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/*
* CPUID
*
* A simple and small tool to dump/decode CPUID information.
*
* Copyright (c) 2010-2018, Steven Noonan <steven@uplinklabs.net>
*
* 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 "prefix.h"
#include "util.h"
#include <ctype.h>
#include <limits.h>
#include <string.h>
#ifdef TARGET_OS_WINDOWS
#include <windows.h>
#else
#include <sys/time.h>
#endif
size_t safe_strcat(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
uint32_t popcnt(uint32_t v)
{
uint32_t n = 0;
while (v) {
n += (v & 1);
v >>= 1;
}
return n;
}
uint32_t count_trailing_zero_bits(uint32_t v)
{
uint32_t c;
if (v) {
v = (v ^ (v - 1)) >> 1; /* Set v's trailing 0s to 1s and zero rest */
for (c = 0; v; c++)
{
v >>= 1;
}
} else {
c = CHAR_BIT * sizeof(v);
}
return c;
}
void squeeze(char *str)
{
int r; /* next character to be read */
int w; /* next character to be written */
r=w=0;
while (str[r])
{
if (isspace((int)(str[r])) || iscntrl((int)(str[r])))
{
if (w > 0 && !isspace((int)(str[w-1])))
str[w++] = ' ';
}
else
str[w++] = str[r];
r++;
}
str[w] = 0;
}
double time_sec(void)
{
#ifdef TARGET_OS_WINDOWS
LARGE_INTEGER freq, ctr;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&ctr);
return (double)ctr.QuadPart / (double)freq.QuadPart;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
return (double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0);
#endif
}
#ifdef TARGET_OS_WINDOWS
int is_windows7_or_greater(void)
{
static int cached = -1;
if (cached < 0) {
OSVERSIONINFOEXW osvi;
DWORDLONG const dwlConditionMask = VerSetConditionMask(
VerSetConditionMask(
VerSetConditionMask(
0, VER_MAJORVERSION, VER_GREATER_EQUAL),
VER_MINORVERSION, VER_GREATER_EQUAL),
VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
memset(&osvi, 0, sizeof(osvi));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
osvi.dwMajorVersion = HIBYTE(_WIN32_WINNT_WIN7);
osvi.dwMinorVersion = LOBYTE(_WIN32_WINNT_WIN7);
osvi.wServicePackMajor = 0;
cached = (VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE) ? 1 : 0;
}
return cached;
}
#endif
/* vim: set ts=4 sts=4 sw=4 noet: */
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