diff options
Diffstat (limited to 'arch/x86/vdso/vdso2c.c')
| -rw-r--r-- | arch/x86/vdso/vdso2c.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/vdso/vdso2c.c b/arch/x86/vdso/vdso2c.c index fe8bfbf62612..de19ced6c87d 100644 --- a/arch/x86/vdso/vdso2c.c +++ b/arch/x86/vdso/vdso2c.c @@ -51,6 +51,21 @@ static void fail(const char *format, ...) va_end(ap); } +/* + * Evil macros to do a little-endian read. + */ +#define __GET_TYPE(x, type, bits, ifnot) \ + __builtin_choose_expr( \ + __builtin_types_compatible_p(typeof(x), type), \ + le##bits##toh((x)), ifnot) + +extern void bad_get(uint64_t); + +#define GET(x) \ + __GET_TYPE((x), __u32, 32, __GET_TYPE((x), __u64, 64, \ + __GET_TYPE((x), __s32, 32, __GET_TYPE((x), __s64, 64, \ + __GET_TYPE((x), __u16, 16, bad_get(x)))))) + #define NSYMS (sizeof(required_syms) / sizeof(required_syms[0])) #define BITS 64 |