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mes/scaffold/t.c

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/* -*-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/>.
*/
#if __GNUC__
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);
}
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"
);
}
#define STDOUT 1
typedef long size_t;
size_t
strlen (char const* s)
{
int i = 0;
while (s[i]) i++;
return i;
}
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
putchar (int c)
{
//write (STDOUT, s, strlen (s));
//int i = write (STDOUT, s, strlen (s));
write (1, (char*)&c, 1);
return 0;
}
int
strcmp (char const* a, char const* b)
{
while (*a && *b && *a == *b) {a++;b++;}
return *a - *b;
}
#endif
struct scm {
int type;
int car;
int cdr;
};
char arena[200];
struct scm *g_cells = arena;
char *g_chars = arena;
char buf[200];
int foo () {puts ("t: foo\n"); return 0;};
int bar () {puts ("t: bar\n"); return 0;};
struct function {
int (*function) (void);
int arity;
};
struct function g_fun = {&exit, 1};
struct function g_foo = {&foo, 1};
struct function g_bar = {&bar, 1};
//void *functions[2];
int functions[2];
struct function g_functions[2];
int g_function = 0;
enum type_t {CHAR, CLOSURE, CONTINUATION, TFUNCTION, KEYWORD, MACRO, NUMBER, PAIR, REF, SPECIAL, TSTRING, SYMBOL, VALUES, TVECTOR, BROKEN_HEART};
typedef int SCM;
int g_free = 3;
SCM tmp;
#if 1
int
swits (int c)
{
int x = -1;
switch (c)
{
case 0:
{
x = 0;
c = 34;
break;
}
case 1:
{
x = 1;
break;
}
default:
{
x = 2;
break;
}
}
return x;
}
int g = 48;
int
get ()
{
int i = g;
g++;
return i;
}
int
read_test ()
{
puts ("read test\n");
char *p = (char*)g_chars;
int i = 0;
puts ("t: read 0123456789\n");
int c = get ();
while (i < 10) {
*p++ = c;
putchar (c);
c = get ();
i++;
}
puts ("\n");
if (strcmp (g_chars, "0123456789")) return 1;
return 0;
}
int
math_test ()
{
int i;
puts ("t: 4/2=");
i = 4 / 2;
if (i!=2) return 1;
i += 48;
putchar (i);
puts ("\n");
return read_test ();
}
SCM
make_tmps_test (struct scm* cells)
{
puts ("t: tmp = g_free++\n");
tmp = g_free++;
puts ("t: cells[tmp].type = CHAR\n");
cells[tmp].type = CHAR;
return math_test();
}
#define TYPE(x) (g_cells[x].type)
#define CAR(x) g_cells[x].car
#define CDR(x) g_cells[x].cdr
struct scm scm_fun = {TFUNCTION,0,0};
SCM cell_fun;
int
struct_test ()
{
g_cells[3].type = 0x64;
if (g_cells[3].type != 0x64)
return g_cells[3].type;
TYPE (4) = 4;
if (TYPE (4) != 4)
return 4;
CDR (3) = 0x22;
CDR (4) = 0x23;
if (CDR (3) != 0x22)
return CDR (3);
puts ("t: struct fun = {&exit, 1};\n");
struct function fun = {&exit, 1};
puts ("t: g_fun.arity != 1;\n");
if (g_fun.arity != 1) return 1;
puts ("t: g_fun.function != exit;\n");
if (g_fun.function != &exit) return 1;
puts ("t: fun.arity != 1;\n");
if (fun.arity != 1) return 1;
puts ("t: fun.function != exit;\n");
if (fun.function != &exit) return 1;
puts ("t: g_functions[g_function++] = g_foo;\n");
g_functions[g_function++] = g_foo;
int fn = 0;
puts ("t: g_functions[g_cells[fn].cdr].arity\n");
if (!g_functions[g_cells[fn].cdr].arity) return 1;
int (*functionx) (void) = 0;
functionx = g_functions[0].function;
puts ("t: *functionx == foo\n");
if (*functionx != foo) return 11;
puts ("t: (*functionx) () == foo\n");
if ((*functionx) () != 0) return 12;
fn++;
g_functions[0] = g_bar;
if (g_cells[fn].cdr != 0) return 13;
puts ("t: g_functions[g_cells[fn].cdr].function\n");
functionx = g_functions[g_cells[fn].cdr].function;
puts ("t: *functionx == bar\n");
if (*functionx != bar) return 15;
puts ("t: (*functionx) () == bar\n");
if ((*functionx) () != 0) return 16;
scm_fun.cdr = g_function;
g_functions[g_function++] = g_fun;
cell_fun = g_free++;
g_cells[cell_fun] = scm_fun;
return make_tmps_test (g_cells);
}
int
test (char *p)
{
int f = 0;
int t = 1;
int one = 1;
char c = 'C';
int i=0;
char *x = arena;
char *y = g_chars;
puts ("t: if (0)\n");
if (0) return 1;
puts ("t: if (f)\n");
if (f) return 1;
puts ("t: if (one > 1)\n");
if (one > 1) return 1;
puts ("t: if (one < 0)\n");
if (one < 0) return 1;
puts ("t: if (strlen (\"\"))\n");
if (strlen ("")) return 1;
puts ("t: if (strlen (p) != 4)\n");
if (strlen (p) != 4) return 1;
puts ("t: if (!strlen (\".\"))\n");
if (!strlen (".")) return 1;
puts ("t: if (strcmp (p, \"foo\"))\n");
if (!strcmp (p, "foo")) return 1;
puts ("t: if (strcmp (p, \"t.c\\n\"))\n");
if (strcmp (p, "t.c\n")) return 1;
puts ("t: if (!1)\n");
if (!1) return 1;
puts ("t: if (one == 0)\n");
if (one == 0) return 1;
puts ("t: if (f != 0)\n");
if (one != 1) return 1;
puts ("t: if (1 && 0)\n");
if (1 && 0) return 1;
puts ("t: if (!t && f)\n");
if (!t && f) return 1;
puts ("t: if (t && !one)\n");
if (t && !one) return 1;
puts ("t: if (f || !t)\n");
if (f || !t) return 1;
puts ("t: if (i++)\n");
if (i++) return 1;
puts ("t: if (--i)\n");
if (--i) return 1;
puts ("t: i += 2\n");
i += 2;
if (i != 2) return 1;
puts ("t: i -= 2\n");
i -= 2;
if (i != 0) return 1;
puts ("t: (one == 1) ?\n");
(one == 1) ? 1 : exit (1);
puts ("t: (f) ?\n");
(f) ? exit (1) : 1;
puts ("t: *g_chars != 'A'\n");
arena[0] = 'A';
if (*g_chars != 'A') return 1;
puts ("t: *x != 'A'\n");
if (*x != 'A') return 1;
puts ("t: *y != 'A'\n");
if (*y != 'A') return 1;
puts ("t: *x != 'Q'\n");
g_chars[0] = 'Q';
if (*x != 'Q') return 1;
puts ("t: *x++ != 'C'\n");
*x++ = c;
if (*g_chars != 'C') return 1;
puts ("t: switch 0\n");
if (swits (0) != 0) return swits (0);
puts ("t: switch 1\n");
if (swits (1) != 1) return 1;
puts ("t: switch -1\n");
if (swits (-1) != 2) return 1;
puts ("t: if (1)\n");
if (1) goto ok0;
return 1;
ok0:
puts ("t: if (0); return 1; else;\n");
if (0) return 1; else goto ok01;
ok01:
puts ("t: if (t)\n");
if (t) goto ok1;
return 1;
ok1:
puts ("t: if (one > 0)\n");
if (one > 0) goto ok2;
return 1;
ok2:
puts ("t: if (one < 2)\n");
if (one < 2) goto ok3;
return 1;
ok3:
puts ("t: if (strlen (\".\"))\n");
if (strlen (".")) goto ok4;
return 1;
ok4:
puts ("t: if (strlen (p) == 4)\n");
if (strlen (p) == 4) goto ok40;
ok40:
puts ("t: if (!strcmp (p, \"t.c\\n\"))\n");
if (!strcmp (p, "t.c\n")) goto ok41;
return 1;
ok41:
puts ("t: if (strcmp (p, \"foo\"))\n");
if (strcmp (p, "foo")) goto ok42;
return 1;
ok42:
puts ("t: if (!0)\n");
if (!0) goto ok5;
return 1;
ok5:
puts ("t: if (one == 1)\n");
if (one == 1) goto ok6;
return 1;
ok6:
puts ("t: if (one != 0)\n");
if (one != 0) goto ok7;
return 1;
ok7:
puts ("t: if (1 && !0)\n");
if (1 && !0) goto ok8;
return 1;
ok8:
puts ("t: if (f || t)\n");
if (f || t) goto ok80;
return 1;
ok80:
puts ("t: if (++i)\n");
if (++i) goto ok9;
return 1;
ok9:
puts ("t: if (i--)\n");
if (i--) goto ok10;
return 1;
ok10:
puts ("t: *g_chars == 'B'\n");
arena[0] = 'B';
if (*g_chars == 'B') goto ok11;
return 1;
ok11:
puts ("t: *x == 'B'\n");
x = arena;
if (*x == 'B') goto ok12;
return 1;
ok12:
puts ("t: *y == 'B'\n");
y = g_chars;
if (*y == 'B') goto ok13;
return 1;
ok13:
puts ("t: *x == 'R'\n");
g_chars[0] = 'R';
if (*x == 'R') goto ok14;
return 1;
ok14:
puts ("t: *x++ == 'C'\n");
*x++ = c;
if (*g_chars == 'C') goto ok15;
return 1;
ok15:
puts ("t: for (i=1; i<5; ++i)\n");
for (i=1; i<5; ++i);
if (i != 5) return i;
return struct_test ();
}
#endif
int
main (int argc, char *argv[])
{
char *p = "t.c\n";
puts ("t.c\n");
if (argc > 1 && !strcmp (argv[1], "--help")) return 1;
puts ("t: if (argc > 1 && !strcmp (argv[1], \"--help\")\n");
// FIXME mescc?!
if (argc > 1) if (!strcmp (argv[1], "--help")) return 1;
return test (p);
return 22;
}
#if __GNUC__
void
_start ()
{
// int r=main ();
// exit (r);
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
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