mirror of
https://github.com/ZornsLemma/lib6502-jit.git
synced 2024-10-20 02:23:59 +00:00
126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/* Copyright (c) 2005 Ian Piumarta
|
|
* Copyright (c) 2014 Steven Flintham
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the 'Software'),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, provided that the above copyright notice(s) and this
|
|
* permission notice appear in all copies of the Software and that both the
|
|
* above copyright notice(s) and this permission notice appear in supporting
|
|
* documentation.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED 'AS IS'. USE ENTIRELY AT YOUR OWN RISK.
|
|
*/
|
|
|
|
#include <setjmp.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "lib6502.h"
|
|
#include "test-utils.h"
|
|
|
|
static jmp_buf env;
|
|
|
|
int done(M6502 *mpu, uint16_t address, uint8_t data)
|
|
{
|
|
char buffer[64];
|
|
M6502_dump_masked(mpu, buffer);
|
|
printf("\nBRK instruction: address %04X opcode %02X\n%s\n", address, data, buffer);
|
|
longjmp(env, 1);
|
|
exit(0);
|
|
}
|
|
|
|
int call(M6502 *mpu, uint16_t address, uint8_t data)
|
|
{
|
|
char buffer[64];
|
|
M6502_dump_masked(mpu, buffer);
|
|
printf("\ncall: address %04X opcode %02X\n%s\n", address, data, buffer);
|
|
mpu->registers->pc = address;
|
|
longjmp(env, 2);
|
|
return 0;
|
|
}
|
|
|
|
int ill(M6502 *mpu, uint16_t address, uint8_t data)
|
|
{
|
|
char buffer[64];
|
|
M6502_dump_masked(mpu, buffer);
|
|
printf("\nill: address %04X opcode %02X memory %02X\n%s\n", address, data, mpu->memory[address], buffer);
|
|
longjmp(env, 3);
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
M6502 *mpu = M6502_new(0, 0, 0);
|
|
parse_args(argc, argv, mpu);
|
|
|
|
unsigned pc = 0x1000;
|
|
|
|
/* Read and write callbacks don't provide the correct, up-to-date CPU state
|
|
* in the M6502 object, so this trick is a non-starter with them.
|
|
*/
|
|
|
|
M6502_setCallback(mpu, call, 0, done);
|
|
M6502_setCallback(mpu, call, 0x2000, call);
|
|
M6502_setCallback(mpu, call, 0x3000, call);
|
|
M6502_setCallback(mpu, call, 0x4000, call);
|
|
M6502_setCallback(mpu, illegal_instruction, 0x13, ill );
|
|
M6502_setCallback(mpu, illegal_instruction, 0x44, ill );
|
|
M6502_setCallback(mpu, illegal_instruction, 0x5c, ill );
|
|
|
|
# define gen1(X) (mpu->memory[pc++]= (uint8_t)(X))
|
|
# define gen2(X,Y) gen1(X); gen1(Y)
|
|
# define gen3(X,Y,Z) gen1(X); gen2(Y,Z)
|
|
|
|
gen1(0x13 );
|
|
gen1(0x44 );
|
|
gen1(0x13 ); // not executed, 0x44 is a two-byte illegal instruction
|
|
gen1(0x5C );
|
|
gen1(0x13 ); // not executed, 0x5C is a two-byte illegal instruction
|
|
gen1(0x13 ); // not executed, 0x5C is a two-byte illegal instruction
|
|
gen3(0x20,0x00,0x20); // JSR &2000
|
|
gen3(0xad,0x00,0x50); // LDA &5000
|
|
gen2(0x00,0x00 ); // BRK
|
|
|
|
pc = 0x2000;
|
|
gen3(0x8d,0x00,0x50); // STA &5000
|
|
gen3(0x4c,0x00,0x30); // JMP &3000
|
|
|
|
pc = 0x3000;
|
|
gen2(0xa9,0x00 ); // LDA #0
|
|
gen3(0x8d,0x76,0x32); // STA &3276
|
|
gen2(0xa9,0x40 ); // LDA #&40
|
|
gen3(0x8d,0x77,0x32); // STA &3277
|
|
gen3(0x6c,0x76,0x32); // JMP (&3276)
|
|
|
|
pc = 0x4000;
|
|
gen1(0x60 ); // RTS
|
|
|
|
M6502_setVector(mpu, RST, 0x1000);
|
|
|
|
M6502_reset(mpu);
|
|
while (1)
|
|
{
|
|
volatile int result = setjmp(env);
|
|
if (result == 0)
|
|
{
|
|
M6502_run(mpu);
|
|
}
|
|
else
|
|
{
|
|
printf("\nsetjmp() returned %d\n", result);
|
|
if (result == 1)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
M6502_delete(mpu);
|
|
|
|
return 0;
|
|
}
|