lld/test/ELF/aarch64-plt.s

   1 // REQUIRES: aarch64
   2 // RUN: llvm-mc -filetype=obj -triple=aarch64-pc-freebsd %s -o %t.o
   3 // RUN: llvm-mc -filetype=obj -triple=aarch64-pc-freebsd %p/Inputs/plt-aarch64.s -o %t2.o
   4 // RUN: ld.lld -shared %t2.o -soname=t2.so -o %t2.so
   5 // RUN: ld.lld -shared %t.o %t2.so -o %t.so
   6 // RUN: ld.lld %t.o %t2.so -o %t.exe
   7 // RUN: llvm-readobj -S -r %t.so | FileCheck --check-prefix=CHECKDSO %s
   8 // RUN: llvm-objdump -s --section=.got.plt %t.so | FileCheck --check-prefix=DUMPDSO %s
   9 // RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t.so | FileCheck --check-prefix=DISASMDSO %s
  10 // RUN: llvm-readobj -S -r %t.exe | FileCheck --check-prefix=CHECKEXE %s
  11 // RUN: llvm-objdump -s --section=.got.plt %t.exe | FileCheck --check-prefix=DUMPEXE %s
  12 // RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t.exe | FileCheck --check-prefix=DISASMEXE %s
  13
  14 // CHECKDSO:     Name: .plt
  15 // CHECKDSO-NEXT:     Type: SHT_PROGBITS
  16 // CHECKDSO-NEXT:     Flags [
  17 // CHECKDSO-NEXT:       SHF_ALLOC
  18 // CHECKDSO-NEXT:       SHF_EXECINSTR
  19 // CHECKDSO-NEXT:     ]
  20 // CHECKDSO-NEXT:     Address: 0x10340
  21 // CHECKDSO-NEXT:     Offset:
  22 // CHECKDSO-NEXT:     Size: 80
  23 // CHECKDSO-NEXT:     Link:
  24 // CHECKDSO-NEXT:     Info:
  25 // CHECKDSO-NEXT:     AddressAlignment: 16
  26
  27 // CHECKDSO:     Name: .got.plt
  28 // CHECKDSO-NEXT:     Type: SHT_PROGBITS
  29 // CHECKDSO-NEXT:     Flags [
  30 // CHECKDSO-NEXT:       SHF_ALLOC
  31 // CHECKDSO-NEXT:       SHF_WRITE
  32 // CHECKDSO-NEXT:     ]
  33 // CHECKDSO-NEXT:     Address: 0x30450
  34 // CHECKDSO-NEXT:     Offset:
  35 // CHECKDSO-NEXT:     Size: 48
  36 // CHECKDSO-NEXT:     Link:
  37 // CHECKDSO-NEXT:     Info:
  38 // CHECKDSO-NEXT:     AddressAlignment: 8
  39
  40 // CHECKDSO: Relocations [
  41 // CHECKDSO-NEXT:   Section ({{.*}}) .rela.plt {
  42
  43 // &(.got.plt[3]) = 0x30450 + 3 * 8 = 0x30468
  44 // CHECKDSO-NEXT:     0x30468 R_AARCH64_JUMP_SLOT foo
  45
  46 // &(.got.plt[4]) = 0x30450 + 4 * 8 = 0x30470
  47 // CHECKDSO-NEXT:     0x30470 R_AARCH64_JUMP_SLOT bar
  48
  49 // &(.got.plt[5]) = 0x30000 + 5 * 8 = 0x30470
  50 // CHECKDSO-NEXT:     0x30478 R_AARCH64_JUMP_SLOT weak
  51 // CHECKDSO-NEXT:   }
  52 // CHECKDSO-NEXT: ]
  53
  54 // DUMPDSO: Contents of section .got.plt:
  55 // .got.plt[0..2] = 0 (reserved)
  56 // .got.plt[3..5] = .plt = 0x10010
  57 // DUMPDSO-NEXT: 30450 00000000 00000000 00000000 00000000
  58 // DUMPDSO-NEXT: 30460 00000000 00000000 40030100 00000000
  59 // DUMPDSO-NEXT: 30470 40030100 00000000 40030100 00000000
  60
  61 // DISASMDSO: <_start>:
  62 // DISASMDSO-NEXT:     10330: b       0x10360 <foo@plt>
  63 // DISASMDSO-NEXT:     10334: b       0x10370 <bar@plt>
  64 // DISASMDSO-NEXT:     10338: b       0x10380 <weak@plt>
  65
  66 // DISASMDSO: <foo>:
  67 // DISASMDSO-NEXT:     1033c: nop
  68
  69 // DISASMDSO: Disassembly of section .plt:
  70 // DISASMDSO-EMPTY:
  71 // DISASMDSO-NEXT: <.plt>:
  72 // DISASMDSO-NEXT:     10340: stp     x16, x30, [sp, #-0x10]!
  73 // &(.got.plt[2]) = 0x30450 + 2 * 8 = 0x30460
  74 // DISASMDSO-NEXT:     10344: adrp    x16, 0x30000
  75 // DISASMDSO-NEXT:     10348: ldr     x17, [x16, #0x460]
  76 // DISASMDSO-NEXT:     1034c: add     x16, x16, #0x460
  77 // DISASMDSO-NEXT:     10350: br      x17
  78 // DISASMDSO-NEXT:     10354: nop
  79 // DISASMDSO-NEXT:     10358: nop
  80 // DISASMDSO-NEXT:     1035c: nop
  81
  82 // foo@plt 0x30468
  83 // &.got.plt[foo] = 0x30468
  84 // DISASMDSO-EMPTY:
  85 // DISASMDSO-NEXT:   <foo@plt>:
  86 // DISASMDSO-NEXT:     10360: adrp    x16, 0x30000
  87 // DISASMDSO-NEXT:     10364: ldr     x17, [x16, #0x468]
  88 // DISASMDSO-NEXT:     10368: add     x16, x16, #0x468
  89 // DISASMDSO-NEXT:     1036c: br      x17
  90
  91 // bar@plt
  92 // &.got.plt[foo] = 0x30470
  93 // DISASMDSO-EMPTY:
  94 // DISASMDSO-NEXT:   <bar@plt>:
  95 // DISASMDSO-NEXT:     10370: adrp    x16, 0x30000
  96 // DISASMDSO-NEXT:     10374: ldr     x17, [x16, #0x470]
  97 // DISASMDSO-NEXT:     10378: add     x16, x16, #0x470
  98 // DISASMDSO-NEXT:     1037c: br      x17
  99
 100 // weak@plt
 101 // 0x30468 = 0x10000 + 131072 + 1128
 102 // DISASMDSO-EMPTY:
 103 // DISASMDSO-NEXT:   <weak@plt>:
 104 // DISASMDSO-NEXT:     10380: adrp    x16, 0x30000
 105 // DISASMDSO-NEXT:     10384: ldr     x17, [x16, #0x478]
 106 // DISASMDSO-NEXT:     10388: add     x16, x16, #0x478
 107 // DISASMDSO-NEXT:     1038c: br      x17
 108
 109 // CHECKEXE:     Name: .plt
 110 // CHECKEXE-NEXT:     Type: SHT_PROGBITS
 111 // CHECKEXE-NEXT:     Flags [
 112 // CHECKEXE-NEXT:       SHF_ALLOC
 113 // CHECKEXE-NEXT:       SHF_EXECINSTR
 114 // CHECKEXE-NEXT:     ]
 115 // CHECKEXE-NEXT:     Address: 0x2102E0
 116 // CHECKEXE-NEXT:     Offset:
 117 // CHECKEXE-NEXT:     Size: 64
 118 // CHECKEXE-NEXT:     Link:
 119 // CHECKEXE-NEXT:     Info:
 120 // CHECKEXE-NEXT:     AddressAlignment: 16
 121
 122 // CHECKEXE:     Name: .got.plt
 123 // CHECKEXE-NEXT:     Type: SHT_PROGBITS
 124 // CHECKEXE-NEXT:     Flags [
 125 // CHECKEXE-NEXT:       SHF_ALLOC
 126 // CHECKEXE-NEXT:       SHF_WRITE
 127 // CHECKEXE-NEXT:     ]
 128 // CHECKEXE-NEXT:     Address: 0x2303F0
 129 // CHECKEXE-NEXT:     Offset:
 130 // CHECKEXE-NEXT:     Size: 40
 131 // CHECKEXE-NEXT:     Link:
 132 // CHECKEXE-NEXT:     Info:
 133 // CHECKEXE-NEXT:     AddressAlignment: 8
 134
 135 // CHECKEXE: Relocations [
 136 // CHECKEXE-NEXT:   Section ({{.*}}) .rela.plt {
 137
 138 // &(.got.plt[3]) = 0x2303f0 + 3 * 8 = 0x230408
 139 // CHECKEXE-NEXT:     0x230408 R_AARCH64_JUMP_SLOT bar 0x0
 140
 141 // &(.got.plt[4]) = 0x2303f0 + 4 * 8 = 0x230410
 142 // CHECKEXE-NEXT:     0x230410 R_AARCH64_JUMP_SLOT weak 0x0
 143 // CHECKEXE-NEXT:   }
 144 // CHECKEXE-NEXT: ]
 145
 146 // DUMPEXE: Contents of section .got.plt:
 147 // .got.plt[0..2] = 0 (reserved)
 148 // .got.plt[3..4] = .plt = 0x40010
 149 // DUMPEXE-NEXT:  2303f0 00000000 00000000 00000000 00000000
 150 // DUMPEXE-NEXT:  230400 00000000 00000000 e0022100 00000000
 151 // DUMPEXE-NEXT:  230410 e0022100 00000000
 152
 153 // DISASMEXE: <_start>:
 154 // DISASMEXE-NEXT:    2102c8: b 0x2102d4 <foo>
 155 // DISASMEXE-NEXT:    2102cc: b 0x210300 <bar@plt>
 156 // DISASMEXE-NEXT:    2102d0: b 0x210310 <weak@plt>
 157
 158 // DISASMEXE: <foo>:
 159 // DISASMEXE-NEXT:    2102d4: nop
 160
 161 // DISASMEXE: Disassembly of section .plt:
 162 // DISASMEXE-EMPTY:
 163 // DISASMEXE-NEXT: <.plt>:
 164 // DISASMEXE-NEXT:    2102e0: stp     x16, x30, [sp, #-0x10]!
 165 // &(.got.plt[2]) = 0x2303f0 + 2 * 8 = 0x230400
 166 // DISASMEXE-NEXT:    2102e4: adrp    x16, 0x230000
 167 // DISASMEXE-NEXT:    2102e8: ldr     x17, [x16, #0x400]
 168 // DISASMEXE-NEXT:    2102ec: add     x16, x16, #0x400
 169 // DISASMEXE-NEXT:    2102f0: br      x17
 170 // DISASMEXE-NEXT:    2102f4: nop
 171 // DISASMEXE-NEXT:    2102f8: nop
 172 // DISASMEXE-NEXT:    2102fc: nop
 173
 174 // bar@plt
 175 // DISASMEXE-EMPTY:
 176 // DISASMEXE-NEXT:   <bar@plt>:
 177 // DISASMEXE-NEXT:    210300: adrp    x16, 0x230000
 178 // DISASMEXE-NEXT:    210304: ldr     x17, [x16, #0x408]
 179 // DISASMEXE-NEXT:    210308: add     x16, x16, #0x408
 180 // DISASMEXE-NEXT:    21030c: br      x17
 181
 182 // weak@plt
 183 // DISASMEXE-EMPTY:
 184 // DISASMEXE-NEXT:   <weak@plt>:
 185 // DISASMEXE-NEXT:    210310: adrp    x16, 0x230000
 186 // DISASMEXE-NEXT:    210314: ldr     x17, [x16, #0x410]
 187 // DISASMEXE-NEXT:    210318: add     x16, x16, #0x410
 188 // DISASMEXE-NEXT:    21031c: br      x17
 189
 190 .global _start,foo,bar
 191 .weak weak
 192 _start:
 193   b foo
 194   b bar
 195   b weak
 196
 197 .section .text2,"ax",@progbits
 198 foo:
 199   nop