lld/test/ELF/relocatable-many-sections.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o %t.o
   3 # RUN: ld.lld -r %t.o -o %t
   4
   5 ## Check we are able to link against relocatable file produced.
   6 # RUN: ld.lld %t -o %t.out
   7
   8 ## Check we emit a valid ELF header when
   9 ## sections amount is greater than SHN_LORESERVE.
  10 # RUN: llvm-readobj --file-headers %t | FileCheck %s --check-prefix=HDR
  11 # HDR:      ElfHeader {
  12 # HDR:        SectionHeaderCount: 0 (65544)
  13 # HDR-NEXT:   StringTableSectionIndex: 65535 (65542)
  14
  15 ## Check that:
  16 ## 1) 65541 is the index of .shstrtab section.
  17 ## 2) .symtab_shndx is linked with .symtab.
  18 ## 3) .symtab_shndx entry size and alignment == 4.
  19 ## 4) .symtab_shndx has size equal to
  20 ##    (sizeof(.symtab) / entsize(.symtab)) * entsize(.symtab_shndx) = 0x4 * 0x180078 / 0x18 == 0x040014
  21
  22 # RUN: llvm-readelf -S -s %t | FileCheck %s
  23 #        [Nr] Name              Type            Address          Off    Size   ES Flg Lk Inf Al
  24 # CHECK: [65539] .note.GNU-stack PROGBITS       0000000000000000 000040 000000 00      0   0  1
  25 # CHECK: [65540] .symtab        SYMTAB          0000000000000000 000040 180078 18     65543 65539  8
  26 # CHECK: [65541] .symtab_shndx  SYMTAB SECTION INDICES 0000000000000000 1800b8 040014 04     65540   0  4
  27 # CHECK: [65542] .shstrtab      STRTAB          0000000000000000 1c00cc 0f0044 00      0   0  1
  28 # CHECK: [65543] .strtab        STRTAB          0000000000000000 2b0110 00000c 00      0   0  1
  29
  30 # 5) Check we are able to represent symbol foo with section (.bar) index  > 0xFF00 (SHN_LORESERVE).
  31 # CHECK: GLOBAL DEFAULT  65538 foo
  32
  33 .macro gen_sections4 x
  34   .section a\x
  35   .section b\x
  36   .section c\x
  37   .section d\x
  38 .endm
  39
  40 .macro gen_sections8 x
  41   gen_sections4 a\x
  42   gen_sections4 b\x
  43 .endm
  44
  45 .macro gen_sections16 x
  46   gen_sections8 a\x
  47   gen_sections8 b\x
  48 .endm
  49
  50 .macro gen_sections32 x
  51   gen_sections16 a\x
  52   gen_sections16 b\x
  53 .endm
  54
  55 .macro gen_sections64 x
  56   gen_sections32 a\x
  57   gen_sections32 b\x
  58 .endm
  59
  60 .macro gen_sections128 x
  61   gen_sections64 a\x
  62   gen_sections64 b\x
  63 .endm
  64
  65 .macro gen_sections256 x
  66   gen_sections128 a\x
  67   gen_sections128 b\x
  68 .endm
  69
  70 .macro gen_sections512 x
  71   gen_sections256 a\x
  72   gen_sections256 b\x
  73 .endm
  74
  75 .macro gen_sections1024 x
  76   gen_sections512 a\x
  77   gen_sections512 b\x
  78 .endm
  79
  80 .macro gen_sections2048 x
  81   gen_sections1024 a\x
  82   gen_sections1024 b\x
  83 .endm
  84
  85 .macro gen_sections4096 x
  86   gen_sections2048 a\x
  87   gen_sections2048 b\x
  88 .endm
  89
  90 .macro gen_sections8192 x
  91   gen_sections4096 a\x
  92   gen_sections4096 b\x
  93 .endm
  94
  95 .macro gen_sections16384 x
  96   gen_sections8192 a\x
  97   gen_sections8192 b\x
  98 .endm
  99
 100 gen_sections16384 a
 101 gen_sections16384 b
 102 gen_sections16384 c
 103 gen_sections16384 d
 104
 105 .section .bar
 106 .global foo
 107 foo:
 108
 109 .section .text, "ax"
 110 .global _start
 111 _start: