/**************************************************************************** * syscall/syscall_funclookup.c * * Copyright (C) 2011-2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * 3. Neither the name NuttX 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include /* The content of this file is only meaningful during the kernel phase of * a kernel build. */ #if defined(CONFIG_LIB_SYSCALL) && defined(__KERNEL__) #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Errno access is awkward. We need to generate get_errno() and set_errno() * interfaces to support the system calls, even though we don't use them * ourself. * * The "normal" pre-processor defintions for these functions is in errno.h * but we need the internal function prototypes in nuttx/errno.h. */ #undef get_errno #undef set_errno #include #include /* clock_systimer is a special case: In the kernel build, proxying for * clock_systimer() must be handled specially. In the kernel phase of * the build, clock_systimer() is macro that simply accesses a global * variable. In the user phase of the kernel build, clock_systimer() * is a proxy function. * * In order to fill out the table g_funclookup[], this function will stand * in during the kernel phase of the build so that clock_systemer() will * have an address that can be included in the g_funclookup[] table. */ systime_t syscall_clock_systimer(void); /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Public Data ****************************************************************************/ /* Function lookup tables. This table is indexed by the system call numbers * defined above. Given the system call number, this table provides the * address of the corresponding system function. * * This table is only available during the kernel phase of a kernel build. */ const uintptr_t g_funclookup[SYS_nsyscalls] = { # undef SYSCALL_LOOKUP1 # define SYSCALL_LOOKUP1(f,n,p) (uintptr_t)f # undef SYSCALL_LOOKUP # define SYSCALL_LOOKUP(f,n,p) , (uintptr_t)f # include "syscall_lookup.h" }; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Public Functions ****************************************************************************/ #endif /* CONFIG_LIB_SYSCALL && __KERNEL__ */