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#ifndef _RISCV_TRIGGERS_H
#define _RISCV_TRIGGERS_H
#include <vector>
#include <optional>
#include "decode.h"
namespace triggers {
typedef enum {
OPERATION_EXECUTE,
OPERATION_STORE,
OPERATION_LOAD,
} operation_t;
typedef enum
{
ACTION_DEBUG_EXCEPTION = MCONTROL_ACTION_DEBUG_EXCEPTION,
ACTION_DEBUG_MODE = MCONTROL_ACTION_DEBUG_MODE,
ACTION_TRACE_START = MCONTROL_ACTION_TRACE_START,
ACTION_TRACE_STOP = MCONTROL_ACTION_TRACE_STOP,
ACTION_TRACE_EMIT = MCONTROL_ACTION_TRACE_EMIT
} action_t;
typedef enum {
MATCH_NONE,
MATCH_FIRE_BEFORE,
MATCH_FIRE_AFTER
} match_result_t;
class matched_t
{
public:
matched_t(triggers::operation_t operation, reg_t address, action_t action) :
operation(operation), address(address), action(action) {}
triggers::operation_t operation;
reg_t address;
action_t action;
};
class trigger_t {
public:
virtual match_result_t memory_access_match(processor_t * const proc,
operation_t operation, reg_t address, std::optional<reg_t> data) = 0;
virtual reg_t tdata1_read(const processor_t * const proc) const noexcept = 0;
virtual bool tdata1_write(processor_t * const proc, const reg_t val) noexcept = 0;
virtual reg_t tdata2_read(const processor_t * const proc) const noexcept = 0;
virtual bool tdata2_write(processor_t * const proc, const reg_t val) noexcept = 0;
virtual bool chain() const { return false; }
virtual bool execute() const { return false; }
virtual bool store() const { return false; }
virtual bool load() const { return false; }
bool dmode = false;
action_t action = ACTION_DEBUG_EXCEPTION;
bool hit = false;
virtual ~trigger_t() {};
protected:
trigger_t() {}
};
class mcontrol_t : public trigger_t {
public:
typedef enum
{
MATCH_EQUAL = MCONTROL_MATCH_EQUAL,
MATCH_NAPOT = MCONTROL_MATCH_NAPOT,
MATCH_GE = MCONTROL_MATCH_GE,
MATCH_LT = MCONTROL_MATCH_LT,
MATCH_MASK_LOW = MCONTROL_MATCH_MASK_LOW,
MATCH_MASK_HIGH = MCONTROL_MATCH_MASK_HIGH
} match_t;
virtual reg_t tdata1_read(const processor_t * const proc) const noexcept override;
virtual bool tdata1_write(processor_t * const proc, const reg_t val) noexcept override;
virtual reg_t tdata2_read(const processor_t * const proc) const noexcept override;
virtual bool tdata2_write(processor_t * const proc, const reg_t val) noexcept override;
virtual bool chain() const override { return chain_bit; }
virtual bool execute() const override { return execute_bit; }
virtual bool store() const override { return store_bit; }
virtual bool load() const override { return load_bit; }
virtual match_result_t memory_access_match(processor_t * const proc,
operation_t operation, reg_t address, std::optional<reg_t> data) override;
private:
bool simple_match(unsigned xlen, reg_t value) const;
public:
bool select = false;
bool timing = false;
bool chain_bit = false;
match_t match = MATCH_EQUAL;
bool m = false;
bool s = false;
bool u = false;
bool execute_bit = false;
bool store_bit = false;
bool load_bit = false;
reg_t tdata2;
};
class module_t {
public:
module_t(unsigned count);
~module_t();
unsigned count() const { return triggers.size(); }
match_result_t memory_access_match(action_t * const action,
operation_t operation, reg_t address, std::optional<reg_t> data);
reg_t tdata1_read(const processor_t * const proc, unsigned index) const noexcept;
bool tdata1_write(processor_t * const proc, unsigned index, const reg_t val) noexcept;
reg_t tdata2_read(const processor_t * const proc, unsigned index) const noexcept;
bool tdata2_write(processor_t * const proc, unsigned index, const reg_t val) noexcept;
processor_t *proc;
private:
std::vector<trigger_t *> triggers;
};
};
#endif
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