buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
buzbee | 1bc37c6 | 2012-11-20 13:35:41 -0800 | [diff] [blame] | 17 | #include "arm_lir.h" |
| 18 | #include "../codegen_util.h" |
| 19 | #include "../ralloc_util.h" |
| 20 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 21 | namespace art { |
| 22 | |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 23 | /* This file contains codegen for the Thumb ISA. */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 24 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 25 | int EncodeImmSingle(int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 26 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 27 | int res; |
| 28 | int bitA = (value & 0x80000000) >> 31; |
| 29 | int notBitB = (value & 0x40000000) >> 30; |
| 30 | int bitB = (value & 0x20000000) >> 29; |
| 31 | int bSmear = (value & 0x3e000000) >> 25; |
| 32 | int slice = (value & 0x01f80000) >> 19; |
| 33 | int zeroes = (value & 0x0007ffff); |
| 34 | if (zeroes != 0) |
| 35 | return -1; |
| 36 | if (bitB) { |
| 37 | if ((notBitB != 0) || (bSmear != 0x1f)) |
| 38 | return -1; |
| 39 | } else { |
| 40 | if ((notBitB != 1) || (bSmear != 0x0)) |
| 41 | return -1; |
| 42 | } |
| 43 | res = (bitA << 7) | (bitB << 6) | slice; |
| 44 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 45 | } |
| 46 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 47 | LIR* LoadFPConstantValue(CompilationUnit* cUnit, int rDest, int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 48 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 49 | int encodedImm = EncodeImmSingle(value); |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 50 | DCHECK(ARM_SINGLEREG(rDest)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 51 | if (encodedImm >= 0) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 52 | return NewLIR2(cUnit, kThumb2Vmovs_IMM8, rDest, encodedImm); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 53 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 54 | LIR* dataTarget = ScanLiteralPool(cUnit->literalList, value, 0); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 55 | if (dataTarget == NULL) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 56 | dataTarget = AddWordData(cUnit, &cUnit->literalList, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 57 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 58 | LIR* loadPcRel = RawLIR(cUnit, cUnit->currentDalvikOffset, kThumb2Vldrs, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 59 | rDest, r15pc, 0, 0, 0, dataTarget); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 60 | SetMemRefType(loadPcRel, true, kLiteral); |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 61 | loadPcRel->aliasInfo = reinterpret_cast<uintptr_t>(dataTarget); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 62 | AppendLIR(cUnit, loadPcRel); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 63 | return loadPcRel; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 64 | } |
| 65 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 66 | int LeadingZeros(uint32_t val) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 67 | { |
buzbee | eaf09bc | 2012-11-15 14:51:41 -0800 | [diff] [blame] | 68 | uint32_t alt; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 69 | int n; |
| 70 | int count; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 71 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 72 | count = 16; |
| 73 | n = 32; |
| 74 | do { |
| 75 | alt = val >> count; |
| 76 | if (alt != 0) { |
| 77 | n = n - count; |
| 78 | val = alt; |
| 79 | } |
| 80 | count >>= 1; |
| 81 | } while (count); |
| 82 | return n - val; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | /* |
| 86 | * Determine whether value can be encoded as a Thumb2 modified |
| 87 | * immediate. If not, return -1. If so, return i:imm3:a:bcdefgh form. |
| 88 | */ |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 89 | int ModifiedImmediate(uint32_t value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 90 | { |
| 91 | int zLeading; |
| 92 | int zTrailing; |
buzbee | eaf09bc | 2012-11-15 14:51:41 -0800 | [diff] [blame] | 93 | uint32_t b0 = value & 0xff; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 94 | |
| 95 | /* Note: case of value==0 must use 0:000:0:0000000 encoding */ |
| 96 | if (value <= 0xFF) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 97 | return b0; // 0:000:a:bcdefgh |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 98 | if (value == ((b0 << 16) | b0)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 99 | return (0x1 << 8) | b0; /* 0:001:a:bcdefgh */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 100 | if (value == ((b0 << 24) | (b0 << 16) | (b0 << 8) | b0)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 101 | return (0x3 << 8) | b0; /* 0:011:a:bcdefgh */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 102 | b0 = (value >> 8) & 0xff; |
| 103 | if (value == ((b0 << 24) | (b0 << 8))) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 104 | return (0x2 << 8) | b0; /* 0:010:a:bcdefgh */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 105 | /* Can we do it with rotation? */ |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 106 | zLeading = LeadingZeros(value); |
| 107 | zTrailing = 32 - LeadingZeros(~value & (value - 1)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 108 | /* A run of eight or fewer active bits? */ |
| 109 | if ((zLeading + zTrailing) < 24) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 110 | return -1; /* No - bail */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 111 | /* left-justify the constant, discarding msb (known to be 1) */ |
| 112 | value <<= zLeading + 1; |
| 113 | /* Create bcdefgh */ |
| 114 | value >>= 25; |
| 115 | /* Put it all together */ |
| 116 | return value | ((0x8 + zLeading) << 7); /* [01000..11111]:bcdefgh */ |
| 117 | } |
| 118 | |
| 119 | /* |
| 120 | * Load a immediate using a shortcut if possible; otherwise |
| 121 | * grab from the per-translation literal pool. |
| 122 | * |
| 123 | * No additional register clobbering operation performed. Use this version when |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 124 | * 1) rDest is freshly returned from AllocTemp or |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 125 | * 2) The codegen is under fixed register usage |
| 126 | */ |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 127 | LIR* LoadConstantNoClobber(CompilationUnit* cUnit, int rDest, int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 128 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 129 | LIR* res; |
| 130 | int modImm; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 131 | |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 132 | if (ARM_FPREG(rDest)) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 133 | return LoadFPConstantValue(cUnit, rDest, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 134 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 135 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 136 | /* See if the value can be constructed cheaply */ |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 137 | if (ARM_LOWREG(rDest) && (value >= 0) && (value <= 255)) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 138 | return NewLIR2(cUnit, kThumbMovImm, rDest, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 139 | } |
| 140 | /* Check Modified immediate special cases */ |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 141 | modImm = ModifiedImmediate(value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 142 | if (modImm >= 0) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 143 | res = NewLIR2(cUnit, kThumb2MovImmShift, rDest, modImm); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 144 | return res; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 145 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 146 | modImm = ModifiedImmediate(~value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 147 | if (modImm >= 0) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 148 | res = NewLIR2(cUnit, kThumb2MvnImm12, rDest, modImm); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 149 | return res; |
| 150 | } |
| 151 | /* 16-bit immediate? */ |
| 152 | if ((value & 0xffff) == value) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 153 | res = NewLIR2(cUnit, kThumb2MovImm16, rDest, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 154 | return res; |
| 155 | } |
| 156 | /* No shortcut - go ahead and use literal pool */ |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 157 | LIR* dataTarget = ScanLiteralPool(cUnit->literalList, value, 0); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 158 | if (dataTarget == NULL) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 159 | dataTarget = AddWordData(cUnit, &cUnit->literalList, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 160 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 161 | LIR* loadPcRel = RawLIR(cUnit, cUnit->currentDalvikOffset, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 162 | kThumb2LdrPcRel12, rDest, 0, 0, 0, 0, dataTarget); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 163 | SetMemRefType(loadPcRel, true, kLiteral); |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 164 | loadPcRel->aliasInfo = reinterpret_cast<uintptr_t>(dataTarget); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 165 | res = loadPcRel; |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 166 | AppendLIR(cUnit, loadPcRel); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 167 | |
| 168 | /* |
| 169 | * To save space in the constant pool, we use the ADD_RRI8 instruction to |
| 170 | * add up to 255 to an existing constant value. |
| 171 | */ |
| 172 | if (dataTarget->operands[0] != value) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 173 | OpRegImm(cUnit, kOpAdd, rDest, value - dataTarget->operands[0]); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 174 | } |
| 175 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 176 | } |
| 177 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 178 | LIR* OpBranchUnconditional(CompilationUnit* cUnit, OpKind op) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 179 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 180 | DCHECK_EQ(op, kOpUncondBr); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 181 | return NewLIR1(cUnit, kThumbBUncond, 0 /* offset to be patched */); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 182 | } |
| 183 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 184 | LIR* OpCondBranch(CompilationUnit* cUnit, ConditionCode cc, LIR* target) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 185 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 186 | LIR* branch = NewLIR2(cUnit, kThumb2BCond, 0 /* offset to be patched */, |
| 187 | ArmConditionEncoding(cc)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 188 | branch->target = target; |
| 189 | return branch; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 190 | } |
| 191 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 192 | LIR* OpReg(CompilationUnit* cUnit, OpKind op, int rDestSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 193 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 194 | ArmOpcode opcode = kThumbBkpt; |
| 195 | switch (op) { |
| 196 | case kOpBlx: |
| 197 | opcode = kThumbBlxR; |
| 198 | break; |
| 199 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 200 | LOG(FATAL) << "Bad opcode " << op; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 201 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 202 | return NewLIR1(cUnit, opcode, rDestSrc); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 203 | } |
| 204 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 205 | LIR* OpRegRegShift(CompilationUnit* cUnit, OpKind op, int rDestSrc1, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 206 | int rSrc2, int shift) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 207 | { |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 208 | bool thumbForm = ((shift == 0) && ARM_LOWREG(rDestSrc1) && ARM_LOWREG(rSrc2)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 209 | ArmOpcode opcode = kThumbBkpt; |
| 210 | switch (op) { |
| 211 | case kOpAdc: |
| 212 | opcode = (thumbForm) ? kThumbAdcRR : kThumb2AdcRRR; |
| 213 | break; |
| 214 | case kOpAnd: |
| 215 | opcode = (thumbForm) ? kThumbAndRR : kThumb2AndRRR; |
| 216 | break; |
| 217 | case kOpBic: |
| 218 | opcode = (thumbForm) ? kThumbBicRR : kThumb2BicRRR; |
| 219 | break; |
| 220 | case kOpCmn: |
| 221 | DCHECK_EQ(shift, 0); |
| 222 | opcode = (thumbForm) ? kThumbCmnRR : kThumb2CmnRR; |
| 223 | break; |
| 224 | case kOpCmp: |
| 225 | if (thumbForm) |
| 226 | opcode = kThumbCmpRR; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 227 | else if ((shift == 0) && !ARM_LOWREG(rDestSrc1) && !ARM_LOWREG(rSrc2)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 228 | opcode = kThumbCmpHH; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 229 | else if ((shift == 0) && ARM_LOWREG(rDestSrc1)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 230 | opcode = kThumbCmpLH; |
| 231 | else if (shift == 0) |
| 232 | opcode = kThumbCmpHL; |
| 233 | else |
| 234 | opcode = kThumb2CmpRR; |
| 235 | break; |
| 236 | case kOpXor: |
| 237 | opcode = (thumbForm) ? kThumbEorRR : kThumb2EorRRR; |
| 238 | break; |
| 239 | case kOpMov: |
| 240 | DCHECK_EQ(shift, 0); |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 241 | if (ARM_LOWREG(rDestSrc1) && ARM_LOWREG(rSrc2)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 242 | opcode = kThumbMovRR; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 243 | else if (!ARM_LOWREG(rDestSrc1) && !ARM_LOWREG(rSrc2)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 244 | opcode = kThumbMovRR_H2H; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 245 | else if (ARM_LOWREG(rDestSrc1)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 246 | opcode = kThumbMovRR_H2L; |
| 247 | else |
| 248 | opcode = kThumbMovRR_L2H; |
| 249 | break; |
| 250 | case kOpMul: |
| 251 | DCHECK_EQ(shift, 0); |
| 252 | opcode = (thumbForm) ? kThumbMul : kThumb2MulRRR; |
| 253 | break; |
| 254 | case kOpMvn: |
| 255 | opcode = (thumbForm) ? kThumbMvn : kThumb2MnvRR; |
| 256 | break; |
| 257 | case kOpNeg: |
| 258 | DCHECK_EQ(shift, 0); |
| 259 | opcode = (thumbForm) ? kThumbNeg : kThumb2NegRR; |
| 260 | break; |
| 261 | case kOpOr: |
| 262 | opcode = (thumbForm) ? kThumbOrr : kThumb2OrrRRR; |
| 263 | break; |
| 264 | case kOpSbc: |
| 265 | opcode = (thumbForm) ? kThumbSbc : kThumb2SbcRRR; |
| 266 | break; |
| 267 | case kOpTst: |
| 268 | opcode = (thumbForm) ? kThumbTst : kThumb2TstRR; |
| 269 | break; |
| 270 | case kOpLsl: |
| 271 | DCHECK_EQ(shift, 0); |
| 272 | opcode = (thumbForm) ? kThumbLslRR : kThumb2LslRRR; |
| 273 | break; |
| 274 | case kOpLsr: |
| 275 | DCHECK_EQ(shift, 0); |
| 276 | opcode = (thumbForm) ? kThumbLsrRR : kThumb2LsrRRR; |
| 277 | break; |
| 278 | case kOpAsr: |
| 279 | DCHECK_EQ(shift, 0); |
| 280 | opcode = (thumbForm) ? kThumbAsrRR : kThumb2AsrRRR; |
| 281 | break; |
| 282 | case kOpRor: |
| 283 | DCHECK_EQ(shift, 0); |
| 284 | opcode = (thumbForm) ? kThumbRorRR : kThumb2RorRRR; |
| 285 | break; |
| 286 | case kOpAdd: |
| 287 | opcode = (thumbForm) ? kThumbAddRRR : kThumb2AddRRR; |
| 288 | break; |
| 289 | case kOpSub: |
| 290 | opcode = (thumbForm) ? kThumbSubRRR : kThumb2SubRRR; |
| 291 | break; |
| 292 | case kOp2Byte: |
| 293 | DCHECK_EQ(shift, 0); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 294 | return NewLIR4(cUnit, kThumb2Sbfx, rDestSrc1, rSrc2, 0, 8); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 295 | case kOp2Short: |
| 296 | DCHECK_EQ(shift, 0); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 297 | return NewLIR4(cUnit, kThumb2Sbfx, rDestSrc1, rSrc2, 0, 16); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 298 | case kOp2Char: |
| 299 | DCHECK_EQ(shift, 0); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 300 | return NewLIR4(cUnit, kThumb2Ubfx, rDestSrc1, rSrc2, 0, 16); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 301 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 302 | LOG(FATAL) << "Bad opcode: " << op; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 303 | break; |
| 304 | } |
| 305 | DCHECK_GE(static_cast<int>(opcode), 0); |
| 306 | if (EncodingMap[opcode].flags & IS_BINARY_OP) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 307 | return NewLIR2(cUnit, opcode, rDestSrc1, rSrc2); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 308 | else if (EncodingMap[opcode].flags & IS_TERTIARY_OP) { |
| 309 | if (EncodingMap[opcode].fieldLoc[2].kind == kFmtShift) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 310 | return NewLIR3(cUnit, opcode, rDestSrc1, rSrc2, shift); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 311 | else |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 312 | return NewLIR3(cUnit, opcode, rDestSrc1, rDestSrc1, rSrc2); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 313 | } else if (EncodingMap[opcode].flags & IS_QUAD_OP) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 314 | return NewLIR4(cUnit, opcode, rDestSrc1, rDestSrc1, rSrc2, shift); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 315 | else { |
| 316 | LOG(FATAL) << "Unexpected encoding operand count"; |
| 317 | return NULL; |
| 318 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 319 | } |
| 320 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 321 | LIR* OpRegReg(CompilationUnit* cUnit, OpKind op, int rDestSrc1, int rSrc2) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 322 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 323 | return OpRegRegShift(cUnit, op, rDestSrc1, rSrc2, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 324 | } |
| 325 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 326 | LIR* OpRegRegRegShift(CompilationUnit* cUnit, OpKind op, int rDest, int rSrc1, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 327 | int rSrc2, int shift) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 328 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 329 | ArmOpcode opcode = kThumbBkpt; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 330 | bool thumbForm = (shift == 0) && ARM_LOWREG(rDest) && ARM_LOWREG(rSrc1) && |
| 331 | ARM_LOWREG(rSrc2); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 332 | switch (op) { |
| 333 | case kOpAdd: |
| 334 | opcode = (thumbForm) ? kThumbAddRRR : kThumb2AddRRR; |
| 335 | break; |
| 336 | case kOpSub: |
| 337 | opcode = (thumbForm) ? kThumbSubRRR : kThumb2SubRRR; |
| 338 | break; |
| 339 | case kOpRsub: |
| 340 | opcode = kThumb2RsubRRR; |
| 341 | break; |
| 342 | case kOpAdc: |
| 343 | opcode = kThumb2AdcRRR; |
| 344 | break; |
| 345 | case kOpAnd: |
| 346 | opcode = kThumb2AndRRR; |
| 347 | break; |
| 348 | case kOpBic: |
| 349 | opcode = kThumb2BicRRR; |
| 350 | break; |
| 351 | case kOpXor: |
| 352 | opcode = kThumb2EorRRR; |
| 353 | break; |
| 354 | case kOpMul: |
| 355 | DCHECK_EQ(shift, 0); |
| 356 | opcode = kThumb2MulRRR; |
| 357 | break; |
| 358 | case kOpOr: |
| 359 | opcode = kThumb2OrrRRR; |
| 360 | break; |
| 361 | case kOpSbc: |
| 362 | opcode = kThumb2SbcRRR; |
| 363 | break; |
| 364 | case kOpLsl: |
| 365 | DCHECK_EQ(shift, 0); |
| 366 | opcode = kThumb2LslRRR; |
| 367 | break; |
| 368 | case kOpLsr: |
| 369 | DCHECK_EQ(shift, 0); |
| 370 | opcode = kThumb2LsrRRR; |
| 371 | break; |
| 372 | case kOpAsr: |
| 373 | DCHECK_EQ(shift, 0); |
| 374 | opcode = kThumb2AsrRRR; |
| 375 | break; |
| 376 | case kOpRor: |
| 377 | DCHECK_EQ(shift, 0); |
| 378 | opcode = kThumb2RorRRR; |
| 379 | break; |
| 380 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 381 | LOG(FATAL) << "Bad opcode: " << op; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 382 | break; |
| 383 | } |
| 384 | DCHECK_GE(static_cast<int>(opcode), 0); |
| 385 | if (EncodingMap[opcode].flags & IS_QUAD_OP) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 386 | return NewLIR4(cUnit, opcode, rDest, rSrc1, rSrc2, shift); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 387 | else { |
| 388 | DCHECK(EncodingMap[opcode].flags & IS_TERTIARY_OP); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 389 | return NewLIR3(cUnit, opcode, rDest, rSrc1, rSrc2); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 390 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 391 | } |
| 392 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 393 | LIR* OpRegRegReg(CompilationUnit* cUnit, OpKind op, int rDest, int rSrc1, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 394 | int rSrc2) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 395 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 396 | return OpRegRegRegShift(cUnit, op, rDest, rSrc1, rSrc2, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 397 | } |
| 398 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 399 | LIR* OpRegRegImm(CompilationUnit* cUnit, OpKind op, int rDest, int rSrc1, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 400 | int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 401 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 402 | LIR* res; |
| 403 | bool neg = (value < 0); |
| 404 | int absValue = (neg) ? -value : value; |
| 405 | ArmOpcode opcode = kThumbBkpt; |
| 406 | ArmOpcode altOpcode = kThumbBkpt; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 407 | bool allLowRegs = (ARM_LOWREG(rDest) && ARM_LOWREG(rSrc1)); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 408 | int modImm = ModifiedImmediate(value); |
| 409 | int modImmNeg = ModifiedImmediate(-value); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 410 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 411 | switch (op) { |
| 412 | case kOpLsl: |
| 413 | if (allLowRegs) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 414 | return NewLIR3(cUnit, kThumbLslRRI5, rDest, rSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 415 | else |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 416 | return NewLIR3(cUnit, kThumb2LslRRI5, rDest, rSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 417 | case kOpLsr: |
| 418 | if (allLowRegs) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 419 | return NewLIR3(cUnit, kThumbLsrRRI5, rDest, rSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 420 | else |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 421 | return NewLIR3(cUnit, kThumb2LsrRRI5, rDest, rSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 422 | case kOpAsr: |
| 423 | if (allLowRegs) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 424 | return NewLIR3(cUnit, kThumbAsrRRI5, rDest, rSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 425 | else |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 426 | return NewLIR3(cUnit, kThumb2AsrRRI5, rDest, rSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 427 | case kOpRor: |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 428 | return NewLIR3(cUnit, kThumb2RorRRI5, rDest, rSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 429 | case kOpAdd: |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 430 | if (ARM_LOWREG(rDest) && (rSrc1 == r13sp) && |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 431 | (value <= 1020) && ((value & 0x3)==0)) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 432 | return NewLIR3(cUnit, kThumbAddSpRel, rDest, rSrc1, value >> 2); |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 433 | } else if (ARM_LOWREG(rDest) && (rSrc1 == r15pc) && |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 434 | (value <= 1020) && ((value & 0x3)==0)) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 435 | return NewLIR3(cUnit, kThumbAddPcRel, rDest, rSrc1, value >> 2); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 436 | } |
| 437 | // Note: intentional fallthrough |
| 438 | case kOpSub: |
| 439 | if (allLowRegs && ((absValue & 0x7) == absValue)) { |
| 440 | if (op == kOpAdd) |
| 441 | opcode = (neg) ? kThumbSubRRI3 : kThumbAddRRI3; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 442 | else |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 443 | opcode = (neg) ? kThumbAddRRI3 : kThumbSubRRI3; |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 444 | return NewLIR3(cUnit, opcode, rDest, rSrc1, absValue); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 445 | } else if ((absValue & 0xff) == absValue) { |
| 446 | if (op == kOpAdd) |
| 447 | opcode = (neg) ? kThumb2SubRRI12 : kThumb2AddRRI12; |
| 448 | else |
| 449 | opcode = (neg) ? kThumb2AddRRI12 : kThumb2SubRRI12; |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 450 | return NewLIR3(cUnit, opcode, rDest, rSrc1, absValue); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 451 | } |
| 452 | if (modImmNeg >= 0) { |
| 453 | op = (op == kOpAdd) ? kOpSub : kOpAdd; |
| 454 | modImm = modImmNeg; |
| 455 | } |
| 456 | if (op == kOpSub) { |
| 457 | opcode = kThumb2SubRRI8; |
| 458 | altOpcode = kThumb2SubRRR; |
| 459 | } else { |
| 460 | opcode = kThumb2AddRRI8; |
| 461 | altOpcode = kThumb2AddRRR; |
| 462 | } |
| 463 | break; |
| 464 | case kOpAdc: |
| 465 | opcode = kThumb2AdcRRI8; |
| 466 | altOpcode = kThumb2AdcRRR; |
| 467 | break; |
| 468 | case kOpSbc: |
| 469 | opcode = kThumb2SbcRRI8; |
| 470 | altOpcode = kThumb2SbcRRR; |
| 471 | break; |
| 472 | case kOpOr: |
| 473 | opcode = kThumb2OrrRRI8; |
| 474 | altOpcode = kThumb2OrrRRR; |
| 475 | break; |
| 476 | case kOpAnd: |
| 477 | opcode = kThumb2AndRRI8; |
| 478 | altOpcode = kThumb2AndRRR; |
| 479 | break; |
| 480 | case kOpXor: |
| 481 | opcode = kThumb2EorRRI8; |
| 482 | altOpcode = kThumb2EorRRR; |
| 483 | break; |
| 484 | case kOpMul: |
| 485 | //TUNING: power of 2, shift & add |
| 486 | modImm = -1; |
| 487 | altOpcode = kThumb2MulRRR; |
| 488 | break; |
| 489 | case kOpCmp: { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 490 | int modImm = ModifiedImmediate(value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 491 | LIR* res; |
| 492 | if (modImm >= 0) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 493 | res = NewLIR2(cUnit, kThumb2CmpRI8, rSrc1, modImm); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 494 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 495 | int rTmp = AllocTemp(cUnit); |
| 496 | res = LoadConstant(cUnit, rTmp, value); |
| 497 | OpRegReg(cUnit, kOpCmp, rSrc1, rTmp); |
| 498 | FreeTemp(cUnit, rTmp); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 499 | } |
| 500 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 501 | } |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 502 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 503 | LOG(FATAL) << "Bad opcode: " << op; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | if (modImm >= 0) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 507 | return NewLIR3(cUnit, opcode, rDest, rSrc1, modImm); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 508 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 509 | int rScratch = AllocTemp(cUnit); |
| 510 | LoadConstant(cUnit, rScratch, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 511 | if (EncodingMap[altOpcode].flags & IS_QUAD_OP) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 512 | res = NewLIR4(cUnit, altOpcode, rDest, rSrc1, rScratch, 0); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 513 | else |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 514 | res = NewLIR3(cUnit, altOpcode, rDest, rSrc1, rScratch); |
| 515 | FreeTemp(cUnit, rScratch); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 516 | return res; |
| 517 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 518 | } |
| 519 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 520 | /* Handle Thumb-only variants here - otherwise punt to OpRegRegImm */ |
| 521 | LIR* OpRegImm(CompilationUnit* cUnit, OpKind op, int rDestSrc1, int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 522 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 523 | bool neg = (value < 0); |
| 524 | int absValue = (neg) ? -value : value; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 525 | bool shortForm = (((absValue & 0xff) == absValue) && ARM_LOWREG(rDestSrc1)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 526 | ArmOpcode opcode = kThumbBkpt; |
| 527 | switch (op) { |
| 528 | case kOpAdd: |
| 529 | if ( !neg && (rDestSrc1 == r13sp) && (value <= 508)) { /* sp */ |
| 530 | DCHECK_EQ((value & 0x3), 0); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 531 | return NewLIR1(cUnit, kThumbAddSpI7, value >> 2); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 532 | } else if (shortForm) { |
| 533 | opcode = (neg) ? kThumbSubRI8 : kThumbAddRI8; |
| 534 | } |
| 535 | break; |
| 536 | case kOpSub: |
| 537 | if (!neg && (rDestSrc1 == r13sp) && (value <= 508)) { /* sp */ |
| 538 | DCHECK_EQ((value & 0x3), 0); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 539 | return NewLIR1(cUnit, kThumbSubSpI7, value >> 2); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 540 | } else if (shortForm) { |
| 541 | opcode = (neg) ? kThumbAddRI8 : kThumbSubRI8; |
| 542 | } |
| 543 | break; |
| 544 | case kOpCmp: |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 545 | if (ARM_LOWREG(rDestSrc1) && shortForm) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 546 | opcode = (shortForm) ? kThumbCmpRI8 : kThumbCmpRR; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 547 | else if (ARM_LOWREG(rDestSrc1)) |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 548 | opcode = kThumbCmpRR; |
| 549 | else { |
| 550 | shortForm = false; |
| 551 | opcode = kThumbCmpHL; |
| 552 | } |
| 553 | break; |
| 554 | default: |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 555 | /* Punt to OpRegRegImm - if bad case catch it there */ |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 556 | shortForm = false; |
| 557 | break; |
| 558 | } |
| 559 | if (shortForm) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 560 | return NewLIR2(cUnit, opcode, rDestSrc1, absValue); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 561 | else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 562 | return OpRegRegImm(cUnit, op, rDestSrc1, rDestSrc1, value); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 563 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | /* |
| 567 | * Determine whether value can be encoded as a Thumb2 floating point |
| 568 | * immediate. If not, return -1. If so return encoded 8-bit value. |
| 569 | */ |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 570 | int EncodeImmDoubleHigh(int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 571 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 572 | int res; |
| 573 | int bitA = (value & 0x80000000) >> 31; |
| 574 | int notBitB = (value & 0x40000000) >> 30; |
| 575 | int bitB = (value & 0x20000000) >> 29; |
| 576 | int bSmear = (value & 0x3fc00000) >> 22; |
| 577 | int slice = (value & 0x003f0000) >> 16; |
| 578 | int zeroes = (value & 0x0000ffff); |
| 579 | if (zeroes != 0) |
| 580 | return -1; |
| 581 | if (bitB) { |
| 582 | if ((notBitB != 0) || (bSmear != 0xff)) |
| 583 | return -1; |
| 584 | } else { |
| 585 | if ((notBitB != 1) || (bSmear != 0x0)) |
| 586 | return -1; |
| 587 | } |
| 588 | res = (bitA << 7) | (bitB << 6) | slice; |
| 589 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 590 | } |
| 591 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 592 | int EncodeImmDouble(int valLo, int valHi) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 593 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 594 | int res = -1; |
| 595 | if (valLo == 0) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 596 | res = EncodeImmDoubleHigh(valHi); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 597 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 598 | } |
| 599 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 600 | LIR* LoadConstantValueWide(CompilationUnit* cUnit, int rDestLo, int rDestHi, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 601 | int valLo, int valHi) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 602 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 603 | int encodedImm = EncodeImmDouble(valLo, valHi); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 604 | LIR* res; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 605 | if (ARM_FPREG(rDestLo)) { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 606 | if (encodedImm >= 0) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 607 | res = NewLIR2(cUnit, kThumb2Vmovd_IMM8, S2d(rDestLo, rDestHi), |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 608 | encodedImm); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 609 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 610 | LIR* dataTarget = ScanLiteralPoolWide(cUnit->literalList, valLo, valHi); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 611 | if (dataTarget == NULL) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 612 | dataTarget = AddWideData(cUnit, &cUnit->literalList, valLo, valHi); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 613 | } |
| 614 | LIR* loadPcRel = |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 615 | RawLIR(cUnit, cUnit->currentDalvikOffset, kThumb2Vldrd, |
| 616 | S2d(rDestLo, rDestHi), r15pc, 0, 0, 0, dataTarget); |
| 617 | SetMemRefType(loadPcRel, true, kLiteral); |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 618 | loadPcRel->aliasInfo = reinterpret_cast<uintptr_t>(dataTarget); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 619 | AppendLIR(cUnit, loadPcRel); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 620 | res = loadPcRel; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 621 | } |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 622 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 623 | res = LoadConstantNoClobber(cUnit, rDestLo, valLo); |
| 624 | LoadConstantNoClobber(cUnit, rDestHi, valHi); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 625 | } |
| 626 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 627 | } |
| 628 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 629 | int EncodeShift(int code, int amount) { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 630 | return ((amount & 0x1f) << 2) | code; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 631 | } |
| 632 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 633 | LIR* LoadBaseIndexed(CompilationUnit* cUnit, int rBase, int rIndex, int rDest, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 634 | int scale, OpSize size) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 635 | { |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 636 | bool allLowRegs = ARM_LOWREG(rBase) && ARM_LOWREG(rIndex) && ARM_LOWREG(rDest); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 637 | LIR* load; |
| 638 | ArmOpcode opcode = kThumbBkpt; |
| 639 | bool thumbForm = (allLowRegs && (scale == 0)); |
| 640 | int regPtr; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 641 | |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 642 | if (ARM_FPREG(rDest)) { |
| 643 | if (ARM_SINGLEREG(rDest)) { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 644 | DCHECK((size == kWord) || (size == kSingle)); |
| 645 | opcode = kThumb2Vldrs; |
| 646 | size = kSingle; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 647 | } else { |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 648 | DCHECK(ARM_DOUBLEREG(rDest)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 649 | DCHECK((size == kLong) || (size == kDouble)); |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 650 | DCHECK_EQ((rDest & 0x1), 0); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 651 | opcode = kThumb2Vldrd; |
| 652 | size = kDouble; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 653 | } |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 654 | } else { |
| 655 | if (size == kSingle) |
| 656 | size = kWord; |
| 657 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 658 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 659 | switch (size) { |
| 660 | case kDouble: // fall-through |
| 661 | case kSingle: |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 662 | regPtr = AllocTemp(cUnit); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 663 | if (scale) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 664 | NewLIR4(cUnit, kThumb2AddRRR, regPtr, rBase, rIndex, |
| 665 | EncodeShift(kArmLsl, scale)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 666 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 667 | OpRegRegReg(cUnit, kOpAdd, regPtr, rBase, rIndex); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 668 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 669 | load = NewLIR3(cUnit, opcode, rDest, regPtr, 0); |
| 670 | FreeTemp(cUnit, regPtr); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 671 | return load; |
| 672 | case kWord: |
| 673 | opcode = (thumbForm) ? kThumbLdrRRR : kThumb2LdrRRR; |
| 674 | break; |
| 675 | case kUnsignedHalf: |
| 676 | opcode = (thumbForm) ? kThumbLdrhRRR : kThumb2LdrhRRR; |
| 677 | break; |
| 678 | case kSignedHalf: |
| 679 | opcode = (thumbForm) ? kThumbLdrshRRR : kThumb2LdrshRRR; |
| 680 | break; |
| 681 | case kUnsignedByte: |
| 682 | opcode = (thumbForm) ? kThumbLdrbRRR : kThumb2LdrbRRR; |
| 683 | break; |
| 684 | case kSignedByte: |
| 685 | opcode = (thumbForm) ? kThumbLdrsbRRR : kThumb2LdrsbRRR; |
| 686 | break; |
| 687 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 688 | LOG(FATAL) << "Bad size: " << size; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 689 | } |
| 690 | if (thumbForm) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 691 | load = NewLIR3(cUnit, opcode, rDest, rBase, rIndex); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 692 | else |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 693 | load = NewLIR4(cUnit, opcode, rDest, rBase, rIndex, scale); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 694 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 695 | return load; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 696 | } |
| 697 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 698 | LIR* StoreBaseIndexed(CompilationUnit* cUnit, int rBase, int rIndex, int rSrc, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 699 | int scale, OpSize size) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 700 | { |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 701 | bool allLowRegs = ARM_LOWREG(rBase) && ARM_LOWREG(rIndex) && ARM_LOWREG(rSrc); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 702 | LIR* store; |
| 703 | ArmOpcode opcode = kThumbBkpt; |
| 704 | bool thumbForm = (allLowRegs && (scale == 0)); |
| 705 | int regPtr; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 706 | |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 707 | if (ARM_FPREG(rSrc)) { |
| 708 | if (ARM_SINGLEREG(rSrc)) { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 709 | DCHECK((size == kWord) || (size == kSingle)); |
| 710 | opcode = kThumb2Vstrs; |
| 711 | size = kSingle; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 712 | } else { |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 713 | DCHECK(ARM_DOUBLEREG(rSrc)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 714 | DCHECK((size == kLong) || (size == kDouble)); |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 715 | DCHECK_EQ((rSrc & 0x1), 0); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 716 | opcode = kThumb2Vstrd; |
| 717 | size = kDouble; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 718 | } |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 719 | } else { |
| 720 | if (size == kSingle) |
| 721 | size = kWord; |
| 722 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 723 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 724 | switch (size) { |
| 725 | case kDouble: // fall-through |
| 726 | case kSingle: |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 727 | regPtr = AllocTemp(cUnit); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 728 | if (scale) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 729 | NewLIR4(cUnit, kThumb2AddRRR, regPtr, rBase, rIndex, |
| 730 | EncodeShift(kArmLsl, scale)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 731 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 732 | OpRegRegReg(cUnit, kOpAdd, regPtr, rBase, rIndex); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 733 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 734 | store = NewLIR3(cUnit, opcode, rSrc, regPtr, 0); |
| 735 | FreeTemp(cUnit, regPtr); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 736 | return store; |
| 737 | case kWord: |
| 738 | opcode = (thumbForm) ? kThumbStrRRR : kThumb2StrRRR; |
| 739 | break; |
| 740 | case kUnsignedHalf: |
| 741 | case kSignedHalf: |
| 742 | opcode = (thumbForm) ? kThumbStrhRRR : kThumb2StrhRRR; |
| 743 | break; |
| 744 | case kUnsignedByte: |
| 745 | case kSignedByte: |
| 746 | opcode = (thumbForm) ? kThumbStrbRRR : kThumb2StrbRRR; |
| 747 | break; |
| 748 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 749 | LOG(FATAL) << "Bad size: " << size; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 750 | } |
| 751 | if (thumbForm) |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 752 | store = NewLIR3(cUnit, opcode, rSrc, rBase, rIndex); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 753 | else |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 754 | store = NewLIR4(cUnit, opcode, rSrc, rBase, rIndex, scale); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 755 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 756 | return store; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 757 | } |
| 758 | |
| 759 | /* |
| 760 | * Load value from base + displacement. Optionally perform null check |
| 761 | * on base (which must have an associated sReg and MIR). If not |
| 762 | * performing null check, incoming MIR can be null. |
| 763 | */ |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 764 | LIR* LoadBaseDispBody(CompilationUnit* cUnit, int rBase, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 765 | int displacement, int rDest, int rDestHi, OpSize size, |
| 766 | int sReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 767 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 768 | LIR* res; |
| 769 | LIR* load; |
| 770 | ArmOpcode opcode = kThumbBkpt; |
| 771 | bool shortForm = false; |
| 772 | bool thumb2Form = (displacement < 4092 && displacement >= 0); |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 773 | bool allLowRegs = (ARM_LOWREG(rBase) && ARM_LOWREG(rDest)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 774 | int encodedDisp = displacement; |
| 775 | bool is64bit = false; |
| 776 | switch (size) { |
| 777 | case kDouble: |
| 778 | case kLong: |
| 779 | is64bit = true; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 780 | if (ARM_FPREG(rDest)) { |
| 781 | if (ARM_SINGLEREG(rDest)) { |
| 782 | DCHECK(ARM_FPREG(rDestHi)); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 783 | rDest = S2d(rDest, rDestHi); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 784 | } |
| 785 | opcode = kThumb2Vldrd; |
| 786 | if (displacement <= 1020) { |
| 787 | shortForm = true; |
| 788 | encodedDisp >>= 2; |
| 789 | } |
| 790 | break; |
| 791 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 792 | res = LoadBaseDispBody(cUnit, rBase, displacement, rDest, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 793 | -1, kWord, sReg); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 794 | LoadBaseDispBody(cUnit, rBase, displacement + 4, rDestHi, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 795 | -1, kWord, INVALID_SREG); |
| 796 | return res; |
| 797 | } |
| 798 | case kSingle: |
| 799 | case kWord: |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 800 | if (ARM_FPREG(rDest)) { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 801 | opcode = kThumb2Vldrs; |
| 802 | if (displacement <= 1020) { |
| 803 | shortForm = true; |
| 804 | encodedDisp >>= 2; |
| 805 | } |
| 806 | break; |
| 807 | } |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 808 | if (ARM_LOWREG(rDest) && (rBase == r15pc) && |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 809 | (displacement <= 1020) && (displacement >= 0)) { |
| 810 | shortForm = true; |
| 811 | encodedDisp >>= 2; |
| 812 | opcode = kThumbLdrPcRel; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 813 | } else if (ARM_LOWREG(rDest) && (rBase == r13sp) && |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 814 | (displacement <= 1020) && (displacement >= 0)) { |
| 815 | shortForm = true; |
| 816 | encodedDisp >>= 2; |
| 817 | opcode = kThumbLdrSpRel; |
| 818 | } else if (allLowRegs && displacement < 128 && displacement >= 0) { |
| 819 | DCHECK_EQ((displacement & 0x3), 0); |
| 820 | shortForm = true; |
| 821 | encodedDisp >>= 2; |
| 822 | opcode = kThumbLdrRRI5; |
| 823 | } else if (thumb2Form) { |
| 824 | shortForm = true; |
| 825 | opcode = kThumb2LdrRRI12; |
| 826 | } |
| 827 | break; |
| 828 | case kUnsignedHalf: |
| 829 | if (allLowRegs && displacement < 64 && displacement >= 0) { |
| 830 | DCHECK_EQ((displacement & 0x1), 0); |
| 831 | shortForm = true; |
| 832 | encodedDisp >>= 1; |
| 833 | opcode = kThumbLdrhRRI5; |
| 834 | } else if (displacement < 4092 && displacement >= 0) { |
| 835 | shortForm = true; |
| 836 | opcode = kThumb2LdrhRRI12; |
| 837 | } |
| 838 | break; |
| 839 | case kSignedHalf: |
| 840 | if (thumb2Form) { |
| 841 | shortForm = true; |
| 842 | opcode = kThumb2LdrshRRI12; |
| 843 | } |
| 844 | break; |
| 845 | case kUnsignedByte: |
| 846 | if (allLowRegs && displacement < 32 && displacement >= 0) { |
| 847 | shortForm = true; |
| 848 | opcode = kThumbLdrbRRI5; |
| 849 | } else if (thumb2Form) { |
| 850 | shortForm = true; |
| 851 | opcode = kThumb2LdrbRRI12; |
| 852 | } |
| 853 | break; |
| 854 | case kSignedByte: |
| 855 | if (thumb2Form) { |
| 856 | shortForm = true; |
| 857 | opcode = kThumb2LdrsbRRI12; |
| 858 | } |
| 859 | break; |
| 860 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 861 | LOG(FATAL) << "Bad size: " << size; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 862 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 863 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 864 | if (shortForm) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 865 | load = res = NewLIR3(cUnit, opcode, rDest, rBase, encodedDisp); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 866 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 867 | int regOffset = AllocTemp(cUnit); |
| 868 | res = LoadConstant(cUnit, regOffset, encodedDisp); |
| 869 | load = LoadBaseIndexed(cUnit, rBase, regOffset, rDest, 0, size); |
| 870 | FreeTemp(cUnit, regOffset); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 871 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 872 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 873 | // TODO: in future may need to differentiate Dalvik accesses w/ spills |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 874 | if (rBase == rARM_SP) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 875 | AnnotateDalvikRegAccess(load, displacement >> 2, true /* isLoad */, is64bit); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 876 | } |
| 877 | return load; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 878 | } |
| 879 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 880 | LIR* LoadBaseDisp(CompilationUnit* cUnit, int rBase, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 881 | int displacement, int rDest, OpSize size, int sReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 882 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 883 | return LoadBaseDispBody(cUnit, rBase, displacement, rDest, -1, size, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 884 | sReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 885 | } |
| 886 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 887 | LIR* LoadBaseDispWide(CompilationUnit* cUnit, int rBase, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 888 | int displacement, int rDestLo, int rDestHi, int sReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 889 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 890 | return LoadBaseDispBody(cUnit, rBase, displacement, rDestLo, rDestHi, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 891 | kLong, sReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 892 | } |
| 893 | |
| 894 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 895 | LIR* StoreBaseDispBody(CompilationUnit* cUnit, int rBase, int displacement, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 896 | int rSrc, int rSrcHi, OpSize size) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 897 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 898 | LIR* res, *store; |
| 899 | ArmOpcode opcode = kThumbBkpt; |
| 900 | bool shortForm = false; |
| 901 | bool thumb2Form = (displacement < 4092 && displacement >= 0); |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 902 | bool allLowRegs = (ARM_LOWREG(rBase) && ARM_LOWREG(rSrc)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 903 | int encodedDisp = displacement; |
| 904 | bool is64bit = false; |
| 905 | switch (size) { |
| 906 | case kLong: |
| 907 | case kDouble: |
| 908 | is64bit = true; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 909 | if (!ARM_FPREG(rSrc)) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 910 | res = StoreBaseDispBody(cUnit, rBase, displacement, rSrc, -1, kWord); |
| 911 | StoreBaseDispBody(cUnit, rBase, displacement + 4, rSrcHi, -1, kWord); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 912 | return res; |
| 913 | } |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 914 | if (ARM_SINGLEREG(rSrc)) { |
| 915 | DCHECK(ARM_FPREG(rSrcHi)); |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 916 | rSrc = S2d(rSrc, rSrcHi); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 917 | } |
| 918 | opcode = kThumb2Vstrd; |
| 919 | if (displacement <= 1020) { |
| 920 | shortForm = true; |
| 921 | encodedDisp >>= 2; |
| 922 | } |
| 923 | break; |
| 924 | case kSingle: |
| 925 | case kWord: |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 926 | if (ARM_FPREG(rSrc)) { |
| 927 | DCHECK(ARM_SINGLEREG(rSrc)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 928 | opcode = kThumb2Vstrs; |
| 929 | if (displacement <= 1020) { |
| 930 | shortForm = true; |
| 931 | encodedDisp >>= 2; |
| 932 | } |
| 933 | break; |
| 934 | } |
| 935 | if (allLowRegs && displacement < 128 && displacement >= 0) { |
| 936 | DCHECK_EQ((displacement & 0x3), 0); |
| 937 | shortForm = true; |
| 938 | encodedDisp >>= 2; |
| 939 | opcode = kThumbStrRRI5; |
| 940 | } else if (thumb2Form) { |
| 941 | shortForm = true; |
| 942 | opcode = kThumb2StrRRI12; |
| 943 | } |
| 944 | break; |
| 945 | case kUnsignedHalf: |
| 946 | case kSignedHalf: |
| 947 | if (allLowRegs && displacement < 64 && displacement >= 0) { |
| 948 | DCHECK_EQ((displacement & 0x1), 0); |
| 949 | shortForm = true; |
| 950 | encodedDisp >>= 1; |
| 951 | opcode = kThumbStrhRRI5; |
| 952 | } else if (thumb2Form) { |
| 953 | shortForm = true; |
| 954 | opcode = kThumb2StrhRRI12; |
| 955 | } |
| 956 | break; |
| 957 | case kUnsignedByte: |
| 958 | case kSignedByte: |
| 959 | if (allLowRegs && displacement < 32 && displacement >= 0) { |
| 960 | shortForm = true; |
| 961 | opcode = kThumbStrbRRI5; |
| 962 | } else if (thumb2Form) { |
| 963 | shortForm = true; |
| 964 | opcode = kThumb2StrbRRI12; |
| 965 | } |
| 966 | break; |
| 967 | default: |
buzbee | cbd6d44 | 2012-11-17 14:11:25 -0800 | [diff] [blame] | 968 | LOG(FATAL) << "Bad size: " << size; |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 969 | } |
| 970 | if (shortForm) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 971 | store = res = NewLIR3(cUnit, opcode, rSrc, rBase, encodedDisp); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 972 | } else { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 973 | int rScratch = AllocTemp(cUnit); |
| 974 | res = LoadConstant(cUnit, rScratch, encodedDisp); |
| 975 | store = StoreBaseIndexed(cUnit, rBase, rScratch, rSrc, 0, size); |
| 976 | FreeTemp(cUnit, rScratch); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 977 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 978 | |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 979 | // TODO: In future, may need to differentiate Dalvik & spill accesses |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 980 | if (rBase == rARM_SP) { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 981 | AnnotateDalvikRegAccess(store, displacement >> 2, false /* isLoad */, |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 982 | is64bit); |
| 983 | } |
| 984 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 985 | } |
| 986 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 987 | LIR* StoreBaseDisp(CompilationUnit* cUnit, int rBase, int displacement, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 988 | int rSrc, OpSize size) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 989 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 990 | return StoreBaseDispBody(cUnit, rBase, displacement, rSrc, -1, size); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 991 | } |
| 992 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 993 | LIR* StoreBaseDispWide(CompilationUnit* cUnit, int rBase, int displacement, |
buzbee | 31a4a6f | 2012-02-28 15:36:15 -0800 | [diff] [blame] | 994 | int rSrcLo, int rSrcHi) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 995 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 996 | return StoreBaseDispBody(cUnit, rBase, displacement, rSrcLo, rSrcHi, kLong); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 997 | } |
| 998 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 999 | void LoadPair(CompilationUnit* cUnit, int base, int lowReg, int highReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1000 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1001 | LoadBaseDispWide(cUnit, base, 0, lowReg, highReg, INVALID_SREG); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1002 | } |
| 1003 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1004 | LIR* FpRegCopy(CompilationUnit* cUnit, int rDest, int rSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1005 | { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 1006 | int opcode; |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 1007 | DCHECK_EQ(ARM_DOUBLEREG(rDest), ARM_DOUBLEREG(rSrc)); |
| 1008 | if (ARM_DOUBLEREG(rDest)) { |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 1009 | opcode = kThumb2Vmovd; |
| 1010 | } else { |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 1011 | if (ARM_SINGLEREG(rDest)) { |
| 1012 | opcode = ARM_SINGLEREG(rSrc) ? kThumb2Vmovs : kThumb2Fmsr; |
buzbee | a2ebdd7 | 2012-03-04 14:57:06 -0800 | [diff] [blame] | 1013 | } else { |
buzbee | f0504cd | 2012-11-13 16:31:10 -0800 | [diff] [blame] | 1014 | DCHECK(ARM_SINGLEREG(rSrc)); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 1015 | opcode = kThumb2Fmrs; |
buzbee | a2ebdd7 | 2012-03-04 14:57:06 -0800 | [diff] [blame] | 1016 | } |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 1017 | } |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1018 | LIR* res = RawLIR(cUnit, cUnit->currentDalvikOffset, opcode, rDest, rSrc); |
Bill Buzbee | a114add | 2012-05-03 15:00:40 -0700 | [diff] [blame] | 1019 | if (!(cUnit->disableOpt & (1 << kSafeOptimizations)) && rDest == rSrc) { |
| 1020 | res->flags.isNop = true; |
| 1021 | } |
| 1022 | return res; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1023 | } |
| 1024 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1025 | LIR* OpThreadMem(CompilationUnit* cUnit, OpKind op, int threadOffset) |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1026 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1027 | LOG(FATAL) << "Unexpected use of OpThreadMem for Arm"; |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1028 | return NULL; |
| 1029 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1030 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1031 | LIR* OpMem(CompilationUnit* cUnit, OpKind op, int rBase, int disp) |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1032 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1033 | LOG(FATAL) << "Unexpected use of OpMem for Arm"; |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1034 | return NULL; |
| 1035 | } |
| 1036 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1037 | LIR* StoreBaseIndexedDisp(CompilationUnit *cUnit, |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1038 | int rBase, int rIndex, int scale, int displacement, |
| 1039 | int rSrc, int rSrcHi, |
| 1040 | OpSize size, int sReg) |
| 1041 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1042 | LOG(FATAL) << "Unexpected use of StoreBaseIndexedDisp for Arm"; |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1043 | return NULL; |
| 1044 | } |
| 1045 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1046 | LIR* OpRegMem(CompilationUnit *cUnit, OpKind op, int rDest, int rBase, |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1047 | int offset) |
| 1048 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1049 | LOG(FATAL) << "Unexpected use of OpRegMem for Arm"; |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1050 | return NULL; |
| 1051 | } |
| 1052 | |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1053 | LIR* LoadBaseIndexedDisp(CompilationUnit *cUnit, |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1054 | int rBase, int rIndex, int scale, int displacement, |
| 1055 | int rDest, int rDestHi, |
| 1056 | OpSize size, int sReg) |
| 1057 | { |
buzbee | 52a77fc | 2012-11-20 19:50:46 -0800 | [diff] [blame^] | 1058 | LOG(FATAL) << "Unexpected use of LoadBaseIndexedDisp for Arm"; |
buzbee | b046e16 | 2012-10-30 15:48:42 -0700 | [diff] [blame] | 1059 | return NULL; |
| 1060 | } |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 1061 | |
| 1062 | } // namespace art |