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Updated uxnasm to create symbols

This commit is contained in:
neauoire 2022-12-09 19:54:04 -08:00
parent bce4438469
commit 7edbaa0a87
1 changed files with 57 additions and 16 deletions
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73
src/uxnasm.c
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@ -303,22 +303,31 @@ parse(char *w, FILE *f)
if(!writeshort(shex(w + 1), 1)) return 0;
}
break;
case '.': /* literal byte zero-page */
case '_': /* raw byte relative */
makereference(p.scope, w, p.ptr);
if(!writelitbyte(0xff)) return 0;
if(!writebyte(0xff)) return 0;
break;
case ',': /* literal byte relative */
makereference(p.scope, w, p.ptr);
if(!writelitbyte(0xff)) return 0;
break;
case '-': /* raw byte absolute */
makereference(p.scope, w, p.ptr);
if(!writebyte(0xff)) return 0;
break;
case '.': /* literal byte zero-page */
makereference(p.scope, w, p.ptr);
if(!writelitbyte(0xff)) return 0;
break;
case ':': /* raw short absolute */
case '=':
makereference(p.scope, w, p.ptr);
if(!writeshort(0xffff, 0)) return 0;
break;
case ';': /* literal short absolute */
makereference(p.scope, w, p.ptr);
if(!writeshort(0xffff, 1)) return 0;
break;
case ':': /* raw short absolute */
makereference(p.scope, w, p.ptr);
if(!writeshort(0xffff, 0)) return 0;
break;
case '"': /* raw string */
i = 0;
while((c = w[++i]))
@ -360,10 +369,12 @@ resolve(void)
for(i = 0; i < p.rlen; i++) {
Reference *r = &p.refs[i];
switch(r->rune) {
case '.':
case '_':
if(!(l = findlabel(r->name)))
return error("Unknown zero-page reference", r->name);
p.data[r->addr + 1] = l->addr & 0xff;
return error("Unknown relative reference", r->name);
p.data[r->addr] = (Sint8)(l->addr - r->addr - 2);
if((Sint8)p.data[r->addr] != (l->addr - r->addr - 2))
return error("Relative reference is too far", r->name);
l->refs++;
break;
case ',':
@ -374,6 +385,26 @@ resolve(void)
return error("Relative reference is too far", r->name);
l->refs++;
break;
case '-':
if(!(l = findlabel(r->name)))
return error("Unknown absolute reference", r->name);
p.data[r->addr] = l->addr & 0xff;
l->refs++;
break;
case '.':
if(!(l = findlabel(r->name)))
return error("Unknown zero-page reference", r->name);
p.data[r->addr + 1] = l->addr & 0xff;
l->refs++;
break;
case ':':
case '=':
if(!(l = findlabel(r->name)))
return error("Unknown absolute reference", r->name);
p.data[r->addr] = l->addr >> 0x8;
p.data[r->addr + 1] = l->addr & 0xff;
l->refs++;
break;
case ';':
if(!(l = findlabel(r->name)))
return error("Unknown absolute reference", r->name);
@ -381,13 +412,6 @@ resolve(void)
p.data[r->addr + 2] = l->addr & 0xff;
l->refs++;
break;
case ':':
if(!(l = findlabel(r->name)))
return error("Unknown absolute reference", r->name);
p.data[r->addr + 0] = l->addr >> 0x8;
p.data[r->addr + 1] = l->addr & 0xff;
l->refs++;
break;
default:
return error("Unknown reference", r->name);
}
@ -424,6 +448,22 @@ review(char *filename)
p.mlen);
}
static void
writesym(char *filename)
{
char symdst[0x40];
FILE *fp = fopen(scat(scpy(filename, symdst, slen(filename) + 1), ".sym"), "w");
int i;
if(fp != NULL) {
for(i = 0; i < p.llen; i++) {
fwrite(&p.labels[i].addr + 1, 1, 1, fp);
fwrite(&p.labels[i].addr, 1, 1, fp);
fwrite(p.labels[i].name, slen(p.labels[i].name) + 1, 1, fp);
}
}
fclose(fp);
}
int
main(int argc, char *argv[])
{
@ -440,5 +480,6 @@ main(int argc, char *argv[])
return !error("Assembly", "Output rom is empty.");
fwrite(p.data + TRIM, p.length - TRIM, 1, dst);
review(argv[2]);
writesym(argv[2]);
return 0;
}