| // Copyright 2011 Google Inc. All Rights Reserved. |
| |
| #include "assembler_x86.h" |
| #include "jni_internal.h" |
| #include "object.h" |
| |
| #define __ assembler-> |
| |
| namespace art { |
| namespace x86 { |
| |
| typedef void (*ThrowAme)(Method*, Thread*); |
| |
| ByteArray* CreateAbstractMethodErrorStub() { |
| UniquePtr<X86Assembler> assembler( static_cast<X86Assembler*>(Assembler::Create(kX86)) ); |
| |
| // Pad stack to ensure 16-byte alignment |
| __ pushl(Immediate(0)); |
| __ fs()->pushl(Address::Absolute(Thread::SelfOffset())); // Thread* |
| __ pushl(EAX); // Method* |
| |
| // Call to throw AbstractMethodError |
| __ Call(ThreadOffset(OFFSETOF_MEMBER(Thread, pThrowAbstractMethodErrorFromCode)), |
| X86ManagedRegister::FromCpuRegister(ECX)); |
| |
| // Because the call above never returns, we do not need to do ESP+=16 here. |
| |
| __ int3(); |
| |
| assembler->EmitSlowPaths(); |
| |
| size_t cs = assembler->CodeSize(); |
| ByteArray* abstract_stub = ByteArray::Alloc(cs); |
| CHECK(abstract_stub != NULL); |
| MemoryRegion code(abstract_stub->GetData(), abstract_stub->GetLength()); |
| assembler->FinalizeInstructions(code); |
| |
| return abstract_stub; |
| } |
| |
| ByteArray* CreateJniStub() { |
| UniquePtr<X86Assembler> assembler( static_cast<X86Assembler*>(Assembler::Create(kX86)) ); |
| |
| // Pad stack to ensure 16-byte alignment |
| __ pushl(Immediate(0)); |
| __ pushl(Immediate(0)); |
| __ fs()->pushl(Address::Absolute(Thread::SelfOffset())); // Thread* |
| |
| __ Call(ThreadOffset(OFFSETOF_MEMBER(Thread, pFindNativeMethod)), |
| X86ManagedRegister::FromCpuRegister(ECX)); |
| |
| __ addl(ESP, Immediate(12)); |
| |
| Label no_native_code_found; // forward declaration |
| __ cmpl(EAX, Immediate(0)); |
| __ j(kEqual, &no_native_code_found); |
| |
| __ jmp(EAX); // Tail call into native code |
| |
| __ Bind(&no_native_code_found); |
| __ ret(); // return to caller to handle exception |
| |
| assembler->EmitSlowPaths(); |
| |
| size_t cs = assembler->CodeSize(); |
| ByteArray* jni_stub = ByteArray::Alloc(cs); |
| CHECK(jni_stub != NULL); |
| MemoryRegion code(jni_stub->GetData(), jni_stub->GetLength()); |
| assembler->FinalizeInstructions(code); |
| |
| return jni_stub; |
| } |
| |
| } // namespace x86 |
| } // namespace art |