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# REQUIRES: x86
## Test relocations referencing symbols defined relative to sections discarded by /DISCARD/.
# RUN: rm -rf %t && split-file %s %t && cd %t
# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
# RUN: llvm-mc -filetype=obj -triple=x86_64 b.s -o b.o
# RUN: not ld.lld --threads=1 -T a.lds a.o b.o -z undefs -o /dev/null 2>&1 | FileCheck %s --check-prefix=LOCAL --implicit-check-not=error:
# RUN: not ld.lld --threads=1 -T a.lds a.o b.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=LOCAL,NONLOCAL --implicit-check-not=error:
# RUN: ld.lld -r -T a.lds a.o b.o -o a.ro 2>&1 | FileCheck %s --check-prefix=WARNING --implicit-check-not=warning:
# RUN: llvm-readelf -r -s a.ro | FileCheck %s --check-prefix=RELOC
# RUN: ld.lld -r --gc-sections -T a.lds a.o b.o -o a.gc.ro --no-fatal-warnings
# RUN: llvm-readelf -r -s a.gc.ro | FileCheck %s --check-prefix=RELOC-GC
# LOCAL: error: relocation refers to a discarded section: .aaa
# LOCAL-NEXT: >>> defined in a.o
# LOCAL-NEXT: >>> referenced by a.o:(.bbb+0x0)
# NONLOCAL: error: relocation refers to a symbol in a discarded section: global
# NONLOCAL-NEXT: >>> defined in a.o
# NONLOCAL-NEXT: >>> referenced by b.o:(.data+0x0)
# NONLOCAL: error: relocation refers to a symbol in a discarded section: weak
# NONLOCAL-NEXT: >>> defined in a.o
# NONLOCAL-NEXT: >>> referenced by b.o:(.data+0x8)
# NONLOCAL: error: relocation refers to a symbol in a discarded section: weakref1
# NONLOCAL-NEXT: >>> defined in a.o
# NONLOCAL-NEXT: >>> referenced by b.o:(.data+0x10)
# NONLOCAL: error: relocation refers to a symbol in a discarded section: weakref2
# NONLOCAL-NEXT: >>> defined in a.o
# NONLOCAL-NEXT: >>> referenced by b.o:(.data+0x18)
# WARNING: warning: relocation refers to a discarded section: .aaa
# WARNING-NEXT: >>> referenced by a.o:(.rela.bbb+0x0)
## GNU ld reports "defined in discarded secion" errors even in -r mode.
## We set the symbol index to 0.
# RELOC: Relocation section '.rela.bbb' at offset {{.*}} contains 1 entries:
# RELOC-NEXT: Offset Info Type Symbol's Value Symbol's Name + Addend
# RELOC-NEXT: 0000000000000000 0000000000000000 R_X86_64_NONE 0
# RELOC-EMPTY:
# RELOC-NEXT: Relocation section '.rela.data' at offset {{.*}} contains 4 entries:
# RELOC-NEXT: Offset Info Type Symbol's Value Symbol's Name + Addend
# RELOC-NEXT: 0000000000000000 0000000000000001 R_X86_64_64 0
# RELOC-NEXT: 0000000000000008 0000000000000001 R_X86_64_64 0
# RELOC-NEXT: 0000000000000010 0000000000000001 R_X86_64_64 0
# RELOC-NEXT: 0000000000000018 0000000000000001 R_X86_64_64 0
# RELOC: Num: Value Size Type Bind Vis Ndx Name
# RELOC-NEXT: 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
# RELOC-NEXT: 1: 0000000000000000 0 SECTION LOCAL DEFAULT 1 .text
# RELOC-NEXT: 2: 0000000000000000 0 SECTION LOCAL DEFAULT 2 .bbb
# RELOC-NEXT: 3: 0000000000000000 0 SECTION LOCAL DEFAULT 4 .data
# RELOC-NEXT: 4: 0000000000000000 0 NOTYPE GLOBAL DEFAULT 1 _start
# RELOC-EMPTY:
# RELOC-GC: There are no relocations in this file.
#--- a.s
.globl _start
_start:
.section .aaa,"a"
.globl global, weakref1, unused
.weak weak, weakref2
global:
weak:
weakref1:
weakref2:
## Eliminate `unused` just like GC discarded definitions.
## Linux kernel's CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y configuration expects
## that the unreferenced `unused` is not emitted to .symtab.
unused:
.quad 0
.section .bbb,"aw"
.quad .aaa
#--- b.s
.weak weakref1, weakref2
.section .data,"aw"
.quad global
.quad weak
.quad weakref1
.quad weakref2
#--- a.lds
SECTIONS { /DISCARD/ : { *(.aaa) } }
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