TargetProcessControl.cpp
4.59 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
//===------ TargetProcessControl.cpp -- Target process control APIs -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ExecutionEngine/Orc/TargetProcessControl.h"
#include "llvm/ExecutionEngine/Orc/Core.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/Process.h"
#include <mutex>
namespace llvm {
namespace orc {
TargetProcessControl::MemoryAccess::~MemoryAccess() {}
TargetProcessControl::~TargetProcessControl() {}
SelfTargetProcessControl::SelfTargetProcessControl(
Triple TT, unsigned PageSize,
std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr) {
OwnedMemMgr = std::move(MemMgr);
if (!OwnedMemMgr)
OwnedMemMgr = std::make_unique<jitlink::InProcessMemoryManager>();
this->TT = std::move(TT);
this->PageSize = PageSize;
this->MemMgr = OwnedMemMgr.get();
this->MemAccess = this;
if (this->TT.isOSBinFormatMachO())
GlobalManglingPrefix = '_';
}
Expected<std::unique_ptr<SelfTargetProcessControl>>
SelfTargetProcessControl::Create(
std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr) {
auto PageSize = sys::Process::getPageSize();
if (!PageSize)
return PageSize.takeError();
Triple TT(sys::getProcessTriple());
return std::make_unique<SelfTargetProcessControl>(std::move(TT), *PageSize,
std::move(MemMgr));
}
Expected<TargetProcessControl::DylibHandle>
SelfTargetProcessControl::loadDylib(const char *DylibPath) {
std::string ErrMsg;
auto Dylib = std::make_unique<sys::DynamicLibrary>(
sys::DynamicLibrary::getPermanentLibrary(DylibPath, &ErrMsg));
if (!Dylib->isValid())
return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode());
DynamicLibraries.push_back(std::move(Dylib));
return pointerToJITTargetAddress(DynamicLibraries.back().get());
}
Expected<TargetProcessControl::LookupResult>
SelfTargetProcessControl::lookupSymbols(LookupRequest Request) {
LookupResult R;
for (auto &Elem : Request) {
auto *Dylib = jitTargetAddressToPointer<sys::DynamicLibrary *>(Elem.Handle);
assert(llvm::find_if(DynamicLibraries,
[=](const std::unique_ptr<sys::DynamicLibrary> &DL) {
return DL.get() == Dylib;
}) != DynamicLibraries.end() &&
"Invalid handle");
R.push_back(std::vector<JITTargetAddress>());
for (auto &KV : Elem.Symbols) {
auto &Sym = KV.first;
std::string Tmp((*Sym).data() + !!GlobalManglingPrefix,
(*Sym).size() - !!GlobalManglingPrefix);
void *Addr = Dylib->getAddressOfSymbol(Tmp.c_str());
if (!Addr && KV.second == SymbolLookupFlags::RequiredSymbol) {
// FIXME: Collect all failing symbols before erroring out.
SymbolNameVector MissingSymbols;
MissingSymbols.push_back(Sym);
return make_error<SymbolsNotFound>(std::move(MissingSymbols));
}
R.back().push_back(pointerToJITTargetAddress(Addr));
}
}
return R;
}
void SelfTargetProcessControl::writeUInt8s(ArrayRef<UInt8Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint8_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeUInt16s(ArrayRef<UInt16Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint16_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeUInt32s(ArrayRef<UInt32Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint32_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeUInt64s(ArrayRef<UInt64Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint64_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeBuffers(ArrayRef<BufferWrite> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
memcpy(jitTargetAddressToPointer<char *>(W.Address), W.Buffer.data(),
W.Buffer.size());
OnWriteComplete(Error::success());
}
} // end namespace orc
} // end namespace llvm