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Diffstat (limited to 'examples/performance-thread/common/arch/x86/stack.h')
| -rw-r--r-- | examples/performance-thread/common/arch/x86/stack.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/examples/performance-thread/common/arch/x86/stack.h b/examples/performance-thread/common/arch/x86/stack.h new file mode 100644 index 00000000..98723ba3 --- /dev/null +++ b/examples/performance-thread/common/arch/x86/stack.h @@ -0,0 +1,94 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2015 Intel Corporation. All rights reserved. + * Copyright(c) Cavium, Inc. 2017. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Some portions of this software is derived from the + * https://github.com/halayli/lthread which carrys the following license. + * + * Copyright (C) 2012, Hasan Alayli <halayli@gmail.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + + +#ifndef STACK_H +#define STACK_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include "lthread_int.h" + +/* + * Sets up the initial stack for the lthread. + */ +static inline void +arch_set_stack(struct lthread *lt, void *func) +{ + char *stack_top = (char *)(lt->stack) + lt->stack_size; + void **s = (void **)stack_top; + + /* set initial context */ + s[-3] = NULL; + s[-2] = (void *)lt; + lt->ctx.rsp = (void *)(stack_top - (4 * sizeof(void *))); + lt->ctx.rbp = (void *)(stack_top - (3 * sizeof(void *))); + lt->ctx.rip = func; +} + +#ifdef __cplusplus +} +#endif + +#endif /* STACK_H_ */ |