add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/x86/lib/cmpxchg8b_emu.S
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@@ -1,10 +1,4 @@
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-/*
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- *	This program is free software; you can redistribute it and/or
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- *	modify it under the terms of the GNU General Public License
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- *	as published by the Free Software Foundation; version 2
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- *	of the License.
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- *
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- */
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 #include <linux/linkage.h>
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 #include <asm/export.h>
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@@ -19,7 +13,7 @@
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  * %ebx : low 32 bits of new value
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  * %ecx : high 32 bits of new value
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  */
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-ENTRY(cmpxchg8b_emu)
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+SYM_FUNC_START(cmpxchg8b_emu)
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 #
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 # Emulate 'cmpxchg8b (%esi)' on UP except we don't
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@@ -38,7 +32,7 @@
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 	movl %ecx, 4(%esi)
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 	popfl
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-	ret
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+	RET
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 .Lnot_same:
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 	movl  (%esi), %eax
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@@ -46,7 +40,7 @@
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 	movl 4(%esi), %edx
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 	popfl
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-	ret
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+	RET
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-ENDPROC(cmpxchg8b_emu)
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+SYM_FUNC_END(cmpxchg8b_emu)
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 EXPORT_SYMBOL(cmpxchg8b_emu)