libucontext/arch/loongarch64/setcontext.S

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/*
* Copyright (c) 2021 Peng Fan <fanpeng@loongson.cn>
*
* 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.
*/
#define LOCALSZ (1)
#include "defs.h"
ALIAS(setcontext, libucontext_setcontext)
FUNC(libucontext_setcontext)
PUSH_FRAME(libucontext_setcontext)
/* move the context to $v0, in LA, $v0 = $a0 = $4 */
move $t5, $a0
/* load the registers */
ld.d $a0, $t5, REG_OFFSET(4)
ld.d $a1, $t5, REG_OFFSET(5)
ld.d $a2, $t5, REG_OFFSET(6)
ld.d $a3, $t5, REG_OFFSET(7)
ld.d $a4, $t5, REG_OFFSET(8)
ld.d $a5, $t5, REG_OFFSET(9)
ld.d $a6, $t5, REG_OFFSET(10)
ld.d $a7, $t5, REG_OFFSET(11)
ld.d $s0, $t5, REG_OFFSET(23)
ld.d $s1, $t5, REG_OFFSET(24)
ld.d $s2, $t5, REG_OFFSET(25)
ld.d $s3, $t5, REG_OFFSET(26)
ld.d $s4, $t5, REG_OFFSET(27)
ld.d $s5, $t5, REG_OFFSET(28)
ld.d $s6, $t5, REG_OFFSET(29)
ld.d $s7, $t5, REG_OFFSET(30)
ld.d $s8, $t5, REG_OFFSET(31)
ld.d $sp, $t5, REG_OFFSET(3)
ld.d $fp, $t5, REG_OFFSET(22)
ld.d $ra, $t5, REG_OFFSET(1)
ld.d $t8, $t5, (MCONTEXT_PC)
jr $t8
move $v0, $zero
POP_FRAME(libucontext_setcontext)
END(libucontext_setcontext)