2020-12-06 05:54:36 +00:00
|
|
|
/*
|
|
|
|
|
* Copyright (c) 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"
|
|
|
|
|
|
2020-12-06 09:02:25 +00:00
|
|
|
ALIAS(getcontext, libucontext_getcontext)
|
2021-01-08 09:30:50 +00:00
|
|
|
ALIAS(__getcontext, libucontext_getcontext)
|
2020-12-06 05:54:36 +00:00
|
|
|
|
2020-12-06 09:02:25 +00:00
|
|
|
FUNC(libucontext_getcontext)
|
2020-12-06 05:54:36 +00:00
|
|
|
move.l 4(%sp), %a0 /* load ucontext_t pointer from stack */
|
|
|
|
|
|
|
|
|
|
movem.l %d2-%d7, REG_OFFSET(REG_D2)(%a0) /* preserve $d2 through $d7 */
|
|
|
|
|
movem.l %a2-%a6, REG_OFFSET(REG_A2)(%a0) /* preserve $a2 through $a6 */
|
|
|
|
|
|
|
|
|
|
lea 4(%sp), %a1 /* load stack pointer into $a1 */
|
|
|
|
|
move.l %a1, REG_OFFSET(REG_SP)(%a0) /* store $a1 in ucontext */
|
|
|
|
|
move.l (%sp), REG_OFFSET(REG_PC)(%a0) /* store return address in ucontext's PC register */
|
|
|
|
|
|
|
|
|
|
clr.l %d0 /* return 0 */
|
|
|
|
|
rts
|
2020-12-06 09:02:25 +00:00
|
|
|
END(libucontext_getcontext)
|
