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6e8a1a45a7
This makes it easier to handle differences (e.g. of exception table entry size) between versions of Linux kernel
74 lines
1.7 KiB
ArmAsm
74 lines
1.7 KiB
ArmAsm
# REQUIRES: system-linux
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## Check that BOLT correctly parses the Linux kernel exception table.
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# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
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# RUN: %clang %cflags -nostdlib %t.o -o %t.exe \
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# RUN: -Wl,--image-base=0xffffffff80000000,--no-dynamic-linker,--no-eh-frame-hdr
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## Verify exception bindings to instructions.
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# RUN: llvm-bolt %t.exe --print-normalized -o %t.out --keep-nops=0 \
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# RUN: --bolt-info=0 | FileCheck %s
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## Verify the bindings again on the rewritten binary with nops removed.
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# RUN: llvm-bolt %t.out -o %t.out.1 --print-normalized | FileCheck %s
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# CHECK: BOLT-INFO: Linux kernel binary detected
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# CHECK: BOLT-INFO: parsed 2 exception table entries
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.text
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.globl _start
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.type _start, %function
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_start:
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# CHECK: Binary Function "_start"
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nop
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.L0:
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mov (%rdi), %rax
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# CHECK: mov
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# CHECK-SAME: ExceptionEntry: 1 # Fixup: [[FIXUP:[a-zA-Z0-9_]+]]
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nop
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.L1:
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mov (%rsi), %rax
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# CHECK: mov
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# CHECK-SAME: ExceptionEntry: 2 # Fixup: [[FIXUP]]
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nop
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ret
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.LF0:
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# CHECK: Secondary Entry Point: [[FIXUP]]
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jmp foo
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.size _start, .-_start
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.globl foo
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.type foo, %function
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foo:
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ret
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.size foo, .-foo
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## Exception table.
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.section __ex_table,"a",@progbits
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.align 4
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.long .L0 - . # instruction
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.long .LF0 - . # fixup
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.long 0 # data
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.long .L1 - . # instruction
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.long .LF0 - . # fixup
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.long 0 # data
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## Linux kernel version
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.rodata
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.align 16
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.globl linux_banner
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.type linux_banner, @object
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linux_banner:
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.string "Linux version 6.6.61\n"
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.size linux_banner, . - linux_banner
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## Fake Linux Kernel sections.
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.section __ksymtab,"a",@progbits
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.section __ksymtab_gpl,"a",@progbits
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