mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
7cba2a973f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212405 91177308-0d34-0410-b5e6-96231b3b80d8
400 lines
14 KiB
C++
400 lines
14 KiB
C++
//===-- llvm-rtdyld.cpp - MCJIT Testing Tool ------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This is a testing tool for use with the MC-JIT LLVM components.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/ADT/StringMap.h"
|
|
#include "llvm/DebugInfo/DIContext.h"
|
|
#include "llvm/ExecutionEngine/ObjectBuffer.h"
|
|
#include "llvm/ExecutionEngine/ObjectImage.h"
|
|
#include "llvm/ExecutionEngine/RuntimeDyld.h"
|
|
#include "llvm/ExecutionEngine/RuntimeDyldChecker.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCDisassembler.h"
|
|
#include "llvm/MC/MCInstrInfo.h"
|
|
#include "llvm/MC/MCInstPrinter.h"
|
|
#include "llvm/MC/MCRegisterInfo.h"
|
|
#include "llvm/Object/MachO.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/DynamicLibrary.h"
|
|
#include "llvm/Support/ManagedStatic.h"
|
|
#include "llvm/Support/Memory.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/PrettyStackTrace.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/Support/Signals.h"
|
|
#include "llvm/Support/TargetRegistry.h"
|
|
#include "llvm/Support/TargetSelect.h"
|
|
#include <system_error>
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::object;
|
|
|
|
static cl::list<std::string>
|
|
InputFileList(cl::Positional, cl::ZeroOrMore,
|
|
cl::desc("<input file>"));
|
|
|
|
enum ActionType {
|
|
AC_Execute,
|
|
AC_PrintLineInfo,
|
|
AC_Verify
|
|
};
|
|
|
|
static cl::opt<ActionType>
|
|
Action(cl::desc("Action to perform:"),
|
|
cl::init(AC_Execute),
|
|
cl::values(clEnumValN(AC_Execute, "execute",
|
|
"Load, link, and execute the inputs."),
|
|
clEnumValN(AC_PrintLineInfo, "printline",
|
|
"Load, link, and print line information for each function."),
|
|
clEnumValN(AC_Verify, "verify",
|
|
"Load, link and verify the resulting memory image."),
|
|
clEnumValEnd));
|
|
|
|
static cl::opt<std::string>
|
|
EntryPoint("entry",
|
|
cl::desc("Function to call as entry point."),
|
|
cl::init("_main"));
|
|
|
|
static cl::list<std::string>
|
|
Dylibs("dylib",
|
|
cl::desc("Add library."),
|
|
cl::ZeroOrMore);
|
|
|
|
static cl::opt<std::string>
|
|
TripleName("triple", cl::desc("Target triple for disassembler"));
|
|
|
|
static cl::list<std::string>
|
|
CheckFiles("check",
|
|
cl::desc("File containing RuntimeDyld verifier checks."),
|
|
cl::ZeroOrMore);
|
|
|
|
/* *** */
|
|
|
|
// A trivial memory manager that doesn't do anything fancy, just uses the
|
|
// support library allocation routines directly.
|
|
class TrivialMemoryManager : public RTDyldMemoryManager {
|
|
public:
|
|
SmallVector<sys::MemoryBlock, 16> FunctionMemory;
|
|
SmallVector<sys::MemoryBlock, 16> DataMemory;
|
|
|
|
uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
|
|
unsigned SectionID,
|
|
StringRef SectionName) override;
|
|
uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
|
|
unsigned SectionID, StringRef SectionName,
|
|
bool IsReadOnly) override;
|
|
|
|
void *getPointerToNamedFunction(const std::string &Name,
|
|
bool AbortOnFailure = true) override {
|
|
return nullptr;
|
|
}
|
|
|
|
bool finalizeMemory(std::string *ErrMsg) override { return false; }
|
|
|
|
// Invalidate instruction cache for sections with execute permissions.
|
|
// Some platforms with separate data cache and instruction cache require
|
|
// explicit cache flush, otherwise JIT code manipulations (like resolved
|
|
// relocations) will get to the data cache but not to the instruction cache.
|
|
virtual void invalidateInstructionCache();
|
|
};
|
|
|
|
uint8_t *TrivialMemoryManager::allocateCodeSection(uintptr_t Size,
|
|
unsigned Alignment,
|
|
unsigned SectionID,
|
|
StringRef SectionName) {
|
|
sys::MemoryBlock MB = sys::Memory::AllocateRWX(Size, nullptr, nullptr);
|
|
FunctionMemory.push_back(MB);
|
|
return (uint8_t*)MB.base();
|
|
}
|
|
|
|
uint8_t *TrivialMemoryManager::allocateDataSection(uintptr_t Size,
|
|
unsigned Alignment,
|
|
unsigned SectionID,
|
|
StringRef SectionName,
|
|
bool IsReadOnly) {
|
|
sys::MemoryBlock MB = sys::Memory::AllocateRWX(Size, nullptr, nullptr);
|
|
DataMemory.push_back(MB);
|
|
return (uint8_t*)MB.base();
|
|
}
|
|
|
|
void TrivialMemoryManager::invalidateInstructionCache() {
|
|
for (int i = 0, e = FunctionMemory.size(); i != e; ++i)
|
|
sys::Memory::InvalidateInstructionCache(FunctionMemory[i].base(),
|
|
FunctionMemory[i].size());
|
|
|
|
for (int i = 0, e = DataMemory.size(); i != e; ++i)
|
|
sys::Memory::InvalidateInstructionCache(DataMemory[i].base(),
|
|
DataMemory[i].size());
|
|
}
|
|
|
|
static const char *ProgramName;
|
|
|
|
static void Message(const char *Type, const Twine &Msg) {
|
|
errs() << ProgramName << ": " << Type << ": " << Msg << "\n";
|
|
}
|
|
|
|
static int Error(const Twine &Msg) {
|
|
Message("error", Msg);
|
|
return 1;
|
|
}
|
|
|
|
static void loadDylibs() {
|
|
for (const std::string &Dylib : Dylibs) {
|
|
if (sys::fs::is_regular_file(Dylib)) {
|
|
std::string ErrMsg;
|
|
if (sys::DynamicLibrary::LoadLibraryPermanently(Dylib.c_str(), &ErrMsg))
|
|
llvm::errs() << "Error loading '" << Dylib << "': "
|
|
<< ErrMsg << "\n";
|
|
} else
|
|
llvm::errs() << "Dylib not found: '" << Dylib << "'.\n";
|
|
}
|
|
}
|
|
|
|
/* *** */
|
|
|
|
static int printLineInfoForInput() {
|
|
// Load any dylibs requested on the command line.
|
|
loadDylibs();
|
|
|
|
// If we don't have any input files, read from stdin.
|
|
if (!InputFileList.size())
|
|
InputFileList.push_back("-");
|
|
for(unsigned i = 0, e = InputFileList.size(); i != e; ++i) {
|
|
// Instantiate a dynamic linker.
|
|
TrivialMemoryManager MemMgr;
|
|
RuntimeDyld Dyld(&MemMgr);
|
|
|
|
// Load the input memory buffer.
|
|
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> InputBuffer =
|
|
MemoryBuffer::getFileOrSTDIN(InputFileList[i]);
|
|
if (std::error_code EC = InputBuffer.getError())
|
|
return Error("unable to read input: '" + EC.message() + "'");
|
|
|
|
std::unique_ptr<ObjectImage> LoadedObject;
|
|
// Load the object file
|
|
LoadedObject.reset(
|
|
Dyld.loadObject(new ObjectBuffer(InputBuffer.get().release())));
|
|
if (!LoadedObject) {
|
|
return Error(Dyld.getErrorString());
|
|
}
|
|
|
|
// Resolve all the relocations we can.
|
|
Dyld.resolveRelocations();
|
|
|
|
std::unique_ptr<DIContext> Context(
|
|
DIContext::getDWARFContext(LoadedObject->getObjectFile()));
|
|
|
|
// Use symbol info to iterate functions in the object.
|
|
for (object::symbol_iterator I = LoadedObject->begin_symbols(),
|
|
E = LoadedObject->end_symbols();
|
|
I != E; ++I) {
|
|
object::SymbolRef::Type SymType;
|
|
if (I->getType(SymType)) continue;
|
|
if (SymType == object::SymbolRef::ST_Function) {
|
|
StringRef Name;
|
|
uint64_t Addr;
|
|
uint64_t Size;
|
|
if (I->getName(Name)) continue;
|
|
if (I->getAddress(Addr)) continue;
|
|
if (I->getSize(Size)) continue;
|
|
|
|
outs() << "Function: " << Name << ", Size = " << Size << "\n";
|
|
|
|
DILineInfoTable Lines = Context->getLineInfoForAddressRange(Addr, Size);
|
|
DILineInfoTable::iterator Begin = Lines.begin();
|
|
DILineInfoTable::iterator End = Lines.end();
|
|
for (DILineInfoTable::iterator It = Begin; It != End; ++It) {
|
|
outs() << " Line info @ " << It->first - Addr << ": "
|
|
<< It->second.FileName << ", line:" << It->second.Line << "\n";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int executeInput() {
|
|
// Load any dylibs requested on the command line.
|
|
loadDylibs();
|
|
|
|
// Instantiate a dynamic linker.
|
|
TrivialMemoryManager MemMgr;
|
|
RuntimeDyld Dyld(&MemMgr);
|
|
|
|
// If we don't have any input files, read from stdin.
|
|
if (!InputFileList.size())
|
|
InputFileList.push_back("-");
|
|
for(unsigned i = 0, e = InputFileList.size(); i != e; ++i) {
|
|
// Load the input memory buffer.
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> InputBuffer =
|
|
MemoryBuffer::getFileOrSTDIN(InputFileList[i]);
|
|
if (std::error_code EC = InputBuffer.getError())
|
|
return Error("unable to read input: '" + EC.message() + "'");
|
|
std::unique_ptr<ObjectImage> LoadedObject;
|
|
// Load the object file
|
|
LoadedObject.reset(
|
|
Dyld.loadObject(new ObjectBuffer(InputBuffer.get().release())));
|
|
if (!LoadedObject) {
|
|
return Error(Dyld.getErrorString());
|
|
}
|
|
}
|
|
|
|
// Resolve all the relocations we can.
|
|
Dyld.resolveRelocations();
|
|
// Clear instruction cache before code will be executed.
|
|
MemMgr.invalidateInstructionCache();
|
|
|
|
// FIXME: Error out if there are unresolved relocations.
|
|
|
|
// Get the address of the entry point (_main by default).
|
|
void *MainAddress = Dyld.getSymbolAddress(EntryPoint);
|
|
if (!MainAddress)
|
|
return Error("no definition for '" + EntryPoint + "'");
|
|
|
|
// Invalidate the instruction cache for each loaded function.
|
|
for (unsigned i = 0, e = MemMgr.FunctionMemory.size(); i != e; ++i) {
|
|
sys::MemoryBlock &Data = MemMgr.FunctionMemory[i];
|
|
// Make sure the memory is executable.
|
|
std::string ErrorStr;
|
|
sys::Memory::InvalidateInstructionCache(Data.base(), Data.size());
|
|
if (!sys::Memory::setExecutable(Data, &ErrorStr))
|
|
return Error("unable to mark function executable: '" + ErrorStr + "'");
|
|
}
|
|
|
|
// Dispatch to _main().
|
|
errs() << "loaded '" << EntryPoint << "' at: " << (void*)MainAddress << "\n";
|
|
|
|
int (*Main)(int, const char**) =
|
|
(int(*)(int,const char**)) uintptr_t(MainAddress);
|
|
const char **Argv = new const char*[2];
|
|
// Use the name of the first input object module as argv[0] for the target.
|
|
Argv[0] = InputFileList[0].c_str();
|
|
Argv[1] = nullptr;
|
|
return Main(1, Argv);
|
|
}
|
|
|
|
static int checkAllExpressions(RuntimeDyldChecker &Checker) {
|
|
for (const auto& CheckerFileName : CheckFiles) {
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> CheckerFileBuf =
|
|
MemoryBuffer::getFileOrSTDIN(CheckerFileName);
|
|
if (std::error_code EC = CheckerFileBuf.getError())
|
|
return Error("unable to read input '" + CheckerFileName + "': " +
|
|
EC.message());
|
|
|
|
if (!Checker.checkAllRulesInBuffer("# rtdyld-check:",
|
|
CheckerFileBuf.get().get()))
|
|
return Error("some checks in '" + CheckerFileName + "' failed");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int linkAndVerify() {
|
|
|
|
// Check for missing triple.
|
|
if (TripleName == "") {
|
|
llvm::errs() << "Error: -triple required when running in -verify mode.\n";
|
|
return 1;
|
|
}
|
|
|
|
// Look up the target and build the disassembler.
|
|
Triple TheTriple(Triple::normalize(TripleName));
|
|
std::string ErrorStr;
|
|
const Target *TheTarget =
|
|
TargetRegistry::lookupTarget("", TheTriple, ErrorStr);
|
|
if (!TheTarget) {
|
|
llvm::errs() << "Error accessing target '" << TripleName << "': "
|
|
<< ErrorStr << "\n";
|
|
return 1;
|
|
}
|
|
TripleName = TheTriple.getTriple();
|
|
|
|
std::unique_ptr<MCSubtargetInfo> STI(
|
|
TheTarget->createMCSubtargetInfo(TripleName, "", ""));
|
|
assert(STI && "Unable to create subtarget info!");
|
|
|
|
std::unique_ptr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
|
|
assert(MRI && "Unable to create target register info!");
|
|
|
|
std::unique_ptr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(*MRI, TripleName));
|
|
assert(MAI && "Unable to create target asm info!");
|
|
|
|
MCContext Ctx(MAI.get(), MRI.get(), nullptr);
|
|
|
|
std::unique_ptr<MCDisassembler> Disassembler(
|
|
TheTarget->createMCDisassembler(*STI, Ctx));
|
|
assert(Disassembler && "Unable to create disassembler!");
|
|
|
|
std::unique_ptr<MCInstrInfo> MII(TheTarget->createMCInstrInfo());
|
|
|
|
std::unique_ptr<MCInstPrinter> InstPrinter(
|
|
TheTarget->createMCInstPrinter(0, *MAI, *MII, *MRI, *STI));
|
|
|
|
// Load any dylibs requested on the command line.
|
|
loadDylibs();
|
|
|
|
// Instantiate a dynamic linker.
|
|
TrivialMemoryManager MemMgr;
|
|
RuntimeDyld Dyld(&MemMgr);
|
|
|
|
// If we don't have any input files, read from stdin.
|
|
if (!InputFileList.size())
|
|
InputFileList.push_back("-");
|
|
for(unsigned i = 0, e = InputFileList.size(); i != e; ++i) {
|
|
// Load the input memory buffer.
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> InputBuffer =
|
|
MemoryBuffer::getFileOrSTDIN(InputFileList[i]);
|
|
if (std::error_code EC = InputBuffer.getError())
|
|
return Error("unable to read input: '" + EC.message() + "'");
|
|
|
|
std::unique_ptr<ObjectImage> LoadedObject;
|
|
// Load the object file
|
|
LoadedObject.reset(
|
|
Dyld.loadObject(new ObjectBuffer(InputBuffer.get().release())));
|
|
if (!LoadedObject) {
|
|
return Error(Dyld.getErrorString());
|
|
}
|
|
}
|
|
|
|
// Resolve all the relocations we can.
|
|
Dyld.resolveRelocations();
|
|
|
|
RuntimeDyldChecker Checker(Dyld, Disassembler.get(), InstPrinter.get(),
|
|
llvm::dbgs());
|
|
return checkAllExpressions(Checker);
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
sys::PrintStackTraceOnErrorSignal();
|
|
PrettyStackTraceProgram X(argc, argv);
|
|
|
|
ProgramName = argv[0];
|
|
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
|
|
|
|
llvm::InitializeAllTargetInfos();
|
|
llvm::InitializeAllTargetMCs();
|
|
llvm::InitializeAllDisassemblers();
|
|
|
|
cl::ParseCommandLineOptions(argc, argv, "llvm MC-JIT tool\n");
|
|
|
|
switch (Action) {
|
|
case AC_Execute:
|
|
return executeInput();
|
|
case AC_PrintLineInfo:
|
|
return printLineInfoForInput();
|
|
case AC_Verify:
|
|
return linkAndVerify();
|
|
}
|
|
}
|