llvm-project/lld/test/MachO/flat-namespace-interposable.s

81 lines
3.0 KiB
ArmAsm

# REQUIRES: x86
# RUN: rm -rf %t; split-file %s %t
## With -flat_namespace, non-weak extern symbols in dylibs become interposable.
## Check that we generate the correct bindings for them. The test also includes
## other symbol types like weak externs to verify we continue to do the same
## (correct) thing even when `-flat_namespace` is enabled, instead of generating
## spurious bindings.
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/foo.o %t/foo.s
# RUN: %lld -lSystem -flat_namespace -o %t/foo %t/foo.o
# RUN: %lld -lSystem -dylib -flat_namespace -o %t/foo.dylib %t/foo.o
# RUN: %lld -lSystem -bundle -flat_namespace -o %t/foo.bundle %t/foo.o
# RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/foo | FileCheck \
# RUN: %s --check-prefix=EXEC --implicit-check-not=_private_extern
# RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/foo.dylib | \
# RUN: FileCheck %s --check-prefix=DYLIB --implicit-check-not=_private_extern
# RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/foo.bundle | \
# RUN: FileCheck %s --check-prefix=DYLIB --implicit-check-not=_private_extern
## Executables with -flat_namespace don't have interposable externs.
# EXEC: Bind table:
# EXEC-NEXT: segment section address type addend dylib symbol
# EXEC-EMPTY:
# EXEC-NEXT: Lazy bind table:
# EXEC-NEXT: segment section address dylib symbol
# EXEC-EMPTY:
# EXEC-NEXT: Weak bind table:
# EXEC-NEXT: segment section address type addend symbol
# EXEC-NEXT: __DATA __la_symbol_ptr {{.*}} pointer 0 _weak_extern
# EXEC-NEXT: __DATA __data {{.*}} pointer 0 _weak_extern
# EXEC-EMPTY:
# DYLIB: Bind table:
# DYLIB-NEXT: segment section address type addend dylib symbol
# DYLIB-DAG: __DATA __data {{.*}} pointer 0 flat-namespace _extern
# DYLIB-DAG: __DATA __thread_ptrs {{.*}} pointer 0 flat-namespace _tlv
# DYLIB-DAG: __DATA_CONST __got {{.*}} pointer 0 flat-namespace dyld_stub_binder
# DYLIB-EMPTY:
# DYLIB-NEXT: Lazy bind table:
# DYLIB-NEXT: segment section address dylib symbol
# DYLIB-NEXT: __DATA __la_symbol_ptr {{.*}} flat-namespace _extern
# DYLIB-EMPTY:
# DYLIB-NEXT: Weak bind table:
# DYLIB-NEXT: segment section address type addend symbol
# DYLIB-NEXT: __DATA __la_symbol_ptr {{.*}} pointer 0 _weak_extern
# DYLIB-NEXT: __DATA __data {{.*}} pointer 0 _weak_extern
#--- foo.s
.globl _main, _extern, _weak_extern, _tlv
.weak_definition _weak_extern
.private_extern _private_extern
_extern:
retq
_weak_extern:
retq
_private_extern:
retq
_local:
retq
_main:
callq _extern
callq _weak_extern
callq _private_extern
callq _local
mov _tlv@TLVP(%rip), %rax
retq
.data
.quad _extern
.quad _weak_extern
.quad _local
.section __DATA,__thread_vars,thread_local_variables
_tlv:
.subsections_via_symbols