libucontext/arch/arm/getcontext.S

28 lines
799 B
ArmAsm

/*
* Copyright (c) 2018, 2020 Ariadne Conill <ariadne@dereferenced.org>
*
* 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.
*/
#include "defs.h"
ALIAS(getcontext, __getcontext)
FUNC(__getcontext)
/* copy all of the current registers into the ucontext structure */
add r1, r0, #REG_OFFSET(4)
stmia r1, {r4-r12}
str r13, [r0, #REG_OFFSET(13)]
str r14, [r0, #REG_OFFSET(15)]
/* return 0 */
mov r0, #0
mov pc, lr
END(__getcontext)