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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions | 5 // modification, are permitted provided that the following conditions |
6 // are met: | 6 // are met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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1416 | 1416 |
1417 | 1417 |
1418 void Assembler::jmp(Handle<Code> code, RelocInfo::Mode rmode) { | 1418 void Assembler::jmp(Handle<Code> code, RelocInfo::Mode rmode) { |
1419 EnsureSpace ensure_space(this); | 1419 EnsureSpace ensure_space(this); |
1420 ASSERT(RelocInfo::IsCodeTarget(rmode)); | 1420 ASSERT(RelocInfo::IsCodeTarget(rmode)); |
1421 EMIT(0xE9); | 1421 EMIT(0xE9); |
1422 emit(reinterpret_cast<intptr_t>(code.location()), rmode); | 1422 emit(reinterpret_cast<intptr_t>(code.location()), rmode); |
1423 } | 1423 } |
1424 | 1424 |
1425 | 1425 |
1426 void Assembler::j(Condition cc, Label* L, Hint hint, Label::Distance distance) { | 1426 void Assembler::j(Condition cc, Label* L, Label::Distance distance) { |
1427 EnsureSpace ensure_space(this); | 1427 EnsureSpace ensure_space(this); |
1428 ASSERT(0 <= cc && cc < 16); | 1428 ASSERT(0 <= cc && cc < 16); |
1429 if (FLAG_emit_branch_hints && hint != no_hint) EMIT(hint); | |
1430 if (L->is_bound()) { | 1429 if (L->is_bound()) { |
1431 const int short_size = 2; | 1430 const int short_size = 2; |
1432 const int long_size = 6; | 1431 const int long_size = 6; |
1433 int offs = L->pos() - pc_offset(); | 1432 int offs = L->pos() - pc_offset(); |
1434 ASSERT(offs <= 0); | 1433 ASSERT(offs <= 0); |
1435 if (is_int8(offs - short_size)) { | 1434 if (is_int8(offs - short_size)) { |
1436 // 0111 tttn #8-bit disp | 1435 // 0111 tttn #8-bit disp |
1437 EMIT(0x70 | cc); | 1436 EMIT(0x70 | cc); |
1438 EMIT((offs - short_size) & 0xFF); | 1437 EMIT((offs - short_size) & 0xFF); |
1439 } else { | 1438 } else { |
1440 // 0000 1111 1000 tttn #32-bit disp | 1439 // 0000 1111 1000 tttn #32-bit disp |
1441 EMIT(0x0F); | 1440 EMIT(0x0F); |
1442 EMIT(0x80 | cc); | 1441 EMIT(0x80 | cc); |
1443 emit(offs - long_size); | 1442 emit(offs - long_size); |
1444 } | 1443 } |
1445 } else if (distance == Label::kNear) { | 1444 } else if (distance == Label::kNear) { |
1446 EMIT(0x70 | cc); | 1445 EMIT(0x70 | cc); |
1447 emit_near_disp(L); | 1446 emit_near_disp(L); |
1448 } else { | 1447 } else { |
1449 // 0000 1111 1000 tttn #32-bit disp | 1448 // 0000 1111 1000 tttn #32-bit disp |
1450 // Note: could eliminate cond. jumps to this jump if condition | 1449 // Note: could eliminate cond. jumps to this jump if condition |
1451 // is the same however, seems to be rather unlikely case. | 1450 // is the same however, seems to be rather unlikely case. |
1452 EMIT(0x0F); | 1451 EMIT(0x0F); |
1453 EMIT(0x80 | cc); | 1452 EMIT(0x80 | cc); |
1454 emit_disp(L, Displacement::OTHER); | 1453 emit_disp(L, Displacement::OTHER); |
1455 } | 1454 } |
1456 } | 1455 } |
1457 | 1456 |
1458 | 1457 |
1459 void Assembler::j(Condition cc, byte* entry, RelocInfo::Mode rmode, Hint hint) { | 1458 void Assembler::j(Condition cc, byte* entry, RelocInfo::Mode rmode) { |
1460 EnsureSpace ensure_space(this); | 1459 EnsureSpace ensure_space(this); |
1461 ASSERT((0 <= cc) && (cc < 16)); | 1460 ASSERT((0 <= cc) && (cc < 16)); |
1462 if (FLAG_emit_branch_hints && hint != no_hint) EMIT(hint); | |
1463 // 0000 1111 1000 tttn #32-bit disp. | 1461 // 0000 1111 1000 tttn #32-bit disp. |
1464 EMIT(0x0F); | 1462 EMIT(0x0F); |
1465 EMIT(0x80 | cc); | 1463 EMIT(0x80 | cc); |
1466 emit(entry - (pc_ + sizeof(int32_t)), rmode); | 1464 emit(entry - (pc_ + sizeof(int32_t)), rmode); |
1467 } | 1465 } |
1468 | 1466 |
1469 | 1467 |
1470 void Assembler::j(Condition cc, Handle<Code> code, Hint hint) { | 1468 void Assembler::j(Condition cc, Handle<Code> code) { |
1471 EnsureSpace ensure_space(this); | 1469 EnsureSpace ensure_space(this); |
1472 if (FLAG_emit_branch_hints && hint != no_hint) EMIT(hint); | |
1473 // 0000 1111 1000 tttn #32-bit disp | 1470 // 0000 1111 1000 tttn #32-bit disp |
1474 EMIT(0x0F); | 1471 EMIT(0x0F); |
1475 EMIT(0x80 | cc); | 1472 EMIT(0x80 | cc); |
1476 emit(reinterpret_cast<intptr_t>(code.location()), RelocInfo::CODE_TARGET); | 1473 emit(reinterpret_cast<intptr_t>(code.location()), RelocInfo::CODE_TARGET); |
1477 } | 1474 } |
1478 | 1475 |
1479 | 1476 |
1480 // FPU instructions. | 1477 // FPU instructions. |
1481 | 1478 |
1482 void Assembler::fld(int i) { | 1479 void Assembler::fld(int i) { |
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2481 fprintf(coverage_log, "%s\n", file_line); | 2478 fprintf(coverage_log, "%s\n", file_line); |
2482 fflush(coverage_log); | 2479 fflush(coverage_log); |
2483 } | 2480 } |
2484 } | 2481 } |
2485 | 2482 |
2486 #endif | 2483 #endif |
2487 | 2484 |
2488 } } // namespace v8::internal | 2485 } } // namespace v8::internal |
2489 | 2486 |
2490 #endif // V8_TARGET_ARCH_IA32 | 2487 #endif // V8_TARGET_ARCH_IA32 |
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