#include "devices.h"
+class sim_t;
+
+typedef struct {
+ bool haltreq;
+ bool resumereq;
+ unsigned hartsel;
+ bool hartreset;
+ bool dmactive;
+ bool ndmreset;
+} dmcontrol_t;
+
+typedef struct {
+ bool allnonexistant;
+ bool anynonexistant;
+ bool allunavail;
+ bool anyunavail;
+ bool allrunning;
+ bool anyrunning;
+ bool allhalted;
+ bool anyhalted;
+ bool allresumeack;
+ bool anyresumeack;
+ bool authenticated;
+ bool authbusy;
+ bool cfgstrvalid;
+ unsigned versionhi;
+ unsigned versionlo;
+} dmstatus_t;
+
+typedef enum cmderr {
+ CMDERR_NONE = 0,
+ CMDERR_BUSY = 1,
+ CMDERR_NOTSUP = 2,
+ CMDERR_EXCEPTION = 3,
+ CMDERR_HALTRESUME = 4,
+ CMDERR_OTHER = 7
+} cmderr_t;
+
+typedef struct {
+ bool busy;
+ unsigned datacount;
+ unsigned progsize;
+ cmderr_t cmderr;
+} abstractcs_t;
+
+typedef struct {
+ unsigned autoexecprogbuf;
+ unsigned autoexecdata;
+} abstractauto_t;
+
class debug_module_t : public abstract_device_t
{
public:
+ debug_module_t(sim_t *sim);
+
+ 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);
- void ram_write32(unsigned int index, uint32_t value);
- uint32_t ram_read32(unsigned int index);
-
- 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 set_halt_notification(uint32_t hartid) {
- halt_notification.insert(hartid);
- }
- void clear_halt_notification(uint32_t hartid) {
- halt_notification.erase(hartid);
- }
- bool get_halt_notification(uint32_t hartid) const {
- return halt_notification.find(hartid) != halt_notification.end();
- }
+ // 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;
- // Track which halt notifications from debugger to module are set.
- std::set<uint32_t> halt_notification;
- char debug_ram[DEBUG_RAM_SIZE];
+ static const unsigned datasize = 2;
+ static const unsigned progsize = 16;
+ static const unsigned debug_data_start = 0x380;
+ static const unsigned debug_progbuf_start = debug_data_start - progsize*4;
+
+ static const unsigned debug_abstract_size = 2;
+ static const unsigned debug_abstract_start = debug_progbuf_start - debug_abstract_size*4;
+
+ sim_t *sim;
+
+ uint8_t debug_rom_whereto[4];
+ uint8_t debug_abstract[debug_abstract_size * 4];
+ uint8_t program_buffer[progsize * 4];
+ uint8_t dmdata[datasize * 4];
+
+ bool halted[1024];
+ bool resumeack[1024];
+ uint8_t debug_rom_flags[1024];
+
+ void write32(uint8_t *rom, unsigned int index, uint32_t value);
+ uint32_t read32(uint8_t *rom, unsigned int index);
+
+ dmcontrol_t dmcontrol;
+ dmstatus_t dmstatus;
+ abstractcs_t abstractcs;
+ abstractauto_t abstractauto;
+ uint32_t command;
+
+ processor_t *current_proc() const;
+ void reset();
+ bool perform_abstract_command();
};
#endif