lld/test/ELF/linkerscript/subalign.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
   3
   4 # RUN: echo "SECTIONS { .aaa : { *(.aaa.*) } }" > %t1.script
   5 # RUN: ld.lld -o %t1 --script %t1.script %t1.o
   6 # RUN: llvm-objdump -s %t1 | FileCheck --check-prefix=NOALIGN %s
   7 # NOALIGN:      Contents of section .aaa:
   8 # NOALIGN-NEXT:   01000000 00000000 00000000 00000000
   9 # NOALIGN-NEXT:   00000000 00000000 00000000 00000000
  10 # NOALIGN-NEXT:   02000000 00000000 00000000 00000000
  11 # NOALIGN-NEXT:   00000000 00000000 00000000 00000000
  12 # NOALIGN-NEXT:   03000000 00000000 00000000 00000000
  13 # NOALIGN-NEXT:   00000000 00000000 00000000 00000000
  14 # NOALIGN-NEXT:   00000000 00000000 00000000 00000000
  15 # NOALIGN-NEXT:   00000000 00000000 00000000 00000000
  16 # NOALIGN-NEXT:   04000000 00000000
  17
  18 # RUN: echo "SECTIONS { .aaa : SUBALIGN(1) { *(.aaa.*) } }" > %t2.script
  19 # RUN: ld.lld -o %t2 --script %t2.script %t1.o
  20 # RUN: llvm-objdump -s %t2 | FileCheck --check-prefix=SUBALIGN %s
  21 # SUBALIGN: Contents of section .aaa:
  22 # SUBALIGN:   01000000 00000000 02000000 00000000
  23 # SUBALIGN:   03000000 00000000 04000000 00000000
  24
  25 ## Test we do not assert or crash when dot(.) is used inside SUBALIGN.
  26 ## Value of dot is undefined. Some versions of ld.bfd do not allow to use dot
  27 ## in such expressions.
  28 # RUN: echo "SECTIONS { . = 0x32; .aaa : SUBALIGN(.) { *(.aaa*) } }" > %t3.script
  29 # RUN: not ld.lld %t1.o --script %t3.script -o /dev/null 2>&1 | FileCheck --check-prefix=ERR1 %s
  30 # ERR1: {{.*}}.script:1: unable to get location counter value
  31
  32 ## Test we are able to link with zero alignment, this is consistent with bfd 2.26.1.
  33 # RUN: echo "SECTIONS { .aaa : SUBALIGN(0) { *(.aaa*) } }" > %t4.script
  34 # RUN: ld.lld %t1.o --script %t4.script -o %t4
  35 # RUN: llvm-objdump -s %t4 | FileCheck --check-prefix=SUBALIGN %s
  36
  37 ## Test we fail gracefully when alignment value is not a power of 2.
  38 # RUN: echo "SECTIONS { .aaa : SUBALIGN(3) { *(.aaa*) } }" > %t5.script
  39 # RUN: not ld.lld %t1.o --script %t5.script -o /dev/null 2>&1 | FileCheck --check-prefix=ERR2 %s
  40 # ERR2: {{.*}}.script:1: alignment must be power of 2
  41
  42 .global _start
  43 _start:
  44  nop
  45
  46 .section .aaa.1, "a"
  47 .align 16
  48 .quad 1
  49
  50 .section .aaa.2, "a"
  51 .align 32
  52 .quad 2
  53
  54 .section .aaa.3, "a"
  55 .align 64
  56 .quad 3
  57
  58 .section .aaa.4, "a"
  59 .align 128
  60 .quad 4