libguile/vm-i-loader.c

   1 /* Copyright (C) 2001,2008,2009 Free Software Foundation, Inc.
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public License
   5  * as published by the Free Software Foundation; either version 3 of
   6  * the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  16  * 02110-1301 USA
  17  */
  18
  19 /* FIXME! Need to check that the fetch is within the current program */
  20
  21 /* This file is included in vm_engine.c */
  22
  23 VM_DEFINE_LOADER (80, load_unsigned_integer, "load-unsigned-integer")
  24 {
  25   size_t len;
  26
  27   FETCH_LENGTH (len);
  28   if (SCM_LIKELY (len <= 8))
  29     {
  30       scm_t_uint64 val = 0;
  31       while (len-- > 0)
  32         val = (val << 8U) + FETCH ();
  33       SYNC_REGISTER ();
  34       PUSH (scm_from_uint64 (val));
  35       NEXT;
  36     }
  37   else
  38     SCM_MISC_ERROR ("load-unsigned-integer: not implemented yet", SCM_EOL);
  39 }
  40
  41 VM_DEFINE_LOADER (81, load_integer, "load-integer")
  42 {
  43   size_t len;
  44
  45   FETCH_LENGTH (len);
  46   if (SCM_LIKELY (len <= 4))
  47     {
  48       int val = 0;
  49       while (len-- > 0)
  50         val = (val << 8) + FETCH ();
  51       SYNC_REGISTER ();
  52       PUSH (scm_from_int (val));
  53       NEXT;
  54     }
  55   else
  56     SCM_MISC_ERROR ("load-integer: not implemented yet", SCM_EOL);
  57 }
  58
  59 VM_DEFINE_LOADER (82, load_number, "load-number")
  60 {
  61   size_t len;
  62
  63   FETCH_LENGTH (len);
  64   SYNC_REGISTER ();
  65   PUSH (scm_string_to_number (scm_from_locale_stringn ((char *)ip, len),
  66                               SCM_UNDEFINED /* radix = 10 */));
  67   /* Was: scm_istring2number (ip, len, 10)); */
  68   ip += len;
  69   NEXT;
  70 }
  71
  72 VM_DEFINE_LOADER (83, load_string, "load-string")
  73 {
  74   size_t len;
  75   int width;
  76   SCM str;
  77
  78   FETCH_LENGTH (len);
  79   FETCH_WIDTH (width);
  80   SYNC_REGISTER ();
  81   if (width == 1)
  82     {
  83       char *buf;
  84       str = scm_i_make_string (len, &buf);
  85       memcpy (buf, (char *) ip, len);
  86     }
  87   else if (width == 4)
  88     {
  89       scm_t_wchar *wbuf;
  90       str = scm_i_make_wide_string (len, &wbuf);
  91       memcpy ((char *) wbuf, (char *) ip, len * width);
  92     }
  93   else
  94     SCM_MISC_ERROR ("load-string: invalid character width", SCM_EOL);
  95   PUSH (str);
  96   ip += len * width;
  97   NEXT;
  98 }
  99
 100 VM_DEFINE_LOADER (84, load_symbol, "load-symbol")
 101 {
 102   size_t len;
 103   int width;
 104   SCM str;
 105   FETCH_LENGTH (len);
 106   FETCH_WIDTH (width);
 107   SYNC_REGISTER ();
 108   if (width == 1)
 109     {
 110       char *buf;
 111       str = scm_i_make_string (len, &buf);
 112       memcpy (buf, (char *) ip, len);
 113     }
 114   else if (width == 4)
 115     {
 116       scm_t_wchar *wbuf;
 117       str = scm_i_make_wide_string (len, &wbuf);
 118       memcpy ((char *) wbuf, (char *) ip, len * width);
 119     }
 120   else
 121     SCM_MISC_ERROR ("load-symbol: invalid character width", SCM_EOL);
 122   PUSH (scm_string_to_symbol (str));
 123   ip += len * width;
 124   NEXT;
 125 }
 126
 127 VM_DEFINE_LOADER (85, load_keyword, "load-keyword")
 128 {
 129   size_t len;
 130   int width;
 131   SCM str;
 132   FETCH_LENGTH (len);
 133   FETCH_WIDTH (width);
 134   SYNC_REGISTER ();
 135   if (width == 1)
 136     {
 137       char *buf;
 138       str = scm_i_make_string (len, &buf);
 139       memcpy (buf, (char *) ip, len);
 140     }
 141   else if (width == 4)
 142     {
 143       scm_t_wchar *wbuf;
 144       str = scm_i_make_wide_string (len, &wbuf);
 145       memcpy ((char *) wbuf, (char *) ip, len * width);
 146     }
 147   else
 148     SCM_MISC_ERROR ("load-keyword: invalid character width", SCM_EOL);
 149   PUSH (scm_symbol_to_keyword (scm_string_to_symbol (str)));
 150   ip += len * width;
 151   NEXT;
 152 }
 153
 154 VM_DEFINE_LOADER (86, load_program, "load-program")
 155 {
 156   scm_t_uint32 len;
 157   SCM objs, objcode;
 158
 159   POP (objs);
 160   SYNC_REGISTER ();
 161
 162   if (scm_is_vector (objs) && scm_is_false (scm_c_vector_ref (objs, 0)))
 163     scm_c_vector_set_x (objs, 0, scm_current_module ());
 164
 165   objcode = scm_c_make_objcode_slice (SCM_PROGRAM_OBJCODE (fp[-1]), ip);
 166   len = sizeof (struct scm_objcode) + SCM_OBJCODE_TOTAL_LEN (objcode);
 167
 168   PUSH (scm_make_program (objcode, objs, SCM_BOOL_F));
 169
 170   ip += len;
 171
 172   NEXT;
 173 }
 174
 175 VM_DEFINE_INSTRUCTION (87, link_now, "link-now", 0, 1, 1)
 176 {
 177   SCM what;
 178   POP (what);
 179   SYNC_REGISTER ();
 180   PUSH (resolve_variable (what, scm_current_module ()));
 181   NEXT;
 182 }
 183
 184 VM_DEFINE_LOADER (88, define, "define")
 185 {
 186   SCM str, sym;
 187   size_t len;
 188
 189   int width;
 190   FETCH_LENGTH (len);
 191   FETCH_WIDTH (width);
 192   SYNC_REGISTER ();
 193   if (width == 1)
 194     {
 195       char *buf;
 196       str = scm_i_make_string (len, &buf);
 197       memcpy (buf, (char *) ip, len);
 198     }
 199   else if (width == 4)
 200     {
 201       scm_t_wchar *wbuf;
 202       str = scm_i_make_wide_string (len, &wbuf);
 203       memcpy ((char *) wbuf, (char *) ip, len * width);
 204     }
 205   else
 206     SCM_MISC_ERROR ("load define: invalid character width", SCM_EOL);
 207   sym = scm_string_to_symbol (str);
 208   ip += len * width;
 209
 210   SYNC_REGISTER ();
 211   PUSH (scm_sym2var (sym, scm_current_module_lookup_closure (), SCM_BOOL_T));
 212   NEXT;
 213 }
 214
 215 VM_DEFINE_LOADER (89, load_array, "load-array")
 216 {
 217   SCM type, shape;
 218   size_t len;
 219   FETCH_LENGTH (len);
 220   POP (shape);
 221   POP (type);
 222   SYNC_REGISTER ();
 223   PUSH (scm_from_contiguous_typed_array (type, shape, ip, len));
 224   ip += len;
 225   NEXT;
 226 }
 227
 228 /*
 229 (defun renumber-ops ()
 230   "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences"
 231   (interactive "")
 232   (save-excursion
 233     (let ((counter 79)) (goto-char (point-min))
 234       (while (re-search-forward "^VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t)
 235         (replace-match
 236          (number-to-string (setq counter (1+ counter)))
 237           t t nil 1)))))
 238 */
 239
 240 /*
 241   Local Variables:
 242   c-file-style: "gnu"
 243   End:
 244 */