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Side by Side Diff: src/ppc/regexp-macro-assembler-ppc.h

Issue 714093002: PowerPC specific sub-directories. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 1 month ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_ARM_REGEXP_MACRO_ASSEMBLER_ARM_H_ 5 #ifndef V8_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
6 #define V8_ARM_REGEXP_MACRO_ASSEMBLER_ARM_H_ 6 #define V8_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
7 7
8 #include "src/arm/assembler-arm.h"
9 #include "src/arm/assembler-arm-inl.h"
10 #include "src/macro-assembler.h" 8 #include "src/macro-assembler.h"
9 #include "src/ppc/assembler-ppc.h"
10 #include "src/ppc/assembler-ppc-inl.h"
11 11
12 namespace v8 { 12 namespace v8 {
13 namespace internal { 13 namespace internal {
14 14
15 15
16 #ifndef V8_INTERPRETED_REGEXP 16 #ifndef V8_INTERPRETED_REGEXP
17 class RegExpMacroAssemblerARM: public NativeRegExpMacroAssembler { 17 class RegExpMacroAssemblerPPC : public NativeRegExpMacroAssembler {
18 public: 18 public:
19 RegExpMacroAssemblerARM(Mode mode, int registers_to_save, Zone* zone); 19 RegExpMacroAssemblerPPC(Mode mode, int registers_to_save, Zone* zone);
20 virtual ~RegExpMacroAssemblerARM(); 20 virtual ~RegExpMacroAssemblerPPC();
21 virtual int stack_limit_slack(); 21 virtual int stack_limit_slack();
22 virtual void AdvanceCurrentPosition(int by); 22 virtual void AdvanceCurrentPosition(int by);
23 virtual void AdvanceRegister(int reg, int by); 23 virtual void AdvanceRegister(int reg, int by);
24 virtual void Backtrack(); 24 virtual void Backtrack();
25 virtual void Bind(Label* label); 25 virtual void Bind(Label* label);
26 virtual void CheckAtStart(Label* on_at_start); 26 virtual void CheckAtStart(Label* on_at_start);
27 virtual void CheckCharacter(unsigned c, Label* on_equal); 27 virtual void CheckCharacter(unsigned c, Label* on_equal);
28 virtual void CheckCharacterAfterAnd(unsigned c, 28 virtual void CheckCharacterAfterAnd(unsigned c, unsigned mask,
29 unsigned mask,
30 Label* on_equal); 29 Label* on_equal);
31 virtual void CheckCharacterGT(uc16 limit, Label* on_greater); 30 virtual void CheckCharacterGT(uc16 limit, Label* on_greater);
32 virtual void CheckCharacterLT(uc16 limit, Label* on_less); 31 virtual void CheckCharacterLT(uc16 limit, Label* on_less);
33 // A "greedy loop" is a loop that is both greedy and with a simple 32 // A "greedy loop" is a loop that is both greedy and with a simple
34 // body. It has a particularly simple implementation. 33 // body. It has a particularly simple implementation.
35 virtual void CheckGreedyLoop(Label* on_tos_equals_current_position); 34 virtual void CheckGreedyLoop(Label* on_tos_equals_current_position);
36 virtual void CheckNotAtStart(Label* on_not_at_start); 35 virtual void CheckNotAtStart(Label* on_not_at_start);
37 virtual void CheckNotBackReference(int start_reg, Label* on_no_match); 36 virtual void CheckNotBackReference(int start_reg, Label* on_no_match);
38 virtual void CheckNotBackReferenceIgnoreCase(int start_reg, 37 virtual void CheckNotBackReferenceIgnoreCase(int start_reg,
39 Label* on_no_match); 38 Label* on_no_match);
40 virtual void CheckNotCharacter(unsigned c, Label* on_not_equal); 39 virtual void CheckNotCharacter(unsigned c, Label* on_not_equal);
41 virtual void CheckNotCharacterAfterAnd(unsigned c, 40 virtual void CheckNotCharacterAfterAnd(unsigned c, unsigned mask,
42 unsigned mask,
43 Label* on_not_equal); 41 Label* on_not_equal);
44 virtual void CheckNotCharacterAfterMinusAnd(uc16 c, 42 virtual void CheckNotCharacterAfterMinusAnd(uc16 c, uc16 minus, uc16 mask,
45 uc16 minus,
46 uc16 mask,
47 Label* on_not_equal); 43 Label* on_not_equal);
48 virtual void CheckCharacterInRange(uc16 from, 44 virtual void CheckCharacterInRange(uc16 from, uc16 to, Label* on_in_range);
49 uc16 to, 45 virtual void CheckCharacterNotInRange(uc16 from, uc16 to,
50 Label* on_in_range);
51 virtual void CheckCharacterNotInRange(uc16 from,
52 uc16 to,
53 Label* on_not_in_range); 46 Label* on_not_in_range);
54 virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set); 47 virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set);
55 48
56 // Checks whether the given offset from the current position is before 49 // Checks whether the given offset from the current position is before
57 // the end of the string. 50 // the end of the string.
58 virtual void CheckPosition(int cp_offset, Label* on_outside_input); 51 virtual void CheckPosition(int cp_offset, Label* on_outside_input);
59 virtual bool CheckSpecialCharacterClass(uc16 type, 52 virtual bool CheckSpecialCharacterClass(uc16 type, Label* on_no_match);
60 Label* on_no_match);
61 virtual void Fail(); 53 virtual void Fail();
62 virtual Handle<HeapObject> GetCode(Handle<String> source); 54 virtual Handle<HeapObject> GetCode(Handle<String> source);
63 virtual void GoTo(Label* label); 55 virtual void GoTo(Label* label);
64 virtual void IfRegisterGE(int reg, int comparand, Label* if_ge); 56 virtual void IfRegisterGE(int reg, int comparand, Label* if_ge);
65 virtual void IfRegisterLT(int reg, int comparand, Label* if_lt); 57 virtual void IfRegisterLT(int reg, int comparand, Label* if_lt);
66 virtual void IfRegisterEqPos(int reg, Label* if_eq); 58 virtual void IfRegisterEqPos(int reg, Label* if_eq);
67 virtual IrregexpImplementation Implementation(); 59 virtual IrregexpImplementation Implementation();
68 virtual void LoadCurrentCharacter(int cp_offset, 60 virtual void LoadCurrentCharacter(int cp_offset, Label* on_end_of_input,
69 Label* on_end_of_input,
70 bool check_bounds = true, 61 bool check_bounds = true,
71 int characters = 1); 62 int characters = 1);
72 virtual void PopCurrentPosition(); 63 virtual void PopCurrentPosition();
73 virtual void PopRegister(int register_index); 64 virtual void PopRegister(int register_index);
74 virtual void PushBacktrack(Label* label); 65 virtual void PushBacktrack(Label* label);
75 virtual void PushCurrentPosition(); 66 virtual void PushCurrentPosition();
76 virtual void PushRegister(int register_index, 67 virtual void PushRegister(int register_index,
77 StackCheckFlag check_stack_limit); 68 StackCheckFlag check_stack_limit);
78 virtual void ReadCurrentPositionFromRegister(int reg); 69 virtual void ReadCurrentPositionFromRegister(int reg);
79 virtual void ReadStackPointerFromRegister(int reg); 70 virtual void ReadStackPointerFromRegister(int reg);
80 virtual void SetCurrentPositionFromEnd(int by); 71 virtual void SetCurrentPositionFromEnd(int by);
81 virtual void SetRegister(int register_index, int to); 72 virtual void SetRegister(int register_index, int to);
82 virtual bool Succeed(); 73 virtual bool Succeed();
83 virtual void WriteCurrentPositionToRegister(int reg, int cp_offset); 74 virtual void WriteCurrentPositionToRegister(int reg, int cp_offset);
84 virtual void ClearRegisters(int reg_from, int reg_to); 75 virtual void ClearRegisters(int reg_from, int reg_to);
85 virtual void WriteStackPointerToRegister(int reg); 76 virtual void WriteStackPointerToRegister(int reg);
86 virtual bool CanReadUnaligned(); 77 virtual bool CanReadUnaligned();
87 78
88 // Called from RegExp if the stack-guard is triggered. 79 // Called from RegExp if the stack-guard is triggered.
89 // If the code object is relocated, the return address is fixed before 80 // If the code object is relocated, the return address is fixed before
90 // returning. 81 // returning.
91 static int CheckStackGuardState(Address* return_address, 82 static int CheckStackGuardState(Address* return_address, Code* re_code,
92 Code* re_code,
93 Address re_frame); 83 Address re_frame);
94 84
95 private: 85 private:
96 // Offsets from frame_pointer() of function parameters and stored registers. 86 // Offsets from frame_pointer() of function parameters and stored registers.
97 static const int kFramePointer = 0; 87 static const int kFramePointer = 0;
98 88
99 // Above the frame pointer - Stored registers and stack passed parameters. 89 // Above the frame pointer - Stored registers and stack passed parameters.
100 // Register 4..11. 90 // Register 25..31.
101 static const int kStoredRegisters = kFramePointer; 91 static const int kStoredRegisters = kFramePointer;
102 // Return address (stored from link register, read into pc on return). 92 // Return address (stored from link register, read into pc on return).
103 static const int kReturnAddress = kStoredRegisters + 8 * kPointerSize; 93 static const int kReturnAddress = kStoredRegisters + 7 * kPointerSize;
104 static const int kSecondaryReturnAddress = kReturnAddress + kPointerSize; 94 static const int kCallerFrame = kReturnAddress + kPointerSize;
105 // Stack parameters placed by caller. 95 // Stack parameters placed by caller.
106 static const int kRegisterOutput = kSecondaryReturnAddress + kPointerSize; 96 static const int kSecondaryReturnAddress =
107 static const int kNumOutputRegisters = kRegisterOutput + kPointerSize; 97 kCallerFrame + kStackFrameExtraParamSlot * kPointerSize;
108 static const int kStackHighEnd = kNumOutputRegisters + kPointerSize; 98 static const int kIsolate = kSecondaryReturnAddress + kPointerSize;
109 static const int kDirectCall = kStackHighEnd + kPointerSize;
110 static const int kIsolate = kDirectCall + kPointerSize;
111 99
112 // Below the frame pointer. 100 // Below the frame pointer.
113 // Register parameters stored by setup code. 101 // Register parameters stored by setup code.
114 static const int kInputEnd = kFramePointer - kPointerSize; 102 static const int kDirectCall = kFramePointer - kPointerSize;
103 static const int kStackHighEnd = kDirectCall - kPointerSize;
104 static const int kNumOutputRegisters = kStackHighEnd - kPointerSize;
105 static const int kRegisterOutput = kNumOutputRegisters - kPointerSize;
106 static const int kInputEnd = kRegisterOutput - kPointerSize;
115 static const int kInputStart = kInputEnd - kPointerSize; 107 static const int kInputStart = kInputEnd - kPointerSize;
116 static const int kStartIndex = kInputStart - kPointerSize; 108 static const int kStartIndex = kInputStart - kPointerSize;
117 static const int kInputString = kStartIndex - kPointerSize; 109 static const int kInputString = kStartIndex - kPointerSize;
118 // When adding local variables remember to push space for them in 110 // When adding local variables remember to push space for them in
119 // the frame in GetCode. 111 // the frame in GetCode.
120 static const int kSuccessfulCaptures = kInputString - kPointerSize; 112 static const int kSuccessfulCaptures = kInputString - kPointerSize;
121 static const int kInputStartMinusOne = kSuccessfulCaptures - kPointerSize; 113 static const int kInputStartMinusOne = kSuccessfulCaptures - kPointerSize;
122 // First register address. Following registers are below it on the stack. 114 // First register address. Following registers are below it on the stack.
123 static const int kRegisterZero = kInputStartMinusOne - kPointerSize; 115 static const int kRegisterZero = kInputStartMinusOne - kPointerSize;
124 116
125 // Initial size of code buffer. 117 // Initial size of code buffer.
126 static const size_t kRegExpCodeSize = 1024; 118 static const size_t kRegExpCodeSize = 1024;
127 119
128 static const int kBacktrackConstantPoolSize = 4;
129
130 // Load a number of characters at the given offset from the 120 // Load a number of characters at the given offset from the
131 // current position, into the current-character register. 121 // current position, into the current-character register.
132 void LoadCurrentCharacterUnchecked(int cp_offset, int character_count); 122 void LoadCurrentCharacterUnchecked(int cp_offset, int character_count);
133 123
134 // Check whether preemption has been requested. 124 // Check whether preemption has been requested.
135 void CheckPreemption(); 125 void CheckPreemption();
136 126
137 // Check whether we are exceeding the stack limit on the backtrack stack. 127 // Check whether we are exceeding the stack limit on the backtrack stack.
138 void CheckStackLimit(); 128 void CheckStackLimit();
139 129
140 130
141 // Generate a call to CheckStackGuardState. 131 // Generate a call to CheckStackGuardState.
142 void CallCheckStackGuardState(Register scratch); 132 void CallCheckStackGuardState(Register scratch);
143 133
144 // The ebp-relative location of a regexp register. 134 // The ebp-relative location of a regexp register.
145 MemOperand register_location(int register_index); 135 MemOperand register_location(int register_index);
146 136
147 // Register holding the current input position as negative offset from 137 // Register holding the current input position as negative offset from
148 // the end of the string. 138 // the end of the string.
149 inline Register current_input_offset() { return r6; } 139 inline Register current_input_offset() { return r27; }
150 140
151 // The register containing the current character after LoadCurrentCharacter. 141 // The register containing the current character after LoadCurrentCharacter.
152 inline Register current_character() { return r7; } 142 inline Register current_character() { return r28; }
153 143
154 // Register holding address of the end of the input string. 144 // Register holding address of the end of the input string.
155 inline Register end_of_input_address() { return r10; } 145 inline Register end_of_input_address() { return r30; }
156 146
157 // Register holding the frame address. Local variables, parameters and 147 // Register holding the frame address. Local variables, parameters and
158 // regexp registers are addressed relative to this. 148 // regexp registers are addressed relative to this.
159 inline Register frame_pointer() { return fp; } 149 inline Register frame_pointer() { return fp; }
160 150
161 // The register containing the backtrack stack top. Provides a meaningful 151 // The register containing the backtrack stack top. Provides a meaningful
162 // name to the register. 152 // name to the register.
163 inline Register backtrack_stackpointer() { return r8; } 153 inline Register backtrack_stackpointer() { return r29; }
164 154
165 // Register holding pointer to the current code object. 155 // Register holding pointer to the current code object.
166 inline Register code_pointer() { return r5; } 156 inline Register code_pointer() { return r26; }
167 157
168 // Byte size of chars in the string to match (decided by the Mode argument) 158 // Byte size of chars in the string to match (decided by the Mode argument)
169 inline int char_size() { return static_cast<int>(mode_); } 159 inline int char_size() { return static_cast<int>(mode_); }
170 160
171 // Equivalent to a conditional branch to the label, unless the label 161 // Equivalent to a conditional branch to the label, unless the label
172 // is NULL, in which case it is a conditional Backtrack. 162 // is NULL, in which case it is a conditional Backtrack.
173 void BranchOrBacktrack(Condition condition, Label* to); 163 void BranchOrBacktrack(Condition condition, Label* to, CRegister cr = cr7);
174 164
175 // Call and return internally in the generated code in a way that 165 // Call and return internally in the generated code in a way that
176 // is GC-safe (i.e., doesn't leave absolute code addresses on the stack) 166 // is GC-safe (i.e., doesn't leave absolute code addresses on the stack)
177 inline void SafeCall(Label* to, Condition cond = al); 167 inline void SafeCall(Label* to, Condition cond = al, CRegister cr = cr7);
178 inline void SafeReturn(); 168 inline void SafeReturn();
179 inline void SafeCallTarget(Label* name); 169 inline void SafeCallTarget(Label* name);
180 170
181 // Pushes the value of a register on the backtrack stack. Decrements the 171 // Pushes the value of a register on the backtrack stack. Decrements the
182 // stack pointer by a word size and stores the register's value there. 172 // stack pointer by a word size and stores the register's value there.
183 inline void Push(Register source); 173 inline void Push(Register source);
184 174
185 // Pops a value from the backtrack stack. Reads the word at the stack pointer 175 // Pops a value from the backtrack stack. Reads the word at the stack pointer
186 // and increments it by a word size. 176 // and increments it by a word size.
187 inline void Pop(Register target); 177 inline void Pop(Register target);
(...skipping 13 matching lines...) Expand all
201 int num_saved_registers_; 191 int num_saved_registers_;
202 192
203 // Labels used internally. 193 // Labels used internally.
204 Label entry_label_; 194 Label entry_label_;
205 Label start_label_; 195 Label start_label_;
206 Label success_label_; 196 Label success_label_;
207 Label backtrack_label_; 197 Label backtrack_label_;
208 Label exit_label_; 198 Label exit_label_;
209 Label check_preempt_label_; 199 Label check_preempt_label_;
210 Label stack_overflow_label_; 200 Label stack_overflow_label_;
201 Label internal_failure_label_;
211 }; 202 };
212 203
204 // Set of non-volatile registers saved/restored by generated regexp code.
205 const RegList kRegExpCalleeSaved =
206 1 << 25 | 1 << 26 | 1 << 27 | 1 << 28 | 1 << 29 | 1 << 30 | 1 << 31;
207
213 #endif // V8_INTERPRETED_REGEXP 208 #endif // V8_INTERPRETED_REGEXP
209 }
210 } // namespace v8::internal
214 211
215 212 #endif // V8_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
216 }} // namespace v8::internal
217
218 #endif // V8_ARM_REGEXP_MACRO_ASSEMBLER_ARM_H_
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