2022-03-26 21:32:46 -04:00
|
|
|
#include "uxn.h"
|
|
|
|
|
|
|
|
/*
|
2024-07-01 20:42:36 -04:00
|
|
|
Copyright (u) 2022-2024 Devine Lu Linvega, Andrew Alderwick, Andrew Richards
|
2022-03-26 21:32:46 -04:00
|
|
|
|
|
|
|
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.
|
|
|
|
*/
|
|
|
|
|
2024-08-12 10:41:22 -04:00
|
|
|
#define OPC(opc, init, body) {\
|
2024-08-13 14:04:04 -04:00
|
|
|
case 0x00|opc: {enum{_2=0,_r=0};init;body;} break;\
|
|
|
|
case 0x20|opc: {enum{_2=1,_r=0};init;body;} break;\
|
|
|
|
case 0x40|opc: {enum{_2=0,_r=1};init;body;} break;\
|
|
|
|
case 0x60|opc: {enum{_2=1,_r=1};init;body;} break;\
|
|
|
|
case 0x80|opc: {enum{_2=0,_r=0};k=uxn.wst.ptr;init;uxn.wst.ptr= k;body;} break;\
|
|
|
|
case 0xa0|opc: {enum{_2=1,_r=0};k=uxn.wst.ptr;init;uxn.wst.ptr= k;body;} break;\
|
|
|
|
case 0xc0|opc: {enum{_2=0,_r=1};k=uxn.rst.ptr;init;uxn.rst.ptr= k;body;} break;\
|
|
|
|
case 0xe0|opc: {enum{_2=1,_r=1};k=uxn.rst.ptr;init;uxn.rst.ptr= k;body;} break;\
|
2024-07-02 13:44:14 -04:00
|
|
|
}
|
|
|
|
|
2024-08-05 17:02:02 -04:00
|
|
|
/* Microcode */
|
|
|
|
|
2024-08-17 12:49:09 -04:00
|
|
|
#define JMI pc += uxn.ram[pc++] << 8 | uxn.ram[pc++];
|
|
|
|
#define JMP(j) if(_2) pc = (j); else pc += (Sint8)(j);
|
2024-08-12 12:33:47 -04:00
|
|
|
#define INC(s) uxn.s.dat[uxn.s.ptr++]
|
|
|
|
#define DEC(s) uxn.s.dat[--uxn.s.ptr]
|
2024-08-13 14:04:04 -04:00
|
|
|
#define POx(o) if(_2) { PO2(o) } else PO1(o)
|
|
|
|
#define PO2(o) if(_r) o = DEC(rst) | (DEC(rst) << 8); else o = DEC(wst) | (DEC(wst) << 8);
|
|
|
|
#define PO1(o) if(_r) o = DEC(rst); else o = DEC(wst);
|
|
|
|
#define PUx(y) if(_2) { PU2(y) } else PU1(y)
|
|
|
|
#define PU2(y) tt = (y); PU1(tt >> 8) PU1(tt)
|
|
|
|
#define PU1(y) if(_r) INC(rst) = y; else INC(wst) = y;
|
2024-08-17 13:01:01 -04:00
|
|
|
#define PUR(y) if(_r) INC(wst) = y; else INC(rst) = y;
|
2024-08-17 12:49:09 -04:00
|
|
|
#define GET(o,p) if(_2) PO1(p) PO1(o)
|
|
|
|
#define PUT(y,z) PU1(y) if(_2) PU1(z)
|
2024-08-17 13:01:01 -04:00
|
|
|
#define DEI(i,o,p) o =emu_dei(i); if(_2) p =emu_dei(i + 1);
|
2024-08-17 12:49:09 -04:00
|
|
|
#define DEO(i,y,z) emu_deo(i, y); if(_2) emu_deo(i + 1, z);
|
|
|
|
#define PEK(i,o,p,r) o = uxn.ram[i]; if(_2) r = i + 1, p = uxn.ram[r];
|
|
|
|
#define POK(i,y,z,r) uxn.ram[i] = y; if(_2) r = i + 1, uxn.ram[r] = z;
|
2024-08-16 23:13:41 -04:00
|
|
|
|
2022-03-26 21:32:46 -04:00
|
|
|
int
|
2024-06-29 15:35:34 -04:00
|
|
|
uxn_eval(Uint16 pc)
|
2022-03-26 21:32:46 -04:00
|
|
|
{
|
2024-08-16 23:13:41 -04:00
|
|
|
int a,b,c,d,e,f,k;
|
2024-08-12 10:50:57 -04:00
|
|
|
Uint8 t;
|
2024-08-05 18:06:05 -04:00
|
|
|
Uint16 tt;
|
2024-06-29 15:38:41 -04:00
|
|
|
if(!pc || uxn.dev[0x0f]) return 0;
|
2023-01-12 12:34:45 -05:00
|
|
|
for(;;) {
|
2024-07-02 13:44:14 -04:00
|
|
|
switch(uxn.ram[pc++]) {
|
2024-07-02 00:00:24 -04:00
|
|
|
/* BRK */ case 0x00: return 1;
|
2024-08-12 12:33:47 -04:00
|
|
|
/* JCI */ case 0x20: if(DEC(wst)) { JMI break; } pc += 2; break;
|
2024-07-02 00:31:09 -04:00
|
|
|
/* JMI */ case 0x40: JMI break;
|
2024-08-12 12:33:47 -04:00
|
|
|
/* JSI */ case 0x60: tt = pc + 2; INC(rst) = tt >> 8; INC(rst) = tt; JMI break;
|
|
|
|
/* LI2 */ case 0xa0: INC(wst) = uxn.ram[pc++];
|
|
|
|
/* LIT */ case 0x80: INC(wst) = uxn.ram[pc++]; break;
|
|
|
|
/* L2r */ case 0xe0: INC(rst) = uxn.ram[pc++];
|
|
|
|
/* LIr */ case 0xc0: INC(rst) = uxn.ram[pc++]; break;
|
2024-08-16 22:33:23 -04:00
|
|
|
/* INC */ OPC(0x01, POx(a),PUx(a + 1))
|
2024-08-16 23:13:41 -04:00
|
|
|
/* POP */ OPC(0x02, GET(a,b),0)
|
|
|
|
/* NIP */ OPC(0x03, GET(a,b) GET(c,d),PUT(a,b))
|
|
|
|
/* SWP */ OPC(0x04, GET(a,b) GET(c,d),PUT(a,b) PUT(c,d))
|
|
|
|
/* ROT */ OPC(0x05, GET(a,b) GET(c,d) GET(e,f),PUT(c,d) PUT(a,b) PUT(e,f))
|
|
|
|
/* DUP */ OPC(0x06, GET(a,b),PUT(a,b) PUT(a,b))
|
|
|
|
/* OVR */ OPC(0x07, GET(a,b) GET(c,d),PUT(c,d) PUT(a,b) PUT(c,d))
|
2024-08-16 22:33:23 -04:00
|
|
|
/* EQU */ OPC(0x08, POx(a) POx(b),PU1(b == a))
|
|
|
|
/* NEQ */ OPC(0x09, POx(a) POx(b),PU1(b != a))
|
|
|
|
/* GTH */ OPC(0x0a, POx(a) POx(b),PU1(b > a))
|
|
|
|
/* LTH */ OPC(0x0b, POx(a) POx(b),PU1(b < a))
|
|
|
|
/* JMP */ OPC(0x0c, POx(a),JMP(a))
|
2024-08-12 10:41:22 -04:00
|
|
|
/* JCN */ OPC(0x0d, POx(a) PO1(b), if(b) JMP(a))
|
2024-08-16 22:33:23 -04:00
|
|
|
/* JSR */ OPC(0x0e, POx(a),PF2(pc) JMP(a))
|
2024-08-17 13:01:01 -04:00
|
|
|
/* STH */ OPC(0x0f, GET(a,b),PUR(a) if(_2) PUR(b))
|
2024-08-17 12:49:09 -04:00
|
|
|
/* LDZ */ OPC(0x10, PO1(a),PEK(a,b,c,t) PUT(b,c))
|
|
|
|
/* STZ */ OPC(0x11, PO1(a) GET(b,c),POK(a,b,c,t))
|
|
|
|
/* LDR */ OPC(0x12, PO1(a),PEK(pc+(Sint8)a,b,c,tt) PUT(b,c))
|
|
|
|
/* STR */ OPC(0x13, PO1(a) GET(b,c),POK(pc+(Sint8)a,b,c,tt))
|
|
|
|
/* LDA */ OPC(0x14, PO2(a),PEK(a,b,c,tt) PUT(b,c))
|
|
|
|
/* STA */ OPC(0x15, PO2(a) GET(b,c),POK(a,b,c,tt))
|
|
|
|
/* DEI */ OPC(0x16, PO1(a),DEI(a,b,c) PUT(b,c))
|
|
|
|
/* DEO */ OPC(0x17, PO1(a) GET(b,c),DEO(a,b,c))
|
2024-08-16 22:33:23 -04:00
|
|
|
/* ADD */ OPC(0x18, POx(a) POx(b),PUx(b + a))
|
|
|
|
/* SUB */ OPC(0x19, POx(a) POx(b),PUx(b - a))
|
|
|
|
/* MUL */ OPC(0x1a, POx(a) POx(b),PUx(b * a))
|
|
|
|
/* DIV */ OPC(0x1b, POx(a) POx(b),PUx(a ? b / a : 0))
|
|
|
|
/* AND */ OPC(0x1c, POx(a) POx(b),PUx(b & a))
|
|
|
|
/* ORA */ OPC(0x1d, POx(a) POx(b),PUx(b | a))
|
|
|
|
/* EOR */ OPC(0x1e, POx(a) POx(b),PUx(b ^ a))
|
|
|
|
/* SFT */ OPC(0x1f, PO1(a) POx(b),PUx(b >> (a & 0xf) << (a >> 4)))
|
2024-07-01 20:42:36 -04:00
|
|
|
}
|
2023-04-10 15:29:26 -04:00
|
|
|
}
|
2022-03-26 21:32:46 -04:00
|
|
|
}
|