lld/test/ELF/linkerscript/symbol-reserved.s

   1 # REQUIRES: x86
   2
   3 ## Test linker synthesized symbols (e.g. __ehdr_start, _end) can be used in linker scripts.
   4
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
   6 # RUN: echo "PROVIDE_HIDDEN(newsym = __ehdr_start + 5);" > %t.script
   7 # RUN: ld.lld -o %t1 %t.script %t
   8 # RUN: llvm-objdump -t %t1 | FileCheck %s
   9
  10 # CHECK: 0000000000200005 l .text 0000000000000000 .hidden newsym
  11
  12 # RUN: ld.lld -o %t1.so %t.script %t -shared
  13 # RUN: llvm-objdump -t %t1.so | FileCheck --check-prefix=SHARED %s
  14
  15 # SHARED: 0000000000000005 l .dynsym 0000000000000000 .hidden newsym
  16
  17 # RUN: echo "PROVIDE_HIDDEN(newsym = ALIGN(__ehdr_start, CONSTANT(MAXPAGESIZE)) + 5);" > %t.script
  18 # RUN: ld.lld -o %t1 %t.script %t
  19 # RUN: llvm-objdump -t %t1 | FileCheck --check-prefix=ALIGNED %s
  20
  21 # ALIGNED: 0000000000200005 l .text 0000000000000000 .hidden newsym
  22
  23 # RUN: echo "PROVIDE_HIDDEN(newsym = ALIGN(3, 8) + 10);" > %t.script
  24 # RUN: ld.lld -o %t1 %t.script %t
  25 # RUN: llvm-objdump -t %t1 | FileCheck --check-prefix=ALIGN-ADD %s
  26 # ALIGN-ADD: 0000000000000012 l *ABS* 0000000000000000 .hidden newsym
  27
  28 # RUN: echo "PROVIDE_HIDDEN(newsym = ALIGN(11, 8) - 10);" > %t.script
  29 # RUN: ld.lld -o %t1 %t.script %t
  30 # RUN: llvm-objdump -t %t1 | FileCheck --check-prefix=ALIGN-SUB %s
  31 # ALIGN-SUB: 0000000000000006 l *ABS* 0000000000000000 .hidden newsym
  32
  33 # RUN: echo "PROVIDE_HIDDEN(newsym = ALIGN(_end, CONSTANT(MAXPAGESIZE)) + 5);" > %t.script
  34 # RUN: ld.lld -o %t1 %t %t.script
  35 # RUN: llvm-objdump -t %t1 | FileCheck --check-prefix=RELATIVE %s
  36 # RELATIVE: 0000000000202005 l .text 0000000000000000 .hidden newsym
  37 # RELATIVE: 0000000000201127 g .text 0000000000000000 _end
  38
  39 # RUN: echo "PROVIDE_HIDDEN(newsym = ALIGN(_end, CONSTANT(MAXPAGESIZE)) + 5);" > %t.script
  40 # RUN: ld.lld -o %t1 --script %p/Inputs/symbol-reserved.script %t %t.script
  41 # RUN: llvm-objdump -t %t1 | FileCheck --check-prefix=RELATIVE-ADD %s
  42 # RELATIVE-ADD: 0000000000001005 l .text 0000000000000000 .hidden newsym
  43 # RELATIVE-ADD: 0000000000000007 l .text 0000000000000000 .hidden _end
  44
  45 # RUN: echo "PROVIDE_HIDDEN(newsym = ALIGN(_end, CONSTANT(MAXPAGESIZE)) - 5);" > %t.script
  46 # RUN: ld.lld -o %t1 --script %p/Inputs/symbol-reserved.script %t %t.script
  47 # RUN: llvm-objdump -t %t1 | FileCheck --check-prefix=RELATIVE-SUB %s
  48 # RELATIVE-SUB: 0000000000000ffb l .text 0000000000000000 .hidden newsym
  49 # RELATIVE-SUB: 0000000000000007 l .text 0000000000000000 .hidden _end
  50
  51 .global _start
  52 _start:
  53   lea newsym(%rip),%rax