blob: ea745eefe83d51c20076f6604ffb06184fc9baf1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
// Copyright 2011 Google Inc. All Rights Reserved.
#include "assembler_x86.h"
#include "jni_internal.h"
#include "object.h"
#define __ assembler->
namespace art {
namespace x86 {
ByteArray* X86CreateResolutionTrampoline(Runtime::TrampolineType) {
UniquePtr<X86Assembler> assembler(static_cast<X86Assembler*>(Assembler::Create(kX86)));
// TODO: unimplemented
__ int3();
assembler->EmitSlowPaths();
size_t cs = assembler->CodeSize();
ByteArray* resolution_trampoline = ByteArray::Alloc(cs);
CHECK(resolution_trampoline != NULL);
MemoryRegion code(resolution_trampoline->GetData(), resolution_trampoline->GetLength());
assembler->FinalizeInstructions(code);
return resolution_trampoline;
}
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
|
