6809: eliminate usage of log0

Change-Id: Iddf14f72e9e848703aba07208708b55968d100af
This commit is contained in:
David Banks 2019-11-12 11:50:49 +00:00
parent ec53c9d54f
commit 15c212f4b6
4 changed files with 314 additions and 277 deletions

View File

@ -18,24 +18,6 @@
#include <avr/pgmspace.h>
#include "AtomBusMon.h"
unsigned char get_memb(unsigned int addr) {
loadAddr(addr);
return readMemByteInc();
}
#include <stdio.h>
typedef unsigned char tt_u8;
typedef signed char tt_s8;
typedef unsigned short tt_u16;
typedef signed short tt_s16;
unsigned int get_memw(unsigned int addr) {
loadAddr(addr);
return (readMemByteInc() << 8) + readMemByteInc();
}
enum opcodes {
OP_UU ,
OP_XX ,
@ -312,15 +294,15 @@ TSTB";
// The first byte is the opcode index
// The second byte is <length><mode>
// modes:
// 1 immediate
// 2 direct
// 3 indexed
// 4 extended
// 5 inherent
// 6 relative
// modes:
// 1 immediate
// 2 direct
// 3 indexed
// 4 extended
// 5 inherent
// 6 relative
static const unsigned char map0[] PROGMEM = {
static const uint8_t map0[] PROGMEM = {
OP_NEG , 0x22,
OP_XX , 0x22,
OP_XX , 0x12,
@ -579,142 +561,110 @@ static const unsigned char map0[] PROGMEM = {
OP_STU , 0x34,
};
static const unsigned char map1[] PROGMEM = {
33, OP_LBRN, 0x46,
34, OP_LBHI, 0x46,
35, OP_LBLS, 0x46,
36, OP_LBCC, 0x46,
37, OP_LBLO, 0x46,
38, OP_LBNE, 0x46,
39, OP_LBEQ, 0x46,
40, OP_LBVC, 0x46,
41, OP_LBVS, 0x46,
42, OP_LBPL, 0x46,
43, OP_LBMI, 0x46,
44, OP_LBGE, 0x46,
45, OP_LBLT, 0x46,
46, OP_LBGT, 0x46,
47, OP_LBLE, 0x46,
63, OP_SWI2, 0x25,
131, OP_CMPD, 0x41,
140, OP_CMPY, 0x41,
142, OP_LDY , 0x41,
147, OP_CMPD, 0x32,
156, OP_CMPY, 0x32,
158, OP_LDY , 0x32,
159, OP_STY , 0x32,
163, OP_CMPD, 0x33,
172, OP_CMPY, 0x33,
174, OP_LDY , 0x33,
175, OP_STY , 0x33,
179, OP_CMPD, 0x44,
188, OP_CMPY, 0x44,
190, OP_LDY , 0x44,
191, OP_STY , 0x44,
206, OP_LDS , 0x41,
222, OP_LDS , 0x32,
223, OP_STS , 0x32,
238, OP_LDS , 0x33,
239, OP_STS , 0x33,
254, OP_LDS , 0x44,
255, OP_STS , 0x44,
static const uint8_t map1[] PROGMEM = {
33, OP_LBRN, 0x46,
34, OP_LBHI, 0x46,
35, OP_LBLS, 0x46,
36, OP_LBCC, 0x46,
37, OP_LBLO, 0x46,
38, OP_LBNE, 0x46,
39, OP_LBEQ, 0x46,
40, OP_LBVC, 0x46,
41, OP_LBVS, 0x46,
42, OP_LBPL, 0x46,
43, OP_LBMI, 0x46,
44, OP_LBGE, 0x46,
45, OP_LBLT, 0x46,
46, OP_LBGT, 0x46,
47, OP_LBLE, 0x46,
63, OP_SWI2, 0x25,
131, OP_CMPD, 0x41,
140, OP_CMPY, 0x41,
142, OP_LDY , 0x41,
147, OP_CMPD, 0x32,
156, OP_CMPY, 0x32,
158, OP_LDY , 0x32,
159, OP_STY , 0x32,
163, OP_CMPD, 0x33,
172, OP_CMPY, 0x33,
174, OP_LDY , 0x33,
175, OP_STY , 0x33,
179, OP_CMPD, 0x44,
188, OP_CMPY, 0x44,
190, OP_LDY , 0x44,
191, OP_STY , 0x44,
206, OP_LDS , 0x41,
222, OP_LDS , 0x32,
223, OP_STS , 0x32,
238, OP_LDS , 0x33,
239, OP_STS , 0x33,
254, OP_LDS , 0x44,
255, OP_STS , 0x44,
};
static const unsigned char map2[] PROGMEM = {
63, OP_SWI3, 0x25,
131, OP_CMPU, 0x41,
140, OP_CMPS, 0x41,
147, OP_CMPU, 0x32,
156, OP_CMPS, 0x32,
163, OP_CMPU, 0x33,
172, OP_CMPS, 0x33,
179, OP_CMPU, 0x44,
188, OP_CMPS, 0x44,
static const uint8_t map2[] PROGMEM = {
63, OP_SWI3, 0x25,
131, OP_CMPU, 0x41,
140, OP_CMPS, 0x41,
147, OP_CMPU, 0x32,
156, OP_CMPS, 0x32,
163, OP_CMPU, 0x33,
172, OP_CMPS, 0x33,
179, OP_CMPU, 0x44,
188, OP_CMPS, 0x44,
255, OP_XX , 0x10
};
static const char regi[] = { 'X', 'Y', 'U', 'S' };
static const char *exgi[] = { "D", "X", "Y", "U", "S", "PC", "??", "??", "A",
"B", "CC", "DP", "??", "??", "??", "??" };
"B", "CC", "DP", "??", "??", "??", "??" };
static const char *pshsregi[] = { "PC", "U", "Y", "X", "DP", "B", "A", "CC" };
static const char *pshuregi[] = { "PC", "S", "Y", "X", "DP", "B", "A", "CC" };
/* disassemble one instruction at adress adr and return its size */
extern const char statusString[];
char hexdigit(tt_u16 v)
{
v &= 0xf;
if (v <= 9)
return '0' + v;
else
return 'A' - 10 + v;
static uint8_t get_memb(addr_t addr) {
loadAddr(addr);
return readMemByteInc();
}
char *hex8str(tt_u8 v)
{
static char tmpbuf[3] = " ";
tmpbuf[1] = hexdigit(v);
tmpbuf[0] = hexdigit(v >> 4);
return tmpbuf;
static uint16_t get_memw(addr_t addr) {
loadAddr(addr);
return (readMemByteInc() << 8) + readMemByteInc();
}
char *hex16str(tt_u16 v)
{
static char tmpbuf[5] = " ";
tmpbuf[3] = hexdigit(v);
v >>= 4;
tmpbuf[2] = hexdigit(v);
v >>= 4;
tmpbuf[1] = hexdigit(v);
v >>= 4;
tmpbuf[0] = hexdigit(v);
return tmpbuf;
}
extern char *statusString;
char *ccstr(tt_u8 val)
{
static char tempbuf[9] = " ";
int i;
static char *strcc(char *ptr, uint8_t val) {
uint8_t i;
for (i = 0; i < 8; i++) {
if (val & 0x80)
tempbuf[i] = statusString[i];
else
tempbuf[i] = '.';
*ptr++ = (val & 0x80) ? statusString[i] : '.';
val <<= 1;
}
return tempbuf;
return ptr;
}
unsigned int disassemble(unsigned int addr)
{
int d = get_memb(addr);
int s, i;
tt_u8 pb;
/* disassemble one instruction at address addr and return the address of the next instruction */
addr_t disassemble(addr_t addr) {
uint8_t d = get_memb(addr);
uint8_t s;
int8_t i;
uint8_t pb;
char reg;
const unsigned char *map = NULL;
char *ptr;
static char buffer[64];
const uint8_t *map = NULL;
// Default for most undefined opcodes
unsigned char sm = 0x10; // size_mode byte
unsigned char oi = OP_XX; // opcode index
FILE *stream = &ser0stream;
if (d == 0x10) {
d = get_memb(addr + 1);
d = get_memb(addr + 1);
map = map1;
}
if (d == 0x11) {
} else if (d == 0x11) {
d = get_memb(addr + 1);
map = map2;
}
@ -724,12 +674,13 @@ unsigned int disassemble(unsigned int addr)
map -= 3;
do {
map += 3;
if (pgm_read_byte(map) == d) {
oi = pgm_read_byte(++map);
sm = pgm_read_byte(++map);
break;
s = pgm_read_byte(map);
if (s == d) {
oi = pgm_read_byte(++map);
sm = pgm_read_byte(++map);
break;
}
} while (*map < 255);
} while (s < 255);
} else {
// Lookup directly in map0
map = map0 + 2 * d;
@ -739,187 +690,258 @@ unsigned int disassemble(unsigned int addr)
s = sm >> 4;
fprintf(stream, "%04X ", addr);
// 0123456789012345678901234567890123456789
// AAAA : HH HH HH HH : OOOO AAAAAAAAA
strfill(buffer, ' ', sizeof(buffer));
buffer[5] = ':';
buffer[19] = ':';
// Address
strhex4(buffer, addr);
// Hex
ptr = buffer + 7;
for (i = 0; i < s; i++) {
fputs(hex8str(get_memb(addr + i)), stream);
fputc(' ', stream);
}
for (i = s; i < 4; i++) {
fputs(" ", stream);
strhex2(ptr, get_memb(addr + i));
ptr += 3;
}
const char *ip = inst + oi * 4;
for (i = 0; i < 4; i++)
fputc(pgm_read_byte(ip++), stream);
// Opcode
ptr = buffer + 21;
const char *ip = inst + oi * 4;
for (i = 0; i < 4; i++) {
*ptr++ = pgm_read_byte(ip++);
}
ptr++;
fputs(" ", stream);
switch(sm & 15) {
case 1: /* immediate */
fputs("#$", stream);
if (s == 2)
fputs(hex8str(get_memb(addr + 1)), stream);
else
fputs(hex16str(get_memw(addr + s - 2)), stream);
*ptr++ = '#';
*ptr++ = '$';
if (s == 2) {
ptr = strhex2(ptr, get_memb(addr + 1));
} else {
ptr = strhex4(ptr, get_memw(addr + s - 2));
}
break;
case 2: /* direct */
fputs("$", stream);
fputs(hex8str(get_memb(addr + s - 1)), stream);
*ptr++ = '$';
ptr = strhex2(ptr, get_memb(addr + s - 1));
break;
case 3: /* indexed */
pb = get_memb(addr + s - 1);
reg = regi[(pb >> 5) & 0x03];
if (!(pb & 0x80)) { /* n4,R */
if (pb & 0x10)
fprintf(stream, "-$%s,%c", hex8str(((pb & 0x0f) ^ 0x0f) + 1), reg);
else
fprintf(stream, "$%s,%c", hex8str(pb & 0x0f), reg);
}
else {
if (pb & 0x10)
fputc('[', stream);
if (pb & 0x10) {
*ptr++ = '-';
*ptr++ = '$';
ptr = strhex2(ptr, ((pb & 0x0f) ^ 0x0f) + 1);
} else {
*ptr++ = '$';
ptr = strhex2(ptr, pb & 0x0f);
}
*ptr++ = ',';
*ptr++ = reg;
} else {
if (pb & 0x10) {
*ptr++ = '[';
}
switch (pb & 0x0f) {
case 0: /* ,R+ */
fprintf(stream, ",%c+", reg);
break;
*ptr++ = ',';
*ptr++ = reg;
*ptr++ = '+';
break;
case 1: /* ,R++ */
fprintf(stream, ",%c++", reg);
break;
*ptr++ = ',';
*ptr++ = reg;
*ptr++ = '+';
*ptr++ = '+';
break;
case 2: /* ,-R */
fprintf(stream, ",-%c", reg);
break;
*ptr++ = ',';
*ptr++ = '-';
*ptr++ = reg;
break;
case 3: /* ,--R */
fprintf(stream, ",--%c", reg);
break;
*ptr++ = ',';
*ptr++ = '-';
*ptr++ = '-';
*ptr++ = reg;
break;
case 4: /* ,R */
fprintf(stream, ",%c", reg);
break;
*ptr++ = ',';
*ptr++ = reg;
break;
case 5: /* B,R */
fprintf(stream, "B,%c", reg);
break;
*ptr++ = 'B';
*ptr++ = ',';
*ptr++ = reg;
break;
case 6: /* A,R */
fprintf(stream, "A,%c", reg);
break;
*ptr++ = 'A';
*ptr++ = ',';
*ptr++ = reg;
break;
case 8: /* n7,R */
s += 1;
fprintf(stream, "$%s,%c", hex8str(get_memb(addr + s - 1)), reg);
break;
s += 1;
*ptr++ = '$';
ptr = strhex2(ptr, get_memb(addr + s - 1));
*ptr++ = ',';
*ptr++ = reg;
break;
case 9: /* n15,R */
s += 2;
fprintf(stream, "$%s,%c", hex16str(get_memw(addr + s - 2)), reg);
break;
s += 2;
*ptr++ = '$';
ptr = strhex4(ptr, get_memw(addr + s - 2));
*ptr++ = ',';
*ptr++ = reg;
break;
case 11: /* D,R */
fprintf(stream, "D,%c", reg);
break;
*ptr++ = 'D';
*ptr++ = ',';
*ptr++ = reg;
break;
case 12: /* n7,PCR */
s += 1;
fprintf(stream, "$%s,PCR", hex8str(get_memb(addr + s - 1)));
break;
s += 1;
*ptr++ = '$';
ptr = strhex2(ptr, get_memb(addr + s - 1));
*ptr++ = ',';
*ptr++ = 'P';
*ptr++ = 'C';
*ptr++ = 'R';
break;
case 13: /* n15,PCR */
s += 2;
fprintf(stream, "$%s,PCR", hex16str(get_memw(addr + s - 2)));
break;
s += 2;
*ptr++ = '$';
ptr = strhex4(ptr, get_memw(addr + s - 2));
*ptr++ = ',';
*ptr++ = 'P';
*ptr++ = 'C';
*ptr++ = 'R';
break;
case 15: /* [n] */
s += 2;
fprintf(stream, "$%s", hex16str(get_memw(addr + s - 2)));
break;
s += 2;
*ptr++ = '$';
ptr = strhex4(ptr, get_memw(addr + s - 2));
break;
default:
fputs("??", stream);
break; }
if (pb & 0x10)
fputc(']', stream);
*ptr++ = '?';
*ptr++ = '?';
break;
}
if (pb & 0x10) {
*ptr++ = ']';
}
}
break;
case 4: /* extended */
fprintf(stream, "$%s", hex16str(get_memw(addr + s - 2)));
*ptr++ = '$';
ptr = strhex4(ptr, get_memw(addr + s - 2));
break;
case 5: /* inherent */
pb = get_memb(addr + 1);
switch (d) {
case 0x1e: case 0x1f: /* exg tfr */
fprintf(stream, "%s,%s", exgi[(pb >> 4) & 0x0f], exgi[pb & 0x0f]);
break;
ptr = strinsert(ptr, exgi[(pb >> 4) & 0x0f]);
*ptr++ = ',';
ptr = strinsert(ptr, exgi[pb & 0x0f]);
break;
case 0x1a: case 0x1c: case 0x3c: /* orcc andcc cwai */
fprintf(stream, "#$%s=%s", hex8str(pb), ccstr(pb));
*ptr++ = '#';
*ptr++ = '$';
ptr = strhex2(ptr, pb);
*ptr++ = '=';
ptr = strcc(ptr, pb);
break;
case 0x34: /* pshs */
{
int p = 0;
for (i = 0; i < 8; i++) {
if (pb & 0x80) {
if (p)
fputc(',', stream);
fputs(pshsregi[i], stream);
p = 1;
}
pb <<= 1;
}
int p = 0;
for (i = 0; i < 8; i++) {
if (pb & 0x80) {
if (p) {
*ptr++ = ',';
}
ptr = strinsert(ptr, pshsregi[i]);
p = 1;
}
pb <<= 1;
}
}
break;
case 0x35: /* puls */
{
int p = 0;
for (i = 7; i >= 0; i--) {
if (pb & 0x01) {
if (p)
fputc(',', stream);
fputs(pshsregi[i], stream);
p = 1;
}
pb >>= 1;
}
int p = 0;
for (i = 7; i >= 0; i--) {
if (pb & 0x01) {
if (p) {
*ptr++ = ',';
}
ptr = strinsert(ptr, pshsregi[i]);
p = 1;
}
pb >>= 1;
}
}
break;
case 0x36: /* pshu */
{
int p = 0;
for (i = 0; i < 8; i++) {
if (pb & 0x80) {
if (p)
fputc(',', stream);
fputs(pshuregi[i], stream);
p = 1;
}
pb <<= 1;
}
int p = 0;
for (i = 0; i < 8; i++) {
if (pb & 0x80) {
if (p) {
*ptr++ = ',';
}
ptr = strinsert(ptr, pshuregi[i]);
p = 1;
}
pb <<= 1;
}
}
break;
case 0x37: /* pulu */
{
int p = 0;
for (i = 7; i >= 0; i--) {
if (pb & 0x01) {
if (p)
fputc(',', stream);
fputs(pshuregi[i], stream);
p = 1;
}
pb >>= 1;
}
int p = 0;
for (i = 7; i >= 0; i--) {
if (pb & 0x01) {
if (p) {
*ptr++ = ',';
}
ptr = strinsert(ptr, pshuregi[i]);
p = 1;
}
pb >>= 1;
}
}
break;
}
break;
break;
case 6: /* relative */
{
tt_s16 v;
if (s == 2)
v = (tt_s16)(tt_s8)get_memb(addr + 1);
else
v = (tt_s16)get_memw(addr + s - 2);
fprintf(stream, "$%s", hex16str(addr + (tt_u16)s + v));
break;
}
int16_t v;
if (s == 2) {
v = (int16_t)(int8_t)get_memb(addr + 1);
} else {
v = (int16_t)get_memw(addr + s - 2);
}
*ptr++ = '$';
ptr = strhex4(ptr, addr + (uint16_t)s + v);
}
break;
}
fputc('\n', stream);
// Get rid of trailing white space
while (*(--ptr) == ' ');
ptr++;
// Add a newline and terminate the string
*ptr++ = '\n';
*ptr++ = '\0';
// Log using the normal (data memory) string logger
logs(buffer);
// Return the address of the next instruction
return addr + s;
}

View File

@ -10,28 +10,35 @@
#define OFFSET_REG_D 44
#define OFFSET_REG_CC 45
char statusString[8] = "EFHINZVC";
const char statusString[8] = "EFHINZVC";
void doCmdRegs(char *params) {
int i;
unsigned int p = hwRead8(OFFSET_REG_CC);
log0("6809 Registers:\n A=%02X B=%02X X=%04X Y=%04X\n",
hwRead8(OFFSET_REG_A),
hwRead8(OFFSET_REG_B),
hwRead16(OFFSET_REG_X),
hwRead16(OFFSET_REG_Y));
log0(" CC=%02X D=%02X U=%04X S=%04X PC=%04X\n",
p,
hwRead8(OFFSET_REG_D),
hwRead16(OFFSET_REG_U),
hwRead16(OFFSET_REG_S),
hwRead16(OFFSET_REG_PC));
char *sp = statusString;
log0(" Status: ");
uint16_t i;
uint8_t p = hwRead8(OFFSET_REG_CC);
const char *sp = statusString;
logstr("6809 Registers:\n A=");
loghex2(hwRead8(OFFSET_REG_A));
logstr(" B=");
loghex2(hwRead8(OFFSET_REG_B));
logstr(" X=");
loghex4(hwRead16(OFFSET_REG_X));
logstr(" Y=");
loghex4(hwRead16(OFFSET_REG_Y));
logstr("\n CC=");
loghex2(p);
logstr(" D=");
loghex2(hwRead8(OFFSET_REG_D));
logstr(" U=");
loghex4(hwRead16(OFFSET_REG_U));
logstr(" S=");
loghex4(hwRead16(OFFSET_REG_S));
logstr(" PC=");
loghex4(hwRead16(OFFSET_REG_PC));
logstr("\n Status: ");
for (i = 0; i <= 7; i++) {
log0("%c", ((p & 128) ? (*sp) : '-'));
logc(((p & 128) ? (*sp) : '-'));
p <<= 1;
sp++;
}
log0("\n");
logc('\n');
}

View File

@ -195,3 +195,10 @@ char *strint(char *buffer, int i) {
char *strlong(char *buffer, long i) {
return ltoa(i, buffer, 10);
}
char *strinsert(char *buffer, const char *s) {
while (*s) {
*buffer++ = *s++;
}
return buffer;
}

View File

@ -42,6 +42,7 @@ char *strhex2(char *buffer, uint8_t i);
char *strhex4(char *buffer, uint16_t i);
char *strint(char *buffer, int i);
char *strlong(char *buffer, long i);
char *strinsert(char *buffer, const char *s);
#define log0(format,...) fprintf_P(&ser0stream,PSTR(format),##__VA_ARGS__)