commit 83762de
Devine Lu Linvega
·
2024-01-15 18:05:45 +0000 UTC
parent 6ff623d
Use faster core
5 files changed,
+141,
-102
+23,
-24
1@@ -18,18 +18,29 @@ WITH REGARD TO THIS SOFTWARE.
2 char *boot_rom;
3 Uint16 dev_vers[0x10];
4
5+static void
6+system_zero(Uxn *u, int soft)
7+{
8+ int i;
9+ for(i = 0x100 * soft; i < 0x10000; i++)
10+ u->ram[i] = 0;
11+ for(i = 0x0; i < 0x100; i++)
12+ u->dev[i] = 0;
13+ u->wst.ptr = 0;
14+ u->rst.ptr = 0;
15+}
16+
17 static int
18 system_load(Uxn *u, char *filename)
19 {
20- int l, i = 0;
21 FILE *f = fopen(filename, "rb");
22- if(!f)
23- return 0;
24- l = fread(&u->ram[PAGE_PROGRAM], 0x10000 - PAGE_PROGRAM, 1, f);
25- while(l && ++i < RAM_PAGES)
26- l = fread(u->ram + 0x10000 * i, 0x10000, 1, f);
27- fclose(f);
28- return 1;
29+ if(f) {
30+ int i, l = fread(&u->ram[PAGE_PROGRAM], 0x10000 - PAGE_PROGRAM, 1, f);
31+ while(l && ++i < RAM_PAGES)
32+ l = fread(u->ram + 0x10000 * i, 0x10000, 1, f);
33+ fclose(f);
34+ }
35+ return !!f;
36 }
37
38 static void
39@@ -68,35 +79,23 @@ system_version(char *name, char *date)
40 return 0;
41 }
42
43-void
44-system_boot(Uxn *u, int soft)
45-{
46- int i;
47- for(i = 0x100 * soft; i < 0x10000; i++)
48- u->ram[i] = 0;
49- for(i = 0x0; i < 0x100; i++)
50- u->dev[i] = 0;
51- u->wst.ptr = 0;
52- u->rst.ptr = 0;
53-}
54-
55 void
56 system_reboot(Uxn *u, char *rom, int soft)
57 {
58- system_boot(u, soft);
59+ system_zero(u, soft);
60 if(system_load(u, boot_rom))
61 if(uxn_eval(u, PAGE_PROGRAM))
62 boot_rom = rom;
63 }
64
65 int
66-system_init(Uxn *u, Uint8 *ram, char *rom)
67+system_boot(Uxn *u, Uint8 *ram, char *rom)
68 {
69 u->ram = ram;
70- system_boot(u, 0);
71+ system_zero(u, 0);
72 if(!system_load(u, rom))
73 if(!system_load(u, "boot.rom"))
74- return system_error("Init", "Failed to load rom.");
75+ return system_error("Could not load rom", rom);
76 boot_rom = rom;
77 return 1;
78 }
+2,
-1
1@@ -16,7 +16,8 @@ void system_reboot(Uxn *u, char *rom, int soft);
2 void system_inspect(Uxn *u);
3 int system_version(char *emulator, char *date);
4 int system_error(char *msg, const char *err);
5-int system_init(Uxn *u, Uint8 *ram, char *rom);
6+int system_boot(Uxn *u, Uint8 *ram, char *rom);
7+
8 Uint8 system_dei(Uxn *u, Uint8 addr);
9 void system_deo(Uxn *u, Uint8 *d, Uint8 port);
10
+98,
-57
1@@ -11,71 +11,112 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
2 WITH REGARD TO THIS SOFTWARE.
3 */
4
5-#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
6-#define JUMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); }
7-#define POP1(o) { o = s->dat[--*sp]; }
8-#define POP2(o) { o = s->dat[--*sp] | (s->dat[--*sp] << 0x8); }
9-#define POPx(o) { if(m2) { POP2(o) } else POP1(o) }
10-#define PUSH1(y) { s->dat[s->ptr++] = (y); }
11-#define PUSH2(y) { tt = (y); s->dat[s->ptr++] = tt >> 0x8; s->dat[s->ptr++] = tt; }
12-#define PUSHx(y) { if(m2) { PUSH2(y) } else PUSH1(y) }
13-#define PEEK(o, x, r) { if(m2) { r = (x); o = ram[r++] << 8 | ram[r]; } else o = ram[(x)]; }
14-#define POKE(x, y, r) { if(m2) { r = (x); ram[r++] = y >> 8; ram[r] = y; } else ram[(x)] = (y); }
15-#define DEVR(o, p) { if(m2) { o = (emu_dei(u, p) << 8) | emu_dei(u, p + 1); } else o = emu_dei(u, p); }
16-#define DEVW(p, y) { if(m2) { emu_deo(u, p, y >> 8); emu_deo(u, p + 1, y); } else emu_deo(u, p, y); }
17+/* Registers
18+[ Z ][ Y ][ X ][ L ][ N ][ T ] <
19+[ . ][ . ][ . ][ H2 ][ . ] <
20+[ L2 ][ N2 ][ T2 ] <
21+*/
22+
23+#define T *(s->dat + s->ptr)
24+#define N *(s->dat + (Uint8)(s->ptr - 1))
25+#define L *(s->dat + (Uint8)(s->ptr - 2))
26+#define X *(s->dat + (Uint8)(s->ptr - 3))
27+#define Y *(s->dat + (Uint8)(s->ptr - 4))
28+#define Z *(s->dat + (Uint8)(s->ptr - 5))
29+#define T2 (N << 8 | T)
30+#define H2 (L << 8 | N)
31+#define N2 (X << 8 | L)
32+#define L2 (Z << 8 | Y)
33+#define T2_(v) { r = (v); T = r; N = r >> 8; }
34+#define N2_(v) { r = (v); L = r; X = r >> 8; }
35+#define L2_(v) { r = (v); Y = r; Z = r >> 8; }
36+#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
37+#define SHIFT(y) { s->ptr += (y); }
38+#define SET(x, y) { SHIFT((ins & 0x80) ? x + y : y) }
39
40 int
41 uxn_eval(Uxn *u, Uint16 pc)
42 {
43- Uint8 t, kp, *sp, *ram = u->ram;
44- Uint16 tt, a, b, c;
45+ Uint16 t, n, l, r;
46+ Uint8 *ram = u->ram, *rr;
47 if(!pc || u->dev[0x0f]) return 0;
48 for(;;) {
49- Uint8 ins = ram[pc++], m2 = ins & 0x20;
50+ Uint8 ins = ram[pc++];
51 Stack *s = ins & 0x40 ? &u->rst : &u->wst;
52- if(ins & 0x80) kp = s->ptr, sp = &kp;
53- else sp = &s->ptr;
54- switch(ins & 0x1f) {
55+ switch(ins & 0x3f) {
56+ /* IMM */
57 case 0x00: case 0x20:
58- switch(ins) {
59- case 0x00: /* BRK */ return 1;
60- case 0x20: /* JCI */ POP1(b) if(!b) { pc += 2; break; }
61- case 0x40: /* JMI */ a = ram[pc++] << 8 | ram[pc++]; pc += a; break;
62- case 0x60: /* JSI */ PUSH2(pc + 2) a = ram[pc++] << 8 | ram[pc++]; pc += a; break;
63- case 0x80: case 0xc0: /* LIT */ PUSH1(ram[pc++]) break;
64- case 0xa0: case 0xe0: /* LIT2 */ PUSH1(ram[pc++]) PUSH1(ram[pc++]) break;
65- } break;
66- case 0x01: /* INC */ POPx(a) PUSHx(a + 1) break;
67- case 0x02: /* POP */ POPx(a) break;
68- case 0x03: /* NIP */ POPx(a) POPx(b) PUSHx(a) break;
69- case 0x04: /* SWP */ POPx(a) POPx(b) PUSHx(a) PUSHx(b) break;
70- case 0x05: /* ROT */ POPx(a) POPx(b) POPx(c) PUSHx(b) PUSHx(a) PUSHx(c) break;
71- case 0x06: /* DUP */ POPx(a) PUSHx(a) PUSHx(a) break;
72- case 0x07: /* OVR */ POPx(a) POPx(b) PUSHx(b) PUSHx(a) PUSHx(b) break;
73- case 0x08: /* EQU */ POPx(a) POPx(b) PUSH1(b == a) break;
74- case 0x09: /* NEQ */ POPx(a) POPx(b) PUSH1(b != a) break;
75- case 0x0a: /* GTH */ POPx(a) POPx(b) PUSH1(b > a) break;
76- case 0x0b: /* LTH */ POPx(a) POPx(b) PUSH1(b < a) break;
77- case 0x0c: /* JMP */ POPx(a) JUMP(a) break;
78- case 0x0d: /* JCN */ POPx(a) POP1(b) if(b) JUMP(a) break;
79- case 0x0e: /* JSR */ POPx(a) FLIP PUSH2(pc) JUMP(a) break;
80- case 0x0f: /* STH */ POPx(a) FLIP PUSHx(a) break;
81- case 0x10: /* LDZ */ POP1(a) PEEK(b, a, t) PUSHx(b) break;
82- case 0x11: /* STZ */ POP1(a) POPx(b) POKE(a, b, t) break;
83- case 0x12: /* LDR */ POP1(a) PEEK(b, pc + (Sint8)a, tt) PUSHx(b) break;
84- case 0x13: /* STR */ POP1(a) POPx(b) POKE(pc + (Sint8)a, b, tt) break;
85- case 0x14: /* LDA */ POP2(a) PEEK(b, a, tt) PUSHx(b) break;
86- case 0x15: /* STA */ POP2(a) POPx(b) POKE(a, b, tt) break;
87- case 0x16: /* DEI */ POP1(a) DEVR(b, a) PUSHx(b) break;
88- case 0x17: /* DEO */ POP1(a) POPx(b) DEVW(a, b) break;
89- case 0x18: /* ADD */ POPx(a) POPx(b) PUSHx(b + a) break;
90- case 0x19: /* SUB */ POPx(a) POPx(b) PUSHx(b - a) break;
91- case 0x1a: /* MUL */ POPx(a) POPx(b) PUSHx(b * a) break;
92- case 0x1b: /* DIV */ POPx(a) POPx(b) PUSHx(a ? b / a : 0) break;
93- case 0x1c: /* AND */ POPx(a) POPx(b) PUSHx(b & a) break;
94- case 0x1d: /* ORA */ POPx(a) POPx(b) PUSHx(b | a) break;
95- case 0x1e: /* EOR */ POPx(a) POPx(b) PUSHx(b ^ a) break;
96- case 0x1f: /* SFT */ POP1(a) POPx(b) PUSHx(b >> (a & 0xf) << (a >> 4)) break;
97+ switch(ins) {
98+ case 0x00: /* BRK */ return 1;
99+ case 0x20: /* JCI */ t=T; SHIFT(-1) if(!t) { pc += 2; break; } /* fall-through */
100+ case 0x40: /* JMI */ rr = ram + pc; pc += 2 + PEEK2(rr); break;
101+ case 0x60: /* JSI */ SHIFT( 2) rr = ram + pc; pc += 2; T2_(pc); pc += PEEK2(rr); break;
102+ case 0x80: /* LIT */ case 0xc0: SHIFT( 1) T = ram[pc++]; break;
103+ case 0xa0: /* LIT2 */ case 0xe0: SHIFT( 2) N = ram[pc++]; T = ram[pc++]; break;
104+ } break;
105+ /* ALU */
106+ case 0x01: /* INC */ t=T; SET(1, 0) T = t + 1; break;
107+ case 0x21: /* INC2 */ t=T2; SET(2, 0) T2_(t + 1) break;
108+ case 0x02: /* POP */ SET(1,-1) break;
109+ case 0x22: /* POP2 */ SET(2,-2) break;
110+ case 0x03: /* NIP */ t=T; SET(2,-1) T = t; break;
111+ case 0x23: /* NIP2 */ t=T2; SET(4,-2) T2_(t) break;
112+ case 0x04: /* SWP */ t=T;n=N; SET(2, 0) T = n; N = t; break;
113+ case 0x24: /* SWP2 */ t=T2;n=N2; SET(4, 0) T2_(n) N2_(t) break;
114+ case 0x05: /* ROT */ t=T;n=N;l=L; SET(3, 0) T = l; N = t; L = n; break;
115+ case 0x25: /* ROT2 */ t=T2;n=N2;l=L2; SET(6, 0) T2_(l) N2_(t) L2_(n) break;
116+ case 0x06: /* DUP */ t=T; SET(1, 1) T = t; N = t; break;
117+ case 0x26: /* DUP2 */ t=T2; SET(2, 2) T2_(t) N2_(t) break;
118+ case 0x07: /* OVR */ t=T;n=N; SET(2, 1) T = n; N = t; L = n; break;
119+ case 0x27: /* OVR2 */ t=T2;n=N2; SET(4, 2) T2_(n) N2_(t) L2_(n) break;
120+ case 0x08: /* EQU */ t=T;n=N; SET(2,-1) T = n == t; break;
121+ case 0x28: /* EQU2 */ t=T2;n=N2; SET(4,-3) T = n == t; break;
122+ case 0x09: /* NEQ */ t=T;n=N; SET(2,-1) T = n != t; break;
123+ case 0x29: /* NEQ2 */ t=T2;n=N2; SET(4,-3) T = n != t; break;
124+ case 0x0a: /* GTH */ t=T;n=N; SET(2,-1) T = n > t; break;
125+ case 0x2a: /* GTH2 */ t=T2;n=N2; SET(4,-3) T = n > t; break;
126+ case 0x0b: /* LTH */ t=T;n=N; SET(2,-1) T = n < t; break;
127+ case 0x2b: /* LTH2 */ t=T2;n=N2; SET(4,-3) T = n < t; break;
128+ case 0x0c: /* JMP */ t=T; SET(1,-1) pc += (Sint8)t; break;
129+ case 0x2c: /* JMP2 */ t=T2; SET(2,-2) pc = t; break;
130+ case 0x0d: /* JCN */ t=T;n=N; SET(2,-2) if(n) pc += (Sint8)t; break;
131+ case 0x2d: /* JCN2 */ t=T2;n=L; SET(3,-3) if(n) pc = t; break;
132+ case 0x0e: /* JSR */ t=T; SET(1,-1) FLIP SHIFT(2) T2_(pc) pc += (Sint8)t; break;
133+ case 0x2e: /* JSR2 */ t=T2; SET(2,-2) FLIP SHIFT(2) T2_(pc) pc = t; break;
134+ case 0x0f: /* STH */ t=T; SET(1,-1) FLIP SHIFT(1) T = t; break;
135+ case 0x2f: /* STH2 */ t=T2; SET(2,-2) FLIP SHIFT(2) T2_(t) break;
136+ case 0x10: /* LDZ */ t=T; SET(1, 0) T = ram[t]; break;
137+ case 0x30: /* LDZ2 */ t=T; SET(1, 1) N = ram[t++]; T = ram[(Uint8)t]; break;
138+ case 0x11: /* STZ */ t=T;n=N; SET(2,-2) ram[t] = n; break;
139+ case 0x31: /* STZ2 */ t=T;n=H2; SET(3,-3) ram[t++] = n >> 8; ram[(Uint8)t] = n; break;
140+ case 0x12: /* LDR */ t=T; SET(1, 0) r = pc + (Sint8)t; T = ram[r]; break;
141+ case 0x32: /* LDR2 */ t=T; SET(1, 1) r = pc + (Sint8)t; N = ram[r++]; T = ram[r]; break;
142+ case 0x13: /* STR */ t=T;n=N; SET(2,-2) r = pc + (Sint8)t; ram[r] = n; break;
143+ case 0x33: /* STR2 */ t=T;n=H2; SET(3,-3) r = pc + (Sint8)t; ram[r++] = n >> 8; ram[r] = n; break;
144+ case 0x14: /* LDA */ t=T2; SET(2,-1) T = ram[t]; break;
145+ case 0x34: /* LDA2 */ t=T2; SET(2, 0) N = ram[t++]; T = ram[t]; break;
146+ case 0x15: /* STA */ t=T2;n=L; SET(3,-3) ram[t] = n; break;
147+ case 0x35: /* STA2 */ t=T2;n=N2; SET(4,-4) ram[t++] = n >> 8; ram[t] = n; break;
148+ case 0x16: /* DEI */ t=T; SET(1, 0) T = emu_dei(u, t); break;
149+ case 0x36: /* DEI2 */ t=T; SET(1, 1) N = emu_dei(u, t++); T = emu_dei(u, t); break;
150+ case 0x17: /* DEO */ t=T;n=N; SET(2,-2) emu_deo(u, t, n); break;
151+ case 0x37: /* DEO2 */ t=T;n=N;l=L; SET(3,-3) emu_deo(u, t++, l); emu_deo(u, t, n); break;
152+ case 0x18: /* ADD */ t=T;n=N; SET(2,-1) T = n + t; break;
153+ case 0x38: /* ADD2 */ t=T2;n=N2; SET(4,-2) T2_(n + t) break;
154+ case 0x19: /* SUB */ t=T;n=N; SET(2,-1) T = n - t; break;
155+ case 0x39: /* SUB2 */ t=T2;n=N2; SET(4,-2) T2_(n - t) break;
156+ case 0x1a: /* MUL */ t=T;n=N; SET(2,-1) T = n * t; break;
157+ case 0x3a: /* MUL2 */ t=T2;n=N2; SET(4,-2) T2_(n * t) break;
158+ case 0x1b: /* DIV */ t=T;n=N; SET(2,-1) T = t ? n / t : 0; break;
159+ case 0x3b: /* DIV2 */ t=T2;n=N2; SET(4,-2) T2_(t ? n / t : 0) break;
160+ case 0x1c: /* AND */ t=T;n=N; SET(2,-1) T = n & t; break;
161+ case 0x3c: /* AND2 */ t=T2;n=N2; SET(4,-2) T2_(n & t) break;
162+ case 0x1d: /* ORA */ t=T;n=N; SET(2,-1) T = n | t; break;
163+ case 0x3d: /* ORA2 */ t=T2;n=N2; SET(4,-2) T2_(n | t) break;
164+ case 0x1e: /* EOR */ t=T;n=N; SET(2,-1) T = n ^ t; break;
165+ case 0x3e: /* EOR2 */ t=T2;n=N2; SET(4,-2) T2_(n ^ t) break;
166+ case 0x1f: /* SFT */ t=T;n=N; SET(2,-1) T = n >> (t & 0xf) << (t >> 4); break;
167+ case 0x3f: /* SFT2 */ t=T;n=H2; SET(3,-1) T2_(n >> (t & 0xf) << (t >> 4)) break;
168 }
169 }
170 }
+17,
-19
1@@ -202,16 +202,6 @@ emu_event(Uxn *u)
2 }
3 }
4
5-static int
6-emu_init(void)
7-{
8- display = XOpenDisplay(NULL);
9- if(!display)
10- return system_error("X11", "Could not open display");
11- screen_resize(WIDTH, HEIGHT, 1);
12- return 1;
13-}
14-
15 static int
16 emu_run(Uxn *u, char *rom)
17 {
18@@ -274,16 +264,24 @@ main(int argc, char **argv)
19 {
20 Uxn u = {0};
21 int i = 1;
22- if(i == argc)
23- return system_error("usage", "uxn11 [-v] file.rom [args...]");
24- /* Read flags */
25- if(argv[i][0] == '-' && argv[i][1] == 'v')
26- return system_version("Uxn11 - Graphical Varvara Emulator", "18 Nov 2023");
27- if(!emu_init())
28- return system_error("Init", "Failed to initialize varvara.");
29- if(!system_init(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++]))
30- return system_error("Init", "Failed to initialize uxn.");
31+ if(i == argc) {
32+ fprintf(stdout, "usage: %s [-v] file.rom [args..]\n", argv[0]);
33+ return 0;
34+ }
35+ if(argv[i][0] == '-' && argv[i][1] == 'v') {
36+ fprintf(stdout, "Uxn11 - Varvara Emulator, 15 Jan 2023.\n");
37+ i++;
38+ }
39+ if(!(display = XOpenDisplay(NULL))) {
40+ fprintf(stdout, "Could not open display.\n");
41+ return 0;
42+ }
43+ if(!system_boot(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++])) {
44+ fprintf(stdout, "Could not boot.\n");
45+ return 0;
46+ }
47 /* Game Loop */
48+ screen_resize(WIDTH, HEIGHT, 1);
49 u.dev[0x17] = argc - i;
50 if(uxn_eval(&u, PAGE_PROGRAM)) {
51 console_listen(&u, i, argc, argv);
+1,
-1
1@@ -72,7 +72,7 @@ main(int argc, char **argv)
2 /* Read flags */
3 if(argv[i][0] == '-' && argv[i][1] == 'v')
4 return system_version("Uxncli - Console Varvara Emulator", "11 Nov 2023");
5- if(!system_init(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++]))
6+ if(!system_boot(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++]))
7 return system_error("Init", "Failed to initialize uxn.");
8 /* Game Loop */
9 u.dev[0x17] = argc - i;