lld/test/ELF/linkerscript/overlay-keep.test

# REQUIRES: x86
# RUN: rm -rf %t && split-file %s %t && cd %t
# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
# RUN: ld.lld a.o --gc-sections --script nokeep.t -o a
# RUN: llvm-objdump --section-headers a | FileCheck --check-prefix=NOKEEP %s
# RUN: ld.lld a.o --gc-sections --script keep.t -o a
# RUN: llvm-objdump --section-headers a | FileCheck --check-prefix=KEEP %s

# NOKEEP:      Sections:
# NOKEEP-NEXT: Idx Name          Size
# NOKEEP-NEXT:   0               00000000
# NOKEEP-NEXT:   1 .text         00000004
# NOKEEP-NEXT:   2 .keep1        00000000

# KEEP:      Sections:
# KEEP-NEXT: Idx Name          Size
# KEEP-NEXT:   0               00000000
# KEEP-NEXT:   1 .text         00000004
# KEEP-NEXT:   2 .keep1        00000004
# KEEP-NEXT:   3 .keep2        00000004

#--- a.s
.global _start
_start:
 .long 1

.section .keep1, "a"
keep1:
 .long 2

.section .keep2, "a"
keep2:
 .long 3

#--- nokeep.t
SECTIONS {
  .text : { *(.text) }
  OVERLAY 0x1000 : AT ( 0x4000 ) {
    .keep1 { *(.keep1) }
    .keep2 { *(.keep2) }
  }
}

#--- keep.t
SECTIONS {
  .text : { *(.text) }
  OVERLAY 0x1000 : AT ( 0x4000 ) {
    .keep1 { KEEP(*(.keep1)) }
    .keep2 { KEEP(*(.keep2)) }
  }
}