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1 // Copyright 2007-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2007-2008 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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711 bool has_register = false; // Is the FPU register encoded in modrm_byte? | 711 bool has_register = false; // Is the FPU register encoded in modrm_byte? |
712 const char* mnem = "?"; | 712 const char* mnem = "?"; |
713 | 713 |
714 switch (escape_opcode) { | 714 switch (escape_opcode) { |
715 case 0xD8: | 715 case 0xD8: |
716 UnimplementedInstruction(); | 716 UnimplementedInstruction(); |
717 break; | 717 break; |
718 | 718 |
719 case 0xD9: | 719 case 0xD9: |
720 switch (modrm_byte & 0xF8) { | 720 switch (modrm_byte & 0xF8) { |
| 721 case 0xC0: |
| 722 mnem = "fld"; |
| 723 has_register = true; |
| 724 break; |
721 case 0xC8: | 725 case 0xC8: |
722 mnem = "fxch"; | 726 mnem = "fxch"; |
723 has_register = true; | 727 has_register = true; |
724 break; | 728 break; |
725 default: | 729 default: |
726 switch (modrm_byte) { | 730 switch (modrm_byte) { |
727 case 0xE0: mnem = "fchs"; break; | 731 case 0xE0: mnem = "fchs"; break; |
728 case 0xE1: mnem = "fabs"; break; | 732 case 0xE1: mnem = "fabs"; break; |
729 case 0xE4: mnem = "ftst"; break; | 733 case 0xE4: mnem = "ftst"; break; |
730 case 0xE8: mnem = "fld1"; break; | 734 case 0xE8: mnem = "fld1"; break; |
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1506 fprintf(f, " "); | 1510 fprintf(f, " "); |
1507 } | 1511 } |
1508 fprintf(f, " %s\n", buffer.start()); | 1512 fprintf(f, " %s\n", buffer.start()); |
1509 } | 1513 } |
1510 } | 1514 } |
1511 | 1515 |
1512 | 1516 |
1513 } // namespace disasm | 1517 } // namespace disasm |
1514 | 1518 |
1515 #endif // V8_TARGET_ARCH_IA32 | 1519 #endif // V8_TARGET_ARCH_IA32 |
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