debug.c File Reference

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

Functions
int	c8_debug_repl (C8 *c8)
	Debug command line loop.
int	c8_has_breakpoint (C8 *c8, uint16_t pc)
	Check if breakpoint exists at address pc.

Variables
const char *	c8_args []
const char *	c8_cmds []

Detailed Description

Note

NOT EXPORTED

Stuff related to debug mode.

Function Documentation

c8_debug_repl()

int c8_debug_repl

(

C8 *

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 C8_DEBUG_CONTINUE)
• quit command is evaluated (return C8_DEBUG_QUIT)
• next command is evaluated (return C8_DEBUG_STEP)

Parameters

c8	the current CHIP-8 state

Returns

C8_DEBUG_CONTINUE, C8_DEBUG_STEP, or C8_DEBUG_QUIT

c8_has_breakpoint()

int c8_has_breakpoint	(	C8 *	c8,
		uint16_t	pc
	)

Check if breakpoint exists at address pc.

This function checks if there is a breakpoint set at the specified program counter (pc) address in the C8 structure. It returns 1 if a breakpoint exists at that address, and 0 if no breakpoint is set.

Parameters

c8	C8 to check breakpoints of
pc	address to check for breakpoint at

Returns

1 if yes, 0 if no

Variable Documentation

c8_args

const char* c8_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 C8_Argument enumerator.

c8_cmds

const char* c8_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 C8_Command enumerator.