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#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sched.h>
#include "my_cpuid.h"
#include "debug.h"
#include "x64emu.h"
int get_cpuMhz()
{
int MHz = 0;
char *p = NULL;
if((p=getenv("BOX64_CPUMHZ"))) {
MHz = atoi(p);
return MHz;
}
char cpumhz[200];
sprintf(cpumhz, "%d", MHz?:1000);
setenv("BOX64_CPUMHZ", cpumhz, 1); // set temp value incase box64 gets recursively called
int cpucore = 0;
while(cpucore!=-1) {
char cpufreq[4096];
sprintf(cpufreq, "/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq", cpucore);
FILE *f = fopen(cpufreq, "r");
if(f) {
int r;
if(1==fscanf(f, "%d", &r)) {
r /= 1000;
if(MHz<r)
MHz = r;
}
fclose(f);
++cpucore;
}
else
cpucore = -1;
}
#ifndef STATICBUILD
if(!MHz) {
// try with lscpu, grabbing the max frequency
FILE* f = popen("lscpu | grep \"CPU max MHz:\" | sed -r 's/CPU max MHz:\\s{1,}//g'", "r");
if(f) {
char tmp[200] = "";
ssize_t s = fread(tmp, 1, 200, f);
pclose(f);
if(s>0) {
// worked! (unless it's saying "lscpu: command not found" or something like that)
if(!strstr(tmp, "lscpu")) {
// trim ending
while(strlen(tmp) && tmp[strlen(tmp)-1]=='\n')
tmp[strlen(tmp)-1] = 0;
// incase multiple cpu type are present, there will be multiple lines
while(strchr(tmp, '\n'))
*strchr(tmp,'\n') = ' ';
// cut the float part (so '.' or ','), it's not needed
if(strchr(tmp, '.'))
*strchr(tmp, '.')= '\0';
if(strchr(tmp, ','))
*strchr(tmp, ',')= '\0';
int mhz;
if(sscanf(tmp, "%d", &mhz)==1)
MHz = mhz;
}
}
}
}
#endif
if(!MHz)
MHz = 1000; // default to 1Ghz...
sprintf(cpumhz, "%d", MHz);
setenv("BOX64_CPUMHZ", cpumhz, 1); // set actual value
return MHz;
}
static int nCPU = 0;
static double bogoMips = 100.;
static int read_ncpu = 0;
void grabNCpu() {
nCPU = 1; // default number of CPU to 1
FILE *f = fopen("/proc/cpuinfo", "r");
ssize_t dummy;
if(f) {
nCPU = 0;
int bogo = 0;
size_t len = 500;
char* line = malloc(len);
while ((dummy = getline(&line, &len, f)) != (ssize_t)-1) {
if(!strncmp(line, "processor\t", strlen("processor\t")))
++nCPU;
if(!bogo && !strncmp(line, "BogoMIPS\t", strlen("BogoMIPS\t"))) {
// grab 1st BogoMIPS
float tmp;
if(sscanf(line, "BogoMIPS\t: %g", &tmp)==1) {
bogoMips = tmp;
bogo = 1;
}
}
}
free(line);
fclose(f);
if(!nCPU) nCPU=1;
}
}
int getNCpu()
{
if(!nCPU)
grabNCpu();
read_ncpu = 1;
if(BOX64ENV(maxcpu) && nCPU>BOX64ENV(maxcpu))
return BOX64ENV(maxcpu);
return nCPU;
}
int getNCpuUnmasked()
{
if(!nCPU)
grabNCpu();
return nCPU;
}
int canNCpuBeChanged()
{
return read_ncpu?0:1;
}
double getBogoMips()
{
if(!nCPU)
grabNCpu();
return bogoMips;
}
const char* getCpuName()
{
static char name[200] = "Unknown CPU";
static int done = 0;
if(done)
return name;
done = 1;
char *p = NULL;
if((p=getenv("BOX64_CPUNAME"))) {
strcpy(name, p);
return name;
}
setenv("BOX64_CPUNAME", name, 1); // temporary set
#ifndef STATICBUILD
FILE* f = popen("LC_ALL=C lscpu | grep -i \"model name:\" | head -n 1 | sed -r 's/(model name:)\\s{1,}//gi'", "r");
if(f) {
char tmp[200] = "";
ssize_t s = fread(tmp, 1, 200, f);
pclose(f);
if(s>0) {
// worked! (unless it's saying "lscpu: command not found" or something like that)
if(!strstr(tmp, "lscpu")) {
// trim ending
while(strlen(tmp) && tmp[strlen(tmp)-1]=='\n')
tmp[strlen(tmp)-1] = 0;
strncpy(name, tmp, 199);
}
setenv("BOX64_CPUNAME", name, 1);
return name;
}
}
// failled, try to get architecture at least
f = popen("uname -m", "r");
if(f) {
char tmp[200] = "";
ssize_t s = fread(tmp, 1, 200, f);
pclose(f);
if(s>0) {
// worked!
// trim ending
while(strlen(tmp) && tmp[strlen(tmp)-1]=='\n')
tmp[strlen(tmp)-1] = 0;
snprintf(name, 199, "unknown %s cpu", tmp);
setenv("BOX64_CPUNAME", name, 1);
return name;
}
}
#endif
// Nope, bye
return name;
}
const char* getBoxCpuName()
{
static char branding[3*4*4+1] = "";
static int done = 0;
if(!done) {
done = 1;
const char* name = getCpuName();
if(strstr(name, "MHz") || strstr(name, "GHz")) {
// name already have the speed in it
snprintf(branding, sizeof(branding), "Box64 on %.*s", 39, name);
} else {
unsigned int MHz = get_cpuMhz();
if(MHz>1500) { // swiches to GHz display...
snprintf(branding, sizeof(branding), "Box64 on %.*s @%1.2f GHz", 28, name, MHz/1000.);
} else {
snprintf(branding, sizeof(branding), "Box64 on %.*s @%04d MHz", 28, name, MHz);
}
}
}
return branding;
}
uint32_t helper_getcpu(x64emu_t* emu) {
#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) && !defined(ANDROID)
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 28)
uint32_t cpu, node;
if(!getcpu(&cpu, &node))
return (node&0xff)<<12 | (cpu&0xff);
#endif
#endif
return 0;
}
uint32_t fallback_random32()
{
return random() ^ (random()<<1);
}
uint32_t get_random32()
{
uint32_t ret;
FILE* f = fopen("/dev/urandom", "rb");
if(f) {
if(fread(&ret, sizeof(ret), 1, f)!=1)
ret = fallback_random32();
fclose(f);
} else
ret = fallback_random32();
return ret;
}
uint64_t fallback_random64()
{
return random() ^ (((uint64_t)random())<<18) ^ (((uint64_t)random())<<41);
}
uint64_t get_random64()
{
uint64_t ret;
FILE* f = fopen("/dev/urandom", "rb");
if(f) {
if(fread(&ret, sizeof(ret), 1, f)!=1)
ret = fallback_random64();
fclose(f);
} else
ret = fallback_random64();
return ret;
}
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