gdb/memrange.h

   1 /* The memory range data structure, and associated utilities.
   2
   3    Copyright (C) 2010-2019 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 #include "common/vec.h"
  24
  25 /* Defines a [START, START + LENGTH) memory range.  */
  26
  27 struct mem_range
  28 {
  29   mem_range () = default;
  30
  31   mem_range (CORE_ADDR start_, int length_)
  32   : start (start_), length (length_)
  33   {}
  34
  35   bool operator< (const mem_range &other) const
  36   {
  37     return this->start < other.start;
  38   }
  39
  40   bool operator== (const mem_range &other) const
  41   {
  42     return (this->start == other.start
  43             && this->length == other.length);
  44   }
  45
  46   /* Lowest address in the range.  */
  47   CORE_ADDR start;
  48
  49   /* Length of the range.  */
  50   int length;
  51 };
  52
  53 /* Returns true if the ranges defined by [start1, start1+len1) and
  54    [start2, start2+len2) overlap.  */
  55
  56 extern int mem_ranges_overlap (CORE_ADDR start1, int len1,
  57                                CORE_ADDR start2, int len2);
  58
  59 /* Returns true if ADDR is in RANGE.  */
  60
  61 extern int address_in_mem_range (CORE_ADDR addr,
  62                                  const struct mem_range *range);
  63
  64 /* Sort ranges by start address, then coalesce contiguous or
  65    overlapping ranges.  */
  66
  67 extern void normalize_mem_ranges (std::vector<mem_range> *memory);
  68
  69 #endif