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m68k: add startcontext trampoline

master
Ariadne Conill 2020-12-06 02:24:49 -06:00
parent 5f6135c0f9
commit 15ba7b039c
1 changed files with 26 additions and 0 deletions
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arch/m68k/startcontext.S Normal file
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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.
*/
#include "defs.h"
FUNC(__start_context)
lea (%sp, %d7.l * REG_SZ), %sp /* place uc_link in $sp */
tst.l (%sp) /* test next content for NULL */
jeq no_linked_context
jbsr __setcontext /* call setcontext */
move.l %d0, (%sp)
no_linked_context:
jbsr exit
END(__start_context)