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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [genconstants.c] - Rev 772
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/* Generate from machine description: a series of #define statements, one for each constant named in a (define_constants ...) pattern. Copyright (C) 1987, 1991, 1995, 1998, 1999, 2000, 2001, 2003, 2004, 2007, 2010 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ /* This program does not use gensupport.c because it does not need to look at insn patterns, only (define_constants), and we want to minimize dependencies. */ #include "bconfig.h" #include "system.h" #include "coretypes.h" #include "errors.h" #include "read-md.h" /* Called via traverse_md_constants; emit a #define for the current constant definition. */ static int print_md_constant (void **slot, void *info ATTRIBUTE_UNUSED) { struct md_constant *def = (struct md_constant *) *slot; if (!def->parent_enum) printf ("#define %s %s\n", def->name, def->value); return 1; } /* Called via traverse_enums. Emit an enum definition for enum_type *SLOT. */ static int print_enum_type (void **slot, void *info ATTRIBUTE_UNUSED) { struct enum_type *def; struct enum_value *value; char *value_name; def = (struct enum_type *) *slot; printf ("\nenum %s {", def->name); for (value = def->values; value; value = value->next) { printf ("\n %s = %s", value->def->name, value->def->value); if (value->next) putc (',', stdout); } printf ("\n};\n"); /* Define NUM_<enum>_VALUES to be the largest enum value + 1. */ value_name = ACONCAT (("num_", def->name, "_values", NULL)); upcase_string (value_name); printf ("#define %s %d\n", value_name, def->num_values); /* Declare the array that is generated by genenum. */ printf ("extern const char *const %s_strings[];\n", def->name); return 1; } int main (int argc, char **argv) { progname = "genconstants"; if (!read_md_files (argc, argv, NULL, NULL)) return (FATAL_EXIT_CODE); /* Initializing the MD reader has the side effect of loading up the constants table that we wish to scan. */ puts ("/* Generated automatically by the program `genconstants'"); puts (" from the machine description file `md'. */\n"); puts ("#ifndef GCC_INSN_CONSTANTS_H"); puts ("#define GCC_INSN_CONSTANTS_H\n"); traverse_md_constants (print_md_constant, 0); traverse_enum_types (print_enum_type, 0); puts ("\n#endif /* GCC_INSN_CONSTANTS_H */"); if (ferror (stdout) || fflush (stdout) || fclose (stdout)) return FATAL_EXIT_CODE; return SUCCESS_EXIT_CODE; }
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