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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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| 28 #include "v8.h" | 28 #include "v8.h" |
| 29 | 29 |
| 30 #include "codegen-inl.h" | 30 #include "codegen-inl.h" |
| 31 #include "register-allocator-inl.h" | 31 #include "register-allocator-inl.h" |
| 32 #include "scopes.h" | 32 #include "scopes.h" |
| 33 #include "virtual-frame-inl.h" | 33 #include "virtual-frame-inl.h" |
| 34 | 34 |
| 35 namespace v8 { | 35 namespace v8 { |
| 36 namespace internal { | 36 namespace internal { |
| 37 | 37 |
| 38 // ------------------------------------------------------------------------- | |
| 39 // VirtualFrame implementation. | |
| 40 | |
| 41 #define __ ACCESS_MASM(masm()) | 38 #define __ ACCESS_MASM(masm()) |
| 42 | 39 |
| 43 | |
| 44 // On entry to a function, the virtual frame already contains the | |
| 45 // receiver and the parameters. All initial frame elements are in | |
| 46 // memory. | |
| 47 VirtualFrame::VirtualFrame() | |
| 48 : elements_(parameter_count() + local_count() + kPreallocatedElements), | |
| 49 stack_pointer_(parameter_count()) { // 0-based index of TOS. | |
| 50 for (int i = 0; i <= stack_pointer_; i++) { | |
| 51 elements_.Add(FrameElement::MemoryElement(NumberInfo::kUnknown)); | |
| 52 } | |
| 53 for (int i = 0; i < RegisterAllocator::kNumRegisters; i++) { | |
| 54 register_locations_[i] = kIllegalIndex; | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 | |
| 59 void VirtualFrame::SyncElementBelowStackPointer(int index) { | 40 void VirtualFrame::SyncElementBelowStackPointer(int index) { |
| 60 UNREACHABLE(); | 41 UNREACHABLE(); |
| 61 } | 42 } |
| 62 | 43 |
| 63 | 44 |
| 64 void VirtualFrame::SyncElementByPushing(int index) { | 45 void VirtualFrame::SyncElementByPushing(int index) { |
| 65 UNREACHABLE(); | 46 UNREACHABLE(); |
| 66 } | 47 } |
| 67 | 48 |
| 68 | 49 |
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| 323 void VirtualFrame::EmitPushMultiple(int count, int src_regs) { | 304 void VirtualFrame::EmitPushMultiple(int count, int src_regs) { |
| 324 ASSERT(stack_pointer_ == element_count() - 1); | 305 ASSERT(stack_pointer_ == element_count() - 1); |
| 325 Adjust(count); | 306 Adjust(count); |
| 326 __ stm(db_w, sp, src_regs); | 307 __ stm(db_w, sp, src_regs); |
| 327 } | 308 } |
| 328 | 309 |
| 329 | 310 |
| 330 #undef __ | 311 #undef __ |
| 331 | 312 |
| 332 } } // namespace v8::internal | 313 } } // namespace v8::internal |
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