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uxnmin

This commit is contained in:
Devine Lu Linvega 2024-07-02 16:21:31 -08:00
parent 6933357841
commit adb295fbb6
1 changed files with 67 additions and 52 deletions
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119
ref/uxnmin.c
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@ -15,6 +15,8 @@ typedef struct Uxn {
Uxn uxn; Uxn uxn;
/* I/O */
Uint8 Uint8
emu_dei(Uint8 addr) emu_dei(Uint8 addr)
{ {
@ -31,70 +33,83 @@ emu_deo(Uint8 addr, Uint8 value)
} }
} }
#define FLP { s = ins & 0x40 ? &uxn.wst : &uxn.rst; } /* Unroll */
#define OPC(opc, body) {\
case 0x00|opc: {int _2=0,_r=0,a,b,c; Stack *s = &uxn.wst; Uint8 *sp = &uxn.wst.ptr; body break;}\
case 0x20|opc: {int _2=1,_r=0,a,b,c; Stack *s = &uxn.wst; Uint8 *sp = &uxn.wst.ptr; body break;}\
case 0x40|opc: {int _2=0,_r=1,a,b,c; Stack *s = &uxn.rst; Uint8 *sp = &uxn.rst.ptr; body break;}\
case 0x60|opc: {int _2=1,_r=1,a,b,c; Stack *s = &uxn.rst; Uint8 *sp = &uxn.rst.ptr; body break;}\
case 0x80|opc: {int _2=0,_r=0,a,b,c; Stack *s = &uxn.wst; Uint8 kp = uxn.wst.ptr, *sp = &kp; body break;}\
case 0xa0|opc: {int _2=1,_r=0,a,b,c; Stack *s = &uxn.wst; Uint8 kp = uxn.wst.ptr, *sp = &kp; body break;}\
case 0xc0|opc: {int _2=0,_r=1,a,b,c; Stack *s = &uxn.rst; Uint8 kp = uxn.rst.ptr, *sp = &kp; body break;}\
case 0xe0|opc: {int _2=1,_r=1,a,b,c; Stack *s = &uxn.rst; Uint8 kp = uxn.rst.ptr, *sp = &kp; body break;}\
}
/* Microcode */
#define FLP { s = _r ? &uxn.wst : &uxn.rst; }
#define JMI { pc += uxn.ram[pc++] << 8 | uxn.ram[pc++]; }
#define JMP(x) { if(_2) pc = (x); else pc += (Sint8)(x); } #define JMP(x) { if(_2) pc = (x); else pc += (Sint8)(x); }
#define PO1(o) { o = s->dat[--*sp]; }
#define PO2(o) { o = s->dat[--*sp] | (s->dat[--*sp] << 0x8); }
#define POx(o) { if(_2) { PO2(o) } else PO1(o) } #define POx(o) { if(_2) { PO2(o) } else PO1(o) }
#define PO1(o) { o = s->dat[--*sp]; }
#define PO2(o) { o = s->dat[--*sp] | (s->dat[--*sp] << 8); }
#define PUx(y) { if(_2) { PU2(y) } else PU1(y) }
#define PU1(y) { s->dat[s->ptr++] = (y); } #define PU1(y) { s->dat[s->ptr++] = (y); }
#define PU2(y) { tt = (y); s->dat[s->ptr++] = tt >> 0x8; s->dat[s->ptr++] = tt; } #define PU2(y) { tt = (y); s->dat[s->ptr++] = tt >> 0x8; s->dat[s->ptr++] = tt; }
#define PUx(y) { if(_2) { PU2(y) } else PU1(y) } #define IMM(x, y) { uxn.x.dat[uxn.x.ptr++] = (y); }
#define PEK(o, x, r) { if(_2) { r = (x); o = uxn.ram[r++] << 8 | uxn.ram[r]; } else o = uxn.ram[(x)]; }
#define POK(x, y, r) { if(_2) { r = (x); uxn.ram[r++] = y >> 8; uxn.ram[r] = y; } else uxn.ram[(x)] = (y); }
#define DEI(o, p) { if(_2) { o = (emu_dei(p) << 8) | emu_dei(p + 1); } else o = emu_dei(p); } #define DEI(o, p) { if(_2) { o = (emu_dei(p) << 8) | emu_dei(p + 1); } else o = emu_dei(p); }
#define DEO(p, y) { if(_2) { emu_deo(p, y >> 8); emu_deo(p + 1, y); } else emu_deo(p, y); } #define DEO(p, y) { if(_2) { emu_deo(p, y >> 8); emu_deo(p + 1, y); } else emu_deo(p, y); }
#define PEK(o, x, r) { if(_2) { r = (x); o = uxn.ram[r++] << 8 | uxn.ram[r]; } else o = uxn.ram[(x)]; }
#define POK(x, y, r) { if(_2) { r = (x); uxn.ram[r++] = y >> 8; uxn.ram[r] = y; } else uxn.ram[(x)] = (y); }
int int
uxn_eval(Uint16 pc) uxn_eval(Uint16 pc)
{ {
if(!pc || uxn.dev[0x0f]) return 0; if(!pc || uxn.dev[0x0f]) return 0;
for(;;) { for(;;) {
Uint16 tt, a, b, c; Uint8 t;
Uint8 t, kp, *sp, ins = uxn.ram[pc++]; Uint16 tt;
/* 2 */ Uint8 _2 = ins & 0x20; switch(uxn.ram[pc++]) {
/* r */ Stack *s = ins & 0x40 ? &uxn.rst : &uxn.wst; /* BRK */ case 0x00: return 1;
/* k */ if(ins & 0x80) kp = s->ptr, sp = &kp; else sp = &s->ptr; /* JCI */ case 0x20: if(uxn.wst.dat[--uxn.wst.ptr]) { JMI break; } pc += 2; break;
switch(ins & 0x1f) { /* JMI */ case 0x40: JMI break;
case 0x00: /* JSI */ case 0x60: tt = pc + 2; IMM(rst, tt >> 8) IMM(rst, tt) JMI break;
switch(ins) { /* LI2 */ case 0xa0: IMM(wst, uxn.ram[pc++])
/* BRK */ case 0x00: return 1; /* LIT */ case 0x80: IMM(wst, uxn.ram[pc++]) break;
/* JCI */ case 0x20: PO1(b) if(b) { goto JMI; } pc += 2; break; /* L2r */ case 0xe0: IMM(rst, uxn.ram[pc++])
/* JMI */ case 0x40: JMI: pc += uxn.ram[pc++] << 8 | uxn.ram[pc++]; break; /* LIr */ case 0xc0: IMM(rst, uxn.ram[pc++]) break;
/* JSI */ case 0x60: PU2(pc + 2) goto JMI; /* INC */ OPC(0x01, POx(a) PUx(a + 1))
/* LI2 */ case 0xa0: case 0xe0: PU1(uxn.ram[pc++]) /* fall */ /* POP */ OPC(0x02, POx(a))
/* LIT */ case 0x80: case 0xc0: PU1(uxn.ram[pc++]) break; /* NIP */ OPC(0x03, POx(a) POx(b) PUx(a))
} break; /* SWP */ OPC(0x04, POx(a) POx(b) PUx(a) PUx(b))
/* INC */ case 0x01: POx(a) PUx(a + 1) break; /* ROT */ OPC(0x05, POx(a) POx(b) POx(c) PUx(b) PUx(a) PUx(c))
/* POP */ case 0x02: POx(a) break; /* DUP */ OPC(0x06, POx(a) PUx(a) PUx(a))
/* NIP */ case 0x03: POx(a) POx(b) PUx(a) break; /* OVR */ OPC(0x07, POx(a) POx(b) PUx(b) PUx(a) PUx(b))
/* SWP */ case 0x04: POx(a) POx(b) PUx(a) PUx(b) break; /* EQU */ OPC(0x08, POx(a) POx(b) PU1(b == a))
/* ROT */ case 0x05: POx(a) POx(b) POx(c) PUx(b) PUx(a) PUx(c) break; /* NEQ */ OPC(0x09, POx(a) POx(b) PU1(b != a))
/* DUP */ case 0x06: POx(a) PUx(a) PUx(a) break; /* GTH */ OPC(0x0a, POx(a) POx(b) PU1(b > a))
/* OVR */ case 0x07: POx(a) POx(b) PUx(b) PUx(a) PUx(b) break; /* LTH */ OPC(0x0b, POx(a) POx(b) PU1(b < a))
/* EQU */ case 0x08: POx(a) POx(b) PU1(b == a) break; /* JMP */ OPC(0x0c, POx(a) JMP(a))
/* NEQ */ case 0x09: POx(a) POx(b) PU1(b != a) break; /* JCN */ OPC(0x0d, POx(a) PO1(b) if(b) JMP(a))
/* GTH */ case 0x0a: POx(a) POx(b) PU1(b > a) break; /* JSR */ OPC(0x0e, POx(a) FLP PU2(pc) JMP(a))
/* LTH */ case 0x0b: POx(a) POx(b) PU1(b < a) break; /* STH */ OPC(0x0f, POx(a) FLP PUx(a))
/* JMP */ case 0x0c: POx(a) JMP(a) break; /* LDZ */ OPC(0x10, PO1(a) PEK(b, a, t) PUx(b))
/* JCN */ case 0x0d: POx(a) PO1(b) if(b) JMP(a) break; /* STZ */ OPC(0x11, PO1(a) POx(b) POK(a, b, t))
/* JSR */ case 0x0e: POx(a) FLP PU2(pc) JMP(a) break; /* LDR */ OPC(0x12, PO1(a) PEK(b, pc + (Sint8)a, tt) PUx(b))
/* STH */ case 0x0f: POx(a) FLP PUx(a) break; /* STR */ OPC(0x13, PO1(a) POx(b) POK(pc + (Sint8)a, b, tt))
/* LDZ */ case 0x10: PO1(a) PEK(b, a, t) PUx(b) break; /* LDA */ OPC(0x14, PO2(a) PEK(b, a, tt) PUx(b))
/* STZ */ case 0x11: PO1(a) POx(b) POK(a, b, t) break; /* STA */ OPC(0x15, PO2(a) POx(b) POK(a, b, tt))
/* LDR */ case 0x12: PO1(a) PEK(b, pc + (Sint8)a, tt) PUx(b) break; /* DEI */ OPC(0x16, PO1(a) DEI(b, a) PUx(b))
/* STR */ case 0x13: PO1(a) POx(b) POK(pc + (Sint8)a, b, tt) break; /* DEO */ OPC(0x17, PO1(a) POx(b) DEO(a, b))
/* LDA */ case 0x14: PO2(a) PEK(b, a, tt) PUx(b) break; /* ADD */ OPC(0x18, POx(a) POx(b) PUx(b + a))
/* STA */ case 0x15: PO2(a) POx(b) POK(a, b, tt) break; /* SUB */ OPC(0x19, POx(a) POx(b) PUx(b - a))
/* DEI */ case 0x16: PO1(a) DEI(b, a) PUx(b) break; /* MUL */ OPC(0x1a, POx(a) POx(b) PUx(b * a))
/* DEO */ case 0x17: PO1(a) POx(b) DEO(a, b) break; /* DIV */ OPC(0x1b, POx(a) POx(b) PUx(a ? b / a : 0))
/* ADD */ case 0x18: POx(a) POx(b) PUx(b + a) break; /* AND */ OPC(0x1c, POx(a) POx(b) PUx(b & a))
/* SUB */ case 0x19: POx(a) POx(b) PUx(b - a) break; /* ORA */ OPC(0x1d, POx(a) POx(b) PUx(b | a))
/* MUL */ case 0x1a: POx(a) POx(b) PUx(b * a) break; /* EOR */ OPC(0x1e, POx(a) POx(b) PUx(b ^ a))
/* DIV */ case 0x1b: POx(a) POx(b) PUx(a ? b / a : 0) break; /* SFT */ OPC(0x1f, PO1(a) POx(b) PUx(b >> (a & 0xf) << (a >> 4)))
/* AND */ case 0x1c: POx(a) POx(b) PUx(b & a) break;
/* ORA */ case 0x1d: POx(a) POx(b) PUx(b | a) break;
/* EOR */ case 0x1e: POx(a) POx(b) PUx(b ^ a) break;
/* SFT */ case 0x1f: PO1(a) POx(b) PUx(b >> (a & 0xf) << (a >> 4)) break;
} }
} }
} }