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llvm-project/lld/test/ELF/undefined-glob.s

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Add --undefined-glob which is an --undefined with wildcard pattern match This patch adds new command line option `--undefined-glob` to lld. That option is a variant of `--undefined` but accepts wildcard patterns so that all symbols that match with a given pattern are handled as if they were given by `-u`. `-u foo` is to force resolve symbol foo if foo is not a defined symbol and there's a static archive that contains a definition of symbol foo. Now, you can specify a wildcard pattern as an argument for `--undefined-glob`. So, if you want to include all JNI symbols (which start with "Java_"), you can do that by passing `--undefined-glob "Java_*"` to the linker, for example. In this patch, I use the same glob pattern matcher as the version script processor is using, so it does not only support `*` but also `?` and `[...]`. Differential Revision: https://reviews.llvm.org/D63244 llvm-svn: 363396
2019-06-14 22:00:59 +08:00
# REQUIRES: x86
# RUN: echo '.globl foo1; foo1:' | \
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %t1.o
# RUN: echo '.globl foo2; foo2:' | \
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %t2.o
# RUN: echo '.globl foo32; foo32:' | \
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %t3.o
# RUN: echo '.globl bar; bar:' | \
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %t4.o
# RUN: rm -f %t.a
# RUN: llvm-ar rcs %t.a %t1.o %t2.o %t3.o %t4.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
# RUN: ld.lld -o %t.exe %t.o %t.a
# RUN: llvm-readobj --symbols %t.exe | FileCheck --check-prefix=NO-OPT %s
# NO-OPT-NOT: foo
# NO-OPT-NOT: bar
# RUN: ld.lld -o %t.exe %t.o %t.a --undefined-glob foo1
# RUN: llvm-readobj --symbols %t.exe | FileCheck --check-prefix=FOO1 %s
# FOO1: foo1
# FOO1-NOT: foo2
# RUN: ld.lld -o %t.exe %t.o %t.a --undefined-glob 'foo*'
# RUN: llvm-readobj --symbols %t.exe | FileCheck --check-prefix=FOO-STAR %s
# FOO-STAR: foo1
# FOO-STAR: foo2
# FOO-STAR: foo32
# FOO-STAR-NOT: bar
# RUN: ld.lld -o %t.exe %t.o %t.a --undefined-glob 'foo?'
# RUN: llvm-readobj --symbols %t.exe | FileCheck --check-prefix=FOO-Q %s
# FOO-Q: foo1
# FOO-Q: foo2
# FOO-Q-NOT: foo32
# FOO-Q-NOT: bar
# RUN: ld.lld -o %t.exe %t.o %t.a --undefined-glob 'foo[13]*'
# RUN: llvm-readobj --symbols %t.exe | FileCheck --check-prefix=FOO13 %s
# FOO13: foo1
# FOO13-NOT: foo2
# FOO13: foo32
# FOO13-NOT: bar
# RUN: not ld.lld -o %t.exe %t.o %t.a --undefined-glob '[' 2>&1 | \
# RUN: FileCheck -check-prefix=BAD-PATTERN %s
# BAD-PATTERN: --undefined-glob: invalid glob pattern: [
.globl _start
_start: