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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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81 break; | 81 break; |
82 case CASE_NUMBER(NO_TOS_REGISTERS, R1_TOS): | 82 case CASE_NUMBER(NO_TOS_REGISTERS, R1_TOS): |
83 __ pop(r1); | 83 __ pop(r1); |
84 break; | 84 break; |
85 case CASE_NUMBER(NO_TOS_REGISTERS, R0_R1_TOS): | 85 case CASE_NUMBER(NO_TOS_REGISTERS, R0_R1_TOS): |
86 __ pop(r0); | 86 __ pop(r0); |
87 __ pop(r1); | 87 __ pop(r1); |
88 break; | 88 break; |
89 case CASE_NUMBER(NO_TOS_REGISTERS, R1_R0_TOS): | 89 case CASE_NUMBER(NO_TOS_REGISTERS, R1_R0_TOS): |
90 __ pop(r1); | 90 __ pop(r1); |
91 __ pop(r1); | 91 __ pop(r0); |
92 break; | 92 break; |
93 case CASE_NUMBER(R0_TOS, NO_TOS_REGISTERS): | 93 case CASE_NUMBER(R0_TOS, NO_TOS_REGISTERS): |
94 __ push(r0); | 94 __ push(r0); |
95 break; | 95 break; |
96 case CASE_NUMBER(R0_TOS, R0_TOS): | 96 case CASE_NUMBER(R0_TOS, R0_TOS): |
97 break; | 97 break; |
98 case CASE_NUMBER(R0_TOS, R1_TOS): | 98 case CASE_NUMBER(R0_TOS, R1_TOS): |
99 __ mov(r1, r0); | 99 __ mov(r1, r0); |
100 break; | 100 break; |
101 case CASE_NUMBER(R0_TOS, R0_R1_TOS): | 101 case CASE_NUMBER(R0_TOS, R0_R1_TOS): |
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422 __ Push(r0, r1); | 422 __ Push(r0, r1); |
423 __ mov(r0, r1); | 423 __ mov(r0, r1); |
424 break; | 424 break; |
425 default: | 425 default: |
426 UNREACHABLE(); | 426 UNREACHABLE(); |
427 } | 427 } |
428 top_of_stack_state_ = NO_TOS_REGISTERS; | 428 top_of_stack_state_ = NO_TOS_REGISTERS; |
429 } | 429 } |
430 | 430 |
431 | 431 |
| 432 void VirtualFrame::SpillAllButCopyTOSToR1R0() { |
| 433 switch (top_of_stack_state_) { |
| 434 case NO_TOS_REGISTERS: |
| 435 __ ldr(r1, MemOperand(sp, 0)); |
| 436 __ ldr(r0, MemOperand(sp, kPointerSize)); |
| 437 break; |
| 438 case R0_TOS: |
| 439 __ push(r0); |
| 440 __ mov(r1, r0); |
| 441 __ ldr(r0, MemOperand(sp, kPointerSize)); |
| 442 break; |
| 443 case R1_TOS: |
| 444 __ push(r1); |
| 445 __ ldr(r0, MemOperand(sp, kPointerSize)); |
| 446 break; |
| 447 case R0_R1_TOS: |
| 448 __ Push(r1, r0); |
| 449 __ Swap(r0, r1, ip); |
| 450 break; |
| 451 case R1_R0_TOS: |
| 452 __ Push(r0, r1); |
| 453 break; |
| 454 default: |
| 455 UNREACHABLE(); |
| 456 } |
| 457 top_of_stack_state_ = NO_TOS_REGISTERS; |
| 458 } |
| 459 |
| 460 |
432 Register VirtualFrame::Peek() { | 461 Register VirtualFrame::Peek() { |
433 AssertIsNotSpilled(); | 462 AssertIsNotSpilled(); |
434 if (top_of_stack_state_ == NO_TOS_REGISTERS) { | 463 if (top_of_stack_state_ == NO_TOS_REGISTERS) { |
435 top_of_stack_state_ = kStateAfterPush[top_of_stack_state_]; | 464 top_of_stack_state_ = kStateAfterPush[top_of_stack_state_]; |
436 Register answer = kTopRegister[top_of_stack_state_]; | 465 Register answer = kTopRegister[top_of_stack_state_]; |
437 __ pop(answer); | 466 __ pop(answer); |
438 return answer; | 467 return answer; |
439 } else { | 468 } else { |
440 return kTopRegister[top_of_stack_state_]; | 469 return kTopRegister[top_of_stack_state_]; |
441 } | 470 } |
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547 default: | 576 default: |
548 UNREACHABLE(); | 577 UNREACHABLE(); |
549 break; | 578 break; |
550 } | 579 } |
551 ASSERT(register_allocation_map_ == 0); // Not yet implemented. | 580 ASSERT(register_allocation_map_ == 0); // Not yet implemented. |
552 } | 581 } |
553 | 582 |
554 #undef __ | 583 #undef __ |
555 | 584 |
556 } } // namespace v8::internal | 585 } } // namespace v8::internal |
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