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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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| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | 27 |
| 28 #include "v8.h" | 28 #include "v8.h" |
| 29 | 29 |
| 30 #include "codegen-inl.h" | 30 #include "codegen-inl.h" |
| 31 #include "compiler.h" | 31 #include "compiler.h" |
| 32 #include "debug.h" | 32 #include "debug.h" |
| 33 #include "full-codegen.h" | 33 #include "full-codegen.h" |
| 34 #include "parser.h" | 34 #include "parser.h" |
| 35 #include "scopes.h" |
| 35 | 36 |
| 36 namespace v8 { | 37 namespace v8 { |
| 37 namespace internal { | 38 namespace internal { |
| 38 | 39 |
| 39 #define __ ACCESS_MASM(masm_) | 40 #define __ ACCESS_MASM(masm_) |
| 40 | 41 |
| 41 // Generate code for a JS function. On entry to the function the receiver | 42 // Generate code for a JS function. On entry to the function the receiver |
| 42 // and arguments have been pushed on the stack left to right. The actual | 43 // and arguments have been pushed on the stack left to right. The actual |
| 43 // argument count matches the formal parameter count expected by the | 44 // argument count matches the formal parameter count expected by the |
| 44 // function. | 45 // function. |
| 45 // | 46 // |
| 46 // The live registers are: | 47 // The live registers are: |
| 47 // o r1: the JS function object being called (ie, ourselves) | 48 // o r1: the JS function object being called (ie, ourselves) |
| 48 // o cp: our context | 49 // o cp: our context |
| 49 // o fp: our caller's frame pointer | 50 // o fp: our caller's frame pointer |
| 50 // o sp: stack pointer | 51 // o sp: stack pointer |
| 51 // o lr: return address | 52 // o lr: return address |
| 52 // | 53 // |
| 53 // The function builds a JS frame. Please see JavaScriptFrameConstants in | 54 // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 54 // frames-arm.h for its layout. | 55 // frames-arm.h for its layout. |
| 55 void FullCodeGenerator::Generate(CompilationInfo* info, Mode mode) { | 56 void FullCodeGenerator::Generate(CompilationInfo* info, Mode mode) { |
| 56 ASSERT(info_ == NULL); | 57 ASSERT(info_ == NULL); |
| 57 info_ = info; | 58 info_ = info; |
| 58 SetFunctionPosition(function()); | 59 SetFunctionPosition(function()); |
| 60 Comment cmnt(masm_, "[ function compiled by full code generator"); |
| 59 | 61 |
| 60 if (mode == PRIMARY) { | 62 if (mode == PRIMARY) { |
| 61 int locals_count = scope()->num_stack_slots(); | 63 int locals_count = scope()->num_stack_slots(); |
| 62 | 64 |
| 63 __ stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit()); | 65 __ stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit()); |
| 64 if (locals_count > 0) { | 66 if (locals_count > 0) { |
| 65 // Load undefined value here, so the value is ready for the loop | 67 // Load undefined value here, so the value is ready for the loop |
| 66 // below. | 68 // below. |
| 67 __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); | 69 __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
| 68 } | 70 } |
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| 1856 __ pop(result_register()); | 1858 __ pop(result_register()); |
| 1857 ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); | 1859 ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); |
| 1858 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. | 1860 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. |
| 1859 __ add(pc, r1, Operand(masm_->CodeObject())); | 1861 __ add(pc, r1, Operand(masm_->CodeObject())); |
| 1860 } | 1862 } |
| 1861 | 1863 |
| 1862 | 1864 |
| 1863 #undef __ | 1865 #undef __ |
| 1864 | 1866 |
| 1865 } } // namespace v8::internal | 1867 } } // namespace v8::internal |
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