+
+ void set_debug(bool value);
+ void set_histogram(bool value);
+ void reset();
+ void step(size_t n); // run for n cycles
+ void set_csr(int which, reg_t val);
+ reg_t get_csr(int which);
+ mmu_t* get_mmu() { return mmu; }
+ state_t* get_state() { return &state; }
+ unsigned get_xlen() { return xlen; }
+ unsigned get_flen() {
+ return supports_extension('Q') ? 128 :
+ supports_extension('D') ? 64 :
+ supports_extension('F') ? 32 : 0;
+ }
+ extension_t* get_extension() { return ext; }
+ bool supports_extension(unsigned char ext) {
+ if (ext >= 'a' && ext <= 'z') ext += 'A' - 'a';
+ return ext >= 'A' && ext <= 'Z' && ((isa >> (ext - 'A')) & 1);
+ }
+ reg_t legalize_privilege(reg_t);
+ void set_privilege(reg_t);
+ void yield_load_reservation() { state.load_reservation = (reg_t)-1; }
+ void update_histogram(reg_t pc);
+ const disassembler_t* get_disassembler() { return disassembler; }
+
+ void register_insn(insn_desc_t);
+ void register_extension(extension_t*);
+
+ // MMIO slave interface
+ bool load(reg_t addr, size_t len, uint8_t* bytes);
+ bool store(reg_t addr, size_t len, const uint8_t* bytes);
+
+ // When true, display disassembly of each instruction that's executed.
+ bool debug;
+ // When true, take the slow simulation path.
+ bool slow_path();
+ bool halted() { return state.dcsr.cause ? true : false; }
+ bool halt_request;
+
+ // Return the index of a trigger that matched, or -1.
+ inline int trigger_match(trigger_operation_t operation, reg_t address, reg_t data)
+ {
+ if (state.dcsr.cause)
+ return -1;
+
+ bool chain_ok = true;
+
+ for (unsigned int i = 0; i < state.num_triggers; i++) {
+ if (!chain_ok) {
+ chain_ok |= !state.mcontrol[i].chain;
+ continue;
+ }
+
+ if ((operation == OPERATION_EXECUTE && !state.mcontrol[i].execute) ||
+ (operation == OPERATION_STORE && !state.mcontrol[i].store) ||
+ (operation == OPERATION_LOAD && !state.mcontrol[i].load) ||
+ (state.prv == PRV_M && !state.mcontrol[i].m) ||
+ (state.prv == PRV_S && !state.mcontrol[i].s) ||
+ (state.prv == PRV_U && !state.mcontrol[i].u)) {
+ continue;
+ }
+
+ reg_t value;
+ if (state.mcontrol[i].select) {
+ value = data;
+ } else {
+ value = address;
+ }
+
+ // We need this because in 32-bit mode sometimes the PC bits get sign
+ // extended.
+ if (xlen == 32) {
+ value &= 0xffffffff;
+ }
+
+ switch (state.mcontrol[i].match) {
+ case MATCH_EQUAL:
+ if (value != state.tdata2[i])
+ continue;
+ break;
+ case MATCH_NAPOT:
+ {
+ reg_t mask = ~((1 << cto(state.tdata2[i])) - 1);
+ if ((value & mask) != (state.tdata2[i] & mask))
+ continue;
+ }
+ break;
+ case MATCH_GE:
+ if (value < state.tdata2[i])
+ continue;
+ break;
+ case MATCH_LT:
+ if (value >= state.tdata2[i])
+ continue;
+ break;
+ case MATCH_MASK_LOW:
+ {
+ reg_t mask = state.tdata2[i] >> (xlen/2);
+ if ((value & mask) != (state.tdata2[i] & mask))
+ continue;
+ }
+ break;
+ case MATCH_MASK_HIGH:
+ {
+ reg_t mask = state.tdata2[i] >> (xlen/2);
+ if (((value >> (xlen/2)) & mask) != (state.tdata2[i] & mask))
+ continue;
+ }
+ break;
+ }
+
+ if (!state.mcontrol[i].chain) {
+ return i;
+ }
+ chain_ok = true;
+ }
+ return -1;
+ }
+
+ void trigger_updated();