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/*
* (C) 2010 by Computer System Laboratory, IIS, Academia Sinica, Taiwan.
* See COPYRIGHT in top-level directory.
*/
#ifndef __LLVM_DEBUG_H
#define __LLVM_DEBUG_H
#include <cstdint>
#include <cstring>
#include <iostream>
#include <sstream>
#include <cstdarg>
#include <unistd.h>
#include <sys/time.h>
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/MC/MCInstPrinter.h"
#include "llvm/MC/MCInstrAnalysis.h"
#include "llvm/Support/FileSystem.h"
#include "utils.h"
struct DebugMode {
uint64_t Mode;
DebugMode(uint64_t M) : Mode(M) {}
bool operator==(const DebugMode &RHS) const {
return Mode == RHS.Mode;
}
bool operator&(const DebugMode &RHS) const {
return Mode & RHS.Mode;
}
DebugMode operator|(const DebugMode &RHS) {
return DebugMode(Mode | RHS.Mode);
}
DebugMode &operator|=(const DebugMode &RHS) {
Mode |= RHS.Mode;
return *this;
}
};
/*
* LLVMDebug provides facilities to debug the LLVM translator, based on the
* debug levels.
*/
class LLVMDebug {
public:
enum LLVMDebugMode {
D_NONE = ((uint64_t)0),
D_LLVM = ((uint64_t)1 << 0),
D_INASM = ((uint64_t)1 << 1),
D_OP = ((uint64_t)1 << 2),
D_OUTASM = ((uint64_t)1 << 3),
D_IR = ((uint64_t)1 << 4),
D_IR_OPT = ((uint64_t)1 << 5),
D_ENTRY = ((uint64_t)1 << 6),
D_VERIFY = ((uint64_t)1 << 7),
D_PASS = ((uint64_t)1 << 8),
D_ANNOTATE = ((uint64_t)1 << 9),
D_HPM = ((uint64_t)1 << 10),
D_ASM = (D_INASM | D_OP | D_OUTASM),
D_DEBUG = (D_LLVM | D_IR_OPT | D_OUTASM | D_PASS),
D_ALL = (D_LLVM | D_INASM | D_OP | D_OUTASM | D_IR | D_IR_OPT |
D_ENTRY | D_VERIFY | D_PASS | D_ANNOTATE | D_HPM),
};
LLVMDebug() : Mode(D_NONE)
{
hqemu_out.reset(new llvm::raw_fd_ostream(STDOUT_FILENO, false, true));
hqemu_dbg.reset(new llvm::raw_fd_ostream(STDERR_FILENO, false, true));
std::string Str("");
gettimeofday(&uptime, nullptr);
ParseDebugMode(Str, false);
hqemu_null.SetUnbuffered();
}
DebugMode &getDebugMode() {
return Mode;
}
DebugMode &getDebugMode(LLVMDebugMode M) {
if (Modes.find(M) == Modes.end())
M = D_NONE;
return *Modes[M];
}
void setDebugMode(std::string &DebugLevel, std::string &DebugFile) {
ParseDebugMode(DebugLevel);
if (DebugFile != "") {
std::error_code EC;
auto OS = new llvm::raw_fd_ostream(DebugFile, EC,
llvm::sys::fs::F_Text);
if (EC) {
*hqemu_dbg << "Error: failed to open debug file " << DebugFile
<< ". (" << EC.message().c_str() << ")\n";
}
OS->SetUnbuffered();
hqemu_dbg.reset(OS);
}
}
void Flush() {
hqemu_dbg->flush();
}
void error(const char *fname, const char *fmt, ...) {
static char str[256] = {'\0'};
va_list ap;
va_start(ap, fmt);
vsprintf(str, fmt, ap);
va_end(ap);
*hqemu_dbg << timestamp() << " Error: " << fname << " - " << str;
exit(0);
}
llvm::raw_ostream &output() {
return *hqemu_out;
}
llvm::raw_ostream &debug() {
return *hqemu_dbg;
}
llvm::raw_ostream &operator<<(DebugMode &M) {
if (M & Mode) {
*hqemu_dbg << timestamp() << " ";
return *hqemu_dbg;
}
return hqemu_null;
};
private:
llvm::raw_null_ostream hqemu_null;
std::unique_ptr<llvm::raw_fd_ostream> hqemu_out;
std::unique_ptr<llvm::raw_fd_ostream> hqemu_dbg;
struct timeval uptime; /* The startup time of the DBT */
DebugMode Mode; /* The debug level */
std::map<LLVMDebugMode, DebugMode*> Modes;
std::string timestamp() {
struct timeval tv;
char timestamp[32];
gettimeofday(&tv, 0);
timersub(&tv, &uptime, &tv);
strftime(timestamp, 32, "[%H:%M:%S", gmtime(&tv.tv_sec));
sprintf(timestamp + 9, ".%06ld]", tv.tv_usec);
return timestamp;
}
void ParseDebugMode(std::string &DebugLevel, bool Update=true) {
static std::string debug_str[] = {
"none", "llvm", "in_asm", "op", "out_asm", "ir", "ir_opt",
"entry", "verify", "pass", "annotate", "hpm", "asm", "debug",
"all"
};
static LLVMDebugMode debug_enum[] = {
D_NONE, D_LLVM, D_INASM, D_OP, D_OUTASM, D_IR, D_IR_OPT,
D_ENTRY, D_VERIFY, D_PASS, D_ANNOTATE, D_HPM, D_ASM, D_DEBUG,
D_ALL
};
if (!Update) {
for (auto M : debug_enum)
Modes[M] = new DebugMode(M);
return;
}
if (DebugLevel.empty())
return;
std::istringstream ss(DebugLevel);
std::string token;
while(std::getline(ss, token, ',')) {
for (unsigned i = 0, e = ARRAY_SIZE(debug_enum); i != e; ++i) {
if (token == debug_str[i]) {
Mode |= getDebugMode(debug_enum[i]);
break;
}
}
}
}
};
extern LLVMDebug DM;
/* Print messages to stdout. Should not use this function in release mode. */
static inline llvm::raw_ostream &out() {
return DM.output();
}
/* Print messages to stderr, controlled by DebugMode. */
static inline LLVMDebug &dbg() {
return DM;
}
/* Print error messages to stderr and terminate the process. */
#define hqemu_error(msg,args...) do { DM.error(__func__,msg,##args); } while(0)
/* Macros to get defined DebugMode. */
#define DEBUG_NONE DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_NONE)
#define DEBUG_LLVM DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_LLVM)
#define DEBUG_INASM DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_INASM)
#define DEBUG_OP DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_OP)
#define DEBUG_OUTASM DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_OUTASM)
#define DEBUG_IR DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_IR)
#define DEBUG_IR_OPT DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_IR_OPT)
#define DEBUG_ENTRY DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_ENTRY)
#define DEBUG_VERIFY DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_VERIFY)
#define DEBUG_PASS DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_PASS)
#define DEBUG_ANNOTATE DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_ANNOTATE)
#define DEBUG_HPM DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_HPM)
#define DEBUG_ASM DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_ASM)
#define DEBUG_DEBUG DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_DEBUG)
#define DEBUG_ALL DM.getDebugMode(LLVMDebug::LLVMDebugMode::D_ALL)
/*
* Binary disassembler using MCDisassembler.
*/
class MCDisasm {
const llvm::MCDisassembler *DisAsm;
const llvm::MCSubtargetInfo *STI;
llvm::MCInstPrinter *IP;
const llvm::MCInstrAnalysis *MIA;
bool HostDisAsm;
bool NoShowRawInsn;
MCDisasm(const llvm::Target *TheTarget, std::string TripleName,
bool isHost);
void DumpBytes(llvm::ArrayRef<uint8_t> bytes, llvm::raw_ostream &OS);
public:
~MCDisasm();
void PrintInAsm(uint64_t Addr, uint64_t Size, uint64_t GuestAddr);
void PrintOutAsm(uint64_t Addr, uint64_t Size);
static MCDisasm *CreateMCDisasm(std::string TripleName, bool isHost);
};
#endif
/*
* vim: ts=8 sts=4 sw=4 expandtab
*/
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