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d14a7dbdd2
for gcc version > 7.3, enable CONFIG_RETPOLINE Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
62 lines
2.1 KiB
ArmAsm
62 lines
2.1 KiB
ArmAsm
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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.macro retpoline_thunk reg:req
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.align 8
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.global __x86_indirect_thunk_\reg
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__x86_indirect_thunk_\reg:
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call 22f
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11:
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pause
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jmp 11b
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22:
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mov %\reg, (%rsp)
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ret
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.endm
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.section .retpoline_thunk, "ax"
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retpoline_thunk rax
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retpoline_thunk rbx
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retpoline_thunk rcx
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retpoline_thunk rdx
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retpoline_thunk rdi
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retpoline_thunk rsi
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retpoline_thunk rbp
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retpoline_thunk r8
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retpoline_thunk r9
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retpoline_thunk r10
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retpoline_thunk r11
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retpoline_thunk r12
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retpoline_thunk r13
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retpoline_thunk r14
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retpoline_thunk r15
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