forked from ariadne/libucontext
31 lines
973 B
ArmAsm
31 lines
973 B
ArmAsm
/*
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* Copyright (c) 2018 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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#include "defs.h"
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.globl __start_context;
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__start_context:
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basr %r14, %r7 /* run function pointer (%r7) and return here */
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ltgr %r8, %r8 /* check to see if uc_link (%r8) is null */
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jz no_linked_context /* if we have no linked context, prepare to exit */
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lgr %r2, %r8 /* copy the uc_link structure address to %r2 */
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br %r9 /* call setcontext */
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no_linked_context:
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la %r2, 0 /* return 0 */
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brasl %r14, exit@plt /* call exit */
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j .+2 /* crash if exit returns */
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