From 364f86d4dff7ec203afcef6ae09f64c468e57804 Mon Sep 17 00:00:00 2001
From: Brian Gaeke <gaeke@uiuc.edu>
Date: Sat, 11 Oct 2003 03:51:18 +0000
Subject: [PATCH] Make mmap's fd for anonymous memory acquisition default to
 -1, except on Linux. This is consistent with what FreeBSD and Solaris both
 want. This makes the JIT work on FreeBSD 5.1-RELEASE. Whee.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9045 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/ExecutionEngine/JIT/JITEmitter.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/ExecutionEngine/JIT/JITEmitter.cpp b/lib/ExecutionEngine/JIT/JITEmitter.cpp
index 982eadd12fa..d25aaa3e4a3 100644
--- a/lib/ExecutionEngine/JIT/JITEmitter.cpp
+++ b/lib/ExecutionEngine/JIT/JITEmitter.cpp
@@ -56,13 +56,18 @@ static void *getMemory(unsigned NumBytes) {
 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
 # define MAP_ANONYMOUS MAP_ANON
 #endif /* defined(MAP_ANON) && !defined(MAP_ANONYMOUS) */
-#define fd  0
 #elif defined(sparc) || defined(__sparc__) || defined(__sparcv9)
-#define fd -1
+/* nothing */
 #else
   std::cerr << "This architecture is not supported by the JIT!\n";
   abort();
 #endif
+
+#if defined(__linux__)
+#define fd 0
+#else
+#define fd -1
+#endif
   
   unsigned mmapFlags = MAP_PRIVATE|MAP_ANONYMOUS;
 #ifdef MAP_NORESERVE