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41299f41 TW |
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. | |
6b6ca844 | 5 | Copyright (C) 1987, 1991, 1995 Free Software Foundation, Inc. |
41299f41 TW |
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 | |
a35311b0 RK |
21 | the Free Software Foundation, 59 Temple Place - Suite 330, |
22 | Boston, MA 02111-1307, USA. */ | |
41299f41 TW |
23 | |
24 | ||
25 | #include <stdio.h> | |
0d64891c | 26 | #include "hconfig.h" |
41299f41 TW |
27 | #include "rtl.h" |
28 | #include "obstack.h" | |
29 | ||
30 | static struct obstack obstack; | |
31 | struct obstack *rtl_obstack = &obstack; | |
32 | ||
33 | #define obstack_chunk_alloc xmalloc | |
34 | #define obstack_chunk_free free | |
35 | ||
36 | extern void free (); | |
13884488 | 37 | extern rtx read_rtx (); |
41299f41 TW |
38 | |
39 | char *xmalloc (); | |
40 | static void fatal (); | |
41 | void fancy_abort (); | |
42 | ||
43 | static int insn_code_number; | |
44 | ||
45 | static void | |
46 | gen_insn (insn) | |
47 | rtx insn; | |
48 | { | |
6b6ca844 RK |
49 | /* Don't mention instructions whose names are the null string |
50 | or begin with '*'. They are in the machine description just | |
51 | to be recognized. */ | |
52 | if (XSTR (insn, 0)[0] != 0 && XSTR (insn, 0)[0] != '*') | |
41299f41 TW |
53 | printf (" CODE_FOR_%s = %d,\n", XSTR (insn, 0), |
54 | insn_code_number); | |
55 | } | |
56 | ||
57 | char * | |
58 | xmalloc (size) | |
59 | unsigned size; | |
60 | { | |
61 | register char *val = (char *) malloc (size); | |
62 | ||
63 | if (val == 0) | |
64 | fatal ("virtual memory exhausted"); | |
65 | return val; | |
66 | } | |
67 | ||
68 | char * | |
69 | xrealloc (ptr, size) | |
70 | char *ptr; | |
71 | unsigned size; | |
72 | { | |
73 | char *result = (char *) realloc (ptr, size); | |
74 | if (!result) | |
75 | fatal ("virtual memory exhausted"); | |
76 | return result; | |
77 | } | |
78 | ||
79 | static void | |
80 | fatal (s, a1, a2) | |
81 | char *s; | |
82 | { | |
83 | fprintf (stderr, "gencodes: "); | |
84 | fprintf (stderr, s, a1, a2); | |
85 | fprintf (stderr, "\n"); | |
86 | exit (FATAL_EXIT_CODE); | |
87 | } | |
88 | ||
89 | /* More 'friendly' abort that prints the line and file. | |
90 | config.h can #define abort fancy_abort if you like that sort of thing. */ | |
91 | ||
92 | void | |
93 | fancy_abort () | |
94 | { | |
95 | fatal ("Internal gcc abort."); | |
96 | } | |
97 | \f | |
98 | int | |
99 | main (argc, argv) | |
100 | int argc; | |
101 | char **argv; | |
102 | { | |
103 | rtx desc; | |
104 | FILE *infile; | |
41299f41 TW |
105 | register int c; |
106 | ||
107 | obstack_init (rtl_obstack); | |
108 | ||
109 | if (argc <= 1) | |
110 | fatal ("No input file name."); | |
111 | ||
112 | infile = fopen (argv[1], "r"); | |
113 | if (infile == 0) | |
114 | { | |
115 | perror (argv[1]); | |
116 | exit (FATAL_EXIT_CODE); | |
117 | } | |
118 | ||
119 | init_rtl (); | |
120 | ||
121 | printf ("/* Generated automatically by the program `gencodes'\n\ | |
122 | from the machine description file `md'. */\n\n"); | |
123 | ||
124 | printf ("#ifndef MAX_INSN_CODE\n\n"); | |
125 | ||
126 | /* Read the machine description. */ | |
127 | ||
128 | insn_code_number = 0; | |
129 | printf ("enum insn_code {\n"); | |
130 | ||
131 | while (1) | |
132 | { | |
133 | c = read_skip_spaces (infile); | |
134 | if (c == EOF) | |
135 | break; | |
136 | ungetc (c, infile); | |
137 | ||
138 | desc = read_rtx (infile); | |
139 | if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND) | |
140 | { | |
141 | gen_insn (desc); | |
142 | insn_code_number++; | |
143 | } | |
144 | if (GET_CODE (desc) == DEFINE_PEEPHOLE | |
145 | || GET_CODE (desc) == DEFINE_SPLIT) | |
146 | { | |
147 | insn_code_number++; | |
148 | } | |
149 | } | |
150 | ||
151 | printf (" CODE_FOR_nothing };\n"); | |
152 | ||
153 | printf ("\n#define MAX_INSN_CODE ((int) CODE_FOR_nothing)\n"); | |
154 | ||
155 | printf ("#endif /* MAX_INSN_CODE */\n"); | |
156 | ||
157 | fflush (stdout); | |
158 | exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE); | |
159 | /* NOTREACHED */ | |
160 | return 0; | |
161 | } |