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Initial attempt at proper cpu detection on RISCV

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Martin Kroeker 2022-05-04 08:58:56 +02:00 committed by Owen Rafferty
parent d5e9de115d
commit a7b248631b
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GPG Key ID: A68B10E2554DEBCB
1 changed files with 28 additions and 4 deletions
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32
cpuid_riscv64.c
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@ -13,9 +13,9 @@ met:
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
@ -79,7 +79,30 @@ static char *cpuname[] = {
};
int detect(void){
return CPU_UNKNOWN;
#ifdef __linux
FILE *infile;
char buffer[512], *p;
p = (char *)NULL;
infile = fopen("/proc/cpuinfo", "r");
while (fgets(buffer, sizeof(buffer), infile)){
if (!strncmp("isa", buffer, 3)){
p = strchr(buffer, '4') + 1; /* the 4 in rv64ima... */
#if 0
fprintf(stderr, "%s\n", p);
#endif
break;
}
}
fclose(infile);
if (strchr(p, 'v')) return CPU_C910V;
return CPU_GENERIC;
#endif
return CPU_GENERIC;
}
char *get_corename(void){
@ -91,6 +114,7 @@ void get_architecture(void){
}
void get_subarchitecture(void){
printf("%s",cpuname[detect()]);
}
void get_subdirname(void){