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[ELF][test] Add dynamic-list-preempt2.s

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When producing a DSO, the isPreemptible property of a Defined with
default or protected visibility is affected by the --dynamic-list file,
but not by interposable symbols in other DSOs.

llvm-svn: 368649
This commit is contained in:
Fangrui Song 2019-08-13 05:08:46 +00:00
parent 70fdfed45f
commit 892cdc73be
1 changed files with 29 additions and 0 deletions
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29
lld/test/ELF/dynamic-list-preempt2.s Normal file
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# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
# RUN: ld.lld %t.o -shared -soname=t.so -o %t.so
# RUN: echo '{ foo; };' > %t.list
# RUN: ld.lld %t.o %t.so -shared --dynamic-list %t.list -o %t
# RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=SYM %s
# RUN: llvm-readobj -r %t | FileCheck --check-prefix=REL %s
## foo and bar interpose symbols in another DSO, so both are exported,
## even if --dynamic-list specifies only foo.
# SYM-DAG: bar
# SYM-DAG: foo
## bar is not specified in --dynamic-list, so it is not preemptable when
## producing a DSO, and its PLT does not have an associated JUMP_SLOT.
# REL: .rela.plt {
# REL-NEXT: R_X86_64_JUMP_SLOT foo 0x0
# REL-NEXT: }
.globl foo, bar
foo:
bar:
ret
call foo@PLT
call bar@PLT