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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 are | 5 // modification, are permitted provided that the following conditions are |
| 6 // met: | 6 // 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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| 136 20, // s4 | 136 20, // s4 |
| 137 21, // s5 | 137 21, // s5 |
| 138 22, // s6 | 138 22, // s6 |
| 139 23, // s7 | 139 23, // s7 |
| 140 24, // t8 | 140 24, // t8 |
| 141 25, // t9 | 141 25, // t9 |
| 142 26, // k0 | 142 26, // k0 |
| 143 27, // k1 | 143 27, // k1 |
| 144 28, // gp | 144 28, // gp |
| 145 29, // sp | 145 29, // sp |
| 146 30, // s8_fp | 146 30, // fp |
| 147 31, // ra | 147 31, // ra |
| 148 }; | 148 }; |
| 149 return kNumbers[reg.code()]; | 149 return kNumbers[reg.code()]; |
| 150 } | 150 } |
| 151 | 151 |
| 152 | 152 |
| 153 Register ToRegister(int num) { | 153 Register ToRegister(int num) { |
| 154 ASSERT(num >= 0 && num < kNumRegisters); | 154 ASSERT(num >= 0 && num < kNumRegisters); |
| 155 const Register kRegisters[] = { | 155 const Register kRegisters[] = { |
| 156 zero_reg, | 156 zero_reg, |
| 157 at, | 157 at, |
| 158 v0, v1, | 158 v0, v1, |
| 159 a0, a1, a2, a3, | 159 a0, a1, a2, a3, |
| 160 t0, t1, t2, t3, t4, t5, t6, t7, | 160 t0, t1, t2, t3, t4, t5, t6, t7, |
| 161 s0, s1, s2, s3, s4, s5, s6, s7, | 161 s0, s1, s2, s3, s4, s5, s6, s7, |
| 162 t8, t9, | 162 t8, t9, |
| 163 k0, k1, | 163 k0, k1, |
| 164 gp, | 164 gp, |
| 165 sp, | 165 sp, |
| 166 s8_fp, | 166 fp, |
| 167 ra | 167 ra |
| 168 }; | 168 }; |
| 169 return kRegisters[num]; | 169 return kRegisters[num]; |
| 170 } | 170 } |
| 171 | 171 |
| 172 | 172 |
| 173 // ----------------------------------------------------------------------------- | 173 // ----------------------------------------------------------------------------- |
| 174 // Implementation of RelocInfo. | 174 // Implementation of RelocInfo. |
| 175 | 175 |
| 176 const int RelocInfo::kApplyMask = RelocInfo::kCodeTargetMask | | 176 const int RelocInfo::kApplyMask = RelocInfo::kCodeTargetMask | |
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| 230 offset_ = offset; | 230 offset_ = offset; |
| 231 } | 231 } |
| 232 | 232 |
| 233 | 233 |
| 234 // ----------------------------------------------------------------------------- | 234 // ----------------------------------------------------------------------------- |
| 235 // Specific instructions, constants, and masks. | 235 // Specific instructions, constants, and masks. |
| 236 | 236 |
| 237 static const int kNegOffset = 0x00008000; | 237 static const int kNegOffset = 0x00008000; |
| 238 // addiu(sp, sp, 4) aka Pop() operation or part of Pop(r) | 238 // addiu(sp, sp, 4) aka Pop() operation or part of Pop(r) |
| 239 // operations as post-increment of sp. | 239 // operations as post-increment of sp. |
| 240 const Instr kPopInstruction = ADDIU | (sp.code() << kRsShift) | 240 const Instr kPopInstruction = ADDIU | (kRegister_sp_Code << kRsShift) |
| 241 | (sp.code() << kRtShift) | (kPointerSize & kImm16Mask); | 241 | (kRegister_sp_Code << kRtShift) | (kPointerSize & kImm16Mask); |
| 242 // addiu(sp, sp, -4) part of Push(r) operation as pre-decrement of sp. | 242 // addiu(sp, sp, -4) part of Push(r) operation as pre-decrement of sp. |
| 243 const Instr kPushInstruction = ADDIU | (sp.code() << kRsShift) | 243 const Instr kPushInstruction = ADDIU | (kRegister_sp_Code << kRsShift) |
| 244 | (sp.code() << kRtShift) | (-kPointerSize & kImm16Mask); | 244 | (kRegister_sp_Code << kRtShift) | (-kPointerSize & kImm16Mask); |
| 245 // sw(r, MemOperand(sp, 0)) | 245 // sw(r, MemOperand(sp, 0)) |
| 246 const Instr kPushRegPattern = SW | (sp.code() << kRsShift) | 246 const Instr kPushRegPattern = SW | (kRegister_sp_Code << kRsShift) |
| 247 | (0 & kImm16Mask); | 247 | (0 & kImm16Mask); |
| 248 // lw(r, MemOperand(sp, 0)) | 248 // lw(r, MemOperand(sp, 0)) |
| 249 const Instr kPopRegPattern = LW | (sp.code() << kRsShift) | 249 const Instr kPopRegPattern = LW | (kRegister_sp_Code << kRsShift) |
| 250 | (0 & kImm16Mask); | 250 | (0 & kImm16Mask); |
| 251 | 251 |
| 252 const Instr kLwRegFpOffsetPattern = LW | (s8_fp.code() << kRsShift) | 252 const Instr kLwRegFpOffsetPattern = LW | (kRegister_fp_Code << kRsShift) |
| 253 | (0 & kImm16Mask); | 253 | (0 & kImm16Mask); |
| 254 | 254 |
| 255 const Instr kSwRegFpOffsetPattern = SW | (s8_fp.code() << kRsShift) | 255 const Instr kSwRegFpOffsetPattern = SW | (kRegister_fp_Code << kRsShift) |
| 256 | (0 & kImm16Mask); | 256 | (0 & kImm16Mask); |
| 257 | 257 |
| 258 const Instr kLwRegFpNegOffsetPattern = LW | (s8_fp.code() << kRsShift) | 258 const Instr kLwRegFpNegOffsetPattern = LW | (kRegister_fp_Code << kRsShift) |
| 259 | (kNegOffset & kImm16Mask); | 259 | (kNegOffset & kImm16Mask); |
| 260 | 260 |
| 261 const Instr kSwRegFpNegOffsetPattern = SW | (s8_fp.code() << kRsShift) | 261 const Instr kSwRegFpNegOffsetPattern = SW | (kRegister_fp_Code << kRsShift) |
| 262 | (kNegOffset & kImm16Mask); | 262 | (kNegOffset & kImm16Mask); |
| 263 // A mask for the Rt register for push, pop, lw, sw instructions. | 263 // A mask for the Rt register for push, pop, lw, sw instructions. |
| 264 const Instr kRtMask = kRtFieldMask; | 264 const Instr kRtMask = kRtFieldMask; |
| 265 const Instr kLwSwInstrTypeMask = 0xffe00000; | 265 const Instr kLwSwInstrTypeMask = 0xffe00000; |
| 266 const Instr kLwSwInstrArgumentMask = ~kLwSwInstrTypeMask; | 266 const Instr kLwSwInstrArgumentMask = ~kLwSwInstrTypeMask; |
| 267 const Instr kLwSwOffsetMask = kImm16Mask; | 267 const Instr kLwSwOffsetMask = kImm16Mask; |
| 268 | 268 |
| 269 | 269 |
| 270 // Spare buffer. | 270 // Spare buffer. |
| 271 static const int kMinimalBufferSize = 4 * KB; | 271 static const int kMinimalBufferSize = 4 * KB; |
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| 2270 } | 2270 } |
| 2271 | 2271 |
| 2272 if (patched) { | 2272 if (patched) { |
| 2273 CPU::FlushICache(pc+2, sizeof(Address)); | 2273 CPU::FlushICache(pc+2, sizeof(Address)); |
| 2274 } | 2274 } |
| 2275 } | 2275 } |
| 2276 | 2276 |
| 2277 } } // namespace v8::internal | 2277 } } // namespace v8::internal |
| 2278 | 2278 |
| 2279 #endif // V8_TARGET_ARCH_MIPS | 2279 #endif // V8_TARGET_ARCH_MIPS |
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