#include "decode.h"
#include "config.h"
#include <cstring>
-#include <memory>
#include <vector>
+#include <map>
class processor_t;
class mmu_t;
insn_func_t rv64;
};
+struct commit_log_reg_t
+{
+ reg_t addr;
+ reg_t data;
+};
+
// architectural state of a RISC-V hart
struct state_t
{
regfile_t<freg_t, NFPR, false> FPR;
// control and status registers
- reg_t epc;
- reg_t badvaddr;
- reg_t evec;
- reg_t ptbr;
- reg_t pcr_k0;
- reg_t pcr_k1;
- reg_t cause;
+ reg_t mstatus;
+ reg_t mepc;
+ reg_t mbadaddr;
+ reg_t mscratch;
+ reg_t mcause;
+ reg_t sepc;
+ reg_t sbadaddr;
+ reg_t sscratch;
+ reg_t stvec;
+ reg_t sptbr;
+ reg_t scause;
reg_t tohost;
reg_t fromhost;
- reg_t count;
- uint32_t compare;
- uint32_t sr; // only modify the status register using set_pcr()
+ reg_t scount;
+ bool stip;
+ uint32_t stimecmp;
uint32_t fflags;
uint32_t frm;
reg_t load_reservation;
+
+#ifdef RISCV_ENABLE_COMMITLOG
+ commit_log_reg_t log_reg_write;
+#endif
};
// this class represents one processor in a RISC-V machine.
~processor_t();
void set_debug(bool value);
+ void set_histogram(bool value);
void reset(bool value);
void step(size_t n); // run for n cycles
void deliver_ipi(); // register an interprocessor interrupt
bool running() { return run; }
- reg_t set_pcr(int which, reg_t val);
- void set_fromhost(reg_t val);
- void set_interrupt(int which, bool on);
- reg_t get_pcr(int which);
+ void set_csr(int which, reg_t val);
+ void raise_interrupt(reg_t which);
+ reg_t get_csr(int which);
mmu_t* get_mmu() { return mmu; }
state_t* get_state() { return &state; }
extension_t* get_extension() { return ext; }
+ void push_privilege_stack();
+ void pop_privilege_stack();
void yield_load_reservation() { state.load_reservation = (reg_t)-1; }
+ void update_histogram(size_t pc);
void register_insn(insn_desc_t);
void register_extension(extension_t*);
sim_t* sim;
mmu_t* mmu; // main memory is always accessed via the mmu
extension_t* ext;
- std::unique_ptr<disassembler_t> disassembler;
+ disassembler_t* disassembler;
state_t state;
uint32_t id;
+ int xlen;
bool run; // !reset
bool debug;
- bool rv64;
+ bool histogram_enabled;
+ bool serialized;
std::vector<insn_desc_t> instructions;
std::vector<insn_desc_t*> opcode_map;
std::vector<insn_desc_t> opcode_store;
+ std::map<size_t,size_t> pc_histogram;
void take_interrupt(); // take a trap if any interrupts are pending
- void take_trap(trap_t& t); // take an exception
+ void serialize(); // collapse into defined architectural state
+ reg_t take_trap(trap_t& t, reg_t epc); // take an exception
void disasm(insn_t insn); // disassemble and print an instruction
friend class sim_t;