1 //===- OrcRemoteTargetRPCAPI.h - Orc Remote-target RPC API ------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the Orc remote-target RPC API. It should not be used
11 // directly, but is used by the RemoteTargetClient and RemoteTargetServer
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_EXECUTIONENGINE_ORC_ORCREMOTETARGETRPCAPI_H
17 #define LLVM_EXECUTIONENGINE_ORC_ORCREMOTETARGETRPCAPI_H
19 #include "llvm/ExecutionEngine/JITSymbol.h"
20 #include "llvm/ExecutionEngine/Orc/RPCUtils.h"
21 #include "llvm/ExecutionEngine/Orc/RawByteChannel.h"
28 /// Template error for missing resources.
29 template <typename ResourceIdT>
30 class ResourceNotFound
31 : public ErrorInfo<ResourceNotFound<ResourceIdT>> {
35 ResourceNotFound(ResourceIdT ResourceId,
36 std::string ResourceDescription = "")
37 : ResourceId(std::move(ResourceId)),
38 ResourceDescription(std::move(ResourceDescription)) {}
40 std::error_code convertToErrorCode() const override {
41 return orcError(OrcErrorCode::UnknownResourceHandle);
44 void log(raw_ostream &OS) const override {
45 OS << (ResourceDescription.empty()
46 ? "Remote resource with id "
47 : ResourceDescription)
48 << " " << ResourceId << " not found";
52 ResourceIdT ResourceId;
53 std::string ResourceDescription;
56 template <typename ResourceIdT>
57 char ResourceNotFound<ResourceIdT>::ID = 0;
59 class DirectBufferWriter {
61 DirectBufferWriter() = default;
62 DirectBufferWriter(const char *Src, JITTargetAddress Dst, uint64_t Size)
63 : Src(Src), Dst(Dst), Size(Size) {}
65 const char *getSrc() const { return Src; }
66 JITTargetAddress getDst() const { return Dst; }
67 uint64_t getSize() const { return Size; }
75 } // end namespace remote
80 class RPCTypeName<JITSymbolFlags> {
82 static const char *getName() { return "JITSymbolFlags"; }
85 template <typename ChannelT>
86 class SerializationTraits<ChannelT, JITSymbolFlags> {
89 static Error serialize(ChannelT &C, const JITSymbolFlags &Flags) {
90 return serializeSeq(C, Flags.getRawFlagsValue(), Flags.getTargetFlags());
93 static Error deserialize(ChannelT &C, JITSymbolFlags &Flags) {
94 JITSymbolFlags::UnderlyingType JITFlags;
95 JITSymbolFlags::TargetFlagsType TargetFlags;
96 if (auto Err = deserializeSeq(C, JITFlags, TargetFlags))
98 Flags = JITSymbolFlags(static_cast<JITSymbolFlags::FlagNames>(JITFlags),
100 return Error::success();
104 template <> class RPCTypeName<remote::DirectBufferWriter> {
106 static const char *getName() { return "DirectBufferWriter"; }
109 template <typename ChannelT>
110 class SerializationTraits<
111 ChannelT, remote::DirectBufferWriter, remote::DirectBufferWriter,
112 typename std::enable_if<
113 std::is_base_of<RawByteChannel, ChannelT>::value>::type> {
115 static Error serialize(ChannelT &C, const remote::DirectBufferWriter &DBW) {
116 if (auto EC = serializeSeq(C, DBW.getDst()))
118 if (auto EC = serializeSeq(C, DBW.getSize()))
120 return C.appendBytes(DBW.getSrc(), DBW.getSize());
123 static Error deserialize(ChannelT &C, remote::DirectBufferWriter &DBW) {
124 JITTargetAddress Dst;
125 if (auto EC = deserializeSeq(C, Dst))
128 if (auto EC = deserializeSeq(C, Size))
130 char *Addr = reinterpret_cast<char *>(static_cast<uintptr_t>(Dst));
132 DBW = remote::DirectBufferWriter(nullptr, Dst, Size);
134 return C.readBytes(Addr, Size);
138 } // end namespace rpc
142 class ResourceIdMgr {
144 using ResourceId = uint64_t;
145 static const ResourceId InvalidId = ~0U;
147 ResourceIdMgr() = default;
148 explicit ResourceIdMgr(ResourceId FirstValidId)
149 : NextId(std::move(FirstValidId)) {}
151 ResourceId getNext() {
152 if (!FreeIds.empty()) {
153 ResourceId I = FreeIds.back();
157 assert(NextId + 1 != ~0ULL && "All ids allocated");
161 void release(ResourceId I) { FreeIds.push_back(I); }
164 ResourceId NextId = 1;
165 std::vector<ResourceId> FreeIds;
168 /// Registers EH frames on the remote.
171 /// Registers EH frames on the remote.
172 class RegisterEHFrames
173 : public rpc::Function<RegisterEHFrames,
174 void(JITTargetAddress Addr, uint32_t Size)> {
176 static const char *getName() { return "RegisterEHFrames"; }
179 /// Deregisters EH frames on the remote.
180 class DeregisterEHFrames
181 : public rpc::Function<DeregisterEHFrames,
182 void(JITTargetAddress Addr, uint32_t Size)> {
184 static const char *getName() { return "DeregisterEHFrames"; }
187 } // end namespace eh
189 /// RPC functions for executing remote code.
192 /// Call an 'int32_t()'-type function on the remote, returns the called
193 /// function's return value.
195 : public rpc::Function<CallIntVoid, int32_t(JITTargetAddress Addr)> {
197 static const char *getName() { return "CallIntVoid"; }
200 /// Call an 'int32_t(int32_t, char**)'-type function on the remote, returns the
201 /// called function's return value.
203 : public rpc::Function<CallMain, int32_t(JITTargetAddress Addr,
204 std::vector<std::string> Args)> {
206 static const char *getName() { return "CallMain"; }
209 /// Calls a 'void()'-type function on the remote, returns when the called
210 /// function completes.
212 : public rpc::Function<CallVoidVoid, void(JITTargetAddress FnAddr)> {
214 static const char *getName() { return "CallVoidVoid"; }
217 } // end namespace exec
219 /// RPC functions for remote memory management / inspection / modification.
222 /// Creates a memory allocator on the remote.
223 class CreateRemoteAllocator
224 : public rpc::Function<CreateRemoteAllocator,
225 void(ResourceIdMgr::ResourceId AllocatorID)> {
227 static const char *getName() { return "CreateRemoteAllocator"; }
230 /// Destroys a remote allocator, freeing any memory allocated by it.
231 class DestroyRemoteAllocator
232 : public rpc::Function<DestroyRemoteAllocator,
233 void(ResourceIdMgr::ResourceId AllocatorID)> {
235 static const char *getName() { return "DestroyRemoteAllocator"; }
238 /// Read a remote memory block.
240 : public rpc::Function<ReadMem, std::vector<uint8_t>(JITTargetAddress Src,
243 static const char *getName() { return "ReadMem"; }
246 /// Reserve a block of memory on the remote via the given allocator.
248 : public rpc::Function<ReserveMem,
249 JITTargetAddress(ResourceIdMgr::ResourceId AllocID,
250 uint64_t Size, uint32_t Align)> {
252 static const char *getName() { return "ReserveMem"; }
255 /// Set the memory protection on a memory block.
257 : public rpc::Function<SetProtections,
258 void(ResourceIdMgr::ResourceId AllocID,
259 JITTargetAddress Dst, uint32_t ProtFlags)> {
261 static const char *getName() { return "SetProtections"; }
264 /// Write to a remote memory block.
266 : public rpc::Function<WriteMem, void(remote::DirectBufferWriter DB)> {
268 static const char *getName() { return "WriteMem"; }
271 /// Write to a remote pointer.
272 class WritePtr : public rpc::Function<WritePtr, void(JITTargetAddress Dst,
273 JITTargetAddress Val)> {
275 static const char *getName() { return "WritePtr"; }
278 } // end namespace mem
280 /// RPC functions for remote stub and trampoline management.
283 /// Creates an indirect stub owner on the remote.
284 class CreateIndirectStubsOwner
285 : public rpc::Function<CreateIndirectStubsOwner,
286 void(ResourceIdMgr::ResourceId StubOwnerID)> {
288 static const char *getName() { return "CreateIndirectStubsOwner"; }
291 /// RPC function for destroying an indirect stubs owner.
292 class DestroyIndirectStubsOwner
293 : public rpc::Function<DestroyIndirectStubsOwner,
294 void(ResourceIdMgr::ResourceId StubsOwnerID)> {
296 static const char *getName() { return "DestroyIndirectStubsOwner"; }
299 /// EmitIndirectStubs result is (StubsBase, PtrsBase, NumStubsEmitted).
300 class EmitIndirectStubs
301 : public rpc::Function<
303 std::tuple<JITTargetAddress, JITTargetAddress, uint32_t>(
304 ResourceIdMgr::ResourceId StubsOwnerID,
305 uint32_t NumStubsRequired)> {
307 static const char *getName() { return "EmitIndirectStubs"; }
310 /// RPC function to emit the resolver block and return its address.
311 class EmitResolverBlock : public rpc::Function<EmitResolverBlock, void()> {
313 static const char *getName() { return "EmitResolverBlock"; }
316 /// EmitTrampolineBlock result is (BlockAddr, NumTrampolines).
317 class EmitTrampolineBlock
318 : public rpc::Function<EmitTrampolineBlock,
319 std::tuple<JITTargetAddress, uint32_t>()> {
321 static const char *getName() { return "EmitTrampolineBlock"; }
324 } // end namespace stubs
326 /// Miscelaneous RPC functions for dealing with remotes.
329 /// GetRemoteInfo result is (Triple, PointerSize, PageSize, TrampolineSize,
330 /// IndirectStubsSize).
332 : public rpc::Function<
334 std::tuple<std::string, uint32_t, uint32_t, uint32_t, uint32_t>()> {
336 static const char *getName() { return "GetRemoteInfo"; }
339 /// Get the address of a remote symbol.
340 class GetSymbolAddress
341 : public rpc::Function<GetSymbolAddress,
342 JITTargetAddress(std::string SymbolName)> {
344 static const char *getName() { return "GetSymbolAddress"; }
347 /// Request that the host execute a compile callback.
349 : public rpc::Function<
350 RequestCompile, JITTargetAddress(JITTargetAddress TrampolineAddr)> {
352 static const char *getName() { return "RequestCompile"; }
355 /// Notify the remote and terminate the session.
356 class TerminateSession : public rpc::Function<TerminateSession, void()> {
358 static const char *getName() { return "TerminateSession"; }
363 class OrcRemoteTargetRPCAPI
364 : public rpc::SingleThreadedRPCEndpoint<rpc::RawByteChannel> {
366 // FIXME: Remove constructors once MSVC supports synthesizing move-ops.
367 OrcRemoteTargetRPCAPI(rpc::RawByteChannel &C)
368 : rpc::SingleThreadedRPCEndpoint<rpc::RawByteChannel>(C, true) {}
371 } // end namespace remote
373 } // end namespace orc
374 } // end namespace llvm
376 #endif // LLVM_EXECUTIONENGINE_ORC_ORCREMOTETARGETRPCAPI_H