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Progress merging 8/16 opcodes

This commit is contained in:
neauoire 2021-08-29 17:36:17 -07:00
parent 38ae734021
commit 86bdb0ca83
1 changed files with 7 additions and 5 deletions
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12
src/uxn.c
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@ -26,6 +26,7 @@ static Uint16 (*pop8)(Stack *s);
static Uint16 (*pop)(Stack *s); static Uint16 (*pop)(Stack *s);
static void (*poke)(Uint8 *m, Uint16 a, Uint16 b); static void (*poke)(Uint8 *m, Uint16 a, Uint16 b);
static Uint16 (*peek)(Uint8 *m, Uint16 a); static Uint16 (*peek)(Uint8 *m, Uint16 a);
static Uint16 (*devr)(Device *d, Uint8 a);
static void push8(Stack *s, Uint16 a) { if(s->ptr == 0xff) { s->error = 2; return; } s->dat[s->ptr++] = a; } static void push8(Stack *s, Uint16 a) { if(s->ptr == 0xff) { s->error = 2; return; } s->dat[s->ptr++] = a; }
static Uint16 pop8_keep(Stack *s) { if(s->kptr == 0) { s->error = 1; return 0; } return s->dat[--s->kptr]; } static Uint16 pop8_keep(Stack *s) { if(s->kptr == 0) { s->error = 1; return 0; } return s->dat[--s->kptr]; }
@ -40,9 +41,9 @@ static void push16(Stack *s, Uint16 a) { push8(s, a >> 8); push8(s, a); }
static Uint16 pop16(Stack *s) { Uint8 a = pop8(s), b = pop8(s); return a + (b << 8); } static Uint16 pop16(Stack *s) { Uint8 a = pop8(s), b = pop8(s); return a + (b << 8); }
static void devw8(Device *d, Uint8 a, Uint8 b) { d->dat[a & 0xf] = b; d->talk(d, a & 0x0f, 1); } static void devw8(Device *d, Uint8 a, Uint8 b) { d->dat[a & 0xf] = b; d->talk(d, a & 0x0f, 1); }
static Uint8 devr8(Device *d, Uint8 a) { d->talk(d, a & 0x0f, 0); return d->dat[a & 0xf]; } static Uint16 devr8(Device *d, Uint8 a) { d->talk(d, a & 0x0f, 0); return d->dat[a & 0xf]; }
static void devw16(Device *d, Uint8 a, Uint16 b) { devw8(d, a, b >> 8); devw8(d, a + 1, b); } static void devw16(Device *d, Uint8 a, Uint16 b) { devw8(d, a, b >> 8); devw8(d, a + 1, b); }
static Uint16 devr16(Device *d, Uint16 a) { return (devr8(d, a) << 8) + devr8(d, a + 1); } static Uint16 devr16(Device *d, Uint8 a) { return (devr8(d, a) << 8) + devr8(d, a + 1); }
/* Stack */ /* Stack */
static void op_lit(Uxn *u) { push8(u->src, peek8(u->ram.dat, u->ram.ptr++)); } static void op_lit(Uxn *u) { push8(u->src, peek8(u->ram.dat, u->ram.ptr++)); }
@ -69,7 +70,7 @@ static void op_ldr(Uxn *u) { Uint8 a = pop8(u->src); push(u->src, peek(u->ram.da
static void op_str(Uxn *u) { Uint8 a = pop8(u->src); Uint8 b = pop(u->src); poke(u->ram.dat, u->ram.ptr + (Sint8)a, b); } static void op_str(Uxn *u) { Uint8 a = pop8(u->src); Uint8 b = pop(u->src); poke(u->ram.dat, u->ram.ptr + (Sint8)a, b); }
static void op_lda(Uxn *u) { Uint16 a = pop16(u->src); push(u->src, peek(u->ram.dat, a)); } static void op_lda(Uxn *u) { Uint16 a = pop16(u->src); push(u->src, peek(u->ram.dat, a)); }
static void op_sta(Uxn *u) { Uint16 a = pop16(u->src); Uint16 b = pop(u->src); poke(u->ram.dat, a, b); } static void op_sta(Uxn *u) { Uint16 a = pop16(u->src); Uint16 b = pop(u->src); poke(u->ram.dat, a, b); }
static void op_dei(Uxn *u) { Uint8 a = pop8(u->src); push8(u->src, devr8(&u->dev[a >> 4], a)); } static void op_dei(Uxn *u) { Uint8 a = pop8(u->src); push(u->src, devr(&u->dev[a >> 4], a)); }
static void op_deo(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); devw8(&u->dev[a >> 4], a, b); } static void op_deo(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); devw8(&u->dev[a >> 4], a, b); }
/* Arithmetic */ /* Arithmetic */
static void op_add(Uxn *u) { Uint16 a = pop(u->src), b = pop(u->src); push(u->src, b + a); } static void op_add(Uxn *u) { Uint16 a = pop(u->src), b = pop(u->src); push(u->src, b + a); }
@ -87,7 +88,6 @@ static void op_jmp16(Uxn *u) { u->ram.ptr = pop16(u->src); }
static void op_jnz16(Uxn *u) { Uint16 a = pop16(u->src); if(pop8(u->src)) u->ram.ptr = a; } static void op_jnz16(Uxn *u) { Uint16 a = pop16(u->src); if(pop8(u->src)) u->ram.ptr = a; }
static void op_jsr16(Uxn *u) { push16(u->dst, u->ram.ptr); u->ram.ptr = pop16(u->src); } static void op_jsr16(Uxn *u) { push16(u->dst, u->ram.ptr); u->ram.ptr = pop16(u->src); }
/* Memory(16-bits) */ /* Memory(16-bits) */
static void op_dei16(Uxn *u) { Uint8 a = pop8(u->src); push16(u->src, devr16(&u->dev[a >> 4], a)); }
static void op_deo16(Uxn *u) { Uint8 a = pop8(u->src); Uint16 b = pop16(u->src); devw16(&u->dev[a >> 4], a, b); } static void op_deo16(Uxn *u) { Uint8 a = pop8(u->src); Uint16 b = pop16(u->src); devw16(&u->dev[a >> 4], a, b); }
static void (*ops[])(Uxn *u) = { static void (*ops[])(Uxn *u) = {
@ -98,7 +98,7 @@ static void (*ops[])(Uxn *u) = {
/* 16-bit */ /* 16-bit */
op_lit16, op_inc, op_pop, op_dup, op_nip, op_swp, op_ovr, op_rot, op_lit16, op_inc, op_pop, op_dup, op_nip, op_swp, op_ovr, op_rot,
op_equ, op_neq, op_gth, op_lth, op_jmp16, op_jnz16, op_jsr16, op_sth, op_equ, op_neq, op_gth, op_lth, op_jmp16, op_jnz16, op_jsr16, op_sth,
op_ldz, op_stz, op_ldr, op_str, op_lda, op_sta, op_dei16, op_deo16, op_ldz, op_stz, op_ldr, op_str, op_lda, op_sta, op_dei, op_deo16,
op_add, op_sub, op_mul, op_div, op_and, op_ora, op_eor, op_sft op_add, op_sub, op_mul, op_div, op_and, op_ora, op_eor, op_sft
}; };
@ -136,11 +136,13 @@ uxn_eval(Uxn *u, Uint16 vec)
push = push16; push = push16;
peek = peek16; peek = peek16;
poke = poke16; poke = poke16;
devr = devr16;
} else { } else {
pop = pop8; pop = pop8;
push = push8; push = push8;
peek = peek8; peek = peek8;
poke = poke8; poke = poke8;
devr = devr8;
} }
(*ops[(instr & 0x1f) | ((instr & MODE_SHORT) >> 1)])(u); (*ops[(instr & 0x1f) | ((instr & MODE_SHORT) >> 1)])(u);
if(u->wst.error) if(u->wst.error)