lld/test/ELF/mips-gp-ext.s

   1 # REQUIRES: mips
   2 # Check that the linker use a value of _gp symbol defined
   3 # in a linker script to calculate GOT relocations.
   4
   5 # RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
   6
   7 # RUN: echo "SECTIONS { \
   8 # RUN:          .text : { *(.text) } \
   9 # RUN:          _gp = ABSOLUTE(.) + 0x100; \
  10 # RUN:          .got  : { *(.got) } }" > %t.rel.script
  11 # RUN: ld.lld -shared -o %t.rel.so --script %t.rel.script %t.o
  12 # RUN: llvm-objdump -s -t %t.rel.so | FileCheck --check-prefix=REL %s
  13
  14 # RUN: echo "SECTIONS { \
  15 # RUN:          .text : { *(.text) } \
  16 # RUN:          _gp = 0x100 + ABSOLUTE(.); \
  17 # RUN:          .got  : { *(.got) } }" > %t.rel.script
  18 # RUN: ld.lld -shared -o %t.rel.so --script %t.rel.script %t.o
  19 # RUN: llvm-objdump -s -t %t.rel.so | FileCheck --check-prefix=REL %s
  20
  21 # RUN: echo "SECTIONS { \
  22 # RUN:          .text : { *(.text) } \
  23 # RUN:          _gp = 0x200; \
  24 # RUN:          .got  : { *(.got) } }" > %t.abs.script
  25 # RUN: ld.lld -shared -o %t.abs.so --script %t.abs.script %t.o
  26 # RUN: llvm-objdump -s -t %t.abs.so | FileCheck --check-prefix=ABS %s
  27
  28 # REL: 000000e0 l       .text           00000000 foo
  29 # REL: 00000000 l       *ABS*           00000000 .hidden _gp_disp
  30 # REL: 000001ec l       *ABS*           00000000 .hidden _gp
  31
  32 # REL:      Contents of section .reginfo:
  33 # REL-NEXT:  0018 10000104 00000000 00000000 00000000
  34 # REL-NEXT:  0028 00000000 000001ec
  35 #                          ^-- _gp
  36
  37 # REL:      Contents of section .text:
  38 # REL-NEXT:  00e0 3c080000 2108010c 8f82ff1c
  39 #                 ^-- %hi(_gp_disp)
  40 #                          ^-- %lo(_gp_disp)
  41 #                                   ^-- 8 - (0x1ec - 0x100)
  42 #                                       G - (GP - .got)
  43
  44 # REL:      Contents of section .data:
  45 # REL-NEXT:  00f0 fffffef4
  46 #                 ^-- 0x30-0x1ec
  47 #                     foo - GP
  48
  49 # ABS: 000000e0 l       .text           00000000 foo
  50 # ABS: 00000000 l       *ABS*           00000000 .hidden _gp_disp
  51 # ABS: 00000200 l       *ABS*           00000000 .hidden _gp
  52
  53 # ABS:      Contents of section .reginfo:
  54 # ABS-NEXT:  0018 10000104 00000000 00000000 00000000
  55 # ABS-NEXT:  0028 00000000 00000200
  56 #                          ^-- _gp
  57
  58 # ABS:      Contents of section .text:
  59 # ABS-NEXT:  00e0 3c080000 21080120 8f82ff08
  60 #                 ^-- %hi(_gp_disp)
  61 #                          ^-- %lo(_gp_disp)
  62 #                                   ^-- 8 - (0x200 - 0x100)
  63 #                                       G - (GP - .got)
  64
  65 # ABS:      Contents of section .data:
  66 # ABS-NEXT:  00f0 fffffee0
  67 #                 ^-- 0xe0-0x200
  68 #                     foo - GP
  69
  70   .text
  71 foo:
  72   lui    $t0, %hi(_gp_disp)
  73   addi   $t0, $t0, %lo(_gp_disp)
  74   lw     $v0, %call16(bar)($gp)
  75
  76   .data
  77   .gpword foo