190075Sobrien/* Declarations for rtx-reader support for gen* routines. 2169689Skan Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc. 390075Sobrien 490075SobrienThis file is part of GCC. 590075Sobrien 690075SobrienGCC is free software; you can redistribute it and/or modify it under 790075Sobrienthe terms of the GNU General Public License as published by the Free 890075SobrienSoftware Foundation; either version 2, or (at your option) any later 990075Sobrienversion. 1090075Sobrien 1190075SobrienGCC is distributed in the hope that it will be useful, but WITHOUT ANY 1290075SobrienWARRANTY; without even the implied warranty of MERCHANTABILITY or 1390075SobrienFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1490075Sobrienfor more details. 1590075Sobrien 1690075SobrienYou should have received a copy of the GNU General Public License 1790075Sobrienalong with GCC; see the file COPYING. If not, write to the Free 18169689SkanSoftware Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 19169689Skan02110-1301, USA. */ 2090075Sobrien 21117395Skan#ifndef GCC_GENSUPPORT_H 22117395Skan#define GCC_GENSUPPORT_H 23117395Skan 2490075Sobrienstruct obstack; 2590075Sobrienextern struct obstack *rtl_obstack; 26169689Skanextern const char *in_fname; 2790075Sobrien 28169689Skanextern int init_md_reader_args_cb (int, char **, bool (*)(const char *)); 29132718Skanextern int init_md_reader_args (int, char **); 30132718Skanextern rtx read_md_rtx (int *, int *); 3190075Sobrien 32132718Skanextern void message_with_line (int, const char *, ...) 3390075Sobrien ATTRIBUTE_PRINTF_2; 34117395Skan 35117395Skan/* Set this to 0 to disable automatic elision of insn patterns which 36117395Skan can never be used in this configuration. See genconditions.c. 37117395Skan Must be set before calling init_md_reader. */ 38117395Skanextern int insn_elision; 39117395Skan 40117395Skan/* If the C test passed as the argument can be evaluated at compile 41117395Skan time, return its truth value; else return -1. The test must have 42117395Skan appeared somewhere in the machine description when genconditions 43117395Skan was run. */ 44132718Skanextern int maybe_eval_c_test (const char *); 45117395Skan 46169689Skan/* Add an entry to the table of conditions. Used by genconditions and 47169689Skan by read-rtl.c. */ 48169689Skanextern void add_c_test (const char *, int); 49169689Skan 50169689Skan/* This structure is used internally by gensupport.c and genconditions.c. */ 51117395Skanstruct c_test 52117395Skan{ 53117395Skan const char *expr; 54117395Skan int value; 55117395Skan}; 56117395Skan 57117395Skan#ifdef __HASHTAB_H__ 58132718Skanextern hashval_t hash_c_test (const void *); 59132718Skanextern int cmp_c_test (const void *, const void *); 60169689Skanextern void traverse_c_tests (htab_trav, void *); 61117395Skan#endif 62117395Skan 63132718Skanextern int n_comma_elts (const char *); 64132718Skanextern const char *scan_comma_elt (const char **); 65117395Skan 66169689Skan/* Predicate handling: helper functions and data structures. */ 67169689Skan 68169689Skanstruct pred_data 69169689Skan{ 70169689Skan struct pred_data *next; /* for iterating over the set of all preds */ 71169689Skan const char *name; /* predicate name */ 72169689Skan bool special; /* special handling of modes? */ 73169689Skan 74169689Skan /* data used primarily by genpreds.c */ 75169689Skan const char *c_block; /* C test block */ 76169689Skan rtx exp; /* RTL test expression */ 77169689Skan 78169689Skan /* data used primarily by genrecog.c */ 79169689Skan enum rtx_code singleton; /* if pred takes only one code, that code */ 80169689Skan bool allows_non_lvalue; /* if pred allows non-lvalue expressions */ 81169689Skan bool allows_non_const; /* if pred allows non-const expressions */ 82169689Skan bool codes[NUM_RTX_CODE]; /* set of codes accepted */ 83169689Skan}; 84169689Skan 85169689Skanextern struct pred_data *first_predicate; 86169689Skanextern struct pred_data *lookup_predicate (const char *); 87169689Skanextern void add_predicate (struct pred_data *); 88169689Skan 89169689Skan#define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next) 90169689Skan 91169689Skan/* This callback will be invoked whenever an rtl include directive is 92169689Skan processed. To be used for creation of the dependency file. */ 93169689Skanextern void (*include_callback) (const char *); 94169689Skan 95117395Skan#endif /* GCC_GENSUPPORT_H */ 96