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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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906 Abort(msg); | 906 Abort(msg); |
907 // will not return here | 907 // will not return here |
908 bind(&L); | 908 bind(&L); |
909 } | 909 } |
910 | 910 |
911 | 911 |
912 void MacroAssembler::Abort(const char* msg) { | 912 void MacroAssembler::Abort(const char* msg) { |
913 // We want to pass the msg string like a smi to avoid GC | 913 // We want to pass the msg string like a smi to avoid GC |
914 // problems, however msg is not guaranteed to be aligned | 914 // problems, however msg is not guaranteed to be aligned |
915 // properly. Instead, we pass an aligned pointer that is | 915 // properly. Instead, we pass an aligned pointer that is |
916 // a proper v8 smi, but also pass the aligment difference | 916 // a proper v8 smi, but also pass the alignment difference |
917 // from the real pointer as a smi. | 917 // from the real pointer as a smi. |
918 intptr_t p1 = reinterpret_cast<intptr_t>(msg); | 918 intptr_t p1 = reinterpret_cast<intptr_t>(msg); |
919 intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; | 919 intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; |
920 ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); | 920 ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); |
921 #ifdef DEBUG | 921 #ifdef DEBUG |
922 if (msg != NULL) { | 922 if (msg != NULL) { |
923 RecordComment("Abort message: "); | 923 RecordComment("Abort message: "); |
924 RecordComment(msg); | 924 RecordComment(msg); |
925 } | 925 } |
926 #endif | 926 #endif |
927 mov(r0, Operand(p0)); | 927 mov(r0, Operand(p0)); |
928 push(r0); | 928 push(r0); |
929 mov(r0, Operand(Smi::FromInt(p1 - p0))); | 929 mov(r0, Operand(Smi::FromInt(p1 - p0))); |
930 push(r0); | 930 push(r0); |
931 CallRuntime(Runtime::kAbort, 2); | 931 CallRuntime(Runtime::kAbort, 2); |
932 // will not return here | 932 // will not return here |
933 } | 933 } |
934 | 934 |
935 } } // namespace v8::internal | 935 } } // namespace v8::internal |
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