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Unified Diff: src/ia32/macro-assembler-ia32.h

Issue 92068: Move backend specific files to separate directories. (Closed)
Patch Set: Added CPPPATH flag and made all includes use same base path. Created 11 years, 8 months ago
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Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
new file mode 100644
index 0000000000000000000000000000000000000000..ae3a8537dd7e318fb707119f5b3ea081ae1cabb7
--- /dev/null
+++ b/src/ia32/macro-assembler-ia32.h
@@ -0,0 +1,371 @@
+// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_MACRO_ASSEMBLER_IA32_H_
+#define V8_MACRO_ASSEMBLER_IA32_H_
+
+#include "assembler.h"
+
+namespace v8 { namespace internal {
+
+// Forward declaration.
+class JumpTarget;
+
+
+// Helper types to make flags easier to read at call sites.
+enum InvokeFlag {
+ CALL_FUNCTION,
+ JUMP_FUNCTION
+};
+
+enum CodeLocation {
+ IN_JAVASCRIPT,
+ IN_JS_ENTRY,
+ IN_C_ENTRY
+};
+
+enum HandlerType {
+ TRY_CATCH_HANDLER,
+ TRY_FINALLY_HANDLER,
+ JS_ENTRY_HANDLER
+};
+
+
+// MacroAssembler implements a collection of frequently used macros.
+class MacroAssembler: public Assembler {
+ public:
+ MacroAssembler(void* buffer, int size);
+
+ // ---------------------------------------------------------------------------
+ // GC Support
+
+ // Set the remembered set bit for [object+offset].
+ // object is the object being stored into, value is the object being stored.
+ // If offset is zero, then the scratch register contains the array index into
+ // the elements array represented as a Smi.
+ // All registers are clobbered by the operation.
+ void RecordWrite(Register object,
+ int offset,
+ Register value,
+ Register scratch);
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+ // ---------------------------------------------------------------------------
+ // Debugger Support
+
+ void SaveRegistersToMemory(RegList regs);
+ void RestoreRegistersFromMemory(RegList regs);
+ void PushRegistersFromMemory(RegList regs);
+ void PopRegistersToMemory(RegList regs);
+ void CopyRegistersFromStackToMemory(Register base,
+ Register scratch,
+ RegList regs);
+#endif
+
+ // ---------------------------------------------------------------------------
+ // Activation frames
+
+ void EnterInternalFrame() { EnterFrame(StackFrame::INTERNAL); }
+ void LeaveInternalFrame() { LeaveFrame(StackFrame::INTERNAL); }
+
+ void EnterConstructFrame() { EnterFrame(StackFrame::CONSTRUCT); }
+ void LeaveConstructFrame() { LeaveFrame(StackFrame::CONSTRUCT); }
+
+ // Enter specific kind of exit frame; either EXIT or
+ // EXIT_DEBUG. Expects the number of arguments in register eax and
+ // sets up the number of arguments in register edi and the pointer
+ // to the first argument in register esi.
+ void EnterExitFrame(StackFrame::Type type);
+
+ // Leave the current exit frame. Expects the return value in
+ // register eax:edx (untouched) and the pointer to the first
+ // argument in register esi.
+ void LeaveExitFrame(StackFrame::Type type);
+
+
+ // ---------------------------------------------------------------------------
+ // JavaScript invokes
+
+ // Invoke the JavaScript function code by either calling or jumping.
+ void InvokeCode(const Operand& code,
+ const ParameterCount& expected,
+ const ParameterCount& actual,
+ InvokeFlag flag);
+
+ void InvokeCode(Handle<Code> code,
+ const ParameterCount& expected,
+ const ParameterCount& actual,
+ RelocInfo::Mode rmode,
+ InvokeFlag flag);
+
+ // Invoke the JavaScript function in the given register. Changes the
+ // current context to the context in the function before invoking.
+ void InvokeFunction(Register function,
+ const ParameterCount& actual,
+ InvokeFlag flag);
+
+ // Invoke specified builtin JavaScript function. Adds an entry to
+ // the unresolved list if the name does not resolve.
+ void InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag);
+
+ // Store the code object for the given builtin in the target register.
+ void GetBuiltinEntry(Register target, Builtins::JavaScript id);
+
+ // Expression support
+ void Set(Register dst, const Immediate& x);
+ void Set(const Operand& dst, const Immediate& x);
+
+ // Compare object type for heap object.
+ // Incoming register is heap_object and outgoing register is map.
+ void CmpObjectType(Register heap_object, InstanceType type, Register map);
+
+ // Compare instance type for map.
+ void CmpInstanceType(Register map, InstanceType type);
+
+ // FCmp is similar to integer cmp, but requires unsigned
+ // jcc instructions (je, ja, jae, jb, jbe, je, and jz).
+ void FCmp();
+
+ // ---------------------------------------------------------------------------
+ // Exception handling
+
+ // Push a new try handler and link into try handler chain.
+ // The return address must be pushed before calling this helper.
+ // On exit, eax contains TOS (next_sp).
+ void PushTryHandler(CodeLocation try_location, HandlerType type);
+
+
+ // ---------------------------------------------------------------------------
+ // Inline caching support
+
+ // Generates code that verifies that the maps of objects in the
+ // prototype chain of object hasn't changed since the code was
+ // generated and branches to the miss label if any map has. If
+ // necessary the function also generates code for security check
+ // in case of global object holders. The scratch and holder
+ // registers are always clobbered, but the object register is only
+ // clobbered if it the same as the holder register. The function
+ // returns a register containing the holder - either object_reg or
+ // holder_reg.
+ Register CheckMaps(JSObject* object, Register object_reg,
+ JSObject* holder, Register holder_reg,
+ Register scratch, Label* miss);
+
+ // Generate code for checking access rights - used for security checks
+ // on access to global objects across environments. The holder register
+ // is left untouched, but the scratch register is clobbered.
+ void CheckAccessGlobalProxy(Register holder_reg,
+ Register scratch,
+ Label* miss);
+
+
+ // ---------------------------------------------------------------------------
+ // Support functions.
+
+ // Check if result is zero and op is negative.
+ void NegativeZeroTest(Register result, Register op, Label* then_label);
+
+ // Check if result is zero and op is negative in code using jump targets.
+ void NegativeZeroTest(CodeGenerator* cgen,
+ Register result,
+ Register op,
+ JumpTarget* then_target);
+
+ // Check if result is zero and any of op1 and op2 are negative.
+ // Register scratch is destroyed, and it must be different from op2.
+ void NegativeZeroTest(Register result, Register op1, Register op2,
+ Register scratch, Label* then_label);
+
+ // Try to get function prototype of a function and puts the value in
+ // the result register. Checks that the function really is a
+ // function and jumps to the miss label if the fast checks fail. The
+ // function register will be untouched; the other registers may be
+ // clobbered.
+ void TryGetFunctionPrototype(Register function,
+ Register result,
+ Register scratch,
+ Label* miss);
+
+ // Generates code for reporting that an illegal operation has
+ // occurred.
+ void IllegalOperation(int num_arguments);
+
+ // ---------------------------------------------------------------------------
+ // Runtime calls
+
+ // Call a code stub.
+ void CallStub(CodeStub* stub);
+
+ // Return from a code stub after popping its arguments.
+ void StubReturn(int argc);
+
+ // Call a runtime routine.
+ // Eventually this should be used for all C calls.
+ void CallRuntime(Runtime::Function* f, int num_arguments);
+
+ // Convenience function: Same as above, but takes the fid instead.
+ void CallRuntime(Runtime::FunctionId id, int num_arguments);
+
+ // Tail call of a runtime routine (jump).
+ // Like JumpToBuiltin, but also takes care of passing the number
+ // of arguments.
+ void TailCallRuntime(const ExternalReference& ext, int num_arguments);
+
+ // Jump to the builtin routine.
+ void JumpToBuiltin(const ExternalReference& ext);
+
+
+ // ---------------------------------------------------------------------------
+ // Utilities
+
+ void Ret();
+
+ struct Unresolved {
+ int pc;
+ uint32_t flags; // see Bootstrapper::FixupFlags decoders/encoders.
+ const char* name;
+ };
+ List<Unresolved>* unresolved() { return &unresolved_; }
+
+ Handle<Object> CodeObject() { return code_object_; }
+
+
+ // ---------------------------------------------------------------------------
+ // StatsCounter support
+
+ void SetCounter(StatsCounter* counter, int value);
+ void IncrementCounter(StatsCounter* counter, int value);
+ void DecrementCounter(StatsCounter* counter, int value);
+
+
+ // ---------------------------------------------------------------------------
+ // Debugging
+
+ // Calls Abort(msg) if the condition cc is not satisfied.
+ // Use --debug_code to enable.
+ void Assert(Condition cc, const char* msg);
+
+ // Like Assert(), but always enabled.
+ void Check(Condition cc, const char* msg);
+
+ // Print a message to stdout and abort execution.
+ void Abort(const char* msg);
+
+ // Verify restrictions about code generated in stubs.
+ void set_generating_stub(bool value) { generating_stub_ = value; }
+ bool generating_stub() { return generating_stub_; }
+ void set_allow_stub_calls(bool value) { allow_stub_calls_ = value; }
+ bool allow_stub_calls() { return allow_stub_calls_; }
+
+ private:
+ List<Unresolved> unresolved_;
+ bool generating_stub_;
+ bool allow_stub_calls_;
+ Handle<Object> code_object_; // This handle will be patched with the code
+ // code object on installation.
+
+ // Helper functions for generating invokes.
+ void InvokePrologue(const ParameterCount& expected,
+ const ParameterCount& actual,
+ Handle<Code> code_constant,
+ const Operand& code_operand,
+ Label* done,
+ InvokeFlag flag);
+
+ // Get the code for the given builtin. Returns if able to resolve
+ // the function in the 'resolved' flag.
+ Handle<Code> ResolveBuiltin(Builtins::JavaScript id, bool* resolved);
+
+ // Activation support.
+ void EnterFrame(StackFrame::Type type);
+ void LeaveFrame(StackFrame::Type type);
+};
+
+
+// The code patcher is used to patch (typically) small parts of code e.g. for
+// debugging and other types of instrumentation. When using the code patcher
+// the exact number of bytes specified must be emitted. Is not legal to emit
+// relocation information. If any of these constraints are violated it causes
+// an assertion.
+class CodePatcher {
+ public:
+ CodePatcher(byte* address, int size);
+ virtual ~CodePatcher();
+
+ // Macro assembler to emit code.
+ MacroAssembler* masm() { return &masm_; }
+
+ private:
+ byte* address_; // The address of the code being patched.
+ int size_; // Number of bytes of the expected patch size.
+ MacroAssembler masm_; // Macro assembler used to generate the code.
+};
+
+
+// -----------------------------------------------------------------------------
+// Static helper functions.
+
+// Generate an Operand for loading a field from an object.
+static inline Operand FieldOperand(Register object, int offset) {
+ return Operand(object, offset - kHeapObjectTag);
+}
+
+
+// Generate an Operand for loading an indexed field from an object.
+static inline Operand FieldOperand(Register object,
+ Register index,
+ ScaleFactor scale,
+ int offset) {
+ return Operand(object, index, scale, offset - kHeapObjectTag);
+}
+
+
+#ifdef GENERATED_CODE_COVERAGE
+extern void LogGeneratedCodeCoverage(const char* file_line);
+#define CODE_COVERAGE_STRINGIFY(x) #x
+#define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
+#define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
+#define ACCESS_MASM(masm) { \
+ byte* ia32_coverage_function = \
+ reinterpret_cast<byte*>(FUNCTION_ADDR(LogGeneratedCodeCoverage)); \
+ masm->pushfd(); \
+ masm->pushad(); \
+ masm->push(Immediate(reinterpret_cast<int>(&__FILE_LINE__))); \
+ masm->call(ia32_coverage_function, RelocInfo::RUNTIME_ENTRY); \
+ masm->pop(eax); \
+ masm->popad(); \
+ masm->popfd(); \
+ } \
+ masm->
+#else
+#define ACCESS_MASM(masm) masm->
+#endif
+
+
+} } // namespace v8::internal
+
+#endif // V8_MACRO_ASSEMBLER_IA32_H_
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