libucontext/arch/mips64/setcontext.S

55 lines
1.7 KiB
ArmAsm

/*
* 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.
*/
LOCALSZ = 1
#include "defs.h"
ALIAS(setcontext, __setcontext)
FUNC(__setcontext)
PUSH_FRAME(__setcontext)
/* move the context to $v0 */
move $v0, $a0
/* load the registers */
ld $a0, ((4 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $a1, ((5 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $a2, ((6 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $a3, ((7 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $a4, ((8 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $a5, ((9 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $a6, ((10 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $a7, ((11 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s0, ((16 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s1, ((17 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s2, ((18 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s3, ((19 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s4, ((20 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s5, ((21 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s6, ((22 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $s7, ((23 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $gp, ((28 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $sp, ((29 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $fp, ((30 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $ra, ((31 * REG_SZ) + MCONTEXT_GREGS)($v0)
ld $t9, (MCONTEXT_PC)($v0)
move $v0, $zero
jr $t9
POP_FRAME(__setcontext)
END(__setcontext)