src/instructions.c

   1 /* Copyright (C) 2000 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 #include <string.h>
  43 #include "instructions.h"
  44
  45 struct scm_instruction scm_instruction_table[] = {
  46 #define VM_INSTRUCTION_TO_TABLE 1
  47 #include "vm_expand.h"
  48 #include "vm_system.i"
  49 #include "vm_scheme.i"
  50 #include "vm_number.i"
  51 #include "vm_loader.i"
  52 #undef VM_INSTRUCTION_TO_TABLE
  53   {scm_op_last}
  54 };
  55
  56 /* C interface */
  57
  58 struct scm_instruction *
  59 scm_lookup_instruction (SCM name)
  60 {
  61   struct scm_instruction *ip;
  62   if (SCM_SYMBOLP (name))
  63     for (ip = scm_instruction_table; ip->opcode != scm_op_last; ip++)
  64       if (strcmp (ip->name, SCM_SYMBOL_CHARS (name)) == 0)
  65         return ip;
  66   return 0;
  67 }
  68
  69 /* Scheme interface */
  70
  71 SCM_DEFINE (scm_instruction_list, "instruction-list", 0, 0, 0,
  72             (void),
  73             "")
  74 #define FUNC_NAME s_scm_instruction_list
  75 {
  76   SCM list = SCM_EOL;
  77   struct scm_instruction *ip;
  78   for (ip = scm_instruction_table; ip->opcode != scm_op_last; ip++)
  79     list = scm_cons (scm_str2symbol (ip->name), list);
  80   return scm_reverse_x (list, SCM_EOL);
  81 }
  82 #undef FUNC_NAME
  83
  84 SCM_DEFINE (scm_instruction_p, "instruction?", 1, 0, 0,
  85             (SCM obj),
  86             "")
  87 #define FUNC_NAME s_scm_instruction_p
  88 {
  89   return SCM_BOOL (SCM_INSTRUCTION_P (obj));
  90 }
  91 #undef FUNC_NAME
  92
  93 SCM_DEFINE (scm_instruction_length, "instruction-length", 1, 0, 0,
  94             (SCM inst),
  95             "")
  96 #define FUNC_NAME s_scm_instruction_length
  97 {
  98   SCM_VALIDATE_INSTRUCTION (1, inst);
  99   return SCM_MAKINUM (SCM_INSTRUCTION_LENGTH (inst));
 100 }
 101 #undef FUNC_NAME
 102
 103 SCM_DEFINE (scm_instruction_pops, "instruction-pops", 1, 0, 0,
 104             (SCM inst),
 105             "")
 106 #define FUNC_NAME s_scm_instruction_pops
 107 {
 108   SCM_VALIDATE_INSTRUCTION (1, inst);
 109   return SCM_MAKINUM (SCM_INSTRUCTION_POPS (inst));
 110 }
 111 #undef FUNC_NAME
 112
 113 SCM_DEFINE (scm_instruction_pushes, "instruction-pushes", 1, 0, 0,
 114             (SCM inst),
 115             "")
 116 #define FUNC_NAME s_scm_instruction_pushes
 117 {
 118   SCM_VALIDATE_INSTRUCTION (1, inst);
 119   return SCM_MAKINUM (SCM_INSTRUCTION_PUSHES (inst));
 120 }
 121 #undef FUNC_NAME
 122
 123 SCM_DEFINE (scm_instruction_to_opcode, "instruction->opcode", 1, 0, 0,
 124             (SCM inst),
 125             "")
 126 #define FUNC_NAME s_scm_instruction_to_opcode
 127 {
 128   SCM_VALIDATE_INSTRUCTION (1, inst);
 129   return SCM_MAKINUM (SCM_INSTRUCTION_OPCODE (inst));
 130 }
 131 #undef FUNC_NAME
 132
 133 SCM_DEFINE (scm_opcode_to_instruction, "opcode->instruction", 1, 0, 0,
 134             (SCM op),
 135             "")
 136 #define FUNC_NAME s_scm_opcode_to_instruction
 137 {
 138   int i;
 139   SCM_VALIDATE_INUM (1, op);
 140   i = SCM_INUM (op);
 141   SCM_ASSERT_RANGE (1, op, 0 <= i && i < scm_op_last);
 142   return scm_str2symbol (scm_instruction_table[i].name);
 143 }
 144 #undef FUNC_NAME
 145
 146 void
 147 scm_init_instructions (void)
 148 {
 149 #ifndef SCM_MAGIC_SNARFER
 150 #include "instructions.x"
 151 #endif
 152 }
 153
 154 /*
 155   Local Variables:
 156   c-file-style: "gnu"
 157   End:
 158 */