Files
clang-p2996/lld/test/ELF/weak-undef-rw.s
2025-06-11 20:00:45 -07:00

68 lines
2.3 KiB
ArmAsm

# 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: llvm-mc -filetype=obj -triple=x86_64 b.s -o b.o
# RUN: llvm-mc -filetype=obj -triple=x86_64 c.s -o c.o
# RUN: llvm-mc -filetype=obj -triple=x86_64 %S/Inputs/shared.s -o s.o
# RUN: ld.lld -shared s.o -o s.so
# RUN: ld.lld a.o -o a --export-dynamic
# RUN: llvm-readelf -r --hex-dump=.data a | FileCheck %s --check-prefix=STATIC
# RUN: ld.lld a.o s.so -o as
# RUN: llvm-readelf -r --hex-dump=.data as | FileCheck %s --check-prefix=STATIC
# RUN: ld.lld a.o -o a.pie -pie
# RUN: llvm-readelf -r --hex-dump=.data a.pie | FileCheck %s --check-prefix=STATIC
# RUN: ld.lld a.o -o a.so -shared
# RUN: llvm-readelf -r a.so | FileCheck %s --check-prefix=DYN
## gABI leaves the behavior of weak undefined references implementation defined.
## We choose to resolve them statically for static linking and produce dynamic relocations
## for dynamic linking (-shared or at least one input DSO).
##
## Note: Some ports of GNU ld support -z nodynamic-undefined-weak that we don't
## implement.
# STATIC: no relocations
# STATIC: Hex dump of section '.data':
# STATIC-NEXT: {{.*}} 00000000 00000000 03000000 00000000 .
# STATIC-EMPTY:
# DYN: Relocation section '.rela.dyn' {{.*}} contains 2
# DYN: R_X86_64_64 0000000000000000 foobar + 0{{$}}
# RUN: ld.lld a.o b.o -o ab -z undefs
# RUN: llvm-readelf -r -x .data ab | FileCheck %s --check-prefix=STATIC1
# RUN: ld.lld a.o b.o s.so -o abs -z undefs
# RUN: llvm-readelf -r -x .data abs | FileCheck %s --check-prefix=DYN1
# RUN: ld.lld a.o b.o -o abs.pie -pie -z undefs
# RUN: llvm-readelf -r -x .data abs.pie | FileCheck %s --check-prefix=STATIC1
# STATIC1: no relocations
# STATIC1: Hex dump of section '.data':
# STATIC1-NEXT: {{.*}} 00000000 00000000 03000000 00000000 .
# STATIC1-NEXT: {{.*}} 05000000 00000000 .
# STATIC1-EMPTY:
# DYN1: Relocation section '.rela.dyn' {{.*}} contains 1
# DYN1: Hex dump of section '.data':
# DYN1-NEXT: {{.*}} 00000000 00000000 03000000 00000000 .
# DYN1-NEXT: {{.*}} 00000000 00000000 .
# DYN1-EMPTY:
# RUN: ld.lld a.o b.o c.o -pie -z undefs 2>&1 | count 0
#--- a.s
.global _start
_start:
.data
.weak foobar
.quad foobar
.quad foobar+3
#--- b.s
.data
.quad undef+5
#--- c.s
call undef