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Implementing better macros

This commit is contained in:
neauoire 2021-03-13 10:31:29 -08:00
parent e865be5d88
commit fd883dc4c8
3 changed files with 63 additions and 67 deletions
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83
assembler.c
View File

@ -24,17 +24,17 @@ typedef struct {
typedef struct {
Uint8 len, length[16], size, refs;
char name[64], params[16][64];
} Macro;
} Template;
typedef struct {
Uint8 len, offset, refs;
Uint16 addr;
char name[64];
Macro *macro;
Template *template;
} Label;
int macroslen;
Macro macros[256];
int templateslen;
Template templates[256];
int labelslen;
Label labels[256];
@ -91,13 +91,13 @@ pushtext(char *s, int lit)
pushbyte(c, 0);
}
Macro *
findmacro(char *s)
Template *
findtemplate(char *s)
{
int i;
for(i = 0; i < macroslen; ++i)
if(scmp(macros[i].name, s, 64))
return &macros[i];
for(i = 0; i < templateslen; ++i)
if(scmp(templates[i].name, s, 64))
return &templates[i];
return NULL;
}
@ -122,12 +122,12 @@ findlabeladdr(char *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))
for(i = 0; i < l->template->len; ++i) {
if(scmp(l->template->params[i], param, 64))
return l->addr + o;
o += l->macro->length[i];
o += l->template->length[i];
}
printf("!!! Warning %s.%s[%s]\n", l->name, param, l->macro->name);
printf("!!! Warning %s.%s[%s]\n", l->name, param, l->template->name);
return 0;
}
@ -140,10 +140,10 @@ findlabellen(char *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);
for(i = 0; i < l->template->len; ++i)
if(scmp(l->template->params[i], param, 64))
return l->template->length[i];
printf("!!! Warning %s.%s[%s]\n", l->name, param, l->template->name);
return 0;
}
@ -186,18 +186,18 @@ error(char *name, char *id)
}
int
makemacro(char *name, FILE *f)
maketemplate(char *name, FILE *f)
{
Uint8 mode = 0;
Macro *m;
Template *m;
char wv[64];
if(findmacro(name))
return error("Macro duplicate", name);
if(findtemplate(name))
return error("Template duplicate", name);
if(sihx(name) && slen(name) % 2 == 0)
return error("Macro name is hex number", name);
return error("Template name is hex number", name);
if(findopcode(name))
return error("Macro name is invalid", name);
m = &macros[macroslen++];
return error("Template name is invalid", name);
m = &templates[templateslen++];
scpy(name, m->name, 64);
while(fscanf(f, "%s", wv)) {
if(wv[0] == '{')
@ -213,12 +213,12 @@ makemacro(char *name, FILE *f)
}
mode = !mode;
}
printf("New macro: %s[%d:%d]\n", name, m->len, m->size);
printf("New template: %s[%d:%d]\n", name, m->len, m->size);
return 1;
}
int
makelabel(char *name, Uint16 addr, Uint8 len, Macro *m)
makelabel(char *name, Uint16 addr, Uint8 len, Template *m)
{
Label *l;
if(findlabel(name))
@ -233,35 +233,27 @@ makelabel(char *name, Uint16 addr, Uint8 len, Macro *m)
l->refs = 0;
scpy(name, l->name, 64);
if(m)
l->macro = m;
l->template = m;
printf("New label: %s, at 0x%04x[%d]\n", l->name, l->addr, l->len);
return 1;
}
int
makeconst(char *id, FILE *f)
{
char wv[64];
fscanf(f, "%s", wv);
return makelabel(id, shex(wv), 1, 0);
}
int
makevariable(char *id, Uint16 *addr, FILE *f)
{
char wv[64];
Uint16 origin;
Uint8 len;
Macro *m = NULL;
Template *m = NULL;
fscanf(f, "%s", wv);
origin = *addr;
if(sihx(wv))
len = shex(wv);
else if((m = findmacro(wv))) {
else if((m = findtemplate(wv))) {
len = m->size;
m->refs++;
} else
return error("Invalid macro", wv);
return error("Invalid template", wv);
*addr += len;
return makelabel(id, origin, len, m);
}
@ -305,10 +297,7 @@ pass1(FILE *f)
if(!makevariable(w + 1, &addr, f))
return error("Pass1 failed", w);
} else if(w[0] == '&') {
if(!makemacro(w + 1, f))
return error("Pass1 failed", w);
} else if(w[0] == ':') {
if(!makeconst(w + 1, f))
if(!maketemplate(w + 1, f))
return error("Pass1 failed", w);
} else if(findopcode(w) || scmp(w, "BRK", 4))
addr += 1;
@ -338,7 +327,7 @@ pass1(FILE *f)
int
pass2(FILE *f)
{
int ccmnt = 0, cbits = 0, cmacro = 0;
int ccmnt = 0, cbits = 0, ctemplate = 0;
char w[64], scope[64], subw[64];
printf("Pass 2\n");
while(fscanf(f, "%s", w) == 1) {
@ -355,7 +344,7 @@ pass2(FILE *f)
scpy(subw, w + 1, 64);
}
if(skipblock(w, &ccmnt, '(', ')')) continue;
if(skipblock(w, &cmacro, '{', '}')) continue;
if(skipblock(w, &ctemplate, '{', '}')) continue;
/* clang-format off */
if(skipblock(w, &cbits, '[', ']')) {
if(w[0] == '[' || w[0] == ']') { continue; }
@ -395,9 +384,9 @@ cleanup(void)
for(i = 0; i < labelslen; ++i)
if(!labels[i].refs)
printf("--- Unused label: %s\n", labels[i].name);
for(i = 0; i < macroslen; ++i)
if(!macros[i].refs)
printf("--- Unused macro: %s\n", macros[i].name);
for(i = 0; i < templateslen; ++i)
if(!templates[i].refs)
printf("--- Unused template: %s\n", templates[i].name);
}
int

2
build.sh
View File

@ -21,4 +21,4 @@ cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werr
# run
./bin/assembler projects/software/left.usm bin/boot.rom
./bin/emulator bin/boot.rom
# ./bin/emulator bin/boot.rom

37
projects/software/left.usm
View File

@ -6,6 +6,9 @@
- Double-click select word
- Right-click find next instance of selection
- Draw tab characters
- Don't redraw if nothing has changed
- Input on selection should erase selection range
- Erase on selection should erase selection range
- Scrollbar
- Don't scroll past oef
- Hor scroll
@ -33,7 +36,6 @@
;i 2 ;j 2 ;k 1 ;l 1 ;addr 2
;selection Range2d ;position Point2d ;scroll Point2d
;pt Point2d ;mouse Point2d ;touch Touch2d
;textarea Textarea2d
;label Label2d ( remove )
@ -42,7 +44,6 @@
( load file )
,filepath ,load-file JSR2
( place textarea )
#0018 =textarea.x1 ~SCRN.height #0008 SUB2 =textarea.y2
@ -72,11 +73,11 @@ BRK
,no-ctrl-left ~CTRL #40 NEQ JMP2? POP2
( clamp ) ,no-ctrl-left ~selection.from ,document.body EQU2 JMP2? POP2
~selection.from #0001 SUB2 DUP2 =selection.from #0001 ADD2 =selection.to
,clamp-selection JSR2,follow-selection JSR2 ,redraw JSR2 ,ctrl-end JMP2
,clamp-selection JSR2 ,follow-selection JSR2 ,redraw JSR2 ,ctrl-end JMP2
@no-ctrl-left
,no-ctrl-right ~CTRL #80 NEQ JMP2? POP2
~selection.from #0001 ADD2 DUP2 =selection.from #0001 ADD2 =selection.to
,clamp-selection JSR2,follow-selection JSR2 ,redraw JSR2 ,ctrl-end JMP2
,clamp-selection JSR2 ,follow-selection JSR2 ,redraw JSR2 ,ctrl-end JMP2
@no-ctrl-right
( alt )
,no-alt ~CTRL #0f AND #02 NEQ JMP2? POP2
@ -119,27 +120,33 @@ BRK
( keys )
,keys-end ~KEYS #00 EQU JMP2? POP2
,no-keys ~KEYS #00 EQU JMP2? POP2
,no-backspace ~KEYS #08 NEQ JMP2? POP2
,$no-backspace ~KEYS #08 NEQ JMP2? POP2
( erase )
,$erase-multiple ~selection.to ~selection.from SUB2 #0001 NEQ2 JMP2? POP2
$erase-single
~selection.to ~selection.from SUB2 ,shift-left JSR2
,$erase-end JMP2
$erase-multiple
~selection.from #0001 ADD2 =selection.from
~selection.to ~selection.from SUB2 #0001 ADD2 ,shift-left JSR2
$erase-end
~selection.from #0001 SUB2 =selection.from
~selection.from #0001 ADD2 =selection.to
( release ) #00 =KEYS
,redraw JSR2
,keys-end JMP2
@no-backspace
,$keys-end JMP2
$no-backspace
( insert )
~selection.to ~selection.from SUB2 ,shift-right JSR2
~KEYS ~selection.from STR
~selection.from #0001 ADD2 =selection.from
$keys-end
~selection.from #0001 ADD2 =selection.to
( release ) #00 =KEYS
,redraw JSR2
@keys-end
@no-keys
( mouse )
@ -532,7 +539,7 @@ RTS
( draw ) #01
~i ~selection.from #0001 SUB2 GTH2
~i ~selection.to LTH2 #0101 EQU2
#05 MUL ADD =SPRT.color
#05 MUL ADD ~i ~selection.from EQU2 ADD =SPRT.color
,$no-linebreak ~i LDR #0a NEQ ~i LDR #0d NEQ #0101 EQU2 JMP2? POP2
( draw linebreak )
@ -578,10 +585,10 @@ RTS
#0000 =SPRT.y
,scrollbar_bg =SPRT.addr
$loop
$loop NOP
( draw ) #08 =SPRT.color
( incr ) ~SPRT.y #0008 ADD2 =SPRT.y
,$loop ~SPRT.y ~SCRN.height LTH2 JMP2? POP2
~SPRT.y ~SCRN.height LTH2 ^$loop MUL JMPS
#0000 =SPRT.y
,arrowup_icn =SPRT.addr