derek.holloway
7502bf64a4
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81 lines
2.9 KiB
ArmAsm
81 lines
2.9 KiB
ArmAsm
# REQUIRES: x86
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# RUN: rm -rf %t && split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %t/main.s -o %t/main.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %t/call-foo.s -o %t/call-foo.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %t/bar.s -o %t/bar.o
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# RUN: ld.lld -shared -soname=t.so %t/bar.o -o %t/bar.so
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %t/wrap.s -o %t/wrap.o
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# RUN: ld.lld -shared --soname=fixed %t/wrap.o -o %t/wrap.so
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## foo is defined, then referenced in another object file.
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# RUN: ld.lld -shared %t/main.o %t/call-foo.o --wrap foo -o %t1.so
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# RUN: llvm-readelf -r %t1.so | FileCheck %s --check-prefix=CHECK1
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# CHECK1: R_X86_64_JUMP_SLOT 0000000000000000 bar + 0
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# CHECK1-NEXT: R_X86_64_JUMP_SLOT 0000000000000000 __wrap_foo + 0
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## --no-allow-shlib-undefined errors because __real_foo is not defined.
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# RUN: not ld.lld %t/main.o %t/bar.so -o /dev/null 2>&1 | FileCheck --check-prefix=ERR %s
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# ERR: error: undefined reference: __real_foo
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## --wrap=foo defines __real_foo.
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# RUN: ld.lld %t/main.o %t/bar.so --wrap=foo -o %t2
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# RUN: llvm-readelf --dyn-syms %t2 | FileCheck %s --check-prefix=CHECK2
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## See wrap-plt2.s why __wrap_foo is retained.
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# CHECK2: Symbol table '.dynsym' contains 3 entries:
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# CHECK2: NOTYPE LOCAL DEFAULT UND
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# CHECK2-NEXT: NOTYPE GLOBAL DEFAULT UND bar
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# CHECK2-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap_foo
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## __wrap_bar is undefined.
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# RUN: ld.lld -shared %t/main.o --wrap=bar -o %t3.so
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# RUN: llvm-readelf -r --dyn-syms %t3.so | FileCheck %s --check-prefix=CHECK3
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# CHECK3: R_X86_64_JUMP_SLOT 0000000000000000 __wrap_bar + 0
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# CHECK3: Symbol table '.dynsym' contains 4 entries:
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# CHECK3: NOTYPE LOCAL DEFAULT UND
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# CHECK3-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap_bar
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# CHECK3-NEXT: NOTYPE GLOBAL DEFAULT 6 _start
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# CHECK3-NEXT: NOTYPE GLOBAL DEFAULT 6 foo
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## __wrap_bar is defined in %t/wrap.so.
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# RUN: ld.lld -shared %t/main.o %t/wrap.so --wrap=bar -o %t4.so
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# RUN: llvm-readelf -r --dyn-syms %t4.so | FileCheck %s --check-prefix=CHECK4
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# CHECK4: R_X86_64_JUMP_SLOT {{.*}} __wrap_bar + 0
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# CHECK4: Symbol table '.dynsym' contains 4 entries:
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# CHECK4: NOTYPE LOCAL DEFAULT UND
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# CHECK4-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap_bar
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# CHECK4-NEXT: NOTYPE GLOBAL DEFAULT 6 _start
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# CHECK4-NEXT: NOTYPE GLOBAL DEFAULT 6 foo
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# RUN: ld.lld %t/main.o %t/wrap.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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#--- call-foo.s
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call foo
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#--- bar.s
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.globl bar
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bar:
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call __real_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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