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

diff --git a/lib/ExecutionEngine/JIT/JITEmitter.cpp b/lib/ExecutionEngine/JIT/JITEmitter.cpp
index 982eadd12fa6ad24cc650aa86f55fbde5c84ca30..d25aaa3e4a3d0e52444178cb2d3f8e5022134b8b 100644 (file)
--- 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