forked from OSchip/llvm-project
46 lines
1.5 KiB
ArmAsm
46 lines
1.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: split-file %s %t.dir
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %t.dir/main.s -o %t.o
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# RUN: echo '.globl bar; bar: call __real_foo' | llvm-mc -filetype=obj -triple=x86_64 - -o %t1.o
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# RUN: ld.lld -shared -soname=t.so %t1.o -o %t.so
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## --no-allow-shlib-undefined errors because __real_foo is not defined.
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# RUN: not ld.lld %t.o %t.so -o /dev/null 2>&1 | FileCheck --check-prefix=ERR %s
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# ERR: {{.*}}.so: undefined reference to __real_foo [--no-allow-shlib-undefined]
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## --wrap=foo defines __real_foo.
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# RUN: ld.lld %t.o %t.so --wrap=foo -o %t
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# RUN: llvm-readelf --dyn-syms %t | FileCheck %s
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## The reference __real_foo from %t.so causes foo to be exported.
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## __wrap_foo is not used, thus not exported.
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# CHECK: Symbol table '.dynsym' contains 3 entries:
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# CHECK: NOTYPE LOCAL DEFAULT UND
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# CHECK-NEXT: NOTYPE GLOBAL DEFAULT UND bar
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# CHECK-NEXT: NOTYPE GLOBAL DEFAULT 6 foo
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %t.dir/wrap.s -o %twrap.o
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# RUN: ld.lld -shared --soname=fixed %twrap.o -o %twrap.so
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# RUN: ld.lld %t.o %twrap.so --wrap bar -o %t1
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# RUN: llvm-readelf --dyn-syms %t1 | FileCheck %s --check-prefix=DYNSYM
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# RUN: llvm-objdump -d %t1 | FileCheck %s --check-prefix=ASM
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# DYNSYM: Symbol table '.dynsym' contains 2 entries:
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# DYNSYM: NOTYPE LOCAL DEFAULT UND
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# DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap_bar
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# ASM: <_start>:
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# ASM-NEXT: callq {{.*}} <__wrap_bar@plt>
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#--- main.s
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.globl _start, foo
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_start:
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call bar
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foo:
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#--- wrap.s
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.globl __wrap_bar
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__wrap_bar:
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retq
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