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Issue 20176: Moved some IA32 specific code from to the architecture dependent part of the ... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 11 years, 10 months ago
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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. 1 // Copyright (c) 1994-2006 Sun Microsystems Inc.
2 // All Rights Reserved. 2 // All Rights Reserved.
3 // 3 //
4 // Redistribution and use in source and binary forms, with or without 4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions 5 // modification, are permitted provided that the following conditions
6 // are met: 6 // are met:
7 // 7 //
8 // - Redistributions of source code must retain the above copyright notice, 8 // - Redistributions of source code must retain the above copyright notice,
9 // this list of conditions and the following disclaimer. 9 // this list of conditions and the following disclaimer.
10 // 10 //
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149 149
150 // ----------------------------------------------------------------------------- 150 // -----------------------------------------------------------------------------
151 // Implementation of RelocInfo 151 // Implementation of RelocInfo
152 152
153 153
154 const int RelocInfo::kApplyMask = 154 const int RelocInfo::kApplyMask =
155 RelocInfo::kCodeTargetMask | 1 << RelocInfo::RUNTIME_ENTRY | 155 RelocInfo::kCodeTargetMask | 1 << RelocInfo::RUNTIME_ENTRY |
156 1 << RelocInfo::JS_RETURN | 1 << RelocInfo::INTERNAL_REFERENCE; 156 1 << RelocInfo::JS_RETURN | 1 << RelocInfo::INTERNAL_REFERENCE;
157 157
158 158
159 void RelocInfo::patch_code(byte* instructions, int instruction_count) { 159 void RelocInfo::PatchCode(byte* instructions, int instruction_count) {
160 // Patch the code at the current address with the supplied instructions. 160 // Patch the code at the current address with the supplied instructions.
161 for (int i = 0; i < instruction_count; i++) { 161 for (int i = 0; i < instruction_count; i++) {
162 *(pc_ + i) = *(instructions + i); 162 *(pc_ + i) = *(instructions + i);
163 } 163 }
164 } 164 }
165 165
166 166
167 // Patch the code at the current PC with a call to the target address. 167 // Patch the code at the current PC with a call to the target address.
168 // Additional guard int3 instructions can be added if required. 168 // Additional guard int3 instructions can be added if required.
169 void RelocInfo::patch_code_with_call(Address target, int guard_bytes) { 169 void RelocInfo::PatchCodeWithCall(Address target, int guard_bytes) {
170 // Call instruction takes up 5 bytes and int3 takes up one byte. 170 // Call instruction takes up 5 bytes and int3 takes up one byte.
171 int code_size = 5 + guard_bytes; 171 int code_size = 5 + guard_bytes;
172 172
173 // Patch the code. 173 // Patch the code.
174 CodePatcher patcher(pc_, code_size); 174 CodePatcher patcher(pc_, code_size);
175 patcher.masm()->call(target, RelocInfo::NONE); 175 patcher.masm()->call(target, RelocInfo::NONE);
176 176
177 // Add the requested number of int3 instructions after the call. 177 // Add the requested number of int3 instructions after the call.
178 for (int i = 0; i < guard_bytes; i++) { 178 for (int i = 0; i < guard_bytes; i++) {
179 patcher.masm()->int3(); 179 patcher.masm()->int3();
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2142 ASSERT(bound_label.is_bound()); 2142 ASSERT(bound_label.is_bound());
2143 ASSERT(0 <= position); 2143 ASSERT(0 <= position);
2144 ASSERT(position + static_cast<int>(sizeof(uint32_t)) <= pc_offset()); 2144 ASSERT(position + static_cast<int>(sizeof(uint32_t)) <= pc_offset());
2145 ASSERT(long_at(position) == 0); // only initialize once! 2145 ASSERT(long_at(position) == 0); // only initialize once!
2146 2146
2147 uint32_t label_loc = reinterpret_cast<uint32_t>(addr_at(bound_label.pos())); 2147 uint32_t label_loc = reinterpret_cast<uint32_t>(addr_at(bound_label.pos()));
2148 long_at_put(position, label_loc); 2148 long_at_put(position, label_loc);
2149 } 2149 }
2150 2150
2151 } } // namespace v8::internal 2151 } } // namespace v8::internal
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