libsanitizer/sanitizer_common/sanitizer_syscall_generic.inc

   1 //===-- sanitizer_syscall_generic.inc ---------------------------*- C++ -*-===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // Generic implementations of internal_syscall* and internal_iserror.
   9 //
  10 //===----------------------------------------------------------------------===//
  11
  12 // NetBSD uses libc calls directly
  13 #if !SANITIZER_NETBSD
  14
  15 #if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_OPENBSD || SANITIZER_SOLARIS
  16 # define SYSCALL(name) SYS_ ## name
  17 #else
  18 # define SYSCALL(name) __NR_ ## name
  19 #endif
  20
  21 #if defined(__x86_64__) && (SANITIZER_FREEBSD || SANITIZER_MAC)
  22 # define internal_syscall __syscall
  23 # else
  24 # define internal_syscall syscall
  25 #endif
  26
  27 #endif
  28
  29 bool internal_iserror(uptr retval, int *rverrno) {
  30   if (retval == (uptr)-1) {
  31     if (rverrno)
  32       *rverrno = errno;
  33     return true;
  34   } else {
  35     return false;
  36   }
  37 }