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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
// Copyright 2012 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_H_
#define V8_MACRO_ASSEMBLER_H_
// Helper types to make boolean flag easier to read at call-site.
enum InvokeFlag {
CALL_FUNCTION,
JUMP_FUNCTION
};
// Invalid depth in prototype chain.
const int kInvalidProtoDepth = -1;
#if V8_TARGET_ARCH_IA32
#include "assembler.h"
#include "ia32/assembler-ia32.h"
#include "ia32/assembler-ia32-inl.h"
#include "code.h" // must be after assembler_*.h
#include "ia32/macro-assembler-ia32.h"
#elif V8_TARGET_ARCH_X64
#include "assembler.h"
#include "x64/assembler-x64.h"
#include "x64/assembler-x64-inl.h"
#include "code.h" // must be after assembler_*.h
#include "x64/macro-assembler-x64.h"
#elif V8_TARGET_ARCH_ARM
#include "arm/constants-arm.h"
#include "assembler.h"
#include "arm/assembler-arm.h"
#include "arm/assembler-arm-inl.h"
#include "code.h" // must be after assembler_*.h
#include "arm/macro-assembler-arm.h"
#elif V8_TARGET_ARCH_MIPS
#include "mips/constants-mips.h"
#include "assembler.h"
#include "mips/assembler-mips.h"
#include "mips/assembler-mips-inl.h"
#include "code.h" // must be after assembler_*.h
#include "mips/macro-assembler-mips.h"
#else
#error Unsupported target architecture.
#endif
namespace v8 {
namespace internal {
class FrameScope {
public:
explicit FrameScope(MacroAssembler* masm, StackFrame::Type type)
: masm_(masm), type_(type), old_has_frame_(masm->has_frame()) {
masm->set_has_frame(true);
if (type != StackFrame::MANUAL && type_ != StackFrame::NONE) {
masm->EnterFrame(type);
}
}
~FrameScope() {
if (type_ != StackFrame::MANUAL && type_ != StackFrame::NONE) {
masm_->LeaveFrame(type_);
}
masm_->set_has_frame(old_has_frame_);
}
// Normally we generate the leave-frame code when this object goes
// out of scope. Sometimes we may need to generate the code somewhere else
// in addition. Calling this will achieve that, but the object stays in
// scope, the MacroAssembler is still marked as being in a frame scope, and
// the code will be generated again when it goes out of scope.
void GenerateLeaveFrame() {
masm_->LeaveFrame(type_);
}
private:
MacroAssembler* masm_;
StackFrame::Type type_;
bool old_has_frame_;
};
class AllowExternalCallThatCantCauseGC: public FrameScope {
public:
explicit AllowExternalCallThatCantCauseGC(MacroAssembler* masm)
: FrameScope(masm, StackFrame::NONE) { }
};
class NoCurrentFrameScope {
public:
explicit NoCurrentFrameScope(MacroAssembler* masm)
: masm_(masm), saved_(masm->has_frame()) {
masm->set_has_frame(false);
}
~NoCurrentFrameScope() {
masm_->set_has_frame(saved_);
}
private:
MacroAssembler* masm_;
bool saved_;
};
// Support for "structured" code comments.
#ifdef DEBUG
class Comment {
public:
Comment(MacroAssembler* masm, const char* msg);
~Comment();
private:
MacroAssembler* masm_;
const char* msg_;
};
#else
class Comment {
public:
Comment(MacroAssembler*, const char*) {}
};
#endif // DEBUG
} } // namespace v8::internal
#endif // V8_MACRO_ASSEMBLER_H_
|
