forked from OSchip/llvm-project
198 lines
5.5 KiB
ArmAsm
198 lines
5.5 KiB
ArmAsm
# REQUIRES: x86
|
|
# RUN: rm -rf %t; split-file %s %t
|
|
|
|
## This tests that if two input files define the same weak symbol, we only
|
|
## write it to the output once (...assuming both input files use
|
|
## .subsections_via_symbols).
|
|
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/weak-sub.s -o %t/weak-sub.o
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/weak-nosub.s -o %t/weak-nosub.o
|
|
|
|
## Test that weak symbols are emitted just once with .subsections_via_symbols
|
|
# RUN: %lld -dylib -o %t/out.dylib %t/weak-sub.o %t/weak-sub.o
|
|
# RUN: llvm-otool -jtV %t/out.dylib | FileCheck --check-prefix=SUB %s
|
|
# RUN: %lld -dylib -o %t/out.dylib %t/weak-nosub.o %t/weak-sub.o
|
|
# RUN: llvm-otool -jtV %t/out.dylib | FileCheck --check-prefix=SUB %s
|
|
# RUN: %lld -dylib -o %t/out.dylib %t/weak-sub.o %t/weak-nosub.o
|
|
# RUN: llvm-otool -jtV %t/out.dylib | FileCheck --check-prefix=SUB %s
|
|
# SUB: _foo
|
|
# SUB-NEXT: retq
|
|
# SUB-NOT: retq
|
|
# SUB: _bar
|
|
# SUB-NEXT: retq
|
|
# SUB-NOT: retq
|
|
|
|
## We can even strip weak symbols without subsections_via_symbols as long
|
|
## as none of the weak symbols in a section are needed.
|
|
# RUN: %lld -dylib -o %t/out.dylib %t/weak-nosub.o %t/weak-nosub.o
|
|
# RUN: llvm-otool -jtV %t/out.dylib | FileCheck --check-prefix=SUB %s
|
|
|
|
## Test that omitted weak symbols don't add entries to the compact unwind table.
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 %t/weak-sub-lsda.s -o %t/weak-sub-lsda.o
|
|
# RUN: %lld -dylib -lc++ -o %t/out.dylib %t/weak-sub-lsda.o %t/weak-sub-lsda.o
|
|
# RUN: llvm-objdump --macho --unwind-info --syms %t/out.dylib | FileCheck %s --check-prefix=UNWIND -D#%x,BASE=0
|
|
|
|
# UNWIND: SYMBOL TABLE:
|
|
# UNWIND-DAG: [[#%x,FOO:]] w F __TEXT,__text _foo
|
|
# UNWIND-NOT: __TEXT,__text _foo
|
|
|
|
# UNWIND: Contents of __unwind_info section:
|
|
# UNWIND: LSDA descriptors:
|
|
# UNWIND: [0]: function offset=0x[[#%.8x,FOO-BASE]]
|
|
# UNWIND-NOT: [1]:
|
|
# UNWIND: Second level indices:
|
|
# UNWIND-DAG: [0]: function offset=0x[[#%.8x,FOO-BASE]]
|
|
# UNWIND-NOT: [1]:
|
|
|
|
## Test interaction with .alt_entry
|
|
## FIXME: ld64 manages to strip both one copy of _foo and _bar each.
|
|
## We only manage this if we're lucky and the object files are in
|
|
## the right order. We're happy to not crash at link time for now.
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 %t/weak-sub-alt.s -o %t/weak-sub-alt.o
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 %t/weak-sub-alt2.s -o %t/weak-sub-alt2.o
|
|
# RUN: %lld -dylib -o %t/out.dylib %t/weak-sub-alt.o %t/weak-sub-alt2.o
|
|
# RUN: %lld -dylib -o %t/out.dylib %t/weak-sub-alt2.o %t/weak-sub-alt.o
|
|
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 %t/weak-aligned-1.s -o %t/weak-aligned-1.o
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 %t/weak-aligned-2.s -o %t/weak-aligned-2.o
|
|
# RUN: %lld -o %t/out -lSystem %t/weak-aligned-1.o %t/weak-aligned-2.o
|
|
# RUN: llvm-objdump --syms --section=__const --full-contents %t/out | FileCheck --check-prefix=ALIGN %s
|
|
# ALIGN: SYMBOL TABLE:
|
|
# ALIGN-DAG: [[#%x, ADDR:]] l O __DATA_CONST,__const _weak1
|
|
# ALIGN-DAG: {{0*}}[[#ADDR+ 0x4]] l O __DATA_CONST,__const _weak3
|
|
# ALIGN-DAG: {{0*}}[[#ADDR+ 0x8]] l O __DATA_CONST,__const _weak2
|
|
# ALIGN-DAG: {{0*}}[[#ADDR+0x10]] g O __DATA_CONST,__const _aligned
|
|
# ALIGN: Contents of section __DATA_CONST,__const:
|
|
# ALIGN-NEXT: {{0*}}[[#ADDR]] 11111111 33333333 22222222 00000000
|
|
# ALIGN-NEXT: {{0*}}[[#ADDR+0x10]] 81818181 81818181 82828282 82828282
|
|
|
|
#--- weak-sub.s
|
|
.globl _foo, _bar
|
|
.weak_definition _foo, _bar
|
|
_foo:
|
|
retq
|
|
_bar:
|
|
retq
|
|
.subsections_via_symbols
|
|
|
|
#--- weak-nosub.s
|
|
.globl _foo, _bar
|
|
.weak_definition _foo, _bar
|
|
_foo:
|
|
retq
|
|
_bar:
|
|
retq
|
|
|
|
#--- weak-sub-lsda.s
|
|
.section __TEXT,__text,regular,pure_instructions
|
|
|
|
.globl _foo
|
|
.weak_definition _foo
|
|
_foo:
|
|
.cfi_startproc
|
|
.cfi_personality 155, ___gxx_personality_v0
|
|
.cfi_lsda 16, Lexception
|
|
pushq %rbp
|
|
.cfi_def_cfa_offset 128
|
|
.cfi_offset %rbp, 48
|
|
movq %rsp, %rbp
|
|
.cfi_def_cfa_register %rbp
|
|
popq %rbp
|
|
retq
|
|
.cfi_endproc
|
|
|
|
.section __TEXT,__gcc_except_tab
|
|
Lexception:
|
|
.space 0x10
|
|
|
|
.subsections_via_symbols
|
|
|
|
#--- weak-sub-alt.s
|
|
.globl _foo, _bar
|
|
.weak_definition _foo
|
|
_foo:
|
|
retq
|
|
|
|
# Alternative entry point to _foo (strong)
|
|
.alt_entry _bar
|
|
_bar:
|
|
retq
|
|
|
|
.globl _main, _ref
|
|
_main:
|
|
callq _ref
|
|
callq _bar
|
|
|
|
.subsections_via_symbols
|
|
|
|
#--- weak-sub-alt2.s
|
|
.globl _foo, _bar
|
|
.weak_definition _foo
|
|
_foo:
|
|
retq
|
|
|
|
# Alternative entry point to _foo (weak)
|
|
.weak_definition _bar
|
|
.alt_entry _bar
|
|
_bar:
|
|
retq
|
|
|
|
.globl _ref
|
|
_ref:
|
|
callq _bar
|
|
|
|
.subsections_via_symbols
|
|
|
|
#--- weak-aligned-1.s
|
|
.section __DATA,__const
|
|
.p2align 3
|
|
.globl _weak1
|
|
.weak_def_can_be_hidden _weak1
|
|
_weak1:
|
|
.4byte 0x11111111
|
|
|
|
.globl _weak3
|
|
.weak_def_can_be_hidden _weak3
|
|
_weak3:
|
|
.4byte 0x33333333
|
|
|
|
.subsections_via_symbols
|
|
|
|
#--- weak-aligned-2.s
|
|
# _weak1 and _weak3 are already in weak-aligned-1,
|
|
# so from _weak1-3 in this file only _weak2 is used.
|
|
# However, _aligned still has to stay aligned to a 16-byte boundary.
|
|
.section __DATA,__const
|
|
.p2align 3
|
|
.globl _weak1
|
|
.weak_def_can_be_hidden _weak1
|
|
_weak1:
|
|
.4byte 0x11111111
|
|
|
|
.globl _weak2
|
|
.weak_def_can_be_hidden _weak2
|
|
_weak2:
|
|
.4byte 0x22222222
|
|
|
|
.globl _weak3
|
|
.weak_def_can_be_hidden _weak3
|
|
_weak3:
|
|
.4byte 0x33333333
|
|
|
|
.section __DATA,__const
|
|
.p2align 4
|
|
.globl _aligned
|
|
_aligned:
|
|
.8byte 0x8181818181818181
|
|
.8byte 0x8282828282828282
|
|
|
|
.section __TEXT,__text
|
|
.globl _main
|
|
_main:
|
|
movl _weak1(%rip), %eax
|
|
movl _weak2(%rip), %ebx
|
|
movaps _aligned(%rip), %xmm0
|
|
retq
|
|
|
|
.subsections_via_symbols
|