diff --git a/src/uxn.c b/src/uxn.c index 8bfc30d..c670d84 100644 --- a/src/uxn.c +++ b/src/uxn.c @@ -11,24 +11,24 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE. */ -#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; } -#define JUMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); } -#define POKE(x, y) { if(m2) { t = (x); ram[t++] = y >> 8; ram[t] = y; } else ram[(x)] = (y); } -#define PEEK(o, x) { if(m2) { t = (x); o = ram[t++] << 8 | ram[t]; } else o = ram[(x)]; } -#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 PUSH1(y) { s->dat[s->ptr++] = (y); } -#define PUSH2(y) { t = (y); s->dat[s->ptr++] = t >> 0x8; s->dat[s->ptr++] = t; } -#define PUSHx(y) { if(m2) { PUSH2(y) } else PUSH1(y) } -#define POP1(o) { o = s->dat[--*sp]; } -#define POP2(o) { o = s->dat[--*sp] | (s->dat[--*sp] << 0x8); } -#define POPx(o) { if(m2) { POP2(o) } else POP1(o) } +#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; } +#define JUMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); } +#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 POP1(o) { o = s->dat[--*sp]; } +#define POP2(o) { o = s->dat[--*sp] | (s->dat[--*sp] << 0x8); } +#define POPx(o) { if(m2) { POP2(o) } else POP1(o) } +#define POKE(x, y, r) { if(m2) { r = (x); ram[r++] = y >> 8; ram[r] = y; } else ram[(x)] = (y); } +#define PEEK(o, x, r) { if(m2) { r = (x); o = ram[r++] << 8 | ram[r]; } else o = ram[(x)]; } +#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); } int uxn_eval(Uxn *u, Uint16 pc) { - Uint8 ksp, *sp, *tp, *ram = u->ram; - Uint16 a, b, c, t; + Uint8 t, ksp, *sp, *tp, *ram = u->ram; + Uint16 tt, a, b, c; if(!pc || u->dev[0x0f]) return 0; for(;;) { Uint8 ins = ram[pc++], opc = ins & 0x1f; @@ -66,12 +66,12 @@ uxn_eval(Uxn *u, Uint16 pc) case 0x0d: /* JCN */ POPx(a) POP1(b) if(b) JUMP(a) break; case 0x0e: /* JSR */ POPx(a) FLIP PUSH2(pc) JUMP(a) break; case 0x0f: /* STH */ POPx(a) FLIP PUSHx(a) break; - case 0x10: /* LDZ */ POP1(a) PEEK(b, a) PUSHx(b) break; - case 0x11: /* STZ */ POP1(a) POPx(b) POKE(a, b) break; - case 0x12: /* LDR */ POP1(a) PEEK(b, pc + (Sint8)a) PUSHx(b) break; - case 0x13: /* STR */ POP1(a) POPx(b) POKE(pc + (Sint8)a, b) break; - case 0x14: /* LDA */ POP2(a) PEEK(b, a) PUSHx(b) break; - case 0x15: /* STA */ POP2(a) POPx(b) POKE(a, b) break; + case 0x10: /* LDZ */ POP1(a) PEEK(b, a, t) PUSHx(b) break; + case 0x11: /* STZ */ POP1(a) POPx(b) POKE(a, b, t) break; + case 0x12: /* LDR */ POP1(a) PEEK(b, pc + (Sint8)a, tt) PUSHx(b) break; + case 0x13: /* STR */ POP1(a) POPx(b) POKE(pc + (Sint8)a, b, tt) break; + case 0x14: /* LDA */ POP2(a) PEEK(b, a, tt) PUSHx(b) break; + case 0x15: /* STA */ POP2(a) POPx(b) POKE(a, b, tt) break; case 0x16: /* DEI */ POP1(a) DEVR(b, a) PUSHx(b) break; case 0x17: /* DEO */ POP1(a) POPx(b) DEVW(a, b) break; case 0x18: /* ADD */ POPx(a) POPx(b) PUSHx(b + a) break;