diff options
Diffstat (limited to 'libatomic/config')
| -rw-r--r-- | libatomic/config/linux/aarch64/host-config.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/libatomic/config/linux/aarch64/host-config.h b/libatomic/config/linux/aarch64/host-config.h index d0d44bf..c6f8d69 100644 --- a/libatomic/config/linux/aarch64/host-config.h +++ b/libatomic/config/linux/aarch64/host-config.h @@ -40,16 +40,20 @@ # define HWCAP2_LSE128 (1UL << 47) #endif -#if __has_include(<sys/ifunc.h>) -# include <sys/ifunc.h> -#else +/* The following struct is ABI-correct description of the 2nd argument for an + ifunc resolver as per SYSVABI spec (see link below). It is safe to extend + it with new fields. The ifunc resolver implementations must always check + the runtime size of the buffer using the value in the _size field. + https://github.com/ARM-software/abi-aa/blob/main/sysvabi64/sysvabi64.rst. */ typedef struct __ifunc_arg_t { unsigned long _size; unsigned long _hwcap; unsigned long _hwcap2; + unsigned long _hwcap3; + unsigned long _hwcap4; } __ifunc_arg_t; + # define _IFUNC_ARG_HWCAP (1ULL << 62) -#endif /* From the file which imported `host-config.h' we can ascertain which architectural extension provides relevant atomic support. From this, |