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Issue 1008963002: PPC: Further leverage internal references. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 9 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_PPC 7 #if V8_TARGET_ARCH_PPC
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/bootstrapper.h" 10 #include "src/bootstrapper.h"
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1117 __ Move(ip, r15); 1117 __ Move(ip, r15);
1118 Register target = ip; 1118 Register target = ip;
1119 #else 1119 #else
1120 Register target = r15; 1120 Register target = r15;
1121 #endif 1121 #endif
1122 1122
1123 // To let the GC traverse the return address of the exit frames, we need to 1123 // To let the GC traverse the return address of the exit frames, we need to
1124 // know where the return address is. The CEntryStub is unmovable, so 1124 // know where the return address is. The CEntryStub is unmovable, so
1125 // we can store the address on the stack to be able to find it again and 1125 // we can store the address on the stack to be able to find it again and
1126 // we never have to restore it, because it will not change. 1126 // we never have to restore it, because it will not change.
1127 // Compute the return address in lr to return to after the jump below. Pc is 1127 Label after_call;
1128 // already at '+ 8' from the current instruction but return is after three 1128 __ mov_label_addr(r0, &after_call);
1129 // instructions so add another 4 to pc to get the return address. 1129 __ StoreP(r0, MemOperand(sp, kStackFrameExtraParamSlot * kPointerSize));
1130 { 1130 __ Call(target);
1131 Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm); 1131 __ bind(&after_call);
1132 Label here;
1133 __ b(&here, SetLK);
1134 __ bind(&here);
1135 __ mflr(r8);
1136
1137 // Constant used below is dependent on size of Call() macro instructions
1138 __ addi(r0, r8, Operand(20));
1139
1140 __ StoreP(r0, MemOperand(sp, kStackFrameExtraParamSlot * kPointerSize));
1141 __ Call(target);
1142 }
1143 1132
1144 #if !ABI_RETURNS_OBJECT_PAIRS_IN_REGS 1133 #if !ABI_RETURNS_OBJECT_PAIRS_IN_REGS
1145 // If return value is on the stack, pop it to registers. 1134 // If return value is on the stack, pop it to registers.
1146 if (result_size() > 1) { 1135 if (result_size() > 1) {
1147 __ LoadP(r4, MemOperand(r3, kPointerSize)); 1136 __ LoadP(r4, MemOperand(r3, kPointerSize));
1148 __ LoadP(r3, MemOperand(r3)); 1137 __ LoadP(r3, MemOperand(r3));
1149 } 1138 }
1150 #endif 1139 #endif
1151 1140
1152 // Runtime functions should not return 'the hole'. Allowing it to escape may 1141 // Runtime functions should not return 'the hole'. Allowing it to escape may
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5353 kStackUnwindSpace, NULL, 5342 kStackUnwindSpace, NULL,
5354 MemOperand(fp, 6 * kPointerSize), NULL); 5343 MemOperand(fp, 6 * kPointerSize), NULL);
5355 } 5344 }
5356 5345
5357 5346
5358 #undef __ 5347 #undef __
5359 } 5348 }
5360 } // namespace v8::internal 5349 } // namespace v8::internal
5361 5350
5362 #endif // V8_TARGET_ARCH_PPC 5351 #endif // V8_TARGET_ARCH_PPC
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