On 10/30/2012 6:21 AM, Pádraig Brady wrote:
-#if defined (__hppa) && W_TYPE_SIZE == 64 && ! defined (_LONG_LONG_LIMB)
+#if defined (__hppa) && W_TYPE_SIZE == 64 && ! defined
(_LONG_LONG_LIMB) \
+ && defined (_PA_RISC2_0) && (ULONGMAX_MAX == UINT64_MAX)
+/* Note the _PA_RISC2_0 above is to exclude this code from GCC with
+ default -march options which doesn't support these instructions.
+ Also the width check for 'long' is to avoid ilp32 runtimes where
+ GNU/Linux and narrow HP-UX kernels are known to have issues with
+ clobbering of context between the add and add,dc instructions. */
This #if looks good to me.
Note HP compilers also define _PA_RISC2_0 when generating PA 2.0
assembly code.
Thanks,
Dave
--
John David Anglin [email protected]
