assembler_arm.cc revision 65fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7
12faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes/* 22faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * Copyright (C) 2011 The Android Open Source Project 32faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * 42faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 52faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * you may not use this file except in compliance with the License. 62faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * You may obtain a copy of the License at 72faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * 82faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 92faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * 102faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * Unless required by applicable law or agreed to in writing, software 112faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 122faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 132faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * See the License for the specific language governing permissions and 142faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes * limitations under the License. 152faa5f1271587cda765f26bcf2951065300a01ffElliott Hughes */ 16a5d5cfda6239d8876937e75eba43222f639d2447Carl Shapiro 172c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers#include "assembler_arm.h" 182c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers 1907ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include "base/logging.h" 20166db04e259ca51838c311891598664deeed85adIan Rogers#include "entrypoints/quick/quick_entrypoints.h" 21578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "offsets.h" 22e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro#include "thread.h" 23578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "utils.h" 24a5d5cfda6239d8876937e75eba43222f639d2447Carl Shapiro 256b6b5f0e67ce03f38223a525612955663bc1799bCarl Shapironamespace art { 262c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersnamespace arm { 27a5d5cfda6239d8876937e75eba43222f639d2447Carl Shapiro 2865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonconst char* kRegisterNames[] = { 291f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", 301f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes "fp", "ip", "sp", "lr", "pc" 311f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes}; 3265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 3365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonconst char* kConditionNames[] = { 3465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison "EQ", "NE", "CS", "CC", "MI", "PL", "VS", "VC", "HI", "LS", "GE", "LT", "GT", 3565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison "LE", "AL", 3665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison}; 3765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 381f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughesstd::ostream& operator<<(std::ostream& os, const Register& rhs) { 391f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes if (rhs >= R0 && rhs <= PC) { 401f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes os << kRegisterNames[rhs]; 411f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } else { 42b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers os << "Register[" << static_cast<int>(rhs) << "]"; 431f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } 441f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes return os; 451f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes} 461f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes 471f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes 481f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughesstd::ostream& operator<<(std::ostream& os, const SRegister& rhs) { 491f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes if (rhs >= S0 && rhs < kNumberOfSRegisters) { 50b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers os << "s" << static_cast<int>(rhs); 511f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } else { 52b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers os << "SRegister[" << static_cast<int>(rhs) << "]"; 531f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } 541f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes return os; 551f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes} 561f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes 571f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes 581f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughesstd::ostream& operator<<(std::ostream& os, const DRegister& rhs) { 591f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes if (rhs >= D0 && rhs < kNumberOfDRegisters) { 60b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers os << "d" << static_cast<int>(rhs); 611f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } else { 62b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers os << "DRegister[" << static_cast<int>(rhs) << "]"; 631f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } 641f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes return os; 651f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes} 661f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes 671f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughesstd::ostream& operator<<(std::ostream& os, const Condition& rhs) { 681f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes if (rhs >= EQ && rhs <= AL) { 691f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes os << kConditionNames[rhs]; 701f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } else { 71b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers os << "Condition[" << static_cast<int>(rhs) << "]"; 721f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes } 731f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes return os; 741f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes} 751f359b08f5ad33ae72e4073b86a9257fe1ed11e5Elliott Hughes 76a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro 77a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro 7865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t ShifterOperand::encodingArm() const { 7965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK(is_valid()); 8065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison switch (type_) { 8165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kImmediate: 8265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (is_rotate_) { 8365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (rotate_ << kRotateShift) | (immed_ << kImmed8Shift); 8465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 8565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return immed_; 8665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 8765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison break; 8865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kRegister: 8965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (is_shift_) { 9065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Shifted immediate or register. 9165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (rs_ == kNoRegister) { 9265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Immediate shift. 9365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return immed_ << kShiftImmShift | 9465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison static_cast<uint32_t>(shift_) << kShiftShift | 9565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison static_cast<uint32_t>(rm_); 9665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 9765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Register shift. 9865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return static_cast<uint32_t>(rs_) << kShiftRegisterShift | 9965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison static_cast<uint32_t>(shift_) << kShiftShift | (1 << 4) | 10065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison static_cast<uint32_t>(rm_); 10165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 10265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 10365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Simple register 10465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return static_cast<uint32_t>(rm_); 10565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 10665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison break; 10765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 10865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Can't get here. 10965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison LOG(FATAL) << "Invalid shifter operand for ARM"; 11065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return 0; 111a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro } 112a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro} 113a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro 11465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t ShifterOperand::encodingThumb(int version) const { 11565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK(version == 1 || version == 2); 11665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (version == 1) { 11765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison LOG(FATAL) << "Invalid of use encodingThumb with version 1"; 11865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 11965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison switch (type_) { 12065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kImmediate: 12165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return immed_; 12265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kRegister: 12365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (is_shift_) { 12465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Shifted immediate or register. 12565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (rs_ == kNoRegister) { 12665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Immediate shift. 12765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (shift_ == RRX) { 12865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // RRX is encoded as an ROR with imm 0. 12965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return ROR << 4 | static_cast<uint32_t>(rm_); 13065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 13165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t imm3 = immed_ >> 2; 13265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t imm2 = immed_ & 0b11; 13365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 13465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return imm3 << 12 | imm2 << 6 | shift_ << 4 | 13565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison static_cast<uint32_t>(rm_); 13665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 13765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 13865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison LOG(FATAL) << "No register-shifted register instruction available in thumb"; 13965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return 0; 14065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 14165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 14265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Simple register 14365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return static_cast<uint32_t>(rm_); 14465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 14565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison break; 14665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 14765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Can't get here. 14865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison LOG(FATAL) << "Invalid shifter operand for thumb"; 14965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return 0; 15065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 151a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro } 15265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return 0; 15365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 15465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 15565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool ShifterOperand::CanHoldThumb(Register rd, Register rn, Opcode opcode, 15665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t immediate, ShifterOperand* shifter_op) { 15765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->type_ = kImmediate; 15865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->immed_ = immediate; 15965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->is_shift_ = false; 16065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->is_rotate_ = false; 16165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison switch (opcode) { 16265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case ADD: 16365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case SUB: 16465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (rn == SP) { 16565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (rd == SP) { 16665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return immediate < (1 << 9); // 9 bits allowed. 16765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 16865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return immediate < (1 << 12); // 12 bits. 16965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 17065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 17165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (immediate < (1 << 12)) { // Less than (or equal to) 12 bits can always be done. 17265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return true; 17365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 17465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return ArmAssembler::ModifiedImmediate(immediate) != kInvalidModifiedImmediate; 175a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro 17665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case MOV: 17765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (immediate < (1 << 12)) { // Less than (or equal to) 12 bits can always be done. 17865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return true; 17965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 18065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return ArmAssembler::ModifiedImmediate(immediate) != kInvalidModifiedImmediate; 18165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case MVN: 18265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 18365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return ArmAssembler::ModifiedImmediate(immediate) != kInvalidModifiedImmediate; 184a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro } 185a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro} 186a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro 18765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::encodingArm() const { 18865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK(IsAbsoluteUint(12, offset_)); 18965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding; 19065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (offset_ < 0) { 19165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding = (am_ ^ (1 << kUShift)) | -offset_; // Flip U to adjust sign. 192b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 19365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding = am_ | offset_; 19465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 19565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding |= static_cast<uint32_t>(rn_) << kRnShift; 19665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return encoding; 19765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 19865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 19965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 20065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::encodingThumb(int version) const { 20165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK(version == 1 || version == 2); 20265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding = 0; 20365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (version == 2) { 20465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding = static_cast<uint32_t>(rn_) << 16; 20565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Check for the T3/T4 encoding. 20665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // PUW must Offset for T3 20765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Convert ARM PU0W to PUW 20865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // The Mode is in ARM encoding format which is: 20965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // |P|U|0|W| 21065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // we need this in thumb2 mode: 21165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // |P|U|W| 21265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 21365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t am = am_; 21465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t offset = offset_; 21565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (offset < 0) { 21665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison am ^= 1 << kUShift; 21765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison offset = -offset; 218b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 21965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (offset_ < 0 || (offset >= 0 && offset < 256 && 22065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison am_ != Mode::Offset)) { 22165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // T4 encoding. 22265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t PUW = am >> 21; // Move down to bottom of word. 22365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison PUW = (PUW >> 1) | (PUW & 1); // Bits 3, 2 and 0. 22465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // If P is 0 then W must be 1 (Different from ARM). 22565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if ((PUW & 0b100) == 0) { 22665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison PUW |= 0b1; 22765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 22865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding |= B11 | PUW << 8 | offset; 22965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 23065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // T3 encoding (also sets op1 to 0b01). 23165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding |= B23 | offset_; 23265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 23365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 23465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison LOG(FATAL) << "Invalid use of encodingThumb for version 1"; 235b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 23665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return encoding; 237b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 238b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 23965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison// This is very like the ARM encoding except the offset is 10 bits. 24065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::encodingThumbLdrdStrd() const { 24165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding; 24265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t am = am_; 24365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // If P is 0 then W must be 1 (Different from ARM). 24465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t PU1W = am_ >> 21; // Move down to bottom of word. 24565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if ((PU1W & 0b1000) == 0) { 24665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison am |= 1 << 21; // Set W bit. 24765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 24865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (offset_ < 0) { 24965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t off = -offset_; 25065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_LT(off, 1024); 25165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_EQ((off & 0b11), 0); // Must be multiple of 4. 25265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding = (am ^ (1 << kUShift)) | off >> 2; // Flip U to adjust sign. 253b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 25465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_LT(offset_, 1024); 25565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_EQ((offset_ & 0b11), 0); // Must be multiple of 4. 25665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding = am | offset_ >> 2; 257b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 25865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding |= static_cast<uint32_t>(rn_) << 16; 25965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return encoding; 260b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 261b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 26265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison// Encoding for ARM addressing mode 3. 26365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::encoding3() const { 26465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison const uint32_t offset_mask = (1 << 12) - 1; 26565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding = encodingArm(); 26665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t offset = encoding & offset_mask; 26765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_LT(offset, 256u); 26865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (encoding & ~offset_mask) | ((offset & 0xf0) << 4) | (offset & 0xf); 26965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 270b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 27165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison// Encoding for vfp load/store addressing. 27265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::vencoding() const { 27365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison const uint32_t offset_mask = (1 << 12) - 1; 27465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding = encodingArm(); 27565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t offset = encoding & offset_mask; 27665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK(IsAbsoluteUint(10, offset)); // In the range -1020 to +1020. 27765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_ALIGNED(offset, 2); // Multiple of 4. 27865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK((am_ == Offset) || (am_ == NegOffset)); 27965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t vencoding = (encoding & (0xf << kRnShift)) | (offset >> 2); 28065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (am_ == Offset) { 28165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison vencoding |= 1 << 23; 282b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 28365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return vencoding; 284b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 285b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 286b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 28765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldLoadOffsetArm(LoadOperandType type, int offset) { 288b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 289b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedByte: 290b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedHalfword: 291b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadUnsignedHalfword: 292b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWordPair: 293b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(8, offset); // Addressing mode 3. 294b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadUnsignedByte: 295b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWord: 296b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(12, offset); // Addressing mode 2. 297b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSWord: 298b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadDWord: 299b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(10, offset); // VFP addressing mode. 300b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers default: 301b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 302b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return false; 303b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 304b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 305b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 306b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 30765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldStoreOffsetArm(StoreOperandType type, int offset) { 308b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 309b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreHalfword: 310b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWordPair: 311b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(8, offset); // Addressing mode 3. 312b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreByte: 313b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWord: 314b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(12, offset); // Addressing mode 2. 315b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreSWord: 316b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreDWord: 317b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(10, offset); // VFP addressing mode. 318b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers default: 319b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 320b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return false; 321b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 322b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 323b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 32465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldLoadOffsetThumb(LoadOperandType type, int offset) { 325b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 326b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedByte: 327b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedHalfword: 328b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadUnsignedHalfword: 32965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kLoadUnsignedByte: 330b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWord: 33165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(12, offset); 33265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kLoadSWord: 33365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kLoadDWord: 33465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); // VFP addressing mode. 335b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWordPair: 33665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); 33765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 338b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 33965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return false; 340b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 341b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 342b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 343b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 34465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldStoreOffsetThumb(StoreOperandType type, int offset) { 345b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 346b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreHalfword: 34765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kStoreByte: 348b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWord: 34965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(12, offset); 35065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kStoreSWord: 35165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kStoreDWord: 35265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); // VFP addressing mode. 353b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWordPair: 35465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); 35565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 356b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 35765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return false; 358b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 359b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 360b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 36165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonvoid ArmAssembler::Pad(uint32_t bytes) { 36265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison AssemblerBuffer::EnsureCapacity ensured(&buffer_); 36365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison for (uint32_t i = 0; i < bytes; ++i) { 36465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison buffer_.Emit<byte>(0); 3659b9ba28b1277b4ddb967c5a968c6d550febce6afCarl Shapiro } 3669b9ba28b1277b4ddb967c5a968c6d550febce6afCarl Shapiro} 3679b9ba28b1277b4ddb967c5a968c6d550febce6afCarl Shapiro 368790a6b7312979513710c366b411ba6791ddf78c2Ian Rogersconstexpr size_t kFramePointerSize = 4; 369790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers 3702c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::BuildFrame(size_t frame_size, ManagedRegister method_reg, 371b5d09b2f87202bc132ac3991d4b6d71f4f6d9264Ian Rogers const std::vector<ManagedRegister>& callee_save_regs, 372fca82208f7128fcda09b6a4743199308332558a2Dmitry Petrochenko const ManagedRegisterEntrySpills& entry_spills) { 37306b37d91bb3d543002b1aee9829691f5e8bebc7eElliott Hughes CHECK_ALIGNED(frame_size, kStackAlignment); 3742c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers CHECK_EQ(R0, method_reg.AsArm().AsCoreRegister()); 375bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 37600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Push callee saves and link register. 377bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers RegList push_list = 1 << LR; 378bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers size_t pushed_values = 1; 379bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers for (size_t i = 0; i < callee_save_regs.size(); i++) { 380bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers Register reg = callee_save_regs.at(i).AsArm().AsCoreRegister(); 381bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers push_list |= 1 << reg; 382bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers pushed_values++; 3830d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers } 384bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers PushList(push_list); 385bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 38600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Increase frame to required size. 387790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers CHECK_GT(frame_size, pushed_values * kFramePointerSize); // Must at least have space for Method*. 388790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers size_t adjust = frame_size - (pushed_values * kFramePointerSize); 389bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers IncreaseFrameSize(adjust); 390bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 39100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Write out Method*. 392bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers StoreToOffset(kStoreWord, R0, SP, 0); 39300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 39400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Write out entry spills. 39500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers for (size_t i = 0; i < entry_spills.size(); ++i) { 39600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Register reg = entry_spills.at(i).AsArm().AsCoreRegister(); 397790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers StoreToOffset(kStoreWord, reg, SP, frame_size + kFramePointerSize + (i * kFramePointerSize)); 39800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 399b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 400b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4012c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::RemoveFrame(size_t frame_size, 402bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers const std::vector<ManagedRegister>& callee_save_regs) { 40306b37d91bb3d543002b1aee9829691f5e8bebc7eElliott Hughes CHECK_ALIGNED(frame_size, kStackAlignment); 40465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Compute callee saves to pop and PC. 405bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers RegList pop_list = 1 << PC; 406bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers size_t pop_values = 1; 407bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers for (size_t i = 0; i < callee_save_regs.size(); i++) { 408bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers Register reg = callee_save_regs.at(i).AsArm().AsCoreRegister(); 409bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers pop_list |= 1 << reg; 410bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers pop_values++; 4110d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers } 412bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 41365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Decrease frame to start of callee saves. 414790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers CHECK_GT(frame_size, pop_values * kFramePointerSize); 415790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers size_t adjust = frame_size - (pop_values * kFramePointerSize); 416bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers DecreaseFrameSize(adjust); 417bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 41865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Pop callee saves and PC. 419bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers PopList(pop_list); 4200d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers} 4210d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers 4222c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::IncreaseFrameSize(size_t adjust) { 423b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers AddConstant(SP, -adjust); 424b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 425b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4262c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::DecreaseFrameSize(size_t adjust) { 427b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers AddConstant(SP, adjust); 428b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 429b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4302c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::Store(FrameOffset dest, ManagedRegister msrc, size_t size) { 4312c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 432e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro if (src.IsNoRegister()) { 433e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro CHECK_EQ(0u, size); 434e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else if (src.IsCoreRegister()) { 435b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers CHECK_EQ(4u, size); 436b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 437e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else if (src.IsRegisterPair()) { 438e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro CHECK_EQ(8u, size); 439e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreToOffset(kStoreWord, src.AsRegisterPairLow(), SP, dest.Int32Value()); 440e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreToOffset(kStoreWord, src.AsRegisterPairHigh(), 441e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro SP, dest.Int32Value() + 4); 442e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else if (src.IsSRegister()) { 443e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreSToOffset(src.AsSRegister(), SP, dest.Int32Value()); 444b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 445bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsDRegister()) << src; 446e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreDToOffset(src.AsDRegister(), SP, dest.Int32Value()); 447b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 448b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 449b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4502c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreRef(FrameOffset dest, ManagedRegister msrc) { 4512c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 452bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsCoreRegister()) << src; 453b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 454b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 455b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4562c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreRawPtr(FrameOffset dest, ManagedRegister msrc) { 4572c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 458bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsCoreRegister()) << src; 459df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 460df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers} 461df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers 4622c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreSpanning(FrameOffset dest, ManagedRegister msrc, 4632c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers FrameOffset in_off, ManagedRegister mscratch) { 4642c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 4652c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 4667a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 4677a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, in_off.Int32Value()); 4687a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value() + 4); 4697a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers} 4707a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers 4712c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::CopyRef(FrameOffset dest, FrameOffset src, 4722c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 4732c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 474b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value()); 475b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 476b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 477b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4782c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::LoadRef(ManagedRegister mdest, ManagedRegister base, 4792c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers MemberOffset offs) { 480bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = mdest.AsArm(); 481bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister() && dst.IsCoreRegister()) << dst; 482bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), 4832c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers base.AsArm().AsCoreRegister(), offs.Int32Value()); 484e63a745f26fec5a5b4162fc83f6e88a1f696c30cHiroshi Yamauchi if (kPoisonHeapReferences) { 485e63a745f26fec5a5b4162fc83f6e88a1f696c30cHiroshi Yamauchi rsb(dst.AsCoreRegister(), dst.AsCoreRegister(), ShifterOperand(0)); 486e63a745f26fec5a5b4162fc83f6e88a1f696c30cHiroshi Yamauchi } 487b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 488b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4892c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::LoadRef(ManagedRegister mdest, FrameOffset src) { 490bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = mdest.AsArm(); 491bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister()) << dst; 492bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), SP, src.Int32Value()); 493362f9bc807169bcfc8761dde067bbfb79b5ad0fdElliott Hughes} 4942c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers 4952c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::LoadRawPtr(ManagedRegister mdest, ManagedRegister base, 496a04d397b990ee7d3ce120e317c19fb4409d80d57Ian Rogers Offset offs) { 497bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = mdest.AsArm(); 498bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister() && dst.IsCoreRegister()) << dst; 499bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), 5002c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers base.AsArm().AsCoreRegister(), offs.Int32Value()); 501a04d397b990ee7d3ce120e317c19fb4409d80d57Ian Rogers} 502a04d397b990ee7d3ce120e317c19fb4409d80d57Ian Rogers 5032c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreImmediateToFrame(FrameOffset dest, uint32_t imm, 5042c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5052c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 506bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 507b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadImmediate(scratch.AsCoreRegister(), imm); 508b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 509b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 510b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 511dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::StoreImmediateToThread32(ThreadOffset<4> dest, uint32_t imm, 5122c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5132c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 514bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 515b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadImmediate(scratch.AsCoreRegister(), imm); 516b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), TR, dest.Int32Value()); 517b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 518b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 519bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughesstatic void EmitLoad(ArmAssembler* assembler, ManagedRegister m_dst, 520bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes Register src_register, int32_t src_offset, size_t size) { 521bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = m_dst.AsArm(); 522bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (dst.IsNoRegister()) { 523bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK_EQ(0u, size) << dst; 524bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsCoreRegister()) { 525bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK_EQ(4u, size) << dst; 526bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadFromOffset(kLoadWord, dst.AsCoreRegister(), src_register, src_offset); 527bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsRegisterPair()) { 528bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK_EQ(8u, size) << dst; 529bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadFromOffset(kLoadWord, dst.AsRegisterPairLow(), src_register, src_offset); 530bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadFromOffset(kLoadWord, dst.AsRegisterPairHigh(), src_register, src_offset + 4); 531bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsSRegister()) { 532bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadSFromOffset(dst.AsSRegister(), src_register, src_offset); 533b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 534bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsDRegister()) << dst; 535bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadDFromOffset(dst.AsDRegister(), src_register, src_offset); 536b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 537b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 538b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 539bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughesvoid ArmAssembler::Load(ManagedRegister m_dst, FrameOffset src, size_t size) { 540bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes return EmitLoad(this, m_dst, SP, src.Int32Value(), size); 5415a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers} 5425a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers 543dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::LoadFromThread32(ManagedRegister m_dst, ThreadOffset<4> src, size_t size) { 544bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes return EmitLoad(this, m_dst, TR, src.Int32Value(), size); 545bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes} 546bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes 547dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::LoadRawPtrFromThread32(ManagedRegister m_dst, ThreadOffset<4> offs) { 548bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = m_dst.AsArm(); 549bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister()) << dst; 550bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), TR, offs.Int32Value()); 551b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 552b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 553dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::CopyRawPtrFromThread32(FrameOffset fr_offs, 554dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ThreadOffset<4> thr_offs, 5552c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5562c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 557bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 558b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 559b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers TR, thr_offs.Int32Value()); 560b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), 561b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers SP, fr_offs.Int32Value()); 562b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 563b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 564dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::CopyRawPtrToThread32(ThreadOffset<4> thr_offs, 5652c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers FrameOffset fr_offs, 5662c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5672c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 568bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 569b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 570b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers SP, fr_offs.Int32Value()); 571b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), 572b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers TR, thr_offs.Int32Value()); 573b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 574b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 575dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::StoreStackOffsetToThread32(ThreadOffset<4> thr_offs, 5762c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers FrameOffset fr_offs, 5772c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5782c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 579bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 580b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers AddConstant(scratch.AsCoreRegister(), SP, fr_offs.Int32Value(), AL); 581b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), 582b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers TR, thr_offs.Int32Value()); 583b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 584b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 585dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::StoreStackPointerToThread32(ThreadOffset<4> thr_offs) { 58645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers StoreToOffset(kStoreWord, SP, TR, thr_offs.Int32Value()); 58745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers} 58845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 58958136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhaovoid ArmAssembler::SignExtend(ManagedRegister /*mreg*/, size_t /*size*/) { 59058136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhao UNIMPLEMENTED(FATAL) << "no sign extension necessary for arm"; 59158136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhao} 59258136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhao 593cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhaovoid ArmAssembler::ZeroExtend(ManagedRegister /*mreg*/, size_t /*size*/) { 594cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhao UNIMPLEMENTED(FATAL) << "no zero extension necessary for arm"; 595cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhao} 596cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhao 597bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughesvoid ArmAssembler::Move(ManagedRegister m_dst, ManagedRegister m_src, size_t /*size*/) { 598bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = m_dst.AsArm(); 599bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister src = m_src.AsArm(); 600bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (!dst.Equals(src)) { 601bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (dst.IsCoreRegister()) { 602bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsCoreRegister()) << src; 603bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsCoreRegister(), ShifterOperand(src.AsCoreRegister())); 604bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsDRegister()) { 605bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsDRegister()) << src; 606bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes vmovd(dst.AsDRegister(), src.AsDRegister()); 607bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsSRegister()) { 608bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsSRegister()) << src; 609bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes vmovs(dst.AsSRegister(), src.AsSRegister()); 610e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else { 611bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsRegisterPair()) << dst; 612bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsRegisterPair()) << src; 61365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Ensure that the first move doesn't clobber the input of the second. 614bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (src.AsRegisterPairHigh() != dst.AsRegisterPairLow()) { 615bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairLow(), ShifterOperand(src.AsRegisterPairLow())); 616bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairHigh(), ShifterOperand(src.AsRegisterPairHigh())); 6177a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers } else { 618bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairHigh(), ShifterOperand(src.AsRegisterPairHigh())); 619bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairLow(), ShifterOperand(src.AsRegisterPairLow())); 6207a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers } 621e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } 622b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 623b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 624b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 625dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogersvoid ArmAssembler::Copy(FrameOffset dest, FrameOffset src, ManagedRegister mscratch, size_t size) { 6262c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 627bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 628bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(size == 4 || size == 8) << size; 629b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (size == 4) { 630dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value()); 631dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 6325381cf941d26030199fcdbe61a614ff01e55a27cShih-wei Liao } else if (size == 8) { 633dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value()); 634dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 635dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value() + 4); 636dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value() + 4); 637b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 638b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 639b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 640dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogersvoid ArmAssembler::Copy(FrameOffset dest, ManagedRegister src_base, Offset src_offset, 641dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers ManagedRegister mscratch, size_t size) { 642dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers Register scratch = mscratch.AsArm().AsCoreRegister(); 643dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers CHECK_EQ(size, 4u); 644dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch, src_base.AsArm().AsCoreRegister(), src_offset.Int32Value()); 645dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch, SP, dest.Int32Value()); 646dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers} 647dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers 6485a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogersvoid ArmAssembler::Copy(ManagedRegister dest_base, Offset dest_offset, FrameOffset src, 6495a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers ManagedRegister mscratch, size_t size) { 6505a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers Register scratch = mscratch.AsArm().AsCoreRegister(); 6515a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers CHECK_EQ(size, 4u); 6525a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers LoadFromOffset(kLoadWord, scratch, SP, src.Int32Value()); 6535a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers StoreToOffset(kStoreWord, scratch, dest_base.AsArm().AsCoreRegister(), dest_offset.Int32Value()); 6545a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers} 6555a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers 6561bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::Copy(FrameOffset /*dst*/, FrameOffset /*src_base*/, Offset /*src_offset*/, 6571bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes ManagedRegister /*mscratch*/, size_t /*size*/) { 658dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers UNIMPLEMENTED(FATAL); 659dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers} 660dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers 6615a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogersvoid ArmAssembler::Copy(ManagedRegister dest, Offset dest_offset, 6625a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers ManagedRegister src, Offset src_offset, 6635a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers ManagedRegister mscratch, size_t size) { 664dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers CHECK_EQ(size, 4u); 6655a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers Register scratch = mscratch.AsArm().AsCoreRegister(); 6665a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers LoadFromOffset(kLoadWord, scratch, src.AsArm().AsCoreRegister(), src_offset.Int32Value()); 6675a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers StoreToOffset(kStoreWord, scratch, dest.AsArm().AsCoreRegister(), dest_offset.Int32Value()); 6685a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers} 6695a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers 6701bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::Copy(FrameOffset /*dst*/, Offset /*dest_offset*/, FrameOffset /*src*/, Offset /*src_offset*/, 6711bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes ManagedRegister /*scratch*/, size_t /*size*/) { 6725a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers UNIMPLEMENTED(FATAL); 673dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers} 674dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers 675eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiervoid ArmAssembler::CreateHandleScopeEntry(ManagedRegister mout_reg, 676eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier FrameOffset handle_scope_offset, 6772c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister min_reg, bool null_allowed) { 6782c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister out_reg = mout_reg.AsArm(); 6792c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister in_reg = min_reg.AsArm(); 680bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(in_reg.IsNoRegister() || in_reg.IsCoreRegister()) << in_reg; 681bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(out_reg.IsCoreRegister()) << out_reg; 682b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (null_allowed) { 683eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // Null values get a handle scope entry value of 0. Otherwise, the handle scope entry is 684eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // the address in the handle scope holding the reference. 685b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // e.g. out_reg = (handle == 0) ? 0 : (SP+handle_offset) 686e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro if (in_reg.IsNoRegister()) { 687e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, out_reg.AsCoreRegister(), 688eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier SP, handle_scope_offset.Int32Value()); 689e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro in_reg = out_reg; 690e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } 691b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers cmp(in_reg.AsCoreRegister(), ShifterOperand(0)); 692b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (!out_reg.Equals(in_reg)) { 69365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(EQ, kItElse); 694b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadImmediate(out_reg.AsCoreRegister(), 0, EQ); 69565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 69665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(NE); 697b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 698eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(out_reg.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), NE); 699b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 700eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(out_reg.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), AL); 701b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 702b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 703b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 704eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiervoid ArmAssembler::CreateHandleScopeEntry(FrameOffset out_off, 705eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier FrameOffset handle_scope_offset, 7062c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch, 7072c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers bool null_allowed) { 7082c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 709bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 710b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (null_allowed) { 711b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, 712eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier handle_scope_offset.Int32Value()); 713eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // Null values get a handle scope entry value of 0. Otherwise, the handle scope entry is 714eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // the address in the handle scope holding the reference. 715eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // e.g. scratch = (scratch == 0) ? 0 : (SP+handle_scope_offset) 716b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers cmp(scratch.AsCoreRegister(), ShifterOperand(0)); 71765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(NE); 718eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(scratch.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), NE); 719b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 720eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(scratch.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), AL); 721b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 722b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, out_off.Int32Value()); 723b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 724b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 725eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiervoid ArmAssembler::LoadReferenceFromHandleScope(ManagedRegister mout_reg, 7262c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister min_reg) { 7272c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister out_reg = mout_reg.AsArm(); 7282c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister in_reg = min_reg.AsArm(); 729bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(out_reg.IsCoreRegister()) << out_reg; 730bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(in_reg.IsCoreRegister()) << in_reg; 731b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers Label null_arg; 732b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (!out_reg.Equals(in_reg)) { 73365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison LoadImmediate(out_reg.AsCoreRegister(), 0, EQ); // TODO: why EQ? 734b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 735b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers cmp(in_reg.AsCoreRegister(), ShifterOperand(0)); 73665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(NE); 737df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers LoadFromOffset(kLoadWord, out_reg.AsCoreRegister(), 738df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers in_reg.AsCoreRegister(), 0, NE); 739b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 740b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7411bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::VerifyObject(ManagedRegister /*src*/, bool /*could_be_null*/) { 74265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // TODO: not validating references. 743b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 744b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7451bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::VerifyObject(FrameOffset /*src*/, bool /*could_be_null*/) { 74665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // TODO: not validating references. 747b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 748b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7492c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::Call(ManagedRegister mbase, Offset offset, 7502c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 7512c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister base = mbase.AsArm(); 7522c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 753bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(base.IsCoreRegister()) << base; 754bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 755b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 756b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers base.AsCoreRegister(), offset.Int32Value()); 757b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers blx(scratch.AsCoreRegister()); 75865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // TODO: place reference map on call. 759b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 760b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7612c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::Call(FrameOffset base, Offset offset, 7622c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 7632c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 764bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 765e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro // Call *(*(SP + base) + offset) 766e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 767e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro SP, base.Int32Value()); 768e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 769e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro scratch.AsCoreRegister(), offset.Int32Value()); 770e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro blx(scratch.AsCoreRegister()); 771e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro // TODO: place reference map on call 772e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro} 773e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro 774dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::CallFromThread32(ThreadOffset<4> /*offset*/, ManagedRegister /*scratch*/) { 775bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers UNIMPLEMENTED(FATAL); 776bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers} 777bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 7782c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::GetCurrentThread(ManagedRegister tr) { 7792c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers mov(tr.AsArm().AsCoreRegister(), ShifterOperand(TR)); 780668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao} 781668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao 7822c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::GetCurrentThread(FrameOffset offset, 7831bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes ManagedRegister /*scratch*/) { 784668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao StoreToOffset(kStoreWord, TR, SP, offset.Int32Value(), AL); 785668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao} 786668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao 78700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid ArmAssembler::ExceptionPoll(ManagedRegister mscratch, size_t stack_adjust) { 7882c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 78900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ArmExceptionSlowPath* slow = new ArmExceptionSlowPath(scratch, stack_adjust); 790e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro buffer_.EnqueueSlowPath(slow); 791e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 792dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers TR, Thread::ExceptionOffset<4>().Int32Value()); 793e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro cmp(scratch.AsCoreRegister(), ShifterOperand(0)); 794e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro b(slow->Entry(), NE); 795e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro} 796e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro 7972c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmExceptionSlowPath::Emit(Assembler* sasm) { 7982c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmAssembler* sp_asm = down_cast<ArmAssembler*>(sasm); 7992c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers#define __ sp_asm-> 8002c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers __ Bind(&entry_); 80100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (stack_adjust_ != 0) { // Fix up the frame. 80200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers __ DecreaseFrameSize(stack_adjust_); 80300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 80465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Pass exception object as argument. 80565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Don't care about preserving R0 as this call won't return. 80667375acd9fec74cc2054554fe1ed0a7d213e1e47Ian Rogers __ mov(R0, ShifterOperand(scratch_.AsCoreRegister())); 80765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Set up call to Thread::Current()->pDeliverException. 808dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers __ LoadFromOffset(kLoadWord, R12, TR, QUICK_ENTRYPOINT_OFFSET(4, pDeliverException).Int32Value()); 8092c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers __ blx(R12); 81065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Call never returns. 81167375acd9fec74cc2054554fe1ed0a7d213e1e47Ian Rogers __ bkpt(0); 8122c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers#undef __ 81345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers} 81445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 81565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 81665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonstatic int LeadingZeros(uint32_t val) { 81765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t alt; 81865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t n; 81965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t count; 82065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 82165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison count = 16; 82265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison n = 32; 82365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison do { 82465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison alt = val >> count; 82565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (alt != 0) { 82665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison n = n - count; 82765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison val = alt; 82865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 82965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison count >>= 1; 83065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } while (count); 83165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return n - val; 83265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 83365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 83465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 83565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t ArmAssembler::ModifiedImmediate(uint32_t value) { 83665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t z_leading; 83765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t z_trailing; 83865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t b0 = value & 0xff; 83965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 84065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Note: case of value==0 must use 0:000:0:0000000 encoding */ 84165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value <= 0xFF) 84265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return b0; // 0:000:a:bcdefgh. 84365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value == ((b0 << 16) | b0)) 84465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (0x1 << 12) | b0; /* 0:001:a:bcdefgh */ 84565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value == ((b0 << 24) | (b0 << 16) | (b0 << 8) | b0)) 84665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (0x3 << 12) | b0; /* 0:011:a:bcdefgh */ 84765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison b0 = (value >> 8) & 0xff; 84865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value == ((b0 << 24) | (b0 << 8))) 84965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (0x2 << 12) | b0; /* 0:010:a:bcdefgh */ 85065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Can we do it with rotation? */ 85165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison z_leading = LeadingZeros(value); 85265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison z_trailing = 32 - LeadingZeros(~value & (value - 1)); 85365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* A run of eight or fewer active bits? */ 85465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if ((z_leading + z_trailing) < 24) 85565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return kInvalidModifiedImmediate; /* No - bail */ 85665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* left-justify the constant, discarding msb (known to be 1) */ 85765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison value <<= z_leading + 1; 85865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Create bcdefgh */ 85965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison value >>= 25; 86065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 86165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Put it all together */ 86265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t v = 8 + z_leading; 86365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 86465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t i = (v & 0b10000) >> 4; 86565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t imm3 = (v >> 1) & 0b111; 86665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t a = v & 1; 86765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return value | i << 26 | imm3 << 12 | a << 7; 86865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 86965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 8702c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers} // namespace arm 8716b6b5f0e67ce03f38223a525612955663bc1799bCarl Shapiro} // namespace art 872