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115 lines
2.6 KiB
115 lines
2.6 KiB
// See LICENSE for license details.
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#ifndef _RISCV_DEBUG_MODULE_H
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#define _RISCV_DEBUG_MODULE_H
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#include <set>
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#include "devices.h"
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class sim_t;
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typedef struct {
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bool haltreq;
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bool resumereq;
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unsigned hartsel;
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bool hartreset;
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bool dmactive;
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bool ndmreset;
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} dmcontrol_t;
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typedef struct {
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bool allnonexistant;
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bool anynonexistant;
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bool allunavail;
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bool anyunavail;
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bool allrunning;
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bool anyrunning;
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bool allhalted;
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bool anyhalted;
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bool allresumeack;
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bool anyresumeack;
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bool authenticated;
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bool authbusy;
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bool cfgstrvalid;
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unsigned versionhi;
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unsigned versionlo;
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} dmstatus_t;
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typedef enum cmderr {
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CMDERR_NONE = 0,
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CMDERR_BUSY = 1,
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CMDERR_NOTSUP = 2,
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CMDERR_EXCEPTION = 3,
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CMDERR_HALTRESUME = 4,
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CMDERR_OTHER = 7
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} cmderr_t;
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typedef struct {
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bool busy;
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unsigned datacount;
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unsigned progsize;
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cmderr_t cmderr;
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} abstractcs_t;
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typedef struct {
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unsigned autoexecprogbuf;
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unsigned autoexecdata;
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} abstractauto_t;
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class debug_module_t : public abstract_device_t
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{
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public:
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debug_module_t(sim_t *sim, unsigned progsize);
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~debug_module_t();
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void add_device(bus_t *bus);
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bool load(reg_t addr, size_t len, uint8_t* bytes);
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bool store(reg_t addr, size_t len, const uint8_t* bytes);
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// Debug Module Interface that the debugger (in our case through JTAG DTM)
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// uses to access the DM.
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// Return true for success, false for failure.
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bool dmi_read(unsigned address, uint32_t *value);
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bool dmi_write(unsigned address, uint32_t value);
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private:
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static const unsigned datasize = 2;
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// Size of program_buffer in 32-bit words, as exposed to the rest of the
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// world.
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unsigned progsize;
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// Actual size of the program buffer, which is 1 word bigger than we let on
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// to implement the implicit ebreak at the end.
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unsigned program_buffer_bytes;
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static const unsigned debug_data_start = 0x380;
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unsigned debug_progbuf_start;
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static const unsigned debug_abstract_size = 2;
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unsigned debug_abstract_start;
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sim_t *sim;
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uint8_t debug_rom_whereto[4];
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uint8_t debug_abstract[debug_abstract_size * 4];
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uint8_t *program_buffer;
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uint8_t dmdata[datasize * 4];
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bool halted[1024];
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bool resumeack[1024];
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uint8_t debug_rom_flags[1024];
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void write32(uint8_t *rom, unsigned int index, uint32_t value);
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uint32_t read32(uint8_t *rom, unsigned int index);
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dmcontrol_t dmcontrol;
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dmstatus_t dmstatus;
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abstractcs_t abstractcs;
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abstractauto_t abstractauto;
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uint32_t command;
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processor_t *current_proc() const;
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void reset();
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bool perform_abstract_command();
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};
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#endif
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