Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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 | |
| 17 | #include "assembler_thumb2.h" |
| 18 | |
| 19 | #include "base/stl_util.h" |
Andreas Gampe | 7cffc3b | 2015-10-19 21:31:53 -0700 | [diff] [blame] | 20 | #include "base/stringprintf.h" |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 21 | #include "utils/assembler_test.h" |
| 22 | |
| 23 | namespace art { |
| 24 | |
| 25 | class AssemblerThumb2Test : public AssemblerTest<arm::Thumb2Assembler, |
Andreas Gampe | 851df20 | 2014-11-12 14:05:46 -0800 | [diff] [blame] | 26 | arm::Register, arm::SRegister, |
| 27 | uint32_t> { |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 28 | protected: |
| 29 | std::string GetArchitectureString() OVERRIDE { |
| 30 | return "arm"; |
| 31 | } |
| 32 | |
| 33 | std::string GetAssemblerParameters() OVERRIDE { |
Andreas Gampe | 513ea0c | 2015-02-02 13:17:52 -0800 | [diff] [blame] | 34 | return " -march=armv7-a -mcpu=cortex-a15 -mfpu=neon -mthumb"; |
| 35 | } |
| 36 | |
| 37 | const char* GetAssemblyHeader() OVERRIDE { |
| 38 | return kThumb2AssemblyHeader; |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | std::string GetDisassembleParameters() OVERRIDE { |
Andreas Gampe | 513ea0c | 2015-02-02 13:17:52 -0800 | [diff] [blame] | 42 | return " -D -bbinary -marm --disassembler-options=force-thumb --no-show-raw-insn"; |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | void SetUpHelpers() OVERRIDE { |
| 46 | if (registers_.size() == 0) { |
| 47 | registers_.insert(end(registers_), |
| 48 | { // NOLINT(whitespace/braces) |
| 49 | new arm::Register(arm::R0), |
| 50 | new arm::Register(arm::R1), |
| 51 | new arm::Register(arm::R2), |
| 52 | new arm::Register(arm::R3), |
| 53 | new arm::Register(arm::R4), |
| 54 | new arm::Register(arm::R5), |
| 55 | new arm::Register(arm::R6), |
| 56 | new arm::Register(arm::R7), |
| 57 | new arm::Register(arm::R8), |
| 58 | new arm::Register(arm::R9), |
| 59 | new arm::Register(arm::R10), |
| 60 | new arm::Register(arm::R11), |
| 61 | new arm::Register(arm::R12), |
| 62 | new arm::Register(arm::R13), |
| 63 | new arm::Register(arm::R14), |
| 64 | new arm::Register(arm::R15) |
| 65 | }); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | void TearDown() OVERRIDE { |
| 70 | AssemblerTest::TearDown(); |
| 71 | STLDeleteElements(®isters_); |
| 72 | } |
| 73 | |
| 74 | std::vector<arm::Register*> GetRegisters() OVERRIDE { |
| 75 | return registers_; |
| 76 | } |
| 77 | |
| 78 | uint32_t CreateImmediate(int64_t imm_value) OVERRIDE { |
| 79 | return imm_value; |
| 80 | } |
| 81 | |
Vladimir Marko | cf93a5c | 2015-06-16 11:33:24 +0000 | [diff] [blame] | 82 | std::string RepeatInsn(size_t count, const std::string& insn) { |
| 83 | std::string result; |
| 84 | for (; count != 0u; --count) { |
| 85 | result += insn; |
| 86 | } |
| 87 | return result; |
| 88 | } |
| 89 | |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 90 | private: |
| 91 | std::vector<arm::Register*> registers_; |
Andreas Gampe | 513ea0c | 2015-02-02 13:17:52 -0800 | [diff] [blame] | 92 | |
| 93 | static constexpr const char* kThumb2AssemblyHeader = ".syntax unified\n.thumb\n"; |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 94 | }; |
| 95 | |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 96 | TEST_F(AssemblerThumb2Test, Toolchain) { |
| 97 | EXPECT_TRUE(CheckTools()); |
| 98 | } |
| 99 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 100 | #define __ GetAssembler()-> |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 101 | |
| 102 | TEST_F(AssemblerThumb2Test, Sbfx) { |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 103 | __ sbfx(arm::R0, arm::R1, 0, 1); |
| 104 | __ sbfx(arm::R0, arm::R1, 0, 8); |
| 105 | __ sbfx(arm::R0, arm::R1, 0, 16); |
| 106 | __ sbfx(arm::R0, arm::R1, 0, 32); |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 107 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 108 | __ sbfx(arm::R0, arm::R1, 8, 1); |
| 109 | __ sbfx(arm::R0, arm::R1, 8, 8); |
| 110 | __ sbfx(arm::R0, arm::R1, 8, 16); |
| 111 | __ sbfx(arm::R0, arm::R1, 8, 24); |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 112 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 113 | __ sbfx(arm::R0, arm::R1, 16, 1); |
| 114 | __ sbfx(arm::R0, arm::R1, 16, 8); |
| 115 | __ sbfx(arm::R0, arm::R1, 16, 16); |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 116 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 117 | __ sbfx(arm::R0, arm::R1, 31, 1); |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 118 | |
| 119 | const char* expected = |
| 120 | "sbfx r0, r1, #0, #1\n" |
| 121 | "sbfx r0, r1, #0, #8\n" |
| 122 | "sbfx r0, r1, #0, #16\n" |
| 123 | "sbfx r0, r1, #0, #32\n" |
| 124 | |
| 125 | "sbfx r0, r1, #8, #1\n" |
| 126 | "sbfx r0, r1, #8, #8\n" |
| 127 | "sbfx r0, r1, #8, #16\n" |
| 128 | "sbfx r0, r1, #8, #24\n" |
| 129 | |
| 130 | "sbfx r0, r1, #16, #1\n" |
| 131 | "sbfx r0, r1, #16, #8\n" |
| 132 | "sbfx r0, r1, #16, #16\n" |
| 133 | |
| 134 | "sbfx r0, r1, #31, #1\n"; |
| 135 | DriverStr(expected, "sbfx"); |
| 136 | } |
| 137 | |
Roland Levillain | 981e454 | 2014-11-14 11:47:14 +0000 | [diff] [blame] | 138 | TEST_F(AssemblerThumb2Test, Ubfx) { |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 139 | __ ubfx(arm::R0, arm::R1, 0, 1); |
| 140 | __ ubfx(arm::R0, arm::R1, 0, 8); |
| 141 | __ ubfx(arm::R0, arm::R1, 0, 16); |
| 142 | __ ubfx(arm::R0, arm::R1, 0, 32); |
Roland Levillain | 981e454 | 2014-11-14 11:47:14 +0000 | [diff] [blame] | 143 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 144 | __ ubfx(arm::R0, arm::R1, 8, 1); |
| 145 | __ ubfx(arm::R0, arm::R1, 8, 8); |
| 146 | __ ubfx(arm::R0, arm::R1, 8, 16); |
| 147 | __ ubfx(arm::R0, arm::R1, 8, 24); |
Roland Levillain | 981e454 | 2014-11-14 11:47:14 +0000 | [diff] [blame] | 148 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 149 | __ ubfx(arm::R0, arm::R1, 16, 1); |
| 150 | __ ubfx(arm::R0, arm::R1, 16, 8); |
| 151 | __ ubfx(arm::R0, arm::R1, 16, 16); |
Roland Levillain | 981e454 | 2014-11-14 11:47:14 +0000 | [diff] [blame] | 152 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 153 | __ ubfx(arm::R0, arm::R1, 31, 1); |
Roland Levillain | 981e454 | 2014-11-14 11:47:14 +0000 | [diff] [blame] | 154 | |
| 155 | const char* expected = |
| 156 | "ubfx r0, r1, #0, #1\n" |
| 157 | "ubfx r0, r1, #0, #8\n" |
| 158 | "ubfx r0, r1, #0, #16\n" |
| 159 | "ubfx r0, r1, #0, #32\n" |
| 160 | |
| 161 | "ubfx r0, r1, #8, #1\n" |
| 162 | "ubfx r0, r1, #8, #8\n" |
| 163 | "ubfx r0, r1, #8, #16\n" |
| 164 | "ubfx r0, r1, #8, #24\n" |
| 165 | |
| 166 | "ubfx r0, r1, #16, #1\n" |
| 167 | "ubfx r0, r1, #16, #8\n" |
| 168 | "ubfx r0, r1, #16, #16\n" |
| 169 | |
| 170 | "ubfx r0, r1, #31, #1\n"; |
| 171 | DriverStr(expected, "ubfx"); |
| 172 | } |
| 173 | |
Calin Juravle | ddb7df2 | 2014-11-25 20:56:51 +0000 | [diff] [blame] | 174 | TEST_F(AssemblerThumb2Test, Vmstat) { |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 175 | __ vmstat(); |
Calin Juravle | ddb7df2 | 2014-11-25 20:56:51 +0000 | [diff] [blame] | 176 | |
| 177 | const char* expected = "vmrs APSR_nzcv, FPSCR\n"; |
| 178 | |
| 179 | DriverStr(expected, "vmrs"); |
| 180 | } |
| 181 | |
Calin Juravle | 52c4896 | 2014-12-16 17:02:57 +0000 | [diff] [blame] | 182 | TEST_F(AssemblerThumb2Test, ldrexd) { |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 183 | __ ldrexd(arm::R0, arm::R1, arm::R0); |
| 184 | __ ldrexd(arm::R0, arm::R1, arm::R1); |
| 185 | __ ldrexd(arm::R0, arm::R1, arm::R2); |
| 186 | __ ldrexd(arm::R5, arm::R3, arm::R7); |
Calin Juravle | 52c4896 | 2014-12-16 17:02:57 +0000 | [diff] [blame] | 187 | |
| 188 | const char* expected = |
| 189 | "ldrexd r0, r1, [r0]\n" |
| 190 | "ldrexd r0, r1, [r1]\n" |
| 191 | "ldrexd r0, r1, [r2]\n" |
| 192 | "ldrexd r5, r3, [r7]\n"; |
| 193 | DriverStr(expected, "ldrexd"); |
| 194 | } |
| 195 | |
| 196 | TEST_F(AssemblerThumb2Test, strexd) { |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 197 | __ strexd(arm::R9, arm::R0, arm::R1, arm::R0); |
| 198 | __ strexd(arm::R9, arm::R0, arm::R1, arm::R1); |
| 199 | __ strexd(arm::R9, arm::R0, arm::R1, arm::R2); |
| 200 | __ strexd(arm::R9, arm::R5, arm::R3, arm::R7); |
Calin Juravle | 52c4896 | 2014-12-16 17:02:57 +0000 | [diff] [blame] | 201 | |
| 202 | const char* expected = |
| 203 | "strexd r9, r0, r1, [r0]\n" |
| 204 | "strexd r9, r0, r1, [r1]\n" |
| 205 | "strexd r9, r0, r1, [r2]\n" |
| 206 | "strexd r9, r5, r3, [r7]\n"; |
| 207 | DriverStr(expected, "strexd"); |
| 208 | } |
| 209 | |
Andreas Gampe | 2bcf9bf | 2015-01-29 09:56:07 -0800 | [diff] [blame] | 210 | TEST_F(AssemblerThumb2Test, LdrdStrd) { |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 211 | __ ldrd(arm::R0, arm::Address(arm::R2, 8)); |
| 212 | __ ldrd(arm::R0, arm::Address(arm::R12)); |
| 213 | __ strd(arm::R0, arm::Address(arm::R2, 8)); |
Andreas Gampe | 2bcf9bf | 2015-01-29 09:56:07 -0800 | [diff] [blame] | 214 | |
| 215 | const char* expected = |
| 216 | "ldrd r0, r1, [r2, #8]\n" |
| 217 | "ldrd r0, r1, [r12]\n" |
| 218 | "strd r0, r1, [r2, #8]\n"; |
| 219 | DriverStr(expected, "ldrdstrd"); |
| 220 | } |
| 221 | |
Andreas Gampe | 513ea0c | 2015-02-02 13:17:52 -0800 | [diff] [blame] | 222 | TEST_F(AssemblerThumb2Test, eor) { |
Andreas Gampe | 513ea0c | 2015-02-02 13:17:52 -0800 | [diff] [blame] | 223 | __ eor(arm::R1, arm::R1, arm::ShifterOperand(arm::R0)); |
| 224 | __ eor(arm::R1, arm::R0, arm::ShifterOperand(arm::R1)); |
| 225 | __ eor(arm::R1, arm::R8, arm::ShifterOperand(arm::R0)); |
| 226 | __ eor(arm::R8, arm::R1, arm::ShifterOperand(arm::R0)); |
| 227 | __ eor(arm::R1, arm::R0, arm::ShifterOperand(arm::R8)); |
| 228 | |
| 229 | const char* expected = |
| 230 | "eors r1, r0\n" |
| 231 | "eor r1, r0, r1\n" |
| 232 | "eor r1, r8, r0\n" |
| 233 | "eor r8, r1, r0\n" |
| 234 | "eor r1, r0, r8\n"; |
| 235 | DriverStr(expected, "abs"); |
| 236 | } |
| 237 | |
Guillaume "Vermeille" Sanchez | dc62c48 | 2015-03-11 14:30:31 +0000 | [diff] [blame] | 238 | TEST_F(AssemblerThumb2Test, sub) { |
| 239 | __ subs(arm::R1, arm::R0, arm::ShifterOperand(42)); |
| 240 | __ sub(arm::R1, arm::R0, arm::ShifterOperand(42)); |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 241 | __ subs(arm::R1, arm::R0, arm::ShifterOperand(arm::R2, arm::ASR, 31)); |
| 242 | __ sub(arm::R1, arm::R0, arm::ShifterOperand(arm::R2, arm::ASR, 31)); |
Guillaume "Vermeille" Sanchez | dc62c48 | 2015-03-11 14:30:31 +0000 | [diff] [blame] | 243 | |
| 244 | const char* expected = |
| 245 | "subs r1, r0, #42\n" |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 246 | "sub.w r1, r0, #42\n" |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 247 | "subs r1, r0, r2, asr #31\n" |
| 248 | "sub r1, r0, r2, asr #31\n"; |
Guillaume "Vermeille" Sanchez | dc62c48 | 2015-03-11 14:30:31 +0000 | [diff] [blame] | 249 | DriverStr(expected, "sub"); |
| 250 | } |
| 251 | |
| 252 | TEST_F(AssemblerThumb2Test, add) { |
| 253 | __ adds(arm::R1, arm::R0, arm::ShifterOperand(42)); |
| 254 | __ add(arm::R1, arm::R0, arm::ShifterOperand(42)); |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 255 | __ adds(arm::R1, arm::R0, arm::ShifterOperand(arm::R2, arm::ASR, 31)); |
| 256 | __ add(arm::R1, arm::R0, arm::ShifterOperand(arm::R2, arm::ASR, 31)); |
Guillaume "Vermeille" Sanchez | dc62c48 | 2015-03-11 14:30:31 +0000 | [diff] [blame] | 257 | |
| 258 | const char* expected = |
| 259 | "adds r1, r0, #42\n" |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 260 | "add.w r1, r0, #42\n" |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 261 | "adds r1, r0, r2, asr #31\n" |
| 262 | "add r1, r0, r2, asr #31\n"; |
Guillaume "Vermeille" Sanchez | dc62c48 | 2015-03-11 14:30:31 +0000 | [diff] [blame] | 263 | DriverStr(expected, "add"); |
| 264 | } |
| 265 | |
Zheng Xu | c666710 | 2015-05-15 16:08:45 +0800 | [diff] [blame] | 266 | TEST_F(AssemblerThumb2Test, umull) { |
| 267 | __ umull(arm::R0, arm::R1, arm::R2, arm::R3); |
| 268 | |
| 269 | const char* expected = |
| 270 | "umull r0, r1, r2, r3\n"; |
| 271 | DriverStr(expected, "umull"); |
| 272 | } |
| 273 | |
| 274 | TEST_F(AssemblerThumb2Test, smull) { |
| 275 | __ smull(arm::R0, arm::R1, arm::R2, arm::R3); |
| 276 | |
| 277 | const char* expected = |
| 278 | "smull r0, r1, r2, r3\n"; |
| 279 | DriverStr(expected, "smull"); |
| 280 | } |
| 281 | |
Roland Levillain | c5a5ac6 | 2015-04-02 15:49:24 +0100 | [diff] [blame] | 282 | TEST_F(AssemblerThumb2Test, StoreWordToThumbOffset) { |
| 283 | arm::StoreOperandType type = arm::kStoreWord; |
| 284 | int32_t offset = 4092; |
| 285 | ASSERT_TRUE(arm::Address::CanHoldStoreOffsetThumb(type, offset)); |
| 286 | |
| 287 | __ StoreToOffset(type, arm::R0, arm::SP, offset); |
| 288 | __ StoreToOffset(type, arm::IP, arm::SP, offset); |
| 289 | __ StoreToOffset(type, arm::IP, arm::R5, offset); |
| 290 | |
| 291 | const char* expected = |
| 292 | "str r0, [sp, #4092]\n" |
| 293 | "str ip, [sp, #4092]\n" |
| 294 | "str ip, [r5, #4092]\n"; |
| 295 | DriverStr(expected, "StoreWordToThumbOffset"); |
| 296 | } |
| 297 | |
| 298 | TEST_F(AssemblerThumb2Test, StoreWordToNonThumbOffset) { |
| 299 | arm::StoreOperandType type = arm::kStoreWord; |
| 300 | int32_t offset = 4096; |
| 301 | ASSERT_FALSE(arm::Address::CanHoldStoreOffsetThumb(type, offset)); |
| 302 | |
| 303 | __ StoreToOffset(type, arm::R0, arm::SP, offset); |
| 304 | __ StoreToOffset(type, arm::IP, arm::SP, offset); |
| 305 | __ StoreToOffset(type, arm::IP, arm::R5, offset); |
| 306 | |
| 307 | const char* expected = |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 308 | "add.w ip, sp, #4096\n" // AddConstant(ip, sp, 4096) |
Roland Levillain | c5a5ac6 | 2015-04-02 15:49:24 +0100 | [diff] [blame] | 309 | "str r0, [ip, #0]\n" |
| 310 | |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 311 | "str r5, [sp, #-4]!\n" // Push(r5) |
| 312 | "add.w r5, sp, #4096\n" // AddConstant(r5, 4100 & ~0xfff) |
| 313 | "str ip, [r5, #4]\n" // StoreToOffset(type, ip, r5, 4100 & 0xfff) |
| 314 | "ldr r5, [sp], #4\n" // Pop(r5) |
Roland Levillain | c5a5ac6 | 2015-04-02 15:49:24 +0100 | [diff] [blame] | 315 | |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 316 | "str r6, [sp, #-4]!\n" // Push(r6) |
| 317 | "add.w r6, r5, #4096\n" // AddConstant(r6, r5, 4096 & ~0xfff) |
| 318 | "str ip, [r6, #0]\n" // StoreToOffset(type, ip, r6, 4096 & 0xfff) |
| 319 | "ldr r6, [sp], #4\n"; // Pop(r6) |
Roland Levillain | c5a5ac6 | 2015-04-02 15:49:24 +0100 | [diff] [blame] | 320 | DriverStr(expected, "StoreWordToNonThumbOffset"); |
| 321 | } |
| 322 | |
Roland Levillain | 4af147e | 2015-04-07 13:54:49 +0100 | [diff] [blame] | 323 | TEST_F(AssemblerThumb2Test, StoreWordPairToThumbOffset) { |
| 324 | arm::StoreOperandType type = arm::kStoreWordPair; |
| 325 | int32_t offset = 1020; |
| 326 | ASSERT_TRUE(arm::Address::CanHoldStoreOffsetThumb(type, offset)); |
| 327 | |
| 328 | __ StoreToOffset(type, arm::R0, arm::SP, offset); |
| 329 | // We cannot use IP (i.e. R12) as first source register, as it would |
| 330 | // force us to use SP (i.e. R13) as second source register, which |
| 331 | // would have an "unpredictable" effect according to the ARMv7 |
| 332 | // specification (the T1 encoding describes the result as |
| 333 | // UNPREDICTABLE when of the source registers is R13). |
| 334 | // |
| 335 | // So we use (R11, IP) (e.g. (R11, R12)) as source registers in the |
| 336 | // following instructions. |
| 337 | __ StoreToOffset(type, arm::R11, arm::SP, offset); |
| 338 | __ StoreToOffset(type, arm::R11, arm::R5, offset); |
| 339 | |
| 340 | const char* expected = |
| 341 | "strd r0, r1, [sp, #1020]\n" |
| 342 | "strd r11, ip, [sp, #1020]\n" |
| 343 | "strd r11, ip, [r5, #1020]\n"; |
| 344 | DriverStr(expected, "StoreWordPairToThumbOffset"); |
| 345 | } |
| 346 | |
| 347 | TEST_F(AssemblerThumb2Test, StoreWordPairToNonThumbOffset) { |
| 348 | arm::StoreOperandType type = arm::kStoreWordPair; |
| 349 | int32_t offset = 1024; |
| 350 | ASSERT_FALSE(arm::Address::CanHoldStoreOffsetThumb(type, offset)); |
| 351 | |
| 352 | __ StoreToOffset(type, arm::R0, arm::SP, offset); |
| 353 | // Same comment as in AssemblerThumb2Test.StoreWordPairToThumbOffset |
| 354 | // regarding the use of (R11, IP) (e.g. (R11, R12)) as source |
| 355 | // registers in the following instructions. |
| 356 | __ StoreToOffset(type, arm::R11, arm::SP, offset); |
| 357 | __ StoreToOffset(type, arm::R11, arm::R5, offset); |
| 358 | |
| 359 | const char* expected = |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 360 | "add.w ip, sp, #1024\n" // AddConstant(ip, sp, 1024) |
Roland Levillain | 4af147e | 2015-04-07 13:54:49 +0100 | [diff] [blame] | 361 | "strd r0, r1, [ip, #0]\n" |
| 362 | |
| 363 | "str r5, [sp, #-4]!\n" // Push(r5) |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 364 | "add.w r5, sp, #1024\n" // AddConstant(r5, sp, (1024 + kRegisterSize) & ~0x3fc) |
| 365 | "strd r11, ip, [r5, #4]\n" // StoreToOffset(type, r11, sp, (1024 + kRegisterSize) & 0x3fc) |
Roland Levillain | 4af147e | 2015-04-07 13:54:49 +0100 | [diff] [blame] | 366 | "ldr r5, [sp], #4\n" // Pop(r5) |
| 367 | |
| 368 | "str r6, [sp, #-4]!\n" // Push(r6) |
Vladimir Marko | 6fd0ffe | 2015-11-19 21:13:52 +0000 | [diff] [blame] | 369 | "add.w r6, r5, #1024\n" // AddConstant(r6, r5, 1024 & ~0x3fc) |
| 370 | "strd r11, ip, [r6, #0]\n" // StoreToOffset(type, r11, r6, 1024 & 0x3fc) |
Roland Levillain | 4af147e | 2015-04-07 13:54:49 +0100 | [diff] [blame] | 371 | "ldr r6, [sp], #4\n"; // Pop(r6) |
| 372 | DriverStr(expected, "StoreWordPairToNonThumbOffset"); |
| 373 | } |
| 374 | |
Vladimir Marko | f2bb043 | 2016-04-25 12:43:50 +0000 | [diff] [blame] | 375 | TEST_F(AssemblerThumb2Test, DistantBackBranch) { |
| 376 | Label start, end; |
| 377 | __ Bind(&start); |
| 378 | constexpr size_t kLdrR0R0Count1 = 256; |
| 379 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 380 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 381 | } |
| 382 | __ b(&end, arm::EQ); |
| 383 | __ b(&start, arm::LT); |
| 384 | constexpr size_t kLdrR0R0Count2 = 256; |
| 385 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 386 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 387 | } |
| 388 | __ Bind(&end); |
| 389 | |
| 390 | std::string expected = |
| 391 | "0:\n" + |
| 392 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 393 | "beq 1f\n" |
| 394 | "blt 0b\n" + |
| 395 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 396 | "1:\n"; |
| 397 | DriverStr(expected, "DistantBackBranch"); |
| 398 | } |
| 399 | |
Vladimir Marko | cf93a5c | 2015-06-16 11:33:24 +0000 | [diff] [blame] | 400 | TEST_F(AssemblerThumb2Test, TwoCbzMaxOffset) { |
| 401 | Label label0, label1, label2; |
| 402 | __ cbz(arm::R0, &label1); |
| 403 | constexpr size_t kLdrR0R0Count1 = 63; |
| 404 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 405 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 406 | } |
| 407 | __ Bind(&label0); |
| 408 | __ cbz(arm::R0, &label2); |
| 409 | __ Bind(&label1); |
| 410 | constexpr size_t kLdrR0R0Count2 = 64; |
| 411 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 412 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 413 | } |
| 414 | __ Bind(&label2); |
| 415 | |
| 416 | std::string expected = |
| 417 | "cbz r0, 1f\n" + // cbz r0, label1 |
| 418 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 419 | "0:\n" |
| 420 | "cbz r0, 2f\n" // cbz r0, label2 |
| 421 | "1:\n" + |
| 422 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 423 | "2:\n"; |
| 424 | DriverStr(expected, "TwoCbzMaxOffset"); |
| 425 | |
| 426 | EXPECT_EQ(static_cast<uint32_t>(label0.Position()) + 0u, |
| 427 | __ GetAdjustedPosition(label0.Position())); |
| 428 | EXPECT_EQ(static_cast<uint32_t>(label1.Position()) + 0u, |
| 429 | __ GetAdjustedPosition(label1.Position())); |
| 430 | EXPECT_EQ(static_cast<uint32_t>(label2.Position()) + 0u, |
| 431 | __ GetAdjustedPosition(label2.Position())); |
| 432 | } |
| 433 | |
| 434 | TEST_F(AssemblerThumb2Test, TwoCbzBeyondMaxOffset) { |
| 435 | Label label0, label1, label2; |
| 436 | __ cbz(arm::R0, &label1); |
| 437 | constexpr size_t kLdrR0R0Count1 = 63; |
| 438 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 439 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 440 | } |
| 441 | __ Bind(&label0); |
| 442 | __ cbz(arm::R0, &label2); |
| 443 | __ Bind(&label1); |
| 444 | constexpr size_t kLdrR0R0Count2 = 65; |
| 445 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 446 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 447 | } |
| 448 | __ Bind(&label2); |
| 449 | |
| 450 | std::string expected = |
| 451 | "cmp r0, #0\n" // cbz r0, label1 |
| 452 | "beq.n 1f\n" + |
| 453 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 454 | "0:\n" |
| 455 | "cmp r0, #0\n" // cbz r0, label2 |
| 456 | "beq.n 2f\n" |
| 457 | "1:\n" + |
| 458 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 459 | "2:\n"; |
| 460 | DriverStr(expected, "TwoCbzBeyondMaxOffset"); |
| 461 | |
| 462 | EXPECT_EQ(static_cast<uint32_t>(label0.Position()) + 2u, |
| 463 | __ GetAdjustedPosition(label0.Position())); |
| 464 | EXPECT_EQ(static_cast<uint32_t>(label1.Position()) + 4u, |
| 465 | __ GetAdjustedPosition(label1.Position())); |
| 466 | EXPECT_EQ(static_cast<uint32_t>(label2.Position()) + 4u, |
| 467 | __ GetAdjustedPosition(label2.Position())); |
| 468 | } |
| 469 | |
| 470 | TEST_F(AssemblerThumb2Test, TwoCbzSecondAtMaxB16Offset) { |
| 471 | Label label0, label1, label2; |
| 472 | __ cbz(arm::R0, &label1); |
| 473 | constexpr size_t kLdrR0R0Count1 = 62; |
| 474 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 475 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 476 | } |
| 477 | __ Bind(&label0); |
| 478 | __ cbz(arm::R0, &label2); |
| 479 | __ Bind(&label1); |
| 480 | constexpr size_t kLdrR0R0Count2 = 128; |
| 481 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 482 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 483 | } |
| 484 | __ Bind(&label2); |
| 485 | |
| 486 | std::string expected = |
| 487 | "cbz r0, 1f\n" + // cbz r0, label1 |
| 488 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 489 | "0:\n" |
| 490 | "cmp r0, #0\n" // cbz r0, label2 |
| 491 | "beq.n 2f\n" |
| 492 | "1:\n" + |
| 493 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 494 | "2:\n"; |
| 495 | DriverStr(expected, "TwoCbzSecondAtMaxB16Offset"); |
| 496 | |
| 497 | EXPECT_EQ(static_cast<uint32_t>(label0.Position()) + 0u, |
| 498 | __ GetAdjustedPosition(label0.Position())); |
| 499 | EXPECT_EQ(static_cast<uint32_t>(label1.Position()) + 2u, |
| 500 | __ GetAdjustedPosition(label1.Position())); |
| 501 | EXPECT_EQ(static_cast<uint32_t>(label2.Position()) + 2u, |
| 502 | __ GetAdjustedPosition(label2.Position())); |
| 503 | } |
| 504 | |
| 505 | TEST_F(AssemblerThumb2Test, TwoCbzSecondBeyondMaxB16Offset) { |
| 506 | Label label0, label1, label2; |
| 507 | __ cbz(arm::R0, &label1); |
| 508 | constexpr size_t kLdrR0R0Count1 = 62; |
| 509 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 510 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 511 | } |
| 512 | __ Bind(&label0); |
| 513 | __ cbz(arm::R0, &label2); |
| 514 | __ Bind(&label1); |
| 515 | constexpr size_t kLdrR0R0Count2 = 129; |
| 516 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 517 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 518 | } |
| 519 | __ Bind(&label2); |
| 520 | |
| 521 | std::string expected = |
| 522 | "cmp r0, #0\n" // cbz r0, label1 |
| 523 | "beq.n 1f\n" + |
| 524 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 525 | "0:\n" |
| 526 | "cmp r0, #0\n" // cbz r0, label2 |
| 527 | "beq.w 2f\n" |
| 528 | "1:\n" + |
| 529 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 530 | "2:\n"; |
| 531 | DriverStr(expected, "TwoCbzSecondBeyondMaxB16Offset"); |
| 532 | |
| 533 | EXPECT_EQ(static_cast<uint32_t>(label0.Position()) + 2u, |
| 534 | __ GetAdjustedPosition(label0.Position())); |
| 535 | EXPECT_EQ(static_cast<uint32_t>(label1.Position()) + 6u, |
| 536 | __ GetAdjustedPosition(label1.Position())); |
| 537 | EXPECT_EQ(static_cast<uint32_t>(label2.Position()) + 6u, |
| 538 | __ GetAdjustedPosition(label2.Position())); |
| 539 | } |
| 540 | |
| 541 | TEST_F(AssemblerThumb2Test, TwoCbzFirstAtMaxB16Offset) { |
| 542 | Label label0, label1, label2; |
| 543 | __ cbz(arm::R0, &label1); |
| 544 | constexpr size_t kLdrR0R0Count1 = 127; |
| 545 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 546 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 547 | } |
| 548 | __ Bind(&label0); |
| 549 | __ cbz(arm::R0, &label2); |
| 550 | __ Bind(&label1); |
| 551 | constexpr size_t kLdrR0R0Count2 = 64; |
| 552 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 553 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 554 | } |
| 555 | __ Bind(&label2); |
| 556 | |
| 557 | std::string expected = |
| 558 | "cmp r0, #0\n" // cbz r0, label1 |
| 559 | "beq.n 1f\n" + |
| 560 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 561 | "0:\n" |
| 562 | "cbz r0, 2f\n" // cbz r0, label2 |
| 563 | "1:\n" + |
| 564 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 565 | "2:\n"; |
| 566 | DriverStr(expected, "TwoCbzFirstAtMaxB16Offset"); |
| 567 | |
| 568 | EXPECT_EQ(static_cast<uint32_t>(label0.Position()) + 2u, |
| 569 | __ GetAdjustedPosition(label0.Position())); |
| 570 | EXPECT_EQ(static_cast<uint32_t>(label1.Position()) + 2u, |
| 571 | __ GetAdjustedPosition(label1.Position())); |
| 572 | EXPECT_EQ(static_cast<uint32_t>(label2.Position()) + 2u, |
| 573 | __ GetAdjustedPosition(label2.Position())); |
| 574 | } |
| 575 | |
| 576 | TEST_F(AssemblerThumb2Test, TwoCbzFirstBeyondMaxB16Offset) { |
| 577 | Label label0, label1, label2; |
| 578 | __ cbz(arm::R0, &label1); |
| 579 | constexpr size_t kLdrR0R0Count1 = 127; |
| 580 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 581 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 582 | } |
| 583 | __ Bind(&label0); |
| 584 | __ cbz(arm::R0, &label2); |
| 585 | __ Bind(&label1); |
| 586 | constexpr size_t kLdrR0R0Count2 = 65; |
| 587 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 588 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 589 | } |
| 590 | __ Bind(&label2); |
| 591 | |
| 592 | std::string expected = |
| 593 | "cmp r0, #0\n" // cbz r0, label1 |
| 594 | "beq.w 1f\n" + |
| 595 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 596 | "0:\n" |
| 597 | "cmp r0, #0\n" // cbz r0, label2 |
| 598 | "beq.n 2f\n" |
| 599 | "1:\n" + |
| 600 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 601 | "2:\n"; |
| 602 | DriverStr(expected, "TwoCbzFirstBeyondMaxB16Offset"); |
| 603 | |
| 604 | EXPECT_EQ(static_cast<uint32_t>(label0.Position()) + 4u, |
| 605 | __ GetAdjustedPosition(label0.Position())); |
| 606 | EXPECT_EQ(static_cast<uint32_t>(label1.Position()) + 6u, |
| 607 | __ GetAdjustedPosition(label1.Position())); |
| 608 | EXPECT_EQ(static_cast<uint32_t>(label2.Position()) + 6u, |
| 609 | __ GetAdjustedPosition(label2.Position())); |
| 610 | } |
| 611 | |
| 612 | TEST_F(AssemblerThumb2Test, LoadLiteralMax1KiB) { |
| 613 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 614 | __ LoadLiteral(arm::R0, literal); |
| 615 | Label label; |
| 616 | __ Bind(&label); |
| 617 | constexpr size_t kLdrR0R0Count = 511; |
| 618 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 619 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 620 | } |
| 621 | |
| 622 | std::string expected = |
| 623 | "1:\n" |
| 624 | "ldr.n r0, [pc, #((2f - 1b - 2) & ~2)]\n" + |
| 625 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 626 | ".align 2, 0\n" |
| 627 | "2:\n" |
| 628 | ".word 0x12345678\n"; |
| 629 | DriverStr(expected, "LoadLiteralMax1KiB"); |
| 630 | |
| 631 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 0u, |
| 632 | __ GetAdjustedPosition(label.Position())); |
| 633 | } |
| 634 | |
| 635 | TEST_F(AssemblerThumb2Test, LoadLiteralBeyondMax1KiB) { |
| 636 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 637 | __ LoadLiteral(arm::R0, literal); |
| 638 | Label label; |
| 639 | __ Bind(&label); |
| 640 | constexpr size_t kLdrR0R0Count = 512; |
| 641 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 642 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 643 | } |
| 644 | |
| 645 | std::string expected = |
| 646 | "1:\n" |
| 647 | "ldr.w r0, [pc, #((2f - 1b - 2) & ~2)]\n" + |
| 648 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 649 | ".align 2, 0\n" |
| 650 | "2:\n" |
| 651 | ".word 0x12345678\n"; |
| 652 | DriverStr(expected, "LoadLiteralBeyondMax1KiB"); |
| 653 | |
| 654 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 2u, |
| 655 | __ GetAdjustedPosition(label.Position())); |
| 656 | } |
| 657 | |
| 658 | TEST_F(AssemblerThumb2Test, LoadLiteralMax4KiB) { |
| 659 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 660 | __ LoadLiteral(arm::R1, literal); |
| 661 | Label label; |
| 662 | __ Bind(&label); |
| 663 | constexpr size_t kLdrR0R0Count = 2046; |
| 664 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 665 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 666 | } |
| 667 | |
| 668 | std::string expected = |
| 669 | "1:\n" |
| 670 | "ldr.w r1, [pc, #((2f - 1b - 2) & ~2)]\n" + |
| 671 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 672 | ".align 2, 0\n" |
| 673 | "2:\n" |
| 674 | ".word 0x12345678\n"; |
| 675 | DriverStr(expected, "LoadLiteralMax4KiB"); |
| 676 | |
| 677 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 2u, |
| 678 | __ GetAdjustedPosition(label.Position())); |
| 679 | } |
| 680 | |
| 681 | TEST_F(AssemblerThumb2Test, LoadLiteralBeyondMax4KiB) { |
| 682 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 683 | __ LoadLiteral(arm::R1, literal); |
| 684 | Label label; |
| 685 | __ Bind(&label); |
| 686 | constexpr size_t kLdrR0R0Count = 2047; |
| 687 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 688 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 689 | } |
| 690 | |
| 691 | std::string expected = |
| 692 | "movw r1, #4096\n" // "as" does not consider (2f - 1f - 4) a constant expression for movw. |
| 693 | "1:\n" |
| 694 | "add r1, pc\n" |
| 695 | "ldr r1, [r1, #0]\n" + |
| 696 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 697 | ".align 2, 0\n" |
| 698 | "2:\n" |
| 699 | ".word 0x12345678\n"; |
| 700 | DriverStr(expected, "LoadLiteralBeyondMax4KiB"); |
| 701 | |
| 702 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 6u, |
| 703 | __ GetAdjustedPosition(label.Position())); |
| 704 | } |
| 705 | |
| 706 | TEST_F(AssemblerThumb2Test, LoadLiteralMax64KiB) { |
| 707 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 708 | __ LoadLiteral(arm::R1, literal); |
| 709 | Label label; |
| 710 | __ Bind(&label); |
| 711 | constexpr size_t kLdrR0R0Count = (1u << 15) - 2u; |
| 712 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 713 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 714 | } |
| 715 | |
| 716 | std::string expected = |
| 717 | "movw r1, #0xfffc\n" // "as" does not consider (2f - 1f - 4) a constant expression for movw. |
| 718 | "1:\n" |
| 719 | "add r1, pc\n" |
| 720 | "ldr r1, [r1, #0]\n" + |
| 721 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 722 | ".align 2, 0\n" |
| 723 | "2:\n" |
| 724 | ".word 0x12345678\n"; |
| 725 | DriverStr(expected, "LoadLiteralMax64KiB"); |
| 726 | |
| 727 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 6u, |
| 728 | __ GetAdjustedPosition(label.Position())); |
| 729 | } |
| 730 | |
| 731 | TEST_F(AssemblerThumb2Test, LoadLiteralBeyondMax64KiB) { |
| 732 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 733 | __ LoadLiteral(arm::R1, literal); |
| 734 | Label label; |
| 735 | __ Bind(&label); |
| 736 | constexpr size_t kLdrR0R0Count = (1u << 15) - 1u; |
| 737 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 738 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 739 | } |
| 740 | |
| 741 | std::string expected = |
| 742 | "mov.w r1, #((2f - 1f - 4) & ~0xfff)\n" |
| 743 | "1:\n" |
| 744 | "add r1, pc\n" |
| 745 | "ldr r1, [r1, #((2f - 1b - 4) & 0xfff)]\n" + |
| 746 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 747 | ".align 2, 0\n" |
| 748 | "2:\n" |
| 749 | ".word 0x12345678\n"; |
| 750 | DriverStr(expected, "LoadLiteralBeyondMax64KiB"); |
| 751 | |
| 752 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 8u, |
| 753 | __ GetAdjustedPosition(label.Position())); |
| 754 | } |
| 755 | |
| 756 | TEST_F(AssemblerThumb2Test, LoadLiteralMax1MiB) { |
| 757 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 758 | __ LoadLiteral(arm::R1, literal); |
| 759 | Label label; |
| 760 | __ Bind(&label); |
| 761 | constexpr size_t kLdrR0R0Count = (1u << 19) - 3u; |
| 762 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 763 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 764 | } |
| 765 | |
| 766 | std::string expected = |
| 767 | "mov.w r1, #((2f - 1f - 4) & ~0xfff)\n" |
| 768 | "1:\n" |
| 769 | "add r1, pc\n" |
| 770 | "ldr r1, [r1, #((2f - 1b - 4) & 0xfff)]\n" + |
| 771 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 772 | ".align 2, 0\n" |
| 773 | "2:\n" |
| 774 | ".word 0x12345678\n"; |
| 775 | DriverStr(expected, "LoadLiteralMax1MiB"); |
| 776 | |
| 777 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 8u, |
| 778 | __ GetAdjustedPosition(label.Position())); |
| 779 | } |
| 780 | |
| 781 | TEST_F(AssemblerThumb2Test, LoadLiteralBeyondMax1MiB) { |
| 782 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 783 | __ LoadLiteral(arm::R1, literal); |
| 784 | Label label; |
| 785 | __ Bind(&label); |
| 786 | constexpr size_t kLdrR0R0Count = (1u << 19) - 2u; |
| 787 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 788 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 789 | } |
| 790 | |
| 791 | std::string expected = |
| 792 | // "as" does not consider ((2f - 1f - 4) & 0xffff) a constant expression for movw. |
| 793 | "movw r1, #(0x100000 & 0xffff)\n" |
| 794 | // "as" does not consider ((2f - 1f - 4) >> 16) a constant expression for movt. |
| 795 | "movt r1, #(0x100000 >> 16)\n" |
| 796 | "1:\n" |
| 797 | "add r1, pc\n" |
| 798 | "ldr.w r1, [r1, #0]\n" + |
| 799 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 800 | ".align 2, 0\n" |
| 801 | "2:\n" |
| 802 | ".word 0x12345678\n"; |
| 803 | DriverStr(expected, "LoadLiteralBeyondMax1MiB"); |
| 804 | |
| 805 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 12u, |
| 806 | __ GetAdjustedPosition(label.Position())); |
| 807 | } |
| 808 | |
| 809 | TEST_F(AssemblerThumb2Test, LoadLiteralFar) { |
| 810 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 811 | __ LoadLiteral(arm::R1, literal); |
| 812 | Label label; |
| 813 | __ Bind(&label); |
| 814 | constexpr size_t kLdrR0R0Count = (1u << 19) - 2u + 0x1234; |
| 815 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 816 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 817 | } |
| 818 | |
| 819 | std::string expected = |
| 820 | // "as" does not consider ((2f - 1f - 4) & 0xffff) a constant expression for movw. |
| 821 | "movw r1, #((0x100000 + 2 * 0x1234) & 0xffff)\n" |
| 822 | // "as" does not consider ((2f - 1f - 4) >> 16) a constant expression for movt. |
| 823 | "movt r1, #((0x100000 + 2 * 0x1234) >> 16)\n" |
| 824 | "1:\n" |
| 825 | "add r1, pc\n" |
| 826 | "ldr.w r1, [r1, #0]\n" + |
| 827 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 828 | ".align 2, 0\n" |
| 829 | "2:\n" |
| 830 | ".word 0x12345678\n"; |
| 831 | DriverStr(expected, "LoadLiteralFar"); |
| 832 | |
| 833 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 12u, |
| 834 | __ GetAdjustedPosition(label.Position())); |
| 835 | } |
| 836 | |
| 837 | TEST_F(AssemblerThumb2Test, LoadLiteralWideMax1KiB) { |
| 838 | arm::Literal* literal = __ NewLiteral<int64_t>(INT64_C(0x1234567887654321)); |
| 839 | __ LoadLiteral(arm::R1, arm::R3, literal); |
| 840 | Label label; |
| 841 | __ Bind(&label); |
| 842 | constexpr size_t kLdrR0R0Count = 510; |
| 843 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 844 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 845 | } |
| 846 | |
| 847 | std::string expected = |
| 848 | "1:\n" |
| 849 | "ldrd r1, r3, [pc, #((2f - 1b - 2) & ~2)]\n" + |
| 850 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 851 | ".align 2, 0\n" |
| 852 | "2:\n" |
| 853 | ".word 0x87654321\n" |
| 854 | ".word 0x12345678\n"; |
| 855 | DriverStr(expected, "LoadLiteralWideMax1KiB"); |
| 856 | |
| 857 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 0u, |
| 858 | __ GetAdjustedPosition(label.Position())); |
| 859 | } |
| 860 | |
| 861 | TEST_F(AssemblerThumb2Test, LoadLiteralWideBeyondMax1KiB) { |
| 862 | arm::Literal* literal = __ NewLiteral<int64_t>(INT64_C(0x1234567887654321)); |
| 863 | __ LoadLiteral(arm::R1, arm::R3, literal); |
| 864 | Label label; |
| 865 | __ Bind(&label); |
| 866 | constexpr size_t kLdrR0R0Count = 511; |
| 867 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 868 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 869 | } |
| 870 | |
| 871 | std::string expected = |
| 872 | "mov.w ip, #((2f - 1f - 4) & ~0x3ff)\n" |
| 873 | "1:\n" |
| 874 | "add ip, pc\n" |
| 875 | "ldrd r1, r3, [ip, #((2f - 1b - 4) & 0x3ff)]\n" + |
| 876 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 877 | ".align 2, 0\n" |
| 878 | "2:\n" |
| 879 | ".word 0x87654321\n" |
| 880 | ".word 0x12345678\n"; |
| 881 | DriverStr(expected, "LoadLiteralWideBeyondMax1KiB"); |
| 882 | |
| 883 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 6u, |
| 884 | __ GetAdjustedPosition(label.Position())); |
| 885 | } |
| 886 | |
| 887 | TEST_F(AssemblerThumb2Test, LoadLiteralSingleMax256KiB) { |
| 888 | // The literal size must match but the type doesn't, so use an int32_t rather than float. |
| 889 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 890 | __ LoadLiteral(arm::S3, literal); |
| 891 | Label label; |
| 892 | __ Bind(&label); |
| 893 | constexpr size_t kLdrR0R0Count = (1 << 17) - 3u; |
| 894 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 895 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 896 | } |
| 897 | |
| 898 | std::string expected = |
| 899 | "mov.w ip, #((2f - 1f - 4) & ~0x3ff)\n" |
| 900 | "1:\n" |
| 901 | "add ip, pc\n" |
| 902 | "vldr s3, [ip, #((2f - 1b - 4) & 0x3ff)]\n" + |
| 903 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 904 | ".align 2, 0\n" |
| 905 | "2:\n" |
| 906 | ".word 0x12345678\n"; |
| 907 | DriverStr(expected, "LoadLiteralSingleMax256KiB"); |
| 908 | |
| 909 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 6u, |
| 910 | __ GetAdjustedPosition(label.Position())); |
| 911 | } |
| 912 | |
| 913 | TEST_F(AssemblerThumb2Test, LoadLiteralDoubleBeyondMax256KiB) { |
| 914 | // The literal size must match but the type doesn't, so use an int64_t rather than double. |
| 915 | arm::Literal* literal = __ NewLiteral<int64_t>(INT64_C(0x1234567887654321)); |
| 916 | __ LoadLiteral(arm::D3, literal); |
| 917 | Label label; |
| 918 | __ Bind(&label); |
| 919 | constexpr size_t kLdrR0R0Count = (1 << 17) - 2u; |
| 920 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 921 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 922 | } |
| 923 | |
| 924 | std::string expected = |
| 925 | // "as" does not consider ((2f - 1f - 4) & 0xffff) a constant expression for movw. |
| 926 | "movw ip, #(0x40000 & 0xffff)\n" |
| 927 | // "as" does not consider ((2f - 1f - 4) >> 16) a constant expression for movt. |
| 928 | "movt ip, #(0x40000 >> 16)\n" |
| 929 | "1:\n" |
| 930 | "add ip, pc\n" |
| 931 | "vldr d3, [ip, #0]\n" + |
| 932 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 933 | ".align 2, 0\n" |
| 934 | "2:\n" |
| 935 | ".word 0x87654321\n" |
| 936 | ".word 0x12345678\n"; |
| 937 | DriverStr(expected, "LoadLiteralDoubleBeyondMax256KiB"); |
| 938 | |
| 939 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 10u, |
| 940 | __ GetAdjustedPosition(label.Position())); |
| 941 | } |
| 942 | |
| 943 | TEST_F(AssemblerThumb2Test, LoadLiteralDoubleFar) { |
| 944 | // The literal size must match but the type doesn't, so use an int64_t rather than double. |
| 945 | arm::Literal* literal = __ NewLiteral<int64_t>(INT64_C(0x1234567887654321)); |
| 946 | __ LoadLiteral(arm::D3, literal); |
| 947 | Label label; |
| 948 | __ Bind(&label); |
| 949 | constexpr size_t kLdrR0R0Count = (1 << 17) - 2u + 0x1234; |
| 950 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 951 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 952 | } |
| 953 | |
| 954 | std::string expected = |
| 955 | // "as" does not consider ((2f - 1f - 4) & 0xffff) a constant expression for movw. |
| 956 | "movw ip, #((0x40000 + 2 * 0x1234) & 0xffff)\n" |
| 957 | // "as" does not consider ((2f - 1f - 4) >> 16) a constant expression for movt. |
| 958 | "movt ip, #((0x40000 + 2 * 0x1234) >> 16)\n" |
| 959 | "1:\n" |
| 960 | "add ip, pc\n" |
| 961 | "vldr d3, [ip, #0]\n" + |
| 962 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 963 | ".align 2, 0\n" |
| 964 | "2:\n" |
| 965 | ".word 0x87654321\n" |
| 966 | ".word 0x12345678\n"; |
| 967 | DriverStr(expected, "LoadLiteralDoubleFar"); |
| 968 | |
| 969 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 10u, |
| 970 | __ GetAdjustedPosition(label.Position())); |
| 971 | } |
| 972 | |
Vladimir Marko | 663c934 | 2015-07-22 11:28:14 +0100 | [diff] [blame] | 973 | TEST_F(AssemblerThumb2Test, LoadLiteralBeyondMax1KiBDueToAlignmentOnSecondPass) { |
| 974 | // First part: as TwoCbzBeyondMaxOffset but add one 16-bit instruction to the end, |
| 975 | // so that the size is not Aligned<4>(.). On the first pass, the assembler resizes |
| 976 | // the second CBZ because it's out of range, then it will resize the first CBZ |
| 977 | // which has been pushed out of range. Thus, after the first pass, the code size |
| 978 | // will appear Aligned<4>(.) but the final size will not be. |
| 979 | Label label0, label1, label2; |
| 980 | __ cbz(arm::R0, &label1); |
| 981 | constexpr size_t kLdrR0R0Count1 = 63; |
| 982 | for (size_t i = 0; i != kLdrR0R0Count1; ++i) { |
| 983 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 984 | } |
| 985 | __ Bind(&label0); |
| 986 | __ cbz(arm::R0, &label2); |
| 987 | __ Bind(&label1); |
| 988 | constexpr size_t kLdrR0R0Count2 = 65; |
| 989 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { |
| 990 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 991 | } |
| 992 | __ Bind(&label2); |
| 993 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 994 | |
| 995 | std::string expected_part1 = |
| 996 | "cmp r0, #0\n" // cbz r0, label1 |
| 997 | "beq.n 1f\n" + |
| 998 | RepeatInsn(kLdrR0R0Count1, "ldr r0, [r0]\n") + |
| 999 | "0:\n" |
| 1000 | "cmp r0, #0\n" // cbz r0, label2 |
| 1001 | "beq.n 2f\n" |
| 1002 | "1:\n" + |
| 1003 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 1004 | "2:\n" // Here the offset is Aligned<4>(.). |
| 1005 | "ldr r0, [r0]\n"; // Make the first part |
| 1006 | |
| 1007 | // Second part: as LoadLiteralMax1KiB with the caveat that the offset of the load |
| 1008 | // literal will not be Aligned<4>(.) but it will appear to be when we process the |
| 1009 | // instruction during the first pass, so the literal will need a padding and it |
| 1010 | // will push the literal out of range, so we shall end up with "ldr.w". |
| 1011 | arm::Literal* literal = __ NewLiteral<int32_t>(0x12345678); |
| 1012 | __ LoadLiteral(arm::R0, literal); |
| 1013 | Label label; |
| 1014 | __ Bind(&label); |
| 1015 | constexpr size_t kLdrR0R0Count = 511; |
| 1016 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1017 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1018 | } |
| 1019 | |
| 1020 | std::string expected = |
| 1021 | expected_part1 + |
| 1022 | "1:\n" |
| 1023 | "ldr.w r0, [pc, #((2f - 1b - 2) & ~2)]\n" + |
| 1024 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1025 | ".align 2, 0\n" |
| 1026 | "2:\n" |
| 1027 | ".word 0x12345678\n"; |
| 1028 | DriverStr(expected, "LoadLiteralMax1KiB"); |
| 1029 | |
| 1030 | EXPECT_EQ(static_cast<uint32_t>(label.Position()) + 6u, |
| 1031 | __ GetAdjustedPosition(label.Position())); |
| 1032 | } |
| 1033 | |
Andreas Gampe | 7cffc3b | 2015-10-19 21:31:53 -0700 | [diff] [blame] | 1034 | TEST_F(AssemblerThumb2Test, BindTrackedLabel) { |
| 1035 | Label non_tracked, tracked, branch_target; |
| 1036 | |
| 1037 | // A few dummy loads on entry. |
| 1038 | constexpr size_t kLdrR0R0Count = 5; |
| 1039 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1040 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1041 | } |
| 1042 | |
| 1043 | // A branch that will need to be fixed up. |
| 1044 | __ cbz(arm::R0, &branch_target); |
| 1045 | |
| 1046 | // Some more dummy loads. |
| 1047 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1048 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1049 | } |
| 1050 | |
| 1051 | // Now insert tracked and untracked label. |
| 1052 | __ Bind(&non_tracked); |
| 1053 | __ BindTrackedLabel(&tracked); |
| 1054 | |
| 1055 | // A lot of dummy loads, to ensure the branch needs resizing. |
| 1056 | constexpr size_t kLdrR0R0CountLong = 60; |
| 1057 | for (size_t i = 0; i != kLdrR0R0CountLong; ++i) { |
| 1058 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1059 | } |
| 1060 | |
| 1061 | // Bind the branch target. |
| 1062 | __ Bind(&branch_target); |
| 1063 | |
| 1064 | // One more load. |
| 1065 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1066 | |
| 1067 | std::string expected = |
| 1068 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1069 | "cmp r0, #0\n" // cbz r0, 1f |
| 1070 | "beq.n 1f\n" + |
| 1071 | RepeatInsn(kLdrR0R0Count + kLdrR0R0CountLong, "ldr r0, [r0]\n") + |
| 1072 | "1:\n" |
| 1073 | "ldr r0, [r0]\n"; |
| 1074 | DriverStr(expected, "BindTrackedLabel"); |
| 1075 | |
| 1076 | // Expectation is that the tracked label should have moved. |
| 1077 | EXPECT_LT(non_tracked.Position(), tracked.Position()); |
| 1078 | } |
| 1079 | |
| 1080 | TEST_F(AssemblerThumb2Test, JumpTable) { |
| 1081 | // The jump table. Use three labels. |
| 1082 | Label label1, label2, label3; |
| 1083 | std::vector<Label*> labels({ &label1, &label2, &label3 }); |
| 1084 | |
| 1085 | // A few dummy loads on entry, interspersed with 2 labels. |
| 1086 | constexpr size_t kLdrR0R0Count = 5; |
| 1087 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1088 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1089 | } |
| 1090 | __ BindTrackedLabel(&label1); |
| 1091 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1092 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1093 | } |
| 1094 | __ BindTrackedLabel(&label2); |
| 1095 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1096 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1097 | } |
| 1098 | |
| 1099 | // Create the jump table, emit the base load. |
| 1100 | arm::JumpTable* jump_table = __ CreateJumpTable(std::move(labels), arm::R1); |
| 1101 | |
| 1102 | // Dummy computation, stand-in for the address. We're only testing the jump table here, not how |
| 1103 | // it's being used. |
| 1104 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1105 | |
| 1106 | // Emit the jump |
| 1107 | __ EmitJumpTableDispatch(jump_table, arm::R1); |
| 1108 | |
| 1109 | // Some more dummy instructions. |
| 1110 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1111 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1112 | } |
| 1113 | __ BindTrackedLabel(&label3); |
| 1114 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { // Note: odd so there's no alignment |
| 1115 | __ ldr(arm::R0, arm::Address(arm::R0)); // necessary, as gcc as emits nops, |
| 1116 | } // whereas we emit 0 != nop. |
| 1117 | |
| 1118 | static_assert((kLdrR0R0Count + 3) * 2 < 1 * KB, "Too much offset"); |
| 1119 | |
| 1120 | std::string expected = |
| 1121 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1122 | ".L1:\n" + |
| 1123 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1124 | ".L2:\n" + |
| 1125 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1126 | "adr r1, .Ljump_table\n" |
| 1127 | "ldr r0, [r0]\n" |
| 1128 | ".Lbase:\n" |
| 1129 | "add pc, r1\n" + |
| 1130 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1131 | ".L3:\n" + |
| 1132 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1133 | ".align 2\n" |
| 1134 | ".Ljump_table:\n" |
| 1135 | ".4byte (.L1 - .Lbase - 4)\n" |
| 1136 | ".4byte (.L2 - .Lbase - 4)\n" |
| 1137 | ".4byte (.L3 - .Lbase - 4)\n"; |
| 1138 | DriverStr(expected, "JumpTable"); |
| 1139 | } |
| 1140 | |
| 1141 | // Test for >1K fixup. |
| 1142 | TEST_F(AssemblerThumb2Test, JumpTable4K) { |
| 1143 | // The jump table. Use three labels. |
| 1144 | Label label1, label2, label3; |
| 1145 | std::vector<Label*> labels({ &label1, &label2, &label3 }); |
| 1146 | |
| 1147 | // A few dummy loads on entry, interspersed with 2 labels. |
| 1148 | constexpr size_t kLdrR0R0Count = 5; |
| 1149 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1150 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1151 | } |
| 1152 | __ BindTrackedLabel(&label1); |
| 1153 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1154 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1155 | } |
| 1156 | __ BindTrackedLabel(&label2); |
| 1157 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1158 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1159 | } |
| 1160 | |
| 1161 | // Create the jump table, emit the base load. |
| 1162 | arm::JumpTable* jump_table = __ CreateJumpTable(std::move(labels), arm::R1); |
| 1163 | |
| 1164 | // Dummy computation, stand-in for the address. We're only testing the jump table here, not how |
| 1165 | // it's being used. |
| 1166 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1167 | |
| 1168 | // Emit the jump |
| 1169 | __ EmitJumpTableDispatch(jump_table, arm::R1); |
| 1170 | |
| 1171 | // Some more dummy instructions. |
| 1172 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1173 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1174 | } |
| 1175 | __ BindTrackedLabel(&label3); |
| 1176 | constexpr size_t kLdrR0R0Count2 = 600; // Note: even so there's no alignment |
| 1177 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { // necessary, as gcc as emits nops, |
| 1178 | __ ldr(arm::R0, arm::Address(arm::R0)); // whereas we emit 0 != nop. |
| 1179 | } |
| 1180 | |
| 1181 | static_assert((kLdrR0R0Count + kLdrR0R0Count2 + 3) * 2 > 1 * KB, "Not enough offset"); |
| 1182 | static_assert((kLdrR0R0Count + kLdrR0R0Count2 + 3) * 2 < 4 * KB, "Too much offset"); |
| 1183 | |
| 1184 | std::string expected = |
| 1185 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1186 | ".L1:\n" + |
| 1187 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1188 | ".L2:\n" + |
| 1189 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1190 | "adr r1, .Ljump_table\n" |
| 1191 | "ldr r0, [r0]\n" |
| 1192 | ".Lbase:\n" |
| 1193 | "add pc, r1\n" + |
| 1194 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1195 | ".L3:\n" + |
| 1196 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 1197 | ".align 2\n" |
| 1198 | ".Ljump_table:\n" |
| 1199 | ".4byte (.L1 - .Lbase - 4)\n" |
| 1200 | ".4byte (.L2 - .Lbase - 4)\n" |
| 1201 | ".4byte (.L3 - .Lbase - 4)\n"; |
| 1202 | DriverStr(expected, "JumpTable4K"); |
| 1203 | } |
| 1204 | |
| 1205 | // Test for >4K fixup. |
| 1206 | TEST_F(AssemblerThumb2Test, JumpTable64K) { |
| 1207 | // The jump table. Use three labels. |
| 1208 | Label label1, label2, label3; |
| 1209 | std::vector<Label*> labels({ &label1, &label2, &label3 }); |
| 1210 | |
| 1211 | // A few dummy loads on entry, interspersed with 2 labels. |
| 1212 | constexpr size_t kLdrR0R0Count = 5; |
| 1213 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1214 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1215 | } |
| 1216 | __ BindTrackedLabel(&label1); |
| 1217 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1218 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1219 | } |
| 1220 | __ BindTrackedLabel(&label2); |
| 1221 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1222 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1223 | } |
| 1224 | |
| 1225 | // Create the jump table, emit the base load. |
| 1226 | arm::JumpTable* jump_table = __ CreateJumpTable(std::move(labels), arm::R1); |
| 1227 | |
| 1228 | // Dummy computation, stand-in for the address. We're only testing the jump table here, not how |
| 1229 | // it's being used. |
| 1230 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1231 | |
| 1232 | // Emit the jump |
| 1233 | __ EmitJumpTableDispatch(jump_table, arm::R1); |
| 1234 | |
| 1235 | // Some more dummy instructions. |
| 1236 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1237 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1238 | } |
| 1239 | __ BindTrackedLabel(&label3); |
| 1240 | constexpr size_t kLdrR0R0Count2 = 2601; // Note: odd so there's no alignment |
| 1241 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { // necessary, as gcc as emits nops, |
| 1242 | __ ldr(arm::R0, arm::Address(arm::R0)); // whereas we emit 0 != nop. |
| 1243 | } |
| 1244 | |
| 1245 | static_assert((kLdrR0R0Count + kLdrR0R0Count2 + 3) * 2 > 4 * KB, "Not enough offset"); |
| 1246 | static_assert((kLdrR0R0Count + kLdrR0R0Count2 + 3) * 2 < 64 * KB, "Too much offset"); |
| 1247 | |
| 1248 | std::string expected = |
| 1249 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1250 | ".L1:\n" + |
| 1251 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1252 | ".L2:\n" + |
| 1253 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1254 | // ~ adr r1, .Ljump_table, gcc as can't seem to fix up a large offset itself. |
| 1255 | // (Note: have to use constants, as labels aren't accepted. |
| 1256 | "movw r1, #(((3 + " + StringPrintf("%zu", kLdrR0R0Count + kLdrR0R0Count2) + |
| 1257 | ") * 2 - 4) & 0xFFFF)\n" |
| 1258 | "add r1, pc\n" |
| 1259 | "ldr r0, [r0]\n" |
| 1260 | ".Lbase:\n" |
| 1261 | "add pc, r1\n" + |
| 1262 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1263 | ".L3:\n" + |
| 1264 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 1265 | ".align 2\n" |
| 1266 | ".Ljump_table:\n" |
| 1267 | ".4byte (.L1 - .Lbase - 4)\n" |
| 1268 | ".4byte (.L2 - .Lbase - 4)\n" |
| 1269 | ".4byte (.L3 - .Lbase - 4)\n"; |
| 1270 | DriverStr(expected, "JumpTable64K"); |
| 1271 | } |
| 1272 | |
| 1273 | // Test for >64K fixup. |
| 1274 | TEST_F(AssemblerThumb2Test, JumpTableFar) { |
| 1275 | // The jump table. Use three labels. |
| 1276 | Label label1, label2, label3; |
| 1277 | std::vector<Label*> labels({ &label1, &label2, &label3 }); |
| 1278 | |
| 1279 | // A few dummy loads on entry, interspersed with 2 labels. |
| 1280 | constexpr size_t kLdrR0R0Count = 5; |
| 1281 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1282 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1283 | } |
| 1284 | __ BindTrackedLabel(&label1); |
| 1285 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1286 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1287 | } |
| 1288 | __ BindTrackedLabel(&label2); |
| 1289 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1290 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1291 | } |
| 1292 | |
| 1293 | // Create the jump table, emit the base load. |
| 1294 | arm::JumpTable* jump_table = __ CreateJumpTable(std::move(labels), arm::R1); |
| 1295 | |
| 1296 | // Dummy computation, stand-in for the address. We're only testing the jump table here, not how |
| 1297 | // it's being used. |
| 1298 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1299 | |
| 1300 | // Emit the jump |
| 1301 | __ EmitJumpTableDispatch(jump_table, arm::R1); |
| 1302 | |
| 1303 | // Some more dummy instructions. |
| 1304 | for (size_t i = 0; i != kLdrR0R0Count; ++i) { |
| 1305 | __ ldr(arm::R0, arm::Address(arm::R0)); |
| 1306 | } |
| 1307 | __ BindTrackedLabel(&label3); |
| 1308 | constexpr size_t kLdrR0R0Count2 = 70001; // Note: odd so there's no alignment |
| 1309 | for (size_t i = 0; i != kLdrR0R0Count2; ++i) { // necessary, as gcc as emits nops, |
| 1310 | __ ldr(arm::R0, arm::Address(arm::R0)); // whereas we emit 0 != nop. |
| 1311 | } |
| 1312 | |
| 1313 | static_assert((kLdrR0R0Count + kLdrR0R0Count2 + 3) * 2 > 64 * KB, "Not enough offset"); |
| 1314 | |
| 1315 | std::string expected = |
| 1316 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1317 | ".L1:\n" + |
| 1318 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1319 | ".L2:\n" + |
| 1320 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1321 | // ~ adr r1, .Ljump_table, gcc as can't seem to fix up a large offset itself. |
| 1322 | // (Note: have to use constants, as labels aren't accepted. |
| 1323 | "movw r1, #(((3 + " + StringPrintf("%zu", kLdrR0R0Count + kLdrR0R0Count2) + |
| 1324 | ") * 2 - 4) & 0xFFFF)\n" |
| 1325 | "movt r1, #(((3 + " + StringPrintf("%zu", kLdrR0R0Count + kLdrR0R0Count2) + |
| 1326 | ") * 2 - 4) >> 16)\n" |
| 1327 | ".Lhelp:" |
| 1328 | "add r1, pc\n" |
| 1329 | "ldr r0, [r0]\n" |
| 1330 | ".Lbase:\n" |
| 1331 | "add pc, r1\n" + |
| 1332 | RepeatInsn(kLdrR0R0Count, "ldr r0, [r0]\n") + |
| 1333 | ".L3:\n" + |
| 1334 | RepeatInsn(kLdrR0R0Count2, "ldr r0, [r0]\n") + |
| 1335 | ".align 2\n" |
| 1336 | ".Ljump_table:\n" |
| 1337 | ".4byte (.L1 - .Lbase - 4)\n" |
| 1338 | ".4byte (.L2 - .Lbase - 4)\n" |
| 1339 | ".4byte (.L3 - .Lbase - 4)\n"; |
| 1340 | DriverStr(expected, "JumpTableFar"); |
| 1341 | } |
| 1342 | |
Scott Wakeling | 611d339 | 2015-07-10 11:42:06 +0100 | [diff] [blame] | 1343 | TEST_F(AssemblerThumb2Test, Clz) { |
| 1344 | __ clz(arm::R0, arm::R1); |
| 1345 | |
| 1346 | const char* expected = "clz r0, r1\n"; |
| 1347 | |
| 1348 | DriverStr(expected, "clz"); |
| 1349 | } |
| 1350 | |
Scott Wakeling | 9ee23f4 | 2015-07-23 10:44:35 +0100 | [diff] [blame] | 1351 | TEST_F(AssemblerThumb2Test, rbit) { |
| 1352 | __ rbit(arm::R1, arm::R0); |
| 1353 | |
| 1354 | const char* expected = "rbit r1, r0\n"; |
| 1355 | |
| 1356 | DriverStr(expected, "rbit"); |
| 1357 | } |
| 1358 | |
Artem Serov | c257da7 | 2016-02-02 13:49:43 +0000 | [diff] [blame] | 1359 | TEST_F(AssemblerThumb2Test, rev) { |
| 1360 | __ rev(arm::R1, arm::R0); |
| 1361 | |
| 1362 | const char* expected = "rev r1, r0\n"; |
| 1363 | |
| 1364 | DriverStr(expected, "rev"); |
| 1365 | } |
| 1366 | |
| 1367 | TEST_F(AssemblerThumb2Test, rev16) { |
| 1368 | __ rev16(arm::R1, arm::R0); |
| 1369 | |
| 1370 | const char* expected = "rev16 r1, r0\n"; |
| 1371 | |
| 1372 | DriverStr(expected, "rev16"); |
| 1373 | } |
| 1374 | |
| 1375 | TEST_F(AssemblerThumb2Test, revsh) { |
| 1376 | __ revsh(arm::R1, arm::R0); |
| 1377 | |
| 1378 | const char* expected = "revsh r1, r0\n"; |
| 1379 | |
| 1380 | DriverStr(expected, "revsh"); |
| 1381 | } |
| 1382 | |
Roland Levillain | 1a28fc4 | 2014-11-13 18:03:06 +0000 | [diff] [blame] | 1383 | } // namespace art |