1 /* Generate from machine description:
3 - some macros CODE_FOR_... giving the insn_code_number value
4 for each of the defined standard insn names.
5 Copyright (C) 1987, 1991, 1995 Free Software Foundation, Inc.
7 This file is part of GNU CC.
9 GNU CC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 GNU CC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU CC; see the file COPYING. If not, write to
21 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
29 static struct obstack obstack;
30 struct obstack *rtl_obstack = &obstack;
32 #define obstack_chunk_alloc xmalloc
33 #define obstack_chunk_free free
36 extern rtx read_rtx ();
42 static int insn_code_number;
48 /* Don't mention instructions whose names are the null string
49 or begin with '*'. They are in the machine description just
51 if (XSTR (insn, 0)[0] != 0 && XSTR (insn, 0)[0] != '*')
52 printf (" CODE_FOR_%s = %d,\n", XSTR (insn, 0),
60 register char *val = (char *) malloc (size);
63 fatal ("virtual memory exhausted");
72 char *result = (char *) realloc (ptr, size);
74 fatal ("virtual memory exhausted");
82 fprintf (stderr, "gencodes: ");
83 fprintf (stderr, s, a1, a2);
84 fprintf (stderr, "\n");
85 exit (FATAL_EXIT_CODE);
88 /* More 'friendly' abort that prints the line and file.
89 config.h can #define abort fancy_abort if you like that sort of thing. */
94 fatal ("Internal gcc abort.");
106 obstack_init (rtl_obstack);
109 fatal ("No input file name.");
111 infile = fopen (argv[1], "r");
115 exit (FATAL_EXIT_CODE);
120 printf ("/* Generated automatically by the program `gencodes'\n\
121 from the machine description file `md'. */\n\n");
123 printf ("#ifndef MAX_INSN_CODE\n\n");
125 /* Read the machine description. */
127 insn_code_number = 0;
128 printf ("enum insn_code {\n");
132 c = read_skip_spaces (infile);
137 desc = read_rtx (infile);
138 if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
143 if (GET_CODE (desc) == DEFINE_PEEPHOLE
144 || GET_CODE (desc) == DEFINE_SPLIT)
150 printf (" CODE_FOR_nothing };\n");
152 printf ("\n#define MAX_INSN_CODE ((int) CODE_FOR_nothing)\n");
154 printf ("#endif /* MAX_INSN_CODE */\n");
157 exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);