hosted/syscall-stubs.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef SERVICE
#error syscall-stubs.h requires SERVICE to be defined
#endif
#ifndef SERVICE_ERROR
#error syscall-stubs.h requires SERVICE_ERROR to be defined
#endif
#ifndef SERVICE_INIT
#error syscall-stubs.h requires SERVICE_INIT to be defined
#endif
 
typedef long (*syscall_caller_t)(long service, long function, long* error, long p1, long p2,
                                 long p3, long p4, long p5, long p6);
 
static syscall_caller_t __hosted_syscall = (syscall_caller_t)0x399000;
 
static long syscall6(long function, long p1, long p2, long p3, long p4, long p5, long p6) {
  SERVICE_INIT;
  long error = 0;
  long result = __hosted_syscall(SERVICE, function, &error, p1, p2, p3, p4, p5, p6);
  if (error) {
    SERVICE_ERROR = error;
  }
  return result;
}
 
static long syscall6_err(long function, long p1, long p2, long p3, long p4, long p5, long p6,
                         long* err) {
  *err = 0;
  return __hosted_syscall(SERVICE, function, err, p1, p2, p3, p4, p5, p6);
}
 
static long syscall6_for_service_err(long service, long function, long p1, long p2, long p3,
                                     long p4, long p5, long p6, long* err) {
  return __hosted_syscall(service, function, err, p1, p2, p3, p4, p5, p6);
}
 
static long syscall0(long function) {
  return syscall6(function, 0, 0, 0, 0, 0, 0);
}
 
static long syscall1(long function, long p1) {
  return syscall6(function, p1, 0, 0, 0, 0, 0);
}
 
static long syscall2(long function, long p1, long p2) {
  return syscall6(function, p1, p2, 0, 0, 0, 0);
}
 
static long syscall3(long function, long p1, long p2, long p3) {
  return syscall6(function, p1, p2, p3, 0, 0, 0);
}
 
static long syscall4(long function, long p1, long p2, long p3, long p4) {
  return syscall6(function, p1, p2, p3, p4, 0, 0);
}
 
static long syscall5(long function, long p1, long p2, long p3, long p4, long p5) {
  return syscall6(function, p1, p2, p3, p4, p5, 0);
}