lld/test/ELF/linkerscript/fill-exec-sections.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
   3
   4 ## Check that padding of executable sections are filled with trap bytes if not
   5 ## otherwise specified in the script.
   6 # RUN: echo "SECTIONS { .exec : { *(.exec*) } }" > %t.script
   7 # RUN: ld.lld -o %t.out --script %t.script %t
   8 # RUN: llvm-objdump -s %t.out | FileCheck %s --check-prefix=EXEC
   9 # EXEC:      0000 66cccccc cccccccc cccccccc cccccccc
  10 # EXEC-NEXT: 0010 66
  11
  12 ## Check that a fill expression or command overrides the default filler...
  13 # RUN: echo "SECTIONS { .exec : { *(.exec*) }=0x11223344 }" > %t2.script
  14 # RUN: ld.lld -o %t2.out --script %t2.script %t
  15 # RUN: llvm-objdump -s %t2.out | FileCheck %s --check-prefix=OVERRIDE
  16 # RUN: echo "SECTIONS { .exec : { FILL(0x11223344); *(.exec*) } }" > %t3.script
  17 # RUN: ld.lld -o %t3.out --script %t3.script %t
  18 # RUN: llvm-objdump -s %t3.out | FileCheck %s --check-prefix=OVERRIDE
  19 # OVERRIDE:      Contents of section .exec:
  20 # OVERRIDE-NEXT:  0000 66112233 44112233 44112233 44112233
  21 # OVERRIDE-NEXT:  0010 66
  22
  23 ## ...even for a value of zero.
  24 # RUN: echo "SECTIONS { .exec : { *(.exec*) }=0x00000000 }" > %t4.script
  25 # RUN: ld.lld -o %t4.out --script %t4.script %t
  26 # RUN: llvm-objdump -s %t4.out | FileCheck %s --check-prefix=ZERO
  27 # RUN: echo "SECTIONS { .exec : { FILL(0x00000000); *(.exec*) } }" > %t5.script
  28 # RUN: ld.lld -o %t5.out --script %t5.script %t
  29 # RUN: llvm-objdump -s %t5.out | FileCheck %s --check-prefix=ZERO
  30 # ZERO:      Contents of section .exec:
  31 # ZERO-NEXT:  0000 66000000 00000000 00000000 00000000
  32 # ZERO-NEXT:  0010 66
  33
  34 .section        .exec.1,"ax"
  35 .align  16
  36 .byte   0x66
  37
  38 .section        .exec.2,"ax"
  39 .align  16
  40 .byte   0x66