98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* Memory ranges
|
|
|
|
Copyright (C) 2010-2015 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "defs.h"
|
|
#include "memrange.h"
|
|
|
|
int
|
|
mem_ranges_overlap (CORE_ADDR start1, int len1,
|
|
CORE_ADDR start2, int len2)
|
|
{
|
|
ULONGEST h, l;
|
|
|
|
l = max (start1, start2);
|
|
h = min (start1 + len1, start2 + len2);
|
|
return (l < h);
|
|
}
|
|
|
|
/* See memrange.h. */
|
|
|
|
int
|
|
address_in_mem_range (CORE_ADDR address, const struct mem_range *r)
|
|
{
|
|
return (r->start <= address
|
|
&& (address - r->start) < r->length);
|
|
}
|
|
|
|
/* qsort comparison function, that compares mem_ranges. Ranges are
|
|
sorted in ascending START order. */
|
|
|
|
static int
|
|
compare_mem_ranges (const void *ap, const void *bp)
|
|
{
|
|
const struct mem_range *r1 = ap;
|
|
const struct mem_range *r2 = bp;
|
|
|
|
if (r1->start > r2->start)
|
|
return 1;
|
|
else if (r1->start < r2->start)
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
normalize_mem_ranges (VEC(mem_range_s) *ranges)
|
|
{
|
|
/* This function must not use any VEC operation on RANGES that
|
|
reallocates the memory block as that invalidates the RANGES
|
|
pointer, which callers expect to remain valid. */
|
|
|
|
if (!VEC_empty (mem_range_s, ranges))
|
|
{
|
|
struct mem_range *ra, *rb;
|
|
int a, b;
|
|
|
|
qsort (VEC_address (mem_range_s, ranges),
|
|
VEC_length (mem_range_s, ranges),
|
|
sizeof (mem_range_s),
|
|
compare_mem_ranges);
|
|
|
|
a = 0;
|
|
ra = VEC_index (mem_range_s, ranges, a);
|
|
for (b = 1; VEC_iterate (mem_range_s, ranges, b, rb); b++)
|
|
{
|
|
/* If mem_range B overlaps or is adjacent to mem_range A,
|
|
merge them. */
|
|
if (rb->start <= ra->start + ra->length)
|
|
{
|
|
ra->length = max (ra->length,
|
|
(rb->start - ra->start) + rb->length);
|
|
continue; /* next b, same a */
|
|
}
|
|
a++; /* next a */
|
|
ra = VEC_index (mem_range_s, ranges, a);
|
|
|
|
if (a != b)
|
|
*ra = *rb;
|
|
}
|
|
VEC_truncate (mem_range_s, ranges, a + 1);
|
|
}
|
|
}
|