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

   1 /*
   2  * This file is part of libFirm.
   3  * Copyright (C) 2012 University of Karlsruhe.
   4  */
   5
   6 /**
   7  * @file
   8  * @brief    Implements the Firm interface to debug information.
   9  * @author   Goetz Lindenmaier, Michael Beck
  10  * @date     2001
  11  */
  12 #include "config.h"
  13
  14 #include "dbginfo_t.h"
  15 #include "irnode_t.h"
  16 #include "type_t.h"
  17 #include "entity_t.h"
  18 #include "error.h"
  19
  20 merge_pair_func *__dbg_info_merge_pair = default_dbg_info_merge_pair;
  21 merge_sets_func *__dbg_info_merge_sets = default_dbg_info_merge_sets;
  22
  23 void dbg_init(merge_pair_func *mpf, merge_sets_func *msf)
  24 {
  25         __dbg_info_merge_pair = mpf ? mpf : default_dbg_info_merge_pair;
  26         __dbg_info_merge_sets = msf ? msf : default_dbg_info_merge_sets;
  27 }
  28
  29 /*
  30  * Converts a debug_action into a string.
  31  */
  32 const char *dbg_action_2_str(dbg_action a)
  33 {
  34 #define CASE(a) case a: return #a
  35
  36         switch (a) {
  37         CASE(dbg_error);
  38         CASE(dbg_opt_ssa);
  39         CASE(dbg_opt_auxnode);
  40         CASE(dbg_const_eval);
  41         CASE(dbg_opt_cse);
  42         CASE(dbg_straightening);
  43         CASE(dbg_if_simplification);
  44         CASE(dbg_algebraic_simplification);
  45         CASE(dbg_write_after_write);
  46         CASE(dbg_write_after_read);
  47         CASE(dbg_read_after_write);
  48         CASE(dbg_read_after_read);
  49         CASE(dbg_read_a_const);
  50         CASE(dbg_rem_poly_call);
  51         CASE(dbg_dead_code);
  52         CASE(dbg_opt_confirm);
  53         CASE(dbg_gvn_pre);
  54         CASE(dbg_combo);
  55         CASE(dbg_jumpthreading);
  56         CASE(dbg_backend);
  57         default:
  58                 if (a <= dbg_max)
  59                         return "string conversion not implemented";
  60                 else
  61                         panic("Missing debug action");
  62         }
  63 #undef CASE
  64 }
  65
  66 void default_dbg_info_merge_pair(ir_node *nw, ir_node *old, dbg_action info)
  67 {
  68         dbg_info *new_db = get_irn_dbg_info(nw);
  69         (void) info;
  70         if (new_db == NULL)
  71                 set_irn_dbg_info(nw, get_irn_dbg_info(old));
  72 }
  73
  74 void default_dbg_info_merge_sets(ir_node **new_nodes, int n_new_nodes,
  75                                  ir_node **old_nodes, int n_old_nodes,
  76                                  dbg_action info)
  77 {
  78         (void) info;
  79         if (n_old_nodes == 1) {
  80                 dbg_info *old_db = get_irn_dbg_info(old_nodes[0]);
  81                 int i;
  82
  83                 for (i = 0; i < n_new_nodes; ++i)
  84                         if (get_irn_dbg_info(new_nodes[i]) == NULL)
  85                                 set_irn_dbg_info(new_nodes[i], old_db);
  86         }
  87 }
  88
  89 static src_loc_t default_retrieve_dbg(dbg_info const *const dbg)
  90 {
  91         (void)dbg;
  92         src_loc_t const loc = { NULL, 0, 0 };
  93         return loc;
  94 }
  95
  96 /** The debug info retriever function. */
  97 static retrieve_dbg_func      retrieve_dbg      = default_retrieve_dbg;
  98 static retrieve_type_dbg_func retrieve_type_dbg = NULL;
  99
 100 void ir_set_debug_retrieve(retrieve_dbg_func func)
 101 {
 102         retrieve_dbg = func ? func : default_retrieve_dbg;
 103 }
 104
 105 src_loc_t ir_retrieve_dbg_info(dbg_info const *const dbg)
 106 {
 107         return retrieve_dbg(dbg);
 108 }
 109
 110 void ir_set_type_debug_retrieve(retrieve_type_dbg_func func)
 111 {
 112         retrieve_type_dbg = func;
 113 }
 114
 115 void ir_retrieve_type_dbg_info(char *buffer, size_t buffer_size,
 116                                const type_dbg_info *tdbgi)
 117 {
 118         buffer[0] = '\0';
 119         if (retrieve_type_dbg)
 120                 retrieve_type_dbg(buffer, buffer_size, tdbgi);
 121         assert(buffer_size > 0);
 122         buffer[buffer_size-1] = '\0';
 123 }
 124
 125 void ir_dbg_info_snprint(char *buf, size_t bufsize, const dbg_info *dbg)
 126 {
 127         src_loc_t const loc = ir_retrieve_dbg_info(dbg);
 128
 129         if (!loc.file) {
 130                 assert(bufsize > 0);
 131                 buf[0] = 0;
 132                 return;
 133         }
 134         if (loc.column == 0) {
 135                 snprintf(buf, bufsize, "%s:%u", loc.file, loc.line);
 136         } else {
 137                 snprintf(buf, bufsize, "%s:%u:%u", loc.file, loc.line, loc.column);
 138         }
 139 }