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

# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o %t.o
# RUN: ld.lld -r %t.o -o %t

## Check we are able to link against relocatable file produced.
# RUN: ld.lld %t -o %t.out

## Check we emit a valid ELF header when
## sections amount is greater than SHN_LORESERVE.
# RUN: llvm-readobj -file-headers %t | FileCheck %s --check-prefix=HDR
# HDR:      ElfHeader {
# HDR:        SectionHeaderCount: 0 (65543)
# HDR-NEXT:   StringTableSectionIndex: 65535 (65541)

## Check that:
## 1) 65541 is the index of .shstrtab section.
## 2) .symtab_shndxr is linked with .symtab.
## 3) .symtab_shndxr entry size and alignment == 4.
## 4) .symtab_shndxr has size equal to
##    (sizeof(.symtab) / entsize(.symtab)) * entsize(.symtab_shndxr) = 0x4 * 0x180048 / 0x18 == 0x04000c
# RUN: llvm-readelf -sections -symbols %t | FileCheck %s
##              [Nr]    Name           Type                   Address          Off    Size   ES Flg  Lk    Inf    Al
# CHECK:        [65538] .bar
# CHECK-NEXT:   [65539] .symtab        SYMTAB                 0000000000000000 000040 180078 18      65542 65539  8
# CHECK-NEXT:   [65540] .symtab_shndxr SYMTAB SECTION INDICES 0000000000000000 1800b8 040014 04      65539 0      4
# CHECK-NEXT:   [65541] .shstrtab      STRTAB                 0000000000000000 1c00cc 0f0035 00      0     0      1
# CHECK-NEXT:   [65542] .strtab        STRTAB                 0000000000000000 2b0101 00000c 00
# 5) Check we are able to represent symbol foo with section (.bar) index  > 0xFF00 (SHN_LORESERVE).
# CHECK: GLOBAL DEFAULT  65538 foo

.macro gen_sections4 x
  .section a\x
  .section b\x
  .section c\x
  .section d\x
.endm

.macro gen_sections8 x
  gen_sections4 a\x
  gen_sections4 b\x
.endm

.macro gen_sections16 x
  gen_sections8 a\x
  gen_sections8 b\x
.endm

.macro gen_sections32 x
  gen_sections16 a\x
  gen_sections16 b\x
.endm

.macro gen_sections64 x
  gen_sections32 a\x
  gen_sections32 b\x
.endm

.macro gen_sections128 x
  gen_sections64 a\x
  gen_sections64 b\x
.endm

.macro gen_sections256 x
  gen_sections128 a\x
  gen_sections128 b\x
.endm

.macro gen_sections512 x
  gen_sections256 a\x
  gen_sections256 b\x
.endm

.macro gen_sections1024 x
  gen_sections512 a\x
  gen_sections512 b\x
.endm

.macro gen_sections2048 x
  gen_sections1024 a\x
  gen_sections1024 b\x
.endm

.macro gen_sections4096 x
  gen_sections2048 a\x
  gen_sections2048 b\x
.endm

.macro gen_sections8192 x
  gen_sections4096 a\x
  gen_sections4096 b\x
.endm

.macro gen_sections16384 x
  gen_sections8192 a\x
  gen_sections8192 b\x
.endm

gen_sections16384 a
gen_sections16384 b
gen_sections16384 c
gen_sections16384 d

.section .bar
.global foo
foo:

.section .text, "ax"
.global _start
_start: