diff options
| -rw-r--r-- | src/H5detect.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/src/H5detect.c b/src/H5detect.c index eb8f9ac..f0895b1 100644 --- a/src/H5detect.c +++ b/src/H5detect.c @@ -112,14 +112,14 @@ precision (detected_t *d) */ for (n=0; n<d->size && d->perm[n]<0; n++) /*void*/; d->precision = 8*(d->size-n); - d->offset = 8*n; + d->offset = 0; } else if (d->perm[d->size - 1] < 0) { /* * Higher addresses are padded. */ for (n=0; n<d->size && d->perm[d->size-(n+1)]; n++) /*void*/; d->precision = 8*(d->size-n); - d->offset = 0; + d->offset = 8*n; } else { /* * No padding. @@ -311,7 +311,7 @@ precision (detected_t *d) #if defined(H5_HAVE_LONGJMP) && defined(H5_HAVE_SIGNAL) #define ALIGNMENT(TYPE,INFO) { \ char *volatile _buf=NULL; \ - volatile TYPE _val=0; \ + volatile TYPE _val=1; \ volatile TYPE _val2; \ volatile size_t _ano=0; \ void (*_handler)(int) = signal(SIGBUS, sigbus_handler); \ @@ -322,17 +322,20 @@ precision (detected_t *d) if (_ano<NELMTS(align_g)) { \ *((TYPE*)(_buf+align_g[_ano])) = _val; /*possible SIGBUS or SEGSEGV*/ \ _val2 = *((TYPE*)(_buf+align_g[_ano])); /*possible SIGBUS or SEGSEGV*/ \ - /* Cray Check: This section helps detect alignment on Cray's */ \ + /* Cray Check: This section helps detect alignment on Cray's */ \ /* vector machines (like the SV1) which mask off */ \ - /* pointer values when pointing to non-word aligned */ \ - /* locations with pointers that are supposed to be */ \ - /* word aligned. -QAK */ \ - memset(_buf, 0xff, sizeof(TYPE)+align_g[NELMTS(align_g)-1]); \ - memcpy(_buf+align_g[_ano]+(INFO.offset/8),((char *)&_val)+(INFO.offset/8),(INFO.precision/8)); \ - _val2 = *((TYPE*)(_buf+align_g[_ano])); \ + /* pointer values when pointing to non-word aligned */ \ + /* locations with pointers that are supposed to be */ \ + /* word aligned. -QAK */ \ + memset(_buf, 0xff, sizeof(TYPE)+align_g[NELMTS(align_g)-1]); \ + if(INFO.perm[0]) /* Big-Endian */ \ + memcpy(_buf+align_g[_ano]+(INFO.size-((INFO.offset+INFO.precision)/8)),((char *)&_val)+(INFO.size-((INFO.offset+INFO.precision)/8)),(INFO.precision/8)); \ + else /* Little-Endian */ \ + memcpy(_buf+align_g[_ano]+(INFO.offset/8),((char *)&_val)+(INFO.offset/8),(INFO.precision/8)); \ + _val2 = *((TYPE*)(_buf+align_g[_ano])); \ if(_val!=_val2) \ longjmp(jbuf_g, 1); \ - /* End Cray Check */ \ + /* End Cray Check */ \ (INFO.align)=align_g[_ano]; \ } else { \ (INFO.align)=0; \ |