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(uxnmin) Optimized

This commit is contained in:
Devine Lu Linvega 2024-06-29 11:47:25 -08:00
parent 3a021d904d
commit fdd5df0c69
1 changed files with 34 additions and 34 deletions
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68
ref/uxnmin.c
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@ -13,25 +13,27 @@ typedef struct Uxn {
Stack wst, rst;
} Uxn;
int uxn_eval(Uxn *u, Uint16 pc);
Uxn uxn;
int uxn_eval(Uint16 pc);
Uint8
emu_dei(Uxn *u, Uint8 addr)
emu_dei(Uint8 addr)
{
return u->dev[addr];
return uxn.dev[addr];
}
void
emu_deo(Uxn *u, Uint8 addr, Uint8 value)
emu_deo(Uint8 addr, Uint8 value)
{
u->dev[addr] = value;
uxn.dev[addr] = value;
switch(addr) {
case 0x18: fputc(u->dev[0x18], stdout), fflush(stdout); return;
case 0x19: fputc(u->dev[0x19], stderr), fflush(stderr); return;
case 0x18: fputc(uxn.dev[0x18], stdout), fflush(stdout); return;
case 0x19: fputc(uxn.dev[0x19], stderr), fflush(stderr); return;
}
}
#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
#define FLIP { s = ins & 0x40 ? &uxn.wst : &uxn.rst; }
#define JUMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); }
#define POP1(o) { o = s->dat[--*sp]; }
#define POP2(o) { o = s->dat[--*sp] | (s->dat[--*sp] << 0x8); }
@ -39,31 +41,30 @@ emu_deo(Uxn *u, Uint8 addr, Uint8 value)
#define PUSH1(y) { s->dat[s->ptr++] = (y); }
#define PUSH2(y) { tt = (y); s->dat[s->ptr++] = tt >> 0x8; s->dat[s->ptr++] = tt; }
#define PUSHx(y) { if(m2) { PUSH2(y) } else PUSH1(y) }
#define PEEK(o, x, r) { if(m2) { r = (x); o = ram[r++] << 8 | ram[r]; } else o = ram[(x)]; }
#define POKE(x, y, r) { if(m2) { r = (x); ram[r++] = y >> 8; ram[r] = y; } else ram[(x)] = (y); }
#define DEVR(o, p) { if(m2) { o = (emu_dei(u, p) << 8) | emu_dei(u, p + 1); } else o = emu_dei(u, p); }
#define DEVW(p, y) { if(m2) { emu_deo(u, p, y >> 8); emu_deo(u, p + 1, y); } else emu_deo(u, p, y); }
#define PEEK(o, x, r) { if(m2) { r = (x); o = uxn.ram[r++] << 8 | uxn.ram[r]; } else o = uxn.ram[(x)]; }
#define POKE(x, y, r) { if(m2) { r = (x); uxn.ram[r++] = y >> 8; uxn.ram[r] = y; } else uxn.ram[(x)] = (y); }
#define DEVR(o, p) { if(m2) { o = (emu_dei(p) << 8) | emu_dei(p + 1); } else o = emu_dei(p); }
#define DEVW(p, y) { if(m2) { emu_deo(p, y >> 8); emu_deo(p + 1, y); } else emu_deo(p, y); }
int
uxn_eval(Uxn *u, Uint16 pc)
uxn_eval(Uint16 pc)
{
Uint8 *ram = u->ram;
if(!pc || u->dev[0x0f]) return 0;
if(!pc || uxn.dev[0x0f]) return 0;
for(;;) {
Uint16 tt, a, b, c;
Uint8 t, kp, *sp, ins = ram[pc++];
Uint8 t, kp, *sp, ins = uxn.ram[pc++];
/* 2 */ Uint8 m2 = ins & 0x20;
/* r */ Stack *s = ins & 0x40 ? &u->rst : &u->wst;
/* r */ Stack *s = ins & 0x40 ? &uxn.rst : &uxn.wst;
/* k */ if(ins & 0x80) kp = s->ptr, sp = &kp; else sp = &s->ptr;
switch(ins & 0x1f) {
case 0x00:
switch(ins) {
case 0x00: /* BRK */ return 1;
case 0x20: /* JCI */ POP1(b) if(!b) { pc += 2; break; } /* fall */
case 0x40: /* JMI */ a = ram[pc++] << 8 | ram[pc++]; pc += a; break;
case 0x60: /* JSI */ PUSH2(pc + 2) a = ram[pc++] << 8 | ram[pc++]; pc += a; break;
case 0xa0: case 0xe0: /* LIT2 */ PUSH1(ram[pc++]) /* fall */
case 0x80: case 0xc0: /* LIT */ PUSH1(ram[pc++]) break;
case 0x40: /* JMI */ a = uxn.ram[pc++] << 8 | uxn.ram[pc++]; pc += a; break;
case 0x60: /* JSI */ PUSH2(pc + 2) a = uxn.ram[pc++] << 8 | uxn.ram[pc++]; pc += a; break;
case 0xa0: case 0xe0: /* LIT2 */ PUSH1(uxn.ram[pc++]) /* fall */
case 0x80: case 0xc0: /* LIT */ PUSH1(uxn.ram[pc++]) break;
} break;
case 0x01: /* INC */ POPx(a) PUSHx(a + 1) break;
case 0x02: /* POP */ POPx(a) break;
@ -101,10 +102,10 @@ uxn_eval(Uxn *u, Uint16 pc)
}
void
console_input(Uxn *u, char c, int type)
console_input(char c, int type)
{
u->dev[0x12] = c, u->dev[0x17] = type;
uxn_eval(u, u->dev[0x10] << 8 | u->dev[0x11]);
uxn.dev[0x12] = c, uxn.dev[0x17] = type;
uxn_eval(uxn.dev[0x10] << 8 | uxn.dev[0x11]);
}
int
@ -112,7 +113,6 @@ main(int argc, char **argv)
{
FILE *f;
int i = 1;
Uxn u = {0};
if(argc < 2) {
fprintf(stdout, "usage: %s file.rom [args..]\n", argv[0]);
return 0;
@ -122,22 +122,22 @@ main(int argc, char **argv)
fprintf(stderr, "uxnmin: Error %s\n", argv[1]);
return 0;
}
u.dev[0x17] = argc - i;
fread(&u.ram[0x0100], 0xff00, 1, f), fclose(f);
if(uxn_eval(&u, 0x0100) && (u.dev[0x10] << 8 | u.dev[0x11])) {
uxn.dev[0x17] = argc - i;
fread(&uxn.ram[0x0100], 0xff00, 1, f), fclose(f);
if(uxn_eval(0x0100) && (uxn.dev[0x10] << 8 | uxn.dev[0x11])) {
for(; i < argc; i++) {
char *p = argv[i];
while(*p) console_input(&u, *p++, 0x2);
console_input(&u, '\n', i == argc - 1 ? 0x4 : 0x3);
while(*p) console_input(*p++, 0x2);
console_input('\n', i == argc - 1 ? 0x4 : 0x3);
}
while(!u.dev[0x0f]) {
while(!uxn.dev[0x0f]) {
int c = fgetc(stdin);
if(c == EOF) {
console_input(&u, 0x00, 0x4);
console_input(0x00, 0x4);
break;
}
console_input(&u, (Uint8)c, 0x1);
console_input((Uint8)c, 0x1);
}
}
return u.dev[0x0f] & 0x7f;
return uxn.dev[0x0f] & 0x7f;
}