acrn-hypervisor/hypervisor/arch/x86/lib/retpoline-thunk.S
Ziheng Li eb8bcb06b3 Update copyright year range in code headers
Modified the copyright year range in code, and corrected "int32_tel"
into "Intel" in two "hypervisor/include/debug/profiling.h" and
"hypervisor/include/debug/profiling_internal.h".

Tracked-On: #7559
Signed-off-by: Ziheng Li <ziheng.li@intel.com>
2022-07-15 11:48:35 +08:00

39 lines
685 B
ArmAsm

/*
* Copyright (C) 2018-2022 Intel Corporation.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
.macro retpoline_thunk reg:req
.align 8
.global __x86_indirect_thunk_\reg
__x86_indirect_thunk_\reg:
call 22f
11:
pause
lfence
jmp 11b
22:
mov %\reg, (%rsp)
ret
.endm
.section .retpoline_thunk, "ax"
retpoline_thunk rax
retpoline_thunk rbx
retpoline_thunk rcx
retpoline_thunk rdx
retpoline_thunk rdi
retpoline_thunk rsi
retpoline_thunk rbp
retpoline_thunk r8
retpoline_thunk r9
retpoline_thunk r10
retpoline_thunk r11
retpoline_thunk r12
retpoline_thunk r13
retpoline_thunk r14
retpoline_thunk r15