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| 1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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, with the | 43 // and arguments have been pushed on the stack left to right, with the |
| 43 // return address on top of them. The actual argument count matches the | 44 // return address on top of them. The actual argument count matches the |
| 44 // formal parameter count expected by the function. | 45 // formal parameter count expected by the function. |
| 45 // | 46 // |
| 46 // The live registers are: | 47 // The live registers are: |
| 47 // o rdi: the JS function object being called (ie, ourselves) | 48 // o rdi: the JS function object being called (ie, ourselves) |
| 48 // o rsi: our context | 49 // o rsi: our context |
| 49 // o rbp: our caller's frame pointer | 50 // o rbp: our caller's frame pointer |
| 50 // o rsp: stack pointer (pointing to return address) | 51 // o rsp: stack pointer (pointing to return address) |
| 51 // | 52 // |
| 52 // The function builds a JS frame. Please see JavaScriptFrameConstants in | 53 // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 53 // frames-x64.h for its layout. | 54 // frames-x64.h for its layout. |
| 54 void FullCodeGenerator::Generate(CompilationInfo* info, Mode mode) { | 55 void FullCodeGenerator::Generate(CompilationInfo* info, Mode mode) { |
| 55 ASSERT(info_ == NULL); | 56 ASSERT(info_ == NULL); |
| 56 info_ = info; | 57 info_ = info; |
| 57 SetFunctionPosition(function()); | 58 SetFunctionPosition(function()); |
| 59 Comment cmnt(masm_, "[ function compiled by full code generator"); |
| 58 | 60 |
| 59 if (mode == PRIMARY) { | 61 if (mode == PRIMARY) { |
| 60 __ push(rbp); // Caller's frame pointer. | 62 __ push(rbp); // Caller's frame pointer. |
| 61 __ movq(rbp, rsp); | 63 __ movq(rbp, rsp); |
| 62 __ push(rsi); // Callee's context. | 64 __ push(rsi); // Callee's context. |
| 63 __ push(rdi); // Callee's JS Function. | 65 __ push(rdi); // Callee's JS Function. |
| 64 | 66 |
| 65 { Comment cmnt(masm_, "[ Allocate locals"); | 67 { Comment cmnt(masm_, "[ Allocate locals"); |
| 66 int locals_count = scope()->num_stack_slots(); | 68 int locals_count = scope()->num_stack_slots(); |
| 67 if (locals_count == 1) { | 69 if (locals_count == 1) { |
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| 1982 __ movq(Operand(rsp, 0), rdx); | 1984 __ movq(Operand(rsp, 0), rdx); |
| 1983 // And return. | 1985 // And return. |
| 1984 __ ret(0); | 1986 __ ret(0); |
| 1985 } | 1987 } |
| 1986 | 1988 |
| 1987 | 1989 |
| 1988 #undef __ | 1990 #undef __ |
| 1989 | 1991 |
| 1990 | 1992 |
| 1991 } } // namespace v8::internal | 1993 } } // namespace v8::internal |
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