derek.holloway
7502bf64a4
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64 lines
1.4 KiB
ArmAsm
64 lines
1.4 KiB
ArmAsm
# REQUIRES: system-linux
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## Check that BOLT correctly parses the Linux kernel .parainstructions section.
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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,--no-pie
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## Verify paravirtual bindings to instructions.
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# RUN: llvm-bolt %t.exe --print-normalized -o %t.out --keep-nops=0 | FileCheck %s
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# CHECK: BOLT-INFO: Linux kernel binary detected
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# CHECK: BOLT-INFO: parsed 2 paravirtual patch sites
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.rodata
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fptr:
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.quad 0
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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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.L1:
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call *fptr(%rip)
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# CHECK: call
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# CHECK-SAME: ParaSite: 1
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nop
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.L2:
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call *fptr(%rip)
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# CHECK: call
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# CHECK-SAME: ParaSite: 2
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ret
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.size _start, .-_start
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## Paravirtual patch sites.
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.section .parainstructions,"a",@progbits
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.balign 8
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.quad .L1 # instruction
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.byte 1 # type
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.byte 7 # length
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.balign 8
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.quad .L2 # instruction
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.byte 1 # type
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.byte 7 # length
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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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