From 874ae39b6074da2778b72bcbaf6c7c7ef19aa233 Mon Sep 17 00:00:00 2001 From: Bad Diode Date: Wed, 30 Aug 2023 20:31:08 +0200 Subject: Remove previous uxn core --- src/uxn.c | 117 -------------------------------------------------------------- 1 file changed, 117 deletions(-) delete mode 100644 src/uxn.c (limited to 'src/uxn.c') diff --git a/src/uxn.c b/src/uxn.c deleted file mode 100644 index d525ff1..0000000 --- a/src/uxn.c +++ /dev/null @@ -1,117 +0,0 @@ -#include "uxn.h" - -/* -Copyright (u) 2022-2023 Devine Lu Linvega, Andrew Alderwick, Andrew Richards - -Permission to use, copy, modify, and distribute this software for any -purpose with or without fee is hereby granted, provided that the above -copyright notice and this permission notice appear in all copies. - -THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES -WITH REGARD TO THIS SOFTWARE. -*/ - -#define T s->dat[s->ptr - 1] -#define N s->dat[s->ptr - 2] -#define L s->dat[s->ptr - 3] -#define H2 PEEK2(s->dat + s->ptr - 3) -#define T2 PEEK2(s->dat + s->ptr - 2) -#define N2 PEEK2(s->dat + s->ptr - 4) -#define L2 PEEK2(s->dat + s->ptr - 6) - -/* Registers - -[ . ][ . ][ . ][ L ][ N ][ T ] < -[ . ][ . ][ . ][ H2 ][ T ] < -[ L2 ][ N2 ][ T2 ] < - -*/ - - -u16 deo_mask[] = {0xff08, 0x0300, 0xc028, 0x8000, 0x8000, 0x8000, 0x8000, 0x0000, 0x0000, 0x0000, 0xa260, 0xa260, 0x0000, 0x0000, 0x0000, 0x0000}; -u16 dei_mask[] = {0x0000, 0x0000, 0x003c, 0x0014, 0x0014, 0x0014, 0x0014, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x07ff, 0x0000, 0x0000, 0x0000}; - -#define POKE2(d, v) { (d)[0] = (v) >> 8; (d)[1] = (v); } -#define PEEK2(d) ((d)[0] << 8 | (d)[1]) -#define HALT(c) { return uxn_halt(u, ins, (c), pc - 1); } -#define SET(mul, add) { if(mul > s->ptr) HALT(1) tmp = s->ptr + k * mul + add; if(tmp > 254) HALT(2) s->ptr = tmp; } -#define PUT(o, v) { s->dat[(u8)(s->ptr - 1 - (o))] = (v); } -#define PUT2(o, v) { tmp = (v); s->dat[(u8)(s->ptr - o - 2)] = tmp >> 8; s->dat[(u8)(s->ptr - o - 1)] = tmp; } -#define PUSH(stack, v) { if(s->ptr > 254) HALT(2) stack->dat[stack->ptr++] = (v); } -#define PUSH2(stack, v) { if(s->ptr > 253) HALT(2) tmp = (v); stack->dat[stack->ptr] = tmp >> 8; stack->dat[stack->ptr + 1] = tmp; stack->ptr += 2; } -#define DEO(a, b) { u->dev[(a)] = (b); if((deo_mask[(a) >> 4] >> ((a) & 0xf)) & 0x1) uxn_deo(u, (a)); } -#define DEI(a, b) { PUT((a), ((dei_mask[(b) >> 4] >> ((b) & 0xf)) & 0x1) ? uxn_dei(u, (b)) : u->dev[(b)]) } - -IWRAM_CODE -int -uxn_eval(Uxn *u, u16 pc) { - u8 ins, opc, k; - u16 t, n, l, tmp; - Stack *s; - if(!pc || u->dev[0x0f]) return 0; - for(;;) { - ins = u->ram[pc++]; - k = !!(ins & 0x80); - s = ins & 0x40 ? u->rst : u->wst; - opc = !(ins & 0x1f) ? 0 - (ins >> 5) : ins & 0x3f; - switch(opc) { - /* IMM */ - case 0x00: /* BRK */ return 1; - case 0xff: /* JCI */ pc += !!s->dat[--s->ptr] * PEEK2(u->ram + pc) + 2; break; - case 0xfe: /* JMI */ pc += PEEK2(u->ram + pc) + 2; break; - case 0xfd: /* JSI */ PUSH2(u->rst, pc + 2) pc += PEEK2(u->ram + pc) + 2; break; - case 0xfc: /* LIT */ PUSH(s, u->ram[pc++]) break; - case 0xfb: /* LIT2 */ PUSH2(s, PEEK2(u->ram + pc)) pc += 2; break; - case 0xfa: /* LITr */ PUSH(s, u->ram[pc++]) break; - case 0xf9: /* LIT2r */ PUSH2(s, PEEK2(u->ram + pc)) pc += 2; break; - /* ALU */ - case 0x01: /* INC */ t=T; SET(1, 0) PUT(0, t + 1) break; case 0x21: t=T2; SET(2, 0) PUT2(0, t + 1) break; - case 0x02: /* POP */ SET(1,-1) break; case 0x22: SET(2,-2) break; - case 0x03: /* NIP */ t=T; SET(2,-1) PUT(0, t) break; case 0x23: t=T2; SET(4,-2) PUT2(0, t) break; - case 0x04: /* SWP */ t=T;n=N; SET(2, 0) PUT(0, n) PUT(1, t) break; case 0x24: t=T2;n=N2; SET(4, 0) PUT2(0, n) PUT2(2, t) break; - case 0x05: /* ROT */ t=T;n=N;l=L; SET(3, 0) PUT(0, l) PUT(1, t) PUT(2, n) break; case 0x25: t=T2;n=N2;l=L2; SET(6, 0) PUT2(0, l) PUT2(2, t) PUT2(4, n) break; - case 0x06: /* DUP */ t=T; SET(1, 1) PUT(0, t) PUT(1, t) break; case 0x26: t=T2; SET(2, 2) PUT2(0, t) PUT2(2, t) break; - case 0x07: /* OVR */ t=T;n=N; SET(2, 1) PUT(0, n) PUT(1, t) PUT(2, n) break; case 0x27: t=T2;n=N2; SET(4, 2) PUT2(0, n) PUT2(2, t) PUT2(4, n) break; - case 0x08: /* EQU */ t=T;n=N; SET(2,-1) PUT(0, n == t) break; case 0x28: t=T2;n=N2; SET(4,-3) PUT(0, n == t) break; - case 0x09: /* NEQ */ t=T;n=N; SET(2,-1) PUT(0, n != t) break; case 0x29: t=T2;n=N2; SET(4,-3) PUT(0, n != t) break; - case 0x0a: /* GTH */ t=T;n=N; SET(2,-1) PUT(0, n > t) break; case 0x2a: t=T2;n=N2; SET(4,-3) PUT(0, n > t) break; - case 0x0b: /* LTH */ t=T;n=N; SET(2,-1) PUT(0, n < t) break; case 0x2b: t=T2;n=N2; SET(4,-3) PUT(0, n < t) break; - case 0x0c: /* JMP */ t=T; SET(1,-1) pc += (s8)t; break; case 0x2c: t=T2; SET(2,-2) pc = t; break; - case 0x0d: /* JCN */ t=T;n=N; SET(2,-2) pc += !!n * (s8)t; break; case 0x2d: t=T2;n=L; SET(3,-3) if(n) pc = t; break; - case 0x0e: /* JSR */ t=T; SET(1,-1) PUSH2(u->rst, pc) pc += (s8)t; break; case 0x2e: t=T2; SET(2,-2) PUSH2(u->rst, pc) pc = t; break; - case 0x0f: /* STH */ t=T; SET(1,-1) PUSH((ins & 0x40 ? u->wst : u->rst), t) break; case 0x2f: t=T2; SET(2,-2) PUSH2((ins & 0x40 ? u->wst : u->rst), t) break; - case 0x10: /* LDZ */ t=T; SET(1, 0) PUT(0, u->ram[t]) break; case 0x30: t=T; SET(1, 1) PUT2(0, PEEK2(u->ram + t)) break; - case 0x11: /* STZ */ t=T;n=N; SET(2,-2) u->ram[t] = n; break; case 0x31: t=T;n=H2; SET(3,-3) POKE2(u->ram + t, n) break; - case 0x12: /* LDR */ t=T; SET(1, 0) PUT(0, u->ram[pc + (s8)t]) break; case 0x32: t=T; SET(1, 1) PUT2(0, PEEK2(u->ram + pc + (s8)t)) break; - case 0x13: /* STR */ t=T;n=N; SET(2,-2) u->ram[pc + (s8)t] = n; break; case 0x33: t=T;n=H2; SET(3,-3) POKE2(u->ram + pc + (s8)t, n) break; - case 0x14: /* LDA */ t=T2; SET(2,-1) PUT(0, u->ram[t]) break; case 0x34: t=T2; SET(2, 0) PUT2(0, PEEK2(u->ram + t)) break; - case 0x15: /* STA */ t=T2;n=L; SET(3,-3) u->ram[t] = n; break; case 0x35: t=T2;n=N2; SET(4,-4) POKE2(u->ram + t, n) break; - case 0x16: /* DEI */ t=T; SET(1, 0) DEI(0, t) break; case 0x36: t=T; SET(1, 1) DEI(1, t) DEI(0, t + 1) break; - case 0x17: /* DEO */ t=T;n=N; SET(2,-2) DEO(t, n) break; case 0x37: t=T;n=N;l=L; SET(3,-3) DEO(t, l) DEO(t + 1, n) break; - case 0x18: /* ADD */ t=T;n=N; SET(2,-1) PUT(0, n + t) break; case 0x38: t=T2;n=N2; SET(4,-2) PUT2(0, n + t) break; - case 0x19: /* SUB */ t=T;n=N; SET(2,-1) PUT(0, n - t) break; case 0x39: t=T2;n=N2; SET(4,-2) PUT2(0, n - t) break; - case 0x1a: /* MUL */ t=T;n=N; SET(2,-1) PUT(0, n * t) break; case 0x3a: t=T2;n=N2; SET(4,-2) PUT2(0, n * t) break; - case 0x1b: /* DIV */ t=T;n=N; SET(2,-1) PUT(0, n / t) break; case 0x3b: t=T2;n=N2; SET(4,-2) PUT2(0, n / t) break; - case 0x1c: /* AND */ t=T;n=N; SET(2,-1) PUT(0, n & t) break; case 0x3c: t=T2;n=N2; SET(4,-2) PUT2(0, n & t) break; - case 0x1d: /* ORA */ t=T;n=N; SET(2,-1) PUT(0, n | t) break; case 0x3d: t=T2;n=N2; SET(4,-2) PUT2(0, n | t) break; - case 0x1e: /* EOR */ t=T;n=N; SET(2,-1) PUT(0, n ^ t) break; case 0x3e: t=T2;n=N2; SET(4,-2) PUT2(0, n ^ t) break; - case 0x1f: /* SFT */ t=T;n=N; SET(2,-1) PUT(0, n >> (t & 0xf) << (t >> 4)) break; case 0x3f: t=T;n=H2; SET(3,-1) PUT2(0, n >> (t & 0xf) << (t >> 4)) break; - } - } -} - -int -uxn_boot(Uxn *u, u8 *ram, Dei *dei, Deo *deo) -{ - u32 i; - char *cptr = (char *)u; - for(i = 0; i < sizeof(*u); i++) - cptr[i] = 0x00; - u->wst = (Stack *)(ram + 0x10000); - u->rst = (Stack *)(ram + 0x10100); - u->dev = (u8 *)(ram + 0x10200); - u->ram = ram; - u->dei = dei; - u->deo = deo; - return 1; -} -- cgit v1.2.1