidden());
}
} } // namespace JSC::LLInt
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END