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Completed struct implementation

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This commit is contained in:
neauoire 2021-02-23 12:04:59 -08:00
parent 15bb0ea9c5
commit 15bab0f74a
2 changed files with 43 additions and 34 deletions
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62
assembler.c
View file

@ -91,45 +91,49 @@ findmacro(char *s)
}
Label *
findlabelplain(char *s)
findlabel(char *s)
{
int i;
int i, rng = scin(s, '.');
char name[64];
scpy(s, name, rng > 0 ? rng + 1 : 64);
for(i = 0; i < labelslen; ++i)
if(scmp(labels[i].name, s, 64))
if(scmp(labels[i].name, name, 64))
return &labels[i];
return NULL;
}
Label *
findlabelmacro(char *s)
Uint16
findlabeladdr(char *s)
{
int i, o = 0, pti = scin(s, '.');
char name[64], param[64];
Label *l;
if(pti > 0) {
scpy(s, name, pti + 1);
scpy(s + pti + 1, param, 64);
} else
scpy(s, name, 64);
if(!(l = findlabelplain(name)) || !l->macro)
return NULL;
/* find macro offset */
int i, o = 0;
char *param;
Label *l = findlabel(s);
if(scin(s, '.') < 1)
return l->addr;
param = s + scin(s, '.') + 1;
for(i = 0; i < l->macro->len; ++i) {
if(scmp(l->macro->params[i], param, 64)) {
l->offset = o;
break;
}
if(scmp(l->macro->params[i], param, 64))
return l->addr + o;
o += l->macro->length[i];
}
return l;
printf("Warning %s.%s[%s]\n", l->name, param, l->macro->name);
return 0;
}
Label *
findlabel(char *s)
Uint8
findlabellen(char *s)
{
if(scin(s, '.') > 0)
return findlabelmacro(s);
return findlabelplain(s);
int i;
char *param;
Label *l = findlabel(s);
if(scin(s, '.') < 1)
return l->len;
param = s + scin(s, '.') + 1;
for(i = 0; i < l->macro->len; ++i)
if(scmp(l->macro->params[i], param, 64))
return l->macro->length[i];
printf("Warning %s.%s[%s]\n", l->name, param, l->macro->name);
return 0;
}
Uint8
@ -356,9 +360,9 @@ pass2(FILE *f)
else if(w[0] == '+' && sihx(w + 1) && slen(w + 1) == 4) pushshort((Sint16)shex(w + 1), 1);
else if(w[0] == '-' && sihx(w + 1) && slen(w + 1) == 2) pushbyte((Sint8)(shex(w + 1) * -1), 1);
else if(w[0] == '-' && sihx(w + 1) && slen(w + 1) == 4) pushshort((Sint16)(shex(w + 1) * -1), 1);
else if(w[0] == '=' && (l = findlabel(w + 1)) && l->len){ pushshort(l->addr + l->offset, 1); pushbyte(findopcode(l->len == 2 ? "STR2" : "STR"),0); }
else if(w[0] == '~' && (l = findlabel(w + 1)) && l->len){ pushshort(l->addr + l->offset, 1); pushbyte(findopcode(l->len == 2 ? "LDR2" : "LDR"),0); }
else if((l = findlabel(w + 1))) pushshort(l->addr + l->offset, w[0] == ',');
else if(w[0] == '=' && (l = findlabel(w + 1)) && l->len){ pushshort(findlabeladdr(w+1), 1); pushbyte(findopcode(findlabellen(w+1) == 2? "STR2" : "STR"), 0); }
else if(w[0] == '~' && (l = findlabel(w + 1)) && l->len){ pushshort(findlabeladdr(w+1), 1); pushbyte(findopcode(findlabellen(w+1) == 2 ? "LDR2" : "LDR"), 0); }
else if((l = findlabel(w + 1))) pushshort(findlabeladdr(w+1), w[0] == ',');
else {
return error("Unknown label in second pass", w);
}

15
examples/struct.usm
View file

@ -4,16 +4,21 @@
:dev/w fff9 ( std write port )
&Rect2d { x 2 y 2 width 2 height 2 }
&ColorRGB { r 1 g 1 b 1 }
;rc1 Rect2d
( TODO )
;red ColorRGB
|0100 @RESET
#abcd ,rc1.height STR2
,rc1.height LDR2
,rc1.height LDR2
( byte mode )
#ff =red.r
~red.r
( short mode )_
#1234 =rc1.x
#abcd =rc1.height
~rc1.height
BRK