| #ifndef ARCH_H |
| #define ARCH_H |
| |
| enum { |
| arch_x86_64, |
| arch_i386, |
| arch_ppc, |
| arch_ia64, |
| arch_s390, |
| arch_alpha, |
| }; |
| |
| static inline unsigned long generic_ffz(unsigned long word) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < sizeof(word) * 8; i++) |
| if ((word & (1UL << i)) == 0) |
| return i; |
| |
| return -1; |
| } |
| |
| #if defined(__i386__) |
| #include "arch-x86.h" |
| #elif defined(__x86_64__) |
| #include "arch-x86_64.h" |
| #elif defined(__powerpc__) || defined(__powerpc64__) |
| #include "arch-ppc.h" |
| #elif defined(__ia64__) |
| #include "arch-ia64.h" |
| #elif defined(__alpha__) |
| #include "arch-alpha.h" |
| #elif defined(__s390x__) || defined(__s390__) |
| #include "arch-s390.h" |
| #else |
| #error "Unsupported arch" |
| #endif |
| |
| #define BITS_PER_LONG (__WORDSIZE) |
| |
| #endif |