mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
59 lines
2.8 KiB
C
59 lines
2.8 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 2022 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 "libc/intrin/describeflags.internal.h"
|
|
|
|
// TODO(jart): Fork this function into ASAN and non-ASAN versions.
|
|
const char *DescribeFlags(char *p, size_t n, struct DescribeFlags *d, size_t m,
|
|
const char *prefix, unsigned x) {
|
|
bool t;
|
|
char b[21];
|
|
size_t i, j, k;
|
|
for (t = i = j = 0; j < m; ++j) {
|
|
if (d[j].flag && d[j].flag != -1 && (x & d[j].flag) == d[j].flag) {
|
|
x &= ~d[j].flag;
|
|
if (t) {
|
|
if (i + 1 < n) p[i++] = '|';
|
|
} else {
|
|
t = true;
|
|
}
|
|
for (k = 0; prefix && prefix[k]; ++k) {
|
|
if (i + 1 < n) p[i++] = prefix[k];
|
|
}
|
|
for (k = 0; d[j].name[k]; ++k) {
|
|
if (i + 1 < n) p[i++] = d[j].name[k];
|
|
}
|
|
}
|
|
}
|
|
if (x || !t) {
|
|
if (t && i + 1 < n) p[i++] = '|';
|
|
if (i + 1 < n) p[i++] = '0';
|
|
if (x) {
|
|
if (i + 1 < n) p[i++] = 'x';
|
|
k = 0;
|
|
do {
|
|
if (i + 1 < n) b[k++] = "0123456789abcdef"[x % 16];
|
|
} while ((x /= 16));
|
|
while (k--) {
|
|
if (i + 1 < n) p[i++] = b[k];
|
|
}
|
|
}
|
|
}
|
|
if (i < n) p[i] = 0;
|
|
return p;
|
|
}
|