lld/test/ELF/mips-tls-64-pic-local-variable.s

   1 # REQUIRES: mips
   2
   3 # MIPS TLS variables that are marked as local by a version script were
   4 # previously writing values to the GOT that caused runtime crashes. This
   5 # was happending when linking jemalloc_tsd.c in FreeBSD libc. Check that
   6 # we do the right thing now:
   7
   8 # RUN: llvm-mc -filetype=obj -triple=mips64-unknown-freebsd %s -o %t.o
   9 # RUN: echo "{ global: foo; local: *; };" > %t.script
  10 # RUN: echo "SECTIONS { \
  11 # RUN:         . = 0x10000; .text : { *(.text) } \
  12 # RUN:         . = 0x20000; .got  : { *(.got)  } \
  13 # RUN:       }" > %t.script1
  14 # RUN: ld.lld --version-script %t.script -script %t.script1 -shared %t.o -o %t.so
  15 # RUN: llvm-objdump --section=.got -s %t.so | FileCheck %s --check-prefix GOT
  16 # RUN: llvm-readobj -r %t.so | FileCheck %s -check-prefix RELOCS
  17
  18 # GOT:        Contents of section .got:
  19 # GOT-NEXT:   20000 00000000 00000000 80000000 00000000
  20 # GOT-NEXT:   20010 00000000 00000000 00000000 00000000
  21 # GOT-NEXT:   20020 ffffffff ffff8000
  22
  23 # RELOCS:      Section ({{.+}}) .rel.dyn {
  24 # RELOCS-NEXT:  0x20018 R_MIPS_TLS_DTPMOD64/R_MIPS_NONE/R_MIPS_NONE
  25 # RELOCS-NEXT: }
  26
  27 # Test case generated using:
  28 # clang -mcpu=mips4 -target mips64-unknown-freebsd12.0 \
  29 #       -fpic -O -G0 -EB -mabi=n64 -msoft-float -std=gnu99 -S %s -o %t.s
  30 # from the following source:
  31 #
  32 # _Thread_local int x;
  33 # int foo() { return x; }
  34 #
  35         .text
  36         .globl  foo
  37         .p2align        3
  38         .type   foo,@function
  39         .ent    foo
  40 foo:
  41         lui     $1, %hi(%neg(%gp_rel(foo)))
  42         daddu   $1, $1, $25
  43         daddiu  $gp, $1, %lo(%neg(%gp_rel(foo)))
  44         ld      $25, %call16(__tls_get_addr)($gp)
  45         jalr    $25
  46         daddiu  $4, $gp, %tlsgd(x)
  47         .end    foo
  48
  49         .type   x,@object
  50         .section        .tbss,"awT",@nobits
  51         .globl  x
  52         .p2align        2
  53 x:
  54         .4byte  0
  55         .size   x, 4