lld/test/ELF/linkerscript/tbss.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
   3 # RUN: echo 'SECTIONS { \
   4 # RUN:   . = SIZEOF_HEADERS; \
   5 # RUN:   .text : { *(.text) } \
   6 # RUN:   .tbss : { __tbss_start = .; *(.tbss) __tbss_end = .; } \
   7 # RUN:   second_tbss : { second_tbss_start = .; *(second_tbss) second_tbss_end = .; } \
   8 # RUN:   bar : { *(bar) } \
   9 # RUN: }' > %t.lds
  10 # RUN: ld.lld -T %t.lds %t.o -o %t1
  11 # RUN: llvm-readelf -S -s %t1 | FileCheck %s
  12
  13 # RUN: echo 'PHDRS { text PT_LOAD; }' > %th.lds
  14 # RUN: cat %th.lds %t.lds > %t2.lds
  15 # RUN: ld.lld -T %t.lds %t.o -o %t2
  16 # RUN: llvm-readelf -S -s %t2 | FileCheck %s
  17
  18 ## Test that a tbss section doesn't affect the start address of the next section.
  19
  20 # CHECK: Name        Type     Address              Off                Size   ES Flg
  21 # CHECK: .tbss       NOBITS   [[#%x,ADDR:]]        [[#%x,OFF:]]       000004 00 WAT
  22 # CHECK: second_tbss NOBITS   {{0+}}[[#%x,ADDR+4]] {{0+}}[[#%x,OFF]]  000001 00 WAT
  23 # CHECK: bar         PROGBITS {{0+}}[[#%x,ADDR]]   {{0+}}[[#%x,OFF]]  000004 00  WA
  24
  25 ## Test that . in a tbss section represents the current location, even if the
  26 ## address will be reset.
  27
  28 # CHECK: Value                {{.*}} Name
  29 # CHECK: {{0+}}[[#%x,ADDR]]   {{.*}} __tbss_start
  30 # CHECK: {{0+}}[[#%x,ADDR+4]] {{.*}} __tbss_end
  31 # CHECK: {{0+}}[[#%x,ADDR+4]] {{.*}} second_tbss_start
  32 # CHECK: {{0+}}[[#%x,ADDR+5]] {{.*}} second_tbss_end
  33
  34 .globl _start
  35 _start:
  36   nop
  37
  38 .section .tbss,"awT",@nobits
  39   .long 0
  40 .section second_tbss,"awT",@nobits
  41   .byte 0
  42 .section bar, "aw"
  43   .long 0