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(uxn.c) Housekeeping

This commit is contained in:
Devine Lu Linvega 2024-07-02 09:44:14 -08:00
parent 419ff65d83
commit 44c5e17aa2
1 changed files with 23 additions and 22 deletions
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45
src/uxn.c
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@ -11,40 +11,41 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE.
*/
#define JMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); }
#define POx(o) { if(m2) { PO2(o) } else PO1(o) }
#define PUx(y) { if(m2) { PU2(y) } else PU1(y) }
#define DEI(o, p) { if(m2) { o = (emu_dei(p) << 8) | emu_dei(p + 1); } else o = emu_dei(p); }
#define DEO(p, y) { if(m2) { emu_deo(p, y >> 8); emu_deo(p + 1, y); } else emu_deo(p, y); }
#define PEK(o, x, r) { if(m2) { r = (x); o = uxn.ram[r++] << 8 | uxn.ram[r]; } else o = uxn.ram[(x)]; }
#define POK(x, y, r) { if(m2) { r = (x); uxn.ram[r++] = y >> 8; uxn.ram[r] = y; } else uxn.ram[(x)] = (y); }
#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;}\
}
#define JMP(x) { if(_2) pc = (x); else pc += (Sint8)(x); }
#define POx(o) { if(_2) { PO2(o) } else PO1(o) }
#define PUx(y) { if(_2) { PU2(y) } else PU1(y) }
#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 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 PO1(o) { o = s->dat[--*sp]; }
#define PO2(o) { o = s->dat[--*sp] | (s->dat[--*sp] << 8); }
#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 FLP { s = _r ? &uxn.wst : &uxn.rst; }
#define IMM(x, y) { uxn.x.dat[uxn.x.ptr++] = (y); }
#define JMI { pc += uxn.ram[pc++] << 8 | uxn.ram[pc++]; }
#define FLP { s = ins & 0x40 ? &uxn.wst : &uxn.rst; }
#define OPC(opc, body) {\
case 0x00|opc: {int m2 = 0; Stack *s = &uxn.wst; Uint8 *sp = &uxn.wst.ptr; body break;}\
case 0x20|opc: {int m2 = 1; Stack *s = &uxn.wst; Uint8 *sp = &uxn.wst.ptr; body break;}\
case 0x40|opc: {int m2 = 0; Stack *s = &uxn.rst; Uint8 *sp = &uxn.rst.ptr; body break;}\
case 0x60|opc: {int m2 = 1; Stack *s = &uxn.rst; Uint8 *sp = &uxn.rst.ptr; body break;}\
case 0x80|opc: {int m2 = 0; Stack *s = &uxn.wst; Uint8 kp = uxn.wst.ptr, *sp = &kp; body break;}\
case 0xa0|opc: {int m2 = 1; Stack *s = &uxn.wst; Uint8 kp = uxn.wst.ptr, *sp = &kp; body break;}\
case 0xc0|opc: {int m2 = 0; Stack *s = &uxn.rst; Uint8 kp = uxn.rst.ptr, *sp = &kp; body break;}\
case 0xe0|opc: {int m2 = 1; Stack *s = &uxn.rst; Uint8 kp = uxn.rst.ptr, *sp = &kp; body break;}\
}
int
uxn_eval(Uint16 pc)
{
if(!pc || uxn.dev[0x0f]) return 0;
for(;;) {
Uint16 tt, a, b, c;
Uint8 t, ins = uxn.ram[pc++];
switch(ins) {
Uint8 t;
Uint16 tt;
switch(uxn.ram[pc++]) {
/* BRK */ case 0x00: return 1;
/* JCI */ case 0x20: if(uxn.wst.dat[--uxn.wst.ptr]) { JMI break; } pc += 2; break;
/* JMI */ case 0x40: JMI break;