# REQUIRES: x86 # RUN: rm -rf %t; split-file %s %t # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/foo.s -o %t/foo.o # 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/c-string-literal.s -o %t/c-string-literal.o # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/baz.s -o %t/baz.o # RUN: llvm-ar --format=darwin crs %t/libfoo.a %t/foo.o # RUN: %lld -dylib %t/baz.o -o %t/libbaz.dylib # RUN: %lld -demangle -map %t/map %t/test.o -force_load %t/libfoo.a \ # RUN: %t/c-string-literal.o %t/libbaz.dylib --time-trace -o %t/test \ # RUN: --no-deduplicate-strings # RUN: llvm-objdump --syms --section-headers %t/test > %t/objdump ## Check that symbols in cstring sections aren't emitted ## Also check that we don't have redundant EH_Frame symbols (regression test) # RUN: cat %t/objdump %t/map | FileCheck %s --implicit-check-not _hello_world \ # RUN: --implicit-check-not EH_Frame # RUN: FileCheck %s --check-prefix=MAPFILE < %t/test.time-trace # CHECK: Sections: # CHECK-NEXT: Idx Name Size VMA Type # CHECK-NEXT: 0 __text 0000001c [[#%x,TEXT:]] TEXT # CHECK-NEXT: 1 __stubs 0000000c [[#%x,STUBS:]] TEXT # CHECK-NEXT: 2 __stub_helper 0000001a [[#%x,HELPER:]] TEXT # CHECK-NEXT: 3 __cstring 0000002b [[#%x,CSTR:]] DATA # CHECK-NEXT: 4 __unwind_info 0000103c [[#%x,UNWIND:]] DATA # CHECK-NEXT: 5 __eh_frame 00000038 [[#%x,EH_FRAME:]] DATA # CHECK-NEXT: 6 __got 00000010 [[#%x,GOT:]] DATA # CHECK-NEXT: 7 __la_symbol_ptr 00000010 [[#%x,LAZY:]] DATA # CHECK-NEXT: 8 __data 00000008 [[#%x,DATA:]] DATA # CHECK-NEXT: 9 __thread_ptrs 00000008 [[#%x,TLVP:]] DATA # CHECK-NEXT: 10 __common 00000001 [[#%x,BSS:]] BSS # CHECK: SYMBOL TABLE: # CHECK-DAG: [[#%x,DYLD:]] l O __DATA,__data __dyld_private # CHECK-DAG: [[#%x,MAIN:]] g F __TEXT,__text _main # CHECK-DAG: [[#%x,NUMBER:]] g O __DATA,__common _number # CHECK-DAG: [[#%x,BAR:]] w F __TEXT,__text _bar # CHECK-DAG: [[#%x,FOO:]] g F __TEXT,__text __ZTIN3foo3bar4MethE # CHECK-DAG: [[#%x,HIWORLD:]] g O __TEXT,__cstring _hello_world # CHECK-DAG: [[#%x,HIITSME:]] g O __TEXT,__cstring _hello_its_me # CHECK: # Path: {{.*}}{{/|\\}}map-file.s.tmp/test # CHECK-NEXT: # Arch: x86_64 # CHECK-NEXT: # Object files: # CHECK-NEXT: [ 0] linker synthesized # CHECK-NEXT: [ 1] {{.*}}{{/|\\}}usr/lib{{/|\\}}libSystem.tbd{{$}} # CHECK-NEXT: [ 2] {{.*}}{{/|\\}}map-file.s.tmp/test.o{{$}} # CHECK-NEXT: [ 3] {{.*}}{{/|\\}}map-file.s.tmp/libfoo.a(foo.o){{$}} # CHECK-NEXT: [ 4] {{.*}}{{/|\\}}map-file.s.tmp/c-string-literal.o{{$}} # CHECK-NEXT: [ 5] {{.*}}{{/|\\}}map-file.s.tmp/libbaz.dylib{{$}} # CHECK-NEXT: # Sections: # CHECK-NEXT: # Address Size Segment Section # CHECK-NEXT: 0x[[#%X,TEXT]] 0x{{[0-9A-F]+}} __TEXT __text # CHECK-NEXT: 0x[[#%X,STUBS]] 0x{{[0-9A-F]+}} __TEXT __stubs # CHECK-NEXT: 0x[[#%X,HELPER]] 0x{{[0-9A-F]+}} __TEXT __stub_helper # CHECK-NEXT: 0x[[#%X,CSTR]] 0x{{[0-9A-F]+}} __TEXT __cstring # CHECK-NEXT: 0x[[#%X,UNWIND]] 0x{{[0-9A-F]+}} __TEXT __unwind_info # CHECK-NEXT: 0x[[#%X,EH_FRAME]] 0x{{[0-9A-F]+}} __TEXT __eh_frame # CHECK-NEXT: 0x[[#%X,GOT]] 0x{{[0-9A-F]+}} __DATA_CONST __got # CHECK-NEXT: 0x[[#%X,LAZY]] 0x{{[0-9A-F]+}} __DATA __la_symbol_ptr # CHECK-NEXT: 0x[[#%X,DATA]] 0x{{[0-9A-F]+}} __DATA __data # CHECK-NEXT: 0x[[#%X,TLVP]] 0x{{[0-9A-F]+}} __DATA __thread_ptrs # CHECK-NEXT: 0x[[#%X,BSS]] 0x{{[0-9A-F]+}} __DATA __common # CHECK-NEXT: # Symbols: # CHECK-NEXT: # Address Size File Name # CHECK-NEXT: 0x[[#%X,MAIN]] 0x00000019 [ 2] _main # CHECK-NEXT: 0x[[#%X,BAR]] 0x00000001 [ 2] _bar # CHECK-NEXT: 0x[[#%X,FOO]] 0x00000001 [ 3] __ZTIN3foo3bar4MethE # CHECK-NEXT: 0x[[#%X,FOO+1]] 0x00000001 [ 3] ltmp1 # CHECK-NEXT: 0x[[#%X,STUBS]] 0x00000006 [ 5] _baz # CHECK-NEXT: 0x[[#%X,STUBS+6]] 0x00000006 [ 2] _bar # CHECK-NEXT: 0x[[#%X,HELPER]] 0x0000001A [ 0] helper helper # CHECK-NEXT: 0x[[#%X,HIWORLD]] 0x0000000E [ 4] literal string: Hello world!\n # CHECK-NEXT: 0x[[#%X,HIITSME]] 0x0000000F [ 4] literal string: Hello, it's me # CHECK-NEXT: 0x[[#%X,HIITSME+0xf]] 0x0000000E [ 4] literal string: Hello world!\n # CHECK-NEXT: 0x[[#%X,UNWIND]] 0x0000103C [ 0] compact unwind info ## Note: ld64 prints "CIE" and "FDE for: " instead of "EH_Frame". # CHECK-NEXT: 0x[[#%X,EH_FRAME]] 0x00000018 [ 2] EH_Frame # CHECK-NEXT: 0x[[#%X,EH_FRAME+0x18]] 0x00000020 [ 2] EH_Frame # CHECK-NEXT: 0x[[#%X,GOT]] 0x00000008 [ 0] non-lazy-pointer-to-local: _baz2 # CHECK-NEXT: 0x[[#%X,GOT+8]] 0x00000008 [ 0] non-lazy-pointer-to-local: dyld_stub_binder # CHECK-NEXT: 0x[[#%X,LAZY]] 0x00000008 [ 5] _baz # CHECK-NEXT: 0x[[#%X,LAZY+8]] 0x00000008 [ 2] _bar # CHECK-NEXT: 0x[[#%X,DYLD]] 0x00000000 [ 0] __dyld_private # CHECK-NEXT: 0x[[#%X,TLVP]] 0x00000008 [ 0] non-lazy-pointer-to-local: _baz_tlv # CHECK-NEXT: 0x[[#%X,BSS]] 0x00000001 [ 2] _number # CHECK-EMPTY: # MAPFILE: "name":"Total Write map file" # RUN: %lld -demangle -dead_strip -map %t/stripped-map %t/test.o -force_load \ # RUN: %t/libfoo.a %t/c-string-literal.o %t/libbaz.dylib -o %t/stripped # RUN: FileCheck --check-prefix=STRIPPED %s < %t/stripped-map # STRIPPED-LABEL: Dead Stripped Symbols: # STRIPPED-DAG: <> 0x00000001 [ 2] _number # STRIPPED-DAG: <> 0x00000001 [ 3] __ZTIN3foo3bar4MethE # STRIPPED-DAG: <> 0x0000000E [ 4] literal string: Hello world!\n # STRIPPED-DAG: <> 0x0000000F [ 4] literal string: Hello, it's me # STRIPPED-DAG: <> 0x0000000E [ 4] literal string: Hello world!\n # RUN: %lld --icf=all -map %t/icf-map %t/test.o -force_load %t/libfoo.a \ # RUN: %t/c-string-literal.o %t/libbaz.dylib -o /dev/null # RUN: FileCheck --check-prefix=ICF %s < %t/icf-map ## Verify that folded symbols and cstrings have size zero. Note that ld64 prints ## folded symbols but not folded cstrings; we print both. # ICF: Symbols: # ICF-DAG: 0x[[#%X,FOO:]] 0x00000000 [ 3] __ZTIN3foo3bar4MethE # ICF-DAG: 0x[[#FOO]] 0x00000001 [ 2] _bar # ICF-DAG: 0x[[#%X,HIWORLD:]] 0x0000000E [ 4] literal string: Hello world!\n # ICF-DAG: 0x[[#%X,HIWORLD]] 0x00000000 [ 4] literal string: Hello world!\n #--- foo.s .globl __ZTIN3foo3bar4MethE ## This should not appear in the map file since it is a zero-size private label ## symbol. ltmp0: ## This C++ symbol makes it clear that we do not print the demangled name in ## the map file, even if `-demangle` is passed. __ZTIN3foo3bar4MethE: nop ## This private label symbol will appear in the map file since it has nonzero ## size. ltmp1: nop .subsections_via_symbols #--- test.s .comm _number, 1 .globl _main, _bar .weak_definition _bar _main: .cfi_startproc .cfi_def_cfa_offset 16 callq _bar callq _baz movq _baz2@GOTPCREL(%rip), %rax mov _baz_tlv@TLVP(%rip), %rax ret .cfi_endproc _bar: nop .subsections_via_symbols #--- c-string-literal.s .globl _hello_world, _hello_its_me .cstring _hello_world: .asciz "Hello world!\n" _hello_its_me: .asciz "Hello, it's me" .asciz "Hello world!\n" .subsections_via_symbols #--- baz.s .globl _baz, _baz2 _baz: nop _baz2: nop .section __DATA,__thread_vars,thread_local_variables .globl _baz_tlv _baz_tlv: nop