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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2011-2012 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 |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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_X64_FRAMES_X64_H_ | 28 #ifndef V8_SH4_FRAMES_SH4_H_ |
29 #define V8_X64_FRAMES_X64_H_ | 29 #define V8_SH4_FRAMES_SH4_H_ |
| 30 |
| 31 #include "memory.h" |
30 | 32 |
31 namespace v8 { | 33 namespace v8 { |
32 namespace internal { | 34 namespace internal { |
33 | 35 |
| 36 |
| 37 // Register lists |
| 38 // Note that the bit values must match those used in actual instruction encoding |
34 const int kNumRegs = 16; | 39 const int kNumRegs = 16; |
| 40 |
| 41 |
| 42 // Caller-saved registers |
35 const RegList kJSCallerSaved = | 43 const RegList kJSCallerSaved = |
36 1 << 0 | // rax | 44 1 << 0 | // r0 |
37 1 << 1 | // rcx | 45 1 << 1 | // r1 |
38 1 << 2 | // rdx | 46 1 << 2 | // r2 |
39 1 << 3 | // rbx - used as a caller-saved register in JavaScript code | 47 1 << 3 | // r3 |
40 1 << 7; // rdi - callee function | 48 1 << 4 | // r4 |
| 49 1 << 5 | // r5 |
| 50 1 << 6 | // r6 |
| 51 1 << 7; // r7 |
41 | 52 |
42 const int kNumJSCallerSaved = 5; | 53 const int kNumJSCallerSaved = 8; |
| 54 |
| 55 // Callee-saved registers preserved when switching from C to JavaScript |
| 56 const RegList kCalleeSaved = |
| 57 1 << 8 | // r8 |
| 58 1 << 9 | // r9 |
| 59 1 << 10 | // r10 |
| 60 1 << 11 | // r11 |
| 61 1 << 12 | // r12 (roots in JS) |
| 62 1 << 13 | // r13 (cp in JS) |
| 63 1 << 14; // r14 (fp in JS) |
| 64 |
| 65 const int kNumCalleeSaved = 7; |
| 66 |
43 | 67 |
44 typedef Object* JSCallerSavedBuffer[kNumJSCallerSaved]; | 68 typedef Object* JSCallerSavedBuffer[kNumJSCallerSaved]; |
45 | 69 |
| 70 |
46 // Number of registers for which space is reserved in safepoints. | 71 // Number of registers for which space is reserved in safepoints. |
47 const int kNumSafepointRegisters = 16; | 72 const int kNumSafepointRegisters = 16; |
48 | 73 |
49 // ---------------------------------------------------- | 74 // ---------------------------------------------------- |
50 | 75 |
| 76 |
51 class StackHandlerConstants : public AllStatic { | 77 class StackHandlerConstants : public AllStatic { |
52 public: | 78 public: |
53 static const int kNextOffset = 0 * kPointerSize; | 79 static const int kNextOffset = 0 * kPointerSize; |
54 static const int kCodeOffset = 1 * kPointerSize; | 80 static const int kCodeOffset = 1 * kPointerSize; |
55 static const int kStateOffset = 2 * kPointerSize; | 81 static const int kStateOffset = 2 * kPointerSize; |
56 static const int kContextOffset = 3 * kPointerSize; | 82 static const int kContextOffset = 3 * kPointerSize; |
57 static const int kFPOffset = 4 * kPointerSize; | 83 static const int kFPOffset = 4 * kPointerSize; |
58 | 84 |
59 static const int kSize = kFPOffset + kPointerSize; | 85 static const int kSize = kFPOffset + kPointerSize; |
60 }; | 86 }; |
61 | 87 |
62 | 88 |
63 class EntryFrameConstants : public AllStatic { | 89 class EntryFrameConstants : public AllStatic { |
64 public: | 90 public: |
65 #ifdef _WIN64 | 91 static const int kCallerFPOffset = -3 * kPointerSize; |
66 static const int kCallerFPOffset = -10 * kPointerSize; | |
67 #else | |
68 static const int kCallerFPOffset = -8 * kPointerSize; | |
69 #endif | |
70 static const int kArgvOffset = 6 * kPointerSize; | |
71 }; | 92 }; |
72 | 93 |
73 | 94 |
74 class ExitFrameConstants : public AllStatic { | 95 class ExitFrameConstants : public AllStatic { |
75 public: | 96 public: |
76 static const int kCodeOffset = -2 * kPointerSize; | 97 static const int kCodeOffset = -2 * kPointerSize; |
77 static const int kSPOffset = -1 * kPointerSize; | 98 static const int kSPOffset = -1 * kPointerSize; |
78 | 99 |
79 static const int kCallerFPOffset = +0 * kPointerSize; | 100 // The caller fields are below the frame pointer on the stack. |
80 static const int kCallerPCOffset = +1 * kPointerSize; | 101 static const int kCallerFPOffset = 0 * kPointerSize; |
| 102 // The calling JS function is below FP. |
| 103 static const int kCallerPCOffset = 1 * kPointerSize; |
81 | 104 |
82 // FP-relative displacement of the caller's SP. It points just | 105 // FP-relative displacement of the caller's SP. It points just |
83 // below the saved PC. | 106 // below the saved PC. |
84 static const int kCallerSPDisplacement = +2 * kPointerSize; | 107 static const int kCallerSPDisplacement = 2 * kPointerSize; |
85 }; | 108 }; |
86 | 109 |
87 | 110 |
88 class StandardFrameConstants : public AllStatic { | 111 class StandardFrameConstants : public AllStatic { |
89 public: | 112 public: |
90 // Fixed part of the frame consists of return address, caller fp, | 113 // Fixed part of the frame consists of return address, caller fp, |
91 // context and function. | 114 // context and function. |
92 static const int kFixedFrameSize = 4 * kPointerSize; | 115 static const int kFixedFrameSize = 4 * kPointerSize; |
93 static const int kExpressionsOffset = -3 * kPointerSize; | 116 static const int kExpressionsOffset = -3 * kPointerSize; |
94 static const int kMarkerOffset = -2 * kPointerSize; | 117 static const int kMarkerOffset = -2 * kPointerSize; |
95 static const int kContextOffset = -1 * kPointerSize; | 118 static const int kContextOffset = -1 * kPointerSize; |
96 static const int kCallerFPOffset = 0 * kPointerSize; | 119 static const int kCallerFPOffset = 0 * kPointerSize; |
97 static const int kCallerPCOffset = +1 * kPointerSize; | 120 static const int kCallerPCOffset = 1 * kPointerSize; |
98 static const int kCallerSPOffset = +2 * kPointerSize; | 121 static const int kCallerSPOffset = 2 * kPointerSize; |
99 }; | 122 }; |
100 | 123 |
101 | 124 |
102 class JavaScriptFrameConstants : public AllStatic { | 125 class JavaScriptFrameConstants : public AllStatic { |
103 public: | 126 public: |
104 // FP-relative. | 127 // FP-relative. |
105 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; | 128 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; |
106 static const int kLastParameterOffset = +2 * kPointerSize; | 129 static const int kLastParameterOffset = +2 * kPointerSize; |
107 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; | 130 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; |
108 | 131 |
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124 public: | 147 public: |
125 static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; | 148 static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; |
126 }; | 149 }; |
127 | 150 |
128 | 151 |
129 inline Object* JavaScriptFrame::function_slot_object() const { | 152 inline Object* JavaScriptFrame::function_slot_object() const { |
130 const int offset = JavaScriptFrameConstants::kFunctionOffset; | 153 const int offset = JavaScriptFrameConstants::kFunctionOffset; |
131 return Memory::Object_at(fp() + offset); | 154 return Memory::Object_at(fp() + offset); |
132 } | 155 } |
133 | 156 |
| 157 |
134 } } // namespace v8::internal | 158 } } // namespace v8::internal |
135 | 159 |
136 #endif // V8_X64_FRAMES_X64_H_ | 160 #endif // V8_SH4_FRAMES_SH4_H_ |
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