derek.holloway
7502bf64a4
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34 lines
1.1 KiB
ArmAsm
34 lines
1.1 KiB
ArmAsm
# This test checks the situation where LongJmp adds a stub targeting an ignored (skipped) function.
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# As far_away_func does not have a nop at the entry, BOLT cannot safely patch it.
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# REQUIRES: system-linux, asserts
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# RUN: llvm-mc -filetype=obj -triple aarch64-unknown-unknown \
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# RUN: -mattr=+bti -aarch64-mark-bti-property %s -o %t.o
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# RUN: %clang %cflags -O0 %t.o -o %t.exe -Wl,-q -Wl,-z,force-bti
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# RUN: not llvm-bolt %t.exe -o %t.bolt \
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# RUN: --align-text=0x10000000 --skip-funcs=far_away_func 2>&1 | FileCheck %s
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# CHECK: BOLT-ERROR: Cannot add BTI to function without CFG far_away_func. Recompile the binary using -fpatchable-function-entry 1 to include a nop at the entry
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.section .text
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.align 4
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.global _start
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.type _start, %function
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_start:
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bti c
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bl far_away_func
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ret
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# This is skipped, so it stays in the .bolt.org.text.
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# The .text produced by BOLT is aligned to 0x10000000,
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# so _start will need a stub to jump here.
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.global far_away_func
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.type far_away_func, %function
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far_away_func:
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add x0, x0, #1
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ret
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.reloc 0, R_AARCH64_NONE
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