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