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Issue 191233003: Add out-of-line constant pool support to Arm. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Fix other Arches. Created 6 years, 9 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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955 // If the code object is null, just return to the unoptimized code. 955 // If the code object is null, just return to the unoptimized code.
956 Label skip; 956 Label skip;
957 __ cmp(r0, Operand(Smi::FromInt(0))); 957 __ cmp(r0, Operand(Smi::FromInt(0)));
958 __ b(ne, &skip); 958 __ b(ne, &skip);
959 __ Ret(); 959 __ Ret();
960 960
961 __ bind(&skip); 961 __ bind(&skip);
962 962
963 // Load deoptimization data from the code object. 963 // Load deoptimization data from the code object.
964 // <deopt_data> = <code>[#deoptimization_data_offset] 964 // <deopt_data> = <code>[#deoptimization_data_offset]
965 __ ldr(r1, MemOperand(r0, Code::kDeoptimizationDataOffset - kHeapObjectTag)); 965 __ ldr(r1, FieldMemOperand(r0, Code::kDeoptimizationDataOffset));
966 966
967 // Load the OSR entrypoint offset from the deoptimization data. 967 { ConstantPoolUnavailableScope constant_pool_unavailable(masm);
968 // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset] 968 if (FLAG_enable_ool_constant_pool) {
969 __ ldr(r1, MemOperand(r1, FixedArray::OffsetOfElementAt( 969 __ ldr(pp, FieldMemOperand(r0, Code::kConstantPoolOffset));
970 DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag)); 970 }
971 971
972 // Compute the target address = code_obj + header_size + osr_offset 972 // Load the OSR entrypoint offset from the deoptimization data.
973 // <entry_addr> = <code_obj> + #header_size + <osr_offset> 973 // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset]
974 __ add(r0, r0, Operand::SmiUntag(r1)); 974 __ ldr(r1, FieldMemOperand(r1, FixedArray::OffsetOfElementAt(
975 __ add(lr, r0, Operand(Code::kHeaderSize - kHeapObjectTag)); 975 DeoptimizationInputData::kOsrPcOffsetIndex)));
976 976
977 // And "return" to the OSR entry point of the function. 977 // Compute the target address = code_obj + header_size + osr_offset
978 __ Ret(); 978 // <entry_addr> = <code_obj> + #header_size + <osr_offset>
979 __ add(r0, r0, Operand::SmiUntag(r1));
980 __ add(lr, r0, Operand(Code::kHeaderSize - kHeapObjectTag));
981
982 // And "return" to the OSR entry point of the function.
983 __ Ret();
984 }
979 } 985 }
980 986
981 987
982 void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) { 988 void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) {
983 // We check the stack limit as indicator that recompilation might be done. 989 // We check the stack limit as indicator that recompilation might be done.
984 Label ok; 990 Label ok;
985 __ LoadRoot(ip, Heap::kStackLimitRootIndex); 991 __ LoadRoot(ip, Heap::kStackLimitRootIndex);
986 __ cmp(sp, Operand(ip)); 992 __ cmp(sp, Operand(ip));
987 __ b(hs, &ok); 993 __ b(hs, &ok);
988 { 994 {
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1473 __ bind(&dont_adapt_arguments); 1479 __ bind(&dont_adapt_arguments);
1474 __ Jump(r3); 1480 __ Jump(r3);
1475 } 1481 }
1476 1482
1477 1483
1478 #undef __ 1484 #undef __
1479 1485
1480 } } // namespace v8::internal 1486 } } // namespace v8::internal
1481 1487
1482 #endif // V8_TARGET_ARCH_ARM 1488 #endif // V8_TARGET_ARCH_ARM
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