Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1 | // Copyright (c) 1994-2006 Sun Microsystems Inc. |
| 2 | // All Rights Reserved. |
| 3 | // |
| 4 | // Redistribution and use in source and binary forms, with or without |
| 5 | // modification, are permitted provided that the following conditions |
| 6 | // are met: |
| 7 | // |
| 8 | // - Redistributions of source code must retain the above copyright notice, |
| 9 | // this list of conditions and the following disclaimer. |
| 10 | // |
| 11 | // - Redistribution in binary form must reproduce the above copyright |
| 12 | // notice, this list of conditions and the following disclaimer in the |
| 13 | // documentation and/or other materials provided with the |
| 14 | // distribution. |
| 15 | // |
| 16 | // - Neither the name of Sun Microsystems or the names of contributors may |
| 17 | // be used to endorse or promote products derived from this software without |
| 18 | // specific prior written permission. |
| 19 | // |
| 20 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 23 | // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 24 | // COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 25 | // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 26 | // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 27 | // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 29 | // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 31 | // OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | |
| 33 | // The original source code covered by the above license above has been |
| 34 | // modified significantly by Google Inc. |
| 35 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 36 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 37 | #include "src/ppc/assembler-ppc.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 38 | |
| 39 | #if V8_TARGET_ARCH_PPC |
| 40 | |
| 41 | #include "src/base/bits.h" |
| 42 | #include "src/base/cpu.h" |
| 43 | #include "src/macro-assembler.h" |
| 44 | #include "src/ppc/assembler-ppc-inl.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 45 | |
| 46 | namespace v8 { |
| 47 | namespace internal { |
| 48 | |
| 49 | // Get the CPU features enabled by the build. |
| 50 | static unsigned CpuFeaturesImpliedByCompiler() { |
| 51 | unsigned answer = 0; |
| 52 | return answer; |
| 53 | } |
| 54 | |
| 55 | |
| 56 | void CpuFeatures::ProbeImpl(bool cross_compile) { |
| 57 | supported_ |= CpuFeaturesImpliedByCompiler(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 58 | icache_line_size_ = 128; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 59 | |
| 60 | // Only use statically determined features for cross compile (snapshot). |
| 61 | if (cross_compile) return; |
| 62 | |
| 63 | // Detect whether frim instruction is supported (POWER5+) |
| 64 | // For now we will just check for processors we know do not |
| 65 | // support it |
| 66 | #ifndef USE_SIMULATOR |
| 67 | // Probe for additional features at runtime. |
| 68 | base::CPU cpu; |
| 69 | #if V8_TARGET_ARCH_PPC64 |
| 70 | if (cpu.part() == base::CPU::PPC_POWER8) { |
| 71 | supported_ |= (1u << FPR_GPR_MOV); |
| 72 | } |
| 73 | #endif |
| 74 | if (cpu.part() == base::CPU::PPC_POWER6 || |
| 75 | cpu.part() == base::CPU::PPC_POWER7 || |
| 76 | cpu.part() == base::CPU::PPC_POWER8) { |
| 77 | supported_ |= (1u << LWSYNC); |
| 78 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 79 | if (cpu.part() == base::CPU::PPC_POWER7 || |
| 80 | cpu.part() == base::CPU::PPC_POWER8) { |
| 81 | supported_ |= (1u << ISELECT); |
| 82 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 83 | #if V8_OS_LINUX |
| 84 | if (!(cpu.part() == base::CPU::PPC_G5 || cpu.part() == base::CPU::PPC_G4)) { |
| 85 | // Assume support |
| 86 | supported_ |= (1u << FPU); |
| 87 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 88 | if (cpu.icache_line_size() != base::CPU::UNKNOWN_CACHE_LINE_SIZE) { |
| 89 | icache_line_size_ = cpu.icache_line_size(); |
| 90 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 91 | #elif V8_OS_AIX |
| 92 | // Assume support FP support and default cache line size |
| 93 | supported_ |= (1u << FPU); |
| 94 | #endif |
| 95 | #else // Simulator |
| 96 | supported_ |= (1u << FPU); |
| 97 | supported_ |= (1u << LWSYNC); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 98 | supported_ |= (1u << ISELECT); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 99 | #if V8_TARGET_ARCH_PPC64 |
| 100 | supported_ |= (1u << FPR_GPR_MOV); |
| 101 | #endif |
| 102 | #endif |
| 103 | } |
| 104 | |
| 105 | |
| 106 | void CpuFeatures::PrintTarget() { |
| 107 | const char* ppc_arch = NULL; |
| 108 | |
| 109 | #if V8_TARGET_ARCH_PPC64 |
| 110 | ppc_arch = "ppc64"; |
| 111 | #else |
| 112 | ppc_arch = "ppc"; |
| 113 | #endif |
| 114 | |
| 115 | printf("target %s\n", ppc_arch); |
| 116 | } |
| 117 | |
| 118 | |
| 119 | void CpuFeatures::PrintFeatures() { |
| 120 | printf("FPU=%d\n", CpuFeatures::IsSupported(FPU)); |
| 121 | } |
| 122 | |
| 123 | |
| 124 | Register ToRegister(int num) { |
| 125 | DCHECK(num >= 0 && num < kNumRegisters); |
| 126 | const Register kRegisters[] = {r0, sp, r2, r3, r4, r5, r6, r7, |
| 127 | r8, r9, r10, r11, ip, r13, r14, r15, |
| 128 | r16, r17, r18, r19, r20, r21, r22, r23, |
| 129 | r24, r25, r26, r27, r28, r29, r30, fp}; |
| 130 | return kRegisters[num]; |
| 131 | } |
| 132 | |
| 133 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 134 | // ----------------------------------------------------------------------------- |
| 135 | // Implementation of RelocInfo |
| 136 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 137 | const int RelocInfo::kApplyMask = 1 << RelocInfo::INTERNAL_REFERENCE | |
| 138 | 1 << RelocInfo::INTERNAL_REFERENCE_ENCODED; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 139 | |
| 140 | |
| 141 | bool RelocInfo::IsCodedSpecially() { |
| 142 | // The deserializer needs to know whether a pointer is specially |
| 143 | // coded. Being specially coded on PPC means that it is a lis/ori |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 144 | // instruction sequence or is a constant pool entry, and these are |
| 145 | // always the case inside code objects. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 146 | return true; |
| 147 | } |
| 148 | |
| 149 | |
| 150 | bool RelocInfo::IsInConstantPool() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 151 | if (FLAG_enable_embedded_constant_pool) { |
| 152 | Address constant_pool = host_->constant_pool(); |
| 153 | return (constant_pool && Assembler::IsConstantPoolLoadStart(pc_)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 154 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 155 | return false; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 156 | } |
| 157 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 158 | Address RelocInfo::wasm_memory_reference() { |
| 159 | DCHECK(IsWasmMemoryReference(rmode_)); |
| 160 | return Assembler::target_address_at(pc_, host_); |
| 161 | } |
| 162 | |
| 163 | uint32_t RelocInfo::wasm_memory_size_reference() { |
| 164 | DCHECK(IsWasmMemorySizeReference(rmode_)); |
| 165 | return static_cast<uint32_t>( |
| 166 | reinterpret_cast<intptr_t>(Assembler::target_address_at(pc_, host_))); |
| 167 | } |
| 168 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 169 | Address RelocInfo::wasm_global_reference() { |
| 170 | DCHECK(IsWasmGlobalReference(rmode_)); |
| 171 | return Assembler::target_address_at(pc_, host_); |
| 172 | } |
| 173 | |
| 174 | |
| 175 | void RelocInfo::unchecked_update_wasm_memory_reference( |
| 176 | Address address, ICacheFlushMode flush_mode) { |
| 177 | Assembler::set_target_address_at(isolate_, pc_, host_, address, flush_mode); |
| 178 | } |
| 179 | |
| 180 | void RelocInfo::unchecked_update_wasm_memory_size(uint32_t size, |
| 181 | ICacheFlushMode flush_mode) { |
| 182 | Assembler::set_target_address_at(isolate_, pc_, host_, |
| 183 | reinterpret_cast<Address>(size), flush_mode); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 184 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 185 | |
| 186 | // ----------------------------------------------------------------------------- |
| 187 | // Implementation of Operand and MemOperand |
| 188 | // See assembler-ppc-inl.h for inlined constructors |
| 189 | |
| 190 | Operand::Operand(Handle<Object> handle) { |
| 191 | AllowDeferredHandleDereference using_raw_address; |
| 192 | rm_ = no_reg; |
| 193 | // Verify all Objects referred by code are NOT in new space. |
| 194 | Object* obj = *handle; |
| 195 | if (obj->IsHeapObject()) { |
| 196 | DCHECK(!HeapObject::cast(obj)->GetHeap()->InNewSpace(obj)); |
| 197 | imm_ = reinterpret_cast<intptr_t>(handle.location()); |
| 198 | rmode_ = RelocInfo::EMBEDDED_OBJECT; |
| 199 | } else { |
| 200 | // no relocation needed |
| 201 | imm_ = reinterpret_cast<intptr_t>(obj); |
| 202 | rmode_ = kRelocInfo_NONEPTR; |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | |
| 207 | MemOperand::MemOperand(Register rn, int32_t offset) { |
| 208 | ra_ = rn; |
| 209 | rb_ = no_reg; |
| 210 | offset_ = offset; |
| 211 | } |
| 212 | |
| 213 | |
| 214 | MemOperand::MemOperand(Register ra, Register rb) { |
| 215 | ra_ = ra; |
| 216 | rb_ = rb; |
| 217 | offset_ = 0; |
| 218 | } |
| 219 | |
| 220 | |
| 221 | // ----------------------------------------------------------------------------- |
| 222 | // Specific instructions, constants, and masks. |
| 223 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 224 | |
| 225 | Assembler::Assembler(Isolate* isolate, void* buffer, int buffer_size) |
| 226 | : AssemblerBase(isolate, buffer, buffer_size), |
| 227 | recorded_ast_id_(TypeFeedbackId::None()), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 228 | constant_pool_builder_(kLoadPtrMaxReachBits, kLoadDoubleMaxReachBits), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 229 | positions_recorder_(this) { |
| 230 | reloc_info_writer.Reposition(buffer_ + buffer_size_, pc_); |
| 231 | |
| 232 | no_trampoline_pool_before_ = 0; |
| 233 | trampoline_pool_blocked_nesting_ = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 234 | constant_pool_entry_sharing_blocked_nesting_ = 0; |
| 235 | next_trampoline_check_ = kMaxInt; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 236 | internal_trampoline_exception_ = false; |
| 237 | last_bound_pos_ = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 238 | optimizable_cmpi_pos_ = -1; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 239 | trampoline_emitted_ = FLAG_force_long_branches; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 240 | tracked_branch_count_ = 0; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 241 | ClearRecordedAstId(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 242 | relocations_.reserve(128); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | |
| 246 | void Assembler::GetCode(CodeDesc* desc) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 247 | // Emit constant pool if necessary. |
| 248 | int constant_pool_offset = EmitConstantPool(); |
| 249 | |
| 250 | EmitRelocations(); |
| 251 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 252 | // Set up code descriptor. |
| 253 | desc->buffer = buffer_; |
| 254 | desc->buffer_size = buffer_size_; |
| 255 | desc->instr_size = pc_offset(); |
| 256 | desc->reloc_size = (buffer_ + buffer_size_) - reloc_info_writer.pos(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 257 | desc->constant_pool_size = |
| 258 | (constant_pool_offset ? desc->instr_size - constant_pool_offset : 0); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 259 | desc->origin = this; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 260 | desc->unwinding_info_size = 0; |
| 261 | desc->unwinding_info = nullptr; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | |
| 265 | void Assembler::Align(int m) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 266 | DCHECK(m >= 4 && base::bits::IsPowerOfTwo32(m)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 267 | DCHECK((pc_offset() & (kInstrSize - 1)) == 0); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 268 | while ((pc_offset() & (m - 1)) != 0) { |
| 269 | nop(); |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | |
| 274 | void Assembler::CodeTargetAlign() { Align(8); } |
| 275 | |
| 276 | |
| 277 | Condition Assembler::GetCondition(Instr instr) { |
| 278 | switch (instr & kCondMask) { |
| 279 | case BT: |
| 280 | return eq; |
| 281 | case BF: |
| 282 | return ne; |
| 283 | default: |
| 284 | UNIMPLEMENTED(); |
| 285 | } |
| 286 | return al; |
| 287 | } |
| 288 | |
| 289 | |
| 290 | bool Assembler::IsLis(Instr instr) { |
| 291 | return ((instr & kOpcodeMask) == ADDIS) && GetRA(instr).is(r0); |
| 292 | } |
| 293 | |
| 294 | |
| 295 | bool Assembler::IsLi(Instr instr) { |
| 296 | return ((instr & kOpcodeMask) == ADDI) && GetRA(instr).is(r0); |
| 297 | } |
| 298 | |
| 299 | |
| 300 | bool Assembler::IsAddic(Instr instr) { return (instr & kOpcodeMask) == ADDIC; } |
| 301 | |
| 302 | |
| 303 | bool Assembler::IsOri(Instr instr) { return (instr & kOpcodeMask) == ORI; } |
| 304 | |
| 305 | |
| 306 | bool Assembler::IsBranch(Instr instr) { return ((instr & kOpcodeMask) == BCX); } |
| 307 | |
| 308 | |
| 309 | Register Assembler::GetRA(Instr instr) { |
| 310 | Register reg; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 311 | reg.reg_code = Instruction::RAValue(instr); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 312 | return reg; |
| 313 | } |
| 314 | |
| 315 | |
| 316 | Register Assembler::GetRB(Instr instr) { |
| 317 | Register reg; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 318 | reg.reg_code = Instruction::RBValue(instr); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 319 | return reg; |
| 320 | } |
| 321 | |
| 322 | |
| 323 | #if V8_TARGET_ARCH_PPC64 |
| 324 | // This code assumes a FIXED_SEQUENCE for 64bit loads (lis/ori) |
| 325 | bool Assembler::Is64BitLoadIntoR12(Instr instr1, Instr instr2, Instr instr3, |
| 326 | Instr instr4, Instr instr5) { |
| 327 | // Check the instructions are indeed a five part load (into r12) |
| 328 | // 3d800000 lis r12, 0 |
| 329 | // 618c0000 ori r12, r12, 0 |
| 330 | // 798c07c6 rldicr r12, r12, 32, 31 |
| 331 | // 658c00c3 oris r12, r12, 195 |
| 332 | // 618ccd40 ori r12, r12, 52544 |
| 333 | return (((instr1 >> 16) == 0x3d80) && ((instr2 >> 16) == 0x618c) && |
| 334 | (instr3 == 0x798c07c6) && ((instr4 >> 16) == 0x658c) && |
| 335 | ((instr5 >> 16) == 0x618c)); |
| 336 | } |
| 337 | #else |
| 338 | // This code assumes a FIXED_SEQUENCE for 32bit loads (lis/ori) |
| 339 | bool Assembler::Is32BitLoadIntoR12(Instr instr1, Instr instr2) { |
| 340 | // Check the instruction is indeed a two part load (into r12) |
| 341 | // 3d802553 lis r12, 9555 |
| 342 | // 618c5000 ori r12, r12, 20480 |
| 343 | return (((instr1 >> 16) == 0x3d80) && ((instr2 >> 16) == 0x618c)); |
| 344 | } |
| 345 | #endif |
| 346 | |
| 347 | |
| 348 | bool Assembler::IsCmpRegister(Instr instr) { |
| 349 | return (((instr & kOpcodeMask) == EXT2) && |
| 350 | ((instr & kExt2OpcodeMask) == CMP)); |
| 351 | } |
| 352 | |
| 353 | |
| 354 | bool Assembler::IsRlwinm(Instr instr) { |
| 355 | return ((instr & kOpcodeMask) == RLWINMX); |
| 356 | } |
| 357 | |
| 358 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 359 | bool Assembler::IsAndi(Instr instr) { return ((instr & kOpcodeMask) == ANDIx); } |
| 360 | |
| 361 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 362 | #if V8_TARGET_ARCH_PPC64 |
| 363 | bool Assembler::IsRldicl(Instr instr) { |
| 364 | return (((instr & kOpcodeMask) == EXT5) && |
| 365 | ((instr & kExt5OpcodeMask) == RLDICL)); |
| 366 | } |
| 367 | #endif |
| 368 | |
| 369 | |
| 370 | bool Assembler::IsCmpImmediate(Instr instr) { |
| 371 | return ((instr & kOpcodeMask) == CMPI); |
| 372 | } |
| 373 | |
| 374 | |
| 375 | bool Assembler::IsCrSet(Instr instr) { |
| 376 | return (((instr & kOpcodeMask) == EXT1) && |
| 377 | ((instr & kExt1OpcodeMask) == CREQV)); |
| 378 | } |
| 379 | |
| 380 | |
| 381 | Register Assembler::GetCmpImmediateRegister(Instr instr) { |
| 382 | DCHECK(IsCmpImmediate(instr)); |
| 383 | return GetRA(instr); |
| 384 | } |
| 385 | |
| 386 | |
| 387 | int Assembler::GetCmpImmediateRawImmediate(Instr instr) { |
| 388 | DCHECK(IsCmpImmediate(instr)); |
| 389 | return instr & kOff16Mask; |
| 390 | } |
| 391 | |
| 392 | |
| 393 | // Labels refer to positions in the (to be) generated code. |
| 394 | // There are bound, linked, and unused labels. |
| 395 | // |
| 396 | // Bound labels refer to known positions in the already |
| 397 | // generated code. pos() is the position the label refers to. |
| 398 | // |
| 399 | // Linked labels refer to unknown positions in the code |
| 400 | // to be generated; pos() is the position of the last |
| 401 | // instruction using the label. |
| 402 | |
| 403 | |
| 404 | // The link chain is terminated by a negative code position (must be aligned) |
| 405 | const int kEndOfChain = -4; |
| 406 | |
| 407 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 408 | // Dummy opcodes for unbound label mov instructions or jump table entries. |
| 409 | enum { |
| 410 | kUnboundMovLabelOffsetOpcode = 0 << 26, |
| 411 | kUnboundAddLabelOffsetOpcode = 1 << 26, |
| 412 | kUnboundMovLabelAddrOpcode = 2 << 26, |
| 413 | kUnboundJumpTableEntryOpcode = 3 << 26 |
| 414 | }; |
| 415 | |
| 416 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 417 | int Assembler::target_at(int pos) { |
| 418 | Instr instr = instr_at(pos); |
| 419 | // check which type of branch this is 16 or 26 bit offset |
| 420 | int opcode = instr & kOpcodeMask; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 421 | int link; |
| 422 | switch (opcode) { |
| 423 | case BX: |
| 424 | link = SIGN_EXT_IMM26(instr & kImm26Mask); |
| 425 | link &= ~(kAAMask | kLKMask); // discard AA|LK bits if present |
| 426 | break; |
| 427 | case BCX: |
| 428 | link = SIGN_EXT_IMM16((instr & kImm16Mask)); |
| 429 | link &= ~(kAAMask | kLKMask); // discard AA|LK bits if present |
| 430 | break; |
| 431 | case kUnboundMovLabelOffsetOpcode: |
| 432 | case kUnboundAddLabelOffsetOpcode: |
| 433 | case kUnboundMovLabelAddrOpcode: |
| 434 | case kUnboundJumpTableEntryOpcode: |
| 435 | link = SIGN_EXT_IMM26(instr & kImm26Mask); |
| 436 | link <<= 2; |
| 437 | break; |
| 438 | default: |
| 439 | DCHECK(false); |
| 440 | return -1; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 441 | } |
| 442 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 443 | if (link == 0) return kEndOfChain; |
| 444 | return pos + link; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 448 | void Assembler::target_at_put(int pos, int target_pos, bool* is_branch) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 449 | Instr instr = instr_at(pos); |
| 450 | int opcode = instr & kOpcodeMask; |
| 451 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 452 | if (is_branch != nullptr) { |
| 453 | *is_branch = (opcode == BX || opcode == BCX); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 454 | } |
| 455 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 456 | switch (opcode) { |
| 457 | case BX: { |
| 458 | int imm26 = target_pos - pos; |
| 459 | CHECK(is_int26(imm26) && (imm26 & (kAAMask | kLKMask)) == 0); |
| 460 | if (imm26 == kInstrSize && !(instr & kLKMask)) { |
| 461 | // Branch to next instr without link. |
| 462 | instr = ORI; // nop: ori, 0,0,0 |
| 463 | } else { |
| 464 | instr &= ((~kImm26Mask) | kAAMask | kLKMask); |
| 465 | instr |= (imm26 & kImm26Mask); |
| 466 | } |
| 467 | instr_at_put(pos, instr); |
| 468 | break; |
| 469 | } |
| 470 | case BCX: { |
| 471 | int imm16 = target_pos - pos; |
| 472 | CHECK(is_int16(imm16) && (imm16 & (kAAMask | kLKMask)) == 0); |
| 473 | if (imm16 == kInstrSize && !(instr & kLKMask)) { |
| 474 | // Branch to next instr without link. |
| 475 | instr = ORI; // nop: ori, 0,0,0 |
| 476 | } else { |
| 477 | instr &= ((~kImm16Mask) | kAAMask | kLKMask); |
| 478 | instr |= (imm16 & kImm16Mask); |
| 479 | } |
| 480 | instr_at_put(pos, instr); |
| 481 | break; |
| 482 | } |
| 483 | case kUnboundMovLabelOffsetOpcode: { |
| 484 | // Load the position of the label relative to the generated code object |
| 485 | // pointer in a register. |
| 486 | Register dst = Register::from_code(instr_at(pos + kInstrSize)); |
| 487 | int32_t offset = target_pos + (Code::kHeaderSize - kHeapObjectTag); |
| 488 | CodePatcher patcher(isolate(), reinterpret_cast<byte*>(buffer_ + pos), 2, |
| 489 | CodePatcher::DONT_FLUSH); |
| 490 | patcher.masm()->bitwise_mov32(dst, offset); |
| 491 | break; |
| 492 | } |
| 493 | case kUnboundAddLabelOffsetOpcode: { |
| 494 | // dst = base + position + immediate |
| 495 | Instr operands = instr_at(pos + kInstrSize); |
| 496 | Register dst = Register::from_code((operands >> 21) & 0x1f); |
| 497 | Register base = Register::from_code((operands >> 16) & 0x1f); |
| 498 | int32_t offset = target_pos + SIGN_EXT_IMM16(operands & kImm16Mask); |
| 499 | CodePatcher patcher(isolate(), reinterpret_cast<byte*>(buffer_ + pos), 2, |
| 500 | CodePatcher::DONT_FLUSH); |
| 501 | patcher.masm()->bitwise_add32(dst, base, offset); |
| 502 | break; |
| 503 | } |
| 504 | case kUnboundMovLabelAddrOpcode: { |
| 505 | // Load the address of the label in a register. |
| 506 | Register dst = Register::from_code(instr_at(pos + kInstrSize)); |
| 507 | CodePatcher patcher(isolate(), reinterpret_cast<byte*>(buffer_ + pos), |
| 508 | kMovInstructionsNoConstantPool, |
| 509 | CodePatcher::DONT_FLUSH); |
| 510 | // Keep internal references relative until EmitRelocations. |
| 511 | patcher.masm()->bitwise_mov(dst, target_pos); |
| 512 | break; |
| 513 | } |
| 514 | case kUnboundJumpTableEntryOpcode: { |
| 515 | CodePatcher patcher(isolate(), reinterpret_cast<byte*>(buffer_ + pos), |
| 516 | kPointerSize / kInstrSize, CodePatcher::DONT_FLUSH); |
| 517 | // Keep internal references relative until EmitRelocations. |
| 518 | patcher.masm()->dp(target_pos); |
| 519 | break; |
| 520 | } |
| 521 | default: |
| 522 | DCHECK(false); |
| 523 | break; |
| 524 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | |
| 528 | int Assembler::max_reach_from(int pos) { |
| 529 | Instr instr = instr_at(pos); |
| 530 | int opcode = instr & kOpcodeMask; |
| 531 | |
| 532 | // check which type of branch this is 16 or 26 bit offset |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 533 | switch (opcode) { |
| 534 | case BX: |
| 535 | return 26; |
| 536 | case BCX: |
| 537 | return 16; |
| 538 | case kUnboundMovLabelOffsetOpcode: |
| 539 | case kUnboundAddLabelOffsetOpcode: |
| 540 | case kUnboundMovLabelAddrOpcode: |
| 541 | case kUnboundJumpTableEntryOpcode: |
| 542 | return 0; // no limit on reach |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | DCHECK(false); |
| 546 | return 0; |
| 547 | } |
| 548 | |
| 549 | |
| 550 | void Assembler::bind_to(Label* L, int pos) { |
| 551 | DCHECK(0 <= pos && pos <= pc_offset()); // must have a valid binding position |
| 552 | int32_t trampoline_pos = kInvalidSlotPos; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 553 | bool is_branch = false; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 554 | while (L->is_linked()) { |
| 555 | int fixup_pos = L->pos(); |
| 556 | int32_t offset = pos - fixup_pos; |
| 557 | int maxReach = max_reach_from(fixup_pos); |
| 558 | next(L); // call next before overwriting link with target at fixup_pos |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 559 | if (maxReach && is_intn(offset, maxReach) == false) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 560 | if (trampoline_pos == kInvalidSlotPos) { |
| 561 | trampoline_pos = get_trampoline_entry(); |
| 562 | CHECK(trampoline_pos != kInvalidSlotPos); |
| 563 | target_at_put(trampoline_pos, pos); |
| 564 | } |
| 565 | target_at_put(fixup_pos, trampoline_pos); |
| 566 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 567 | target_at_put(fixup_pos, pos, &is_branch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 568 | } |
| 569 | } |
| 570 | L->bind_to(pos); |
| 571 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 572 | if (!trampoline_emitted_ && is_branch) { |
| 573 | UntrackBranch(); |
| 574 | } |
| 575 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 576 | // Keep track of the last bound label so we don't eliminate any instructions |
| 577 | // before a bound label. |
| 578 | if (pos > last_bound_pos_) last_bound_pos_ = pos; |
| 579 | } |
| 580 | |
| 581 | |
| 582 | void Assembler::bind(Label* L) { |
| 583 | DCHECK(!L->is_bound()); // label can only be bound once |
| 584 | bind_to(L, pc_offset()); |
| 585 | } |
| 586 | |
| 587 | |
| 588 | void Assembler::next(Label* L) { |
| 589 | DCHECK(L->is_linked()); |
| 590 | int link = target_at(L->pos()); |
| 591 | if (link == kEndOfChain) { |
| 592 | L->Unuse(); |
| 593 | } else { |
| 594 | DCHECK(link >= 0); |
| 595 | L->link_to(link); |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | |
| 600 | bool Assembler::is_near(Label* L, Condition cond) { |
| 601 | DCHECK(L->is_bound()); |
| 602 | if (L->is_bound() == false) return false; |
| 603 | |
| 604 | int maxReach = ((cond == al) ? 26 : 16); |
| 605 | int offset = L->pos() - pc_offset(); |
| 606 | |
| 607 | return is_intn(offset, maxReach); |
| 608 | } |
| 609 | |
| 610 | |
| 611 | void Assembler::a_form(Instr instr, DoubleRegister frt, DoubleRegister fra, |
| 612 | DoubleRegister frb, RCBit r) { |
| 613 | emit(instr | frt.code() * B21 | fra.code() * B16 | frb.code() * B11 | r); |
| 614 | } |
| 615 | |
| 616 | |
| 617 | void Assembler::d_form(Instr instr, Register rt, Register ra, |
| 618 | const intptr_t val, bool signed_disp) { |
| 619 | if (signed_disp) { |
| 620 | if (!is_int16(val)) { |
| 621 | PrintF("val = %" V8PRIdPTR ", 0x%" V8PRIxPTR "\n", val, val); |
| 622 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 623 | CHECK(is_int16(val)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 624 | } else { |
| 625 | if (!is_uint16(val)) { |
| 626 | PrintF("val = %" V8PRIdPTR ", 0x%" V8PRIxPTR |
| 627 | ", is_unsigned_imm16(val)=%d, kImm16Mask=0x%x\n", |
| 628 | val, val, is_uint16(val), kImm16Mask); |
| 629 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 630 | CHECK(is_uint16(val)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 631 | } |
| 632 | emit(instr | rt.code() * B21 | ra.code() * B16 | (kImm16Mask & val)); |
| 633 | } |
| 634 | |
| 635 | |
| 636 | void Assembler::x_form(Instr instr, Register ra, Register rs, Register rb, |
| 637 | RCBit r) { |
| 638 | emit(instr | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | r); |
| 639 | } |
| 640 | |
| 641 | |
| 642 | void Assembler::xo_form(Instr instr, Register rt, Register ra, Register rb, |
| 643 | OEBit o, RCBit r) { |
| 644 | emit(instr | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | o | r); |
| 645 | } |
| 646 | |
| 647 | |
| 648 | void Assembler::md_form(Instr instr, Register ra, Register rs, int shift, |
| 649 | int maskbit, RCBit r) { |
| 650 | int sh0_4 = shift & 0x1f; |
| 651 | int sh5 = (shift >> 5) & 0x1; |
| 652 | int m0_4 = maskbit & 0x1f; |
| 653 | int m5 = (maskbit >> 5) & 0x1; |
| 654 | |
| 655 | emit(instr | rs.code() * B21 | ra.code() * B16 | sh0_4 * B11 | m0_4 * B6 | |
| 656 | m5 * B5 | sh5 * B1 | r); |
| 657 | } |
| 658 | |
| 659 | |
| 660 | void Assembler::mds_form(Instr instr, Register ra, Register rs, Register rb, |
| 661 | int maskbit, RCBit r) { |
| 662 | int m0_4 = maskbit & 0x1f; |
| 663 | int m5 = (maskbit >> 5) & 0x1; |
| 664 | |
| 665 | emit(instr | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | m0_4 * B6 | |
| 666 | m5 * B5 | r); |
| 667 | } |
| 668 | |
| 669 | |
| 670 | // Returns the next free trampoline entry. |
| 671 | int32_t Assembler::get_trampoline_entry() { |
| 672 | int32_t trampoline_entry = kInvalidSlotPos; |
| 673 | |
| 674 | if (!internal_trampoline_exception_) { |
| 675 | trampoline_entry = trampoline_.take_slot(); |
| 676 | |
| 677 | if (kInvalidSlotPos == trampoline_entry) { |
| 678 | internal_trampoline_exception_ = true; |
| 679 | } |
| 680 | } |
| 681 | return trampoline_entry; |
| 682 | } |
| 683 | |
| 684 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 685 | int Assembler::link(Label* L) { |
| 686 | int position; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 687 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 688 | position = L->pos(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 689 | } else { |
| 690 | if (L->is_linked()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 691 | position = L->pos(); // L's link |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 692 | } else { |
| 693 | // was: target_pos = kEndOfChain; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 694 | // However, using self to mark the first reference |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 695 | // should avoid most instances of branch offset overflow. See |
| 696 | // target_at() for where this is converted back to kEndOfChain. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 697 | position = pc_offset(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 698 | } |
| 699 | L->link_to(pc_offset()); |
| 700 | } |
| 701 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 702 | return position; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | |
| 706 | // Branch instructions. |
| 707 | |
| 708 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 709 | void Assembler::bclr(BOfield bo, int condition_bit, LKBit lk) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 710 | emit(EXT1 | bo | condition_bit * B16 | BCLRX | lk); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 714 | void Assembler::bcctr(BOfield bo, int condition_bit, LKBit lk) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 715 | emit(EXT1 | bo | condition_bit * B16 | BCCTRX | lk); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 716 | } |
| 717 | |
| 718 | |
| 719 | // Pseudo op - branch to link register |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 720 | void Assembler::blr() { bclr(BA, 0, LeaveLK); } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 721 | |
| 722 | |
| 723 | // Pseudo op - branch to count register -- used for "jump" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 724 | void Assembler::bctr() { bcctr(BA, 0, LeaveLK); } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 725 | |
| 726 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 727 | void Assembler::bctrl() { bcctr(BA, 0, SetLK); } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 728 | |
| 729 | |
| 730 | void Assembler::bc(int branch_offset, BOfield bo, int condition_bit, LKBit lk) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 731 | int imm16 = branch_offset; |
| 732 | CHECK(is_int16(imm16) && (imm16 & (kAAMask | kLKMask)) == 0); |
| 733 | emit(BCX | bo | condition_bit * B16 | (imm16 & kImm16Mask) | lk); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 734 | } |
| 735 | |
| 736 | |
| 737 | void Assembler::b(int branch_offset, LKBit lk) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 738 | int imm26 = branch_offset; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 739 | CHECK(is_int26(imm26) && (imm26 & (kAAMask | kLKMask)) == 0); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 740 | emit(BX | (imm26 & kImm26Mask) | lk); |
| 741 | } |
| 742 | |
| 743 | |
| 744 | void Assembler::xori(Register dst, Register src, const Operand& imm) { |
| 745 | d_form(XORI, src, dst, imm.imm_, false); |
| 746 | } |
| 747 | |
| 748 | |
| 749 | void Assembler::xoris(Register ra, Register rs, const Operand& imm) { |
| 750 | d_form(XORIS, rs, ra, imm.imm_, false); |
| 751 | } |
| 752 | |
| 753 | |
| 754 | void Assembler::xor_(Register dst, Register src1, Register src2, RCBit rc) { |
| 755 | x_form(EXT2 | XORX, dst, src1, src2, rc); |
| 756 | } |
| 757 | |
| 758 | |
| 759 | void Assembler::cntlzw_(Register ra, Register rs, RCBit rc) { |
| 760 | x_form(EXT2 | CNTLZWX, ra, rs, r0, rc); |
| 761 | } |
| 762 | |
| 763 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 764 | void Assembler::popcntw(Register ra, Register rs) { |
| 765 | emit(EXT2 | POPCNTW | rs.code() * B21 | ra.code() * B16); |
| 766 | } |
| 767 | |
| 768 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 769 | void Assembler::and_(Register ra, Register rs, Register rb, RCBit rc) { |
| 770 | x_form(EXT2 | ANDX, ra, rs, rb, rc); |
| 771 | } |
| 772 | |
| 773 | |
| 774 | void Assembler::rlwinm(Register ra, Register rs, int sh, int mb, int me, |
| 775 | RCBit rc) { |
| 776 | sh &= 0x1f; |
| 777 | mb &= 0x1f; |
| 778 | me &= 0x1f; |
| 779 | emit(RLWINMX | rs.code() * B21 | ra.code() * B16 | sh * B11 | mb * B6 | |
| 780 | me << 1 | rc); |
| 781 | } |
| 782 | |
| 783 | |
| 784 | void Assembler::rlwnm(Register ra, Register rs, Register rb, int mb, int me, |
| 785 | RCBit rc) { |
| 786 | mb &= 0x1f; |
| 787 | me &= 0x1f; |
| 788 | emit(RLWNMX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | mb * B6 | |
| 789 | me << 1 | rc); |
| 790 | } |
| 791 | |
| 792 | |
| 793 | void Assembler::rlwimi(Register ra, Register rs, int sh, int mb, int me, |
| 794 | RCBit rc) { |
| 795 | sh &= 0x1f; |
| 796 | mb &= 0x1f; |
| 797 | me &= 0x1f; |
| 798 | emit(RLWIMIX | rs.code() * B21 | ra.code() * B16 | sh * B11 | mb * B6 | |
| 799 | me << 1 | rc); |
| 800 | } |
| 801 | |
| 802 | |
| 803 | void Assembler::slwi(Register dst, Register src, const Operand& val, RCBit rc) { |
| 804 | DCHECK((32 > val.imm_) && (val.imm_ >= 0)); |
| 805 | rlwinm(dst, src, val.imm_, 0, 31 - val.imm_, rc); |
| 806 | } |
| 807 | |
| 808 | |
| 809 | void Assembler::srwi(Register dst, Register src, const Operand& val, RCBit rc) { |
| 810 | DCHECK((32 > val.imm_) && (val.imm_ >= 0)); |
| 811 | rlwinm(dst, src, 32 - val.imm_, val.imm_, 31, rc); |
| 812 | } |
| 813 | |
| 814 | |
| 815 | void Assembler::clrrwi(Register dst, Register src, const Operand& val, |
| 816 | RCBit rc) { |
| 817 | DCHECK((32 > val.imm_) && (val.imm_ >= 0)); |
| 818 | rlwinm(dst, src, 0, 0, 31 - val.imm_, rc); |
| 819 | } |
| 820 | |
| 821 | |
| 822 | void Assembler::clrlwi(Register dst, Register src, const Operand& val, |
| 823 | RCBit rc) { |
| 824 | DCHECK((32 > val.imm_) && (val.imm_ >= 0)); |
| 825 | rlwinm(dst, src, 0, val.imm_, 31, rc); |
| 826 | } |
| 827 | |
| 828 | |
| 829 | void Assembler::srawi(Register ra, Register rs, int sh, RCBit r) { |
| 830 | emit(EXT2 | SRAWIX | rs.code() * B21 | ra.code() * B16 | sh * B11 | r); |
| 831 | } |
| 832 | |
| 833 | |
| 834 | void Assembler::srw(Register dst, Register src1, Register src2, RCBit r) { |
| 835 | x_form(EXT2 | SRWX, dst, src1, src2, r); |
| 836 | } |
| 837 | |
| 838 | |
| 839 | void Assembler::slw(Register dst, Register src1, Register src2, RCBit r) { |
| 840 | x_form(EXT2 | SLWX, dst, src1, src2, r); |
| 841 | } |
| 842 | |
| 843 | |
| 844 | void Assembler::sraw(Register ra, Register rs, Register rb, RCBit r) { |
| 845 | x_form(EXT2 | SRAW, ra, rs, rb, r); |
| 846 | } |
| 847 | |
| 848 | |
| 849 | void Assembler::rotlw(Register ra, Register rs, Register rb, RCBit r) { |
| 850 | rlwnm(ra, rs, rb, 0, 31, r); |
| 851 | } |
| 852 | |
| 853 | |
| 854 | void Assembler::rotlwi(Register ra, Register rs, int sh, RCBit r) { |
| 855 | rlwinm(ra, rs, sh, 0, 31, r); |
| 856 | } |
| 857 | |
| 858 | |
| 859 | void Assembler::rotrwi(Register ra, Register rs, int sh, RCBit r) { |
| 860 | rlwinm(ra, rs, 32 - sh, 0, 31, r); |
| 861 | } |
| 862 | |
| 863 | |
| 864 | void Assembler::subi(Register dst, Register src, const Operand& imm) { |
| 865 | addi(dst, src, Operand(-(imm.imm_))); |
| 866 | } |
| 867 | |
| 868 | void Assembler::addc(Register dst, Register src1, Register src2, OEBit o, |
| 869 | RCBit r) { |
| 870 | xo_form(EXT2 | ADDCX, dst, src1, src2, o, r); |
| 871 | } |
| 872 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 873 | void Assembler::adde(Register dst, Register src1, Register src2, OEBit o, |
| 874 | RCBit r) { |
| 875 | xo_form(EXT2 | ADDEX, dst, src1, src2, o, r); |
| 876 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 877 | |
| 878 | void Assembler::addze(Register dst, Register src1, OEBit o, RCBit r) { |
| 879 | // a special xo_form |
| 880 | emit(EXT2 | ADDZEX | dst.code() * B21 | src1.code() * B16 | o | r); |
| 881 | } |
| 882 | |
| 883 | |
| 884 | void Assembler::sub(Register dst, Register src1, Register src2, OEBit o, |
| 885 | RCBit r) { |
| 886 | xo_form(EXT2 | SUBFX, dst, src2, src1, o, r); |
| 887 | } |
| 888 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 889 | void Assembler::subc(Register dst, Register src1, Register src2, OEBit o, |
| 890 | RCBit r) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 891 | xo_form(EXT2 | SUBFCX, dst, src2, src1, o, r); |
| 892 | } |
| 893 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 894 | void Assembler::sube(Register dst, Register src1, Register src2, OEBit o, |
| 895 | RCBit r) { |
| 896 | xo_form(EXT2 | SUBFEX, dst, src2, src1, o, r); |
| 897 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 898 | |
| 899 | void Assembler::subfic(Register dst, Register src, const Operand& imm) { |
| 900 | d_form(SUBFIC, dst, src, imm.imm_, true); |
| 901 | } |
| 902 | |
| 903 | |
| 904 | void Assembler::add(Register dst, Register src1, Register src2, OEBit o, |
| 905 | RCBit r) { |
| 906 | xo_form(EXT2 | ADDX, dst, src1, src2, o, r); |
| 907 | } |
| 908 | |
| 909 | |
| 910 | // Multiply low word |
| 911 | void Assembler::mullw(Register dst, Register src1, Register src2, OEBit o, |
| 912 | RCBit r) { |
| 913 | xo_form(EXT2 | MULLW, dst, src1, src2, o, r); |
| 914 | } |
| 915 | |
| 916 | |
| 917 | // Multiply hi word |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 918 | void Assembler::mulhw(Register dst, Register src1, Register src2, RCBit r) { |
| 919 | xo_form(EXT2 | MULHWX, dst, src1, src2, LeaveOE, r); |
| 920 | } |
| 921 | |
| 922 | |
| 923 | // Multiply hi word unsigned |
| 924 | void Assembler::mulhwu(Register dst, Register src1, Register src2, RCBit r) { |
| 925 | xo_form(EXT2 | MULHWUX, dst, src1, src2, LeaveOE, r); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 926 | } |
| 927 | |
| 928 | |
| 929 | // Divide word |
| 930 | void Assembler::divw(Register dst, Register src1, Register src2, OEBit o, |
| 931 | RCBit r) { |
| 932 | xo_form(EXT2 | DIVW, dst, src1, src2, o, r); |
| 933 | } |
| 934 | |
| 935 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 936 | // Divide word unsigned |
| 937 | void Assembler::divwu(Register dst, Register src1, Register src2, OEBit o, |
| 938 | RCBit r) { |
| 939 | xo_form(EXT2 | DIVWU, dst, src1, src2, o, r); |
| 940 | } |
| 941 | |
| 942 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 943 | void Assembler::addi(Register dst, Register src, const Operand& imm) { |
| 944 | DCHECK(!src.is(r0)); // use li instead to show intent |
| 945 | d_form(ADDI, dst, src, imm.imm_, true); |
| 946 | } |
| 947 | |
| 948 | |
| 949 | void Assembler::addis(Register dst, Register src, const Operand& imm) { |
| 950 | DCHECK(!src.is(r0)); // use lis instead to show intent |
| 951 | d_form(ADDIS, dst, src, imm.imm_, true); |
| 952 | } |
| 953 | |
| 954 | |
| 955 | void Assembler::addic(Register dst, Register src, const Operand& imm) { |
| 956 | d_form(ADDIC, dst, src, imm.imm_, true); |
| 957 | } |
| 958 | |
| 959 | |
| 960 | void Assembler::andi(Register ra, Register rs, const Operand& imm) { |
| 961 | d_form(ANDIx, rs, ra, imm.imm_, false); |
| 962 | } |
| 963 | |
| 964 | |
| 965 | void Assembler::andis(Register ra, Register rs, const Operand& imm) { |
| 966 | d_form(ANDISx, rs, ra, imm.imm_, false); |
| 967 | } |
| 968 | |
| 969 | |
| 970 | void Assembler::nor(Register dst, Register src1, Register src2, RCBit r) { |
| 971 | x_form(EXT2 | NORX, dst, src1, src2, r); |
| 972 | } |
| 973 | |
| 974 | |
| 975 | void Assembler::notx(Register dst, Register src, RCBit r) { |
| 976 | x_form(EXT2 | NORX, dst, src, src, r); |
| 977 | } |
| 978 | |
| 979 | |
| 980 | void Assembler::ori(Register ra, Register rs, const Operand& imm) { |
| 981 | d_form(ORI, rs, ra, imm.imm_, false); |
| 982 | } |
| 983 | |
| 984 | |
| 985 | void Assembler::oris(Register dst, Register src, const Operand& imm) { |
| 986 | d_form(ORIS, src, dst, imm.imm_, false); |
| 987 | } |
| 988 | |
| 989 | |
| 990 | void Assembler::orx(Register dst, Register src1, Register src2, RCBit rc) { |
| 991 | x_form(EXT2 | ORX, dst, src1, src2, rc); |
| 992 | } |
| 993 | |
| 994 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 995 | void Assembler::orc(Register dst, Register src1, Register src2, RCBit rc) { |
| 996 | x_form(EXT2 | ORC, dst, src1, src2, rc); |
| 997 | } |
| 998 | |
| 999 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1000 | void Assembler::cmpi(Register src1, const Operand& src2, CRegister cr) { |
| 1001 | intptr_t imm16 = src2.imm_; |
| 1002 | #if V8_TARGET_ARCH_PPC64 |
| 1003 | int L = 1; |
| 1004 | #else |
| 1005 | int L = 0; |
| 1006 | #endif |
| 1007 | DCHECK(is_int16(imm16)); |
| 1008 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1009 | imm16 &= kImm16Mask; |
| 1010 | emit(CMPI | cr.code() * B23 | L * B21 | src1.code() * B16 | imm16); |
| 1011 | } |
| 1012 | |
| 1013 | |
| 1014 | void Assembler::cmpli(Register src1, const Operand& src2, CRegister cr) { |
| 1015 | uintptr_t uimm16 = src2.imm_; |
| 1016 | #if V8_TARGET_ARCH_PPC64 |
| 1017 | int L = 1; |
| 1018 | #else |
| 1019 | int L = 0; |
| 1020 | #endif |
| 1021 | DCHECK(is_uint16(uimm16)); |
| 1022 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1023 | uimm16 &= kImm16Mask; |
| 1024 | emit(CMPLI | cr.code() * B23 | L * B21 | src1.code() * B16 | uimm16); |
| 1025 | } |
| 1026 | |
| 1027 | |
| 1028 | void Assembler::cmp(Register src1, Register src2, CRegister cr) { |
| 1029 | #if V8_TARGET_ARCH_PPC64 |
| 1030 | int L = 1; |
| 1031 | #else |
| 1032 | int L = 0; |
| 1033 | #endif |
| 1034 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1035 | emit(EXT2 | CMP | cr.code() * B23 | L * B21 | src1.code() * B16 | |
| 1036 | src2.code() * B11); |
| 1037 | } |
| 1038 | |
| 1039 | |
| 1040 | void Assembler::cmpl(Register src1, Register src2, CRegister cr) { |
| 1041 | #if V8_TARGET_ARCH_PPC64 |
| 1042 | int L = 1; |
| 1043 | #else |
| 1044 | int L = 0; |
| 1045 | #endif |
| 1046 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1047 | emit(EXT2 | CMPL | cr.code() * B23 | L * B21 | src1.code() * B16 | |
| 1048 | src2.code() * B11); |
| 1049 | } |
| 1050 | |
| 1051 | |
| 1052 | void Assembler::cmpwi(Register src1, const Operand& src2, CRegister cr) { |
| 1053 | intptr_t imm16 = src2.imm_; |
| 1054 | int L = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1055 | int pos = pc_offset(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1056 | DCHECK(is_int16(imm16)); |
| 1057 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1058 | imm16 &= kImm16Mask; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1059 | |
| 1060 | // For cmpwi against 0, save postition and cr for later examination |
| 1061 | // of potential optimization. |
| 1062 | if (imm16 == 0 && pos > 0 && last_bound_pos_ != pos) { |
| 1063 | optimizable_cmpi_pos_ = pos; |
| 1064 | cmpi_cr_ = cr; |
| 1065 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1066 | emit(CMPI | cr.code() * B23 | L * B21 | src1.code() * B16 | imm16); |
| 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | void Assembler::cmplwi(Register src1, const Operand& src2, CRegister cr) { |
| 1071 | uintptr_t uimm16 = src2.imm_; |
| 1072 | int L = 0; |
| 1073 | DCHECK(is_uint16(uimm16)); |
| 1074 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1075 | uimm16 &= kImm16Mask; |
| 1076 | emit(CMPLI | cr.code() * B23 | L * B21 | src1.code() * B16 | uimm16); |
| 1077 | } |
| 1078 | |
| 1079 | |
| 1080 | void Assembler::cmpw(Register src1, Register src2, CRegister cr) { |
| 1081 | int L = 0; |
| 1082 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1083 | emit(EXT2 | CMP | cr.code() * B23 | L * B21 | src1.code() * B16 | |
| 1084 | src2.code() * B11); |
| 1085 | } |
| 1086 | |
| 1087 | |
| 1088 | void Assembler::cmplw(Register src1, Register src2, CRegister cr) { |
| 1089 | int L = 0; |
| 1090 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 1091 | emit(EXT2 | CMPL | cr.code() * B23 | L * B21 | src1.code() * B16 | |
| 1092 | src2.code() * B11); |
| 1093 | } |
| 1094 | |
| 1095 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1096 | void Assembler::isel(Register rt, Register ra, Register rb, int cb) { |
| 1097 | emit(EXT2 | ISEL | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1098 | cb * B6); |
| 1099 | } |
| 1100 | |
| 1101 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1102 | // Pseudo op - load immediate |
| 1103 | void Assembler::li(Register dst, const Operand& imm) { |
| 1104 | d_form(ADDI, dst, r0, imm.imm_, true); |
| 1105 | } |
| 1106 | |
| 1107 | |
| 1108 | void Assembler::lis(Register dst, const Operand& imm) { |
| 1109 | d_form(ADDIS, dst, r0, imm.imm_, true); |
| 1110 | } |
| 1111 | |
| 1112 | |
| 1113 | // Pseudo op - move register |
| 1114 | void Assembler::mr(Register dst, Register src) { |
| 1115 | // actually or(dst, src, src) |
| 1116 | orx(dst, src, src); |
| 1117 | } |
| 1118 | |
| 1119 | |
| 1120 | void Assembler::lbz(Register dst, const MemOperand& src) { |
| 1121 | DCHECK(!src.ra_.is(r0)); |
| 1122 | d_form(LBZ, dst, src.ra(), src.offset(), true); |
| 1123 | } |
| 1124 | |
| 1125 | |
| 1126 | void Assembler::lbzx(Register rt, const MemOperand& src) { |
| 1127 | Register ra = src.ra(); |
| 1128 | Register rb = src.rb(); |
| 1129 | DCHECK(!ra.is(r0)); |
| 1130 | emit(EXT2 | LBZX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1131 | LeaveRC); |
| 1132 | } |
| 1133 | |
| 1134 | |
| 1135 | void Assembler::lbzux(Register rt, const MemOperand& src) { |
| 1136 | Register ra = src.ra(); |
| 1137 | Register rb = src.rb(); |
| 1138 | DCHECK(!ra.is(r0)); |
| 1139 | emit(EXT2 | LBZUX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1140 | LeaveRC); |
| 1141 | } |
| 1142 | |
| 1143 | |
| 1144 | void Assembler::lhz(Register dst, const MemOperand& src) { |
| 1145 | DCHECK(!src.ra_.is(r0)); |
| 1146 | d_form(LHZ, dst, src.ra(), src.offset(), true); |
| 1147 | } |
| 1148 | |
| 1149 | |
| 1150 | void Assembler::lhzx(Register rt, const MemOperand& src) { |
| 1151 | Register ra = src.ra(); |
| 1152 | Register rb = src.rb(); |
| 1153 | DCHECK(!ra.is(r0)); |
| 1154 | emit(EXT2 | LHZX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1155 | LeaveRC); |
| 1156 | } |
| 1157 | |
| 1158 | |
| 1159 | void Assembler::lhzux(Register rt, const MemOperand& src) { |
| 1160 | Register ra = src.ra(); |
| 1161 | Register rb = src.rb(); |
| 1162 | DCHECK(!ra.is(r0)); |
| 1163 | emit(EXT2 | LHZUX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1164 | LeaveRC); |
| 1165 | } |
| 1166 | |
| 1167 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1168 | void Assembler::lhax(Register rt, const MemOperand& src) { |
| 1169 | Register ra = src.ra(); |
| 1170 | Register rb = src.rb(); |
| 1171 | DCHECK(!ra.is(r0)); |
| 1172 | emit(EXT2 | LHAX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11); |
| 1173 | } |
| 1174 | |
| 1175 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1176 | void Assembler::lwz(Register dst, const MemOperand& src) { |
| 1177 | DCHECK(!src.ra_.is(r0)); |
| 1178 | d_form(LWZ, dst, src.ra(), src.offset(), true); |
| 1179 | } |
| 1180 | |
| 1181 | |
| 1182 | void Assembler::lwzu(Register dst, const MemOperand& src) { |
| 1183 | DCHECK(!src.ra_.is(r0)); |
| 1184 | d_form(LWZU, dst, src.ra(), src.offset(), true); |
| 1185 | } |
| 1186 | |
| 1187 | |
| 1188 | void Assembler::lwzx(Register rt, const MemOperand& src) { |
| 1189 | Register ra = src.ra(); |
| 1190 | Register rb = src.rb(); |
| 1191 | DCHECK(!ra.is(r0)); |
| 1192 | emit(EXT2 | LWZX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1193 | LeaveRC); |
| 1194 | } |
| 1195 | |
| 1196 | |
| 1197 | void Assembler::lwzux(Register rt, const MemOperand& src) { |
| 1198 | Register ra = src.ra(); |
| 1199 | Register rb = src.rb(); |
| 1200 | DCHECK(!ra.is(r0)); |
| 1201 | emit(EXT2 | LWZUX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1202 | LeaveRC); |
| 1203 | } |
| 1204 | |
| 1205 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1206 | void Assembler::lha(Register dst, const MemOperand& src) { |
| 1207 | DCHECK(!src.ra_.is(r0)); |
| 1208 | d_form(LHA, dst, src.ra(), src.offset(), true); |
| 1209 | } |
| 1210 | |
| 1211 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1212 | void Assembler::lwa(Register dst, const MemOperand& src) { |
| 1213 | #if V8_TARGET_ARCH_PPC64 |
| 1214 | int offset = src.offset(); |
| 1215 | DCHECK(!src.ra_.is(r0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1216 | CHECK(!(offset & 3) && is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1217 | offset = kImm16Mask & offset; |
| 1218 | emit(LD | dst.code() * B21 | src.ra().code() * B16 | offset | 2); |
| 1219 | #else |
| 1220 | lwz(dst, src); |
| 1221 | #endif |
| 1222 | } |
| 1223 | |
| 1224 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1225 | void Assembler::lwax(Register rt, const MemOperand& src) { |
| 1226 | #if V8_TARGET_ARCH_PPC64 |
| 1227 | Register ra = src.ra(); |
| 1228 | Register rb = src.rb(); |
| 1229 | DCHECK(!ra.is(r0)); |
| 1230 | emit(EXT2 | LWAX | rt.code() * B21 | ra.code() * B16 | rb.code() * B11); |
| 1231 | #else |
| 1232 | lwzx(rt, src); |
| 1233 | #endif |
| 1234 | } |
| 1235 | |
| 1236 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1237 | void Assembler::stb(Register dst, const MemOperand& src) { |
| 1238 | DCHECK(!src.ra_.is(r0)); |
| 1239 | d_form(STB, dst, src.ra(), src.offset(), true); |
| 1240 | } |
| 1241 | |
| 1242 | |
| 1243 | void Assembler::stbx(Register rs, const MemOperand& src) { |
| 1244 | Register ra = src.ra(); |
| 1245 | Register rb = src.rb(); |
| 1246 | DCHECK(!ra.is(r0)); |
| 1247 | emit(EXT2 | STBX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1248 | LeaveRC); |
| 1249 | } |
| 1250 | |
| 1251 | |
| 1252 | void Assembler::stbux(Register rs, const MemOperand& src) { |
| 1253 | Register ra = src.ra(); |
| 1254 | Register rb = src.rb(); |
| 1255 | DCHECK(!ra.is(r0)); |
| 1256 | emit(EXT2 | STBUX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1257 | LeaveRC); |
| 1258 | } |
| 1259 | |
| 1260 | |
| 1261 | void Assembler::sth(Register dst, const MemOperand& src) { |
| 1262 | DCHECK(!src.ra_.is(r0)); |
| 1263 | d_form(STH, dst, src.ra(), src.offset(), true); |
| 1264 | } |
| 1265 | |
| 1266 | |
| 1267 | void Assembler::sthx(Register rs, const MemOperand& src) { |
| 1268 | Register ra = src.ra(); |
| 1269 | Register rb = src.rb(); |
| 1270 | DCHECK(!ra.is(r0)); |
| 1271 | emit(EXT2 | STHX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1272 | LeaveRC); |
| 1273 | } |
| 1274 | |
| 1275 | |
| 1276 | void Assembler::sthux(Register rs, const MemOperand& src) { |
| 1277 | Register ra = src.ra(); |
| 1278 | Register rb = src.rb(); |
| 1279 | DCHECK(!ra.is(r0)); |
| 1280 | emit(EXT2 | STHUX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1281 | LeaveRC); |
| 1282 | } |
| 1283 | |
| 1284 | |
| 1285 | void Assembler::stw(Register dst, const MemOperand& src) { |
| 1286 | DCHECK(!src.ra_.is(r0)); |
| 1287 | d_form(STW, dst, src.ra(), src.offset(), true); |
| 1288 | } |
| 1289 | |
| 1290 | |
| 1291 | void Assembler::stwu(Register dst, const MemOperand& src) { |
| 1292 | DCHECK(!src.ra_.is(r0)); |
| 1293 | d_form(STWU, dst, src.ra(), src.offset(), true); |
| 1294 | } |
| 1295 | |
| 1296 | |
| 1297 | void Assembler::stwx(Register rs, const MemOperand& src) { |
| 1298 | Register ra = src.ra(); |
| 1299 | Register rb = src.rb(); |
| 1300 | DCHECK(!ra.is(r0)); |
| 1301 | emit(EXT2 | STWX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1302 | LeaveRC); |
| 1303 | } |
| 1304 | |
| 1305 | |
| 1306 | void Assembler::stwux(Register rs, const MemOperand& src) { |
| 1307 | Register ra = src.ra(); |
| 1308 | Register rb = src.rb(); |
| 1309 | DCHECK(!ra.is(r0)); |
| 1310 | emit(EXT2 | STWUX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1311 | LeaveRC); |
| 1312 | } |
| 1313 | |
| 1314 | |
| 1315 | void Assembler::extsb(Register rs, Register ra, RCBit rc) { |
| 1316 | emit(EXT2 | EXTSB | ra.code() * B21 | rs.code() * B16 | rc); |
| 1317 | } |
| 1318 | |
| 1319 | |
| 1320 | void Assembler::extsh(Register rs, Register ra, RCBit rc) { |
| 1321 | emit(EXT2 | EXTSH | ra.code() * B21 | rs.code() * B16 | rc); |
| 1322 | } |
| 1323 | |
| 1324 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1325 | void Assembler::extsw(Register rs, Register ra, RCBit rc) { |
| 1326 | #if V8_TARGET_ARCH_PPC64 |
| 1327 | emit(EXT2 | EXTSW | ra.code() * B21 | rs.code() * B16 | rc); |
| 1328 | #else |
| 1329 | // nop on 32-bit |
| 1330 | DCHECK(rs.is(ra) && rc == LeaveRC); |
| 1331 | #endif |
| 1332 | } |
| 1333 | |
| 1334 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1335 | void Assembler::neg(Register rt, Register ra, OEBit o, RCBit r) { |
| 1336 | emit(EXT2 | NEGX | rt.code() * B21 | ra.code() * B16 | o | r); |
| 1337 | } |
| 1338 | |
| 1339 | |
| 1340 | void Assembler::andc(Register dst, Register src1, Register src2, RCBit rc) { |
| 1341 | x_form(EXT2 | ANDCX, dst, src1, src2, rc); |
| 1342 | } |
| 1343 | |
| 1344 | |
| 1345 | #if V8_TARGET_ARCH_PPC64 |
| 1346 | // 64bit specific instructions |
| 1347 | void Assembler::ld(Register rd, const MemOperand& src) { |
| 1348 | int offset = src.offset(); |
| 1349 | DCHECK(!src.ra_.is(r0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1350 | CHECK(!(offset & 3) && is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1351 | offset = kImm16Mask & offset; |
| 1352 | emit(LD | rd.code() * B21 | src.ra().code() * B16 | offset); |
| 1353 | } |
| 1354 | |
| 1355 | |
| 1356 | void Assembler::ldx(Register rd, const MemOperand& src) { |
| 1357 | Register ra = src.ra(); |
| 1358 | Register rb = src.rb(); |
| 1359 | DCHECK(!ra.is(r0)); |
| 1360 | emit(EXT2 | LDX | rd.code() * B21 | ra.code() * B16 | rb.code() * B11); |
| 1361 | } |
| 1362 | |
| 1363 | |
| 1364 | void Assembler::ldu(Register rd, const MemOperand& src) { |
| 1365 | int offset = src.offset(); |
| 1366 | DCHECK(!src.ra_.is(r0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1367 | CHECK(!(offset & 3) && is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1368 | offset = kImm16Mask & offset; |
| 1369 | emit(LD | rd.code() * B21 | src.ra().code() * B16 | offset | 1); |
| 1370 | } |
| 1371 | |
| 1372 | |
| 1373 | void Assembler::ldux(Register rd, const MemOperand& src) { |
| 1374 | Register ra = src.ra(); |
| 1375 | Register rb = src.rb(); |
| 1376 | DCHECK(!ra.is(r0)); |
| 1377 | emit(EXT2 | LDUX | rd.code() * B21 | ra.code() * B16 | rb.code() * B11); |
| 1378 | } |
| 1379 | |
| 1380 | |
| 1381 | void Assembler::std(Register rs, const MemOperand& src) { |
| 1382 | int offset = src.offset(); |
| 1383 | DCHECK(!src.ra_.is(r0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1384 | CHECK(!(offset & 3) && is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1385 | offset = kImm16Mask & offset; |
| 1386 | emit(STD | rs.code() * B21 | src.ra().code() * B16 | offset); |
| 1387 | } |
| 1388 | |
| 1389 | |
| 1390 | void Assembler::stdx(Register rs, const MemOperand& src) { |
| 1391 | Register ra = src.ra(); |
| 1392 | Register rb = src.rb(); |
| 1393 | DCHECK(!ra.is(r0)); |
| 1394 | emit(EXT2 | STDX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11); |
| 1395 | } |
| 1396 | |
| 1397 | |
| 1398 | void Assembler::stdu(Register rs, const MemOperand& src) { |
| 1399 | int offset = src.offset(); |
| 1400 | DCHECK(!src.ra_.is(r0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1401 | CHECK(!(offset & 3) && is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1402 | offset = kImm16Mask & offset; |
| 1403 | emit(STD | rs.code() * B21 | src.ra().code() * B16 | offset | 1); |
| 1404 | } |
| 1405 | |
| 1406 | |
| 1407 | void Assembler::stdux(Register rs, const MemOperand& src) { |
| 1408 | Register ra = src.ra(); |
| 1409 | Register rb = src.rb(); |
| 1410 | DCHECK(!ra.is(r0)); |
| 1411 | emit(EXT2 | STDUX | rs.code() * B21 | ra.code() * B16 | rb.code() * B11); |
| 1412 | } |
| 1413 | |
| 1414 | |
| 1415 | void Assembler::rldic(Register ra, Register rs, int sh, int mb, RCBit r) { |
| 1416 | md_form(EXT5 | RLDIC, ra, rs, sh, mb, r); |
| 1417 | } |
| 1418 | |
| 1419 | |
| 1420 | void Assembler::rldicl(Register ra, Register rs, int sh, int mb, RCBit r) { |
| 1421 | md_form(EXT5 | RLDICL, ra, rs, sh, mb, r); |
| 1422 | } |
| 1423 | |
| 1424 | |
| 1425 | void Assembler::rldcl(Register ra, Register rs, Register rb, int mb, RCBit r) { |
| 1426 | mds_form(EXT5 | RLDCL, ra, rs, rb, mb, r); |
| 1427 | } |
| 1428 | |
| 1429 | |
| 1430 | void Assembler::rldicr(Register ra, Register rs, int sh, int me, RCBit r) { |
| 1431 | md_form(EXT5 | RLDICR, ra, rs, sh, me, r); |
| 1432 | } |
| 1433 | |
| 1434 | |
| 1435 | void Assembler::sldi(Register dst, Register src, const Operand& val, RCBit rc) { |
| 1436 | DCHECK((64 > val.imm_) && (val.imm_ >= 0)); |
| 1437 | rldicr(dst, src, val.imm_, 63 - val.imm_, rc); |
| 1438 | } |
| 1439 | |
| 1440 | |
| 1441 | void Assembler::srdi(Register dst, Register src, const Operand& val, RCBit rc) { |
| 1442 | DCHECK((64 > val.imm_) && (val.imm_ >= 0)); |
| 1443 | rldicl(dst, src, 64 - val.imm_, val.imm_, rc); |
| 1444 | } |
| 1445 | |
| 1446 | |
| 1447 | void Assembler::clrrdi(Register dst, Register src, const Operand& val, |
| 1448 | RCBit rc) { |
| 1449 | DCHECK((64 > val.imm_) && (val.imm_ >= 0)); |
| 1450 | rldicr(dst, src, 0, 63 - val.imm_, rc); |
| 1451 | } |
| 1452 | |
| 1453 | |
| 1454 | void Assembler::clrldi(Register dst, Register src, const Operand& val, |
| 1455 | RCBit rc) { |
| 1456 | DCHECK((64 > val.imm_) && (val.imm_ >= 0)); |
| 1457 | rldicl(dst, src, 0, val.imm_, rc); |
| 1458 | } |
| 1459 | |
| 1460 | |
| 1461 | void Assembler::rldimi(Register ra, Register rs, int sh, int mb, RCBit r) { |
| 1462 | md_form(EXT5 | RLDIMI, ra, rs, sh, mb, r); |
| 1463 | } |
| 1464 | |
| 1465 | |
| 1466 | void Assembler::sradi(Register ra, Register rs, int sh, RCBit r) { |
| 1467 | int sh0_4 = sh & 0x1f; |
| 1468 | int sh5 = (sh >> 5) & 0x1; |
| 1469 | |
| 1470 | emit(EXT2 | SRADIX | rs.code() * B21 | ra.code() * B16 | sh0_4 * B11 | |
| 1471 | sh5 * B1 | r); |
| 1472 | } |
| 1473 | |
| 1474 | |
| 1475 | void Assembler::srd(Register dst, Register src1, Register src2, RCBit r) { |
| 1476 | x_form(EXT2 | SRDX, dst, src1, src2, r); |
| 1477 | } |
| 1478 | |
| 1479 | |
| 1480 | void Assembler::sld(Register dst, Register src1, Register src2, RCBit r) { |
| 1481 | x_form(EXT2 | SLDX, dst, src1, src2, r); |
| 1482 | } |
| 1483 | |
| 1484 | |
| 1485 | void Assembler::srad(Register ra, Register rs, Register rb, RCBit r) { |
| 1486 | x_form(EXT2 | SRAD, ra, rs, rb, r); |
| 1487 | } |
| 1488 | |
| 1489 | |
| 1490 | void Assembler::rotld(Register ra, Register rs, Register rb, RCBit r) { |
| 1491 | rldcl(ra, rs, rb, 0, r); |
| 1492 | } |
| 1493 | |
| 1494 | |
| 1495 | void Assembler::rotldi(Register ra, Register rs, int sh, RCBit r) { |
| 1496 | rldicl(ra, rs, sh, 0, r); |
| 1497 | } |
| 1498 | |
| 1499 | |
| 1500 | void Assembler::rotrdi(Register ra, Register rs, int sh, RCBit r) { |
| 1501 | rldicl(ra, rs, 64 - sh, 0, r); |
| 1502 | } |
| 1503 | |
| 1504 | |
| 1505 | void Assembler::cntlzd_(Register ra, Register rs, RCBit rc) { |
| 1506 | x_form(EXT2 | CNTLZDX, ra, rs, r0, rc); |
| 1507 | } |
| 1508 | |
| 1509 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1510 | void Assembler::popcntd(Register ra, Register rs) { |
| 1511 | emit(EXT2 | POPCNTD | rs.code() * B21 | ra.code() * B16); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1512 | } |
| 1513 | |
| 1514 | |
| 1515 | void Assembler::mulld(Register dst, Register src1, Register src2, OEBit o, |
| 1516 | RCBit r) { |
| 1517 | xo_form(EXT2 | MULLD, dst, src1, src2, o, r); |
| 1518 | } |
| 1519 | |
| 1520 | |
| 1521 | void Assembler::divd(Register dst, Register src1, Register src2, OEBit o, |
| 1522 | RCBit r) { |
| 1523 | xo_form(EXT2 | DIVD, dst, src1, src2, o, r); |
| 1524 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1525 | |
| 1526 | |
| 1527 | void Assembler::divdu(Register dst, Register src1, Register src2, OEBit o, |
| 1528 | RCBit r) { |
| 1529 | xo_form(EXT2 | DIVDU, dst, src1, src2, o, r); |
| 1530 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1531 | #endif |
| 1532 | |
| 1533 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1534 | // Function descriptor for AIX. |
| 1535 | // Code address skips the function descriptor "header". |
| 1536 | // TOC and static chain are ignored and set to 0. |
| 1537 | void Assembler::function_descriptor() { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1538 | if (ABI_USES_FUNCTION_DESCRIPTORS) { |
| 1539 | Label instructions; |
| 1540 | DCHECK(pc_offset() == 0); |
| 1541 | emit_label_addr(&instructions); |
| 1542 | dp(0); |
| 1543 | dp(0); |
| 1544 | bind(&instructions); |
| 1545 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1546 | } |
| 1547 | |
| 1548 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1549 | int Assembler::instructions_required_for_mov(Register dst, |
| 1550 | const Operand& src) const { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1551 | bool canOptimize = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1552 | !(src.must_output_reloc_info(this) || is_trampoline_pool_blocked()); |
| 1553 | if (use_constant_pool_for_mov(dst, src, canOptimize)) { |
| 1554 | if (ConstantPoolAccessIsInOverflow()) { |
| 1555 | return kMovInstructionsConstantPool + 1; |
| 1556 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1557 | return kMovInstructionsConstantPool; |
| 1558 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1559 | DCHECK(!canOptimize); |
| 1560 | return kMovInstructionsNoConstantPool; |
| 1561 | } |
| 1562 | |
| 1563 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1564 | bool Assembler::use_constant_pool_for_mov(Register dst, const Operand& src, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1565 | bool canOptimize) const { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1566 | if (!FLAG_enable_embedded_constant_pool || !is_constant_pool_available()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1567 | // If there is no constant pool available, we must use a mov |
| 1568 | // immediate sequence. |
| 1569 | return false; |
| 1570 | } |
| 1571 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1572 | intptr_t value = src.immediate(); |
| 1573 | #if V8_TARGET_ARCH_PPC64 |
| 1574 | bool allowOverflow = !((canOptimize && is_int32(value)) || dst.is(r0)); |
| 1575 | #else |
| 1576 | bool allowOverflow = !(canOptimize || dst.is(r0)); |
| 1577 | #endif |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1578 | if (canOptimize && is_int16(value)) { |
| 1579 | // Prefer a single-instruction load-immediate. |
| 1580 | return false; |
| 1581 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1582 | if (!allowOverflow && ConstantPoolAccessIsInOverflow()) { |
| 1583 | // Prefer non-relocatable two-instruction bitwise-mov32 over |
| 1584 | // overflow sequence. |
| 1585 | return false; |
| 1586 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1587 | |
| 1588 | return true; |
| 1589 | } |
| 1590 | |
| 1591 | |
| 1592 | void Assembler::EnsureSpaceFor(int space_needed) { |
| 1593 | if (buffer_space() <= (kGap + space_needed)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1594 | GrowBuffer(space_needed); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1595 | } |
| 1596 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1597 | |
| 1598 | |
| 1599 | bool Operand::must_output_reloc_info(const Assembler* assembler) const { |
| 1600 | if (rmode_ == RelocInfo::EXTERNAL_REFERENCE) { |
| 1601 | if (assembler != NULL && assembler->predictable_code_size()) return true; |
| 1602 | return assembler->serializer_enabled(); |
| 1603 | } else if (RelocInfo::IsNone(rmode_)) { |
| 1604 | return false; |
| 1605 | } |
| 1606 | return true; |
| 1607 | } |
| 1608 | |
| 1609 | |
| 1610 | // Primarily used for loading constants |
| 1611 | // This should really move to be in macro-assembler as it |
| 1612 | // is really a pseudo instruction |
| 1613 | // Some usages of this intend for a FIXED_SEQUENCE to be used |
| 1614 | // Todo - break this dependency so we can optimize mov() in general |
| 1615 | // and only use the generic version when we require a fixed sequence |
| 1616 | void Assembler::mov(Register dst, const Operand& src) { |
| 1617 | intptr_t value = src.immediate(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1618 | bool relocatable = src.must_output_reloc_info(this); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1619 | bool canOptimize; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1620 | |
| 1621 | canOptimize = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1622 | !(relocatable || (is_trampoline_pool_blocked() && !is_int16(value))); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1623 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1624 | if (use_constant_pool_for_mov(dst, src, canOptimize)) { |
| 1625 | DCHECK(is_constant_pool_available()); |
| 1626 | if (relocatable) { |
| 1627 | RecordRelocInfo(src.rmode_); |
| 1628 | } |
| 1629 | ConstantPoolEntry::Access access = ConstantPoolAddEntry(src.rmode_, value); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1630 | #if V8_TARGET_ARCH_PPC64 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1631 | if (access == ConstantPoolEntry::OVERFLOWED) { |
| 1632 | addis(dst, kConstantPoolRegister, Operand::Zero()); |
| 1633 | ld(dst, MemOperand(dst, 0)); |
| 1634 | } else { |
| 1635 | ld(dst, MemOperand(kConstantPoolRegister, 0)); |
| 1636 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1637 | #else |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1638 | if (access == ConstantPoolEntry::OVERFLOWED) { |
| 1639 | addis(dst, kConstantPoolRegister, Operand::Zero()); |
| 1640 | lwz(dst, MemOperand(dst, 0)); |
| 1641 | } else { |
| 1642 | lwz(dst, MemOperand(kConstantPoolRegister, 0)); |
| 1643 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1644 | #endif |
| 1645 | return; |
| 1646 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1647 | |
| 1648 | if (canOptimize) { |
| 1649 | if (is_int16(value)) { |
| 1650 | li(dst, Operand(value)); |
| 1651 | } else { |
| 1652 | uint16_t u16; |
| 1653 | #if V8_TARGET_ARCH_PPC64 |
| 1654 | if (is_int32(value)) { |
| 1655 | #endif |
| 1656 | lis(dst, Operand(value >> 16)); |
| 1657 | #if V8_TARGET_ARCH_PPC64 |
| 1658 | } else { |
| 1659 | if (is_int48(value)) { |
| 1660 | li(dst, Operand(value >> 32)); |
| 1661 | } else { |
| 1662 | lis(dst, Operand(value >> 48)); |
| 1663 | u16 = ((value >> 32) & 0xffff); |
| 1664 | if (u16) { |
| 1665 | ori(dst, dst, Operand(u16)); |
| 1666 | } |
| 1667 | } |
| 1668 | sldi(dst, dst, Operand(32)); |
| 1669 | u16 = ((value >> 16) & 0xffff); |
| 1670 | if (u16) { |
| 1671 | oris(dst, dst, Operand(u16)); |
| 1672 | } |
| 1673 | } |
| 1674 | #endif |
| 1675 | u16 = (value & 0xffff); |
| 1676 | if (u16) { |
| 1677 | ori(dst, dst, Operand(u16)); |
| 1678 | } |
| 1679 | } |
| 1680 | return; |
| 1681 | } |
| 1682 | |
| 1683 | DCHECK(!canOptimize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1684 | if (relocatable) { |
| 1685 | RecordRelocInfo(src.rmode_); |
| 1686 | } |
| 1687 | bitwise_mov(dst, value); |
| 1688 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1689 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1690 | |
| 1691 | void Assembler::bitwise_mov(Register dst, intptr_t value) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1692 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1693 | #if V8_TARGET_ARCH_PPC64 |
| 1694 | int32_t hi_32 = static_cast<int32_t>(value >> 32); |
| 1695 | int32_t lo_32 = static_cast<int32_t>(value); |
| 1696 | int hi_word = static_cast<int>(hi_32 >> 16); |
| 1697 | int lo_word = static_cast<int>(hi_32 & 0xffff); |
| 1698 | lis(dst, Operand(SIGN_EXT_IMM16(hi_word))); |
| 1699 | ori(dst, dst, Operand(lo_word)); |
| 1700 | sldi(dst, dst, Operand(32)); |
| 1701 | hi_word = static_cast<int>(((lo_32 >> 16) & 0xffff)); |
| 1702 | lo_word = static_cast<int>(lo_32 & 0xffff); |
| 1703 | oris(dst, dst, Operand(hi_word)); |
| 1704 | ori(dst, dst, Operand(lo_word)); |
| 1705 | #else |
| 1706 | int hi_word = static_cast<int>(value >> 16); |
| 1707 | int lo_word = static_cast<int>(value & 0xffff); |
| 1708 | lis(dst, Operand(SIGN_EXT_IMM16(hi_word))); |
| 1709 | ori(dst, dst, Operand(lo_word)); |
| 1710 | #endif |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1711 | } |
| 1712 | |
| 1713 | |
| 1714 | void Assembler::bitwise_mov32(Register dst, int32_t value) { |
| 1715 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1716 | int hi_word = static_cast<int>(value >> 16); |
| 1717 | int lo_word = static_cast<int>(value & 0xffff); |
| 1718 | lis(dst, Operand(SIGN_EXT_IMM16(hi_word))); |
| 1719 | ori(dst, dst, Operand(lo_word)); |
| 1720 | } |
| 1721 | |
| 1722 | |
| 1723 | void Assembler::bitwise_add32(Register dst, Register src, int32_t value) { |
| 1724 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1725 | if (is_int16(value)) { |
| 1726 | addi(dst, src, Operand(value)); |
| 1727 | nop(); |
| 1728 | } else { |
| 1729 | int hi_word = static_cast<int>(value >> 16); |
| 1730 | int lo_word = static_cast<int>(value & 0xffff); |
| 1731 | if (lo_word & 0x8000) hi_word++; |
| 1732 | addis(dst, src, Operand(SIGN_EXT_IMM16(hi_word))); |
| 1733 | addic(dst, dst, Operand(SIGN_EXT_IMM16(lo_word))); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1734 | } |
| 1735 | } |
| 1736 | |
| 1737 | |
| 1738 | void Assembler::mov_label_offset(Register dst, Label* label) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1739 | int position = link(label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1740 | if (label->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1741 | // Load the position of the label relative to the generated code object. |
| 1742 | mov(dst, Operand(position + Code::kHeaderSize - kHeapObjectTag)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1743 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1744 | // Encode internal reference to unbound label. We use a dummy opcode |
| 1745 | // such that it won't collide with any opcode that might appear in the |
| 1746 | // label's chain. Encode the destination register in the 2nd instruction. |
| 1747 | int link = position - pc_offset(); |
| 1748 | DCHECK_EQ(0, link & 3); |
| 1749 | link >>= 2; |
| 1750 | DCHECK(is_int26(link)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1751 | |
| 1752 | // When the label is bound, these instructions will be patched |
| 1753 | // with a 2 instruction mov sequence that will load the |
| 1754 | // destination register with the position of the label from the |
| 1755 | // beginning of the code. |
| 1756 | // |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1757 | // target_at extracts the link and target_at_put patches the instructions. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1758 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1759 | emit(kUnboundMovLabelOffsetOpcode | (link & kImm26Mask)); |
| 1760 | emit(dst.code()); |
| 1761 | } |
| 1762 | } |
| 1763 | |
| 1764 | |
| 1765 | void Assembler::add_label_offset(Register dst, Register base, Label* label, |
| 1766 | int delta) { |
| 1767 | int position = link(label); |
| 1768 | if (label->is_bound()) { |
| 1769 | // dst = base + position + delta |
| 1770 | position += delta; |
| 1771 | bitwise_add32(dst, base, position); |
| 1772 | } else { |
| 1773 | // Encode internal reference to unbound label. We use a dummy opcode |
| 1774 | // such that it won't collide with any opcode that might appear in the |
| 1775 | // label's chain. Encode the operands in the 2nd instruction. |
| 1776 | int link = position - pc_offset(); |
| 1777 | DCHECK_EQ(0, link & 3); |
| 1778 | link >>= 2; |
| 1779 | DCHECK(is_int26(link)); |
| 1780 | DCHECK(is_int16(delta)); |
| 1781 | |
| 1782 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1783 | emit(kUnboundAddLabelOffsetOpcode | (link & kImm26Mask)); |
| 1784 | emit(dst.code() * B21 | base.code() * B16 | (delta & kImm16Mask)); |
| 1785 | } |
| 1786 | } |
| 1787 | |
| 1788 | |
| 1789 | void Assembler::mov_label_addr(Register dst, Label* label) { |
| 1790 | CheckBuffer(); |
| 1791 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 1792 | int position = link(label); |
| 1793 | if (label->is_bound()) { |
| 1794 | // Keep internal references relative until EmitRelocations. |
| 1795 | bitwise_mov(dst, position); |
| 1796 | } else { |
| 1797 | // Encode internal reference to unbound label. We use a dummy opcode |
| 1798 | // such that it won't collide with any opcode that might appear in the |
| 1799 | // label's chain. Encode the destination register in the 2nd instruction. |
| 1800 | int link = position - pc_offset(); |
| 1801 | DCHECK_EQ(0, link & 3); |
| 1802 | link >>= 2; |
| 1803 | DCHECK(is_int26(link)); |
| 1804 | |
| 1805 | // When the label is bound, these instructions will be patched |
| 1806 | // with a multi-instruction mov sequence that will load the |
| 1807 | // destination register with the address of the label. |
| 1808 | // |
| 1809 | // target_at extracts the link and target_at_put patches the instructions. |
| 1810 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1811 | emit(kUnboundMovLabelAddrOpcode | (link & kImm26Mask)); |
| 1812 | emit(dst.code()); |
| 1813 | DCHECK(kMovInstructionsNoConstantPool >= 2); |
| 1814 | for (int i = 0; i < kMovInstructionsNoConstantPool - 2; i++) nop(); |
| 1815 | } |
| 1816 | } |
| 1817 | |
| 1818 | |
| 1819 | void Assembler::emit_label_addr(Label* label) { |
| 1820 | CheckBuffer(); |
| 1821 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE); |
| 1822 | int position = link(label); |
| 1823 | if (label->is_bound()) { |
| 1824 | // Keep internal references relative until EmitRelocations. |
| 1825 | dp(position); |
| 1826 | } else { |
| 1827 | // Encode internal reference to unbound label. We use a dummy opcode |
| 1828 | // such that it won't collide with any opcode that might appear in the |
| 1829 | // label's chain. |
| 1830 | int link = position - pc_offset(); |
| 1831 | DCHECK_EQ(0, link & 3); |
| 1832 | link >>= 2; |
| 1833 | DCHECK(is_int26(link)); |
| 1834 | |
| 1835 | // When the label is bound, the instruction(s) will be patched |
| 1836 | // as a jump table entry containing the label address. target_at extracts |
| 1837 | // the link and target_at_put patches the instruction(s). |
| 1838 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1839 | emit(kUnboundJumpTableEntryOpcode | (link & kImm26Mask)); |
| 1840 | #if V8_TARGET_ARCH_PPC64 |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1841 | nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1842 | #endif |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1843 | } |
| 1844 | } |
| 1845 | |
| 1846 | |
| 1847 | // Special register instructions |
| 1848 | void Assembler::crxor(int bt, int ba, int bb) { |
| 1849 | emit(EXT1 | CRXOR | bt * B21 | ba * B16 | bb * B11); |
| 1850 | } |
| 1851 | |
| 1852 | |
| 1853 | void Assembler::creqv(int bt, int ba, int bb) { |
| 1854 | emit(EXT1 | CREQV | bt * B21 | ba * B16 | bb * B11); |
| 1855 | } |
| 1856 | |
| 1857 | |
| 1858 | void Assembler::mflr(Register dst) { |
| 1859 | emit(EXT2 | MFSPR | dst.code() * B21 | 256 << 11); // Ignore RC bit |
| 1860 | } |
| 1861 | |
| 1862 | |
| 1863 | void Assembler::mtlr(Register src) { |
| 1864 | emit(EXT2 | MTSPR | src.code() * B21 | 256 << 11); // Ignore RC bit |
| 1865 | } |
| 1866 | |
| 1867 | |
| 1868 | void Assembler::mtctr(Register src) { |
| 1869 | emit(EXT2 | MTSPR | src.code() * B21 | 288 << 11); // Ignore RC bit |
| 1870 | } |
| 1871 | |
| 1872 | |
| 1873 | void Assembler::mtxer(Register src) { |
| 1874 | emit(EXT2 | MTSPR | src.code() * B21 | 32 << 11); |
| 1875 | } |
| 1876 | |
| 1877 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1878 | void Assembler::mcrfs(CRegister cr, FPSCRBit bit) { |
| 1879 | DCHECK(static_cast<int>(bit) < 32); |
| 1880 | int bf = cr.code(); |
| 1881 | int bfa = bit / CRWIDTH; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1882 | emit(EXT4 | MCRFS | bf * B23 | bfa * B18); |
| 1883 | } |
| 1884 | |
| 1885 | |
| 1886 | void Assembler::mfcr(Register dst) { emit(EXT2 | MFCR | dst.code() * B21); } |
| 1887 | |
| 1888 | |
| 1889 | #if V8_TARGET_ARCH_PPC64 |
| 1890 | void Assembler::mffprd(Register dst, DoubleRegister src) { |
| 1891 | emit(EXT2 | MFVSRD | src.code() * B21 | dst.code() * B16); |
| 1892 | } |
| 1893 | |
| 1894 | |
| 1895 | void Assembler::mffprwz(Register dst, DoubleRegister src) { |
| 1896 | emit(EXT2 | MFVSRWZ | src.code() * B21 | dst.code() * B16); |
| 1897 | } |
| 1898 | |
| 1899 | |
| 1900 | void Assembler::mtfprd(DoubleRegister dst, Register src) { |
| 1901 | emit(EXT2 | MTVSRD | dst.code() * B21 | src.code() * B16); |
| 1902 | } |
| 1903 | |
| 1904 | |
| 1905 | void Assembler::mtfprwz(DoubleRegister dst, Register src) { |
| 1906 | emit(EXT2 | MTVSRWZ | dst.code() * B21 | src.code() * B16); |
| 1907 | } |
| 1908 | |
| 1909 | |
| 1910 | void Assembler::mtfprwa(DoubleRegister dst, Register src) { |
| 1911 | emit(EXT2 | MTVSRWA | dst.code() * B21 | src.code() * B16); |
| 1912 | } |
| 1913 | #endif |
| 1914 | |
| 1915 | |
| 1916 | // Exception-generating instructions and debugging support. |
| 1917 | // Stops with a non-negative code less than kNumOfWatchedStops support |
| 1918 | // enabling/disabling and a counter feature. See simulator-ppc.h . |
| 1919 | void Assembler::stop(const char* msg, Condition cond, int32_t code, |
| 1920 | CRegister cr) { |
| 1921 | if (cond != al) { |
| 1922 | Label skip; |
| 1923 | b(NegateCondition(cond), &skip, cr); |
| 1924 | bkpt(0); |
| 1925 | bind(&skip); |
| 1926 | } else { |
| 1927 | bkpt(0); |
| 1928 | } |
| 1929 | } |
| 1930 | |
| 1931 | |
| 1932 | void Assembler::bkpt(uint32_t imm16) { emit(0x7d821008); } |
| 1933 | |
| 1934 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1935 | void Assembler::dcbf(Register ra, Register rb) { |
| 1936 | emit(EXT2 | DCBF | ra.code() * B16 | rb.code() * B11); |
| 1937 | } |
| 1938 | |
| 1939 | |
| 1940 | void Assembler::sync() { emit(EXT2 | SYNC); } |
| 1941 | |
| 1942 | |
| 1943 | void Assembler::lwsync() { emit(EXT2 | SYNC | 1 * B21); } |
| 1944 | |
| 1945 | |
| 1946 | void Assembler::icbi(Register ra, Register rb) { |
| 1947 | emit(EXT2 | ICBI | ra.code() * B16 | rb.code() * B11); |
| 1948 | } |
| 1949 | |
| 1950 | |
| 1951 | void Assembler::isync() { emit(EXT1 | ISYNC); } |
| 1952 | |
| 1953 | |
| 1954 | // Floating point support |
| 1955 | |
| 1956 | void Assembler::lfd(const DoubleRegister frt, const MemOperand& src) { |
| 1957 | int offset = src.offset(); |
| 1958 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1959 | DCHECK(!ra.is(r0)); |
| 1960 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1961 | int imm16 = offset & kImm16Mask; |
| 1962 | // could be x_form instruction with some casting magic |
| 1963 | emit(LFD | frt.code() * B21 | ra.code() * B16 | imm16); |
| 1964 | } |
| 1965 | |
| 1966 | |
| 1967 | void Assembler::lfdu(const DoubleRegister frt, const MemOperand& src) { |
| 1968 | int offset = src.offset(); |
| 1969 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1970 | DCHECK(!ra.is(r0)); |
| 1971 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1972 | int imm16 = offset & kImm16Mask; |
| 1973 | // could be x_form instruction with some casting magic |
| 1974 | emit(LFDU | frt.code() * B21 | ra.code() * B16 | imm16); |
| 1975 | } |
| 1976 | |
| 1977 | |
| 1978 | void Assembler::lfdx(const DoubleRegister frt, const MemOperand& src) { |
| 1979 | Register ra = src.ra(); |
| 1980 | Register rb = src.rb(); |
| 1981 | DCHECK(!ra.is(r0)); |
| 1982 | emit(EXT2 | LFDX | frt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1983 | LeaveRC); |
| 1984 | } |
| 1985 | |
| 1986 | |
| 1987 | void Assembler::lfdux(const DoubleRegister frt, const MemOperand& src) { |
| 1988 | Register ra = src.ra(); |
| 1989 | Register rb = src.rb(); |
| 1990 | DCHECK(!ra.is(r0)); |
| 1991 | emit(EXT2 | LFDUX | frt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 1992 | LeaveRC); |
| 1993 | } |
| 1994 | |
| 1995 | |
| 1996 | void Assembler::lfs(const DoubleRegister frt, const MemOperand& src) { |
| 1997 | int offset = src.offset(); |
| 1998 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1999 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2000 | DCHECK(!ra.is(r0)); |
| 2001 | int imm16 = offset & kImm16Mask; |
| 2002 | // could be x_form instruction with some casting magic |
| 2003 | emit(LFS | frt.code() * B21 | ra.code() * B16 | imm16); |
| 2004 | } |
| 2005 | |
| 2006 | |
| 2007 | void Assembler::lfsu(const DoubleRegister frt, const MemOperand& src) { |
| 2008 | int offset = src.offset(); |
| 2009 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2010 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2011 | DCHECK(!ra.is(r0)); |
| 2012 | int imm16 = offset & kImm16Mask; |
| 2013 | // could be x_form instruction with some casting magic |
| 2014 | emit(LFSU | frt.code() * B21 | ra.code() * B16 | imm16); |
| 2015 | } |
| 2016 | |
| 2017 | |
| 2018 | void Assembler::lfsx(const DoubleRegister frt, const MemOperand& src) { |
| 2019 | Register ra = src.ra(); |
| 2020 | Register rb = src.rb(); |
| 2021 | DCHECK(!ra.is(r0)); |
| 2022 | emit(EXT2 | LFSX | frt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 2023 | LeaveRC); |
| 2024 | } |
| 2025 | |
| 2026 | |
| 2027 | void Assembler::lfsux(const DoubleRegister frt, const MemOperand& src) { |
| 2028 | Register ra = src.ra(); |
| 2029 | Register rb = src.rb(); |
| 2030 | DCHECK(!ra.is(r0)); |
| 2031 | emit(EXT2 | LFSUX | frt.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 2032 | LeaveRC); |
| 2033 | } |
| 2034 | |
| 2035 | |
| 2036 | void Assembler::stfd(const DoubleRegister frs, const MemOperand& src) { |
| 2037 | int offset = src.offset(); |
| 2038 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2039 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2040 | DCHECK(!ra.is(r0)); |
| 2041 | int imm16 = offset & kImm16Mask; |
| 2042 | // could be x_form instruction with some casting magic |
| 2043 | emit(STFD | frs.code() * B21 | ra.code() * B16 | imm16); |
| 2044 | } |
| 2045 | |
| 2046 | |
| 2047 | void Assembler::stfdu(const DoubleRegister frs, const MemOperand& src) { |
| 2048 | int offset = src.offset(); |
| 2049 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2050 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2051 | DCHECK(!ra.is(r0)); |
| 2052 | int imm16 = offset & kImm16Mask; |
| 2053 | // could be x_form instruction with some casting magic |
| 2054 | emit(STFDU | frs.code() * B21 | ra.code() * B16 | imm16); |
| 2055 | } |
| 2056 | |
| 2057 | |
| 2058 | void Assembler::stfdx(const DoubleRegister frs, const MemOperand& src) { |
| 2059 | Register ra = src.ra(); |
| 2060 | Register rb = src.rb(); |
| 2061 | DCHECK(!ra.is(r0)); |
| 2062 | emit(EXT2 | STFDX | frs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 2063 | LeaveRC); |
| 2064 | } |
| 2065 | |
| 2066 | |
| 2067 | void Assembler::stfdux(const DoubleRegister frs, const MemOperand& src) { |
| 2068 | Register ra = src.ra(); |
| 2069 | Register rb = src.rb(); |
| 2070 | DCHECK(!ra.is(r0)); |
| 2071 | emit(EXT2 | STFDUX | frs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 2072 | LeaveRC); |
| 2073 | } |
| 2074 | |
| 2075 | |
| 2076 | void Assembler::stfs(const DoubleRegister frs, const MemOperand& src) { |
| 2077 | int offset = src.offset(); |
| 2078 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2079 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2080 | DCHECK(!ra.is(r0)); |
| 2081 | int imm16 = offset & kImm16Mask; |
| 2082 | // could be x_form instruction with some casting magic |
| 2083 | emit(STFS | frs.code() * B21 | ra.code() * B16 | imm16); |
| 2084 | } |
| 2085 | |
| 2086 | |
| 2087 | void Assembler::stfsu(const DoubleRegister frs, const MemOperand& src) { |
| 2088 | int offset = src.offset(); |
| 2089 | Register ra = src.ra(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2090 | CHECK(is_int16(offset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2091 | DCHECK(!ra.is(r0)); |
| 2092 | int imm16 = offset & kImm16Mask; |
| 2093 | // could be x_form instruction with some casting magic |
| 2094 | emit(STFSU | frs.code() * B21 | ra.code() * B16 | imm16); |
| 2095 | } |
| 2096 | |
| 2097 | |
| 2098 | void Assembler::stfsx(const DoubleRegister frs, const MemOperand& src) { |
| 2099 | Register ra = src.ra(); |
| 2100 | Register rb = src.rb(); |
| 2101 | DCHECK(!ra.is(r0)); |
| 2102 | emit(EXT2 | STFSX | frs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 2103 | LeaveRC); |
| 2104 | } |
| 2105 | |
| 2106 | |
| 2107 | void Assembler::stfsux(const DoubleRegister frs, const MemOperand& src) { |
| 2108 | Register ra = src.ra(); |
| 2109 | Register rb = src.rb(); |
| 2110 | DCHECK(!ra.is(r0)); |
| 2111 | emit(EXT2 | STFSUX | frs.code() * B21 | ra.code() * B16 | rb.code() * B11 | |
| 2112 | LeaveRC); |
| 2113 | } |
| 2114 | |
| 2115 | |
| 2116 | void Assembler::fsub(const DoubleRegister frt, const DoubleRegister fra, |
| 2117 | const DoubleRegister frb, RCBit rc) { |
| 2118 | a_form(EXT4 | FSUB, frt, fra, frb, rc); |
| 2119 | } |
| 2120 | |
| 2121 | |
| 2122 | void Assembler::fadd(const DoubleRegister frt, const DoubleRegister fra, |
| 2123 | const DoubleRegister frb, RCBit rc) { |
| 2124 | a_form(EXT4 | FADD, frt, fra, frb, rc); |
| 2125 | } |
| 2126 | |
| 2127 | |
| 2128 | void Assembler::fmul(const DoubleRegister frt, const DoubleRegister fra, |
| 2129 | const DoubleRegister frc, RCBit rc) { |
| 2130 | emit(EXT4 | FMUL | frt.code() * B21 | fra.code() * B16 | frc.code() * B6 | |
| 2131 | rc); |
| 2132 | } |
| 2133 | |
| 2134 | |
| 2135 | void Assembler::fdiv(const DoubleRegister frt, const DoubleRegister fra, |
| 2136 | const DoubleRegister frb, RCBit rc) { |
| 2137 | a_form(EXT4 | FDIV, frt, fra, frb, rc); |
| 2138 | } |
| 2139 | |
| 2140 | |
| 2141 | void Assembler::fcmpu(const DoubleRegister fra, const DoubleRegister frb, |
| 2142 | CRegister cr) { |
| 2143 | DCHECK(cr.code() >= 0 && cr.code() <= 7); |
| 2144 | emit(EXT4 | FCMPU | cr.code() * B23 | fra.code() * B16 | frb.code() * B11); |
| 2145 | } |
| 2146 | |
| 2147 | |
| 2148 | void Assembler::fmr(const DoubleRegister frt, const DoubleRegister frb, |
| 2149 | RCBit rc) { |
| 2150 | emit(EXT4 | FMR | frt.code() * B21 | frb.code() * B11 | rc); |
| 2151 | } |
| 2152 | |
| 2153 | |
| 2154 | void Assembler::fctiwz(const DoubleRegister frt, const DoubleRegister frb) { |
| 2155 | emit(EXT4 | FCTIWZ | frt.code() * B21 | frb.code() * B11); |
| 2156 | } |
| 2157 | |
| 2158 | |
| 2159 | void Assembler::fctiw(const DoubleRegister frt, const DoubleRegister frb) { |
| 2160 | emit(EXT4 | FCTIW | frt.code() * B21 | frb.code() * B11); |
| 2161 | } |
| 2162 | |
| 2163 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2164 | void Assembler::frin(const DoubleRegister frt, const DoubleRegister frb, |
| 2165 | RCBit rc) { |
| 2166 | emit(EXT4 | FRIN | frt.code() * B21 | frb.code() * B11 | rc); |
| 2167 | } |
| 2168 | |
| 2169 | |
| 2170 | void Assembler::friz(const DoubleRegister frt, const DoubleRegister frb, |
| 2171 | RCBit rc) { |
| 2172 | emit(EXT4 | FRIZ | frt.code() * B21 | frb.code() * B11 | rc); |
| 2173 | } |
| 2174 | |
| 2175 | |
| 2176 | void Assembler::frip(const DoubleRegister frt, const DoubleRegister frb, |
| 2177 | RCBit rc) { |
| 2178 | emit(EXT4 | FRIP | frt.code() * B21 | frb.code() * B11 | rc); |
| 2179 | } |
| 2180 | |
| 2181 | |
| 2182 | void Assembler::frim(const DoubleRegister frt, const DoubleRegister frb, |
| 2183 | RCBit rc) { |
| 2184 | emit(EXT4 | FRIM | frt.code() * B21 | frb.code() * B11 | rc); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2185 | } |
| 2186 | |
| 2187 | |
| 2188 | void Assembler::frsp(const DoubleRegister frt, const DoubleRegister frb, |
| 2189 | RCBit rc) { |
| 2190 | emit(EXT4 | FRSP | frt.code() * B21 | frb.code() * B11 | rc); |
| 2191 | } |
| 2192 | |
| 2193 | |
| 2194 | void Assembler::fcfid(const DoubleRegister frt, const DoubleRegister frb, |
| 2195 | RCBit rc) { |
| 2196 | emit(EXT4 | FCFID | frt.code() * B21 | frb.code() * B11 | rc); |
| 2197 | } |
| 2198 | |
| 2199 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2200 | void Assembler::fcfidu(const DoubleRegister frt, const DoubleRegister frb, |
| 2201 | RCBit rc) { |
| 2202 | emit(EXT4 | FCFIDU | frt.code() * B21 | frb.code() * B11 | rc); |
| 2203 | } |
| 2204 | |
| 2205 | |
| 2206 | void Assembler::fcfidus(const DoubleRegister frt, const DoubleRegister frb, |
| 2207 | RCBit rc) { |
| 2208 | emit(EXT3 | FCFIDU | frt.code() * B21 | frb.code() * B11 | rc); |
| 2209 | } |
| 2210 | |
| 2211 | |
| 2212 | void Assembler::fcfids(const DoubleRegister frt, const DoubleRegister frb, |
| 2213 | RCBit rc) { |
| 2214 | emit(EXT3 | FCFID | frt.code() * B21 | frb.code() * B11 | rc); |
| 2215 | } |
| 2216 | |
| 2217 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2218 | void Assembler::fctid(const DoubleRegister frt, const DoubleRegister frb, |
| 2219 | RCBit rc) { |
| 2220 | emit(EXT4 | FCTID | frt.code() * B21 | frb.code() * B11 | rc); |
| 2221 | } |
| 2222 | |
| 2223 | |
| 2224 | void Assembler::fctidz(const DoubleRegister frt, const DoubleRegister frb, |
| 2225 | RCBit rc) { |
| 2226 | emit(EXT4 | FCTIDZ | frt.code() * B21 | frb.code() * B11 | rc); |
| 2227 | } |
| 2228 | |
| 2229 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2230 | void Assembler::fctidu(const DoubleRegister frt, const DoubleRegister frb, |
| 2231 | RCBit rc) { |
| 2232 | emit(EXT4 | FCTIDU | frt.code() * B21 | frb.code() * B11 | rc); |
| 2233 | } |
| 2234 | |
| 2235 | |
| 2236 | void Assembler::fctiduz(const DoubleRegister frt, const DoubleRegister frb, |
| 2237 | RCBit rc) { |
| 2238 | emit(EXT4 | FCTIDUZ | frt.code() * B21 | frb.code() * B11 | rc); |
| 2239 | } |
| 2240 | |
| 2241 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2242 | void Assembler::fsel(const DoubleRegister frt, const DoubleRegister fra, |
| 2243 | const DoubleRegister frc, const DoubleRegister frb, |
| 2244 | RCBit rc) { |
| 2245 | emit(EXT4 | FSEL | frt.code() * B21 | fra.code() * B16 | frb.code() * B11 | |
| 2246 | frc.code() * B6 | rc); |
| 2247 | } |
| 2248 | |
| 2249 | |
| 2250 | void Assembler::fneg(const DoubleRegister frt, const DoubleRegister frb, |
| 2251 | RCBit rc) { |
| 2252 | emit(EXT4 | FNEG | frt.code() * B21 | frb.code() * B11 | rc); |
| 2253 | } |
| 2254 | |
| 2255 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2256 | void Assembler::mtfsb0(FPSCRBit bit, RCBit rc) { |
| 2257 | DCHECK(static_cast<int>(bit) < 32); |
| 2258 | int bt = bit; |
| 2259 | emit(EXT4 | MTFSB0 | bt * B21 | rc); |
| 2260 | } |
| 2261 | |
| 2262 | |
| 2263 | void Assembler::mtfsb1(FPSCRBit bit, RCBit rc) { |
| 2264 | DCHECK(static_cast<int>(bit) < 32); |
| 2265 | int bt = bit; |
| 2266 | emit(EXT4 | MTFSB1 | bt * B21 | rc); |
| 2267 | } |
| 2268 | |
| 2269 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2270 | void Assembler::mtfsfi(int bf, int immediate, RCBit rc) { |
| 2271 | emit(EXT4 | MTFSFI | bf * B23 | immediate * B12 | rc); |
| 2272 | } |
| 2273 | |
| 2274 | |
| 2275 | void Assembler::mffs(const DoubleRegister frt, RCBit rc) { |
| 2276 | emit(EXT4 | MFFS | frt.code() * B21 | rc); |
| 2277 | } |
| 2278 | |
| 2279 | |
| 2280 | void Assembler::mtfsf(const DoubleRegister frb, bool L, int FLM, bool W, |
| 2281 | RCBit rc) { |
| 2282 | emit(EXT4 | MTFSF | frb.code() * B11 | W * B16 | FLM * B17 | L * B25 | rc); |
| 2283 | } |
| 2284 | |
| 2285 | |
| 2286 | void Assembler::fsqrt(const DoubleRegister frt, const DoubleRegister frb, |
| 2287 | RCBit rc) { |
| 2288 | emit(EXT4 | FSQRT | frt.code() * B21 | frb.code() * B11 | rc); |
| 2289 | } |
| 2290 | |
| 2291 | |
| 2292 | void Assembler::fabs(const DoubleRegister frt, const DoubleRegister frb, |
| 2293 | RCBit rc) { |
| 2294 | emit(EXT4 | FABS | frt.code() * B21 | frb.code() * B11 | rc); |
| 2295 | } |
| 2296 | |
| 2297 | |
| 2298 | void Assembler::fmadd(const DoubleRegister frt, const DoubleRegister fra, |
| 2299 | const DoubleRegister frc, const DoubleRegister frb, |
| 2300 | RCBit rc) { |
| 2301 | emit(EXT4 | FMADD | frt.code() * B21 | fra.code() * B16 | frb.code() * B11 | |
| 2302 | frc.code() * B6 | rc); |
| 2303 | } |
| 2304 | |
| 2305 | |
| 2306 | void Assembler::fmsub(const DoubleRegister frt, const DoubleRegister fra, |
| 2307 | const DoubleRegister frc, const DoubleRegister frb, |
| 2308 | RCBit rc) { |
| 2309 | emit(EXT4 | FMSUB | frt.code() * B21 | fra.code() * B16 | frb.code() * B11 | |
| 2310 | frc.code() * B6 | rc); |
| 2311 | } |
| 2312 | |
| 2313 | |
| 2314 | // Pseudo instructions. |
| 2315 | void Assembler::nop(int type) { |
| 2316 | Register reg = r0; |
| 2317 | switch (type) { |
| 2318 | case NON_MARKING_NOP: |
| 2319 | reg = r0; |
| 2320 | break; |
| 2321 | case GROUP_ENDING_NOP: |
| 2322 | reg = r2; |
| 2323 | break; |
| 2324 | case DEBUG_BREAK_NOP: |
| 2325 | reg = r3; |
| 2326 | break; |
| 2327 | default: |
| 2328 | UNIMPLEMENTED(); |
| 2329 | } |
| 2330 | |
| 2331 | ori(reg, reg, Operand::Zero()); |
| 2332 | } |
| 2333 | |
| 2334 | |
| 2335 | bool Assembler::IsNop(Instr instr, int type) { |
| 2336 | int reg = 0; |
| 2337 | switch (type) { |
| 2338 | case NON_MARKING_NOP: |
| 2339 | reg = 0; |
| 2340 | break; |
| 2341 | case GROUP_ENDING_NOP: |
| 2342 | reg = 2; |
| 2343 | break; |
| 2344 | case DEBUG_BREAK_NOP: |
| 2345 | reg = 3; |
| 2346 | break; |
| 2347 | default: |
| 2348 | UNIMPLEMENTED(); |
| 2349 | } |
| 2350 | return instr == (ORI | reg * B21 | reg * B16); |
| 2351 | } |
| 2352 | |
| 2353 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2354 | void Assembler::GrowBuffer(int needed) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2355 | if (!own_buffer_) FATAL("external code buffer is too small"); |
| 2356 | |
| 2357 | // Compute new buffer size. |
| 2358 | CodeDesc desc; // the new buffer |
| 2359 | if (buffer_size_ < 4 * KB) { |
| 2360 | desc.buffer_size = 4 * KB; |
| 2361 | } else if (buffer_size_ < 1 * MB) { |
| 2362 | desc.buffer_size = 2 * buffer_size_; |
| 2363 | } else { |
| 2364 | desc.buffer_size = buffer_size_ + 1 * MB; |
| 2365 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2366 | int space = buffer_space() + (desc.buffer_size - buffer_size_); |
| 2367 | if (space < needed) { |
| 2368 | desc.buffer_size += needed - space; |
| 2369 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2370 | CHECK_GT(desc.buffer_size, 0); // no overflow |
| 2371 | |
| 2372 | // Set up new buffer. |
| 2373 | desc.buffer = NewArray<byte>(desc.buffer_size); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2374 | desc.origin = this; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2375 | |
| 2376 | desc.instr_size = pc_offset(); |
| 2377 | desc.reloc_size = (buffer_ + buffer_size_) - reloc_info_writer.pos(); |
| 2378 | |
| 2379 | // Copy the data. |
| 2380 | intptr_t pc_delta = desc.buffer - buffer_; |
| 2381 | intptr_t rc_delta = |
| 2382 | (desc.buffer + desc.buffer_size) - (buffer_ + buffer_size_); |
| 2383 | memmove(desc.buffer, buffer_, desc.instr_size); |
| 2384 | memmove(reloc_info_writer.pos() + rc_delta, reloc_info_writer.pos(), |
| 2385 | desc.reloc_size); |
| 2386 | |
| 2387 | // Switch buffers. |
| 2388 | DeleteArray(buffer_); |
| 2389 | buffer_ = desc.buffer; |
| 2390 | buffer_size_ = desc.buffer_size; |
| 2391 | pc_ += pc_delta; |
| 2392 | reloc_info_writer.Reposition(reloc_info_writer.pos() + rc_delta, |
| 2393 | reloc_info_writer.last_pc() + pc_delta); |
| 2394 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2395 | // Nothing else to do here since we keep all internal references and |
| 2396 | // deferred relocation entries relative to the buffer (until |
| 2397 | // EmitRelocations). |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2398 | } |
| 2399 | |
| 2400 | |
| 2401 | void Assembler::db(uint8_t data) { |
| 2402 | CheckBuffer(); |
| 2403 | *reinterpret_cast<uint8_t*>(pc_) = data; |
| 2404 | pc_ += sizeof(uint8_t); |
| 2405 | } |
| 2406 | |
| 2407 | |
| 2408 | void Assembler::dd(uint32_t data) { |
| 2409 | CheckBuffer(); |
| 2410 | *reinterpret_cast<uint32_t*>(pc_) = data; |
| 2411 | pc_ += sizeof(uint32_t); |
| 2412 | } |
| 2413 | |
| 2414 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2415 | void Assembler::dq(uint64_t value) { |
| 2416 | CheckBuffer(); |
| 2417 | *reinterpret_cast<uint64_t*>(pc_) = value; |
| 2418 | pc_ += sizeof(uint64_t); |
| 2419 | } |
| 2420 | |
| 2421 | |
| 2422 | void Assembler::dp(uintptr_t data) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2423 | CheckBuffer(); |
| 2424 | *reinterpret_cast<uintptr_t*>(pc_) = data; |
| 2425 | pc_ += sizeof(uintptr_t); |
| 2426 | } |
| 2427 | |
| 2428 | |
| 2429 | void Assembler::RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2430 | if (RelocInfo::IsNone(rmode) || |
| 2431 | // Don't record external references unless the heap will be serialized. |
| 2432 | (rmode == RelocInfo::EXTERNAL_REFERENCE && !serializer_enabled() && |
| 2433 | !emit_debug_code())) { |
| 2434 | return; |
| 2435 | } |
| 2436 | if (rmode == RelocInfo::CODE_TARGET_WITH_ID) { |
| 2437 | data = RecordedAstId().ToInt(); |
| 2438 | ClearRecordedAstId(); |
| 2439 | } |
| 2440 | DeferredRelocInfo rinfo(pc_offset(), rmode, data); |
| 2441 | relocations_.push_back(rinfo); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2442 | } |
| 2443 | |
| 2444 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2445 | void Assembler::EmitRelocations() { |
| 2446 | EnsureSpaceFor(relocations_.size() * kMaxRelocSize); |
| 2447 | |
| 2448 | for (std::vector<DeferredRelocInfo>::iterator it = relocations_.begin(); |
| 2449 | it != relocations_.end(); it++) { |
| 2450 | RelocInfo::Mode rmode = it->rmode(); |
| 2451 | Address pc = buffer_ + it->position(); |
| 2452 | Code* code = NULL; |
| 2453 | RelocInfo rinfo(isolate(), pc, rmode, it->data(), code); |
| 2454 | |
| 2455 | // Fix up internal references now that they are guaranteed to be bound. |
| 2456 | if (RelocInfo::IsInternalReference(rmode)) { |
| 2457 | // Jump table entry |
| 2458 | intptr_t pos = reinterpret_cast<intptr_t>(Memory::Address_at(pc)); |
| 2459 | Memory::Address_at(pc) = buffer_ + pos; |
| 2460 | } else if (RelocInfo::IsInternalReferenceEncoded(rmode)) { |
| 2461 | // mov sequence |
| 2462 | intptr_t pos = reinterpret_cast<intptr_t>(target_address_at(pc, code)); |
| 2463 | set_target_address_at(isolate(), pc, code, buffer_ + pos, |
| 2464 | SKIP_ICACHE_FLUSH); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2465 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2466 | |
| 2467 | reloc_info_writer.Write(&rinfo); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2468 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2469 | |
| 2470 | reloc_info_writer.Finish(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2471 | } |
| 2472 | |
| 2473 | |
| 2474 | void Assembler::BlockTrampolinePoolFor(int instructions) { |
| 2475 | BlockTrampolinePoolBefore(pc_offset() + instructions * kInstrSize); |
| 2476 | } |
| 2477 | |
| 2478 | |
| 2479 | void Assembler::CheckTrampolinePool() { |
| 2480 | // Some small sequences of instructions must not be broken up by the |
| 2481 | // insertion of a trampoline pool; such sequences are protected by setting |
| 2482 | // either trampoline_pool_blocked_nesting_ or no_trampoline_pool_before_, |
| 2483 | // which are both checked here. Also, recursive calls to CheckTrampolinePool |
| 2484 | // are blocked by trampoline_pool_blocked_nesting_. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2485 | if (trampoline_pool_blocked_nesting_ > 0) return; |
| 2486 | if (pc_offset() < no_trampoline_pool_before_) { |
| 2487 | next_trampoline_check_ = no_trampoline_pool_before_; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2488 | return; |
| 2489 | } |
| 2490 | |
| 2491 | DCHECK(!trampoline_emitted_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2492 | if (tracked_branch_count_ > 0) { |
| 2493 | int size = tracked_branch_count_ * kInstrSize; |
| 2494 | |
| 2495 | // As we are only going to emit trampoline once, we need to prevent any |
| 2496 | // further emission. |
| 2497 | trampoline_emitted_ = true; |
| 2498 | next_trampoline_check_ = kMaxInt; |
| 2499 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2500 | // First we emit jump, then we emit trampoline pool. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2501 | b(size + kInstrSize, LeaveLK); |
| 2502 | for (int i = size; i > 0; i -= kInstrSize) { |
| 2503 | b(i, LeaveLK); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2504 | } |
| 2505 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2506 | trampoline_ = Trampoline(pc_offset() - size, tracked_branch_count_); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2507 | } |
| 2508 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2509 | |
| 2510 | |
| 2511 | } // namespace internal |
| 2512 | } // namespace v8 |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2513 | |
| 2514 | #endif // V8_TARGET_ARCH_PPC |