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llvm-project
/lld
/test
/MachO
/
compact-unwind.s 
184 строки · 8.2 Кб
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# REQUIRES: x86, aarch64
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# RUN: rm -rf %t; split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 -emit-compact-unwind-non-canonical=true %t/my-personality.s -o %t/x86_64-my-personality.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 -emit-compact-unwind-non-canonical=true %t/main.s -o %t/x86_64-main.o
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# RUN: %lld -arch x86_64 -lSystem -lc++ %t/x86_64-my-personality.o %t/x86_64-main.o -o %t/x86_64-personality-first
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/x86_64-personality-first | FileCheck %s --check-prefixes=FIRST,CHECK -D#%x,BASE=0x100000000 -DSEG=__TEXT
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# RUN: %lld -dead_strip -arch x86_64 -lSystem -lc++ %t/x86_64-main.o %t/x86_64-my-personality.o -o %t/x86_64-personality-second
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/x86_64-personality-second | FileCheck %s --check-prefixes=SECOND,CHECK -D#%x,BASE=0x100000000 -DSEG=__TEXT
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# RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin19.0.0 -emit-compact-unwind-non-canonical=true %t/my-personality.s -o %t/arm64-my-personality.o
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# RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin19.0.0 -emit-compact-unwind-non-canonical=true %t/main.s -o %t/arm64-main.o
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# RUN: %lld -arch arm64 -lSystem -lc++ %t/arm64-my-personality.o %t/arm64-main.o -o %t/arm64-personality-first
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/arm64-personality-first | FileCheck %s --check-prefixes=FIRST,CHECK -D#%x,BASE=0x100000000 -DSEG=__TEXT
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# RUN: %lld -dead_strip -arch arm64 -lSystem -lc++ %t/arm64-main.o %t/arm64-my-personality.o -o %t/arm64-personality-second
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/arm64-personality-second | FileCheck %s --check-prefixes=SECOND,CHECK -D#%x,BASE=0x100000000 -DSEG=__TEXT
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# RUN: llvm-mc -filetype=obj -triple=arm64_32-apple-watchos -emit-compact-unwind-non-canonical=true %t/my-personality.s -o %t/arm64-32-my-personality.o
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# RUN: llvm-mc -filetype=obj -triple=arm64_32-apple-watchos -emit-compact-unwind-non-canonical=true %t/main.s -o %t/arm64-32-main.o
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# RUN: %lld-watchos -lSystem -lc++ %t/arm64-32-my-personality.o %t/arm64-32-main.o -o %t/arm64-32-personality-first
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/arm64-32-personality-first | FileCheck %s --check-prefixes=FIRST,CHECK -D#%x,BASE=0x4000 -DSEG=__TEXT
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# RUN: %lld-watchos -dead_strip -lSystem -lc++ %t/arm64-32-main.o %t/arm64-32-my-personality.o -o %t/arm64-32-personality-second
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/arm64-32-personality-second | FileCheck %s --check-prefixes=SECOND,CHECK -D#%x,BASE=0x4000 -DSEG=__TEXT
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# RUN: %lld -arch x86_64 -rename_section __TEXT __gcc_except_tab __RODATA __gcc_except_tab -lSystem -lc++ %t/x86_64-my-personality.o %t/x86_64-main.o -o %t/x86_64-personality-first
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/x86_64-personality-first | FileCheck %s --check-prefixes=FIRST,CHECK -D#%x,BASE=0x100000000 -DSEG=__RODATA
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# RUN: %lld -dead_strip -arch x86_64 -rename_section __TEXT __gcc_except_tab __RODATA __gcc_except_tab -lSystem -lc++ %t/x86_64-main.o %t/x86_64-my-personality.o -o %t/x86_64-personality-second
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# RUN: llvm-objdump --macho --unwind-info --syms --indirect-symbols --rebase %t/x86_64-personality-second | FileCheck %s --check-prefixes=SECOND,CHECK -D#%x,BASE=0x100000000 -DSEG=__RODATA
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# FIRST:      Indirect symbols for (__DATA_CONST,__got)
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# FIRST-NEXT: address                    index name
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# FIRST-DAG:  0x[[#%x,GXX_PERSONALITY:]] [[#]] ___gxx_personality_v0
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# FIRST-DAG:  0x[[#%x,MY_PERSONALITY:]] LOCAL
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# SECOND:      Indirect symbols for (__DATA_CONST,__got)
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# SECOND-NEXT: address                    index name
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# SECOND-DAG:  0x[[#%x,GXX_PERSONALITY:]] [[#]] ___gxx_personality_v0
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# SECOND-DAG:  0x[[#%x,MY_PERSONALITY:]] LOCAL
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# CHECK:      SYMBOL TABLE:
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# CHECK-DAG:  [[#%x,MAIN:]]       g  F __TEXT,__text _main
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# CHECK-DAG:  [[#%x,QUUX:]]       g  F __TEXT,__text _quux
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# CHECK-DAG:  [[#%x,FOO:]]        l  F __TEXT,__text _foo
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# CHECK-DAG:  [[#%x,BAZ:]]        l  F __TEXT,__text _baz
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# CHECK-DAG:  [[#%x,EXCEPTION0:]] g  O [[SEG]],__gcc_except_tab _exception0
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# CHECK-DAG:  [[#%x,EXCEPTION1:]] g  O [[SEG]],__gcc_except_tab _exception1
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# CHECK:      Contents of __unwind_info section:
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# CHECK:        Personality functions: (count = 2)
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# CHECK-DAG:     personality[{{[0-9]+}}]: 0x{{0*}}[[#MY_PERSONALITY-BASE]]
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# CHECK-DAG:     personality[{{[0-9]+}}]: 0x{{0*}}[[#GXX_PERSONALITY-BASE]]
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# CHECK:      Top level indices: (count = 2)
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# CHECK-DAG:    [0]: function offset={{.*}}, 2nd level page offset=0x[[#%x,PAGEOFF:]],
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# CHECK-DAG:    [1]: function offset={{.*}}, 2nd level page offset=0x00000000,
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# CHECK:        LSDA descriptors:
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# CHECK-DAG:     function offset=0x[[#%.8x,FOO-BASE]],  LSDA offset=0x[[#%.8x,EXCEPTION0-BASE]]
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# CHECK-DAG:     function offset=0x[[#%.8x,MAIN-BASE]], LSDA offset=0x[[#%.8x,EXCEPTION1-BASE]]
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# CHECK:        Second level indices:
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# CHECK-NEXT:   Second level index[0]: offset in section=0x[[#%.8x,PAGEOFF]]
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# CHECK-DAG:     function offset=0x[[#%.8x,MAIN-BASE]], encoding
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# CHECK-DAG:     function offset=0x[[#%.8x,FOO-BASE]], encoding
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# CHECK-DAG:     function offset=0x[[#%.8x,BAZ-BASE]], encoding
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# CHECK-DAG:     function offset=0x[[#%.8x,QUUX-BASE]], encoding{{.*}}=0x00000000
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## Check that we do not add rebase opcodes to the compact unwind section.
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# CHECK:      Rebase table:
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# CHECK-NEXT: segment      section        address          type
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# CHECK-NEXT: __DATA_CONST __got          0x{{[0-9A-F]*}}  pointer
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# CHECK-NOT:  __TEXT
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## Check that we don't create an __unwind_info section if no unwind info
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## remains after dead-stripping.
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 \
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# RUN:   %t/empty-after-dead-strip.s -o %t/x86_64-empty-after-dead-strip.o
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# RUN: %lld -dylib -dead_strip -arch x86_64 -lSystem \
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# RUN:   %t/x86_64-empty-after-dead-strip.o -o %t/x86_64-empty-after-strip.dylib
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# RUN: llvm-objdump --macho --unwind-info %t/x86_64-empty-after-strip.dylib | \
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# RUN:   FileCheck %s --check-prefixes=NOUNWIND --allow-empty
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# NOUNWIND-NOT: Contents of __unwind_info section:
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#--- my-personality.s
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.globl _my_personality, _exception0
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.text
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.p2align 2
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.no_dead_strip _foo
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_foo:
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  .cfi_startproc
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## This will generate a section relocation.
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  .cfi_personality 155, _my_personality
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  .cfi_lsda 16, _exception0
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  .cfi_def_cfa_offset 16
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  ret
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  .cfi_endproc
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.p2align 2
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.no_dead_strip _bar
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_bar:
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  .cfi_startproc
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## Check that we dedup references to the same statically-linked personality.
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  .cfi_personality 155, _my_personality
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  .cfi_lsda 16, _exception0
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  .cfi_def_cfa_offset 16
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  ret
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  .cfi_endproc
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.data
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.p2align 2
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## We put this personality in `__data` to test if we correctly handle
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## personality symbols whose output addresses occur after that of the
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## `__unwind_info` section.
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_my_personality:
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  ret
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.section __TEXT,__gcc_except_tab
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_exception0:
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  .space 1
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.subsections_via_symbols
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#--- main.s
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.globl _main, _quux, _my_personality, _exception1
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.text
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.p2align 2
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_main:
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  .cfi_startproc
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  .cfi_personality 155, ___gxx_personality_v0
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  .cfi_lsda 16, _exception1
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  .cfi_def_cfa_offset 16
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  ret
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  .cfi_endproc
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## _quux has no unwind information.
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## (In real life, it'd be part of a separate TU that was built with
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## -fno-exceptions, while the previous and next TU might be Objective-C++
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## which has unwind info for Objective-C).
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.p2align 2
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.no_dead_strip _quux
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_quux:
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  ret
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.globl _abs
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.no_dead_strip _abs
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_abs = 4
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.p2align 2
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.no_dead_strip _baz
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_baz:
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  .cfi_startproc
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## This will generate a symbol relocation. Check that we reuse the personality
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## referenced by the section relocation in my_personality.s.
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  .cfi_personality 155, _my_personality
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  .cfi_lsda 16, _exception1
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  .cfi_def_cfa_offset 16
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  ret
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  .cfi_endproc
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.globl _stripped
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_stripped:
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  .cfi_startproc
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  .cfi_personality 155, ___gxx_personality_v0
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  .cfi_lsda 16, _exception1
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  .cfi_def_cfa_offset 16
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  ret
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  .cfi_endproc
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.section __TEXT,__gcc_except_tab
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_exception1:
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  .space 1
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.subsections_via_symbols
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#--- empty-after-dead-strip.s
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.text
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## Local symbol with unwind info.
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## The symbol is removed by -dead_strip.
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_foo :
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  .cfi_startproc
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  .cfi_def_cfa_offset 16
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  retq
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  .cfi_endproc
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.subsections_via_symbols
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