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  1. /*
  2.  * Copyright (C) 2005 Martin Decky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <syscall/syscall.h>
  30. #include <proc/thread.h>
  31. #include <mm/as.h>
  32. #include <print.h>
  33. #include <putchar.h>
  34. #include <errno.h>
  35. #include <proc/task.h>
  36. #include <arch.h>
  37. #include <debug.h>
  38. #include <ipc/sysipc.h>
  39.  
  40. static __native sys_io(int fd, const void * buf, size_t count) {
  41.    
  42.     // TODO: buf sanity checks and a lot of other stuff ...
  43.  
  44.     size_t i;
  45.    
  46.     for (i = 0; i < count; i++)
  47.         putchar(((char *) buf)[i]);
  48.    
  49.     return count;
  50. }
  51.  
  52. static __native sys_mmap(void *address, size_t size, int flags)
  53. {
  54.     if (as_area_create(AS, flags, size, (__address) address))
  55.         return (__native) address;
  56.     else
  57.         return (__native) -1;
  58. }
  59.  
  60. static __native sys_mremap(void *address, size_t size, int flags)
  61. {
  62.     return as_remap(AS, (__address) address, size, 0);
  63. }
  64.  
  65. /** Dispatch system call */
  66. __native syscall_handler(__native a1, __native a2, __native a3,
  67.              __native a4, __native id)
  68. {
  69.     if (id < SYSCALL_END)
  70.         return syscall_table[id](a1,a2,a3,a4);
  71.     else
  72.         panic("Undefined syscall %d", id);
  73. }
  74.  
  75. syshandler_t syscall_table[SYSCALL_END] = {
  76.     sys_io,
  77.     sys_thread_create,
  78.     sys_thread_exit,
  79.     sys_mmap,
  80.     sys_mremap,
  81.     sys_ipc_call_sync_fast,
  82.     sys_ipc_call_sync,
  83.     sys_ipc_call_async_fast,
  84.     sys_ipc_call_async,
  85.     sys_ipc_answer_fast,
  86.     sys_ipc_answer,
  87.     sys_ipc_forward_fast,
  88.     sys_ipc_wait_for_call,
  89.     sys_ipc_hangup
  90. };
  91.