Commit | Line | Data |
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f1814567 C |
1 | /* Generate from machine description: |
2 | ||
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 Free Software Foundation, Inc. | |
6 | ||
7 | This file is part of GNU CC. | |
8 | ||
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) | |
12 | any later version. | |
13 | ||
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. | |
18 | ||
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. */ | |
22 | ||
23 | ||
24 | #include <stdio.h> | |
25 | #include "hconfig.h" | |
26 | #include "rtl.h" | |
27 | #include "obstack.h" | |
28 | ||
29 | static struct obstack obstack; | |
30 | struct obstack *rtl_obstack = &obstack; | |
31 | ||
32 | #define obstack_chunk_alloc xmalloc | |
33 | #define obstack_chunk_free free | |
34 | ||
35 | extern void free (); | |
36 | extern rtx read_rtx (); | |
37 | ||
38 | char *xmalloc (); | |
39 | static void fatal (); | |
40 | void fancy_abort (); | |
41 | ||
42 | static int insn_code_number; | |
43 | ||
44 | static void | |
45 | gen_insn (insn) | |
46 | rtx insn; | |
47 | { | |
48 | /* Don't mention instructions whose names are the null string. | |
49 | They are in the machine description just to be recognized. */ | |
50 | if (strlen (XSTR (insn, 0)) != 0) | |
51 | printf (" CODE_FOR_%s = %d,\n", XSTR (insn, 0), | |
52 | insn_code_number); | |
53 | } | |
54 | ||
55 | char * | |
56 | xmalloc (size) | |
57 | unsigned size; | |
58 | { | |
59 | register char *val = (char *) malloc (size); | |
60 | ||
61 | if (val == 0) | |
62 | fatal ("virtual memory exhausted"); | |
63 | return val; | |
64 | } | |
65 | ||
66 | char * | |
67 | xrealloc (ptr, size) | |
68 | char *ptr; | |
69 | unsigned size; | |
70 | { | |
71 | char *result = (char *) realloc (ptr, size); | |
72 | if (!result) | |
73 | fatal ("virtual memory exhausted"); | |
74 | return result; | |
75 | } | |
76 | ||
77 | static void | |
78 | fatal (s, a1, a2) | |
79 | char *s; | |
80 | { | |
81 | fprintf (stderr, "gencodes: "); | |
82 | fprintf (stderr, s, a1, a2); | |
83 | fprintf (stderr, "\n"); | |
84 | exit (FATAL_EXIT_CODE); | |
85 | } | |
86 | ||
87 | /* More 'friendly' abort that prints the line and file. | |
88 | config.h can #define abort fancy_abort if you like that sort of thing. */ | |
89 | ||
90 | void | |
91 | fancy_abort () | |
92 | { | |
93 | fatal ("Internal gcc abort."); | |
94 | } | |
95 | \f | |
96 | int | |
97 | main (argc, argv) | |
98 | int argc; | |
99 | char **argv; | |
100 | { | |
101 | rtx desc; | |
102 | FILE *infile; | |
103 | register int c; | |
104 | ||
105 | obstack_init (rtl_obstack); | |
106 | ||
107 | if (argc <= 1) | |
108 | fatal ("No input file name."); | |
109 | ||
110 | infile = fopen (argv[1], "r"); | |
111 | if (infile == 0) | |
112 | { | |
113 | perror (argv[1]); | |
114 | exit (FATAL_EXIT_CODE); | |
115 | } | |
116 | ||
117 | init_rtl (); | |
118 | ||
119 | printf ("/* Generated automatically by the program `gencodes'\n\ | |
120 | from the machine description file `md'. */\n\n"); | |
121 | ||
122 | printf ("#ifndef MAX_INSN_CODE\n\n"); | |
123 | ||
124 | /* Read the machine description. */ | |
125 | ||
126 | insn_code_number = 0; | |
127 | printf ("enum insn_code {\n"); | |
128 | ||
129 | while (1) | |
130 | { | |
131 | c = read_skip_spaces (infile); | |
132 | if (c == EOF) | |
133 | break; | |
134 | ungetc (c, infile); | |
135 | ||
136 | desc = read_rtx (infile); | |
137 | if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND) | |
138 | { | |
139 | gen_insn (desc); | |
140 | insn_code_number++; | |
141 | } | |
142 | if (GET_CODE (desc) == DEFINE_PEEPHOLE | |
143 | || GET_CODE (desc) == DEFINE_SPLIT) | |
144 | { | |
145 | insn_code_number++; | |
146 | } | |
147 | } | |
148 | ||
149 | printf (" CODE_FOR_nothing };\n"); | |
150 | ||
151 | printf ("\n#define MAX_INSN_CODE ((int) CODE_FOR_nothing)\n"); | |
152 | ||
153 | printf ("#endif /* MAX_INSN_CODE */\n"); | |
154 | ||
155 | fflush (stdout); | |
156 | exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE); | |
157 | /* NOTREACHED */ | |
158 | return 0; | |
159 | } |