libucontext/arch/mips/getcontext.S

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/*
* 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(getcontext, __getcontext)
FUNC(__getcontext)
/* copy $gp, $sp, $fp to temporary registers so we don't clobber them */
move $a2, $gp
move $a3, $sp
move $a1, $fp
PUSH_FRAME(__getcontext)
/* set registers */
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sw $s0, REG_OFFSET(16)($a0)
sw $s1, REG_OFFSET(17)($a0)
sw $s2, REG_OFFSET(18)($a0)
sw $s3, REG_OFFSET(19)($a0)
sw $s4, REG_OFFSET(20)($a0)
sw $s5, REG_OFFSET(21)($a0)
sw $s6, REG_OFFSET(22)($a0)
sw $s7, REG_OFFSET(23)($a0)
sw $a2, REG_OFFSET(28)($a0)
sw $a3, REG_OFFSET(29)($a0)
sw $a1, REG_OFFSET(30)($a0)
sw $ra, REG_OFFSET(31)($a0)
sw $ra, (MCONTEXT_PC)($a0)
POP_FRAME(__getcontext)
jr $ra
END(__getcontext)