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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
// We return:
// - 0 if the machine matches the asked-for cpu
// - 1 if it didn't match, but did match the name of another arch
// - 2 otherwise
// When updating this file for a new architecture, add the name to
// 'all_archs' as well as adding go().
#define False 0
#define True 1
typedef int Bool;
char* all_archs[] = {
"amd64",
"ppc32",
"ppc64",
"x86",
NULL
};
#if !defined(_AIX) && defined(__powerpc__) && !defined(__powerpc64__)
static Bool go(char* cpu)
{
if ( strcmp( cpu, "ppc32" ) == 0 )
return True;
return False;
}
#endif // __powerpc__ (32)
#if !defined(_AIX) && defined(__powerpc__) && defined(__powerpc64__)
static Bool go(char* cpu)
{
if ( strcmp( cpu, "ppc64" ) == 0 )
return True;
if ( strcmp( cpu, "ppc32" ) == 0 )
return True;
return False;
}
#endif // __powerpc__ (64)
#if defined(_AIX)
static Bool go(char* cpu)
{
if (sizeof(void*) == 8) {
/* cpu is in 64-bit mode */
if ( strcmp( cpu, "ppc64" ) == 0 )
return True;
if ( strcmp( cpu, "ppc32" ) == 0 )
return True;
} else {
if ( strcmp( cpu, "ppc32" ) == 0 )
return True;
}
return False;
}
#endif // _AIX
#if !defined(_AIX) && (defined(__i386__) || defined(__x86_64__))
static void cpuid ( unsigned int n,
unsigned int* a, unsigned int* b,
unsigned int* c, unsigned int* d )
{
__asm__ __volatile__ (
"cpuid"
: "=a" (*a), "=b" (*b), "=c" (*c), "=d" (*d) /* output */
: "0" (n) /* input */
);
}
static Bool go(char* cpu)
{
unsigned int level = 0, cmask = 0, dmask = 0, a, b, c, d;
if ( strcmp( cpu, "x86" ) == 0 ) {
return True;
} else if ( strcmp( cpu, "x86-fpu" ) == 0 ) {
level = 1;
dmask = 1 << 0;
} else if ( strcmp( cpu, "x86-cmov" ) == 0 ) {
level = 1;
dmask = 1 << 15;
} else if ( strcmp( cpu, "x86-mmx" ) == 0 ) {
level = 1;
dmask = 1 << 23;
} else if ( strcmp( cpu, "x86-mmxext" ) == 0 ) {
level = 0x80000001;
dmask = 1 << 22;
} else if ( strcmp( cpu, "x86-sse" ) == 0 ) {
level = 1;
dmask = 1 << 25;
} else if ( strcmp( cpu, "x86-sse2" ) == 0 ) {
level = 1;
dmask = 1 << 26;
} else if ( strcmp( cpu, "x86-sse3" ) == 0 ) {
level = 1;
cmask = 1 << 0;
#if defined(__x86_64__)
} else if ( strcmp( cpu, "amd64" ) == 0 ) {
return True;
} else if ( strcmp( cpu, "amd64-sse3" ) == 0 ) {
level = 1;
cmask = 1 << 0;
#endif
} else {
return False;
}
assert( !(cmask != 0 && dmask != 0) );
assert( !(cmask == 0 && dmask == 0) );
cpuid( level & 0x80000000, &a, &b, &c, &d );
if ( a >= level ) {
cpuid( level, &a, &b, &c, &d );
if (dmask > 0 && (d & dmask) != 0) return True;
if (cmask > 0 && (c & cmask) != 0) return True;
}
return False;
}
#endif // !_AIX && (__i386__ || __x86_64__)
int main(int argc, char **argv)
{
int i;
if ( argc != 2 ) {
fprintf( stderr, "usage: cputest <cpu-type>\n" );
exit( 2 );
}
if (go( argv[1] )) {
return 0; // matched
}
for (i = 0; NULL != all_archs[i]; i++) {
if ( strcmp( argv[1], all_archs[i] ) == 0 )
return 1;
}
return 2;
}
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