# syscall_new.c

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    00001 /*****************************************************************************************
    00002  Copyright (c) 2002-2004 The UbixOS Project
    00003  All rights reserved.
    00004
    00005  Redistribution and use in source and binary forms, with or without modification, are
    00006  permitted provided that the following conditions are met:
    00007
    00008  Redistributions of source code must retain the above copyright notice, this list of
    00009  conditions, the following disclaimer and the list of authors.  Redistributions in binary
    00010  form must reproduce the above copyright notice, this list of conditions, the following
    00011  disclaimer and the list of authors in the documentation and/or other materials provided
    00012  with the distribution. Neither the name of the UbixOS Project nor the names of its
    00013  contributors may be used to endorse or promote products derived from this software
    00014  without specific prior written permission.
    00015
    00016  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
    00017  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    00018  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
    00019  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    00020  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
    00021  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    00022  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
    00023  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    00024  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00025
    00026  $Id: syscall__new_8c-source.html 88 2016-01-12 00:11:29Z reddawg $
    00027
    00028 *****************************************************************************************/
    00029
    00030 #include <ubixos/syscalls_new.h>
    00031 #include <ubixos/sched.h>
    00032 #include <ubixos/types.h>
    00033 #include <ubixos/endtask.h>
    00034 #include <ubixos/spinlock.h>
    00035 #include <sys/trap.h>
    00036 #include <lib/string.h>
    00037 #include <lib/kprintf.h>
    00038
    00039 spinLock_t Master = SPIN_LOCK_INITIALIZER;
    00040
    00041 void syscall(struct trapframe frame) {
    00042   uInt32 code = 0x0;
    00043   caddr_t params;
    00044   struct thread *td = &_current->td;
    00045   int args[8];
    00046   int error = 0x0;
    00047
    00048   params = (caddr_t)frame.tf_esp + sizeof(int);
    00049
    00050   code = frame.tf_eax;
    00051   if (code == 198) {
    00052     memcpy(&code,params,sizeof(int));
    00053     params += sizeof(quad_t);
    00054     }
    00055
    00056   if (code > totalCalls_new) {
    00057     kprintf("Invalid Call: [%i]\n",frame.tf_eax);
    00058     }
    00059   else if ((uInt32)systemCalls_new[code] == 0x0) {
    00060     kprintf("Invalid Call: [%i][0x%X]\n",code,(uInt32)systemCalls_new[code]);
    00061     frame.tf_eax = -1;
    00062     frame.tf_edx = 0x0;
    00063     }
    00064   else {
    00065     memcpy(args,params,8 * sizeof(int));
    00066     td->td_retval[0] = 0;
    00067     td->td_retval[1] = frame.tf_edx;
    00068
    00069     error = (int)systemCalls_new[code](td,args);
    00070     switch (error) {
    00071       case 0:
    00072         frame.tf_eax = td->td_retval[0];
    00073         frame.tf_edx = td->td_retval[1];
    00074         frame.tf_eflags &= ~PSL_C;
    00075         break;
    00076       case ERESTART:
    00077         frame.tf_eip -= frame.tf_err;
    00078         break;
    00079       case EJUSTRETURN:
    00080         break;
    00081       default:
    00082         frame.tf_eax = error;
    00083         frame.tf_eflags |= PSL_C;
    00084         break;
    00085
    00086       }
    00087     }
    00088   }
    00089
    00090
    00091 /***
    00092  END
    00093  ***/
    00094