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More refactoring and improvements to logging!

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This commit is contained in:
Radosław Kujawa 2018-03-23 13:37:07 +01:00
parent 0c77eeb505
commit 5fddf2c5dc
9 changed files with 102 additions and 74 deletions
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11
src/bus.c
View File

@ -33,6 +33,9 @@ bus_device_add(bus_t *b, device_t *d, uint16_t addr)
dm->addr = addr;
LL_APPEND((b->dm_head), dm);
rk65c02_log(LOG_INFO, "Bus mapping added: %x device %s size %x.",
addr, d->name, d->size);
}
void
@ -71,7 +74,7 @@ bus_access_device(bus_t *t, uint16_t addr, device_t **d, uint16_t *off)
}
if (*d == NULL) {
rk6502_log(LOG_WARN, "Hitting unmapped bus space @ %x!", addr);
rk65c02_log(LOG_WARN, "Hitting unmapped bus space @ %x!", addr);
return;
}
@ -93,7 +96,7 @@ bus_read_1(bus_t *t, uint16_t addr)
val = d->read_1(d, off);
if (t->access_debug)
rk6502_log(LOG_DEBUG, "bus READ @ %x (off %x) value %x\n",
rk65c02_log(LOG_DEBUG, "bus READ @ %x (off %x) value %x\n",
addr, off, val);
return val;
@ -108,7 +111,7 @@ bus_write_1(bus_t *t, uint16_t addr, uint8_t val)
bus_access_device(t, addr, &d, &off);
if (t->access_debug)
rk6502_log(LOG_DEBUG, "bus WRITE @ %x (off %x) value %x\n",
rk65c02_log(LOG_DEBUG, "bus WRITE @ %x (off %x) value %x\n",
addr, off, val);
d->write_1(d, off, val);
@ -163,7 +166,7 @@ bus_load_file(bus_t *t, uint16_t addr, const char *filename)
fd = open(filename, O_RDONLY);
if (fd == -1) {
rk6502_log(LOG_ERROR, "Problem while trying to open file: %s",
rk65c02_log(LOG_ERROR, "Problem while trying to open file: %s",
strerror(errno));
return false;
}

13
src/debug.c
View File

@ -18,6 +18,8 @@ debug_trace_print_all(rk65c02emu_t *e)
{
trace_t *tr;
instruction_t i;
char *instrstr;
char *regsstr;
if (e->trace_head == NULL)
return;
@ -26,11 +28,14 @@ debug_trace_print_all(rk65c02emu_t *e)
i.opcode = tr->opcode;
i.op1 = tr->op1;
i.op2 = tr->op2;
instrstr = instruction_string_get(&i);
regsstr = rk65c02_regs_string_get(tr->regs);
rk6502_log(LOG_TRACE, " %X:\t", tr->address);
instruction_print(&i);
printf("\t");
rk65c02_dump_regs(tr->regs);
rk65c02_log(LOG_TRACE, "%X: %s\t%s", tr->address, instrstr,
regsstr);
free(instrstr);
free(regsstr);
}
}

65
src/instruction.c
View File

@ -2,6 +2,7 @@
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <errno.h>
#include <assert.h>
#include <string.h>
@ -55,59 +56,83 @@ instruction_fetch(bus_t *b, uint16_t addr)
void
instruction_print(instruction_t *i)
{
char *str;
str = instruction_string_get(i);
printf("%s", str);
free(str);
}
char *
instruction_string_get(instruction_t *i)
{
#define INSTR_STR_LEN 16
instrdef_t id;
char *str;
str = malloc(INSTR_STR_LEN);
if (str == NULL) {
rk65c02_log(LOG_CRIT, "Error allocating memory for buffer: %s.",
strerror(errno));
return NULL;
}
memset(str, 0, INSTR_STR_LEN);
id = instruction_decode(i->opcode);
switch (id.mode) {
case IMPLIED:
printf("%s", id.mnemonic);
snprintf(str, INSTR_STR_LEN, "%s", id.mnemonic);
break;
case ACCUMULATOR:
printf("%s A", id.mnemonic);
snprintf(str, INSTR_STR_LEN, "%s A", id.mnemonic);
break;
case IMMEDIATE:
printf("%s #%#02x", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s #%#02x", id.mnemonic, i->op1);
break;
case ZP:
printf("%s %#02x", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s %#02x", id.mnemonic, i->op1);
break;
case ZPX:
printf("%s %#02x,X", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s %#02x,X", id.mnemonic, i->op1);
break;
case ZPY:
printf("%s %#02x,Y", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s %#02x,Y", id.mnemonic, i->op1);
break;
case IZP:
printf("%s (%#02x)", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s (%#02x)", id.mnemonic, i->op1);
break;
case IZPX:
printf("%s (%#02x,X)", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s (%#02x,X)", id.mnemonic, i->op1);
break;
case IZPY:
printf("%s (%#02x),Y", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s (%#02x),Y", id.mnemonic, i->op1);
break;
case ZPR:
printf("%s %#02x,%#02x", id.mnemonic, i->op1, i->op2);
snprintf(str, INSTR_STR_LEN, "%s %#02x,%#02x", id.mnemonic, i->op1, i->op2);
break;
case ABSOLUTE:
printf("%s %#02x%02x", id.mnemonic, i->op2, i->op1);
snprintf(str, INSTR_STR_LEN, "%s %#02x%02x", id.mnemonic, i->op2, i->op1);
break;
case ABSOLUTEX:
printf("%s %#02x%02x,X", id.mnemonic, i->op2, i->op1);
snprintf(str, INSTR_STR_LEN, "%s %#02x%02x,X", id.mnemonic, i->op2, i->op1);
break;
case ABSOLUTEY:
printf("%s %#02x%02x,Y", id.mnemonic, i->op2, i->op1);
snprintf(str, INSTR_STR_LEN, "%s %#02x%02x,Y", id.mnemonic, i->op2, i->op1);
break;
case IABSOLUTE:
printf("%s (%#02x%02x)", id.mnemonic, i->op2, i->op1);
snprintf(str, INSTR_STR_LEN, "%s (%#02x%02x)", id.mnemonic, i->op2, i->op1);
break;
case IABSOLUTEX:
printf("%s (%#02x%02x,X)", id.mnemonic, i->op2, i->op1);
snprintf(str, INSTR_STR_LEN, "%s (%#02x%02x,X)", id.mnemonic, i->op2, i->op1);
break;
case RELATIVE:
printf("%s %#02x", id.mnemonic, i->op1);
snprintf(str, INSTR_STR_LEN, "%s %#02x", id.mnemonic, i->op1);
break;
}
return str;
}
assembler_t
@ -173,7 +198,7 @@ assemble_single_buf(uint8_t **buf, uint8_t *bsize, const char *mnemonic, address
}
if (!found) {
rk6502_log(LOG_ERROR,
rk65c02_log(LOG_ERROR,
"Couldn't find opcode for mnemonic %s mode %x.",
mnemonic, mode);
return false;
@ -182,7 +207,7 @@ assemble_single_buf(uint8_t **buf, uint8_t *bsize, const char *mnemonic, address
*bsize = id.size;
*buf = malloc(id.size);
if(*buf == NULL) {
rk6502_log(LOG_ERROR, "Error allocating assembly buffer.");
rk65c02_log(LOG_ERROR, "Error allocating assembly buffer.");
return false;
}
@ -304,7 +329,7 @@ instruction_data_write_1(rk65c02emu_t *e, instrdef_t *id, instruction_t *i, uint
* PC which is handled within emulation of a given opcode.
*/
default:
rk6502_log(LOG_ERROR,
rk65c02_log(LOG_ERROR,
"unhandled addressing mode for opcode %x\n", i->opcode);
break;
}
@ -371,7 +396,7 @@ instruction_data_read_1(rk65c02emu_t *e, instrdef_t *id, instruction_t *i)
* PC which is handled within emulation of a given opcode.
*/
default:
rk6502_log(LOG_ERROR,
rk65c02_log(LOG_ERROR,
"unhandled addressing mode for opcode %x\n", i->opcode);
break;
}

1
src/instruction.h
View File

@ -51,6 +51,7 @@ typedef struct assembler assembler_t;
instruction_t instruction_fetch(bus_t *, uint16_t);
instrdef_t instruction_decode(uint8_t);
void instruction_print(instruction_t *);
char * instruction_string_get(instruction_t *);
void disassemble(bus_t *, uint16_t);
uint8_t instruction_data_read_1(rk65c02emu_t *, instrdef_t *, instruction_t *);
void instruction_data_write_1(rk65c02emu_t *, instrdef_t *, instruction_t *, uint8_t);

4
src/log.c
View File

@ -16,12 +16,12 @@ static const char *level_str[] = {
static uint8_t level = LOG_INFO;
void rk6502_loglevel_set(uint8_t l)
void rk65c02_loglevel_set(uint8_t l)
{
level = l;
}
void rk6502_log(uint8_t l, const char* fmt, ...)
void rk65c02_log(uint8_t l, const char* fmt, ...)
{
va_list args;
struct timeval t;

4
src/log.h
View File

@ -10,6 +10,6 @@
current level, but not when creating new log
messages. */
void rk6502_loglevel_set(uint8_t);
void rk6502_log(uint8_t, const char *, ...);
void rk65c02_loglevel_set(uint8_t);
void rk65c02_log(uint8_t, const char *, ...);

73
src/rk65c02.c
View File

@ -3,6 +3,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include <errno.h>
#include <assert.h>
#include <string.h>
@ -35,7 +36,7 @@ rk65c02_init(bus_t *b)
e.trace_head = NULL;
e.runtime_disassembly = false;
rk6502_log(LOG_DEBUG, "Initialized new emulator.");
rk65c02_log(LOG_DEBUG, "Initialized new emulator.");
return e;
}
@ -119,7 +120,7 @@ rk65c02_exec(rk65c02emu_t *e)
if (!instruction_modify_pc(&id))
program_counter_increment(e, &id);
} else {
rk6502_log(LOG_ERROR, "unimplemented opcode %X @ %X\n",
rk65c02_log(LOG_ERROR, "unimplemented opcode %X @ %X\n",
i.opcode, e->regs.PC);
e->state = STOPPED;
e->stopreason = EMUERROR;
@ -188,50 +189,42 @@ rk65c02_dump_stack(rk65c02emu_t *e, uint8_t n)
void
rk65c02_dump_regs(reg_state_t regs)
{
printf("A: %X X: %X Y: %X PC: %X SP: %X P: ",
regs.A, regs.X, regs.Y, regs.PC, regs.SP);
char *str;
if (regs.P & P_NEGATIVE)
printf("N");
else
printf("-");
str = rk65c02_regs_string_get(regs);
if (regs.P & P_SIGN_OVERFLOW)
printf("V");
else
printf("-");
printf ("%s", str);
if (regs.P & P_UNDEFINED)
printf("1");
else
printf("-");
free(str);
}
if (regs.P & P_BREAK)
printf("B");
else
printf("-");
char *
rk65c02_regs_string_get(reg_state_t regs)
{
#define REGS_STR_LEN 50
char *str;
if (regs.P & P_DECIMAL)
printf("D");
else
printf("-");
/* XXX: string allocation to a separate utility function? */
str = malloc(REGS_STR_LEN);
if (str == NULL) {
rk65c02_log(LOG_CRIT, "Error allocating memory for buffer: %s.",
strerror(errno));
return NULL;
}
memset(str, 0, REGS_STR_LEN);
if (regs.P & P_IRQ_DISABLE)
printf("I");
else
printf("-");
snprintf(str, REGS_STR_LEN, "A: %X X: %X Y: %X PC: %X SP: %X P: %c%c%c%c%c%c%c%c",
regs.A, regs.X, regs.Y, regs.PC, regs.SP,
(regs.P & P_NEGATIVE) ? 'N' : '-',
(regs.P & P_SIGN_OVERFLOW) ? 'V' : '-',
(regs.P & P_UNDEFINED) ? '1' : '-',
(regs.P & P_BREAK) ? 'B' : '-',
(regs.P & P_DECIMAL) ? 'D' : '-',
(regs.P & P_IRQ_DISABLE) ? 'I' : '-',
(regs.P & P_ZERO) ? 'Z' : '-',
(regs.P & P_CARRY) ? 'C' : '-');
if (regs.P & P_ZERO)
printf("Z");
else
printf("-");
if (regs.P & P_CARRY)
printf("C");
else
printf("-");
printf("\n");
return str;
}
/*
int
@ -252,7 +245,7 @@ main(void)
bus_write_1(&b, 8, 0x0);
bus_write_1(&b, 9, OP_STP);
rk6502_start(&b, 0);
rk65c02_start(&b, 0);
bus_finish(&b);
}

3
src/rk65c02.h
View File

@ -79,7 +79,8 @@ typedef struct rk65c02emu rk65c02emu_t;
rk65c02emu_t rk65c02_init(bus_t *);
void rk65c02_start(rk65c02emu_t *);
void rk65c02_step(rk65c02emu_t *, uint16_t);
void rk65c02_dump_regs(reg_state_t regs);
char *rk65c02_regs_string_get(reg_state_t);
void rk65c02_dump_regs(reg_state_t);
void rk65c02_dump_stack(rk65c02emu_t *, uint8_t);
void rk65c02_irq(rk65c02emu_t *e);

2
test/test_debug.c
View File

@ -55,7 +55,7 @@ ATF_TC_BODY(trace, tc)
trace_t *tr;
int i;
rk6502_loglevel_set(LOG_TRACE);
rk65c02_loglevel_set(LOG_TRACE);
b = bus_init_with_default_devs();
a = assemble_init(&b, ROM_LOAD_ADDR);