forth'd : and ;

main
Clyne 1 month ago
parent fc05ba93f9
commit 9f2e4a21f2
Signed by: clyne
GPG Key ID: 3267C8EBF3F9AFC7

@ -61,21 +61,6 @@ register intptr_t ** pp asm("r15"); // pointer to ip
#define STASH asm("push %r12; push %r13; push %r14; push %r15")
#define RESTORE asm("pop %r15; pop %r14; pop %r13; pop %r12")
NAKED
void push(void)
{
*--sp = (intptr_t)*++pp;
NEXT;
}
NAKED
void sp_at(void)
{
sp = sp - 1;
*sp = (intptr_t)(sp + 1);
NEXT;
}
NAKED
void enter(void)
{
@ -90,15 +75,17 @@ void doexit(void)
pp = *rp++;
NEXT;
}
pp = 0;
}
intptr_t state = 0;
intptr_t *here = dict;
NAKED void dot(void);
NAKED void push(void) { *--sp = (intptr_t)*++pp; NEXT; }
NAKED void dup(void) { --sp; sp[0] = sp[1]; NEXT; }
NAKED void drop(void) { ++sp; NEXT; }
NAKED void swap(void) { tmp = sp[0]; sp[0] = sp[1]; sp[1] = tmp; NEXT; }
NAKED void rot(void) { tmp = sp[0]; sp[0] = sp[2]; sp[2] = sp[1]; sp[1] = tmp; NEXT; }
NAKED void add(void) { sp[1] += sp[0]; ++sp; NEXT; }
NAKED void sub(void) { sp[1] -= sp[0]; ++sp; NEXT; }
NAKED void mul(void) { sp[1] *= sp[0]; ++sp; NEXT; }
@ -108,20 +95,17 @@ NAKED void and(void) { sp[1] &= sp[0]; ++sp; NEXT; }
NAKED void or(void) { sp[1] |= sp[0]; ++sp; NEXT; }
NAKED void xor(void) { sp[1] ^= sp[0]; ++sp; NEXT; }
NAKED void peek(void) { *sp = *(intptr_t *)*sp; NEXT; }
NAKED void poke(void) { *(intptr_t *)sp[0] = sp[1]; sp -= 2; NEXT; }
NAKED void poke(void) { *(intptr_t *)sp[0] = sp[1]; sp += 2; NEXT; }
NAKED void cpeek(void) { *sp = *(char *)*sp; NEXT; }
NAKED void cpoke(void) { *(char *)sp[0] = sp[1]; sp -= 2; NEXT; }
NAKED void cpoke(void) { *(char *)sp[0] = (char)sp[1]; sp += 2; NEXT; }
NAKED void comp(void) { state = -1; NEXT; }
NAKED void intr(void) { state = 0; NEXT; }
NAKED void comma(void) { *here++ = *sp++; NEXT; }
NAKED void colon(void)
NAKED void compname(void)
{
static int ch;
tmp = (intptr_t)here++; // body
*here++ = (intptr_t)latest;
STASH;
for (;;) {
extern int getchar(void);
@ -133,25 +117,17 @@ NAKED void colon(void)
*(unsigned char *)here += 1;
((char *)here)[*(unsigned char *)here] = ch;
}
here = (intptr_t *)((intptr_t)here + *(unsigned char *)here);
RESTORE;
here += *(unsigned char *)here;
here = (intptr_t *)(((intptr_t)here + sizeof(intptr_t) - 1)
& ~(sizeof(intptr_t) - 1));
*(intptr_t *)tmp = (intptr_t)here;
*--sp = tmp;
state = -1;
NEXT;
}
//W(two, "2", &w_dup) LIT(2), FTH(dup), END
NAKED void dot(void);
W(dup, "dup", 0) sp_at, peek, END
N(dup, "dup", 0)
N(drop, "drop", &w_dup)
N(swap, "swap", &w_drop)
N(peek, "@", &w_swap)
N(rot, "rot", &w_swap)
N(peek, "@", &w_rot)
N(poke, "!", &w_peek)
N(cpeek, "c@", &w_poke)
N(cpoke, "c!", &w_cpeek)
@ -176,22 +152,29 @@ W(negate, "negate", &w_dot) LIT(-1), mul, END
W(invert, "invert", &w_negate) LIT(-1), xor, END
W(dec, "1-", &w_invert) LIT(1), sub, END
W(inc, "1+", &w_dec) LIT(1), add, END
N(colon, ":", &w_inc)
W(aligned, "aligned", &w_colon) LIT(sizeof(*sp) - 1), add, LIT(~(sizeof(*sp) - 1)), and, END
W(aligned, "aligned", &w_inc) LIT(sizeof(*sp) - 1), add, LIT(~(sizeof(*sp) - 1)), and, END
W(align, "align", &w_aligned) FTH(here), FTH(aligned), LIT(&here), poke, END
N(comma, ",", &w_align)
I(semic, ";", &w_comma) LIT(doexit), comma, LIT(&latest), poke, intr, END
W(colon, ":", &w_comma)
FTH(here), LIT(0), comma, FTH(latest), comma,
compname, FTH(align), dup, FTH(here), swap, poke, comp, END
I(semic, ";", &w_colon) LIT(doexit), comma, LIT(&latest), poke, intr, END
#define LATEST &w_semic
#include <ctype.h>
#include <stdio.h>
#include <string.h>
NAKED void dot() { printf("%ld ", *sp++); NEXT; }
NAKED void dot() {
STASH;
printf("%ld ", *sp++);
RESTORE;
NEXT;
}
extern long strtol(char *, char **, int);
static void call(void *ptr);
static void dump(void);
//static void dump(void);
static void init(void);
int base = 10;
@ -268,26 +251,26 @@ void init(void)
latest = LATEST;
}
void dump(void)
{
//printf("IP: %ld\n", (intptr_t)pp);
printf("DS: ");
intptr_t *it = END_OF(dstack) - 1;
while (it >= sp) {
printf("%ld ", *it);
--it;
}
putchar('\n');
//printf("RS: ");
//intptr_t ***rt = END_OF(rstack) - 1;
//while (rt >= rp) {
// printf("%ld ", (intptr_t)*rt);
// --rt;
//void dump(void)
//{
// //printf("IP: %ld\n", (intptr_t)pp);
//
// printf("DS: ");
// intptr_t *it = END_OF(dstack) - 1;
// while (it >= sp) {
// printf("%ld ", *it);
// --it;
// }
// putchar('\n');
}
//
// //printf("RS: ");
// //intptr_t ***rt = END_OF(rstack) - 1;
// //while (rt >= rp) {
// // printf("%ld ", (intptr_t)*rt);
// // --rt;
// //}
// //putchar('\n');
//}
void call(void *ptr)
{

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