lld/test/ELF/section-symbol-gap.s

   1 # REQUIRES: x86
   2 ## Test st_value of the STT_SECTION symbol equals the output section address,
   3 ## instead of the first input section address.
   4
   5 # RUN: split-file %s %t
   6 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/asm -o %t.o
   7
   8 # RUN: ld.lld --emit-relocs -T %t/lds %t.o -o %t.out
   9 # RUN: llvm-readelf -S -r -s %t.out | FileCheck %s --check-prefix=EXE
  10
  11 ## In -r mode, section addresses are zeros, hence the st_value fields of
  12 ## STT_SECTION are zeros.
  13 # RUN: ld.lld -r -T %t/lds %t.o -o %t.ro
  14 # RUN: llvm-readelf -S -r -s %t.ro | FileCheck %s --check-prefix=RO
  15
  16 # EXE:      [Nr] Name  Type      Address
  17 # EXE-NEXT: [ 0]
  18 # EXE-NEXT: [ 1] .text PROGBITS  0000000000000000
  19 # EXE-NEXT: [ 2] .bss  NOBITS    000000000000000a
  20
  21 # EXE:      R_X86_64_64 {{.*}} .bss + 1
  22
  23 # EXE:      Symbol table '.symtab' contains 4 entries:
  24 # EXE-NEXT: Num:    Value          Size Type    Bind   Vis       Ndx Name
  25 # EXE-NEXT:   0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT   UND
  26 # EXE-NEXT:   1: 000000000000000a     0 SECTION LOCAL  DEFAULT     2 .bss
  27 # EXE-NEXT:   2: 0000000000000000     0 SECTION LOCAL  DEFAULT     1 .text
  28 # EXE-NEXT:   3: 0000000000000000     0 SECTION LOCAL  DEFAULT     4 .comment
  29
  30 # RO:       [Nr] Name  Type      Address
  31 # RO-NEXT:  [ 0]
  32 # RO-NEXT:  [ 1] .bss  NOBITS    0000000000000000
  33
  34 # RO:       R_X86_64_64 {{.*}} .bss + 1
  35
  36 # RO:      Symbol table '.symtab' contains 3 entries:
  37 # RO-NEXT: Num:    Value          Size Type    Bind   Vis       Ndx Name
  38 # RO-NEXT:   0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT   UND
  39 # RO-NEXT:   1: 0000000000000000     0 SECTION LOCAL  DEFAULT     1 .bss
  40 # RO-NEXT:   2: 0000000000000000     0 SECTION LOCAL  DEFAULT     2 .text
  41
  42 #--- asm
  43 movabsq .bss, %rax
  44
  45 .bss
  46 .byte 0
  47
  48 #--- lds
  49 SECTIONS {
  50   .bss : { BYTE(0) *(.bss) }
  51 }