d6
/
uxn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Faster CALL opcodes

This commit is contained in:
Devine Lu Linvega 2023-01-03 10:48:17 -08:00
parent 0e7137e016
commit 9b8cd748ad
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/uxn.c
View File

@ -48,10 +48,10 @@ uxn_eval(Uxn *u, Uint16 pc)
switch(instr & 0x1f) {
case 0x00:
/* Literals/Calls */
if(instr == 0x20) /* JMI */ { sp = &u->wst->ptr; PEEK16(a, pc) pc = a; }
else if(instr == 0x40) /* JCI */ { sp = &u->wst->ptr; src = u->wst; POP8(a) PEEK16(b, pc) pc = a ? (Uint16)b : pc + 2; }
else if(instr == 0x60) /* JSI */ { sp = &u->wst->ptr; PEEK16(a, pc) PUSH16(u->rst, pc + 2) pc = a; }
else if(bs) /* LIT2 */ { PEEK16(a, pc) PUSH16(src, a) pc = pc + 2; }
if(instr == 0x20) /* JMI */ { PEEK16(a, pc) pc = a; }
else if(instr == 0x40) /* JCI */ { sp = &u->wst->ptr; src = u->wst; POP8(a) if(a) { PEEK16(b, pc) pc = b; } else { pc += 2; } }
else if(instr == 0x60) /* JSI */ { PEEK16(a, pc) PUSH16(u->rst, pc + 2) pc = a; }
else if(bs) /* LIT2 */ { PEEK16(a, pc) PUSH16(src, a) pc += 2; }
else /* LITr */ { a = u->ram[pc++]; PUSH8(src, a) } break;
/* ALU */
case 0x01: /* INC */ POP(a) PUSH(src, a + 1) break;