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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 
| 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 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 28 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 
| 29 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 29 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 
| 30 | 30 | 
| 31 #include "assembler.h" | 31 #include "assembler.h" | 
| 32 #include "frames.h" |  | 
| 33 #include "v8globals.h" | 32 #include "v8globals.h" | 
| 34 | 33 | 
| 35 namespace v8 { | 34 namespace v8 { | 
| 36 namespace internal { | 35 namespace internal { | 
| 37 | 36 | 
| 38 // Flags used for the AllocateInNewSpace functions. | 37 // Flags used for the AllocateInNewSpace functions. | 
| 39 enum AllocationFlags { | 38 enum AllocationFlags { | 
| 40   // No special flags. | 39   // No special flags. | 
| 41   NO_ALLOCATION_FLAGS = 0, | 40   NO_ALLOCATION_FLAGS = 0, | 
| 42   // Return the pointer to the allocated already tagged as a heap object. | 41   // Return the pointer to the allocated already tagged as a heap object. | 
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| 99                    Register address, | 98                    Register address, | 
| 100                    Register value); | 99                    Register value); | 
| 101 | 100 | 
| 102 #ifdef ENABLE_DEBUGGER_SUPPORT | 101 #ifdef ENABLE_DEBUGGER_SUPPORT | 
| 103   // --------------------------------------------------------------------------- | 102   // --------------------------------------------------------------------------- | 
| 104   // Debugger Support | 103   // Debugger Support | 
| 105 | 104 | 
| 106   void DebugBreak(); | 105   void DebugBreak(); | 
| 107 #endif | 106 #endif | 
| 108 | 107 | 
|  | 108   // --------------------------------------------------------------------------- | 
|  | 109   // Activation frames | 
|  | 110 | 
|  | 111   void EnterInternalFrame() { EnterFrame(StackFrame::INTERNAL); } | 
|  | 112   void LeaveInternalFrame() { LeaveFrame(StackFrame::INTERNAL); } | 
|  | 113 | 
|  | 114   void EnterConstructFrame() { EnterFrame(StackFrame::CONSTRUCT); } | 
|  | 115   void LeaveConstructFrame() { LeaveFrame(StackFrame::CONSTRUCT); } | 
|  | 116 | 
| 109   // Enter specific kind of exit frame. Expects the number of | 117   // Enter specific kind of exit frame. Expects the number of | 
| 110   // arguments in register eax and sets up the number of arguments in | 118   // arguments in register eax and sets up the number of arguments in | 
| 111   // register edi and the pointer to the first argument in register | 119   // register edi and the pointer to the first argument in register | 
| 112   // esi. | 120   // esi. | 
| 113   void EnterExitFrame(bool save_doubles); | 121   void EnterExitFrame(bool save_doubles); | 
| 114 | 122 | 
| 115   void EnterApiExitFrame(int argc); | 123   void EnterApiExitFrame(int argc); | 
| 116 | 124 | 
| 117   // Leave the current exit frame. Expects the return value in | 125   // Leave the current exit frame. Expects the return value in | 
| 118   // register eax:edx (untouched) and the pointer to the first | 126   // register eax:edx (untouched) and the pointer to the first | 
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| 609   void Abort(const char* msg); | 617   void Abort(const char* msg); | 
| 610 | 618 | 
| 611   // Check that the stack is aligned. | 619   // Check that the stack is aligned. | 
| 612   void CheckStackAlignment(); | 620   void CheckStackAlignment(); | 
| 613 | 621 | 
| 614   // Verify restrictions about code generated in stubs. | 622   // Verify restrictions about code generated in stubs. | 
| 615   void set_generating_stub(bool value) { generating_stub_ = value; } | 623   void set_generating_stub(bool value) { generating_stub_ = value; } | 
| 616   bool generating_stub() { return generating_stub_; } | 624   bool generating_stub() { return generating_stub_; } | 
| 617   void set_allow_stub_calls(bool value) { allow_stub_calls_ = value; } | 625   void set_allow_stub_calls(bool value) { allow_stub_calls_ = value; } | 
| 618   bool allow_stub_calls() { return allow_stub_calls_; } | 626   bool allow_stub_calls() { return allow_stub_calls_; } | 
| 619   void set_has_frame(bool value) { has_frame_ = value; } |  | 
| 620   bool has_frame() { return has_frame_; } |  | 
| 621   inline bool AllowThisStubCall(CodeStub* stub); |  | 
| 622 | 627 | 
| 623   // --------------------------------------------------------------------------- | 628   // --------------------------------------------------------------------------- | 
| 624   // String utilities. | 629   // String utilities. | 
| 625 | 630 | 
| 626   // Check whether the instance type represents a flat ascii string. Jump to the | 631   // Check whether the instance type represents a flat ascii string. Jump to the | 
| 627   // label if not. If the instance type can be scratched specify same register | 632   // label if not. If the instance type can be scratched specify same register | 
| 628   // for both instance type and scratch. | 633   // for both instance type and scratch. | 
| 629   void JumpIfInstanceTypeIsNotSequentialAscii(Register instance_type, | 634   void JumpIfInstanceTypeIsNotSequentialAscii(Register instance_type, | 
| 630                                               Register scratch, | 635                                               Register scratch, | 
| 631                                               Label* on_not_flat_ascii_string); | 636                                               Label* on_not_flat_ascii_string); | 
| 632 | 637 | 
| 633   // Checks if both objects are sequential ASCII strings, and jumps to label | 638   // Checks if both objects are sequential ASCII strings, and jumps to label | 
| 634   // if either is not. | 639   // if either is not. | 
| 635   void JumpIfNotBothSequentialAsciiStrings(Register object1, | 640   void JumpIfNotBothSequentialAsciiStrings(Register object1, | 
| 636                                            Register object2, | 641                                            Register object2, | 
| 637                                            Register scratch1, | 642                                            Register scratch1, | 
| 638                                            Register scratch2, | 643                                            Register scratch2, | 
| 639                                            Label* on_not_flat_ascii_strings); | 644                                            Label* on_not_flat_ascii_strings); | 
| 640 | 645 | 
| 641   static int SafepointRegisterStackIndex(Register reg) { | 646   static int SafepointRegisterStackIndex(Register reg) { | 
| 642     return SafepointRegisterStackIndex(reg.code()); | 647     return SafepointRegisterStackIndex(reg.code()); | 
| 643   } | 648   } | 
| 644 | 649 | 
| 645   // Activation support. |  | 
| 646   void EnterFrame(StackFrame::Type type); |  | 
| 647   void LeaveFrame(StackFrame::Type type); |  | 
| 648 |  | 
| 649  private: | 650  private: | 
| 650   bool generating_stub_; | 651   bool generating_stub_; | 
| 651   bool allow_stub_calls_; | 652   bool allow_stub_calls_; | 
| 652   bool has_frame_; |  | 
| 653   // This handle will be patched with the code object on installation. | 653   // This handle will be patched with the code object on installation. | 
| 654   Handle<Object> code_object_; | 654   Handle<Object> code_object_; | 
| 655 | 655 | 
| 656   // Helper functions for generating invokes. | 656   // Helper functions for generating invokes. | 
| 657   void InvokePrologue(const ParameterCount& expected, | 657   void InvokePrologue(const ParameterCount& expected, | 
| 658                       const ParameterCount& actual, | 658                       const ParameterCount& actual, | 
| 659                       Handle<Code> code_constant, | 659                       Handle<Code> code_constant, | 
| 660                       const Operand& code_operand, | 660                       const Operand& code_operand, | 
| 661                       Label* done, | 661                       Label* done, | 
| 662                       InvokeFlag flag, | 662                       InvokeFlag flag, | 
| 663                       Label::Distance done_near = Label::kFar, | 663                       Label::Distance done_near = Label::kFar, | 
| 664                       const CallWrapper& call_wrapper = NullCallWrapper(), | 664                       const CallWrapper& call_wrapper = NullCallWrapper(), | 
| 665                       CallKind call_kind = CALL_AS_METHOD); | 665                       CallKind call_kind = CALL_AS_METHOD); | 
| 666 | 666 | 
|  | 667   // Activation support. | 
|  | 668   void EnterFrame(StackFrame::Type type); | 
|  | 669   void LeaveFrame(StackFrame::Type type); | 
|  | 670 | 
| 667   void EnterExitFramePrologue(); | 671   void EnterExitFramePrologue(); | 
| 668   void EnterExitFrameEpilogue(int argc, bool save_doubles); | 672   void EnterExitFrameEpilogue(int argc, bool save_doubles); | 
| 669 | 673 | 
| 670   void LeaveExitFrameEpilogue(); | 674   void LeaveExitFrameEpilogue(); | 
| 671 | 675 | 
| 672   // Allocation support helpers. | 676   // Allocation support helpers. | 
| 673   void LoadAllocationTopHelper(Register result, | 677   void LoadAllocationTopHelper(Register result, | 
| 674                                Register scratch, | 678                                Register scratch, | 
| 675                                AllocationFlags flags); | 679                                AllocationFlags flags); | 
| 676   void UpdateAllocationTopHelper(Register result_end, Register scratch); | 680   void UpdateAllocationTopHelper(Register result_end, Register scratch); | 
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| 763   }                                                                       \ | 767   }                                                                       \ | 
| 764   masm-> | 768   masm-> | 
| 765 #else | 769 #else | 
| 766 #define ACCESS_MASM(masm) masm-> | 770 #define ACCESS_MASM(masm) masm-> | 
| 767 #endif | 771 #endif | 
| 768 | 772 | 
| 769 | 773 | 
| 770 } }  // namespace v8::internal | 774 } }  // namespace v8::internal | 
| 771 | 775 | 
| 772 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 776 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 
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