forked from OSchip/llvm-project
91 lines
3.6 KiB
ArmAsm
91 lines
3.6 KiB
ArmAsm
# REQUIRES: x86
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# RUN: rm -rf %t
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# RUN: split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/foo.o %t/foo.s
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# RUN: %lld -dylib -o %t/foo.dylib %t/foo.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/main.o %t/main.s
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# _foo starts out as a (non-weak) dynamically looked up symbol and is merged
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# against the Undefined from foo.o. _bar isn't referenced in any object file,
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# but starts out as Undefined because of the -u flag. _baz isn't referenced
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# at all.
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# RUN: %lld -lSystem %t/main.o -U _foo -U _bar -u _bar -U _baz -o %t/out
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# RUN: llvm-objdump --macho --lazy-bind %t/out | FileCheck --check-prefix=DYNAMIC %s
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# RUN: llvm-nm -m %t/out | FileCheck --check-prefix=DYNAMICSYM %s
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# Same thing should happen if _foo starts out as an Undefined.
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# `-U _foo` being passed twice shouldn't have an effect either.
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# RUN: %lld -lSystem %t/main.o -u _foo -U _foo -U _foo -u _bar -U _bar -U _baz -o %t/out
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# RUN: llvm-objdump --macho --lazy-bind %t/out | FileCheck --check-prefix=DYNAMIC %s
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# RUN: llvm-nm -m %t/out | FileCheck --check-prefix=DYNAMICSYM %s
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# Unreferenced dynamic lookup symbols don't make it into the bind tables, but
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# they do make it into the symbol table in ld64 if they're an undefined from -u
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# for some reason. lld happens to have the same behavior when no explicit code
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# handles this case, so match ld64's behavior.
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# DYNAMIC-NOT: _bar
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# DYNAMIC-NOT: _baz
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# DYNAMIC: flat-namespace _foo
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# DYNAMICSYM: (undefined) external _bar (dynamically looked up)
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# DYNAMICSYM-NOT: (undefined) external _bar (dynamically looked up)
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# DYNAMICSYM-NEXT: (undefined) external _foo (dynamically looked up)
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# Test with a Defined. Here, foo.o provides _foo and the symbol doesn't need
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# to be imported.
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# RUN: %lld -lSystem %t/main.o %t/foo.o -U _foo -o %t/out
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# RUN: llvm-objdump --macho --lazy-bind %t/out | FileCheck --check-prefix=NOTDYNAMIC %s
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# NOTDYNAMIC-NOT: _foo
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# Here, foo.dylib provides _foo and the symbol doesn't need to be imported
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# dynamically.
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# RUN: %lld -lSystem %t/main.o %t/foo.dylib -U _foo -o %t/out
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# RUN: llvm-objdump --macho --lazy-bind %t/out | FileCheck --check-prefix=TWOLEVEL %s
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# RUN: llvm-nm -m %t/out | FileCheck --check-prefix=TWOLEVELSYM %s
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# TWOLEVEL: foo _foo
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# TWOLEVELSYM: (undefined) external _foo (from foo)
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# Test resolving dynamic lookup symbol with weak defined.
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/weak-foo.o %t/weak-foo.s
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# RUN: %lld -dylib -o %t/weak-foo.dylib %t/weak-foo.o -U _foo
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# RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/weak-foo.dylib | FileCheck --check-prefix=WEAKDEF %s
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# RUN: llvm-nm -m %t/weak-foo.dylib | FileCheck --check-prefix=WEAKDEFSYM %s
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# WEAKDEF-NOT: _foo
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# WEAKDEFSYM: weak external _foo
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# Same if foo.dylib provides _foo weakly, except that the symbol is weak then.
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# RUN: %lld -lSystem %t/main.o %t/weak-foo.dylib -U _foo -o %t/out
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# RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/out | FileCheck --check-prefix=TWOLEVELWEAK %s
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# RUN: llvm-nm -m %t/out | FileCheck --check-prefix=TWOLEVELWEAKSYM %s
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# TWOLEVELWEAK-LABEL: Bind table:
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# TWOLEVELWEAK: __DATA __la_symbol_ptr 0x[[#%x,ADDR:]] pointer 0 weak-foo _foo
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# TWOLEVELWEAK-LABEL: Lazy bind table:
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# TWOLEVELWEAK-NOT: weak-foo _foo
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# TWOLEVELWEAK-LABEL: Weak bind table:
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# TWOLEVELWEAK: __DATA __la_symbol_ptr 0x[[#ADDR]] pointer 0 _foo
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# TWOLEVELWEAKSYM: (undefined) weak external _foo (from weak-foo)
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#--- foo.s
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.globl _foo
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_foo:
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ret
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#--- weak-foo.s
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.globl _foo
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.weak_definition _foo
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_foo:
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ret
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#--- main.s
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.globl _main
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_main:
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callq _foo
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ret
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