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Issue 10832342: Rename "global context" to "native context", (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 4 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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1344 ASSERT(!scratch.is(ip)); 1344 ASSERT(!scratch.is(ip));
1345 1345
1346 // Load current lexical context from the stack frame. 1346 // Load current lexical context from the stack frame.
1347 ldr(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset)); 1347 ldr(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset));
1348 // In debug mode, make sure the lexical context is set. 1348 // In debug mode, make sure the lexical context is set.
1349 #ifdef DEBUG 1349 #ifdef DEBUG
1350 cmp(scratch, Operand(0, RelocInfo::NONE)); 1350 cmp(scratch, Operand(0, RelocInfo::NONE));
1351 Check(ne, "we should not have an empty lexical context"); 1351 Check(ne, "we should not have an empty lexical context");
1352 #endif 1352 #endif
1353 1353
1354 // Load the global context of the current context. 1354 // Load the native context of the current context.
1355 int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; 1355 int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize;
1356 ldr(scratch, FieldMemOperand(scratch, offset)); 1356 ldr(scratch, FieldMemOperand(scratch, offset));
1357 ldr(scratch, FieldMemOperand(scratch, GlobalObject::kGlobalContextOffset)); 1357 ldr(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset));
1358 1358
1359 // Check the context is a global context. 1359 // Check the context is a native context.
1360 if (emit_debug_code()) { 1360 if (emit_debug_code()) {
1361 // TODO(119): avoid push(holder_reg)/pop(holder_reg) 1361 // TODO(119): avoid push(holder_reg)/pop(holder_reg)
1362 // Cannot use ip as a temporary in this verification code. Due to the fact 1362 // Cannot use ip as a temporary in this verification code. Due to the fact
1363 // that ip is clobbered as part of cmp with an object Operand. 1363 // that ip is clobbered as part of cmp with an object Operand.
1364 push(holder_reg); // Temporarily save holder on the stack. 1364 push(holder_reg); // Temporarily save holder on the stack.
1365 // Read the first word and compare to the global_context_map. 1365 // Read the first word and compare to the native_context_map.
1366 ldr(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); 1366 ldr(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset));
1367 LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 1367 LoadRoot(ip, Heap::kNativeContextMapRootIndex);
1368 cmp(holder_reg, ip); 1368 cmp(holder_reg, ip);
1369 Check(eq, "JSGlobalObject::global_context should be a global context."); 1369 Check(eq, "JSGlobalObject::native_context should be a native context.");
1370 pop(holder_reg); // Restore holder. 1370 pop(holder_reg); // Restore holder.
1371 } 1371 }
1372 1372
1373 // Check if both contexts are the same. 1373 // Check if both contexts are the same.
1374 ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 1374 ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset));
1375 cmp(scratch, Operand(ip)); 1375 cmp(scratch, Operand(ip));
1376 b(eq, &same_contexts); 1376 b(eq, &same_contexts);
1377 1377
1378 // Check the context is a global context. 1378 // Check the context is a native context.
1379 if (emit_debug_code()) { 1379 if (emit_debug_code()) {
1380 // TODO(119): avoid push(holder_reg)/pop(holder_reg) 1380 // TODO(119): avoid push(holder_reg)/pop(holder_reg)
1381 // Cannot use ip as a temporary in this verification code. Due to the fact 1381 // Cannot use ip as a temporary in this verification code. Due to the fact
1382 // that ip is clobbered as part of cmp with an object Operand. 1382 // that ip is clobbered as part of cmp with an object Operand.
1383 push(holder_reg); // Temporarily save holder on the stack. 1383 push(holder_reg); // Temporarily save holder on the stack.
1384 mov(holder_reg, ip); // Move ip to its holding place. 1384 mov(holder_reg, ip); // Move ip to its holding place.
1385 LoadRoot(ip, Heap::kNullValueRootIndex); 1385 LoadRoot(ip, Heap::kNullValueRootIndex);
1386 cmp(holder_reg, ip); 1386 cmp(holder_reg, ip);
1387 Check(ne, "JSGlobalProxy::context() should not be null."); 1387 Check(ne, "JSGlobalProxy::context() should not be null.");
1388 1388
1389 ldr(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); 1389 ldr(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset));
1390 LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 1390 LoadRoot(ip, Heap::kNativeContextMapRootIndex);
1391 cmp(holder_reg, ip); 1391 cmp(holder_reg, ip);
1392 Check(eq, "JSGlobalObject::global_context should be a global context."); 1392 Check(eq, "JSGlobalObject::native_context should be a native context.");
1393 // Restore ip is not needed. ip is reloaded below. 1393 // Restore ip is not needed. ip is reloaded below.
1394 pop(holder_reg); // Restore holder. 1394 pop(holder_reg); // Restore holder.
1395 // Restore ip to holder's context. 1395 // Restore ip to holder's context.
1396 ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 1396 ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset));
1397 } 1397 }
1398 1398
1399 // Check that the security token in the calling global object is 1399 // Check that the security token in the calling global object is
1400 // compatible with the security token in the receiving global 1400 // compatible with the security token in the receiving global
1401 // object. 1401 // object.
1402 int token_offset = Context::kHeaderSize + 1402 int token_offset = Context::kHeaderSize +
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2876 2876
2877 2877
2878 void MacroAssembler::LoadTransitionedArrayMapConditional( 2878 void MacroAssembler::LoadTransitionedArrayMapConditional(
2879 ElementsKind expected_kind, 2879 ElementsKind expected_kind,
2880 ElementsKind transitioned_kind, 2880 ElementsKind transitioned_kind,
2881 Register map_in_out, 2881 Register map_in_out,
2882 Register scratch, 2882 Register scratch,
2883 Label* no_map_match) { 2883 Label* no_map_match) {
2884 // Load the global or builtins object from the current context. 2884 // Load the global or builtins object from the current context.
2885 ldr(scratch, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 2885 ldr(scratch, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
2886 ldr(scratch, FieldMemOperand(scratch, GlobalObject::kGlobalContextOffset)); 2886 ldr(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset));
2887 2887
2888 // Check that the function's map is the same as the expected cached map. 2888 // Check that the function's map is the same as the expected cached map.
2889 ldr(scratch, 2889 ldr(scratch,
2890 MemOperand(scratch, 2890 MemOperand(scratch,
2891 Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX))); 2891 Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX)));
2892 size_t offset = expected_kind * kPointerSize + 2892 size_t offset = expected_kind * kPointerSize +
2893 FixedArrayBase::kHeaderSize; 2893 FixedArrayBase::kHeaderSize;
2894 ldr(ip, FieldMemOperand(scratch, offset)); 2894 ldr(ip, FieldMemOperand(scratch, offset));
2895 cmp(map_in_out, ip); 2895 cmp(map_in_out, ip);
2896 b(ne, no_map_match); 2896 b(ne, no_map_match);
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2923 scratch, 2923 scratch,
2924 &done); 2924 &done);
2925 } 2925 }
2926 bind(&done); 2926 bind(&done);
2927 } 2927 }
2928 2928
2929 2929
2930 void MacroAssembler::LoadGlobalFunction(int index, Register function) { 2930 void MacroAssembler::LoadGlobalFunction(int index, Register function) {
2931 // Load the global or builtins object from the current context. 2931 // Load the global or builtins object from the current context.
2932 ldr(function, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 2932 ldr(function, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
2933 // Load the global context from the global or builtins object. 2933 // Load the native context from the global or builtins object.
2934 ldr(function, FieldMemOperand(function, 2934 ldr(function, FieldMemOperand(function,
2935 GlobalObject::kGlobalContextOffset)); 2935 GlobalObject::kNativeContextOffset));
2936 // Load the function from the global context. 2936 // Load the function from the native context.
2937 ldr(function, MemOperand(function, Context::SlotOffset(index))); 2937 ldr(function, MemOperand(function, Context::SlotOffset(index)));
2938 } 2938 }
2939 2939
2940 2940
2941 void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, 2941 void MacroAssembler::LoadGlobalFunctionInitialMap(Register function,
2942 Register map, 2942 Register map,
2943 Register scratch) { 2943 Register scratch) {
2944 // Load the initial map. The global functions all have initial maps. 2944 // Load the initial map. The global functions all have initial maps.
2945 ldr(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 2945 ldr(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset));
2946 if (emit_debug_code()) { 2946 if (emit_debug_code()) {
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3820 void CodePatcher::EmitCondition(Condition cond) { 3820 void CodePatcher::EmitCondition(Condition cond) {
3821 Instr instr = Assembler::instr_at(masm_.pc_); 3821 Instr instr = Assembler::instr_at(masm_.pc_);
3822 instr = (instr & ~kCondMask) | cond; 3822 instr = (instr & ~kCondMask) | cond;
3823 masm_.emit(instr); 3823 masm_.emit(instr);
3824 } 3824 }
3825 3825
3826 3826
3827 } } // namespace v8::internal 3827 } } // namespace v8::internal
3828 3828
3829 #endif // V8_TARGET_ARCH_ARM 3829 #endif // V8_TARGET_ARCH_ARM
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