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(uxn.c) Removed used of stack pointer for circular arithmetic

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neauoire 2023-10-30 09:29:40 -07:00
parent bb99a02bf7
commit f1f1babd47
2 changed files with 8 additions and 11 deletions
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17
src/uxn.c
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@ -17,12 +17,12 @@ WITH REGARD TO THIS SOFTWARE.
[ L2 ][ N2 ][ T2 ] <
*/
#define T *(ptr)
#define N *(ptr - 1)
#define L *(ptr - 2)
#define X *(ptr - 3)
#define Y *(ptr - 4)
#define Z *(ptr - 5)
#define T *(s->dat + s->ptr - 1)
#define N *(s->dat + s->ptr - 2)
#define L *(s->dat + s->ptr - 3)
#define X *(s->dat + s->ptr - 4)
#define Y *(s->dat + s->ptr - 5)
#define Z *(s->dat + s->ptr - 6)
#define T2 (N << 8 | T)
#define H2 (L << 8 | N)
#define N2 (X << 8 | L)
@ -30,12 +30,10 @@ WITH REGARD TO THIS SOFTWARE.
#define T2_(v) { r = (v); T = r; N = r >> 8; }
#define N2_(v) { r = (v); L = r; X = r >> 8; }
#define L2_(v) { r = (v); Y = r; Z = r >> 8; }
#define DEI(p) (dei_masks[p] ? emu_dei(u, (p)) : u->dev[(p)])
#define DEO(p, v) { u->dev[p] = v; if(deo_masks[p]) emu_deo(u, p); }
#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
#define SHIFT(y) { s->ptr += (y); ptr = s->dat + s->ptr - 1; }
#define SHIFT(y) { s->ptr += (y); }
#define SET(x, y) { SHIFT((ins & 0x80) ? x + y : y) }
int
@ -47,7 +45,6 @@ uxn_eval(Uxn *u, Uint16 pc)
for(;;) {
int ins = ram[pc++];
Stack *s = ins & 0x40 ? &u->rst : &u->wst;
Uint8 *ptr = s->dat + s->ptr - 1;
switch(ins & 0x1f ? ins & 0x3f : ins << 4) {
/* IMM */
case 0x000: /* BRK */ return 1;

2
src/uxnemu.c
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@ -561,7 +561,7 @@ main(int argc, char **argv)
/* Read flag. Right now, there can be only one. */
if(argv[i][0] == '-') {
if(argv[i][1] == 'v')
return system_version("Uxnemu - Graphical Varvara Emulator", "25 Oct 2023");
return system_version("Uxnemu - Graphical Varvara Emulator", "30 Oct 2023");
if(argv[i][1] == '-')
i++;
if(strcmp(argv[i], "-2x") == 0 || strcmp(argv[i], "-3x") == 0)