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// See LICENSE for license details.
#ifndef _RISCV_SIM_H
#define _RISCV_SIM_H
#include "cfg.h"
#include "debug_module.h"
#include "devices.h"
#include "log_file.h"
#include "processor.h"
#include "simif.h"
#include <fesvr/htif.h>
#include <vector>
#include <map>
#include <string>
#include <memory>
#include <sys/types.h>
class mmu_t;
class remote_bitbang_t;
class socketif_t;
// this class encapsulates the processors and memory in a RISC-V machine.
class sim_t : public htif_t, public simif_t
{
public:
sim_t(const cfg_t *cfg, bool halted,
std::vector<std::pair<reg_t, mem_t*>> mems,
std::vector<std::pair<reg_t, std::shared_ptr<abstract_device_t>>> plugin_devices,
const std::vector<std::string>& args,
const debug_module_config_t &dm_config, const char *log_path,
bool dtb_enabled, const char *dtb_file,
bool socket_enabled,
FILE *cmd_file); // needed for command line option --cmd
~sim_t();
// run the simulation to completion
int run();
void set_debug(bool value);
void set_histogram(bool value);
// Configure logging
//
// If enable_log is true, an instruction trace will be generated. If
// enable_commitlog is true, so will the commit results
void configure_log(bool enable_log, bool enable_commitlog);
void set_procs_debug(bool value);
void set_remote_bitbang(remote_bitbang_t* remote_bitbang) {
this->remote_bitbang = remote_bitbang;
}
const char* get_dts() { return dts.c_str(); }
processor_t* get_core(size_t i) { return procs.at(i); }
virtual const cfg_t &get_cfg() const override { return *cfg; }
virtual const std::map<size_t, processor_t*>& get_harts() const override { return harts; }
// Callback for processors to let the simulation know they were reset.
virtual void proc_reset(unsigned id) override;
private:
isa_parser_t isa;
const cfg_t * const cfg;
std::vector<std::pair<reg_t, mem_t*>> mems;
std::vector<processor_t*> procs;
std::map<size_t, processor_t*> harts;
std::pair<reg_t, reg_t> initrd_range;
std::string dts;
std::string dtb;
bool dtb_enabled;
std::vector<std::shared_ptr<abstract_device_t>> devices;
std::shared_ptr<clint_t> clint;
std::shared_ptr<plic_t> plic;
bus_t bus;
log_file_t log_file;
FILE *cmd_file; // pointer to debug command input file
socketif_t *socketif;
std::ostream sout_; // used for socket and terminal interface
processor_t* get_core(const std::string& i);
void step(size_t n); // step through simulation
static const size_t INTERLEAVE = 5000;
static const size_t INSNS_PER_RTC_TICK = 100; // 10 MHz clock for 1 BIPS core
static const size_t CPU_HZ = 1000000000; // 1GHz CPU
size_t current_step;
size_t current_proc;
bool debug;
bool histogram_enabled; // provide a histogram of PCs
bool log;
remote_bitbang_t* remote_bitbang;
std::optional<std::function<void()>> next_interactive_action;
// memory-mapped I/O routines
virtual char* addr_to_mem(reg_t paddr) override;
virtual bool mmio_load(reg_t paddr, size_t len, uint8_t* bytes) override;
virtual bool mmio_store(reg_t paddr, size_t len, const uint8_t* bytes) override;
void make_dtb(const char* dtb_file);
void set_rom();
virtual const char* get_symbol(uint64_t paddr) override;
// presents a prompt for introspection into the simulation
void interactive();
// functions that help implement interactive()
void interactive_help(const std::string& cmd, const std::vector<std::string>& args);
void interactive_quit(const std::string& cmd, const std::vector<std::string>& args);
void interactive_run(const std::string& cmd, const std::vector<std::string>& args, bool noisy);
void interactive_run_noisy(const std::string& cmd, const std::vector<std::string>& args);
void interactive_run_silent(const std::string& cmd, const std::vector<std::string>& args);
void interactive_vreg(const std::string& cmd, const std::vector<std::string>& args);
void interactive_reg(const std::string& cmd, const std::vector<std::string>& args);
void interactive_freg(const std::string& cmd, const std::vector<std::string>& args);
void interactive_fregh(const std::string& cmd, const std::vector<std::string>& args);
void interactive_fregs(const std::string& cmd, const std::vector<std::string>& args);
void interactive_fregd(const std::string& cmd, const std::vector<std::string>& args);
void interactive_pc(const std::string& cmd, const std::vector<std::string>& args);
void interactive_priv(const std::string& cmd, const std::vector<std::string>& args);
void interactive_mem(const std::string& cmd, const std::vector<std::string>& args);
void interactive_str(const std::string& cmd, const std::vector<std::string>& args);
void interactive_dumpmems(const std::string& cmd, const std::vector<std::string>& args);
void interactive_mtime(const std::string& cmd, const std::vector<std::string>& args);
void interactive_mtimecmp(const std::string& cmd, const std::vector<std::string>& args);
void interactive_until(const std::string& cmd, const std::vector<std::string>& args, bool noisy);
void interactive_until_silent(const std::string& cmd, const std::vector<std::string>& args);
void interactive_until_noisy(const std::string& cmd, const std::vector<std::string>& args);
reg_t get_reg(const std::vector<std::string>& args);
freg_t get_freg(const std::vector<std::string>& args, int size);
reg_t get_mem(const std::vector<std::string>& args);
reg_t get_pc(const std::vector<std::string>& args);
friend class processor_t;
friend class mmu_t;
// htif
virtual void reset() override;
virtual void idle() override;
virtual void read_chunk(addr_t taddr, size_t len, void* dst) override;
virtual void write_chunk(addr_t taddr, size_t len, const void* src) override;
virtual size_t chunk_align() override { return 8; }
virtual size_t chunk_max_size() override { return 8; }
virtual endianness_t get_target_endianness() const override;
public:
// Initialize this after procs, because in debug_module_t::reset() we
// enumerate processors, which segfaults if procs hasn't been initialized
// yet.
debug_module_t debug_module;
};
extern volatile bool ctrlc_pressed;
#endif
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