libguile/instructions.c

   1 /* Copyright (C) 2001 Free Software Foundation, Inc.
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2, or (at your option)
   6  * any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this software; see the file COPYING.  If not, write to
  15  * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  16  * Boston, MA 02111-1307 USA
  17  *
  18  * As a special exception, the Free Software Foundation gives permission
  19  * for additional uses of the text contained in its release of GUILE.
  20  *
  21  * The exception is that, if you link the GUILE library with other files
  22  * to produce an executable, this does not by itself cause the
  23  * resulting executable to be covered by the GNU General Public License.
  24  * Your use of that executable is in no way restricted on account of
  25  * linking the GUILE library code into it.
  26  *
  27  * This exception does not however invalidate any other reasons why
  28  * the executable file might be covered by the GNU General Public License.
  29  *
  30  * This exception applies only to the code released by the
  31  * Free Software Foundation under the name GUILE.  If you copy
  32  * code from other Free Software Foundation releases into a copy of
  33  * GUILE, as the General Public License permits, the exception does
  34  * not apply to the code that you add in this way.  To avoid misleading
  35  * anyone as to the status of such modified files, you must delete
  36  * this exception notice from them.
  37  *
  38  * If you write modifications of your own for GUILE, it is your choice
  39  * whether to permit this exception to apply to your modifications.
  40  * If you do not wish that, delete this exception notice.  */
  41
  42 #if HAVE_CONFIG_H
  43 #  include <config.h>
  44 #endif
  45
  46 #include <string.h>
  47 #include "vm-bootstrap.h"
  48 #include "instructions.h"
  49
  50 struct scm_instruction scm_instruction_table[] = {
  51 #define VM_INSTRUCTION_TO_TABLE 1
  52 #include "vm-expand.h"
  53 #include "vm-i-system.i"
  54 #include "vm-i-scheme.i"
  55 #include "vm-i-loader.i"
  56 #undef VM_INSTRUCTION_TO_TABLE
  57   {scm_op_last}
  58 };
  59
  60 /* C interface */
  61
  62 struct scm_instruction *
  63 scm_lookup_instruction (SCM name)
  64 {
  65   struct scm_instruction *ip;
  66   char *symbol;
  67
  68   if (SCM_SYMBOLP (name))
  69     for (ip = scm_instruction_table; ip->opcode != scm_op_last; ip++)
  70       {
  71         symbol = scm_to_locale_string (scm_symbol_to_string (name));
  72         if ((symbol) && (strcmp (ip->name, symbol) == 0))
  73           {
  74             free (symbol);
  75             return ip;
  76           }
  77
  78         if (symbol)
  79           free (symbol);
  80       }
  81
  82   return 0;
  83 }
  84
  85 /* Scheme interface */
  86
  87 SCM_DEFINE (scm_instruction_list, "instruction-list", 0, 0, 0,
  88             (void),
  89             "")
  90 #define FUNC_NAME s_scm_instruction_list
  91 {
  92   SCM list = SCM_EOL;
  93   struct scm_instruction *ip;
  94   for (ip = scm_instruction_table; ip->opcode != scm_op_last; ip++)
  95     list = scm_cons (scm_from_locale_symbol (ip->name), list);
  96   return scm_reverse_x (list, SCM_EOL);
  97 }
  98 #undef FUNC_NAME
  99
 100 SCM_DEFINE (scm_instruction_p, "instruction?", 1, 0, 0,
 101             (SCM obj),
 102             "")
 103 #define FUNC_NAME s_scm_instruction_p
 104 {
 105   return SCM_BOOL (SCM_INSTRUCTION_P (obj));
 106 }
 107 #undef FUNC_NAME
 108
 109 SCM_DEFINE (scm_instruction_length, "instruction-length", 1, 0, 0,
 110             (SCM inst),
 111             "")
 112 #define FUNC_NAME s_scm_instruction_length
 113 {
 114   SCM_VALIDATE_INSTRUCTION (1, inst);
 115   return SCM_I_MAKINUM (SCM_INSTRUCTION_LENGTH (inst));
 116 }
 117 #undef FUNC_NAME
 118
 119 SCM_DEFINE (scm_instruction_pops, "instruction-pops", 1, 0, 0,
 120             (SCM inst),
 121             "")
 122 #define FUNC_NAME s_scm_instruction_pops
 123 {
 124   SCM_VALIDATE_INSTRUCTION (1, inst);
 125   return SCM_I_MAKINUM (SCM_INSTRUCTION_POPS (inst));
 126 }
 127 #undef FUNC_NAME
 128
 129 SCM_DEFINE (scm_instruction_pushes, "instruction-pushes", 1, 0, 0,
 130             (SCM inst),
 131             "")
 132 #define FUNC_NAME s_scm_instruction_pushes
 133 {
 134   SCM_VALIDATE_INSTRUCTION (1, inst);
 135   return SCM_I_MAKINUM (SCM_INSTRUCTION_PUSHES (inst));
 136 }
 137 #undef FUNC_NAME
 138
 139 SCM_DEFINE (scm_instruction_to_opcode, "instruction->opcode", 1, 0, 0,
 140             (SCM inst),
 141             "")
 142 #define FUNC_NAME s_scm_instruction_to_opcode
 143 {
 144   SCM_VALIDATE_INSTRUCTION (1, inst);
 145   return SCM_I_MAKINUM (SCM_INSTRUCTION_OPCODE (inst));
 146 }
 147 #undef FUNC_NAME
 148
 149 SCM_DEFINE (scm_opcode_to_instruction, "opcode->instruction", 1, 0, 0,
 150             (SCM op),
 151             "")
 152 #define FUNC_NAME s_scm_opcode_to_instruction
 153 {
 154   int i;
 155   SCM_MAKE_VALIDATE (1, op, I_INUMP);
 156   i = SCM_I_INUM (op);
 157   SCM_ASSERT_RANGE (1, op, 0 <= i && i < scm_op_last);
 158   return scm_from_locale_symbol (scm_instruction_table[i].name);
 159 }
 160 #undef FUNC_NAME
 161
 162 void
 163 scm_bootstrap_instructions (void)
 164 {
 165 }
 166
 167 void
 168 scm_init_instructions (void)
 169 {
 170   scm_bootstrap_vm ();
 171
 172 #ifndef SCM_MAGIC_SNARFER
 173 #include "instructions.x"
 174 #endif
 175 }
 176
 177 /*
 178   Local Variables:
 179   c-file-style: "gnu"
 180   End:
 181 */