#include "devices.h"
-class debug_module_t : public abstract_device_t
+class sim_t;
+
+typedef struct {
+ bool haltreq;
+ bool resumereq;
+ enum {
+ HARTSTATUS_HALTED,
+ HARTSTATUS_RUNNING,
+ HARTSTATUS_UNAVAILABLE,
+ HARTSTATUS_NOTEXIST
+ } hartstatus;
+ unsigned hartsel;
+ bool hartreset;
+ bool dmactive;
+ bool reset;
+ bool authenticated;
+ bool authbusy;
+ unsigned version;
+} dmcontrol_t;
+
+typedef struct {
+ bool autoexec7;
+ bool autoexec6;
+ bool autoexec5;
+ bool autoexec4;
+ bool autoexec3;
+ bool autoexec2;
+ bool autoexec1;
+ bool autoexec0;
+ enum {
+ CMDERR_NONE = 0,
+ CMDERR_BUSY = 1,
+ CMDERR_NOTSUP = 2,
+ CMDERR_EXCEPTION = 3,
+ CMDERR_HALTRESUME = 4,
+ CMDERR_OTHER = 7
+ } cmderr;
+ bool busy;
+ unsigned datacount;
+} abstractcs_t;
+
+class debug_module_data_t : public abstract_device_t
{
public:
- debug_module_t();
+ debug_module_data_t();
bool load(reg_t addr, size_t len, uint8_t* bytes);
bool store(reg_t addr, size_t len, const uint8_t* bytes);
- char* page(reg_t paddr);
- void ram_write32(unsigned int index, uint32_t value);
+ uint32_t read32(reg_t addr) const;
+ void write32(reg_t addr, uint32_t value);
+
+ uint8_t data[DEBUG_EXCHANGE_SIZE];
+};
+
+class debug_module_t : public abstract_device_t
+{
+ public:
+ debug_module_t(sim_t *sim);
- void set_interrupt(uint32_t hartid) {
- interrupt.insert(hartid);
- }
- void clear_interrupt(uint32_t hartid) {
- interrupt.erase(hartid);
- }
- bool get_interrupt(uint32_t hartid) const {
- return interrupt.find(hartid) != interrupt.end();
- }
+ void add_device(bus_t *bus);
+
+ bool load(reg_t addr, size_t len, uint8_t* bytes);
+ bool store(reg_t addr, size_t len, const uint8_t* bytes);
+
+ // Debug Module Interface that the debugger (in our case through JTAG DTM)
+ // uses to access the DM.
+ // Return true for success, false for failure.
+ bool dmi_read(unsigned address, uint32_t *value);
+ bool dmi_write(unsigned address, uint32_t value);
private:
- // Track which interrupts from module to debugger are set.
- std::set<uint32_t> interrupt;
- // TODO: use PGSIZE, which requires solving some circular include dependencies.
- char raw_page[4096];
+ static const unsigned progsize = 8;
+
+ sim_t *sim;
+
+ uint8_t debug_rom_entry[DEBUG_ROM_ENTRY_SIZE];
+ uint8_t debug_rom_code[DEBUG_ROM_CODE_SIZE];
+ uint8_t debug_rom_exception[DEBUG_ROM_EXCEPTION_SIZE];
+ uint8_t program_buffer[progsize * 4];
+ bool halted[1024];
+ debug_module_data_t dmdata;
+ // Instruction that will be placed at the current hart's ROM entry address
+ // after the current action has completed.
+ uint32_t next_action;
+ bool action_executed;
+
+ void write32(uint8_t *rom, unsigned int index, uint32_t value);
+ uint32_t read32(uint8_t *rom, unsigned int index);
+
+ dmcontrol_t dmcontrol;
+ abstractcs_t abstractcs;
+ uint32_t command;
+
+ processor_t *current_proc() const;
+ void reset();
+ bool perform_abstract_command();
};
#endif