lld/test/ELF/linkerscript/sections-padding.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
   3
   4 ## Check that padding value works:
   5 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x1122 }" > %t.script
   6 # RUN: ld.lld -o %t.out --script %t.script %t
   7 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES %s
   8 # YES: 66000011 22000011 22000011 22000011
   9
  10 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =(0x1100+0x22) }" > %t.script
  11 # RUN: ld.lld -o %t.out --script %t.script %t
  12 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES2 %s
  13 # YES2: 66000011 22000011 22000011 22000011
  14
  15 ## Confirming that address was correct:
  16 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x99887766 }" > %t.script
  17 # RUN: ld.lld -o %t.out --script %t.script %t
  18 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES3 %s
  19 # YES3: 66998877 66998877 66998877 66998877
  20
  21 ## Default padding value is 0x00:
  22 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } }" > %t.script
  23 # RUN: ld.lld -o %t.out --script %t.script %t
  24 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=NO %s
  25 # NO: 66000000 00000000 00000000 00000000
  26
  27 ## Decimal value.
  28 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =777 }" > %t.script
  29 # RUN: ld.lld -o %t.out --script %t.script %t
  30 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=DEC %s
  31 # DEC: 66000003 09000003 09000003 09000003
  32
  33 ## Invalid hex value:
  34 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x99XX }" > %t.script
  35 # RUN: not ld.lld -o /dev/null --script %t.script %t 2>&1 \
  36 # RUN:   | FileCheck --check-prefix=ERR2 %s --implicit-check-not=error:
  37 # ERR2:      error: {{.*}}.script:1: malformed number: 0x99XX
  38 # ERR2-NEXT: >>> SECTIONS { .mysec : { *(.mysec*) } =0x99XX }
  39 # ERR2-NEXT: >>>                                     ^
  40 # ERR2-EMPTY:
  41 # ERR2-NEXT: error: {{.*}}.script:1: symbol not found: 0x99XX
  42
  43 ## Check case with space between '=' and a value:
  44 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } = 0x1122 }" > %t.script
  45 # RUN: ld.lld -o %t.out --script %t.script %t
  46 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES %s
  47
  48 ## Check case with optional comma following output section command:
  49 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x1122, .a : { *(.a*) } }" > %t.script
  50 # RUN: ld.lld -o %t.out --script %t.script %t
  51 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES %s
  52
  53 ## Check we can use an artbitrary expression as a filler.
  54 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } = ((0x11<<8) | 0x22) }" > %t.script
  55 # RUN: ld.lld -o %t.out --script %t.script %t
  56 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES %s
  57
  58 ## Check case with space between '=' and expression:
  59 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =((0x11 << 8) | 0x22) }" > %t.script
  60 # RUN: ld.lld -o %t.out --script %t.script %t
  61 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES %s
  62
  63 ## Check we report an error if expression value is larger than 32-bits.
  64 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =(0x11 << 32) }" > %t.script
  65 # RUN: not ld.lld -o /dev/null --script %t.script %t 2>&1 | FileCheck --check-prefix=ERR3 %s --implicit-check-not=error:
  66 # ERR3: error: {{.*}}.script:1: filler expression result does not fit 32-bit: 0x1100000000
  67
  68 ## Check we report an error if an expression use a symbol.
  69 # RUN: echo "SECTIONS { foo = 0x11; .mysec : { *(.mysec*) } = foo }" > %t.script
  70 # RUN: not ld.lld -o /dev/null %t --script %t.script 2>&1 | FileCheck --check-prefix=ERR4 %s --implicit-check-not=error:
  71 # ERR4: error: {{.*}}.script:1: symbol not found: foo
  72
  73 ## Check we are able to parse scripts where "/DISCARD/" follows a section fill expression.
  74 # RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x1122 /DISCARD/ : { *(.text) } }" > %t.script
  75 # RUN: ld.lld -o %t.out --script %t.script %t
  76 # RUN: llvm-objdump -s %t.out | FileCheck --check-prefix=YES %s
  77
  78 .section        .mysec.1,"a"
  79 .align  16
  80 .byte   0x66
  81
  82 .section        .mysec.2,"a"
  83 .align  16
  84 .byte   0x66
  85
  86 .globl _start
  87 _start:
  88  nop