1 /* Declarations for rtx-reader support for gen* routines. 2 Copyright (C) 2000, 2002 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 2, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING. If not, write to the Free 18 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 19 02111-1307, USA. */ 20 21 #ifndef GCC_GENSUPPORT_H 22 #define GCC_GENSUPPORT_H 23 24 struct obstack; 25 extern struct obstack *rtl_obstack; 26 27 extern int init_md_reader_args PARAMS ((int, char **)); 28 extern int init_md_reader PARAMS ((const char *)); 29 extern rtx read_md_rtx PARAMS ((int *, int *)); 30 31 extern void message_with_line PARAMS ((int, const char *, ...)) 32 ATTRIBUTE_PRINTF_2; 33 34 /* Set this to 0 to disable automatic elision of insn patterns which 35 can never be used in this configuration. See genconditions.c. 36 Must be set before calling init_md_reader. */ 37 extern int insn_elision; 38 39 /* If this is 1, the insn elision table doesn't even exist yet; 40 maybe_eval_c_test will always return -1. This is distinct from 41 insn_elision because genflags and gencodes need to see all the 42 patterns, but treat elided patterns differently. */ 43 extern const int insn_elision_unavailable; 44 45 /* If the C test passed as the argument can be evaluated at compile 46 time, return its truth value; else return -1. The test must have 47 appeared somewhere in the machine description when genconditions 48 was run. */ 49 extern int maybe_eval_c_test PARAMS ((const char *)); 50 51 /* This table should not be accessed directly; use maybe_eval_c_test. */ 52 struct c_test 53 { 54 const char *expr; 55 int value; 56 }; 57 58 extern const struct c_test insn_conditions[]; 59 extern const size_t n_insn_conditions; 60 61 #ifdef __HASHTAB_H__ 62 extern hashval_t hash_c_test PARAMS ((const PTR)); 63 extern int cmp_c_test PARAMS ((const PTR, const PTR)); 64 #endif 65 66 extern int n_comma_elts PARAMS ((const char *)); 67 extern const char *scan_comma_elt PARAMS ((const char **)); 68 69 #endif /* GCC_GENSUPPORT_H */ 70