forked from ariadne/libucontext
51 lines
1.5 KiB
ArmAsm
51 lines
1.5 KiB
ArmAsm
/*
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* Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* This software is provided 'as is' and without any warranty, express or
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* implied. In no event shall the authors be liable for any damages arising
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* from the use of this software.
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*/
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LOCALSZ = 1
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#include "defs.h"
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ALIAS(setcontext, __setcontext)
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FUNC(__setcontext)
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PUSH_FRAME(__setcontext)
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/* move the context to $v0 */
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move $v0, $a0
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/* load the registers */
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lw $a0, ((4 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $a1, ((5 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $a2, ((6 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $a3, ((7 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s0, ((16 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s1, ((17 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s2, ((18 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s3, ((19 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s4, ((20 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s5, ((21 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s6, ((22 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $s7, ((23 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $gp, ((28 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $sp, ((29 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $fp, ((30 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $ra, ((31 * REG_SZ) + MCONTEXT_GREGS)($v0)
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lw $t9, (MCONTEXT_PC)($v0)
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move $v0, $zero
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jr $t9
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POP_FRAME(__setcontext)
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END(__setcontext)
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