From 3a901ed0beeaf5e3268a40779f2944ef99f93774 Mon Sep 17 00:00:00 2001 From: Devine Lu Linvega Date: Mon, 12 Aug 2024 13:11:42 -0700 Subject: [PATCH] (uxn.c) Removed need for stack pointer --- src/uxn.c | 110 ++++++++++++++++++++++++++------------------------- src/uxncli.c | 2 +- src/uxnemu.c | 2 +- 3 files changed, 58 insertions(+), 56 deletions(-) diff --git a/src/uxn.c b/src/uxn.c index 8eed185..13a2877 100644 --- a/src/uxn.c +++ b/src/uxn.c @@ -11,29 +11,32 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE. */ -#define OPC(opc, body) {\ - case 0x00|opc: {enum{_2=0,_r=0}; s = &uxn.wst, sp = &uxn.wst.ptr; body break;}\ - case 0x20|opc: {enum{_2=1,_r=0}; s = &uxn.wst, sp = &uxn.wst.ptr; body break;}\ - case 0x40|opc: {enum{_2=0,_r=1}; s = &uxn.rst, sp = &uxn.rst.ptr; body break;}\ - case 0x60|opc: {enum{_2=1,_r=1}; s = &uxn.rst, sp = &uxn.rst.ptr; body break;}\ - case 0x80|opc: {enum{_2=0,_r=0}; s = &uxn.wst, kp = uxn.wst.ptr, sp = &kp; body break;}\ - case 0xa0|opc: {enum{_2=1,_r=0}; s = &uxn.wst, kp = uxn.wst.ptr, sp = &kp; body break;}\ - case 0xc0|opc: {enum{_2=0,_r=1}; s = &uxn.rst, kp = uxn.rst.ptr, sp = &kp; body break;}\ - case 0xe0|opc: {enum{_2=1,_r=1}; s = &uxn.rst, kp = uxn.rst.ptr, sp = &kp; body break;}\ +#define OPC(opc, init, body) {\ + 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;}\ } /* Microcode */ -#define FLP { s = _r ? &uxn.wst : &uxn.rst; } +#define INC(s) uxn.s.dat[uxn.s.ptr++] +#define DEC(s) uxn.s.dat[--uxn.s.ptr] #define JMI { pc += uxn.ram[pc++] << 8 | uxn.ram[pc++]; } #define JMP(x) { if(_2) pc = (x); else pc += (Sint8)(x); } #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 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 PU1(y) { s->dat[s->ptr++] = (y); } #define PU2(y) { tt = (y); PU1(tt >> 8) PU1(tt) } -#define IMM(x, y) { uxn.x.dat[uxn.x.ptr++] = (y); } +#define PU1(y) { if(_r) INC(rst) = y; else INC(wst) = y; } +#define PFx(y) { if(_2) { PF2(y) } else PF1(y) } +#define PF2(y) { tt = (y); PF1(tt >> 8) PF1(tt) } +#define PF1(y) { if(_r) INC(wst) = y; else INC(rst) = y; } #define DEI(p, o) { 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)]; } @@ -42,52 +45,51 @@ WITH REGARD TO THIS SOFTWARE. int uxn_eval(Uint16 pc) { - int a,b,c; - Uint8 t, kp, *sp; + int a,b,c,k; + Uint8 t; Uint16 tt; - Stack *s; if(!pc || uxn.dev[0x0f]) return 0; for(;;) { switch(uxn.ram[pc++]) { /* BRK */ case 0x00: return 1; - /* JCI */ case 0x20: if(uxn.wst.dat[--uxn.wst.ptr]) { JMI break; } pc += 2; break; + /* JCI */ case 0x20: if(DEC(wst)) { JMI break; } pc += 2; break; /* JMI */ case 0x40: JMI break; - /* JSI */ case 0x60: tt = pc + 2; IMM(rst, tt >> 8) IMM(rst, tt) JMI break; - /* LI2 */ case 0xa0: IMM(wst, uxn.ram[pc++]) - /* LIT */ case 0x80: IMM(wst, uxn.ram[pc++]) break; - /* L2r */ case 0xe0: IMM(rst, uxn.ram[pc++]) - /* LIr */ case 0xc0: IMM(rst, uxn.ram[pc++]) break; - /* INC */ OPC(0x01, POx(a) PUx(a + 1)) - /* POP */ OPC(0x02, POx(a)) - /* NIP */ OPC(0x03, POx(a) POx(b) PUx(a)) - /* SWP */ OPC(0x04, POx(a) POx(b) PUx(a) PUx(b)) - /* ROT */ OPC(0x05, POx(a) POx(b) POx(c) PUx(b) PUx(a) PUx(c)) - /* DUP */ OPC(0x06, POx(a) PUx(a) PUx(a)) - /* OVR */ OPC(0x07, POx(a) POx(b) PUx(b) PUx(a) PUx(b)) - /* 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)) - /* JCN */ OPC(0x0d, POx(a) PO1(b) if(b) JMP(a)) - /* JSR */ OPC(0x0e, POx(a) FLP PU2(pc) JMP(a)) - /* STH */ OPC(0x0f, POx(a) FLP PUx(a)) - /* LDZ */ OPC(0x10, PO1(a) PEK(b, a, t) PUx(b)) - /* STZ */ OPC(0x11, PO1(a) POx(b) POK(a, b, t)) - /* LDR */ OPC(0x12, PO1(a) PEK(b, pc + (Sint8)a, tt) PUx(b)) - /* STR */ OPC(0x13, PO1(a) POx(b) POK(pc + (Sint8)a, b, tt)) - /* LDA */ OPC(0x14, PO2(a) PEK(b, a, tt) PUx(b)) - /* STA */ OPC(0x15, PO2(a) POx(b) POK(a, b, tt)) - /* DEI */ OPC(0x16, PO1(a) DEI(a, b) PUx(b)) - /* DEO */ OPC(0x17, PO1(a) POx(b) DEO(a, b)) - /* 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))) + /* 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; + /* INC */ OPC(0x01, POx(a), PUx(a + 1)) + /* POP */ OPC(0x02, POx(a), 0) + /* NIP */ OPC(0x03, POx(a) POx(b), PUx(a)) + /* SWP */ OPC(0x04, POx(a) POx(b), PUx(a) PUx(b)) + /* ROT */ OPC(0x05, POx(a) POx(b) POx(c), PUx(b) PUx(a) PUx(c)) + /* DUP */ OPC(0x06, POx(a), PUx(a) PUx(a)) + /* OVR */ OPC(0x07, POx(a) POx(b), PUx(b) PUx(a) PUx(b)) + /* 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)) + /* JCN */ OPC(0x0d, POx(a) PO1(b), if(b) JMP(a)) + /* JSR */ OPC(0x0e, POx(a), PF2(pc) JMP(a)) + /* STH */ OPC(0x0f, POx(a), PFx(a)) + /* LDZ */ OPC(0x10, PO1(a), PEK(b, a, t) PUx(b)) + /* STZ */ OPC(0x11, PO1(a) POx(b), POK(a, b, t)) + /* LDR */ OPC(0x12, PO1(a), PEK(b, pc + (Sint8)a, tt) PUx(b)) + /* STR */ OPC(0x13, PO1(a) POx(b), POK(pc + (Sint8)a, b, tt)) + /* LDA */ OPC(0x14, PO2(a), PEK(b, a, tt) PUx(b)) + /* STA */ OPC(0x15, PO2(a) POx(b), POK(a, b, tt)) + /* DEI */ OPC(0x16, PO1(a), DEI(a, b) PUx(b)) + /* DEO */ OPC(0x17, PO1(a) POx(b), DEO(a, b)) + /* 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))) } } } diff --git a/src/uxncli.c b/src/uxncli.c index 710bd99..8b943c6 100644 --- a/src/uxncli.c +++ b/src/uxncli.c @@ -68,7 +68,7 @@ main(int argc, char **argv) int i = 1; char *rom; if(i != argc && argv[i][0] == '-' && argv[i][1] == 'v') { - fprintf(stdout, "Uxncli - Console Varvara Emulator, 11 Aug 2024.\n"); + fprintf(stdout, "Uxncli - Console Varvara Emulator, 12 Aug 2024.\n"); i++; } rom = i == argc ? "boot.rom" : argv[i++]; diff --git a/src/uxnemu.c b/src/uxnemu.c index b092b84..ef5b0e8 100644 --- a/src/uxnemu.c +++ b/src/uxnemu.c @@ -466,7 +466,7 @@ main(int argc, char **argv) /* flags */ if(argc > 1 && argv[i][0] == '-') { if(!strcmp(argv[i], "-v")) - return system_error("Uxnemu - Varvara Emulator(GUI)", "11 Aug 2024."); + return system_error("Uxnemu - Varvara Emulator(GUI)", "12 Aug 2024."); else if(!strcmp(argv[i], "-2x")) set_zoom(2, 0); else if(!strcmp(argv[i], "-3x"))