llvm/test/ExecutionEngine/JITLink/AArch64/MachO_arm64_relocations.s

   1 # RUN: rm -rf %t && mkdir -p %t
   2 # RUN: llvm-mc -triple=arm64-apple-darwin19 -filetype=obj -o %t/macho_reloc.o %s
   3 # RUN: llvm-jitlink -noexec -define-abs external_data=0xdeadbeef -define-abs external_func=0xcafef00d -check=%s %t/macho_reloc.o
   4
   5         .section        __TEXT,__text,regular,pure_instructions
   6
   7         .p2align  2
   8 Lanon_func:
   9         ret
  10
  11         .globl  named_func
  12         .p2align  2
  13 named_func:
  14         ret
  15
  16 # Check ARM64_RELOC_BRANCH26 handling with a call to a local function.
  17 # The branch instruction only encodes 26 bits of the 28-bit possible branch
  18 # range, since the low 2 bits will always be zero.
  19 #
  20 # jitlink-check: decode_operand(test_local_call, 0)[25:0] = (named_func - test_local_call)[27:2]
  21         .globl  test_local_call
  22         .p2align  2
  23 test_local_call:
  24         bl   named_func
  25
  26         .globl  _main
  27         .p2align  2
  28 _main:
  29         ret
  30
  31 # Check ARM64_RELOC_GOTPAGE21 / ARM64_RELOC_GOTPAGEOFF12 handling with a
  32 # reference to an external symbol. Validate both the reference to the GOT entry,
  33 # and also the content of the GOT entry.
  34 #
  35 # For the GOTPAGE21/ADRP instruction we have the 21-bit delta to the 4k page
  36 # containing the GOT entry for external_data.
  37 #
  38 # For the GOTPAGEOFF/LDR instruction we have the 12-bit offset of the entry
  39 # within the page.
  40 #
  41 # jitlink-check: *{8}(got_addr(macho_reloc.o, external_data)) = external_data
  42 # jitlink-check: decode_operand(test_gotpage21_external, 1) = \
  43 # jitlink-check:     (got_addr(macho_reloc.o, external_data)[32:12] - \
  44 # jitlink-check:        test_gotpage21_external[32:12])
  45 # jitlink-check: decode_operand(test_gotpageoff12_external, 2) = \
  46 # jitlink-check:     got_addr(macho_reloc.o, external_data)[11:3]
  47         .globl  test_gotpage21_external
  48         .p2align  2
  49 test_gotpage21_external:
  50         adrp  x0, external_data@GOTPAGE
  51         .globl  test_gotpageoff12_external
  52 test_gotpageoff12_external:
  53         ldr   x0, [x0, external_data@GOTPAGEOFF]
  54
  55 # Check ARM64_RELOC_GOTPAGE21 / ARM64_RELOC_GOTPAGEOFF12 handling with a
  56 # reference to a defined symbol. Validate both the reference to the GOT entry,
  57 # and also the content of the GOT entry.
  58 # jitlink-check: *{8}(got_addr(macho_reloc.o, named_data)) = named_data
  59 # jitlink-check: decode_operand(test_gotpage21_defined, 1) = \
  60 # jitlink-check:     (got_addr(macho_reloc.o, named_data)[32:12] - \
  61 # jitlink-check:        test_gotpage21_defined[32:12])
  62 # jitlink-check: decode_operand(test_gotpageoff12_defined, 2) = \
  63 # jitlink-check:     got_addr(macho_reloc.o, named_data)[11:3]
  64         .globl  test_gotpage21_defined
  65         .p2align  2
  66 test_gotpage21_defined:
  67         adrp  x0, named_data@GOTPAGE
  68         .globl  test_gotpageoff12_defined
  69 test_gotpageoff12_defined:
  70         ldr   x0, [x0, named_data@GOTPAGEOFF]
  71
  72 # Check ARM64_RELOC_PAGE21 / ARM64_RELOC_PAGEOFF12 handling with a reference to
  73 # a local symbol.
  74 #
  75 # For the PAGE21/ADRP instruction we have the 21-bit delta to the 4k page
  76 # containing the global.
  77 #
  78 # For the GOTPAGEOFF12 relocation we test the ADD instruction, all LDR/GPR
  79 # variants and all LDR/Neon variants.
  80 #
  81 # jitlink-check: decode_operand(test_page21, 1) = ((named_data + 256) - test_page21)[32:12]
  82 # jitlink-check: decode_operand(test_pageoff12add, 2) = (named_data + 256)[11:0]
  83 # jitlink-check: decode_operand(test_pageoff12gpr8, 2) = (named_data + 256)[11:0]
  84 # jitlink-cherk: decode_operand(test_pageoff12gpr8s, 2) = (named_data + 256)[11:0]
  85 # jitlink-check: decode_operand(test_pageoff12gpr16, 2) = (named_data + 256)[11:1]
  86 # jitlink-check: decode_operand(test_pageoff12gpr16s, 2) = (named_data + 256)[11:1]
  87 # jitlink-check: decode_operand(test_pageoff12gpr32, 2) = (named_data + 256)[11:2]
  88 # jitlink-check: decode_operand(test_pageoff12gpr64, 2) = (named_data + 256)[11:3]
  89 # jitlink-check: decode_operand(test_pageoff12neon8, 2) = (named_data + 256)[11:0]
  90 # jitlink-check: decode_operand(test_pageoff12neon16, 2) = (named_data + 256)[11:1]
  91 # jitlink-check: decode_operand(test_pageoff12neon32, 2) = (named_data + 256)[11:2]
  92 # jitlink-check: decode_operand(test_pageoff12neon64, 2) = (named_data + 256)[11:3]
  93 # jitlink-check: decode_operand(test_pageoff12neon128, 2) = (named_data + 256)[11:4]
  94         .globl  test_page21
  95         .p2align  2
  96 test_page21:
  97         adrp  x0, named_data@PAGE + 256
  98
  99         .globl  test_pageoff12add
 100 test_pageoff12add:
 101         add   x0, x0, named_data@PAGEOFF + 256
 102
 103         .globl  test_pageoff12gpr8
 104 test_pageoff12gpr8:
 105         ldrb  w0, [x0, named_data@PAGEOFF + 256]
 106
 107         .globl  test_pageoff12gpr8s
 108 test_pageoff12gpr8s:
 109         ldrsb w0, [x0, named_data@PAGEOFF + 256]
 110
 111         .globl  test_pageoff12gpr16
 112 test_pageoff12gpr16:
 113         ldrh  w0, [x0, named_data@PAGEOFF + 256]
 114
 115         .globl  test_pageoff12gpr16s
 116 test_pageoff12gpr16s:
 117         ldrsh w0, [x0, named_data@PAGEOFF + 256]
 118
 119         .globl  test_pageoff12gpr32
 120 test_pageoff12gpr32:
 121         ldr   w0, [x0, named_data@PAGEOFF + 256]
 122
 123         .globl  test_pageoff12gpr64
 124 test_pageoff12gpr64:
 125         ldr   x0, [x0, named_data@PAGEOFF + 256]
 126
 127         .globl  test_pageoff12neon8
 128 test_pageoff12neon8:
 129         ldr   b0, [x0, named_data@PAGEOFF + 256]
 130
 131         .globl  test_pageoff12neon16
 132 test_pageoff12neon16:
 133         ldr   h0, [x0, named_data@PAGEOFF + 256]
 134
 135         .globl  test_pageoff12neon32
 136 test_pageoff12neon32:
 137         ldr   s0, [x0, named_data@PAGEOFF + 256]
 138
 139         .globl  test_pageoff12neon64
 140 test_pageoff12neon64:
 141         ldr   d0, [x0, named_data@PAGEOFF + 256]
 142
 143         .globl  test_pageoff12neon128
 144 test_pageoff12neon128:
 145         ldr   q0, [x0, named_data@PAGEOFF + 256]
 146
 147 # Check that calls to external functions trigger the generation of stubs and GOT
 148 # entries.
 149 #
 150 # jitlink-check: decode_operand(test_external_call, 0) = (stub_addr(macho_reloc.o, external_func) - test_external_call)[27:2]
 151 # jitlink-check: *{8}(got_addr(macho_reloc.o, external_func)) = external_func
 152         .globl  test_external_call
 153         .p2align  2
 154 test_external_call:
 155         bl   external_func
 156
 157         .section        __DATA,__data
 158
 159 # Storage target for non-extern ARM64_RELOC_SUBTRACTOR relocs.
 160         .p2align  3
 161 Lanon_data:
 162         .quad   0x1111111111111111
 163
 164 # Check ARM64_RELOC_SUBTRACTOR Quad/Long in anonymous storage with anonymous
 165 # minuend: "LA: .quad LA - B + C". The anonymous subtrahend form
 166 # "LA: .quad B - LA + C" is not tested as subtrahends are not permitted to be
 167 # anonymous.
 168 #
 169 # Note: +8 offset in expression below to accounts for sizeof(Lanon_data).
 170 # jitlink-check: *{8}(section_addr(macho_reloc.o, __DATA,__data) + 8) = \
 171 # jitlink-check:     (section_addr(macho_reloc.o, __DATA,__data) + 8) - named_data + 2
 172         .p2align  3
 173 Lanon_minuend_quad:
 174         .quad Lanon_minuend_quad - named_data + 2
 175
 176 # Note: +16 offset in expression below to accounts for sizeof(Lanon_data) + sizeof(Lanon_minuend_long).
 177 # jitlink-check: *{4}(section_addr(macho_reloc.o, __DATA,__data) + 16) = \
 178 # jitlink-check:     ((section_addr(macho_reloc.o, __DATA,__data) + 16) - named_data + 2)[31:0]
 179         .p2align  2
 180 Lanon_minuend_long:
 181         .long Lanon_minuend_long - named_data + 2
 182
 183 # Named quad storage target (first named atom in __data).
 184 # Align to 16 for use as 128-bit load target.
 185         .globl named_data
 186         .p2align  4
 187 named_data:
 188         .quad   0x2222222222222222
 189         .quad   0x3333333333333333
 190
 191 # An alt-entry point for named_data
 192         .globl named_data_alt_entry
 193         .p2align  3
 194         .alt_entry named_data_alt_entry
 195 named_data_alt_entry:
 196         .quad   0
 197
 198 # Check ARM64_RELOC_UNSIGNED / quad / extern handling by putting the address of
 199 # a local named function into a quad symbol.
 200 #
 201 # jitlink-check: *{8}named_func_addr_quad = named_func
 202         .globl  named_func_addr_quad
 203         .p2align  3
 204 named_func_addr_quad:
 205         .quad   named_func
 206
 207 # Check ARM64_RELOC_UNSIGNED / quad / non-extern handling by putting the
 208 # address of a local anonymous function into a quad symbol.
 209 #
 210 # jitlink-check: *{8}anon_func_addr_quad = \
 211 # jitlink-check:     section_addr(macho_reloc.o, __TEXT,__text)
 212         .globl  anon_func_addr_quad
 213         .p2align  3
 214 anon_func_addr_quad:
 215         .quad   Lanon_func
 216
 217 # ARM64_RELOC_SUBTRACTOR Quad/Long in named storage with anonymous minuend
 218 #
 219 # jitlink-check: *{8}anon_minuend_quad1 = \
 220 # jitlink-check:     section_addr(macho_reloc.o, __DATA,__data) - anon_minuend_quad1 + 2
 221 # Only the form "B: .quad LA - B + C" is tested. The form "B: .quad B - LA + C" is
 222 # invalid because the subtrahend can not be local.
 223         .globl  anon_minuend_quad1
 224         .p2align  3
 225 anon_minuend_quad1:
 226         .quad Lanon_data - anon_minuend_quad1 + 2
 227
 228 # jitlink-check: *{4}anon_minuend_long1 = \
 229 # jitlink-check:     (section_addr(macho_reloc.o, __DATA,__data) - anon_minuend_long1 + 2)[31:0]
 230         .globl  anon_minuend_long1
 231         .p2align  2
 232 anon_minuend_long1:
 233         .long Lanon_data - anon_minuend_long1 + 2
 234
 235 # Check ARM64_RELOC_SUBTRACTOR Quad/Long in named storage with minuend and subtrahend.
 236 # Both forms "A: .quad A - B + C" and "A: .quad B - A + C" are tested.
 237 #
 238 # Check "A: .quad B - A + C".
 239 # jitlink-check: *{8}subtrahend_quad2 = (named_data - subtrahend_quad2 - 2)
 240         .globl  subtrahend_quad2
 241         .p2align  3
 242 subtrahend_quad2:
 243         .quad named_data - subtrahend_quad2 - 2
 244
 245 # Check "A: .long B - A + C".
 246 # jitlink-check: *{4}subtrahend_long2 = (named_data - subtrahend_long2 - 2)[31:0]
 247         .globl  subtrahend_long2
 248         .p2align  2
 249 subtrahend_long2:
 250         .long named_data - subtrahend_long2 - 2
 251
 252 # Check "A: .quad A - B + C".
 253 # jitlink-check: *{8}minuend_quad3 = (minuend_quad3 - named_data - 2)
 254         .globl  minuend_quad3
 255         .p2align  3
 256 minuend_quad3:
 257         .quad minuend_quad3 - named_data - 2
 258
 259 # Check "A: .long B - A + C".
 260 # jitlink-check: *{4}minuend_long3 = (minuend_long3 - named_data - 2)[31:0]
 261         .globl  minuend_long3
 262         .p2align  2
 263 minuend_long3:
 264         .long minuend_long3 - named_data - 2
 265
 266 # Check ARM64_RELOC_SUBTRACTOR handling for exprs of the form
 267 # "A: .quad/long B - C + D", where 'B' or 'C' is at a fixed offset from 'A'
 268 # (i.e. is part of an alt_entry chain that includes 'A').
 269 #
 270 # Check "A: .long B - C + D" where 'B' is an alt_entry for 'A'.
 271 # jitlink-check: *{4}subtractor_with_alt_entry_minuend_long = (subtractor_with_alt_entry_minuend_long_B - named_data + 2)[31:0]
 272         .globl  subtractor_with_alt_entry_minuend_long
 273         .p2align  2
 274 subtractor_with_alt_entry_minuend_long:
 275         .long subtractor_with_alt_entry_minuend_long_B - named_data + 2
 276
 277         .globl  subtractor_with_alt_entry_minuend_long_B
 278         .p2align  2
 279         .alt_entry subtractor_with_alt_entry_minuend_long_B
 280 subtractor_with_alt_entry_minuend_long_B:
 281         .long 0
 282
 283 # Check "A: .quad B - C + D" where 'B' is an alt_entry for 'A'.
 284 # jitlink-check: *{8}subtractor_with_alt_entry_minuend_quad = (subtractor_with_alt_entry_minuend_quad_B - named_data + 2)
 285         .globl  subtractor_with_alt_entry_minuend_quad
 286         .p2align  3
 287 subtractor_with_alt_entry_minuend_quad:
 288         .quad subtractor_with_alt_entry_minuend_quad_B - named_data + 2
 289
 290         .globl  subtractor_with_alt_entry_minuend_quad_B
 291         .p2align  3
 292         .alt_entry subtractor_with_alt_entry_minuend_quad_B
 293 subtractor_with_alt_entry_minuend_quad_B:
 294         .quad 0
 295
 296 # Check "A: .long B - C + D" where 'C' is an alt_entry for 'A'.
 297 # jitlink-check: *{4}subtractor_with_alt_entry_subtrahend_long = (named_data - subtractor_with_alt_entry_subtrahend_long_B + 2)[31:0]
 298         .globl  subtractor_with_alt_entry_subtrahend_long
 299         .p2align  2
 300 subtractor_with_alt_entry_subtrahend_long:
 301         .long named_data - subtractor_with_alt_entry_subtrahend_long_B + 2
 302
 303         .globl  subtractor_with_alt_entry_subtrahend_long_B
 304         .p2align  2
 305         .alt_entry subtractor_with_alt_entry_subtrahend_long_B
 306 subtractor_with_alt_entry_subtrahend_long_B:
 307         .long 0
 308
 309 # Check "A: .quad B - C + D" where 'B' is an alt_entry for 'A'.
 310 # jitlink-check: *{8}subtractor_with_alt_entry_subtrahend_quad = (named_data - subtractor_with_alt_entry_subtrahend_quad_B + 2)
 311         .globl  subtractor_with_alt_entry_subtrahend_quad
 312         .p2align  3
 313 subtractor_with_alt_entry_subtrahend_quad:
 314         .quad named_data - subtractor_with_alt_entry_subtrahend_quad_B + 2
 315
 316         .globl  subtractor_with_alt_entry_subtrahend_quad_B
 317         .p2align  3
 318         .alt_entry subtractor_with_alt_entry_subtrahend_quad_B
 319 subtractor_with_alt_entry_subtrahend_quad_B:
 320         .quad 0
 321
 322 # Check ARM64_POINTER_TO_GOT handling.
 323 # ARM64_POINTER_TO_GOT is a delta-32 to a GOT entry.
 324 #
 325 # jitlink-check: *{4}test_got = (got_addr(macho_reloc.o, external_data) - test_got)[31:0]
 326         .globl test_got
 327         .p2align  2
 328 test_got:
 329         .long   external_data@got - .
 330
 331 # Check that unreferenced atoms in no-dead-strip sections are not dead stripped.
 332 # We need to use a local symbol for this as any named symbol will end up in the
 333 # ORC responsibility set, which is automatically marked live and would couse
 334 # spurious passes.
 335 #
 336 # jitlink-check: *{8}section_addr(macho_reloc.o, __DATA,__nds_test_sect) = 0
 337         .section        __DATA,__nds_test_sect,regular,no_dead_strip
 338         .quad 0
 339
 340 # Check that unreferenced local symbols that have been marked no-dead-strip are
 341 # not dead-striped.
 342 #
 343 # jitlink-check: *{8}section_addr(macho_reloc.o, __DATA,__nds_test_nlst) = 0
 344         .section       __DATA,__nds_test_nlst,regular
 345         .no_dead_strip no_dead_strip_test_symbol
 346 no_dead_strip_test_symbol:
 347         .quad 0
 348
 349 # Check that explicit zero-fill symbols are supported
 350 # jitlink-check: *{8}zero_fill_test = 0
 351         .globl zero_fill_test
 352 .zerofill __DATA,__zero_fill_test,zero_fill_test,8,3
 353
 354 # Check that section alignments are respected.
 355 # We test this by introducing two segments with alignment 8, each containing one
 356 # byte of data. We require both symbols to have an aligned address.
 357 #
 358 # jitlink-check: section_alignment_check1[2:0] = 0
 359 # jitlink-check: section_alignment_check2[2:0] = 0
 360         .section        __DATA,__sec_align_chk1
 361         .p2align 3
 362
 363         .globl section_alignment_check1
 364 section_alignment_check1:
 365         .byte 0
 366
 367         .section        __DATA,__sec_align_chk2
 368         .p2align 3
 369
 370         .globl section_alignment_check2
 371 section_alignment_check2:
 372         .byte 0
 373
 374 .subsections_via_symbols