gdb/memrange.h

   1 /* The memory range data structure, and associated utilities.
   2
   3    Copyright (C) 2010-2020 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef MEMRANGE_H
  21 #define MEMRANGE_H
  22
  23 /* Defines a [START, START + LENGTH) memory range.  */
  24
  25 struct mem_range
  26 {
  27   mem_range () = default;
  28
  29   mem_range (CORE_ADDR start_, int length_)
  30   : start (start_), length (length_)
  31   {}
  32
  33   bool operator< (const mem_range &other) const
  34   {
  35     return this->start < other.start;
  36   }
  37
  38   bool operator== (const mem_range &other) const
  39   {
  40     return (this->start == other.start
  41             && this->length == other.length);
  42   }
  43
  44   /* Lowest address in the range.  */
  45   CORE_ADDR start;
  46
  47   /* Length of the range.  */
  48   int length;
  49 };
  50
  51 /* Returns true if the ranges defined by [start1, start1+len1) and
  52    [start2, start2+len2) overlap.  */
  53
  54 extern int mem_ranges_overlap (CORE_ADDR start1, int len1,
  55                                CORE_ADDR start2, int len2);
  56
  57 /* Returns true if ADDR is in RANGE.  */
  58
  59 extern int address_in_mem_range (CORE_ADDR addr,
  60                                  const struct mem_range *range);
  61
  62 /* Sort ranges by start address, then coalesce contiguous or
  63    overlapping ranges.  */
  64
  65 extern void normalize_mem_ranges (std::vector<mem_range> *memory);
  66
  67 #endif