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Added more instructions for the parser to emit and refactored the code in doing so.

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glm94
2022-08-28 15:37:56 -05:00
parent c2111e2b88
commit 0d3f8a460e
5 changed files with 141 additions and 74 deletions
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src/disass.c
+33 -4
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@@ -32,15 +32,15 @@ void Disassemble(unsigned char image[HIGHMEMORY]) {
if (masked) {
IsRegisterPattern(instruction & 0x07, parameter1);
unsigned char parameter = instruction & 0x18;
unsigned char parameterType = instruction & 0x18;
if (!parameter) {
if (!parameterType) {
IsRegisterPattern(Image[position], parameter2);
} else if (parameter == CONSTMASK) {
} else if (parameterType == CONSTMASK) {
snprintf(parameter2, sizeof(char) * 31, "%d", Image[position + 1] + Image[position + 2]);
position += 3;
}
else if (parameter == ADDRESSMASK) {
else if (parameterType == ADDRESSMASK) {
snprintf(parameter2, sizeof(char) * 31, "[%#04X]", Image[position + 1] + Image[position + 2]);
position += 3;
}
@@ -66,6 +66,35 @@ void Disassemble(unsigned char image[HIGHMEMORY]) {
exit(1);
}
}
else {
int parameter = Image[position + 1] + Image[position + 2];
switch(instruction) {
case 0:
printf("NOP\n");
position++;
break;
case 1:
printf("JZ [%#04X]\n", parameter);
position += 3;
break;
case 2:
printf("INT %d\n", Image[position + 1] + Image[position + 2]);
position += 3;
break;
case 3:
printf("YLD\n");
position++;
break;
case 4:
printf("RET\n");
position++;
break;
default:
position++;
break;
}
}
instruction = Image[position];