77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
/* Memory ranges
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Copyright (C) 2010-2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "memrange.h"
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#include <algorithm>
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int
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mem_ranges_overlap (CORE_ADDR start1, int len1,
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CORE_ADDR start2, int len2)
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{
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ULONGEST h, l;
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l = std::max (start1, start2);
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h = std::min (start1 + len1, start2 + len2);
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return (l < h);
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}
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/* See memrange.h. */
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int
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address_in_mem_range (CORE_ADDR address, const struct mem_range *r)
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{
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return (r->start <= address
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&& (address - r->start) < r->length);
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}
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void
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normalize_mem_ranges (std::vector<mem_range> *memory)
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{
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/* This function must not use any VEC operation on RANGES that
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reallocates the memory block as that invalidates the RANGES
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pointer, which callers expect to remain valid. */
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if (!memory->empty ())
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{
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std::vector<mem_range> &m = *memory;
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std::sort (m.begin (), m.end ());
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int a = 0;
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for (int b = 1; b < m.size (); b++)
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{
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/* If mem_range B overlaps or is adjacent to mem_range A,
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merge them. */
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if (m[b].start <= m[a].start + m[a].length)
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{
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m[a].length = std::max ((CORE_ADDR) m[a].length,
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(m[b].start - m[a].start) + m[b].length);
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continue; /* next b, same a */
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}
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a++; /* next a */
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if (a != b)
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m[a] = m[b];
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}
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m.resize (a + 1);
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}
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}
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