6e8a1a45a7
This makes it easier to handle differences (e.g. of exception table entry size) between versions of Linux kernel
50 lines
1.2 KiB
ArmAsm
50 lines
1.2 KiB
ArmAsm
# REQUIRES: system-linux
|
|
|
|
## Check that BOLT correctly parses and updates the Linux kernel .smp_locks
|
|
## section.
|
|
|
|
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
|
|
# RUN: %clang %cflags -nostdlib %t.o -o %t.exe \
|
|
# RUN: -Wl,--image-base=0xffffffff80000000,--no-dynamic-linker,--no-eh-frame-hdr,--no-pie
|
|
# RUN: llvm-bolt %t.exe --print-normalized --keep-nops=0 --bolt-info=0 -o %t.out \
|
|
# RUN: 2>&1 | FileCheck %s
|
|
|
|
## Check the output of BOLT with NOPs removed.
|
|
|
|
# RUN: llvm-bolt %t.out -o %t.out.1 --print-normalized 2>&1 | FileCheck %s
|
|
|
|
# CHECK: BOLT-INFO: Linux kernel binary detected
|
|
# CHECK: BOLT-INFO: parsed 2 SMP lock entries
|
|
|
|
.text
|
|
.globl _start
|
|
.type _start, %function
|
|
_start:
|
|
nop
|
|
nop
|
|
.L0:
|
|
lock incl (%rdi)
|
|
# CHECK: lock {{.*}} SMPLock
|
|
.L1:
|
|
lock orb $0x40, 0x4(%rsi)
|
|
# CHECK: lock {{.*}} SMPLock
|
|
ret
|
|
.size _start, .-_start
|
|
|
|
.section .smp_locks,"a",@progbits
|
|
.long .L0 - .
|
|
.long .L1 - .
|
|
|
|
## Linux kernel version
|
|
.rodata
|
|
.align 16
|
|
.globl linux_banner
|
|
.type linux_banner, @object
|
|
linux_banner:
|
|
.string "Linux version 6.6.61\n"
|
|
.size linux_banner, . - linux_banner
|
|
|
|
## Fake Linux Kernel sections.
|
|
.section __ksymtab,"a",@progbits
|
|
.section __ksymtab_gpl,"a",@progbits
|