summaryrefslogtreecommitdiff
path: root/disasm.c
diff options
context:
space:
mode:
Diffstat (limited to 'disasm.c')
-rw-r--r--disasm.c187
1 files changed, 117 insertions, 70 deletions
diff --git a/disasm.c b/disasm.c
index 67a8945..bbd8d2b 100644
--- a/disasm.c
+++ b/disasm.c
@@ -1,93 +1,138 @@
#include "sux.h"
#include "disasm.h"
+#include <string.h>
void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode, uint8_t prefix, uint8_t thread) {
uint64_t value = operands[0];
uint64_t address = operands[1];
uint64_t tmpaddr = operands[2];
- char postfix[3];
+ char *postfix;
char *of;
char op[4];
- char sign;
+ char *sign = "";
uint8_t tmp = 0;
- op[0] = opname[opcode][0];
- op[1] = opname[opcode][1];
- op[2] = opname[opcode][2];
- op[3] = '\0';
+ union reg mask;
+ mask.u64 = 0;
+ memcpy(op, opname[opcode], 3);
+ op[3] = 0;
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;
+ case 1: postfix = ""; break;
+ case 2: postfix = ".W"; break;
+ case 4: postfix = ".D"; break;
+ case 8: postfix = ".Q"; break;
}
if (prefix >> 6) {
tmp = 0;
}
switch (prefix >> 6) {
default: of = ""; break;
- case 1 : of = "SP, "; break;
- case 2 : of = "PC, "; break;
+ case 1 : of = "SP"; break;
+ case 2 : of = "PC"; break;
}
+ uint8_t addrsize = 0xFF;
+ char *idx;
+ switch (optype[opcode]) {
+ case IND : idx = ")"; break;
+ case INDX: idx = ", x)"; break;
+ case INDY: idx = "), y"; break;
+ case ZMX : idx = ", x"; break;
+ case ZMY : idx = ", y"; break;
+ default : idx = ""; break;
+ }
+ if ((prefix >> 6) == 1 || (prefix >> 6) == 2) {
+ switch (optype[opcode]) {
+ case ZM :
+ case ZMX :
+ case ZMY :
+ case IND :
+ case INDX:
+ case INDY: addrsize = get_addrsize(prefix, ZM); break;
+ case ABS : addrsize = get_addrsize(prefix, ABS); break;
+ }
+ for (uint8_t i = 0; i < addrsize+1; i++) {
+ mask.u8[i] = (i == addrsize && addrsize != 0xFF) ? 0x7F : 0xFF;
+ }
+ switch (addrsize) {
+ case 0 : sign = ((int8_t )value < 0) ? "-" : "+"; break;
+ case 1 : sign = ((int16_t)value < 0) ? "-" : "+"; break;
+ case 2 :
+ case 3 : sign = ((int32_t)value < 0) ? "-" : "+"; break;
+ case 4 :
+ case 5 :
+ case 6 :
+ case 7 : sign = ((int64_t)value < 0) ? "-" : "+"; break;
+ }
+ }
+
switch (optype[opcode]) {
case IMPL: wprintw(scr, "%s%s" , opname[opcode], postfix); break;
case IMM:
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 #$%08X\r" , op, postfix, value); break;
- case 8: wprintw(scr, "%s%s #$%016"PRIX64"\r" , op, postfix, value); break;
+ case 1: wprintw(scr, "%s #$%02X" , op, value); break;
+ case 2: wprintw(scr, "%s%s #$%04X" , op, postfix, value); break;
+ case 4: wprintw(scr, "%s%s #$%08X" , op, postfix, value); break;
+ case 8: wprintw(scr, "%s%s #$%016"PRIX64 , op, postfix, value); break;
}
break;
case ZM:
case ZMX:
case ZMY:
+ if ((prefix >> 6) == 1 || (prefix >> 6) == 2) {
+ tmpaddr &= mask.u64;
+ }
switch (optype[opcode]) {
case ZMX: tmpaddr = address - cpu->x; break;
case ZMY: tmpaddr = address - cpu->y; break;
}
switch ((prefix & 0x0C) >> 2) {
- 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;
+ case 3: wprintw(scr, "%s%s %s%s$%08" PRIX64"%s" , op, postfix, of, sign, tmpaddr, idx); break;
+ case 2: wprintw(scr, "%s%s %s%s$%014"PRIX64"%s" , op, postfix, of, sign, tmpaddr, idx); break;
+ case 1: wprintw(scr, "%s%s %s%s$%06" PRIX64"%s" , op, postfix, of, sign, tmpaddr, idx); break;
+ case 0: wprintw(scr, "%s%s %s%s$%02" PRIX64"%s" , op, postfix, of, sign, tmpaddr, idx); break;
}
break;
case IND:
case INDX:
case INDY:
+ if ((prefix >> 6) == 1 || (prefix >> 6) == 2) {
+ tmpaddr &= mask.u64;
+ }
switch ((prefix & 0x0C) >> 2) {
- 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;
+ case 3: wprintw(scr, "%s%s (%s%s$%08" PRIX64"%s", op, postfix, of, sign, tmpaddr, idx); break;
+ case 2: wprintw(scr, "%s%s (%s%s$%014"PRIX64"%s", op, postfix, of, sign, tmpaddr, idx); break;
+ case 1: wprintw(scr, "%s%s (%s%s$%06" PRIX64"%s", op, postfix, of, sign, tmpaddr, idx); break;
+ case 0: wprintw(scr, "%s%s (%s%s$%02" PRIX64"%s", op, postfix, of, sign, tmpaddr, idx); break;
}
break;
case ABS:
tmpaddr = address;
+ if ((prefix >> 6) == 1 || (prefix >> 6) == 2) {
+ tmpaddr &= mask.u64;
+ }
switch ((prefix & 0x0C) >> 2) {
- 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;
+ case 3: wprintw(scr, "%s%s %s%s$%016"PRIX64 , op, postfix, of, sign, tmpaddr); break;
+ case 2: wprintw(scr, "%s%s %s%s$%014"PRIX64 , op, postfix, of, sign, tmpaddr); break;
+ case 1: wprintw(scr, "%s%s %s%s$%010"PRIX64 , op, postfix, of, sign, tmpaddr); break;
+ case 0: wprintw(scr, "%s%s %s%s$%04" PRIX64 , op, postfix, of, sign, tmpaddr); break;
}
break;
case REL:
switch((1 << ((prefix >> 4) & 3))) {
case 1:
- sign = ((int8_t)value < 0) ? '-' : '+';
- wprintw(scr, "%s %c$%02X" , op, sign, value & 0x7F);
+ sign = ((int8_t)value < 0) ? "-" : "+";
+ wprintw(scr, "%s %s$%02X" , op, sign, value & 0x7F);
break;
case 2:
- sign = ((int16_t)value < 0) ? '-' : '+';
- wprintw(scr, "%s%s %c$%04X" , op, postfix, sign, value & ~(1 << 15));
+ sign = ((int16_t)value < 0) ? "-" : "+";
+ wprintw(scr, "%s%s %s$%04X" , op, postfix, sign, value & ~(1 << 15));
break;
case 4:
- sign = ((int32_t)value < 0) ? '-' : '+';
- wprintw(scr, "%s%s %c$%08X" , op, postfix, sign, value & ~(1 << 31));
+ sign = ((int32_t)value < 0) ? "-" : "+";
+ wprintw(scr, "%s%s %s$%08X" , op, postfix, sign, value & ~(1 << 31));
break;
case 8:
- sign = ((int64_t)value < 0) ? '-' : '+';
- wprintw(scr, "%s%s %c$%016"PRIX64 , op, postfix, sign, value & ~((uint64_t)1 << 63));
+ sign = ((int64_t)value < 0) ? "-" : "+";
+ wprintw(scr, "%s%s %s$%016"PRIX64 , op, postfix, sign, value & ~((uint64_t)1 << 63));
break;
}
break;
@@ -97,6 +142,8 @@ void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode,
wmove(scr, 27, 0);
wprintw(scr, "TX_ADDR: $%02X, RX_ADDR: $%02X", addr[TX_ADDR], addr[RX_ADDR]);
}
+ wmove(scr, 29, 0);
+ wprintw(scr, "address: $%04"PRIX64, address);
if (subdbg) {
uint8_t ln = 33;
uint16_t line_idx = 0;
@@ -105,41 +152,9 @@ 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);
- wclrtoeol(scr);
- adr = 0x25;
- 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, "ptr1: $%04"PRIX64, ptr.u64);
- adr = 0x2D;
- 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, ", ptr2: $%04"PRIX64, ptr.u64);
- adr = 0x35;
- 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, ", ptr3: $%04"PRIX64, ptr.u64);
- adr = 0x3349A;
- 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, ", 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]) {
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]);
+ wprintw(scr, ", scr_row: %02u, scr_col: %02u, scr_str: %02u, scr_end: %02u", addr[0], addr[1], addr[0x22], addr[0x23]);
wmove(scr, 32, 0);
wprintw(scr, "bitabl: ");
for (uint8_t i = 0; i < 16; i++) {
@@ -159,7 +174,7 @@ void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode,
wmove(scr, ln++, 0);
wclrtoeol(scr);
wmove(scr, row+1, col-2);
- wprintw(scr, "/\\\r");
+ wprintw(scr, "/\\");
wmove(scr, row, col);
}
}
@@ -172,6 +187,38 @@ void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t opcode,
wmove(scr, ln++, 0);
}
}
+ wmove(scr, 30, 0);
+ wclrtoeol(scr);
+ adr = 0x25;
+ 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, "ptr1: $%04"PRIX64, ptr.u64);
+ adr = 0x2D;
+ 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, ", ptr2: $%04"PRIX64, ptr.u64);
+ adr = 0x35;
+ 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, ", ptr3: $%04"PRIX64, ptr.u64);
+ adr = 0x3349A;
+ 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, ", 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);
/*
wmove(scr, 47, 0);
wclrtoeol(scr);
generated by cgit v1.2.3-13-gbd6f (git 2.30.0) at 2024-12-26 06:48:46 +0000