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 09:03:07 +00:00
|
|
|
ALIAS(setcontext, libucontext_setcontext)
|
2021-01-08 09:30:50 +00:00
|
|
|
ALIAS(__setcontext, libucontext_setcontext)
|
2020-12-06 05:54:36 +00:00
|
|
|
|
2020-12-06 09:03:07 +00:00
|
|
|
FUNC(libucontext_setcontext)
|
2020-12-06 05:54:36 +00:00
|
|
|
move.l 4(%sp), %a0 /* load ucontext_t pointer from stack */
|
|
|
|
|
|
|
|
|
|
move.l REG_OFFSET(REG_SP)(%a0), %sp /* load new stack pointer */
|
|
|
|
|
|
|
|
|
|
movem.l REG_OFFSET(REG_D2)(%a0), %d2-%d7 /* load $d2 through $d7 */
|
|
|
|
|
movem.l REG_OFFSET(REG_A2)(%a0), %a2-%a6 /* load $a2 through $a6 */
|
|
|
|
|
|
|
|
|
|
clr.l %d0 /* clear $d0 */
|
|
|
|
|
|
|
|
|
|
move.l REG_OFFSET(REG_PC)(%a0), %a1 /* load jump target */
|
|
|
|
|
|
|
|
|
|
jmp (%a1) /* jump to *$a1 */
|
2020-12-06 09:03:07 +00:00
|
|
|
END(libucontext_setcontext)
|
