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