1 2# RUN: ld64.lld.darwinold -arch x86_64 -r %s -o %t -print_atoms | FileCheck %s \ 3# RUN: && ld64.lld.darwinold -arch x86_64 %t -r -print_atoms -o %t2 | FileCheck %s 4# 5# Test parsing and writing of x86_64 data relocations. 6# 7# The first step tests if the supplied mach-o file is parsed into the correct 8# set of references. The second step verifies relocations can be round-tripped 9# by writing to a new .o file, then parsing that file which should result in 10# the same references. 11# 12#_foo: 13# ret 14# 15#_bar: 16# ret 17# 18# .section __DATA,__custom 19#L1: 20# .quad 0 21# 22# .data 23#_d: 24# .quad _foo 25# .quad _foo+4 26# .quad _foo - . 27# .quad L1 28# .quad L1 + 2 29# .quad _foo - . 30# .quad _foo + 4 - . 31# .quad L1 - . 32# .long _foo - . 33# .long _foo + 4 - . 34# .long L1 - . 35# 36 37--- !mach-o 38arch: x86_64 39file-type: MH_OBJECT 40flags: [ ] 41compat-version: 0.0 42current-version: 0.0 43has-UUID: false 44OS: unknown 45sections: 46 - segment: __TEXT 47 section: __text 48 type: S_REGULAR 49 attributes: [ S_ATTR_PURE_INSTRUCTIONS, S_ATTR_SOME_INSTRUCTIONS ] 50 address: 0x0000000000000000 51 content: [ 0xC3, 0xC3 ] 52 - segment: __DATA 53 section: __custom 54 type: S_REGULAR 55 attributes: [ ] 56 address: 0x0000000000000002 57 content: [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ] 58 - segment: __DATA 59 section: __data 60 type: S_REGULAR 61 attributes: [ ] 62 address: 0x000000000000000A 63 content: [ 64# .quad _foo 65# No addend is needed here as we are referencing _foo directly and that is 66# encoded entirely in the X86_64_RELOC_UNSIGNED 67 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 68# .quad _foo+4 69# Addend of 4 is needed here as we are referencing _foo from the 70# X86_64_RELOC_UNSIGNED, then the addend gives us 4 more. 71 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 72# .quad _foo - . 73# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 74# The subtractor references _d which is the first nonlocal label in this 75# section. The unsigned references _foo. 76# Note the addend here is -16 because that is the offset from here back 77# to _d. 78 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 79# .quad . - _foo 80# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 81# The subtractor references _d which is the first nonlocal label in this 82# section. The unsigned references _foo. 83# Note the addend here is -16 because that is the offset from here back 84# to _d. 85 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 86# .quad L1 87# This is a X86_64_RELOC_UNSIGNED without extern set. 88# In this case, we encode the section number for L1 in the relocation, and 89# the addend here is the absolute address of the location in that section 90# we want to reference. 91 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 92# .quad L1 + 2 93# This is a X86_64_RELOC_UNSIGNED without extern set. 94# In this case, we encode the section number for L1 in the relocation, and 95# the addend here is the absolute address of the location in that section 96# we want to reference. We have a 4 because the section is at address 2 97# and we want an offset of 2 from there. 98 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 99# .quad _foo - . 100# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 101# The subtractor references _d which is the first nonlocal label in this 102# section. The unsigned references _foo. 103# Note the addend here is -40 because that is the offset from here back 104# to _d. 105 0xD0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 106# .quad _foo + 4 - . 107# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 108# The subtractor references _d which is the first nonlocal label in this 109# section. The unsigned references _foo. 110# Note the addend here is -52. It would have been -56 because that 111# would take us from the address of this relocation back to _d. But as 112# we also add 4 for the offset, we get -52. 113 0xCC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 114# .quad L1 - . 115# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 116# The subtractor references _d which is the first nonlocal label in this 117# section. The unsigned does not have extern set, so the relocation 118# number is the section number for L1. 119# Note the addend here is -62. Of that, -64 would be the offset from 120# this location from _d. The remaining 2 is the absolute address 121# of L1. 122 0xC2, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 123# .long _foo - . 124# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 125# The subtractor references _d which is the first nonlocal label in this 126# section. The unsigned references _foo. 127# Note the addend here is -72 because that is the offset from here back 128# to _d. 129 0xB8, 0xFF, 0xFF, 0xFF, 130# .long . - _foo 131# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 132# The subtractor references _d which is the first nonlocal label in this 133# section. The unsigned references _foo. 134# Note the addend here is -76 because that is the offset from here back 135# to _d. 136 0xB4, 0xFF, 0xFF, 0xFF, 137# .long _foo + 4 - . 138# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 139# The subtractor references _d which is the first nonlocal label in this 140# section. The unsigned references _foo. 141# Note the addend here is -76. It would have been -80 because that 142# would take us from the address of this relocation back to _d. But as 143# we also add 4 for the offset, we get -76. 144 0xB4, 0xFF, 0xFF, 0xFF, 145# .long L1 - . 146# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED. 147# The subtractor references _d which is the first nonlocal label in this 148# section. The unsigned does not have extern set, so the relocation 149# number is the section number for L1. 150# Note the addend here is -82. Of that, -84 would be the offset from 151# this location from _d. The remaining 2 is the absolute address 152# of L1. 153 0xAE, 0xFF, 0xFF, 0xFF ] 154 relocations: 155 - offset: 0x00000054 156 type: X86_64_RELOC_SUBTRACTOR 157 length: 2 158 pc-rel: false 159 extern: true 160 symbol: 2 161 - offset: 0x00000054 162 type: X86_64_RELOC_UNSIGNED 163 length: 2 164 pc-rel: false 165 extern: false 166 symbol: 2 167 - offset: 0x00000050 168 type: X86_64_RELOC_SUBTRACTOR 169 length: 2 170 pc-rel: false 171 extern: true 172 symbol: 2 173 - offset: 0x00000050 174 type: X86_64_RELOC_UNSIGNED 175 length: 2 176 pc-rel: false 177 extern: true 178 symbol: 0 179 - offset: 0x0000004C 180 type: X86_64_RELOC_SUBTRACTOR 181 length: 2 182 pc-rel: false 183 extern: true 184 symbol: 0 185 - offset: 0x0000004C 186 type: X86_64_RELOC_UNSIGNED 187 length: 2 188 pc-rel: false 189 extern: true 190 symbol: 2 191 - offset: 0x00000048 192 type: X86_64_RELOC_SUBTRACTOR 193 length: 2 194 pc-rel: false 195 extern: true 196 symbol: 2 197 - offset: 0x00000048 198 type: X86_64_RELOC_UNSIGNED 199 length: 2 200 pc-rel: false 201 extern: true 202 symbol: 0 203 - offset: 0x00000040 204 type: X86_64_RELOC_SUBTRACTOR 205 length: 3 206 pc-rel: false 207 extern: true 208 symbol: 2 209 - offset: 0x00000040 210 type: X86_64_RELOC_UNSIGNED 211 length: 3 212 pc-rel: false 213 extern: false 214 symbol: 2 215 - offset: 0x00000038 216 type: X86_64_RELOC_SUBTRACTOR 217 length: 3 218 pc-rel: false 219 extern: true 220 symbol: 2 221 - offset: 0x00000038 222 type: X86_64_RELOC_UNSIGNED 223 length: 3 224 pc-rel: false 225 extern: true 226 symbol: 0 227 - offset: 0x00000030 228 type: X86_64_RELOC_SUBTRACTOR 229 length: 3 230 pc-rel: false 231 extern: true 232 symbol: 2 233 - offset: 0x00000030 234 type: X86_64_RELOC_UNSIGNED 235 length: 3 236 pc-rel: false 237 extern: true 238 symbol: 0 239 - offset: 0x00000028 240 type: X86_64_RELOC_UNSIGNED 241 length: 3 242 pc-rel: false 243 extern: false 244 symbol: 2 245 - offset: 0x00000020 246 type: X86_64_RELOC_UNSIGNED 247 length: 3 248 pc-rel: false 249 extern: false 250 symbol: 2 251 - offset: 0x00000018 252 type: X86_64_RELOC_SUBTRACTOR 253 length: 3 254 pc-rel: false 255 extern: true 256 symbol: 0 257 - offset: 0x00000018 258 type: X86_64_RELOC_UNSIGNED 259 length: 3 260 pc-rel: false 261 extern: true 262 symbol: 2 263 - offset: 0x00000010 264 type: X86_64_RELOC_SUBTRACTOR 265 length: 3 266 pc-rel: false 267 extern: true 268 symbol: 2 269 - offset: 0x00000010 270 type: X86_64_RELOC_UNSIGNED 271 length: 3 272 pc-rel: false 273 extern: true 274 symbol: 0 275 - offset: 0x00000008 276 type: X86_64_RELOC_UNSIGNED 277 length: 3 278 pc-rel: false 279 extern: true 280 symbol: 0 281 - offset: 0x00000000 282 type: X86_64_RELOC_UNSIGNED 283 length: 3 284 pc-rel: false 285 extern: true 286 symbol: 0 287local-symbols: 288 - name: _foo 289 type: N_SECT 290 sect: 1 291 value: 0x0000000000000000 292 - name: _bar 293 type: N_SECT 294 sect: 1 295 value: 0x0000000000000001 296 - name: _d 297 type: N_SECT 298 sect: 3 299 value: 0x000000000000000A 300page-size: 0x00000000 301... 302 303 304# CHECK:defined-atoms: 305# CHECK: - name: _d 306# CHECK: type: data 307# CHECK: content: [ 00, 00, 00, 00, 00, 00, 00, 00, 04, 00, 00, 00, 308# CHECK: 00, 00, 00, 00, F0, FF, FF, FF, FF, FF, FF, FF, 309# CHECK: 18, 00, 00, 00, 00, 00, 00, 00, {{..}}, {{..}}, 00, 00, 310# CHECK: 00, 00, 00, 00, {{..}}, {{..}}, 00, 00, 00, 00, 00, 00, 311# CHECK: D0, FF, FF, FF, FF, FF, FF, FF, CC, FF, FF, FF, 312# CHECK: FF, FF, FF, FF, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, 313# CHECK: B8, FF, FF, FF, B4, FF, FF, FF, B4, FF, FF, FF, 314# CHECK: {{..}}, {{..}}, {{..}}, {{..}} ] 315# CHECK: dead-strip: never 316# CHECK: references: 317# CHECK: - kind: pointer64 318# CHECK: offset: 0 319# CHECK: target: _foo 320# CHECK: - kind: pointer64 321# CHECK: offset: 8 322# CHECK: target: _foo 323# CHECK: addend: 4 324# CHECK: - kind: delta64 325# CHECK: offset: 16 326# CHECK: target: _foo 327# CHECK: - kind: negDelta64 328# CHECK: offset: 24 329# CHECK: target: _foo 330# CHECK: - kind: pointer64Anon 331# CHECK: offset: 32 332# CHECK: target: L003 333# CHECK: - kind: pointer64Anon 334# CHECK: offset: 40 335# CHECK: target: L003 336# CHECK: addend: 2 337# CHECK: - kind: delta64 338# CHECK: offset: 48 339# CHECK: target: _foo 340# CHECK: - kind: delta64 341# CHECK: offset: 56 342# CHECK: target: _foo 343# CHECK: addend: 4 344# CHECK: - kind: delta64Anon 345# CHECK: offset: 64 346# CHECK: target: L003 347# CHECK: - kind: delta32 348# CHECK: offset: 72 349# CHECK: target: _foo 350# CHECK: - kind: negDelta32 351# CHECK: offset: 76 352# CHECK: target: _foo 353# CHECK: - kind: delta32 354# CHECK: offset: 80 355# CHECK: target: _foo 356# CHECK: addend: 4 357# CHECK: - kind: delta32Anon 358# CHECK: offset: 84 359# CHECK: target: L003 360# CHECK: - name: _foo 361# CHECK: content: [ C3 ] 362# CHECK: dead-strip: never 363# CHECK: - name: _bar 364# CHECK: content: [ C3 ] 365# CHECK: dead-strip: never 366# CHECK: - ref-name: L003 367# CHECK: type: unknown 368# CHECK: content: [ 00, 00, 00, 00, 00, 00, 00, 00 ] 369# CHECK: section-choice: custom-required 370# CHECK: section-name: '__DATA/__custom' 371# CHECK: dead-strip: never 372 373