derek.holloway
7502bf64a4
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108 lines
2.9 KiB
ArmAsm
108 lines
2.9 KiB
ArmAsm
# REQUIRES: x86, aarch64
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## Test that __eh_frame CIE/FDE ordering is preserved even when
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## priority-based section sorting (from BP compression sort, order files,
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## etc.) would otherwise reorder input sections. CIE records must precede
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## the FDE records that reference them; reordering breaks CIE pointer
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## resolution.
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## x86_64
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# RUN: llvm-mc -filetype=obj -emit-compact-unwind-non-canonical=true -triple=x86_64-apple-macos10.15 %s -o %t-x86_64.o
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# RUN: %lld -lSystem -lc++ %t-x86_64.o -o %t-x86_64 --bp-compression-sort=both
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# RUN: llvm-objdump --dwarf=frames %t-x86_64 2>&1 | FileCheck %s --implicit-check-not=error --implicit-check-not=warning
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## arm64
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# RUN: llvm-mc -filetype=obj -emit-compact-unwind-non-canonical=true -triple=arm64-apple-macos11.0 %s -o %t-arm64.o
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# RUN: %lld -arch arm64 -lSystem -lc++ %t-arm64.o -o %t-arm64 --bp-compression-sort=both
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# RUN: llvm-objdump --dwarf=frames %t-arm64 2>&1 | FileCheck %s --implicit-check-not=error --implicit-check-not=warning
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## Verify that __eh_frame starts with a CIE (not an FDE), contains both
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## CIEs and FDEs, and that no parse errors occur. The test uses two
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## personality functions, producing two CIE groups (CIE_A + FDEs, CIE_B +
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## FDEs). The --implicit-check-not flags above ensure no FDE fails to
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## resolve its CIE pointer.
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# CHECK: .eh_frame contents:
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# CHECK: {{[0-9a-f]+}} {{.*}} CIE
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# CHECK: {{[0-9a-f]+}} {{.*}} FDE
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# CHECK: {{[0-9a-f]+}} {{.*}} FDE
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# CHECK: {{[0-9a-f]+}} {{.*}} FDE
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# CHECK: {{[0-9a-f]+}} {{.*}} FDE
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.globl _my_personality_a, _my_personality_b, _main
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.text
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## _func_a uses cfi_escape to force DWARF unwind (can't be compact-encoded).
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## Uses personality A -> produces CIE_A + FDE for _func_a.
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.p2align 2
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_func_a:
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.cfi_startproc
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.cfi_personality 155, _my_personality_a
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.cfi_lsda 16, Lexception_a
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.cfi_def_cfa_offset 16
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.cfi_escape 0x2e, 0x10
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ret
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.cfi_endproc
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## _func_b also uses personality A + cfi_escape -> reuses CIE_A, new FDE.
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.p2align 2
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_func_b:
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.cfi_startproc
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.cfi_personality 155, _my_personality_a
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.cfi_lsda 16, Lexception_b
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.cfi_def_cfa_offset 16
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.cfi_escape 0x2e, 0x10
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ret
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.cfi_endproc
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## _func_c uses personality B + cfi_escape -> produces CIE_B + FDE.
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.p2align 2
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_func_c:
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.cfi_startproc
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.cfi_personality 155, _my_personality_b
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.cfi_lsda 16, Lexception_c
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.cfi_def_cfa_offset 16
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.cfi_escape 0x2e, 0x10
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ret
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.cfi_endproc
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## _func_d uses personality B + cfi_escape -> reuses CIE_B, new FDE.
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.p2align 2
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_func_d:
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.cfi_startproc
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.cfi_personality 155, _my_personality_b
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.cfi_lsda 16, Lexception_d
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.cfi_def_cfa_offset 16
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.cfi_escape 0x2e, 0x10
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ret
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.cfi_endproc
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.p2align 2
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_my_personality_a:
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ret
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.p2align 2
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_my_personality_b:
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ret
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.p2align 2
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_main:
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ret
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.section __TEXT,__gcc_except_tab
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GCC_except_table_a:
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Lexception_a:
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.byte 255
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GCC_except_table_b:
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Lexception_b:
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.byte 255
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GCC_except_table_c:
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Lexception_c:
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.byte 255
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GCC_except_table_d:
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Lexception_d:
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.byte 255
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.subsections_via_symbols
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