uxn

commit 491e4b7435bb82dd55ccb4f7a086629f3d5c988c
parent a450959e9f8a6aa72eceb36c781a57603684de0a
Author: Devine Lu Linvega <aliceffekt@gmail.com>
Date:   Mon,  2 Jan 2023 09:50:09 -0800

Returned the k variable in uxn core

Diffstat:
M
src/uxn.c
 | 
9
++++-----

1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/src/uxn.c b/src/uxn.c
@@ -16,11 +16,9 @@ WITH REGARD TO THIS SOFTWARE.
 	x,y: macro in params. d: macro in device. j: macro temp variables. o: macro out param. */
 
 #define HALT(c) { return uxn_halt(u, instr, (c), pc - 1); }
-#define LITERAL { if(bs) { PEEK16(a, pc) PUSH16(src, a) pc += 2; } else { a = u->ram[pc]; PUSH8(src, a) pc += 1; } }
-#define CALL { if(bs){ PEEK16(a, pc) PUSH16(u->rst, pc + 2) pc = a; } else { a = u->ram[pc]; PUSH16(u->rst, pc + 1) pc += (Sint8)a + 2; } }
 #define JUMP(x) { if(bs) pc = (x); else pc += (Sint8)(x); }
 #define PUSH8(s, x) { if(s->ptr == 0xff) HALT(2) s->dat[s->ptr++] = (x); }
-#define PUSH16(s, x) { if((j = s->ptr) >= 0xfe) HALT(2) s->dat[j] = (x) >> 8; s->dat[j + 1] = (x); s->ptr = j + 2; }
+#define PUSH16(s, x) { if((j = s->ptr) >= 0xfe) HALT(2) k = (x); s->dat[j] = k >> 8; s->dat[j + 1] = k; s->ptr = j + 2; }
 #define PUSH(s, x) { if(bs) { PUSH16(s, (x)) } else { PUSH8(s, (x)) } }
 #define POP8(o) { if(!(j = *sp)) HALT(1) o = (Uint16)src->dat[--j]; *sp = j; }
 #define POP16(o) { if((j = *sp) <= 1) HALT(1) o = src->dat[j - 1]; o += src->dat[j - 2] << 8; *sp = j - 2; }
@@ -34,7 +32,7 @@ WITH REGARD TO THIS SOFTWARE.
 int
 uxn_eval(Uxn *u, Uint16 pc)
 {
-	unsigned int a, b, c, j, bs, instr;
+	unsigned int a, b, c, j, k, bs, instr;
 	Uint8 kptr, *sp;
 	Stack *src, *dst;
 	if(!pc || u->dev[0x0f]) return 0;
@@ -48,7 +46,8 @@ uxn_eval(Uxn *u, Uint16 pc)
 		/* Short Mode */
 		bs = instr & 0x20;
 		switch(instr & 0x1f) {
-		case 0x00: /* LIT */ if(instr & 0x80) { LITERAL } else { CALL } break;
+		case 0x00: /* LIT */ if(bs) { PEEK16(a, pc) PUSH16(src, a) pc += 2; }
+		                     else   { a = u->ram[pc]; PUSH8(src, a) pc++; } break;
 		case 0x01: /* INC */ POP(a) PUSH(src, a + 1) break;
 		case 0x02: /* POP */ POP(a) break;
 		case 0x03: /* NIP */ POP(a) POP(b) PUSH(src, a) break;