//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "jit"
-#ifndef _POSIX_MAPPED_FILES
-#define _POSIX_MAPPED_FILES
-#endif
#include "JIT.h"
#include "llvm/Constant.h"
#include "llvm/Module.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/Target/TargetData.h"
-#include "Support/Debug.h"
-#include "Support/Statistic.h"
-#include "Config/unistd.h"
-#include "Config/sys/mman.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/Support/SystemUtils.h"
using namespace llvm;
namespace {
};
}
-// getMemory - Return a pointer to the specified number of bytes, which is
-// mapped as executable readable and writable.
-static void *getMemory(unsigned NumBytes) {
- if (NumBytes == 0) return 0;
- static const long pageSize = sysconf(_SC_PAGESIZE);
- unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
-
-/* FIXME: This should use the proper autoconf flags */
-#if defined(i386) || defined(__i386__) || defined(__x86__)
- /* Linux and *BSD tend to have these flags named differently. */
-#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
-# define MAP_ANONYMOUS MAP_ANON
-#endif /* defined(MAP_ANON) && !defined(MAP_ANONYMOUS) */
-#elif defined(sparc) || defined(__sparc__) || defined(__sparcv9)
-/* nothing */
-#else
- std::cerr << "This architecture is not supported by the JIT!\n";
- abort();
- return 0;
-#endif
-
-#ifdef HAVE_MMAP
- int fd = -1;
-#if defined(__linux__)
- fd = 0;
-#endif
-
- unsigned mmapFlags = MAP_PRIVATE|MAP_ANONYMOUS;
-#ifdef MAP_NORESERVE
- mmapFlags |= MAP_NORESERVE;
-#endif
-
- void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
- mmapFlags, fd, 0);
- if (pa == MAP_FAILED) {
- perror("mmap");
- abort();
- }
- return pa;
-#else
- std::cerr << "Do not know how to allocate mem for the JIT without mmap!\n";
- abort();
- return 0;
-#endif
-}
-
JITMemoryManager::JITMemoryManager() {
// Allocate a 16M block of memory...
- MemBase = (unsigned char*)getMemory(16 << 20);
+ MemBase = (unsigned char*)AllocateRWXMemory(16 << 20);
FunctionBase = MemBase + 512*1024; // Use 512k for stubs
// Allocate stubs backwards from the function base, allocate functions forward