assembler_arm.cc revision 45fdb93f04b981f70f7b6d98949ab3986b7331f8
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 11445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allisonuint32_t ShifterOperand::encodingThumb() const { 11545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison switch (type_) { 11645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison case kImmediate: 11745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison return immed_; 11845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison case kRegister: 11945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (is_shift_) { 12045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Shifted immediate or register. 12145fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (rs_ == kNoRegister) { 12245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Immediate shift. 12345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (shift_ == RRX) { 12445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // RRX is encoded as an ROR with imm 0. 12545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison return ROR << 4 | static_cast<uint32_t>(rm_); 12665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 12745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison uint32_t imm3 = immed_ >> 2; 12845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison uint32_t imm2 = immed_ & 0b11; 12945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison 13045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison return imm3 << 12 | imm2 << 6 | shift_ << 4 | 13145fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison static_cast<uint32_t>(rm_); 13265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 13365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 13445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison LOG(FATAL) << "No register-shifted register instruction available in thumb"; 13545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison return 0; 13665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 13745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } else { 13845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Simple register 13945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison return static_cast<uint32_t>(rm_); 14045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } 14145fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison break; 14245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison default: 14345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Can't get here. 14445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison LOG(FATAL) << "Invalid shifter operand for thumb"; 14545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison return 0; 146a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro } 14765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return 0; 14865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 14965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 15065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool ShifterOperand::CanHoldThumb(Register rd, Register rn, Opcode opcode, 15165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t immediate, ShifterOperand* shifter_op) { 15265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->type_ = kImmediate; 15365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->immed_ = immediate; 15465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->is_shift_ = false; 15565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison shifter_op->is_rotate_ = false; 15665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison switch (opcode) { 15765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case ADD: 15865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case SUB: 15965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (rn == SP) { 16065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (rd == SP) { 16165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return immediate < (1 << 9); // 9 bits allowed. 16265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 16365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return immediate < (1 << 12); // 12 bits. 16465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 16565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 16665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (immediate < (1 << 12)) { // Less than (or equal to) 12 bits can always be done. 16765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return true; 16865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 16965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return ArmAssembler::ModifiedImmediate(immediate) != kInvalidModifiedImmediate; 170a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro 17165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case MOV: 17265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (immediate < (1 << 12)) { // Less than (or equal to) 12 bits can always be done. 17365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return true; 17465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 17565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return ArmAssembler::ModifiedImmediate(immediate) != kInvalidModifiedImmediate; 17665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case MVN: 17765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 17865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return ArmAssembler::ModifiedImmediate(immediate) != kInvalidModifiedImmediate; 179a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro } 180a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro} 181a2e18e1e77fc25c8260aad5daa267ababfcb65f6Carl Shapiro 18265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::encodingArm() const { 18365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK(IsAbsoluteUint(12, offset_)); 18465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding; 18545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (is_immed_offset_) { 18645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (offset_ < 0) { 18745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding = (am_ ^ (1 << kUShift)) | -offset_; // Flip U to adjust sign. 18845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } else { 18945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding = am_ | offset_; 19045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } 191b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 19245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison uint32_t imm5 = offset_; 19345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison uint32_t shift = shift_; 19445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (shift == RRX) { 19545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison imm5 = 0; 19645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison shift = ROR; 19745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } 19845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding = am_ | static_cast<uint32_t>(rm_) | shift << 5 | offset_ << 7 | B25; 19965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 20065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding |= static_cast<uint32_t>(rn_) << kRnShift; 20165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return encoding; 20265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 20365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 20465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 20545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allisonuint32_t Address::encodingThumb(bool is_32bit) const { 20665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding = 0; 20745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (is_immed_offset_) { 20845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding = static_cast<uint32_t>(rn_) << 16; 20945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Check for the T3/T4 encoding. 21045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // PUW must Offset for T3 21145fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Convert ARM PU0W to PUW 21245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // The Mode is in ARM encoding format which is: 21345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // |P|U|0|W| 21445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // we need this in thumb2 mode: 21545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // |P|U|W| 21645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison 21745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison uint32_t am = am_; 21845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison int32_t offset = offset_; 21945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (offset < 0) { 22045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison am ^= 1 << kUShift; 22145fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison offset = -offset; 22245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } 22345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (offset_ < 0 || (offset >= 0 && offset < 256 && 22465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison am_ != Mode::Offset)) { 22545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // T4 encoding. 22645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison uint32_t PUW = am >> 21; // Move down to bottom of word. 22745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison PUW = (PUW >> 1) | (PUW & 1); // Bits 3, 2 and 0. 22845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // If P is 0 then W must be 1 (Different from ARM). 22945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if ((PUW & 0b100) == 0) { 23045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison PUW |= 0b1; 23165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 23245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding |= B11 | PUW << 8 | offset; 23345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } else { 23445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // T3 encoding (also sets op1 to 0b01). 23545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding |= B23 | offset_; 23645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } 23765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 23845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Register offset, possibly shifted. 23945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Need to choose between encoding T1 (16 bit) or T2. 24045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // Only Offset mode is supported. Shift must be LSL and the count 24145fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison // is only 2 bits. 24245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison CHECK_EQ(shift_, LSL); 24345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison CHECK_LE(offset_, 4); 24445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison CHECK_EQ(am_, Offset); 24545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison bool is_t2 = is_32bit; 24645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (ArmAssembler::IsHighRegister(rn_) || ArmAssembler::IsHighRegister(rm_)) { 24745fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison is_t2 = true; 24845fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } else if (offset_ != 0) { 24945fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison is_t2 = true; 25045fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } 25145fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison if (is_t2) { 25245fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding = static_cast<uint32_t>(rn_) << 16 | static_cast<uint32_t>(rm_) | 25345fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison offset_ << 4; 25445fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } else { 25545fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison encoding = static_cast<uint32_t>(rn_) << 3 | static_cast<uint32_t>(rm_) << 6; 25645fdb93f04b981f70f7b6d98949ab3986b7331f8Dave Allison } 257b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 25865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return encoding; 259b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 260b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 26165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison// This is very like the ARM encoding except the offset is 10 bits. 26265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::encodingThumbLdrdStrd() const { 26365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding; 26465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t am = am_; 26565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // If P is 0 then W must be 1 (Different from ARM). 26665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t PU1W = am_ >> 21; // Move down to bottom of word. 26765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if ((PU1W & 0b1000) == 0) { 26865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison am |= 1 << 21; // Set W bit. 26965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 27065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (offset_ < 0) { 27165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t off = -offset_; 27265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_LT(off, 1024); 27365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_EQ((off & 0b11), 0); // Must be multiple of 4. 27465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding = (am ^ (1 << kUShift)) | off >> 2; // Flip U to adjust sign. 275b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 27665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_LT(offset_, 1024); 27765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_EQ((offset_ & 0b11), 0); // Must be multiple of 4. 27865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding = am | offset_ >> 2; 279b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 28065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison encoding |= static_cast<uint32_t>(rn_) << 16; 28165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return encoding; 282b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 283b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 28465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison// Encoding for ARM addressing mode 3. 28565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::encoding3() const { 28665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison const uint32_t offset_mask = (1 << 12) - 1; 28765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding = encodingArm(); 28865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t offset = encoding & offset_mask; 28965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_LT(offset, 256u); 29065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (encoding & ~offset_mask) | ((offset & 0xf0) << 4) | (offset & 0xf); 29165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 292b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 29365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison// Encoding for vfp load/store addressing. 29465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t Address::vencoding() const { 29565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison const uint32_t offset_mask = (1 << 12) - 1; 29665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t encoding = encodingArm(); 29765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t offset = encoding & offset_mask; 29865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK(IsAbsoluteUint(10, offset)); // In the range -1020 to +1020. 29965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK_ALIGNED(offset, 2); // Multiple of 4. 30065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison CHECK((am_ == Offset) || (am_ == NegOffset)); 30165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t vencoding = (encoding & (0xf << kRnShift)) | (offset >> 2); 30265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (am_ == Offset) { 30365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison vencoding |= 1 << 23; 304b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 30565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return vencoding; 306b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 307b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 308b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 30965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldLoadOffsetArm(LoadOperandType type, int offset) { 310b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 311b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedByte: 312b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedHalfword: 313b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadUnsignedHalfword: 314b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWordPair: 315b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(8, offset); // Addressing mode 3. 316b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadUnsignedByte: 317b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWord: 318b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(12, offset); // Addressing mode 2. 319b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSWord: 320b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadDWord: 321b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(10, offset); // VFP addressing mode. 322b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers default: 323b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 324b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return false; 325b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 326b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 327b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 328b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 32965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldStoreOffsetArm(StoreOperandType type, int offset) { 330b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 331b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreHalfword: 332b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWordPair: 333b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(8, offset); // Addressing mode 3. 334b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreByte: 335b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWord: 336b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(12, offset); // Addressing mode 2. 337b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreSWord: 338b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreDWord: 339b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return IsAbsoluteUint(10, offset); // VFP addressing mode. 340b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers default: 341b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 342b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return false; 343b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 344b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 345b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 34665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldLoadOffsetThumb(LoadOperandType type, int offset) { 347b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 348b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedByte: 349b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadSignedHalfword: 350b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadUnsignedHalfword: 35165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kLoadUnsignedByte: 352b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWord: 35365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(12, offset); 35465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kLoadSWord: 35565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kLoadDWord: 35665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); // VFP addressing mode. 357b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kLoadWordPair: 35865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); 35965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 360b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 36165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return false; 362b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 363b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 364b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 365b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 36665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonbool Address::CanHoldStoreOffsetThumb(StoreOperandType type, int offset) { 367b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers switch (type) { 368b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreHalfword: 36965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kStoreByte: 370b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWord: 37165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(12, offset); 37265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kStoreSWord: 37365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison case kStoreDWord: 37465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); // VFP addressing mode. 375b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers case kStoreWordPair: 37665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return IsAbsoluteUint(10, offset); 37765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison default: 378b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LOG(FATAL) << "UNREACHABLE"; 37965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return false; 380b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 381b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 382b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 38365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonvoid ArmAssembler::Pad(uint32_t bytes) { 38465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison AssemblerBuffer::EnsureCapacity ensured(&buffer_); 38565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison for (uint32_t i = 0; i < bytes; ++i) { 38665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison buffer_.Emit<byte>(0); 3879b9ba28b1277b4ddb967c5a968c6d550febce6afCarl Shapiro } 3889b9ba28b1277b4ddb967c5a968c6d550febce6afCarl Shapiro} 3899b9ba28b1277b4ddb967c5a968c6d550febce6afCarl Shapiro 390790a6b7312979513710c366b411ba6791ddf78c2Ian Rogersconstexpr size_t kFramePointerSize = 4; 391790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers 3922c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::BuildFrame(size_t frame_size, ManagedRegister method_reg, 393b5d09b2f87202bc132ac3991d4b6d71f4f6d9264Ian Rogers const std::vector<ManagedRegister>& callee_save_regs, 394fca82208f7128fcda09b6a4743199308332558a2Dmitry Petrochenko const ManagedRegisterEntrySpills& entry_spills) { 39506b37d91bb3d543002b1aee9829691f5e8bebc7eElliott Hughes CHECK_ALIGNED(frame_size, kStackAlignment); 3962c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers CHECK_EQ(R0, method_reg.AsArm().AsCoreRegister()); 397bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 39800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Push callee saves and link register. 399bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers RegList push_list = 1 << LR; 400bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers size_t pushed_values = 1; 401bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers for (size_t i = 0; i < callee_save_regs.size(); i++) { 402bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers Register reg = callee_save_regs.at(i).AsArm().AsCoreRegister(); 403bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers push_list |= 1 << reg; 404bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers pushed_values++; 4050d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers } 406bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers PushList(push_list); 407bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 40800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Increase frame to required size. 409790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers CHECK_GT(frame_size, pushed_values * kFramePointerSize); // Must at least have space for Method*. 410790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers size_t adjust = frame_size - (pushed_values * kFramePointerSize); 411bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers IncreaseFrameSize(adjust); 412bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 41300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Write out Method*. 414bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers StoreToOffset(kStoreWord, R0, SP, 0); 41500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 41600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Write out entry spills. 41700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers for (size_t i = 0; i < entry_spills.size(); ++i) { 41800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Register reg = entry_spills.at(i).AsArm().AsCoreRegister(); 419790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers StoreToOffset(kStoreWord, reg, SP, frame_size + kFramePointerSize + (i * kFramePointerSize)); 42000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 421b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 422b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4232c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::RemoveFrame(size_t frame_size, 424bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers const std::vector<ManagedRegister>& callee_save_regs) { 42506b37d91bb3d543002b1aee9829691f5e8bebc7eElliott Hughes CHECK_ALIGNED(frame_size, kStackAlignment); 42665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Compute callee saves to pop and PC. 427bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers RegList pop_list = 1 << PC; 428bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers size_t pop_values = 1; 429bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers for (size_t i = 0; i < callee_save_regs.size(); i++) { 430bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers Register reg = callee_save_regs.at(i).AsArm().AsCoreRegister(); 431bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers pop_list |= 1 << reg; 432bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers pop_values++; 4330d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers } 434bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 43565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Decrease frame to start of callee saves. 436790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers CHECK_GT(frame_size, pop_values * kFramePointerSize); 437790a6b7312979513710c366b411ba6791ddf78c2Ian Rogers size_t adjust = frame_size - (pop_values * kFramePointerSize); 438bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers DecreaseFrameSize(adjust); 439bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 44065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Pop callee saves and PC. 441bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers PopList(pop_list); 4420d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers} 4430d666d8769714dcbc2acc4dd5b06f0deffa6e0a1Ian Rogers 4442c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::IncreaseFrameSize(size_t adjust) { 445b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers AddConstant(SP, -adjust); 446b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 447b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4482c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::DecreaseFrameSize(size_t adjust) { 449b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers AddConstant(SP, adjust); 450b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 451b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4522c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::Store(FrameOffset dest, ManagedRegister msrc, size_t size) { 4532c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 454e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro if (src.IsNoRegister()) { 455e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro CHECK_EQ(0u, size); 456e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else if (src.IsCoreRegister()) { 457b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers CHECK_EQ(4u, size); 458b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 459e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else if (src.IsRegisterPair()) { 460e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro CHECK_EQ(8u, size); 461e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreToOffset(kStoreWord, src.AsRegisterPairLow(), SP, dest.Int32Value()); 462e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreToOffset(kStoreWord, src.AsRegisterPairHigh(), 463e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro SP, dest.Int32Value() + 4); 464e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else if (src.IsSRegister()) { 465e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreSToOffset(src.AsSRegister(), SP, dest.Int32Value()); 466b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 467bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsDRegister()) << src; 468e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro StoreDToOffset(src.AsDRegister(), SP, dest.Int32Value()); 469b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 470b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 471b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4722c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreRef(FrameOffset dest, ManagedRegister msrc) { 4732c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 474bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsCoreRegister()) << src; 475b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 476b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 477b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 4782c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreRawPtr(FrameOffset dest, ManagedRegister msrc) { 4792c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 480bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsCoreRegister()) << src; 481df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 482df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers} 483df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers 4842c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreSpanning(FrameOffset dest, ManagedRegister msrc, 4852c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers FrameOffset in_off, ManagedRegister mscratch) { 4862c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister src = msrc.AsArm(); 4872c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 4887a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers StoreToOffset(kStoreWord, src.AsCoreRegister(), SP, dest.Int32Value()); 4897a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, in_off.Int32Value()); 4907a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value() + 4); 4917a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers} 4927a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers 4932c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::CopyRef(FrameOffset dest, FrameOffset src, 4942c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 4952c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 496b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value()); 497b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 498b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 499b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 5002c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::LoadRef(ManagedRegister mdest, ManagedRegister base, 5012c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers MemberOffset offs) { 502bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = mdest.AsArm(); 503bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister() && dst.IsCoreRegister()) << dst; 504bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), 5052c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers base.AsArm().AsCoreRegister(), offs.Int32Value()); 506e63a745f26fec5a5b4162fc83f6e88a1f696c30cHiroshi Yamauchi if (kPoisonHeapReferences) { 507e63a745f26fec5a5b4162fc83f6e88a1f696c30cHiroshi Yamauchi rsb(dst.AsCoreRegister(), dst.AsCoreRegister(), ShifterOperand(0)); 508e63a745f26fec5a5b4162fc83f6e88a1f696c30cHiroshi Yamauchi } 509b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 510b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 5112c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::LoadRef(ManagedRegister mdest, FrameOffset src) { 512bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = mdest.AsArm(); 513bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister()) << dst; 514bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), SP, src.Int32Value()); 515362f9bc807169bcfc8761dde067bbfb79b5ad0fdElliott Hughes} 5162c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers 5172c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::LoadRawPtr(ManagedRegister mdest, ManagedRegister base, 518a04d397b990ee7d3ce120e317c19fb4409d80d57Ian Rogers Offset offs) { 519bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = mdest.AsArm(); 520bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister() && dst.IsCoreRegister()) << dst; 521bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), 5222c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers base.AsArm().AsCoreRegister(), offs.Int32Value()); 523a04d397b990ee7d3ce120e317c19fb4409d80d57Ian Rogers} 524a04d397b990ee7d3ce120e317c19fb4409d80d57Ian Rogers 5252c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::StoreImmediateToFrame(FrameOffset dest, uint32_t imm, 5262c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5272c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 528bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 529b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadImmediate(scratch.AsCoreRegister(), imm); 530b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 531b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 532b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 533dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::StoreImmediateToThread32(ThreadOffset<4> dest, uint32_t imm, 5342c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5352c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 536bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 537b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadImmediate(scratch.AsCoreRegister(), imm); 538b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), TR, dest.Int32Value()); 539b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 540b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 541bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughesstatic void EmitLoad(ArmAssembler* assembler, ManagedRegister m_dst, 542bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes Register src_register, int32_t src_offset, size_t size) { 543bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = m_dst.AsArm(); 544bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (dst.IsNoRegister()) { 545bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK_EQ(0u, size) << dst; 546bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsCoreRegister()) { 547bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK_EQ(4u, size) << dst; 548bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadFromOffset(kLoadWord, dst.AsCoreRegister(), src_register, src_offset); 549bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsRegisterPair()) { 550bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK_EQ(8u, size) << dst; 551bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadFromOffset(kLoadWord, dst.AsRegisterPairLow(), src_register, src_offset); 552bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadFromOffset(kLoadWord, dst.AsRegisterPairHigh(), src_register, src_offset + 4); 553bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsSRegister()) { 554bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadSFromOffset(dst.AsSRegister(), src_register, src_offset); 555b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 556bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsDRegister()) << dst; 557bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes assembler->LoadDFromOffset(dst.AsDRegister(), src_register, src_offset); 558b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 559b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 560b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 561bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughesvoid ArmAssembler::Load(ManagedRegister m_dst, FrameOffset src, size_t size) { 562bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes return EmitLoad(this, m_dst, SP, src.Int32Value(), size); 5635a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers} 5645a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers 565dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::LoadFromThread32(ManagedRegister m_dst, ThreadOffset<4> src, size_t size) { 566bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes return EmitLoad(this, m_dst, TR, src.Int32Value(), size); 567bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes} 568bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes 569dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::LoadRawPtrFromThread32(ManagedRegister m_dst, ThreadOffset<4> offs) { 570bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = m_dst.AsArm(); 571bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsCoreRegister()) << dst; 572bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes LoadFromOffset(kLoadWord, dst.AsCoreRegister(), TR, offs.Int32Value()); 573b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 574b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 575dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::CopyRawPtrFromThread32(FrameOffset fr_offs, 576dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ThreadOffset<4> thr_offs, 5772c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5782c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 579bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 580b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 581b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers TR, thr_offs.Int32Value()); 582b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), 583b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers SP, fr_offs.Int32Value()); 584b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 585b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 586dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::CopyRawPtrToThread32(ThreadOffset<4> thr_offs, 5872c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers FrameOffset fr_offs, 5882c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 5892c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 590bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 591b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 592b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers SP, fr_offs.Int32Value()); 593b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), 594b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers TR, thr_offs.Int32Value()); 595b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 596b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 597dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::StoreStackOffsetToThread32(ThreadOffset<4> thr_offs, 5982c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers FrameOffset fr_offs, 5992c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 6002c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 601bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 602b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers AddConstant(scratch.AsCoreRegister(), SP, fr_offs.Int32Value(), AL); 603b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), 604b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers TR, thr_offs.Int32Value()); 605b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 606b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 607dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::StoreStackPointerToThread32(ThreadOffset<4> thr_offs) { 60845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers StoreToOffset(kStoreWord, SP, TR, thr_offs.Int32Value()); 60945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers} 61045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 61158136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhaovoid ArmAssembler::SignExtend(ManagedRegister /*mreg*/, size_t /*size*/) { 61258136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhao UNIMPLEMENTED(FATAL) << "no sign extension necessary for arm"; 61358136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhao} 61458136caeec7cb677bb83c2eafd1f4bab5afd96c8jeffhao 615cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhaovoid ArmAssembler::ZeroExtend(ManagedRegister /*mreg*/, size_t /*size*/) { 616cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhao UNIMPLEMENTED(FATAL) << "no zero extension necessary for arm"; 617cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhao} 618cee4d0c1c2faacf0eae748a24cc7e455e067d977jeffhao 619bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughesvoid ArmAssembler::Move(ManagedRegister m_dst, ManagedRegister m_src, size_t /*size*/) { 620bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister dst = m_dst.AsArm(); 621bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes ArmManagedRegister src = m_src.AsArm(); 622bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (!dst.Equals(src)) { 623bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (dst.IsCoreRegister()) { 624bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsCoreRegister()) << src; 625bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsCoreRegister(), ShifterOperand(src.AsCoreRegister())); 626bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsDRegister()) { 627bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsDRegister()) << src; 628bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes vmovd(dst.AsDRegister(), src.AsDRegister()); 629bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes } else if (dst.IsSRegister()) { 630bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsSRegister()) << src; 631bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes vmovs(dst.AsSRegister(), src.AsSRegister()); 632e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } else { 633bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(dst.IsRegisterPair()) << dst; 634bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(src.IsRegisterPair()) << src; 63565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Ensure that the first move doesn't clobber the input of the second. 636bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes if (src.AsRegisterPairHigh() != dst.AsRegisterPairLow()) { 637bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairLow(), ShifterOperand(src.AsRegisterPairLow())); 638bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairHigh(), ShifterOperand(src.AsRegisterPairHigh())); 6397a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers } else { 640bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairHigh(), ShifterOperand(src.AsRegisterPairHigh())); 641bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes mov(dst.AsRegisterPairLow(), ShifterOperand(src.AsRegisterPairLow())); 6427a99c11d220ec68c208b507570e3a78c2c18a7a1Ian Rogers } 643e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } 644b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 645b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 646b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 647dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogersvoid ArmAssembler::Copy(FrameOffset dest, FrameOffset src, ManagedRegister mscratch, size_t size) { 6482c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 649bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 650bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(size == 4 || size == 8) << size; 651b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (size == 4) { 652dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value()); 653dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 6545381cf941d26030199fcdbe61a614ff01e55a27cShih-wei Liao } else if (size == 8) { 655dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value()); 656dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value()); 657dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, src.Int32Value() + 4); 658dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, dest.Int32Value() + 4); 659b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 660b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 661b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 662dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogersvoid ArmAssembler::Copy(FrameOffset dest, ManagedRegister src_base, Offset src_offset, 663dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers ManagedRegister mscratch, size_t size) { 664dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers Register scratch = mscratch.AsArm().AsCoreRegister(); 665dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers CHECK_EQ(size, 4u); 666dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers LoadFromOffset(kLoadWord, scratch, src_base.AsArm().AsCoreRegister(), src_offset.Int32Value()); 667dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers StoreToOffset(kStoreWord, scratch, SP, dest.Int32Value()); 668dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers} 669dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers 6705a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogersvoid ArmAssembler::Copy(ManagedRegister dest_base, Offset dest_offset, FrameOffset src, 6715a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers ManagedRegister mscratch, size_t size) { 6725a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers Register scratch = mscratch.AsArm().AsCoreRegister(); 6735a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers CHECK_EQ(size, 4u); 6745a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers LoadFromOffset(kLoadWord, scratch, SP, src.Int32Value()); 6755a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers StoreToOffset(kStoreWord, scratch, dest_base.AsArm().AsCoreRegister(), dest_offset.Int32Value()); 6765a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers} 6775a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers 6781bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::Copy(FrameOffset /*dst*/, FrameOffset /*src_base*/, Offset /*src_offset*/, 6791bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes ManagedRegister /*mscratch*/, size_t /*size*/) { 680dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers UNIMPLEMENTED(FATAL); 681dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers} 682dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers 6835a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogersvoid ArmAssembler::Copy(ManagedRegister dest, Offset dest_offset, 6845a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers ManagedRegister src, Offset src_offset, 6855a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers ManagedRegister mscratch, size_t size) { 686dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers CHECK_EQ(size, 4u); 6875a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers Register scratch = mscratch.AsArm().AsCoreRegister(); 6885a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers LoadFromOffset(kLoadWord, scratch, src.AsArm().AsCoreRegister(), src_offset.Int32Value()); 6895a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers StoreToOffset(kStoreWord, scratch, dest.AsArm().AsCoreRegister(), dest_offset.Int32Value()); 6905a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers} 6915a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers 6921bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::Copy(FrameOffset /*dst*/, Offset /*dest_offset*/, FrameOffset /*src*/, Offset /*src_offset*/, 6931bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes ManagedRegister /*scratch*/, size_t /*size*/) { 6945a7a74a042e73a355f5cedffa0d2faf5340028faIan Rogers UNIMPLEMENTED(FATAL); 695dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers} 696dc51b79e65abcdad094ccd5e5a2caf5153433d49Ian Rogers 697eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiervoid ArmAssembler::CreateHandleScopeEntry(ManagedRegister mout_reg, 698eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier FrameOffset handle_scope_offset, 6992c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister min_reg, bool null_allowed) { 7002c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister out_reg = mout_reg.AsArm(); 7012c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister in_reg = min_reg.AsArm(); 702bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(in_reg.IsNoRegister() || in_reg.IsCoreRegister()) << in_reg; 703bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(out_reg.IsCoreRegister()) << out_reg; 704b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (null_allowed) { 705eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // Null values get a handle scope entry value of 0. Otherwise, the handle scope entry is 706eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // the address in the handle scope holding the reference. 707b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // e.g. out_reg = (handle == 0) ? 0 : (SP+handle_offset) 708e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro if (in_reg.IsNoRegister()) { 709e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, out_reg.AsCoreRegister(), 710eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier SP, handle_scope_offset.Int32Value()); 711e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro in_reg = out_reg; 712e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro } 713b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers cmp(in_reg.AsCoreRegister(), ShifterOperand(0)); 714b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (!out_reg.Equals(in_reg)) { 71565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(EQ, kItElse); 716b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadImmediate(out_reg.AsCoreRegister(), 0, EQ); 71765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } else { 71865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(NE); 719b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 720eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(out_reg.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), NE); 721b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 722eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(out_reg.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), AL); 723b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 724b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 725b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 726eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiervoid ArmAssembler::CreateHandleScopeEntry(FrameOffset out_off, 727eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier FrameOffset handle_scope_offset, 7282c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch, 7292c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers bool null_allowed) { 7302c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 731bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 732b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (null_allowed) { 733b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), SP, 734eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier handle_scope_offset.Int32Value()); 735eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // Null values get a handle scope entry value of 0. Otherwise, the handle scope entry is 736eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // the address in the handle scope holding the reference. 737eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // e.g. scratch = (scratch == 0) ? 0 : (SP+handle_scope_offset) 738b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers cmp(scratch.AsCoreRegister(), ShifterOperand(0)); 73965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(NE); 740eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(scratch.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), NE); 741b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } else { 742eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier AddConstant(scratch.AsCoreRegister(), SP, handle_scope_offset.Int32Value(), AL); 743b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 744b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StoreToOffset(kStoreWord, scratch.AsCoreRegister(), SP, out_off.Int32Value()); 745b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 746b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 747eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiervoid ArmAssembler::LoadReferenceFromHandleScope(ManagedRegister mout_reg, 7482c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister min_reg) { 7492c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister out_reg = mout_reg.AsArm(); 7502c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister in_reg = min_reg.AsArm(); 751bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(out_reg.IsCoreRegister()) << out_reg; 752bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(in_reg.IsCoreRegister()) << in_reg; 753b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers Label null_arg; 754b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers if (!out_reg.Equals(in_reg)) { 75565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison LoadImmediate(out_reg.AsCoreRegister(), 0, EQ); // TODO: why EQ? 756b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 757b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers cmp(in_reg.AsCoreRegister(), ShifterOperand(0)); 75865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison it(NE); 759df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers LoadFromOffset(kLoadWord, out_reg.AsCoreRegister(), 760df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers in_reg.AsCoreRegister(), 0, NE); 761b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 762b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7631bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::VerifyObject(ManagedRegister /*src*/, bool /*could_be_null*/) { 76465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // TODO: not validating references. 765b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 766b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7671bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughesvoid ArmAssembler::VerifyObject(FrameOffset /*src*/, bool /*could_be_null*/) { 76865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // TODO: not validating references. 769b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 770b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7712c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::Call(ManagedRegister mbase, Offset offset, 7722c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 7732c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister base = mbase.AsArm(); 7742c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 775bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(base.IsCoreRegister()) << base; 776bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 777b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 778b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers base.AsCoreRegister(), offset.Int32Value()); 779b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers blx(scratch.AsCoreRegister()); 78065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // TODO: place reference map on call. 781b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers} 782b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 7832c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::Call(FrameOffset base, Offset offset, 7842c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ManagedRegister mscratch) { 7852c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 786bf2739d3b58ee5b2f190007499f1fbfd0b3441ceElliott Hughes CHECK(scratch.IsCoreRegister()) << scratch; 787e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro // Call *(*(SP + base) + offset) 788e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 789e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro SP, base.Int32Value()); 790e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 791e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro scratch.AsCoreRegister(), offset.Int32Value()); 792e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro blx(scratch.AsCoreRegister()); 793e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro // TODO: place reference map on call 794e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro} 795e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro 796dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid ArmAssembler::CallFromThread32(ThreadOffset<4> /*offset*/, ManagedRegister /*scratch*/) { 797bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers UNIMPLEMENTED(FATAL); 798bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers} 799bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 8002c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::GetCurrentThread(ManagedRegister tr) { 8012c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers mov(tr.AsArm().AsCoreRegister(), ShifterOperand(TR)); 802668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao} 803668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao 8042c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmAssembler::GetCurrentThread(FrameOffset offset, 8051bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes ManagedRegister /*scratch*/) { 806668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao StoreToOffset(kStoreWord, TR, SP, offset.Int32Value(), AL); 807668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao} 808668512afd0d9b3772a0abc589208b729ee16bc61Shih-wei Liao 80900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid ArmAssembler::ExceptionPoll(ManagedRegister mscratch, size_t stack_adjust) { 8102c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmManagedRegister scratch = mscratch.AsArm(); 81100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ArmExceptionSlowPath* slow = new ArmExceptionSlowPath(scratch, stack_adjust); 812e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro buffer_.EnqueueSlowPath(slow); 813e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro LoadFromOffset(kLoadWord, scratch.AsCoreRegister(), 814dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers TR, Thread::ExceptionOffset<4>().Int32Value()); 815e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro cmp(scratch.AsCoreRegister(), ShifterOperand(0)); 816e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro b(slow->Entry(), NE); 817e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro} 818e2d373e6e09c1df9a47e73a26254048adb31ce82Carl Shapiro 8192c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogersvoid ArmExceptionSlowPath::Emit(Assembler* sasm) { 8202c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers ArmAssembler* sp_asm = down_cast<ArmAssembler*>(sasm); 8212c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers#define __ sp_asm-> 8222c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers __ Bind(&entry_); 82300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (stack_adjust_ != 0) { // Fix up the frame. 82400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers __ DecreaseFrameSize(stack_adjust_); 82500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 82665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Pass exception object as argument. 82765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Don't care about preserving R0 as this call won't return. 82867375acd9fec74cc2054554fe1ed0a7d213e1e47Ian Rogers __ mov(R0, ShifterOperand(scratch_.AsCoreRegister())); 82965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Set up call to Thread::Current()->pDeliverException. 830dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers __ LoadFromOffset(kLoadWord, R12, TR, QUICK_ENTRYPOINT_OFFSET(4, pDeliverException).Int32Value()); 8312c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers __ blx(R12); 83265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison // Call never returns. 83367375acd9fec74cc2054554fe1ed0a7d213e1e47Ian Rogers __ bkpt(0); 8342c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers#undef __ 83545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers} 83645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 83765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 83865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonstatic int LeadingZeros(uint32_t val) { 83965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t alt; 84065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t n; 84165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t count; 84265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 84365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison count = 16; 84465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison n = 32; 84565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison do { 84665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison alt = val >> count; 84765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (alt != 0) { 84865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison n = n - count; 84965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison val = alt; 85065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } 85165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison count >>= 1; 85265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison } while (count); 85365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return n - val; 85465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 85565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 85665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 85765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allisonuint32_t ArmAssembler::ModifiedImmediate(uint32_t value) { 85865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t z_leading; 85965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison int32_t z_trailing; 86065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t b0 = value & 0xff; 86165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 86265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Note: case of value==0 must use 0:000:0:0000000 encoding */ 86365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value <= 0xFF) 86465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return b0; // 0:000:a:bcdefgh. 86565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value == ((b0 << 16) | b0)) 86665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (0x1 << 12) | b0; /* 0:001:a:bcdefgh */ 86765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value == ((b0 << 24) | (b0 << 16) | (b0 << 8) | b0)) 86865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (0x3 << 12) | b0; /* 0:011:a:bcdefgh */ 86965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison b0 = (value >> 8) & 0xff; 87065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if (value == ((b0 << 24) | (b0 << 8))) 87165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return (0x2 << 12) | b0; /* 0:010:a:bcdefgh */ 87265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Can we do it with rotation? */ 87365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison z_leading = LeadingZeros(value); 87465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison z_trailing = 32 - LeadingZeros(~value & (value - 1)); 87565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* A run of eight or fewer active bits? */ 87665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison if ((z_leading + z_trailing) < 24) 87765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return kInvalidModifiedImmediate; /* No - bail */ 87865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* left-justify the constant, discarding msb (known to be 1) */ 87965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison value <<= z_leading + 1; 88065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Create bcdefgh */ 88165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison value >>= 25; 88265fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 88365fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison /* Put it all together */ 88465fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t v = 8 + z_leading; 88565fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 88665fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t i = (v & 0b10000) >> 4; 88765fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t imm3 = (v >> 1) & 0b111; 88865fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison uint32_t a = v & 1; 88965fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison return value | i << 26 | imm3 << 12 | a << 7; 89065fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison} 89165fcc2cf3c5cd97b84330c094908f3a6a7a8d4e7Dave Allison 8922c8f653c98d658419f464b6147c10e11a664d2e6Ian Rogers} // namespace arm 8936b6b5f0e67ce03f38223a525612955663bc1799bCarl Shapiro} // namespace art 894