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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. #include <synch/futex.h>
  40.  
  41. static __native sys_io(int fd, const void * buf, size_t count) {
  42.    
  43.     // TODO: buf sanity checks and a lot of other stuff ...
  44.  
  45.     size_t i;
  46.    
  47.     for (i = 0; i < count; i++)
  48.         putchar(((char *) buf)[i]);
  49.    
  50.     return count;
  51. }
  52.  
  53. static __native sys_mmap(void *address, size_t size, int flags)
  54. {
  55.     if (as_area_create(AS, flags, size, (__address) address))
  56.         return (__native) address;
  57.     else
  58.         return (__native) -1;
  59. }
  60.  
  61. static __native sys_mremap(void *address, size_t size, int flags)
  62. {
  63.     return as_remap(AS, (__address) address, size, 0);
  64. }
  65.  
  66. /** Dispatch system call */
  67. __native syscall_handler(__native a1, __native a2, __native a3,
  68.              __native a4, __native id)
  69. {
  70.     if (id < SYSCALL_END)
  71.         return syscall_table[id](a1,a2,a3,a4);
  72.     else
  73.         panic("Undefined syscall %d", id);
  74. }
  75.  
  76. syshandler_t syscall_table[SYSCALL_END] = {
  77.     sys_io,
  78.     sys_tls_set,
  79.     sys_thread_create,
  80.     sys_thread_exit,
  81.     sys_futex_sleep,
  82.     sys_futex_wakeup,
  83.     sys_mmap,
  84.     sys_mremap,
  85.     sys_ipc_call_sync_fast,
  86.     sys_ipc_call_sync,
  87.     sys_ipc_call_async_fast,
  88.     sys_ipc_call_async,
  89.     sys_ipc_answer_fast,
  90.     sys_ipc_answer,
  91.     sys_ipc_forward_fast,
  92.     sys_ipc_wait_for_call,
  93.     sys_ipc_hangup
  94. };
  95.