From 89e8be00c5f410d2238d9ad771831684a2b3a314 Mon Sep 17 00:00:00 2001
From: Misha Brukman <brukman+llvm@gmail.com>
Date: Tue, 29 Jul 2003 16:57:16 +0000
Subject: [PATCH] * Stop hard-coding a value for beginning of emitted code on
 Sparc since we can   now handle far calls (i.e., beyond the 30-bit limit in
 call instructions). * As a side-effect, this allows us to unify and clean up
 the mmap() call and   code around it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7381 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/ExecutionEngine/JIT/JITEmitter.cpp | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/lib/ExecutionEngine/JIT/JITEmitter.cpp b/lib/ExecutionEngine/JIT/JITEmitter.cpp
index 9e62f13ce73..476ca45a229 100644
--- a/lib/ExecutionEngine/JIT/JITEmitter.cpp
+++ b/lib/ExecutionEngine/JIT/JITEmitter.cpp
@@ -76,20 +76,16 @@ static void *getMemory(unsigned NumPages) {
   /* Linux and *BSD tend to have these flags named differently. */
 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
 # define MAP_ANONYMOUS MAP_ANON
-#endif
-  pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
-            MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);  /* fd = 0  */
+#endif /* defined(MAP_ANON) && !defined(MAP_ANONYMOUS) */
+#define fd  0
 #elif defined(sparc) || defined(__sparc__) || defined(__sparcv9)
-  static unsigned long Counter = 0;
-  pa = mmap((void*)(0x140000000UL+Counter), pageSize*NumPages,
-            PROT_READ|PROT_WRITE|PROT_EXEC,
-            MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); /* fd = -1 */
-  Counter += pageSize*NumPages;
+#define fd -1
 #else
-  std::cerr << "This architecture is not supported by the JIT\n";
+  std::cerr << "This architecture is not supported by the JIT!\n";
   abort();
 #endif
-
+  pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
+            MAP_PRIVATE|MAP_ANONYMOUS, fd, 0);
   if (pa == MAP_FAILED) {
     perror("mmap");
     abort();