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show bytes in disassembly

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Jorj Bauer 2021-01-11 08:43:23 -05:00
parent 12d4f7bdf2
commit 579e7e9f79
1 changed files with 7 additions and 1 deletions
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8
nix/disassembler.cpp
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@ -133,6 +133,7 @@ uint8_t Disassembler::instructionToMnemonic(uint16_t addr, uint8_t *p, char *out
addrmode amode = opcodes[*p].mode; addrmode amode = opcodes[*p].mode;
uint16_t target = 0; uint16_t target = 0;
char arg[40] = "\0"; char arg[40] = "\0";
char bytes[10] = "\0";
switch (amode) { switch (amode) {
case A_REL: case A_REL:
@ -153,14 +154,19 @@ uint8_t Disassembler::instructionToMnemonic(uint16_t addr, uint8_t *p, char *out
switch (instructionBytes(*p)) { switch (instructionBytes(*p)) {
case 1: case 1:
// no arguments // no arguments
sprintf(bytes, " %.2X ", *(uint8_t *)p);
break; break;
case 2: case 2:
sprintf(arg, "%s$%X%s", om.prefix, target, om.suffix);
sprintf(bytes, " %.2X %.2X ", *(uint8_t *)p, *(uint8_t *)(p+1));
break;
case 3: case 3:
sprintf(arg, "%s$%X%s", om.prefix, target, om.suffix); sprintf(arg, "%s$%X%s", om.prefix, target, om.suffix);
sprintf(bytes, "%.2X %.2X %.2X ", *(uint8_t *)p, *(uint8_t *)(p+1), *(uint8_t *)(p+2));
break; break;
} }
sprintf(outp, "$%.4X %s %s", addr, mn, arg); sprintf(outp, "$%.4X %s %s %s", addr, bytes, mn, arg);
return instructionBytes(*p); return instructionBytes(*p);
} }