lld/test/ELF/linkerscript/out-of-order.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-linux %s -o %t.o
   3 # RUN: echo "SECTIONS { .data 0x4000 : {*(.data)} .dynsym 0x2000 : {*(.dynsym)} .dynstr : {*(.dynstr)} }" > %t.script
   4 # RUN: ld.lld --hash-style=sysv -o %t.so --script %t.script %t.o -shared
   5 # RUN: llvm-objdump --section-headers %t.so | FileCheck %s
   6
   7 # Note: how the layout is done:
   8 #  we need to layout 2 segments, each contains sections:
   9 #    seg1: .data .dynamic
  10 #    seg2: .dynsym .dynstr .text .hash
  11 # for each segment, we start from the first section, regardless
  12 # whether it is an orphan or not (sections that are not listed in the
  13 # linkerscript are orphans):
  14 #   for seg1, we assign address: .data(0x4000), .dynamic(0x4008)
  15 #   for seg2, we assign address: .dynsym(0x2000), .dynstr(0x2018) ...
  16 # .dynsym is not an orphan, so we take address from script, we assign
  17 # .dynstr current address cursor, which is the end # of .dynsym and so
  18 # on for later sections.
  19
  20 # Also note, it is absolutely *illegal* to have section addresses of
  21 # the same segment in none-increasing order, authors of linker scripts
  22 # must take responsibility to make sure this does not happen.
  23
  24 # CHECK:      Sections:
  25 # CHECK-NEXT: Idx Name          Size     VMA              Type
  26 # CHECK-NEXT:   0               00000000 0000000000000000
  27 # CHECK-NEXT:   1 .dynamic      00000060 0000000000000000
  28 # CHECK-NEXT:   2 .data         00000008 0000000000004000
  29 # CHECK-NEXT:   3 .dynsym       00000018 0000000000002000
  30 # CHECK-NEXT:   4 .dynstr       00000001 0000000000002018
  31 # CHECK-NEXT:   5 .hash         00000010 000000000000201c
  32 # CHECK-NEXT:   6 .text         00000008 000000000000202c
  33
  34 .quad 0
  35 .data
  36 .quad 0
  37