| # 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: {{.*}}.so: undefined reference to __real_foo [--no-allow-shlib-undefined] |
| |
| ## --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 4 entries: |
| # CHECK2: NOTYPE LOCAL DEFAULT UND |
| # CHECK2-NEXT: NOTYPE GLOBAL DEFAULT UND bar |
| # CHECK2-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap_foo |
| # CHECK2-NEXT: NOTYPE GLOBAL DEFAULT 6 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 |