mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-24 21:14:56 +00:00
0ab5c6c16b
At this time only Unix-based systems are supported. Windows has stubs and should re-route to the simulated mode. Thanks to Sriram Murali for contributions to this patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191843 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
//===- RemoteTarget.cpp - LLVM Remote process JIT execution --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implementation of the RemoteTarget class which executes JITed code in a
|
|
// separate address range from where it was built.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "RemoteTarget.h"
|
|
#include "RemoteTargetExternal.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/DataTypes.h"
|
|
#include "llvm/Support/Memory.h"
|
|
#include <stdlib.h>
|
|
#include <string>
|
|
|
|
using namespace llvm;
|
|
|
|
// Static methods
|
|
RemoteTarget *RemoteTarget::createRemoteTarget() {
|
|
return new RemoteTarget;
|
|
}
|
|
|
|
RemoteTarget *RemoteTarget::createExternalRemoteTarget(std::string &ChildName) {
|
|
#ifdef LLVM_ON_UNIX
|
|
return new RemoteTargetExternal(ChildName);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
bool RemoteTarget::hostSupportsExternalRemoteTarget() {
|
|
#ifdef LLVM_ON_UNIX
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Simulated remote execution
|
|
//
|
|
// This implementation will simply move generated code and data to a new memory
|
|
// location in the current executable and let it run from there.
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
bool RemoteTarget::allocateSpace(size_t Size, unsigned Alignment,
|
|
uint64_t &Address) {
|
|
sys::MemoryBlock *Prev = Allocations.size() ? &Allocations.back() : NULL;
|
|
sys::MemoryBlock Mem = sys::Memory::AllocateRWX(Size, Prev, &ErrorMsg);
|
|
if (Mem.base() == NULL)
|
|
return true;
|
|
if ((uintptr_t)Mem.base() % Alignment) {
|
|
ErrorMsg = "unable to allocate sufficiently aligned memory";
|
|
return true;
|
|
}
|
|
Address = reinterpret_cast<uint64_t>(Mem.base());
|
|
return false;
|
|
}
|
|
|
|
bool RemoteTarget::loadData(uint64_t Address, const void *Data, size_t Size) {
|
|
memcpy ((void*)Address, Data, Size);
|
|
return false;
|
|
}
|
|
|
|
bool RemoteTarget::loadCode(uint64_t Address, const void *Data, size_t Size) {
|
|
memcpy ((void*)Address, Data, Size);
|
|
sys::MemoryBlock Mem((void*)Address, Size);
|
|
sys::Memory::setExecutable(Mem, &ErrorMsg);
|
|
return false;
|
|
}
|
|
|
|
bool RemoteTarget::executeCode(uint64_t Address, int &RetVal) {
|
|
int (*fn)(void) = (int(*)(void))Address;
|
|
RetVal = fn();
|
|
return false;
|
|
}
|
|
|
|
void RemoteTarget::create() {
|
|
}
|
|
|
|
void RemoteTarget::stop() {
|
|
for (unsigned i = 0, e = Allocations.size(); i != e; ++i)
|
|
sys::Memory::ReleaseRWX(Allocations[i]);
|
|
}
|