mescc: Add open/read C-tests.

* scaffold/m.c: New file.
* scaffold/tiny-mes.c: New file.
* GNUmakefile (m, tiny-mes): New targets.
* scaffold/micro-mes.c: Update gcc-libc bits.
* scaffold/mini-mes.c: Likewise.

GNUmakefile

@@ -110,6 +110,17 @@ mini-mes: scaffold/mini-mes.c GNUmakefile
 	gcc -nostdlib --std=gnu99 -m32 -g -o $@ '-DVERSION="0.4"' $<
 	chmod +x $@
 
+tiny-mes: scaffold/tiny-mes.c GNUmakefile
+	rm -f $@
+	gcc -nostdlib --std=gnu99 -m32 -g -o $@ '-DVERSION="0.4"' $<
+	chmod +x $@
+
+m: scaffold/m.c GNUmakefile
+	rm -f $@
+	gcc -nostdlib --std=gnu99 -m32 -g -o $@ '-DVERSION="0.4"' $<
+#	gcc --std=gnu99 -g -o $@ '-DVERSION="0.4"' $<
+	chmod +x $@
+
 micro-mes: scaffold/micro-mes.c GNUmakefile
 	rm -f $@
 	gcc -nostdlib --std=gnu99 -m32 -o $@ '-DVERSION="0.4"' $<

scaffold/m.c

@@ -0,0 +1,165 @@
+/* -*-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/>.
+ */
+
+int g_stdin = 0;
+typedef long size_t;
+
+#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);
+}
+
+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)
+{
+  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
+getchar ()
+{
+  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"
+       );
+}
+
+int
+putchar (int c)
+{
+  //write (STDOUT, s, strlen (s));
+  //int i = write (STDOUT, s, strlen (s));
+  write (1, (char*)&c, 1);
+  return 0;
+}
+
+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;
+}
+#endif
+
+int
+main (int argc, char *argv[])
+{
+  g_stdin = open ("mesmes", 0);
+  int c = getchar ();
+  while (c != -1) {
+    putchar (c);
+    c = getchar ();
+  }
+  return c;
+}
+
+#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

scaffold/micro-mes.c

@@ -133,7 +133,7 @@ strcmp (char const* a, char const* b)
 }
 
 int
-getc ()
+getchar ()
 {
   return read (g_stdin, 1);
 }

scaffold/mini-mes.c

@@ -37,6 +37,33 @@ void *malloc (size_t i);
 
 #if __GNUC__
 
+// #define __NR_restart_syscall 0
+// #define __NR_exit 1
+// #define __NR_fork 2
+// #define __NR_read 3
+// #define __NR_write 4
+// #define __NR_open 5
+
+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;
+}
+
 int
 open (char const *s, int mode)
 {
@@ -67,7 +94,6 @@ write (int fd, char const* s, int n)
        : "" (fd), "" (s), "" (n)
        : "eax", "ebx", "ecx", "edx"
        );
-  
 }
 
 void *
@@ -115,7 +141,7 @@ strcmp (char const* a, char const* b)
 }
 
 int
-getc ()
+getchar ()
 {
   return read (g_stdin, 1);
 }
@@ -123,14 +149,20 @@ getc ()
 int
 puts (char const* s)
 {
-  write (STDOUT, s, strlen (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));
+  //write (STDERR, s, strlen (s));
+  //int i = write (STDERR, s, strlen (s));
+  int i = strlen (s);
+  write (2, s, i);
   return 0;
 }
 
@@ -649,12 +681,6 @@ a = acons (make_symbol (scm_cdr.string), cell_cdr, a);
   return a;
 }
 
-int
-getchar ()
-{
-  return getc (g_stdin);
-}
-
 SCM
 bload_env (SCM a) ///((internal))
 {

scaffold/tiny-mes.c

@@ -0,0 +1,469 @@
+/* -*-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
+
+#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
+
+int g_stdin = 0;
+
+#if __GNUC__
+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;
+}
+
+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)
+{
+  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
+getchar ()
+{
+  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"
+       );
+}
+
+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;
+}
+
+#endif
+
+void
+assert_fail (char* s)
+{
+  eputs ("assert fail:");
+  eputs (s);
+  eputs ("\n");
+  *((int*)0) = 0;
+}
+
+#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;
+
+#if __GNUC__
+int g_debug = 0;
+#endif
+
+int g_free = 0;
+
+SCM g_symbols = 0;
+SCM g_stack = 0;
+SCM r0 = 0; // a/env
+SCM r1 = 0; // param 1
+SCM r2 = 0; // save 2+load/dump
+SCM r3 = 0; // continuation
+
+typedef int SCM;
+#if __NYACC__ || FIXME_NYACC
+enum type_t {CHAR, CLOSURE, CONTINUATION, FUNCTION, 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
+typedef SCM (*function0_t) (void);
+typedef SCM (*function1_t) (SCM);
+typedef SCM (*function2_t) (SCM, SCM);
+typedef SCM (*function3_t) (SCM, SCM, SCM);
+typedef SCM (*functionn_t) (SCM);
+typedef struct function_struct {
+  union {
+    function0_t function0;
+    function1_t function1;
+    function2_t function2;
+    function3_t function3;
+    functionn_t functionn;
+  } data;
+  int arity;
+} function_t;
+struct scm;
+
+typedef struct scm_struct {
+  enum type_t type;
+  union {
+    char const *name;
+    SCM string;
+    SCM car;
+    SCM ref;
+    int length;
+  } NYACC_CAR;
+  union {
+    int value;
+    int function;
+    SCM cdr;
+    SCM closure;
+    SCM continuation;
+    SCM macro;
+    SCM vector;
+    int hits;
+  } NYACC_CDR;
+} scm;
+
+char arena[200000];
+scm *g_cells = (scm*)arena;
+
+#define CAR(x) g_cells[x].car
+
+#define CDR(x) g_cells[x].cdr
+
+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 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));}
+
+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;
+}
+
+// Environment setup
+
+SCM
+mes_environment ()
+{
+  return 0;
+}
+
+SCM
+mes_builtins (SCM a)
+{
+  return a;
+}
+
+SCM
+bload_env (SCM a) ///((internal))
+{
+  puts ("bload_env\n");
+  g_stdin = open ("module/mes/read-0.mo", 0);
+  if (g_stdin < 0) {eputs ("no such file: module/mes/read-0.mo\n");return 1;} 
+#if __GNUC__
+  puts ("fd: ");
+  puts (itoa (g_stdin));
+  puts ("\n");
+  //g_stdin = g_stdin ? g_stdin : fopen (PREFIX "module/mes/read-0.mo", "r");
+#endif
+  char *p = (char*)g_cells;
+
+  // int x;
+  // x = getchar ();
+  // if (x == 'M') puts ("M");
+  // x = getchar ();
+  // if (x == 'E') puts ("E");
+  // x = getchar ();
+  // if (x == 'S') puts ("S");
+  
+  assert (getchar () == 'M');
+  assert (getchar () == 'E');
+  assert (getchar () == 'S');
+  puts ("GOT MES\n");
+  g_stack = getchar () << 8;
+  g_stack += getchar ();
+  int c = getchar ();
+  while (c != -1)
+    {
+      *p++ = c;
+      c = getchar ();
+    }
+  g_free = (p-(char*)g_cells) / sizeof (scm);
+  gc_peek_frame ();
+  g_symbols = r1;
+  g_stdin = STDIN;
+  r0 = mes_builtins (r0);
+
+#if __GNUC__
+  puts ("cells read: ");
+  puts (itoa (g_free));
+  puts ("\n");
+#endif
+  return r2;
+}
+
+int
+main (int argc, char *argv[])
+{
+#if __GNUC__
+  g_debug = (int)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\n");
+  if (argc > 1 && !strcmp (argv[1], "--version")) {eputs ("Mes ");eputs (VERSION);return eputs ("\n");};
+
+  if (argc > 1 && !strcmp (argv[1], "--help")) return eputs ("Usage: mes [--dump|--load] < FILE\n");
+
+
+#if __GNUC__
+  g_stdin = STDIN;
+  r0 = mes_environment ();
+#endif
+
+#if MES_MINI
+  puts ("Hello tiny-mes!\n");
+  SCM program = 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 ();
+
+  push_cc (r2, cell_unspecified, r0, cell_unspecified);
+  r3 = cell_vm_begin;
+  r1 = eval_apply ();
+  stderr_ (r1);
+
+  eputs ("\n");
+  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