diff options
| -rw-r--r-- | include/llvm/Support/SystemUtils.h | 7 | ||||
| -rw-r--r-- | lib/Support/SystemUtils.cpp | 61 |
2 files changed, 0 insertions, 68 deletions
diff --git a/include/llvm/Support/SystemUtils.h b/include/llvm/Support/SystemUtils.h index aea7df8..e8ead13 100644 --- a/include/llvm/Support/SystemUtils.h +++ b/include/llvm/Support/SystemUtils.h @@ -53,13 +53,6 @@ int RunProgramWithTimeout(const std::string &ProgramPath, const char **Args, /// int ExecWait (const char * const argv[], const char * const envp[]); -/// AllocateRWXMemory - Allocate a slab of memory with read/write/execute -/// permissions. This is typically used for JIT applications where we want -/// to emit code to the memory then jump to it. Getting this type of memory -/// is very OS specific. -/// -void *AllocateRWXMemory(unsigned NumBytes); - } // End llvm namespace #endif diff --git a/lib/Support/SystemUtils.cpp b/lib/Support/SystemUtils.cpp index 3b529df..ba43306 100644 --- a/lib/Support/SystemUtils.cpp +++ b/lib/Support/SystemUtils.cpp @@ -286,64 +286,3 @@ int llvm::ExecWait(const char * const old_argv[], // Otherwise, return failure. return 1; } - -/// AllocateRWXMemory - Allocate a slab of memory with read/write/execute -/// permissions. This is typically used for JIT applications where we want -/// to emit code to the memory then jump to it. Getting this type of memory -/// is very OS specific. -/// -void *llvm::AllocateRWXMemory(unsigned NumBytes) { - if (NumBytes == 0) return 0; - -#if defined(HAVE_WINDOWS_H) - // On windows we use VirtualAlloc. - void *P = VirtualAlloc(0, NumBytes, MEM_COMMIT, PAGE_EXECUTE_READWRITE); - if (P == 0) { - std::cerr << "Error allocating executable memory!\n"; - abort(); - } - return P; - -#elif defined(HAVE_MMAP) - static const long pageSize = GetPageSize(); - 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 has an unknown MMAP implementation!\n"; - abort(); - return 0; -#endif - - 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 -} - - |