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Merge llvm, clang, lld, lldb, compiler-rt and libc++ r301441, and update
[FreeBSD/FreeBSD.git] / contrib / compiler-rt / lib / sanitizer_common / sanitizer_syscall_generic.inc
1 //===-- sanitizer_syscall_generic.inc ---------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // Generic implementations of internal_syscall and internal_iserror.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #if SANITIZER_FREEBSD || SANITIZER_MAC
15 # define SYSCALL(name) SYS_ ## name
16 #else
17 # define SYSCALL(name) __NR_ ## name
18 #endif
19
20 #if (SANITIZER_FREEBSD || SANITIZER_MAC) && defined(__x86_64__)
21 # define internal_syscall __syscall
22 # else
23 # define internal_syscall syscall
24 #endif
25
26 bool internal_iserror(uptr retval, int *rverrno) {
27   if (retval == (uptr)-1) {
28     if (rverrno)
29       *rverrno = errno;
30     return true;
31   } else {
32     return false;
33   }
34 }