nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | |
nethercote | b625bcb | 2004-10-19 16:29:30 +0000 | [diff] [blame^] | 5 | // We return 0 if the machine matches the asked-for cpu, 1 otherwise. |
| 6 | |
| 7 | #ifdef __x86__ |
nethercote | 1018bdd | 2004-02-11 23:33:29 +0000 | [diff] [blame] | 8 | static __inline__ void cpuid(unsigned int n, |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 9 | unsigned int *a, unsigned int *b, |
| 10 | unsigned int *c, unsigned int *d) |
| 11 | { |
| 12 | __asm__ __volatile__ ( |
| 13 | "cpuid" |
| 14 | : "=a" (*a), "=b" (*b), "=c" (*c), "=d" (*d) /* output */ |
| 15 | : "0" (n) /* input */ |
| 16 | ); |
| 17 | } |
| 18 | |
nethercote | b625bcb | 2004-10-19 16:29:30 +0000 | [diff] [blame^] | 19 | static int go(char* cpu) |
| 20 | { |
| 21 | unsigned int level = 0, mask = 0, a, b, c, d; |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 22 | |
nethercote | b625bcb | 2004-10-19 16:29:30 +0000 | [diff] [blame^] | 23 | if ( strcmp( cpu, "x86" ) == 0 ) { |
| 24 | level = 1; |
| 25 | mask = 1 << 0; |
| 26 | } else if ( strcmp( cpu, "x86-fpu" ) == 0 ) { |
| 27 | level = 1; |
| 28 | mask = 1 << 0; |
| 29 | } else if ( strcmp( cpu, "x86-cmov" ) == 0 ) { |
| 30 | level = 1; |
| 31 | mask = 1 << 15; |
| 32 | } else if ( strcmp( cpu, "x86-mmx" ) == 0 ) { |
| 33 | level = 1; |
| 34 | mask = 1 << 23; |
| 35 | } else if ( strcmp( cpu, "x86-mmxext" ) == 0 ) { |
| 36 | level = 0x80000001; |
| 37 | mask = 1 << 22; |
| 38 | } else if ( strcmp( cpu, "x86-sse" ) == 0 ) { |
| 39 | level = 1; |
| 40 | mask = 1 << 25; |
| 41 | } else if ( strcmp( cpu, "x86-sse2" ) == 0 ) { |
| 42 | level = 1; |
| 43 | mask = 1 << 26; |
| 44 | } else { |
| 45 | return 1; |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 46 | } |
| 47 | |
nethercote | 1018bdd | 2004-02-11 23:33:29 +0000 | [diff] [blame] | 48 | cpuid( level & 0x80000000, &a, &b, &c, &d ); |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 49 | |
nethercote | 1018bdd | 2004-02-11 23:33:29 +0000 | [diff] [blame] | 50 | if ( a >= level ) { |
| 51 | cpuid( level, &a, &b, &c, &d ); |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 52 | |
nethercote | b625bcb | 2004-10-19 16:29:30 +0000 | [diff] [blame^] | 53 | if ( ( d & mask ) != 0 ) return 0; |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 54 | } |
nethercote | b625bcb | 2004-10-19 16:29:30 +0000 | [diff] [blame^] | 55 | return 1; |
| 56 | } |
| 57 | #endif // __x86__ |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 58 | |
nethercote | b625bcb | 2004-10-19 16:29:30 +0000 | [diff] [blame^] | 59 | |
| 60 | #ifdef __ppc__ |
| 61 | static int go(char* cpu) |
| 62 | { |
| 63 | if ( strcmp( cpu, "ppc" ) == 0 ) |
| 64 | return 0; |
| 65 | else |
| 66 | return 1; |
| 67 | } |
| 68 | #endif // __ppc__ |
| 69 | |
| 70 | |
| 71 | int main(int argc, char **argv) |
| 72 | { |
| 73 | if ( argc != 2 ) { |
| 74 | fprintf( stderr, "usage: cputest <cpu-type>\n" ); |
| 75 | exit( 1 ); |
| 76 | } |
| 77 | return go( argv[1] ); |
nethercote | 288b766 | 2004-01-20 09:24:53 +0000 | [diff] [blame] | 78 | } |