libucontext/arch/arm/getcontext.S

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ArmAsm
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/*
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* Copyright (c) 2018, 2020 Ariadne Conill <ariadne@dereferenced.org>
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*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* This software is provided 'as is' and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising
* from the use of this software.
*/
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#include "defs.h"
ALIAS(getcontext, libucontext_getcontext)
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FUNC(libucontext_getcontext)
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/* copy all of the current registers into the ucontext structure */
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add r1, r0, #REG_OFFSET(4)
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stmia r1, {r4-r12}
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str r13, [r0, #REG_OFFSET(13)]
str r14, [r0, #REG_OFFSET(15)]
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/* return 0 */
mov r0, #0
mov pc, lr
END(libucontext_getcontext)