mirror of https://gitee.com/openkylin/linux.git
24 lines
803 B
C
24 lines
803 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_STATIC_CALL_H
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#define _ASM_STATIC_CALL_H
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#include <asm/text-patching.h>
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/*
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* For CONFIG_HAVE_STATIC_CALL, this is a permanent trampoline which
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* does a direct jump to the function. The direct jump gets patched by
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* static_call_update().
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*/
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#define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func) \
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asm(".pushsection .text, \"ax\" \n" \
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".align 4 \n" \
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".globl " STATIC_CALL_TRAMP_STR(name) " \n" \
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STATIC_CALL_TRAMP_STR(name) ": \n" \
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" .byte 0xe9 # jmp.d32 \n" \
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" .long " #func " - (. + 4) \n" \
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".type " STATIC_CALL_TRAMP_STR(name) ", @function \n" \
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".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
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".popsection \n")
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#endif /* _ASM_STATIC_CALL_H */
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