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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 // 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_MIPS64 | 7 #if V8_TARGET_ARCH_MIPS64 |
8 | 8 |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/code-stubs.h" | 10 #include "src/code-stubs.h" |
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1147 // Call the C routine. | 1147 // Call the C routine. |
1148 masm->mov(t9, s2); // Function pointer to t9 to conform to ABI for PIC. | 1148 masm->mov(t9, s2); // Function pointer to t9 to conform to ABI for PIC. |
1149 masm->jalr(t9); | 1149 masm->jalr(t9); |
1150 // Set up sp in the delay slot. | 1150 // Set up sp in the delay slot. |
1151 masm->daddiu(sp, sp, -kCArgsSlotsSize); | 1151 masm->daddiu(sp, sp, -kCArgsSlotsSize); |
1152 // Make sure the stored 'ra' points to this position. | 1152 // Make sure the stored 'ra' points to this position. |
1153 DCHECK_EQ(kNumInstructionsToJump, | 1153 DCHECK_EQ(kNumInstructionsToJump, |
1154 masm->InstructionsGeneratedSince(&find_ra)); | 1154 masm->InstructionsGeneratedSince(&find_ra)); |
1155 } | 1155 } |
1156 | 1156 |
1157 // Runtime functions should not return 'the hole'. Allowing it to escape may | |
1158 // lead to crashes in the IC code later. | |
1159 if (FLAG_debug_code) { | |
1160 Label okay; | |
1161 __ LoadRoot(a4, Heap::kTheHoleValueRootIndex); | |
1162 __ Branch(&okay, ne, v0, Operand(a4)); | |
1163 __ stop("The hole escaped"); | |
1164 __ bind(&okay); | |
1165 } | |
1166 | |
1167 // Check result for exception sentinel. | 1157 // Check result for exception sentinel. |
1168 Label exception_returned; | 1158 Label exception_returned; |
1169 __ LoadRoot(a4, Heap::kExceptionRootIndex); | 1159 __ LoadRoot(a4, Heap::kExceptionRootIndex); |
1170 __ Branch(&exception_returned, eq, a4, Operand(v0)); | 1160 __ Branch(&exception_returned, eq, a4, Operand(v0)); |
1171 | 1161 |
1172 // Check that there is no pending exception, otherwise we | 1162 // Check that there is no pending exception, otherwise we |
1173 // should have returned the exception sentinel. | 1163 // should have returned the exception sentinel. |
1174 if (FLAG_debug_code) { | 1164 if (FLAG_debug_code) { |
1175 Label okay; | 1165 Label okay; |
1176 ExternalReference pending_exception_address( | 1166 ExternalReference pending_exception_address( |
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5308 kStackUnwindSpace, kInvalidStackOffset, | 5298 kStackUnwindSpace, kInvalidStackOffset, |
5309 MemOperand(fp, 6 * kPointerSize), NULL); | 5299 MemOperand(fp, 6 * kPointerSize), NULL); |
5310 } | 5300 } |
5311 | 5301 |
5312 | 5302 |
5313 #undef __ | 5303 #undef __ |
5314 | 5304 |
5315 } } // namespace v8::internal | 5305 } } // namespace v8::internal |
5316 | 5306 |
5317 #endif // V8_TARGET_ARCH_MIPS64 | 5307 #endif // V8_TARGET_ARCH_MIPS64 |
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