4 * Copyright(c) 2015 Intel Corporation. All rights reserved.
5 * Copyright(c) Cavium, Inc. 2017.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
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19 * contributors may be used to endorse or promote products derived
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32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 * Some portions of this software is derived from the
37 * https://github.com/halayli/lthread which carrys the following license.
39 * Copyright (C) 2012, Hasan Alayli <halayli@gmail.com>
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
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48 * documentation and/or other materials provided with the distribution.
50 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
71 #include "lthread_int.h"
74 * Sets up the initial stack for the lthread.
77 arch_set_stack(struct lthread *lt, void *func)
79 char *stack_top = (char *)(lt->stack) + lt->stack_size;
80 void **s = (void **)stack_top;
82 /* set initial context */
85 lt->ctx.rsp = (void *)(stack_top - (4 * sizeof(void *)));
86 lt->ctx.rbp = (void *)(stack_top - (3 * sizeof(void *)));