Mercurial > hg > CbC > CbC_gcc
annotate gcc/genflags.c @ 128:fe568345ddd5
fix CbC-example
| author | mir3636 |
|---|---|
| date | Wed, 11 Apr 2018 19:32:28 +0900 |
| parents | 04ced10e8804 |
| children | 84e7813d76e9 |
| rev | line source |
|---|---|
| 0 | 1 /* Generate from machine description: |
| 2 - some flags HAVE_... saying which simple standard instructions are | |
| 3 available for this machine. | |
| 111 | 4 Copyright (C) 1987-2017 Free Software Foundation, Inc. |
| 0 | 5 |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 | |
| 23 #include "bconfig.h" | |
| 24 #include "system.h" | |
| 25 #include "coretypes.h" | |
| 26 #include "tm.h" | |
| 27 #include "rtl.h" | |
| 28 #include "obstack.h" | |
| 29 #include "errors.h" | |
|
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
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30 #include "read-md.h" |
| 0 | 31 #include "gensupport.h" |
| 32 | |
| 33 /* Obstack to remember insns with. */ | |
| 34 static struct obstack obstack; | |
| 35 | |
| 36 /* Max size of names encountered. */ | |
| 37 static int max_id_len; | |
| 38 | |
| 39 /* Max operand encountered in a scan over some insn. */ | |
| 40 static int max_opno; | |
| 41 | |
| 42 static void max_operand_1 (rtx); | |
| 43 static int num_operands (rtx); | |
| 44 static void gen_proto (rtx); | |
| 45 | |
| 46 /* Count the number of match_operand's found. */ | |
| 47 | |
| 48 static void | |
| 49 max_operand_1 (rtx x) | |
| 50 { | |
| 51 RTX_CODE code; | |
| 52 int i; | |
| 53 int len; | |
| 54 const char *fmt; | |
| 55 | |
| 56 if (x == 0) | |
| 57 return; | |
| 58 | |
| 59 code = GET_CODE (x); | |
| 60 | |
| 61 if (code == MATCH_OPERAND || code == MATCH_OPERATOR | |
| 62 || code == MATCH_PARALLEL) | |
| 63 max_opno = MAX (max_opno, XINT (x, 0)); | |
| 64 | |
| 65 fmt = GET_RTX_FORMAT (code); | |
| 66 len = GET_RTX_LENGTH (code); | |
| 67 for (i = 0; i < len; i++) | |
| 68 { | |
| 69 if (fmt[i] == 'e' || fmt[i] == 'u') | |
| 70 max_operand_1 (XEXP (x, i)); | |
| 71 else if (fmt[i] == 'E') | |
| 72 { | |
| 73 int j; | |
| 74 for (j = 0; j < XVECLEN (x, i); j++) | |
| 75 max_operand_1 (XVECEXP (x, i, j)); | |
| 76 } | |
| 77 } | |
| 78 } | |
| 79 | |
| 80 static int | |
| 81 num_operands (rtx insn) | |
| 82 { | |
| 83 int len = XVECLEN (insn, 1); | |
| 84 int i; | |
| 85 | |
| 86 max_opno = -1; | |
| 87 | |
| 88 for (i = 0; i < len; i++) | |
| 89 max_operand_1 (XVECEXP (insn, 1, i)); | |
| 90 | |
| 91 return max_opno + 1; | |
| 92 } | |
| 93 | |
| 94 /* Print out prototype information for a generator function. If the | |
| 95 insn pattern has been elided, print out a dummy generator that | |
| 96 does nothing. */ | |
| 97 | |
| 98 static void | |
| 99 gen_proto (rtx insn) | |
| 100 { | |
| 101 int num = num_operands (insn); | |
| 102 int i; | |
| 103 const char *name = XSTR (insn, 0); | |
| 104 int truth = maybe_eval_c_test (XSTR (insn, 2)); | |
| 105 | |
| 106 if (truth != 0) | |
| 107 printf ("extern rtx gen_%-*s (", max_id_len, name); | |
| 108 else | |
| 109 printf ("static inline rtx gen_%-*s (", max_id_len, name); | |
| 110 | |
| 111 if (num == 0) | |
| 112 fputs ("void", stdout); | |
| 113 else | |
| 114 { | |
| 115 for (i = 1; i < num; i++) | |
| 116 fputs ("rtx, ", stdout); | |
| 117 | |
| 118 fputs ("rtx", stdout); | |
| 119 } | |
| 120 | |
| 121 puts (");"); | |
| 122 | |
| 123 /* Some back ends want to take the address of generator functions, | |
| 124 so we cannot simply use #define for these dummy definitions. */ | |
| 125 if (truth == 0) | |
| 126 { | |
| 127 printf ("static inline rtx\ngen_%s", name); | |
| 128 if (num > 0) | |
| 129 { | |
| 130 putchar ('('); | |
| 131 for (i = 0; i < num-1; i++) | |
| 132 printf ("rtx ARG_UNUSED (%c), ", 'a' + i); | |
| 133 printf ("rtx ARG_UNUSED (%c))\n", 'a' + i); | |
| 134 } | |
| 135 else | |
| 136 puts ("(void)"); | |
| 137 puts ("{\n return 0;\n}"); | |
| 138 } | |
| 139 | |
| 140 } | |
| 141 | |
| 142 static void | |
| 111 | 143 gen_insn (md_rtx_info *info) |
| 0 | 144 { |
| 111 | 145 rtx insn = info->def; |
| 0 | 146 const char *name = XSTR (insn, 0); |
| 147 const char *p; | |
|
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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148 const char *lt, *gt; |
| 0 | 149 int len; |
| 150 int truth = maybe_eval_c_test (XSTR (insn, 2)); | |
| 151 | |
|
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parents:
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152 lt = strchr (name, '<'); |
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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153 if (lt && strchr (lt + 1, '>')) |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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diff
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154 { |
| 111 | 155 error_at (info->loc, "unresolved iterator"); |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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156 return; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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157 } |
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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158 |
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77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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159 gt = strchr (name, '>'); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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160 if (lt || gt) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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161 { |
| 111 | 162 error_at (info->loc, "unmatched angle brackets, likely " |
| 163 "an error in iterator syntax"); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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164 return; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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165 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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166 |
| 0 | 167 /* Don't mention instructions whose names are the null string |
| 168 or begin with '*'. They are in the machine description just | |
| 169 to be recognized. */ | |
| 170 if (name[0] == 0 || name[0] == '*') | |
| 171 return; | |
| 172 | |
| 173 len = strlen (name); | |
| 174 | |
| 175 if (len > max_id_len) | |
| 176 max_id_len = len; | |
| 177 | |
| 178 if (truth == 0) | |
| 179 /* Emit nothing. */; | |
| 180 else if (truth == 1) | |
| 181 printf ("#define HAVE_%s 1\n", name); | |
| 182 else | |
| 183 { | |
| 184 /* Write the macro definition, putting \'s at the end of each line, | |
| 185 if more than one. */ | |
| 186 printf ("#define HAVE_%s (", name); | |
| 187 for (p = XSTR (insn, 2); *p; p++) | |
| 188 { | |
| 189 if (IS_VSPACE (*p)) | |
| 190 fputs (" \\\n", stdout); | |
| 191 else | |
| 192 putchar (*p); | |
| 193 } | |
| 194 fputs (")\n", stdout); | |
| 195 } | |
| 196 | |
| 197 obstack_grow (&obstack, &insn, sizeof (rtx)); | |
| 198 } | |
| 199 | |
| 200 int | |
| 111 | 201 main (int argc, const char **argv) |
| 0 | 202 { |
| 203 rtx dummy; | |
| 204 rtx *insns; | |
| 205 rtx *insn_ptr; | |
| 206 | |
| 207 progname = "genflags"; | |
| 208 obstack_init (&obstack); | |
| 209 | |
| 210 /* We need to see all the possibilities. Elided insns may have | |
| 211 direct calls to their generators in C code. */ | |
| 212 insn_elision = 0; | |
| 213 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
214 if (!init_rtx_reader_args (argc, argv)) |
| 0 | 215 return (FATAL_EXIT_CODE); |
| 216 | |
| 217 puts ("/* Generated automatically by the program `genflags'"); | |
| 218 puts (" from the machine description file `md'. */\n"); | |
| 219 puts ("#ifndef GCC_INSN_FLAGS_H"); | |
| 220 puts ("#define GCC_INSN_FLAGS_H\n"); | |
| 221 | |
| 222 /* Read the machine description. */ | |
| 223 | |
| 111 | 224 md_rtx_info info; |
| 225 while (read_md_rtx (&info)) | |
| 226 switch (GET_CODE (info.def)) | |
| 227 { | |
| 228 case DEFINE_INSN: | |
| 229 case DEFINE_EXPAND: | |
| 230 gen_insn (&info); | |
| 231 break; | |
| 0 | 232 |
| 111 | 233 default: |
| 0 | 234 break; |
| 111 | 235 } |
| 0 | 236 |
| 237 /* Print out the prototypes now. */ | |
| 238 dummy = (rtx) 0; | |
| 239 obstack_grow (&obstack, &dummy, sizeof (rtx)); | |
| 240 insns = XOBFINISH (&obstack, rtx *); | |
| 241 | |
| 242 for (insn_ptr = insns; *insn_ptr; insn_ptr++) | |
| 243 gen_proto (*insn_ptr); | |
| 244 | |
| 111 | 245 puts ("\n#endif /* GCC_INSN_FLAGS_H */"); |
| 0 | 246 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
247 if (have_error || ferror (stdout) || fflush (stdout) || fclose (stdout)) |
| 0 | 248 return FATAL_EXIT_CODE; |
| 249 | |
| 250 return SUCCESS_EXIT_CODE; | |
| 251 } |