derek.holloway
7502bf64a4
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34 lines
1.4 KiB
ArmAsm
34 lines
1.4 KiB
ArmAsm
## Test that BOLT errs when detecting the target
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## of a direct call/branch is a invalid instruction
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# REQUIRES: system-linux
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# RUN: rm -rf %t && mkdir -p %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o main.o
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# RUN: %clang %cflags -pie -Wl,-q %t/main.o -o main.exe
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# RUN: llvm-bolt %t/main.exe -o %t/main.exe.bolt -lite=0 2>&1 | FileCheck %s --check-prefix=CHECK-TARGETS
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# CHECK-TARGETS: BOLT-WARNING: corrupted control flow detected in function external_corrupt: an external branch/call targets an invalid instruction in function external_func at address 0x{{[0-9a-f]+}}; ignoring both functions
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# CHECK-TARGETS: BOLT-WARNING: corrupted control flow detected in function internal_corrupt: an internal branch/call targets an invalid instruction at address 0x{{[0-9a-f]+}}; ignoring this function
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.globl internal_corrupt
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.type internal_corrupt,@function
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internal_corrupt:
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jb data_in_code + 1 # targeting the data in code, and jump into the middle of 'xorb' instruction
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data_in_code:
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.byte 0x34, 0x01 # data in code, will be disassembled as 'xorb 0x1, %al'
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.size internal_corrupt,.-internal_corrupt
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.globl external_corrupt
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.type external_corrupt,@function
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external_corrupt:
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jb external_func + 1 # targeting the middle of normal instruction externally
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.size external_corrupt,.-external_corrupt
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.globl external_func
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.type external_func,@function
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external_func:
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addq $1, %rax # normal instruction
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.size external_func,.-external_func
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