lld/test/ELF/linkerscript/non-alloc-segment.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
   3
   4 ################################################################################
   5 ## Test that non-alloc section .foo can be assigned to a segment. Check that
   6 ## the values of the offset and file size of this segment's PHDR are correct.
   7 ##
   8 ## This functionality allows non-alloc metadata, which is not required at
   9 ## run-time, to be added to a custom segment in a file. This metadata may be
  10 ## read/edited by tools/loader using the values of the offset and file size from
  11 ## the custom segment's PHDR. This is particularly important if section headers
  12 ## have been stripped.
  13 # RUN: echo "PHDRS {text PT_LOAD; foo 0x12345678;} \
  14 # RUN:       SECTIONS { \
  15 # RUN:           .text : {*(.text .text*)} :text \
  16 # RUN:           .foo : {*(.foo)} :foo \
  17 # RUN:       }" > %t.script
  18 # RUN: ld.lld -o %t --script %t.script %t.o
  19 # RUN: llvm-readelf -S -l %t | FileCheck %s
  20 # RUN: llvm-readobj -l %t | FileCheck --check-prefix=PHDR %s
  21
  22 # CHECK: Program Headers:
  23 # CHECK-NEXT:  Type
  24 # CHECK-NEXT:  LOAD
  25 # CHECK-NEXT:  <unknown>: 0x12345678
  26
  27 # CHECK:      Section to Segment mapping:
  28 # CHECK-NEXT:  Segment Sections...
  29 # CHECK-NEXT:   00     .text
  30 # CHECK-NEXT:   01     .foo
  31
  32 # PHDR:      Type: Unknown (0x12345678)
  33 # PHDR-NEXT: Offset: 0x1004
  34 # PHDR-NEXT: VirtualAddress
  35 # PHDR-NEXT: PhysicalAddress
  36 # PHDR-NEXT: FileSize: 4
  37
  38 .global _start
  39 _start:
  40  nop
  41
  42 .section .foo
  43  .align 4
  44  .long 0