92 lines
3.6 KiB
C
92 lines
3.6 KiB
C
#include <debug.h>
|
|
#include <stdio.h>
|
|
#include <cpu.h>
|
|
#include <emu.h>
|
|
#include <bus.h>
|
|
#include <string.h>
|
|
|
|
static debug_context ctx;
|
|
|
|
debug_context *debug_get_context() {
|
|
return &ctx;
|
|
}
|
|
|
|
static char **dissasembly;
|
|
|
|
void debug_init() {
|
|
dissasembly = malloc(sizeof(char*) * 0x10000);
|
|
for(int i = 0; i < 0x10000; i++) {
|
|
dissasembly[i] = malloc(sizeof(char) * 100);
|
|
}
|
|
}
|
|
|
|
void debug_update() {
|
|
switch(ctx.state) {
|
|
case DS_MAIN:
|
|
char flags[16];
|
|
sprintf(flags, "%c%c%c%c",
|
|
cpu_get_context()->regs.f & (1 << 7) ? 'Z' : '-',
|
|
cpu_get_context()->regs.f & (1 << 6) ? 'N' : '-',
|
|
cpu_get_context()->regs.f & (1 << 5) ? 'H' : '-',
|
|
cpu_get_context()->regs.f & (1 << 4) ? 'C' : '-'
|
|
);
|
|
|
|
char inst[16];
|
|
inst_to_str(cpu_get_context(), inst);
|
|
printf("%08lX - %04X: %-12s (%02X %02X %02X) A: %02X F: %s BC: %02X%02X DE: %02X%02X HL: %02X%02X SP: %04X PC: %04X\n", emu_get_context()->ticks, cpu_get_context()->inst_pc, inst, cpu_get_context()->cur_opcode, bus_read(cpu_get_context()->inst_pc+1), bus_read(cpu_get_context()->inst_pc+2), cpu_get_context()->regs.a, flags, cpu_get_context()->regs.b, cpu_get_context()->regs.c, cpu_get_context()->regs.d, cpu_get_context()->regs.e, cpu_get_context()->regs.h, cpu_get_context()->regs.l, cpu_get_context()->regs.sp, cpu_get_context()->regs.pc);
|
|
printf("> ");
|
|
char cmd[128];
|
|
scanf("%s", cmd);
|
|
if(!strcmp(cmd, "q")) {
|
|
emu_get_context()->die = true;
|
|
emu_get_context()->debug = false;
|
|
emu_get_context()->paused = false;
|
|
emu_stop();
|
|
} else if(!strcmp(cmd, "r")) {
|
|
emu_get_context()->debug = false;
|
|
emu_get_context()->paused = false;
|
|
} else if(!strcmp(cmd, "d")) {
|
|
ctx.dissasembly_target = cpu_get_context()->inst_pc;
|
|
ctx.state = DS_DISASSEMBLE;
|
|
} else if(!strcmp(cmd, "da")) {
|
|
scanf("%d", &ctx.dissasembly_target);
|
|
ctx.state = DS_DISASSEMBLE;
|
|
} else if(!strcmp(cmd, "du")) {
|
|
ctx.dissasembly_target--;
|
|
ctx.state = DS_DISASSEMBLE;
|
|
} else if(!strcmp(cmd, "dd")) {
|
|
scanf("%d", &ctx.dissasembly_target);
|
|
ctx.state = DS_DISASSEMBLE;
|
|
} else if(cmd[0] == 's') {
|
|
int steps;
|
|
scanf("%d", &steps);
|
|
printf("adding %d steps\n", steps);
|
|
emu_get_context()->step += steps;
|
|
emu_get_context()->debug = false;
|
|
}
|
|
break;
|
|
case DS_DISASSEMBLE:
|
|
cpu_context cpu_ctx = {0};
|
|
u16 i = 0;
|
|
while (cpu_ctx.regs.pc <= 0xFFFF) {
|
|
u16 pc = cpu_ctx.regs.pc;
|
|
fetch_instruction(&cpu_ctx);
|
|
fetch_data(&cpu_ctx);
|
|
char inst[16];
|
|
inst_to_str(cpu_get_context(), inst);
|
|
sprintf(dissasembly[i], "%04X: %s", pc, inst);
|
|
if(pc == cpu_get_context()->inst_pc) {
|
|
ctx.dissasembly_scroll = i - 5;
|
|
ctx.dissasembly_pc = i;
|
|
}
|
|
i++;
|
|
if(cpu_ctx.regs.pc < pc)
|
|
break;
|
|
}
|
|
for(int j = ctx.dissasembly_scroll; j < ctx.dissasembly_pc+6; j++) {
|
|
printf("%c %s\n", j == ctx.dissasembly_pc ? '>' : ' ', dissasembly[j]);
|
|
}
|
|
ctx.state = DS_MAIN;
|
|
break;
|
|
}
|
|
} |