On Fri, Mar 21, 2008 at 5:37 PM, Andrew Pinski <[EMAIL PROTECTED]> wrote: > On Fri, Mar 21, 2008 at 5:29 PM, H.J. <[EMAIL PROTECTED]> wrote: > > When passing _Decimal64 or _Decimal128 to a function via stack, how > > should they be aligned? Currently, gcc aligns them at 4byte boundary. > > Is this desirable? > > Shouldn't it always be 4 byte aligned because the SysV ABI only talks > about word alignment? >
DFP is beyond i386 psABI. Gcc aligns _Decimal32 to 4 byte, _Decimal64 to 8 bytes and _Decimal128 to 16bytes. The question is what is the best alignment for them when passing to a functions. H.J.
