Mercurial > hg > CbC > CbC_llvm
comparison lld/test/ELF/weak-undef-shared.s @ 150:1d019706d866
LLVM10
| author | anatofuz |
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| date | Thu, 13 Feb 2020 15:10:13 +0900 |
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| children |
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| 147:c2174574ed3a | 150:1d019706d866 |
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| 1 # REQUIRES: x86 | |
| 2 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o | |
| 3 # RUN: ld.lld -shared %t.o -o %t.so | |
| 4 | |
| 5 # RUN: echo '.data; .weak foo; .quad foo' | llvm-mc -filetype=obj -triple=x86_64 - -o %t1.o | |
| 6 # RUN: echo '.data; .quad foo' | llvm-mc -filetype=obj -triple=x86_64 - -o %t2.o | |
| 7 # RUN: ld.lld -shared %t2.o -o %t2.so | |
| 8 | |
| 9 ## If the first undefined reference is weak, the binding changes to | |
| 10 ## STB_WEAK. | |
| 11 # RUN: ld.lld %t1.o %t.so -o %t | |
| 12 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s | |
| 13 # RUN: ld.lld %t.so %t1.o -o %t | |
| 14 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s | |
| 15 | |
| 16 ## The binding remains STB_WEAK if there is no STB_GLOBAL undefined reference. | |
| 17 # RUN: ld.lld %t1.o %t.so %t1.o -o %t | |
| 18 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s | |
| 19 # RUN: ld.lld %t.so %t1.o %t1.o -o %t | |
| 20 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s | |
| 21 | |
| 22 ## The binding changes back to STB_GLOBAL if there is a STB_GLOBAL undefined reference. | |
| 23 # RUN: ld.lld %t1.o %t.so %t2.o -o %t | |
| 24 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=GLOBAL %s | |
| 25 # RUN: ld.lld %t2.o %t.so %t1.o -o %t | |
| 26 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=GLOBAL %s | |
| 27 | |
| 28 ## Check the binding (weak) is not affected by the STB_GLOBAL undefined | |
| 29 ## reference in %t2.so | |
| 30 # RUN: ld.lld %t1.o %t2.so -o %t | |
| 31 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s | |
| 32 | |
| 33 # RUN: ld.lld %t2.so %t1.o -o %t | |
| 34 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s | |
| 35 | |
| 36 # WEAK: NOTYPE WEAK DEFAULT UND foo | |
| 37 # GLOBAL: NOTYPE GLOBAL DEFAULT UND foo | |
| 38 | |
| 39 .globl foo | |
| 40 foo: |