diff options
| -rw-r--r-- | src/longlong.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/longlong.h b/src/longlong.h index 8d7161113..6ee157cda 100644 --- a/src/longlong.h +++ b/src/longlong.h @@ -679,7 +679,13 @@ extern UWtype __MPN(udiv_qrnnd) (UWtype *, UWtype, UWtype, UWtype); /* These macros are for ABI=2.0w. In ABI=2.0n they can't be used, since GCC (3.2) puts longlong into two adjacent 32-bit registers. Presumably this is just a case of no direct support for 2.0n but treating it like 1.0. */ -#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) && defined (_LP64) +/* 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. */ #define add_ssaaaa(sh, sl, ah, al, bh, bl) \ __asm__ ("add%I5 %5,%r4,%1\n\tadd,dc %r2,%r3,%0" \ : "=r" (sh), "=&r" (sl) \ |