nsz Git - libfirm/blob - ir/debug/dbginfo.c

   1 /*
   2  * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief    Implements the Firm interface to debug information.
  23  * @author   Goetz Lindenmaier, Michael Beck
  24  * @date     2001
  25  * @version  $Id$
  26  */
  27 #include "config.h"
  28
  29 #include "dbginfo_t.h"
  30 #include "irnode_t.h"
  31 #include "type_t.h"
  32 #include "entity_t.h"
  33 #include "error.h"
  34
  35 merge_pair_func *__dbg_info_merge_pair = default_dbg_info_merge_pair;
  36 merge_sets_func *__dbg_info_merge_sets = default_dbg_info_merge_sets;
  37
  38 void dbg_init(merge_pair_func *mpf, merge_sets_func *msf)
  39 {
  40         __dbg_info_merge_pair = mpf ? mpf : default_dbg_info_merge_pair;
  41         __dbg_info_merge_sets = msf ? msf : default_dbg_info_merge_sets;
  42 }
  43
  44 /*
  45  * Converts a debug_action into a string.
  46  */
  47 const char *dbg_action_2_str(dbg_action a)
  48 {
  49 #define CASE(a) case a: return #a
  50
  51         switch (a) {
  52         CASE(dbg_error);
  53         CASE(dbg_opt_ssa);
  54         CASE(dbg_opt_auxnode);
  55         CASE(dbg_const_eval);
  56         CASE(dbg_opt_cse);
  57         CASE(dbg_straightening);
  58         CASE(dbg_if_simplification);
  59         CASE(dbg_algebraic_simplification);
  60         CASE(dbg_write_after_write);
  61         CASE(dbg_write_after_read);
  62         CASE(dbg_read_after_write);
  63         CASE(dbg_read_after_read);
  64         CASE(dbg_read_a_const);
  65         CASE(dbg_rem_poly_call);
  66         CASE(dbg_dead_code);
  67         CASE(dbg_opt_confirm);
  68         CASE(dbg_gvn_pre);
  69         CASE(dbg_combo);
  70         CASE(dbg_jumpthreading);
  71         CASE(dbg_backend);
  72         default:
  73                 if (a <= dbg_max)
  74                         return "string conversion not implemented";
  75                 else
  76                         panic("Missing debug action in dbg_action_2_str()");
  77         }
  78 #undef CASE
  79 }
  80
  81 void default_dbg_info_merge_pair(ir_node *nw, ir_node *old, dbg_action info)
  82 {
  83         dbg_info *new_db = get_irn_dbg_info(nw);
  84         (void) info;
  85         if (new_db == NULL)
  86                 set_irn_dbg_info(nw, get_irn_dbg_info(old));
  87 }
  88
  89 void default_dbg_info_merge_sets(ir_node **new_nodes, int n_new_nodes,
  90                                  ir_node **old_nodes, int n_old_nodes,
  91                                  dbg_action info)
  92 {
  93         (void) info;
  94         if (n_old_nodes == 1) {
  95                 dbg_info *old_db = get_irn_dbg_info(old_nodes[0]);
  96                 int i;
  97
  98                 for (i = 0; i < n_new_nodes; ++i)
  99                         if (get_irn_dbg_info(new_nodes[i]) == NULL)
 100                                 set_irn_dbg_info(new_nodes[i], old_db);
 101         }
 102 }
 103
 104 /** The debug info retriever function. */
 105 static retrieve_dbg_func      retrieve_dbg      = NULL;
 106 static retrieve_type_dbg_func retrieve_type_dbg = NULL;
 107
 108 void ir_set_debug_retrieve(retrieve_dbg_func func)
 109 {
 110         retrieve_dbg = func;
 111 }
 112
 113 const char *ir_retrieve_dbg_info(const dbg_info *dbg, unsigned *line)
 114 {
 115         if (retrieve_dbg)
 116                 return retrieve_dbg(dbg, line);
 117
 118         *line = 0;
 119         return NULL;
 120 }
 121
 122 void ir_set_type_debug_retrieve(retrieve_type_dbg_func func)
 123 {
 124         retrieve_type_dbg = func;
 125 }
 126
 127 void ir_retrieve_type_dbg_info(char *buffer, size_t buffer_size,
 128                                const type_dbg_info *tdbgi)
 129 {
 130         buffer[0] = '\0';
 131         if (retrieve_type_dbg)
 132                 retrieve_type_dbg(buffer, buffer_size, tdbgi);
 133         assert(buffer_size > 0);
 134         buffer[buffer_size-1] = '\0';
 135 }
 136
 137 void ir_dbg_info_snprint(char *buf, size_t bufsize, const dbg_info *dbg)
 138 {
 139         unsigned    line;
 140         const char *source = ir_retrieve_dbg_info(dbg, &line);
 141
 142         if (source == NULL) {
 143                 assert(bufsize > 0);
 144                 buf[0] = 0;
 145                 return;
 146         }
 147         snprintf(buf, bufsize, "%s:%u", source, line);
 148 }