47 lines
2.3 KiB
C
47 lines
2.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "ape/lib/pc.h"
|
|
|
|
textreal static unsigned smapcount(const struct SmapEntry *se) {
|
|
unsigned i = 0;
|
|
while (se[i].size) ++i;
|
|
return i;
|
|
}
|
|
|
|
textreal static void smapsorter(size_t n, struct SmapEntry a[n]) {
|
|
struct SmapEntry t;
|
|
unsigned i, j;
|
|
for (i = 1; i < n; ++i) {
|
|
j = i;
|
|
t = a[i];
|
|
while (j > 0 && (intptr_t)t.addr - (intptr_t)a[j - 1].addr) {
|
|
a[j] = a[j - 1];
|
|
--j;
|
|
}
|
|
a[j] = t;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sorts BIOS e820 memory map.
|
|
*/
|
|
textreal void smapsort(struct SmapEntry *smap) {
|
|
smapsorter(smapcount(smap), smap);
|
|
}
|