#include "debug.h"
#include "../chip8.h"
#include "..//font.h"
#include "..//decode.h"
#include "exception.h"
#include "util.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Data Structures
union	ArgValue
	Stores an argument's value (string or int) More...

struct	arg_t
	Represents an argument for a command with a type and value. More...

struct	cmd_t
	Represents a command with an ID, argument ID, and associated argument. More...

Enumerations
enum	Command { CMD_NONE = -1 , CMD_ADD_BREAKPOINT = 0 , CMD_RM_BREAKPOINT , CMD_CONTINUE , CMD_NEXT , CMD_SET , CMD_LOAD , CMD_SAVE , CMD_PRINT , CMD_HELP , CMD_QUIT , CMD_LOADFLAGS , CMD_SAVEFLAGS }
	Represents command types. More...

enum	Argument { ARG_NONE = -1 , ARG_SP = 0 , ARG_DT , ARG_ST , ARG_PC , ARG_I , ARG_VK , ARG_STACK , ARG_BG , ARG_FG , ARG_SFONT , ARG_BFONT , ARG_QUIRKS , ARG_V , ARG_R , ARG_ADDR , ARG_FILE }
	Represents argument types. More...

Functions
int	debug_repl (c8_t *c8)
	Debug command line loop. More...

int	has_breakpoint (c8_t *c8, uint16_t pc)
	Check if breakpoint exists at address pc. More...

Variables
const char *	args []

const char *	cmds []

Detailed Description

Note: NOT EXPORTED

Stuff related to debug mode.

Enumeration Type Documentation

◆ Argument

enum Argument

Represents argument types.

This enumeration defines all possible debug mode arguments.

Enumerator
ARG_NONE
ARG_SP
ARG_DT
ARG_ST
ARG_PC
ARG_I
ARG_VK
ARG_STACK
ARG_BG
ARG_FG
ARG_SFONT
ARG_BFONT
ARG_QUIRKS
ARG_V
ARG_R
ARG_ADDR
ARG_FILE

◆ Command

enum Command

Represents command types.

This enumeration defines all possible debug mode commands

Enumerator
CMD_NONE
CMD_ADD_BREAKPOINT
CMD_RM_BREAKPOINT
CMD_CONTINUE
CMD_NEXT
CMD_SET
CMD_LOAD
CMD_SAVE
CMD_PRINT
CMD_HELP
CMD_QUIT
CMD_LOADFLAGS
CMD_SAVEFLAGS

Function Documentation

◆ debug_repl()

int debug_repl ( c8_t * c8 )

Debug command line loop.

This function parses user commands from stdin and prints the result until one of the following conditions is met:

continue command is evaluated (return DEBUG_CONTINUE)
quit command is evaluated (return DEBUG_QUIT)
next command is evaluated (return DEBUG_STEP)

Parameters

c8	the current CHIP-8 state

Returns: DEBUG_CONTINUE, DEBUG_STEP, or DEBUG_QUIT

◆ has_breakpoint()

int has_breakpoint	(	c8_t *	c8,
		uint16_t	pc
	)

Check if breakpoint exists at address pc.

Parameters

c8	`c8_t` to check breakpoints of
pc	address to check for breakpoint at

Returns: 1 if yes, 0 if no

Variable Documentation

◆ args

const char* args[]

Initial value:

= {
    "SP",
    "DT",
    "ST",
    "PC",
    "I",
    "VK",
    "stack",
    "bg",
    "fg",
    "sfont",
    "bfont",
    "quirks",
}

These are string values of all possible argument, ordered to match the Argument enumerator.

◆ cmds

const char* cmds[]

Initial value:

= {
    "break",
    "rmbreak",
    "continue",
    "next",
    "set",
    "load",
    "save",
    "print",
    "help",
    "quit",
    "loadflags",
    "saveflags",
}

These are string values of all possible commands, ordered to match the Command enumerator.

Data Structures

Enumerations

Functions

Variables