1 //===-- BitReader.cpp -----------------------------------------------------===//
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 #include "llvm-c/BitReader.h"
11 #include "llvm/Bitcode/ReaderWriter.h"
12 #include "llvm/IR/LLVMContext.h"
13 #include "llvm/IR/Module.h"
14 #include "llvm/Support/MemoryBuffer.h"
15 #include <cstring>
16 #include <string>
17
18 using namespace llvm;
19
20 /* Builds a module from the bitcode in the specified memory buffer, returning a
21 reference to the module via the OutModule parameter. Returns 0 on success.
22 Optionally returns a human-readable error message via OutMessage. */
LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutModule,char ** OutMessage)23 LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,
24 LLVMModuleRef *OutModule, char **OutMessage) {
25 return LLVMParseBitcodeInContext(wrap(&getGlobalContext()), MemBuf, OutModule,
26 OutMessage);
27 }
28
LLVMParseBitcodeInContext(LLVMContextRef ContextRef,LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutModule,char ** OutMessage)29 LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
30 LLVMMemoryBufferRef MemBuf,
31 LLVMModuleRef *OutModule,
32 char **OutMessage) {
33 std::string Message;
34
35 *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef),
36 &Message));
37 if (!*OutModule) {
38 if (OutMessage)
39 *OutMessage = strdup(Message.c_str());
40 return 1;
41 }
42
43 return 0;
44 }
45
46 /* Reads a module from the specified path, returning via the OutModule parameter
47 a module provider which performs lazy deserialization. Returns 0 on success.
48 Optionally returns a human-readable error message via OutMessage. */
LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutM,char ** OutMessage)49 LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
50 LLVMMemoryBufferRef MemBuf,
51 LLVMModuleRef *OutM,
52 char **OutMessage) {
53 std::string Message;
54
55 *OutM = wrap(getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef),
56 &Message));
57 if (!*OutM) {
58 if (OutMessage)
59 *OutMessage = strdup(Message.c_str());
60 return 1;
61 }
62
63 return 0;
64
65 }
66
LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutM,char ** OutMessage)67 LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
68 char **OutMessage) {
69 return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM,
70 OutMessage);
71 }
72
73 /* Deprecated: Use LLVMGetBitcodeModuleInContext instead. */
LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,LLVMMemoryBufferRef MemBuf,LLVMModuleProviderRef * OutMP,char ** OutMessage)74 LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,
75 LLVMMemoryBufferRef MemBuf,
76 LLVMModuleProviderRef *OutMP,
77 char **OutMessage) {
78 return LLVMGetBitcodeModuleInContext(ContextRef, MemBuf,
79 reinterpret_cast<LLVMModuleRef*>(OutMP),
80 OutMessage);
81 }
82
83 /* Deprecated: Use LLVMGetBitcodeModule instead. */
LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,LLVMModuleProviderRef * OutMP,char ** OutMessage)84 LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
85 LLVMModuleProviderRef *OutMP,
86 char **OutMessage) {
87 return LLVMGetBitcodeModuleProviderInContext(LLVMGetGlobalContext(), MemBuf,
88 OutMP, OutMessage);
89 }
90