c3e4f3b231
The Mach kernel & codesign on arm64 macOS has strict requirements for alignment and sequence of segments and sections. Dyld probably is just as picky, though kernel & codesign reject malformed Mach-O files before dyld ever has a chance. I developed this diff by incrementally changing alignments & sequences to match the output of ld64. I stopped when my hello-world test program started working: `codesign --verify` succeded, and `execve(2)` didn't immediately fail with `errno == EBADMACHO` = `"Malformed Mach-O file"`. Differential Revision: https://reviews.llvm.org/D94935
144 lines
4.9 KiB
ArmAsm
144 lines
4.9 KiB
ArmAsm
# REQUIRES: x86
|
|
# RUN: split-file %s %t
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/libfoo.s -o %t/libfoo.o
|
|
# RUN: %lld -dylib %t/libfoo.o -o %t/libfoo.dylib
|
|
# RUN: %lld %t/test.o -L%t -lfoo -o %t/test -lSystem
|
|
# RUN: llvm-objdump -d --no-show-raw-insn --bind --lazy-bind --weak-bind --full-contents %t/test | \
|
|
# RUN: FileCheck %s
|
|
|
|
# CHECK: Contents of section __DATA_CONST,__got:
|
|
## Check that this section contains a nonzero pointer. It should point to
|
|
## _weak_external_for_gotpcrel.
|
|
# CHECK-NEXT: {{[0-9a-f]+}} {{[0-9a-f ]*[1-9a-f]+[0-9a-f ]*}}
|
|
|
|
# CHECK: Contents of section __DATA,__la_symbol_ptr:
|
|
## Check that this section contains a nonzero pointer. It should point to
|
|
## _weak_external_fn, but we don't have a good way of testing the exact value as
|
|
## the bytes here are in little-endian order.
|
|
# CHECK-NEXT: {{[0-9a-f]+}} {{[0-9a-f ]*[1-9a-f]+[0-9a-f ]*}}
|
|
|
|
# CHECK: <_main>:
|
|
# CHECK-NEXT: movq [[#]](%rip), %rax # [[#%X,WEAK_DY_GOT_ADDR:]]
|
|
# CHECK-NEXT: movq [[#]](%rip), %rax # [[#%X,WEAK_EXT_GOT_ADDR:]]
|
|
# CHECK-NEXT: leaq [[#]](%rip), %rax # [[#%X,WEAK_INT_GOT_ADDR:]]
|
|
# CHECK-NEXT: movq [[#]](%rip), %rax # [[#%X,WEAK_TLV_ADDR:]]
|
|
# CHECK-NEXT: movq [[#]](%rip), %rax # [[#%X,WEAK_DY_TLV_ADDR:]]
|
|
# CHECK-NEXT: leaq [[#]](%rip), %rax # [[#%X,WEAK_INT_TLV_ADDR:]]
|
|
# CHECK-NEXT: callq 0x{{[0-9a-f]*}}
|
|
# CHECK-NEXT: callq 0x{{[0-9a-f]*}}
|
|
# CHECK-NEXT: callq 0x{{[0-9a-f]*}}
|
|
|
|
# CHECK-LABEL: Bind table:
|
|
# CHECK-DAG: __DATA_CONST __got 0x[[#WEAK_DY_GOT_ADDR]] pointer 0 libfoo _weak_dysym_for_gotpcrel
|
|
# CHECK-DAG: __DATA __la_symbol_ptr 0x[[#%x,WEAK_DY_FN:]] pointer 0 libfoo _weak_dysym_fn
|
|
# CHECK-DAG: __DATA __data 0x[[#%x,WEAK_DY:]] pointer 0 libfoo _weak_dysym
|
|
# CHECK-DAG: __DATA __thread_vars 0x{{[0-9a-f]*}} pointer 0 libSystem __tlv_bootstrap
|
|
# CHECK-DAG: __DATA __thread_ptrs 0x[[#WEAK_DY_TLV_ADDR]] pointer 0 libfoo _weak_dysym_tlv
|
|
## Check that we don't have any other bindings
|
|
# CHECK-NOT: pointer
|
|
|
|
# CHECK-LABEL: Lazy bind table:
|
|
## Verify that we have no lazy bindings
|
|
# CHECK-NOT: pointer
|
|
|
|
# CHECK-LABEL: Weak bind table:
|
|
# CHECK-DAG: __DATA_CONST __got 0x[[#WEAK_DY_GOT_ADDR]] pointer 0 _weak_dysym_for_gotpcrel
|
|
# CHECK-DAG: __DATA_CONST __got 0x[[#WEAK_EXT_GOT_ADDR]] pointer 0 _weak_external_for_gotpcrel
|
|
# CHECK-DAG: __DATA __data 0x[[#WEAK_DY]] pointer 0 _weak_dysym
|
|
# CHECK-DAG: __DATA __thread_ptrs 0x[[#WEAK_TLV_ADDR]] pointer 0 _weak_tlv
|
|
# CHECK-DAG: __DATA __thread_ptrs 0x[[#WEAK_DY_TLV_ADDR]] pointer 0 _weak_dysym_tlv
|
|
# CHECK-DAG: __DATA __data 0x{{[0-9a-f]*}} pointer 2 _weak_external
|
|
# CHECK-DAG: __DATA __la_symbol_ptr 0x[[#WEAK_DY_FN]] pointer 0 _weak_dysym_fn
|
|
# CHECK-DAG: __DATA __la_symbol_ptr 0x{{[0-9a-f]*}} pointer 0 _weak_external_fn
|
|
## Check that we don't have any other bindings
|
|
# CHECK-NOT: pointer
|
|
|
|
## Weak internal symbols don't get bindings
|
|
# RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/test | FileCheck %s --check-prefix=WEAK-INTERNAL
|
|
# WEAK-INTERNAL-NOT: _weak_internal
|
|
# WEAK-INTERNAL-NOT: _weak_internal_fn
|
|
# WEAK-INTERNAL-NOT: _weak_internal_tlv
|
|
|
|
#--- libfoo.s
|
|
|
|
.globl _weak_dysym
|
|
.weak_definition _weak_dysym
|
|
_weak_dysym:
|
|
.quad 0x1234
|
|
|
|
.globl _weak_dysym_for_gotpcrel
|
|
.weak_definition _weak_dysym_for_gotpcrel
|
|
_weak_dysym_for_gotpcrel:
|
|
.quad 0x1234
|
|
|
|
.globl _weak_dysym_fn
|
|
.weak_definition _weak_dysym_fn
|
|
_weak_dysym_fn:
|
|
ret
|
|
|
|
.section __DATA,__thread_vars,thread_local_variables
|
|
|
|
.globl _weak_dysym_tlv
|
|
.weak_definition _weak_dysym_tlv
|
|
_weak_dysym_tlv:
|
|
.quad 0x1234
|
|
|
|
#--- test.s
|
|
|
|
.globl _main, _weak_external, _weak_external_for_gotpcrel, _weak_external_fn
|
|
.weak_definition _weak_external, _weak_external_for_gotpcrel, _weak_external_fn, _weak_internal, _weak_internal_for_gotpcrel, _weak_internal_fn
|
|
|
|
_main:
|
|
mov _weak_dysym_for_gotpcrel@GOTPCREL(%rip), %rax
|
|
mov _weak_external_for_gotpcrel@GOTPCREL(%rip), %rax
|
|
mov _weak_internal_for_gotpcrel@GOTPCREL(%rip), %rax
|
|
mov _weak_tlv@TLVP(%rip), %rax
|
|
mov _weak_dysym_tlv@TLVP(%rip), %rax
|
|
mov _weak_internal_tlv@TLVP(%rip), %rax
|
|
callq _weak_dysym_fn
|
|
callq _weak_external_fn
|
|
callq _weak_internal_fn
|
|
mov $0, %rax
|
|
ret
|
|
|
|
_weak_external:
|
|
.quad 0x1234
|
|
|
|
_weak_external_for_gotpcrel:
|
|
.quad 0x1234
|
|
|
|
_weak_external_fn:
|
|
ret
|
|
|
|
_weak_internal:
|
|
.quad 0x1234
|
|
|
|
_weak_internal_for_gotpcrel:
|
|
.quad 0x1234
|
|
|
|
_weak_internal_fn:
|
|
ret
|
|
|
|
.data
|
|
.quad _weak_dysym
|
|
.quad _weak_external + 2
|
|
.quad _weak_internal
|
|
|
|
.tbss _weak_tlv$tlv$init, 4, 2
|
|
.tbss _weak_internal_tlv$tlv$init, 4, 2
|
|
|
|
.section __DATA,__thread_vars,thread_local_variables
|
|
.globl _weak_tlv
|
|
.weak_definition _weak_tlv, _weak_internal_tlv
|
|
|
|
_weak_tlv:
|
|
.quad __tlv_bootstrap
|
|
.quad 0
|
|
.quad _weak_tlv$tlv$init
|
|
|
|
_weak_internal_tlv:
|
|
.quad __tlv_bootstrap
|
|
.quad 0
|
|
.quad _weak_internal_tlv$tlv$init
|