summaryrefslogtreecommitdiff
path: root/disasm.c
diff options
context:
space:
mode:
Diffstat (limited to 'disasm.c')
-rw-r--r--disasm.c73
1 files changed, 55 insertions, 18 deletions
diff --git a/disasm.c b/disasm.c
index 5ccede4..67a8945 100644
--- a/disasm.c
+++ b/disasm.c
@@ -6,21 +6,32 @@ void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode,
uint64_t address = operands[1];
uint64_t tmpaddr = operands[2];
char postfix[3];
+ char *of;
char op[4];
+ char sign;
+ uint8_t tmp = 0;
op[0] = opname[opcode][0];
op[1] = opname[opcode][1];
op[2] = opname[opcode][2];
op[3] = '\0';
- switch(1 << (prefix >> 4)) {
+ switch ((1 << ((prefix >> 4) & 3))) {
case 1: postfix[0] = 0; postfix[1] = 0; postfix[2] = 0; break;
case 2: postfix[0] = '.'; postfix[1] = 'W'; postfix[2] = 0; break;
case 4: postfix[0] = '.'; postfix[1] = 'D'; postfix[2] = 0; break;
case 8: postfix[0] = '.'; postfix[1] = 'Q'; postfix[2] = 0; break;
}
+ if (prefix >> 6) {
+ tmp = 0;
+ }
+ switch (prefix >> 6) {
+ default: of = ""; break;
+ case 1 : of = "SP, "; break;
+ case 2 : of = "PC, "; break;
+ }
switch (optype[opcode]) {
- case IMPL: wprintw(scr, "%s\r" , opname[opcode]); break;
+ case IMPL: wprintw(scr, "%s%s" , opname[opcode], postfix); break;
case IMM:
- switch(1 << (prefix >> 4)) {
+ switch ((1 << ((prefix >> 4) & 3))) {
case 1: wprintw(scr, "%s #$%02X\r" , op, value); break;
case 2: wprintw(scr, "%s%s #$%04X\r" , op, postfix, value); break;
case 4: wprintw(scr, "%s%s #$%08X\r" , op, postfix, value); break;
@@ -35,29 +46,49 @@ void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode,
case ZMY: tmpaddr = address - cpu->y; break;
}
switch ((prefix & 0x0C) >> 2) {
- case 3: wprintw(scr, "%s%s $%08X%s\r" , op, postfix, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
- case 2: wprintw(scr, "%s%s $%014"PRIX64"%s\r" , op, postfix, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
- case 1: wprintw(scr, "%s%s $%06X%s\r" , op, postfix, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
- case 0: wprintw(scr, "%s%s $%02X%s\r" , op, postfix, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
+ case 3: wprintw(scr, "%s%s %s$%08X%s\r" , op, postfix, of, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
+ case 2: wprintw(scr, "%s%s %s$%014"PRIX64"%s\r" , op, postfix, of, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
+ case 1: wprintw(scr, "%s%s %s$%06X%s\r" , op, postfix, of, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
+ case 0: wprintw(scr, "%s%s %s$%02X%s\r" , op, postfix, of, tmpaddr, (optype[opcode] == ZM) ? "" : ((optype[opcode] == ZMX) ? ", x" : ", y")); break;
}
break;
case IND:
case INDX:
case INDY:
switch ((prefix & 0x0C) >> 2) {
- case 3: wprintw(scr, "%s%s ($%08X%s\r" , op, postfix, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
- case 2: wprintw(scr, "%s%s ($%012"PRIX64"%s\r" , op, postfix, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
- case 1: wprintw(scr, "%s%s ($%06X%s\r" , op, postfix, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
- case 0: wprintw(scr, "%s%s ($%02X%s\r" , op, postfix, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
+ case 3: wprintw(scr, "%s%s (%s$%08X%s\r", op, postfix, of, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
+ case 2: wprintw(scr, "%s%s (%s$%012"PRIX64"%s\r", op, postfix, of, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
+ case 1: wprintw(scr, "%s%s (%s$%06X%s\r", op, postfix, of, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
+ case 0: wprintw(scr, "%s%s (%s$%02X%s\r", op, postfix, of, tmpaddr, (optype[opcode] == IND) ? ")" : ((optype[opcode] == INDX) ? ", x)" : "), y")); break;
}
break;
case ABS:
tmpaddr = address;
switch ((prefix & 0x0C) >> 2) {
- case 3: wprintw(scr, "%s%s $%016"PRIX64"\r" , op, postfix, tmpaddr); break;
- case 2: wprintw(scr, "%s%s $%014"PRIX64"\r" , op, postfix, tmpaddr); break;
- case 1: wprintw(scr, "%s%s $%010"PRIX64"\r" , op, postfix, tmpaddr); break;
- case 0: wprintw(scr, "%s%s $%04" PRIX64"\r" , op, postfix, tmpaddr); break;
+ case 3: wprintw(scr, "%s%s %s$%016"PRIX64"\r" , op, postfix, of, tmpaddr); break;
+ case 2: wprintw(scr, "%s%s %s$%014"PRIX64"\r" , op, postfix, of, tmpaddr); break;
+ case 1: wprintw(scr, "%s%s %s$%010"PRIX64"\r" , op, postfix, of, tmpaddr); break;
+ case 0: wprintw(scr, "%s%s %s$%04" PRIX64"\r" , op, postfix, of, tmpaddr); break;
+ }
+ break;
+ case REL:
+ switch((1 << ((prefix >> 4) & 3))) {
+ case 1:
+ sign = ((int8_t)value < 0) ? '-' : '+';
+ wprintw(scr, "%s %c$%02X" , op, sign, value & 0x7F);
+ break;
+ case 2:
+ sign = ((int16_t)value < 0) ? '-' : '+';
+ wprintw(scr, "%s%s %c$%04X" , op, postfix, sign, value & ~(1 << 15));
+ break;
+ case 4:
+ sign = ((int32_t)value < 0) ? '-' : '+';
+ wprintw(scr, "%s%s %c$%08X" , op, postfix, sign, value & ~(1 << 31));
+ break;
+ case 8:
+ sign = ((int64_t)value < 0) ? '-' : '+';
+ wprintw(scr, "%s%s %c$%016"PRIX64 , op, postfix, sign, value & ~((uint64_t)1 << 63));
+ break;
}
break;
}
@@ -74,7 +105,7 @@ void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode,
uint8_t iscursor = 0;
union reg ptr;
uint32_t adr;
- /*wmove(scr, 30, 0);
+ wmove(scr, 30, 0);
wclrtoeol(scr);
adr = 0x25;
ptr.u8[0] = addr[adr+0]; ptr.u8[1] = addr[adr+1];
@@ -99,10 +130,16 @@ void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode,
ptr.u8[2] = addr[adr+2]; ptr.u8[3] = addr[adr+3];
ptr.u8[4] = addr[adr+4]; ptr.u8[5] = addr[adr+5];
ptr.u8[6] = addr[adr+6]; ptr.u8[7] = addr[adr+7];
- wprintw(scr, ", idx0: $%04"PRIX64, ptr.u64);*/
+ wprintw(scr, ", idx0: $%04"PRIX64, ptr.u64);
+ adr = 0x334BA;
+ ptr.u8[0] = addr[adr+0]; ptr.u8[1] = addr[adr+1];
+ ptr.u8[2] = addr[adr+2]; ptr.u8[3] = addr[adr+3];
+ ptr.u8[4] = addr[adr+4]; ptr.u8[5] = addr[adr+5];
+ ptr.u8[6] = addr[adr+6]; ptr.u8[7] = addr[adr+7];
+ wprintw(scr, ", valbuf: $%016"PRIX64, ptr.u64);
if (address == CTRL_ADDR || addr[STEP_ADDR]) {
- mvwprintw(scr, 29, 0, "address: $%04"PRIX64", scr_row: %02u, scr_col: %02u, scr_str: %02u, scr_end: %02u\r", address, addr[0], addr[1], addr[0x22], addr[0x23]);
adr = 0x30000;
+ mvwprintw(scr, 29, 0, "address: $%04"PRIX64", scr_row: %02u, scr_col: %02u, scr_str: %02u, scr_end: %02u\r", address, addr[0], addr[1], addr[0x22], addr[0x23]);
wmove(scr, 32, 0);
wprintw(scr, "bitabl: ");
for (uint8_t i = 0; i < 16; i++) {
generated by cgit v1.2.3-13-gbd6f (git 2.30.0) at 2024-05-16 15:14:43 +0000