test/ELF/mips-got16.s

   1 # Check R_MIPS_GOT16 relocation calculation.
   2
   3 # RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
   4 # RUN: ld.lld %t.o -shared -o %t.so
   5 # RUN: llvm-objdump -d -t %t.so | FileCheck %s
   6 # RUN: llvm-readobj -r -mips-plt-got %t.so | FileCheck -check-prefix=GOT %s
   7
   8 # REQUIRES: mips
   9
  10 # CHECK:      Disassembly of section .text:
  11 # CHECK-NEXT: __start:
  12 # CHECK-NEXT:    10000:       8f 88 80 18     lw      $8, -32744($gp)
  13 # CHECK-NEXT:    10004:       21 08 00 2c     addi    $8, $8, 44
  14 # CHECK-NEXT:    10008:       8f 88 80 24     lw      $8, -32732($gp)
  15 # CHECK-NEXT:    1000c:       21 08 90 00     addi    $8, $8, -28672
  16 # CHECK-NEXT:    10010:       8f 88 80 28     lw      $8, -32728($gp)
  17 # CHECK-NEXT:    10014:       21 08 90 04     addi    $8, $8, -28668
  18 # CHECK-NEXT:    10018:       8f 88 80 28     lw      $8, -32728($gp)
  19 # CHECK-NEXT:    1001c:       21 08 10 04     addi    $8, $8, 4100
  20 # CHECK-NEXT:    10020:       8f 88 80 30     lw      $8, -32720($gp)
  21 # CHECK-NEXT:    10024:       21 08 10 08     addi    $8, $8, 4104
  22 # CHECK-NEXT:    10028:       8f 88 80 34     lw      $8, -32716($gp)
  23 #
  24 # CHECK: SYMBOL TABLE:
  25 # CHECK: 00051008         .data           00000000 .hidden bar
  26 # CHECK: 00000000         *UND*           00000000 foo
  27
  28 # GOT:      Relocations [
  29 # GOT-NEXT: ]
  30
  31 # GOT:      Primary GOT {
  32 # GOT-NEXT:   Canonical gp value: 0x27FF0
  33 # GOT-NEXT:   Reserved entries [
  34 # GOT-NEXT:     Entry {
  35 # GOT-NEXT:       Address: 0x20000
  36 # GOT-NEXT:       Access: -32752
  37 # GOT-NEXT:       Initial: 0x0
  38 # GOT-NEXT:       Purpose: Lazy resolver
  39 # GOT-NEXT:     }
  40 # GOT-NEXT:     Entry {
  41 # GOT-NEXT:       Address: 0x20004
  42 # GOT-NEXT:       Access: -32748
  43 # GOT-NEXT:       Initial: 0x80000000
  44 # GOT-NEXT:       Purpose: Module pointer (GNU extension)
  45 # GOT-NEXT:     }
  46 # GOT-NEXT:   ]
  47 # GOT-NEXT:   Local entries [
  48 # GOT-NEXT:     Entry {
  49 # GOT-NEXT:       Address: 0x20008
  50 # GOT-NEXT:       Access: -32744
  51 # GOT-NEXT:       Initial: 0x10000
  52 #                          ^-- (0x1002c + 0x8000) & ~0xffff
  53 # GOT-NEXT:     }
  54 # GOT-NEXT:     Entry {
  55 # GOT-NEXT:       Address: 0x2000C
  56 # GOT-NEXT:       Access: -32740
  57 # GOT-NEXT:       Initial: 0x20000
  58 #                          ^-- redundant unused entry
  59 # GOT-NEXT:     }
  60 # GOT-NEXT:     Entry {
  61 # GOT-NEXT:       Address: 0x20010
  62 # GOT-NEXT:       Access: -32736
  63 # GOT-NEXT:       Initial: 0x30000
  64 #                          ^-- redundant unused entry
  65 # GOT-NEXT:     }
  66 # GOT-NEXT:     Entry {
  67 # GOT-NEXT:       Address: 0x20014
  68 # GOT-NEXT:       Access: -32732
  69 # GOT-NEXT:       Initial: 0x40000
  70 #                          ^-- (0x39000 + 0x8000) & ~0xffff
  71 # GOT-NEXT:     }
  72 # GOT-NEXT:     Entry {
  73 # GOT-NEXT:       Address: 0x20018
  74 # GOT-NEXT:       Access: -32728
  75 # GOT-NEXT:       Initial: 0x50000
  76 #                          ^-- (0x39000 + 0x10004 + 0x8000) & ~0xffff
  77 #                          ^-- (0x39000 + 0x18004 + 0x8000) & ~0xffff
  78 # GOT-NEXT:     }
  79 # GOT-NEXT:     Entry {
  80 # GOT-NEXT:       Address: 0x2001C
  81 # GOT-NEXT:       Access: -32724
  82 # GOT-NEXT:       Initial: 0x60000
  83 #                          ^-- redundant unused entry
  84 # GOT-NEXT:     }
  85 # GOT-NEXT:     Entry {
  86 # GOT-NEXT:       Address: 0x20020
  87 # GOT-NEXT:       Access: -32720
  88 # GOT-NEXT:       Initial: 0x51008
  89 #                          ^-- 'bar' address
  90 # GOT-NEXT:     }
  91 # GOT-NEXT:   ]
  92 # GOT-NEXT:   Global entries [
  93 # GOT-NEXT:     Entry {
  94 # GOT-NEXT:       Address: 0x20024
  95 # GOT-NEXT:       Access: -32716
  96 # GOT-NEXT:       Initial: 0x0
  97 # GOT-NEXT:       Value: 0x0
  98 # GOT-NEXT:       Type: None
  99 # GOT-NEXT:       Section: Undefined
 100 # GOT-NEXT:       Name: foo@
 101 # GOT-NEXT:     }
 102 # GOT-NEXT:   ]
 103 # GOT-NEXT:   Number of TLS and multi-GOT entries: 0
 104 # GOT-NEXT: }
 105
 106   .text
 107   .globl  __start
 108 __start:
 109   lw      $t0,%got($LC0)($gp)
 110   addi    $t0,$t0,%lo($LC0)
 111   lw      $t0,%got($LC1)($gp)
 112   addi    $t0,$t0,%lo($LC1)
 113   lw      $t0,%got($LC1+0x10004)($gp)
 114   addi    $t0,$t0,%lo($LC1+0x10004)
 115   lw      $t0,%got($LC1+0x18004)($gp)
 116   addi    $t0,$t0,%lo($LC1+0x18004)
 117   lw      $t0,%got(bar)($gp)
 118   addi    $t0,$t0,%lo(bar)
 119   lw      $t0,%got(foo)($gp)
 120 $LC0:
 121   nop
 122
 123   .data
 124   .space 0x9000
 125 $LC1:
 126   .word 0
 127   .space 0x18000
 128   .word 0
 129 .global bar
 130 .hidden bar
 131 bar:
 132   .word 0