mes/scaffold/mini-mes.c

1661 lines
35 KiB
C
Raw Normal View History

/* -*-comment-start: "//";comment-end:""-*-
* Mes --- Maxwell Equations of Software
* Copyright © 2016,2017 Jan Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of Mes.
*
* Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* Mes is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#define MES_MINI 1
2017-01-18 06:38:45 +00:00
#define FIXED_PRIMITIVES 0
#if __GNUC__
#define FIXME_NYACC 1
#define __NYACC__ 0
#define NYACC_CAR
#define NYACC_CDR
#else
#define __NYACC__ 1
#define NYACC_CAR nyacc_car
#define NYACC_CDR nyacc_cdr
#endif
char arena[2000];
//char buf0[400];
2017-01-18 06:38:45 +00:00
int g_stdin = 0;
#if __GNUC__
2017-01-18 06:38:45 +00:00
typedef long size_t;
void *malloc (size_t i);
int open (char const *s, int mode);
int read (int fd, void* buf, size_t n);
void write (int fd, char const* s, int n);
void
exit (int code)
{
asm (
"movl %0,%%ebx\n\t"
"movl $1,%%eax\n\t"
"int $0x80"
: // no outputs "=" (r)
: "" (code)
);
// not reached
exit (0);
}
char const*
getenv (char const* p)
{
return 0;
}
2017-01-18 06:38:45 +00:00
int
read (int fd, void* buf, size_t n)
{
int r;
//syscall (SYS_write, fd, s, n));
asm (
"movl %1,%%ebx\n\t"
"movl %2,%%ecx\n\t"
"movl %3,%%edx\n\t"
"movl $0x3,%%eax\n\t"
"int $0x80\n\t"
"mov %%eax,%0\n\t"
: "=r" (r)
: "" (fd), "" (buf), "" (n)
: "eax", "ebx", "ecx", "edx"
);
return r;
}
int
open (char const *s, int mode)
{
2017-01-18 06:38:45 +00:00
int r;
//syscall (SYS_open, mode));
asm (
"mov %1,%%ebx\n\t"
"mov %2,%%ecx\n\t"
"mov $0x5,%%eax\n\t"
"int $0x80\n\t"
"mov %%eax,%0\n\t"
: "=r" (r)
: "" (s), "" (mode)
: "eax", "ebx", "ecx"
);
return r;
}
int
2017-01-18 06:38:45 +00:00
getchar ()
{
2017-01-18 06:38:45 +00:00
char c;
int r = read (g_stdin, &c, 1);
if (r < 1) return -1;
return c;
}
void
write (int fd, char const* s, int n)
{
int r;
//syscall (SYS_write, fd, s, n));
asm (
"mov %0,%%ebx\n\t"
"mov %1,%%ecx\n\t"
"mov %2,%%edx\n\t"
"mov $0x4, %%eax\n\t"
"int $0x80\n\t"
: // no outputs "=" (r)
: "" (fd), "" (s), "" (n)
: "eax", "ebx", "ecx", "edx"
);
}
2017-01-18 06:38:45 +00:00
int
putchar (int c)
{
//write (STDOUT, s, strlen (s));
//int i = write (STDOUT, s, strlen (s));
write (1, (char*)&c, 1);
return 0;
}
void *
malloc (size_t size)
{
int *n;
int len = size + sizeof (size);
//n = mmap (0, len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0 );
*n = len;
return (void*)(n+1);
}
void
free (void *p)
{
int *n = (int*)p-1;
//munmap ((void*)p, *n);
}
#define EOF -1
#define STDIN 0
#define STDOUT 1
#define STDERR 2
size_t
strlen (char const* s)
{
int i = 0;
while (s[i]) i++;
return i;
}
int
strcmp (char const* a, char const* b)
{
while (*a && *b && *a == *b) {a++;b++;}
return *a - *b;
}
int
puts (char const* s)
{
//write (STDOUT, s, strlen (s));
//int i = write (STDOUT, s, strlen (s));
int i = strlen (s);
write (1, s, i);
return 0;
}
int
eputs (char const* s)
{
//write (STDERR, s, strlen (s));
//int i = write (STDERR, s, strlen (s));
int i = strlen (s);
write (2, s, i);
return 0;
}
char const*
itoa (int x)
{
static char buf[10];
char *p = buf+9;
*p-- = 0;
int sign = x < 0;
if (sign)
x = -x;
do
{
*p-- = '0' + (x % 10);
x = x / 10;
} while (x);
if (sign)
*p-- = '-';
return p+1;
}
2017-01-18 06:38:45 +00:00
#endif
void
assert_fail (char* s)
{
eputs ("assert fail:");
#if __GNUC__
eputs (s);
#endif
eputs ("\n");
#if __GNUC__
*((int*)0) = 0;
#endif
}
#if __GNUC__
#define assert(x) ((x) ? (void)0 : assert_fail ("boo:" #x))
#else
//#define assert(x) ((x) ? (void)0 : assert_fail ("boo:" #x))
#define assert(x) ((x) ? (void)0 : assert_fail (0))
#endif
typedef int SCM;
2017-01-18 06:38:45 +00:00
#if __GNUC__
int g_debug = 0;
2017-01-18 06:38:45 +00:00
#endif
int g_free = 0;
SCM g_symbols = 0;
SCM g_stack = 0;
// a/env
SCM r0 = 0;
// param 1
SCM r1 = 0;
// save 2+load/dump
SCM r2 = 0;
// continuation
SCM r3 = 0;
2017-01-18 06:38:45 +00:00
#if __NYACC__ || FIXME_NYACC
enum type_t {CHAR, CLOSURE, CONTINUATION, TFUNCTION, KEYWORD, MACRO, NUMBER, PAIR, REF, SPECIAL, TSTRING, SYMBOL, VALUES, TVECTOR, BROKEN_HEART};
#else
enum type_t {CHAR, CLOSURE, CONTINUATION, FUNCTION, KEYWORD, MACRO, NUMBER, PAIR, REF, SPECIAL, STRING, SYMBOL, VALUES, VECTOR, BROKEN_HEART};
#endif
struct scm {
enum type_t type;
SCM car;
SCM cdr;
};
2017-01-18 06:38:45 +00:00
typedef int (*f_t) (void);
struct function {
int (*function) (void);
int arity;
};
struct scm *g_cells = arena;
//scm *g_news = 0;
// struct scm scm_nil = {SPECIAL, "()"};
// struct scm scm_f = {SPECIAL, "#f"};
// struct scm scm_t = {SPECIAL, "#t"};
// struct scm_dot = {SPECIAL, "."};
// struct scm_arrow = {SPECIAL, "=>"};
// struct scm_undefined = {SPECIAL, "*undefined*"};
// struct scm_unspecified = {SPECIAL, "*unspecified*"};
// struct scm_closure = {SPECIAL, "*closure*"};
// struct scm_circular = {SPECIAL, "*circular*"};
// struct scm_begin = {SPECIAL, "*begin*"};
// struct scm_vm_apply = {SPECIAL, "core:apply"};
// struct scm_vm_apply2 = {SPECIAL, "*vm-apply2*"};
// struct scm_vm_eval = {SPECIAL, "core:eval"};
// struct scm_vm_begin = {SPECIAL, "*vm-begin*"};
// //scm scm_vm_begin_read_input_file = {SPECIAL, "*vm-begin-read-input-file*"};
// struct scm_vm_begin2 = {SPECIAL, "*vm-begin2*"};
// struct scm_vm_return = {SPECIAL, "*vm-return*"};
// //#include "mes.symbols.h"
#define cell_nil 1
#define cell_f 2
#define cell_t 3
#define cell_dot 4
// #define cell_arrow 5
#define cell_undefined 6
#define cell_unspecified 7
#define cell_closure 8
#define cell_circular 9
#define cell_begin 10
#define cell_symbol_dot 11
#define cell_symbol_lambda 12
#define cell_symbol_begin 13
#define cell_symbol_if 14
#define cell_symbol_quote 15
#define cell_symbol_set_x 16
2017-01-18 06:38:45 +00:00
#define cell_vm_apply 45
#define cell_vm_apply2 46
#define cell_vm_eval 47
#define cell_vm_begin 56
//#define cell_vm_begin_read_input_file 57
#define cell_vm_begin2 58
#define cell_vm_return 63
SCM tmp;
SCM tmp_num;
SCM tmp_num2;
int ARENA_SIZE = 200;
struct function functions[2];
int g_function = 0;
SCM make_cell (SCM type, SCM car, SCM cdr);
struct function fun_make_cell = {&make_cell, 3};
struct scm scm_make_cell = {TFUNCTION,0,0};
//, "make-cell", 0};
SCM cell_make_cell;
SCM cons (SCM x, SCM y);
struct function fun_cons = {&cons, 2};
struct scm scm_cons = {TFUNCTION,0,0};
// "cons", 0};
SCM cell_cons;
SCM car (SCM x);
struct function fun_car = {&car, 1};
struct scm scm_car = {TFUNCTION,0,0};
// "car", 0};
SCM cell_car;
SCM cdr (SCM x);
struct function fun_cdr = {&cdr, 1};
struct scm scm_cdr = {TFUNCTION,0,0};
// "cdr", 0};
SCM cell_cdr;
// SCM eq_p (SCM x, SCM y);
// struct function fun_eq_p = {&eq_p, 2};
// scm scm_eq_p = {TFUNCTION,0,0};// "eq?", 0};
// SCM cell_eq_p;
#define TYPE(x) (g_cells[x].type)
#define CAR(x) g_cells[x].car
#define LENGTH(x) g_cells[x].car
#define STRING(x) g_cells[x].car
#define CDR(x) g_cells[x].cdr
#if __GNUC__
//#define CLOSURE(x) g_cells[x].closure
#endif
2017-01-18 06:38:45 +00:00
#define CONTINUATION(x) g_cells[x].cdr
#if __GNUC__
//#define FUNCTION(x) functions[g_cells[x].function]
#endif
#define FUNCTION(x) functions[g_cells[x].cdr]
#define VALUE(x) g_cells[x].cdr
#define VECTOR(x) g_cells[x].cdr
#define MAKE_CHAR(n) make_cell (tmp_num_ (CHAR), 0, tmp_num2_ (n))
//#define MAKE_CONTINUATION(n) make_cell (tmp_num_ (CONTINUATION), n, g_stack)
2017-01-18 06:38:45 +00:00
#define MAKE_NUMBER(n) make_cell (tmp_num_ (NUMBER), 0, tmp_num2_ (n))
//#define MAKE_REF(n) make_cell (tmp_num_ (REF), n, 0)
2017-01-18 06:38:45 +00:00
#define CAAR(x) CAR (CAR (x))
// #define CDAR(x) CDR (CAR (x))
#define CADAR(x) CAR (CDR (CAR (x)))
// #define CADDR(x) CAR (CDR (CDR (x)))
// #define CDDDR(x) CDR (CDR (CDR (x)))
#define CDADAR(x) CAR (CDR (CAR (CDR (x))))
#define CADR(x) CAR (CDR (x))
#if __NYACC__ || FIXME_NYACC
#define MAKE_STRING(x) make_cell (tmp_num_ (TSTRING), x, 0)
// #else
// #define MAKE_STRING(x) make_cell (tmp_num_ (STRING), x, 0)
#endif
SCM
alloc (int n)
{
assert (g_free + n < ARENA_SIZE);
SCM x = g_free;
g_free += n;
return x;
}
SCM
make_cell (SCM type, SCM car, SCM cdr)
{
SCM x = alloc (1);
assert (TYPE (type) == NUMBER);
TYPE (x) = VALUE (type);
if (VALUE (type) == CHAR || VALUE (type) == NUMBER) {
if (car) CAR (x) = CAR (car);
if (cdr) CDR(x) = CDR(cdr);
} else if (VALUE (type) == TFUNCTION) {
if (car) CAR (x) = car;
if (cdr) CDR(x) = CDR(cdr);
} else {
CAR (x) = car;
CDR(x) = cdr;
}
return x;
}
SCM
tmp_num_ (int x)
{
VALUE (tmp_num) = x;
return tmp_num;
}
SCM
tmp_num2_ (int x)
{
VALUE (tmp_num2) = x;
return tmp_num2;
}
SCM
cons (SCM x, SCM y)
{
#if __GNUC__
VALUE (tmp_num) = PAIR;
return make_cell (tmp_num, x, y);
#else
//FIXME GNUC
return 0;
#endif
}
SCM
car (SCM x)
{
#if MES_MINI
//Nyacc
//assert ("!car");
#else
if (TYPE (x) != PAIR) error (cell_symbol_not_a_pair, cons (x, cell_symbol_car));
#endif
return CAR (x);
}
SCM
cdr (SCM x)
{
#if MES_MINI
//Nyacc
//assert ("!cdr");
#else
if (TYPE (x) != PAIR) error (cell_symbol_not_a_pair, cons (x, cell_symbol_cdr));
#endif
return CDR(x);
}
// SCM
// eq_p (SCM x, SCM y)
// {
// return (x == y
// || ((TYPE (x) == KEYWORD && TYPE (y) == KEYWORD
// && STRING (x) == STRING (y)))
// || (TYPE (x) == CHAR && TYPE (y) == CHAR
// && VALUE (x) == VALUE (y))
// || (TYPE (x) == NUMBER && TYPE (y) == NUMBER
// && VALUE (x) == VALUE (y)))
// ? cell_t : cell_f;
// }
2017-01-18 06:38:45 +00:00
SCM
gc_push_frame ()
2017-01-18 06:38:45 +00:00
{
SCM frame = cons (r1, cons (r2, cons (r3, cons (r0, cell_nil))));
g_stack = cons (frame, g_stack);
return g_stack;
2017-01-18 06:38:45 +00:00
}
SCM
xgc_push_frame ()
{
// SCM frame = cons (r1, cons (r2, cons (r3, cons (r0, cell_nil))));
// g_stack = cons (frame, g_stack);
return g_stack;
}
2017-01-18 06:38:45 +00:00
SCM
append2 (SCM x, SCM y)
{
if (x == cell_nil) return y;
assert (TYPE (x) == PAIR);
return cons (car (x), append2 (cdr (x), y));
}
SCM
pairlis (SCM x, SCM y, SCM a)
{
if (x == cell_nil)
return a;
if (TYPE (x) != PAIR)
return cons (cons (x, y), a);
return cons (cons (car (x), car (y)),
pairlis (cdr (x), cdr (y), a));
}
SCM
assq (SCM x, SCM a)
{
//while (a != cell_nil && eq_p (x, CAAR (a)) == cell_f) a = CDR (a);
while (a != cell_nil && x == CAAR (a)) a = CDR (a);
2017-01-18 06:38:45 +00:00
return a != cell_nil ? car (a) : cell_f;
}
SCM
assq_ref_env (SCM x, SCM a)
{
x = assq (x, a);
if (x == cell_f) return cell_undefined;
return cdr (x);
}
SCM
assert_defined (SCM x, SCM e)
{
if (e != cell_undefined) return e;
// error (cell_symbol_unbound_variable, x);
puts ("unbound variable");
exit (33);
return e;
}
SCM
push_cc (SCM p1, SCM p2, SCM a, SCM c) ///((internal))
{
puts ("push_cc\n");
SCM x = r3;
r3 = c;
r2 = p2;
gc_push_frame ();
r1 = p1;
r0 = a;
r3 = x;
return cell_unspecified;
}
SCM
xpush_cc (SCM p1, SCM p2, SCM a, SCM c) ///((internal))
{
puts ("push_cc\n");
SCM x = r3;
r3 = c;
r2 = p2;
xgc_push_frame ();
r1 = p1;
r0 = a;
r3 = x;
return cell_unspecified;
}
SCM caar (SCM x) {return car (car (x));}
SCM cadr (SCM x) {return car (cdr (x));}
SCM cdar (SCM x) {return cdr (car (x));}
SCM cddr (SCM x) {return cdr (cdr (x));}
2017-01-18 06:38:45 +00:00
SCM call (SCM,SCM);
SCM gc_pop_frame ();
SCM
eval_apply ()
{
eval_apply:
// if (g_free + GC_SAFETY > ARENA_SIZE)
// gc_pop_frame (gc (gc_push_frame ()));
switch (r3)
{
#if 0
case cell_vm_evlis: goto evlis;
case cell_vm_evlis2: goto evlis2;
case cell_vm_evlis3: goto evlis3;
#endif
case cell_vm_apply: {goto apply;}
case cell_vm_apply2: {goto apply2;}
case cell_vm_eval: {goto eval;}
2017-01-18 06:38:45 +00:00
#if 0
#if FIXED_PRIMITIVES
case cell_vm_eval_car: goto eval_car;
case cell_vm_eval_cdr: goto eval_cdr;
case cell_vm_eval_cons: goto eval_cons;
case cell_vm_eval_null_p: goto eval_null_p;
#endif
case cell_vm_eval_set_x: goto eval_set_x;
case cell_vm_eval_macro: goto eval_macro;
case cell_vm_eval2: goto eval2;
case cell_vm_macro_expand: goto macro_expand;
#endif
case cell_vm_begin: {goto begin;}
2017-01-18 06:38:45 +00:00
///case cell_vm_begin_read_input_file: goto begin_read_input_file;
case cell_vm_begin2: {goto begin2;}
2017-01-18 06:38:45 +00:00
#if 0
case cell_vm_if: goto vm_if;
case cell_vm_if_expr: goto if_expr;
case cell_vm_call_with_current_continuation2: goto call_with_current_continuation2;
case cell_vm_call_with_values2: goto call_with_values2;
case cell_vm_return: goto vm_return;
#endif
case cell_unspecified: {return r1;}
default: {assert (0);}
2017-01-18 06:38:45 +00:00
}
SCM x = cell_nil;
SCM y = cell_nil;
// #if 0
// evlis:
// if (r1 == cell_nil) goto vm_return;
// if (TYPE (r1) != PAIR) goto eval;
// push_cc (car (r1), r1, r0, cell_vm_evlis2);
// goto eval;
// evlis2:
// push_cc (cdr (r2), r1, r0, cell_vm_evlis3);
// goto evlis;
// evlis3:
// r1 = cons (r2, r1);
// goto vm_return;
// #endif
apply:
switch (TYPE (car (r1)))
{
case TFUNCTION: {
2017-01-18 06:38:45 +00:00
//check_formals (car (r1), MAKE_NUMBER (FUNCTION (car (r1)).arity), cdr (r1));
r1 = call (car (r1), cdr (r1)); /// FIXME: move into eval_apply
goto vm_return;
}
// case CLOSURE:
// {
// SCM cl = CLOSURE (car (r1));
// SCM formals = cadr (cl);
// SCM body = cddr (cl);
// SCM aa = cdar (cl);
// aa = cdr (aa);
// //check_formals (car (r1), formals, cdr (r1));
// SCM p = pairlis (formals, cdr (r1), aa);
// call_lambda (body, p, aa, r0);
// goto begin;
// }
// case CONTINUATION:
// {
// x = r1;
// g_stack = CONTINUATION (CAR (r1));
// gc_pop_frame ();
// r1 = cadr (x);
// goto eval_apply;
// }
// #if 0
// case SPECIAL:
// {
// switch (car (r1))
// {
// case cell_vm_apply:
// {
// push_cc (cons (CADR (r1), CADDR (r1)), r1, r0, cell_vm_return);
// goto apply;
// }
// case cell_vm_eval:
// {
// push_cc (CADR (r1), r1, CADDR (r1), cell_vm_return);
// goto eval;
// }
// case cell_call_with_current_continuation:
// {
// r1 = cdr (r1);
// goto call_with_current_continuation;
// }
// default: check_apply (cell_f, car (r1));
// }
// }
// case SYMBOL:
// {
// if (car (r1) == cell_symbol_call_with_values)
// {
// r1 = cdr (r1);
// goto call_with_values;
// }
// if (car (r1) == cell_symbol_current_module)
// {
// r1 = r0;
// goto vm_return;
// }
// break;
// }
// #endif
// case PAIR:
// {
// switch (caar (r1))
// {
// case cell_symbol_lambda:
// {
// SCM formals = cadr (car (r1));
// SCM body = cddr (car (r1));
// SCM p = pairlis (formals, cdr (r1), r0);
// check_formals (r1, formals, cdr (r1));
// call_lambda (body, p, p, r0);
// goto begin;
// }
// }
// }
}
push_cc (car (r1), r1, r0, cell_vm_apply2);
goto eval;
apply2:
//check_apply (r1, car (r2));
r1 = cons (r1, cdr (r2));
goto apply;
eval:
switch (TYPE (r1))
{
case PAIR:
{
switch (car (r1))
{
// #if FIXED_PRIMITIVES
// case cell_symbol_car:
// {
// push_cc (CADR (r1), r1, r0, cell_vm_eval_car); goto eval;
// eval_car:
// x = r1; gc_pop_frame (); r1 = car (x); goto eval_apply;
// }
// case cell_symbol_cdr:
// {
// push_cc (CADR (r1), r1, r0, cell_vm_eval_cdr); goto eval;
// eval_cdr:
// x = r1; gc_pop_frame (); r1 = cdr (x); goto eval_apply;
// }
// case cell_symbol_cons: {
// push_cc (CDR (r1), r1, r0, cell_vm_eval_cons); goto evlis;
// eval_cons:
// x = r1;
// gc_pop_frame ();
// r1 = cons (CAR (x), CADR (x));
// goto eval_apply;
// }
// case cell_symbol_null_p:
// {
// push_cc (CADR (r1), r1, r0, cell_vm_eval_null_p);
// goto eval;
// eval_null_p:
// x = r1; gc_pop_frame (); r1 = null_p (x); goto eval_apply;
// }
// #endif // FIXED_PRIMITIVES
// case cell_symbol_quote:
// {
// x = r1; gc_pop_frame (); r1 = cadr (x); goto eval_apply;
// }
// case cell_symbol_begin: goto begin;
// case cell_symbol_lambda:
// {
// r1 = make_closure (cadr (r1), cddr (r1), assq (cell_closure, r0));
// goto vm_return;
// }
// #if 0
// case cell_symbol_if: {r1=cdr (r1); goto vm_if;}
// case cell_symbol_set_x:
// {
// push_cc (car (cddr (r1)), r1, r0, cell_vm_eval_set_x);
// goto eval;
// eval_set_x:
// x = r2;
// r1 = set_env_x (cadr (x), r1, r0);
// goto vm_return;
// }
// case cell_vm_macro_expand:
// {
// push_cc (cadr (r1), r1, r0, cell_vm_return);
// goto macro_expand;
// }
// #endif
default: {
#if 0
push_cc (r1, r1, r0, cell_vm_eval_macro);
goto macro_expand;
eval_macro:
x = r2;
if (r1 != r2)
{
if (TYPE (r1) == PAIR)
{
set_cdr_x (r2, cdr (r1));
set_car_x (r2, car (r1));
}
goto eval;
}
push_cc (CDR (r1), r1, r0, cell_vm_eval2); goto evlis;
eval2:
#endif
r1 = cons (car (r2), r1);
goto apply;
}
}
}
case SYMBOL:
{
r1 = assert_defined (r1, assq_ref_env (r1, r0));
goto vm_return;
}
default: {goto vm_return;}
2017-01-18 06:38:45 +00:00
}
// SCM macro;
// SCM expanders;
// #if 0
// macro_expand:
// if (TYPE (r1) == PAIR
// && (macro = lookup_macro (car (r1), r0)) != cell_f)
// {
// r1 = cons (macro, CDR (r1));
// goto apply;
// }
// else if (TYPE (r1) == PAIR
// && TYPE (CAR (r1)) == SYMBOL
// && ((expanders = assq_ref_env (cell_symbol_sc_expander_alist, r0)) != cell_undefined)
// && ((macro = assq (CAR (r1), expanders)) != cell_f))
// {
// SCM sc_expand = assq_ref_env (cell_symbol_macro_expand, r0);
// if (sc_expand != cell_undefined && sc_expand != cell_f)
// {
// r1 = cons (sc_expand, cons (r1, cell_nil));
// goto apply;
// }
// }
// goto vm_return;
// #endif
begin:
x = cell_unspecified;
while (r1 != cell_nil) {
if (TYPE (r1) == PAIR && TYPE (CAR (r1)) == PAIR)
{
if (caar (r1) == cell_symbol_begin)
r1 = append2 (cdar (r1), cdr (r1));
#if 0
else if (caar (r1) == cell_symbol_primitive_load)
{
push_cc (cons (cell_symbol_read_input_file, cell_nil), r1, r0, cell_vm_begin_read_input_file);
goto apply;
begin_read_input_file:
r1 = append2 (r1, cdr (r2));
}
#endif
}
if (CDR (r1) == cell_nil)
{
r1 = car (r1);
goto eval;
}
push_cc (CAR (r1), r1, r0, cell_vm_begin2);
goto eval;
begin2:
x = r1;
r1 = CDR (r2);
}
r1 = x;
goto vm_return;
// #if 0
// vm_if:
// push_cc (car (r1), r1, r0, cell_vm_if_expr);
// goto eval;
// if_expr:
// x = r1;
// r1 = r2;
// if (x != cell_f)
// {
// r1 = cadr (r1);
// goto eval;
// }
// if (cddr (r1) != cell_nil)
// {
// r1 = car (cddr (r1));
// goto eval;
// }
// r1 = cell_unspecified;
// goto vm_return;
// call_with_current_continuation:
// gc_push_frame ();
// x = MAKE_CONTINUATION (g_continuations++);
// gc_pop_frame ();
// push_cc (cons (car (r1), cons (x, cell_nil)), x, r0, cell_vm_call_with_current_continuation2);
// goto apply;
// call_with_current_continuation2:
// CONTINUATION (r2) = g_stack;
// goto vm_return;
// call_with_values:
// push_cc (cons (car (r1), cell_nil), r1, r0, cell_vm_call_with_values2);
// goto apply;
// call_with_values2:
// if (TYPE (r1) == VALUES)
// r1 = CDR (r1);
// r1 = cons (cadr (r2), r1);
// goto apply;
// #endif
vm_return:
x = r1;
gc_pop_frame ();
r1 = x;
goto eval_apply;
}
SCM
call (SCM fn, SCM x)
{
if ((FUNCTION (fn).arity > 0 || FUNCTION (fn).arity == -1)
&& x != cell_nil && TYPE (CAR (x)) == VALUES)
x = cons (CADAR (x), CDR (x));
if ((FUNCTION (fn).arity > 1 || FUNCTION (fn).arity == -1)
&& x != cell_nil && TYPE (CDR (x)) == PAIR && TYPE (CADR (x)) == VALUES)
x = cons (CAR (x), cons (CDADAR (x), CDR (x)));
struct function* f = &FUNCTION (fn);
2017-01-18 06:38:45 +00:00
switch (FUNCTION (fn).arity)
{
// case 0: return FUNCTION (fn).function0 ();
// case 1: return FUNCTION (fn).function1 (car (x));
// case 2: return FUNCTION (fn).function2 (car (x), cadr (x));
// case 3: return FUNCTION (fn).function3 (car (x), cadr (x), car (cddr (x)));
// case -1: return FUNCTION (fn).functionn (x);
case 0: {return (FUNCTION (fn).function) ();}
case 1: {return ((SCM(*)(SCM))(FUNCTION (fn).function)) (car (x));}
case 2: {return ((SCM(*)(SCM,SCM))(FUNCTION (fn).function)) (car (x), cadr (x));}
case 3: {return ((SCM(*)(SCM,SCM,SCM))(FUNCTION (fn).function)) (car (x), cadr (x), car (cddr (x)));}
//case -1: {return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);}
default: {return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);}
2017-01-18 06:38:45 +00:00
}
return cell_unspecified;
}
SCM
gc_peek_frame ()
{
SCM frame = car (g_stack);
r1 = car (frame);
r2 = cadr (frame);
r3 = car (cddr (frame));
r0 = cadr (cddr (frame));
return frame;
}
2017-01-18 06:38:45 +00:00
SCM
gc_pop_frame ()
{
SCM frame = gc_peek_frame (g_stack);
g_stack = cdr (g_stack);
return frame;
}
SCM
mes_g_stack (SCM a) ///((internal))
{
r0 = a;
r1 = MAKE_CHAR (0);
r2 = MAKE_CHAR (0);
r3 = MAKE_CHAR (0);
g_stack = cons (cell_nil, cell_nil);
return r0;
}
// Environment setup
SCM
make_tmps (struct scm* cells)
{
tmp = g_free++;
cells[tmp].type = CHAR;
tmp_num = g_free++;
cells[tmp_num].type = NUMBER;
tmp_num2 = g_free++;
cells[tmp_num2].type = NUMBER;
return 0;
}
SCM
make_symbol_ (SCM s)
{
VALUE (tmp_num) = SYMBOL;
SCM x = make_cell (tmp_num, s, 0);
g_symbols = cons (x, g_symbols);
return x;
}
SCM
make_symbol (SCM s)
{
#if MES_MINI
SCM x = 0;
#else
SCM x = lookup_symbol_ (s);
#endif
return x ? x : make_symbol_ (s);
}
SCM
cstring_to_list (char const* s)
{
SCM p = cell_nil;
int i = strlen (s);
while (i--)
p = cons (MAKE_CHAR (s[i]), p);
return p;
}
SCM
acons (SCM key, SCM value, SCM alist)
{
return cons (cons (key, value), alist);
}
// Jam Collector
SCM g_symbol_max;
SCM
gc_init_cells ()
{
2017-01-18 06:38:45 +00:00
return 0;
// g_cells = (scm *)malloc (2*ARENA_SIZE*sizeof(scm));
// #if __NYACC__ || FIXME_NYACC
// TYPE (0) = TVECTOR;
// // #else
// // TYPE (0) = VECTOR;
// #endif
// LENGTH (0) = 1000;
// VECTOR (0) = 0;
// g_cells++;
// TYPE (0) = CHAR;
// VALUE (0) = 'c';
}
// INIT NEWS
SCM
mes_symbols () ///((internal))
{
gc_init_cells ();
// gc_init_news ();
#if __GNUC__ && 0
//#include "mes.symbols.i"
#else
g_free++;
// g_cells[cell_nil] = scm_nil;
g_free++;
// g_cells[cell_f] = scm_f;
g_free++;
// g_cells[cell_t] = scm_t;
g_free++;
// g_cells[cell_dot] = scm_dot;
g_free++;
// g_cells[cell_arrow] = scm_arrow;
g_free++;
// g_cells[cell_undefined] = scm_undefined;
g_free++;
// g_cells[cell_unspecified] = scm_unspecified;
g_free++;
// g_cells[cell_closure] = scm_closure;
g_free++;
// g_cells[cell_circular] = scm_circular;
g_free++;
// g_cells[cell_begin] = scm_begin;
2017-01-18 06:38:45 +00:00
///
g_free = 44;
g_free++;
// g_cells[cell_vm_apply] = scm_vm_apply;
2017-01-18 06:38:45 +00:00
g_free++;
// g_cells[cell_vm_apply2] = scm_vm_apply2;
2017-01-18 06:38:45 +00:00
g_free++;
// g_cells[cell_vm_eval] = scm_vm_eval;
2017-01-18 06:38:45 +00:00
///
g_free = 55;
g_free++;
// g_cells[cell_vm_begin] = scm_vm_begin;
2017-01-18 06:38:45 +00:00
g_free++;
// g_cells[cell_vm_begin_read_input_file] = scm_vm_begin_read_input_file;
g_free++;
// g_cells[cell_vm_begin2] = scm_vm_begin2;
2017-01-18 06:38:45 +00:00
///
g_free = 62;
g_free++;
// g_cells[cell_vm_return] = scm_vm_return;
2017-01-18 06:38:45 +00:00
#endif
g_symbol_max = g_free;
make_tmps (g_cells);
// FIXME GNUC
g_symbols = 0;
for (int i=1; i<g_symbol_max; i++)
g_symbols = cons (i, g_symbols);
SCM a = cell_nil;
#if __GNUC__ && 0
//#include "mes.symbol-names.i"
#else
// g_cells[cell_nil].car = cstring_to_list (scm_nil.name);
// g_cells[cell_f].car = cstring_to_list (scm_f.name);
// g_cells[cell_t].car = cstring_to_list (scm_t.name);
// g_cells[cell_dot].car = cstring_to_list (scm_dot.name);
// g_cells[cell_arrow].car = cstring_to_list (scm_arrow.name);
// g_cells[cell_undefined].car = cstring_to_list (scm_undefined.name);
// g_cells[cell_unspecified].car = cstring_to_list (scm_unspecified.name);
// g_cells[cell_closure].car = cstring_to_list (scm_closure.name);
// g_cells[cell_circular].car = cstring_to_list (scm_circular.name);
// g_cells[cell_begin].car = cstring_to_list (scm_begin.name);
#endif
// a = acons (cell_symbol_mes_version, MAKE_STRING (cstring_to_list (VERSION)), a);
// a = acons (cell_symbol_mes_prefix, MAKE_STRING (cstring_to_list (PREFIX)), a);
//FIXME GNUC
a = acons (cell_symbol_dot, cell_dot, a); //
a = acons (cell_symbol_begin, cell_begin, a);
a = acons (cell_closure, a, a);
// a = acons (cell_symbol_call_with_current_continuation, cell_call_with_current_continuation, a);
// a = acons (cell_symbol_sc_expand, cell_f, a);
return a;
}
2017-01-18 06:38:45 +00:00
SCM
make_closure (SCM args, SCM body, SCM a)
{
return make_cell (tmp_num_ (CLOSURE), cell_f, cons (cons (cell_circular, a), cons (args, body)));
}
SCM
mes_environment () ///((internal))
{
SCM a = 0;
a = mes_symbols ();
a = mes_g_stack (a);
return a;
}
SCM
mes_builtins (SCM a)
{
2017-01-18 06:38:45 +00:00
#if 0
//__GNUC__
//#include "mes.i"
// #include "lib.i"
// #include "math.i"
// #include "posix.i"
// #include "reader.i"
// #include "lib.environment.i"
// #include "math.environment.i"
// #include "mes.environment.i"
// #include "posix.environment.i"
// #include "reader.environment.i"
#else
scm_make_cell.cdr = g_function;
functions[g_function++] = fun_make_cell;
cell_make_cell = g_free++;
#if __GNUC__
puts ("WOOOT=");
puts (itoa (g_free));
//FIXME GNUC
#else
g_cells[16] = scm_make_cell;
#endif
scm_cons.cdr = g_function;
functions[g_function++] = fun_cons;
cell_cons = g_free++;
#if __GNUC__
//FIXME GNUC
g_cells[cell_cons] = scm_cons;
#else
g_cells[17] = scm_cons;
#endif
scm_car.cdr = g_function;
functions[g_function++] = fun_car;
cell_car = g_free++;
#if __GNUC__
//FIXME GNUC
g_cells[cell_car] = scm_car;
#endif
#if __GNUC__
//FIXME GNUC
scm_cdr.cdr = g_function;
functions[g_function++] = fun_cdr;
cell_cdr = g_free++;
g_cells[cell_cdr] = scm_cdr;
2017-01-18 06:38:45 +00:00
// scm_make_cell.string = cstring_to_list (scm_make_cell.name);
// g_cells[cell_make_cell].string = MAKE_STRING (scm_make_cell.string);
// a = acons (make_symbol (scm_make_cell.string), cell_make_cell, a);
2017-01-18 06:38:45 +00:00
// scm_cons.string = cstring_to_list (scm_cons.name);
// g_cells[cell_cons].string = MAKE_STRING (scm_cons.string);
// a = acons (make_symbol (scm_cons.string), cell_cons, a);
2017-01-18 06:38:45 +00:00
// scm_car.string = cstring_to_list (scm_car.name);
// g_cells[cell_car].string = MAKE_STRING (scm_car.string);
// a = acons (make_symbol (scm_car.string), cell_car, a);
2017-01-18 06:38:45 +00:00
// scm_cdr.string = cstring_to_list (scm_cdr.name);
// g_cells[cell_cdr].string = MAKE_STRING (scm_cdr.string);
// a = acons (make_symbol (scm_cdr.string), cell_cdr, a);
#endif
#endif
return a;
}
SCM
bload_env (SCM a) ///((internal))
{
g_stdin = open ("module/mes/read-0.mo", 0);
#if __GNUC__
//g_stdin = g_stdin ? g_stdin : fopen (PREFIX "module/mes/read-0.mo", "r");
#endif
char *p = (char*)g_cells;
assert (getchar () == 'M');
assert (getchar () == 'E');
assert (getchar () == 'S');
g_stack = getchar () << 8;
g_stack += getchar ();
int c = getchar ();
while (c != EOF)
{
*p++ = c;
c = getchar ();
}
g_free = (p-(char*)g_cells) / sizeof (struct scm);
gc_peek_frame ();
g_symbols = r1;
g_stdin = STDIN;
r0 = mes_builtins (r0);
return r2;
}
2017-01-18 06:38:45 +00:00
SCM
fill ()
{
TYPE (0) = 0x6c6c6168;
CAR (0) = 0x6a746f6f;
CDR (0) = 0x00002165;
TYPE (1) = SYMBOL;
CAR (1) = 0x2d2d2d2d;
CDR (1) = 0x3e3e3e3e;
TYPE (9) = 0x2d2d2d2d;
CAR (9) = 0x2d2d2d2d;
CDR (9) = 0x3e3e3e3e;
#if 0
// (A(B))
TYPE (10) = PAIR;
CAR (10) = 11;
CDR (10) = 12;
TYPE (11) = CHAR;
CAR (11) = 0x58585858;
CDR (11) = 89;
TYPE (12) = PAIR;
CAR (12) = 13;
CDR (12) = 1;
TYPE (13) = CHAR;
CAR (13) = 0x58585858;
2017-01-18 06:38:45 +00:00
CDR (13) = 90;
TYPE (14) = 0x58585858;
CAR (14) = 0x58585858;
CDR (14) = 0x58585858;
TYPE (14) = 0x58585858;
CAR (14) = 0x58585858;
CDR (14) = 0x58585858;
#else
// (cons 0 1)
TYPE (10) = PAIR;
CAR (10) = 11;
CDR (10) = 12;
TYPE (11) = TFUNCTION;
2017-01-18 06:38:45 +00:00
CAR (11) = 0x58585858;
// 0 = make_cell
// 1 = cons
// 2 = car
2017-01-18 06:38:45 +00:00
CDR (11) = 1;
TYPE (12) = PAIR;
CAR (12) = 13;
//CDR (12) = 1;
2017-01-18 06:38:45 +00:00
CDR (12) = 14;
TYPE (13) = NUMBER;
CAR (13) = 0x58585858;
2017-01-18 06:38:45 +00:00
CDR (13) = 0;
TYPE (14) = PAIR;
CAR (14) = 15;
CDR (14) = 1;
TYPE (15) = NUMBER;
CAR (15) = 0x58585858;
CDR (15) = 1;
#endif
2017-01-18 06:38:45 +00:00
return 0;
}
SCM
display_ (SCM x)
{
//puts ("<display>\n");
switch (TYPE (x))
{
case CHAR:
{
//puts ("<char>\n");
puts ("#\\");
putchar (VALUE (x));
break;
}
case TFUNCTION:
2017-01-18 06:38:45 +00:00
{
//puts ("<function>\n");
if (VALUE (x) == 0)
puts ("make-cell");
if (VALUE (x) == 1)
puts ("cons");
if (VALUE (x) == 2)
puts ("car");
if (VALUE (x) == 3)
puts ("cdr");
break;
}
case NUMBER:
{
//puts ("<number>\n");
#if __GNUC__
putchar (48 + VALUE (x));
#else
int i;
i = VALUE (x);
i = i + 48;
putchar (i);
#endif
break;
}
case PAIR:
{
//puts ("<pair>\n");
//if (cont != cell_f) puts "(");
puts ("(");
if (x && x != cell_nil) display_ (CAR (x));
if (CDR (x) && CDR (x) != cell_nil)
{
#if __GNUC__
if (TYPE (CDR (x)) != PAIR)
puts (" . ");
#else
int c;
c = CDR (x);
c = TYPE (c);
if (c != PAIR)
puts (" . ");
#endif
display_ (CDR (x));
}
//if (cont != cell_f) puts (")");
puts (")");
break;
}
default:
{
//puts ("<default>\n");
puts ("_");
break;
}
}
return 0;
}
SCM
simple_bload_env (SCM a) ///((internal))
{
puts ("reading: ");
char *mo = "module/mes/hack-32.mo";
puts (mo);
puts ("\n");
g_stdin = open (mo, 0);
2017-01-18 06:38:45 +00:00
if (g_stdin < 0) {eputs ("no such file: module/mes/read-0-32.mo\n");return 1;}
char *p = (char*)g_cells;
int c;
2017-01-18 06:38:45 +00:00
#if 0
//__GNUC__
2017-01-18 06:38:45 +00:00
puts ("fd: ");
puts (itoa (g_stdin));
puts ("\n");
#endif
#if 0
//__GNUC__
2017-01-18 06:38:45 +00:00
assert (getchar () == 'M');
assert (getchar () == 'E');
assert (getchar () == 'S');
puts (" *GOT MES*\n");
2017-01-18 06:38:45 +00:00
g_stack = getchar () << 8;
g_stack += getchar ();
puts ("stack: ");
puts (itoa (g_stack));
puts ("\n");
#else
c = getchar ();
putchar (c);
if (c != 'M') exit (10);
c = getchar ();
putchar (c);
if (c != 'E') exit (11);
c = getchar ();
putchar (c);
if (c != 'S') exit (12);
puts (" *GOT MES*\n");
// skip stack
2017-01-18 06:38:45 +00:00
getchar ();
getchar ();
#endif
c = getchar ();
while (c != -1)
{
*p++ = c;
c = getchar ();
putchar (c);
2017-01-18 06:38:45 +00:00
}
puts ("read done\n");
2017-01-18 06:38:45 +00:00
g_free = (p-(char*)g_cells) / sizeof (struct scm);
// gc_peek_frame ();
// g_symbols = r1;
g_symbols = 1;
g_stdin = STDIN;
r0 = mes_builtins (r0);
#if __GNUC__
2017-01-18 06:38:45 +00:00
puts ("cells read: ");
puts (itoa (g_free));
puts ("\n");
puts ("symbols: ");
puts (itoa (g_symbols));
puts ("\n");
// display_ (g_symbols);
// puts ("\n");
#endif
display_ (10);
2017-01-18 06:38:45 +00:00
puts ("\n");
fill ();
r2 = 10;
if (TYPE (12) != PAIR)
exit (33);
puts ("program[");
#if __GNUC__
2017-01-18 06:38:45 +00:00
puts (itoa (r2));
#endif
puts ("]: ");
display_ (r2);
//display_ (14);
2017-01-18 06:38:45 +00:00
puts ("\n");
r0 = 1;
//r2 = 10;
2017-01-18 06:38:45 +00:00
return r2;
}
char const*
string_to_cstring (SCM s)
{
static char buf[1024];
char *p = buf;
s = STRING(s);
while (s != cell_nil)
{
*p++ = VALUE (car (s));
s = cdr (s);
}
*p = 0;
return buf;
}
SCM
stderr_ (SCM x)
{
//SCM write;
#if __NYACC__ || FIXME_NYACC
if (TYPE (x) == TSTRING)
// #else
// if (TYPE (x) == STRING)
#endif
eputs (string_to_cstring (x));
2017-01-18 06:38:45 +00:00
// else if ((write = assq_ref_env (cell_symbol_write, r0)) != cell_undefined)
// apply (assq_ref_env (cell_symbol_display, r0), cons (x, cons (MAKE_NUMBER (2), cell_nil)), r0);
#if __NYACC__ || FIXME_NYACC
else if (TYPE (x) == SPECIAL || TYPE (x) == TSTRING || TYPE (x) == SYMBOL)
// #else
// else if (TYPE (x) == SPECIAL || TYPE (x) == STRING || TYPE (x) == SYMBOL)
#endif
eputs (string_to_cstring (x));
else if (TYPE (x) == NUMBER)
eputs (itoa (VALUE (x)));
else
eputs ("display: undefined\n");
return cell_unspecified;
}
int
main (int argc, char *argv[])
{
puts ("Hello mini-mes!\n");
#if __GNUC__
//g_debug = getenv ("MES_DEBUG");
#endif
//if (getenv ("MES_ARENA")) ARENA_SIZE = atoi (getenv ("MES_ARENA"));
if (argc > 1 && !strcmp (argv[1], "--help")) return eputs ("Usage: mes [--dump|--load] < FILE");
#if __GNUC__
if (argc > 1 && !strcmp (argv[1], "--version")) {eputs ("Mes ");return eputs (VERSION);};
#else
if (argc > 1 && !strcmp (argv[1], "--version")) {eputs ("Mes ");return eputs ("0.4");};
#endif
g_stdin = STDIN;
#if 1
r0 = mes_environment ();
#else
puts ("FIXME: mes_environment ()\n");
#endif
#if MES_MINI
2017-01-18 06:38:45 +00:00
SCM program = simple_bload_env (r0);
#else
SCM program = (argc > 1 && !strcmp (argv[1], "--load"))
? bload_env (r0) : load_env (r0);
if (argc > 1 && !strcmp (argv[1], "--dump")) return dump ();
#endif
push_cc (r2, cell_unspecified, r0, cell_unspecified);
2017-01-18 06:38:45 +00:00
//r3 = cell_vm_begin;
r3 = cell_vm_apply;
r1 = eval_apply ();
//stderr_ (r1);
display_ (r1);
eputs ("\n");
#if !MES_MINI
gc (g_stack);
#endif
#if __GNUC__
if (g_debug)
{
eputs ("\nstats: [");
eputs (itoa (g_free));
eputs ("]\n");
}
#endif
return 0;
}
#if __GNUC__
void
_start ()
{
int r;
asm (
"mov %%ebp,%%eax\n\t"
"addl $8,%%eax\n\t"
"push %%eax\n\t"
"mov %%ebp,%%eax\n\t"
"addl $4,%%eax\n\t"
"movzbl (%%eax),%%eax\n\t"
"push %%eax\n\t"
"call main\n\t"
"movl %%eax,%0\n\t"
: "=r" (r)
: //no inputs "" (&main)
);
exit (r);
}
#endif