1 //===- bitreader.go - Bindings for bitreader ------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines bindings for the bitreader component. 11 // 12 //===----------------------------------------------------------------------===// 13 14 package llvm 15 16 /* 17 #include "llvm-c/BitReader.h" 18 #include "llvm-c/Core.h" 19 #include <stdlib.h> 20 */ 21 import "C" 22 23 import ( 24 "errors" 25 "unsafe" 26 ) 27 28 // ParseBitcodeFile parses the LLVM IR (bitcode) in the file with the 29 // specified name, and returns a new LLVM module. 30 func ParseBitcodeFile(name string) (Module, error) { 31 var buf C.LLVMMemoryBufferRef 32 var errmsg *C.char 33 var cfilename *C.char = C.CString(name) 34 defer C.free(unsafe.Pointer(cfilename)) 35 result := C.LLVMCreateMemoryBufferWithContentsOfFile(cfilename, &buf, &errmsg) 36 if result != 0 { 37 err := errors.New(C.GoString(errmsg)) 38 C.free(unsafe.Pointer(errmsg)) 39 return Module{}, err 40 } 41 defer C.LLVMDisposeMemoryBuffer(buf) 42 43 var m Module 44 if C.LLVMParseBitcode2(buf, &m.C) == 0 { 45 return m, nil 46 } 47 48 err := errors.New(C.GoString(errmsg)) 49 C.free(unsafe.Pointer(errmsg)) 50 return Module{}, err 51 } 52
