Ian,
By packing the structure, issue got solved but generating more code.
How can I make our cross compiler to generate size of struct { short s;}
as 2 instead of 4 ?
Is it required to change any macro's in port.h?
Please help me.
Thanks,
Siva prasad
On 05/23/2014 09:17 PM, Ian Lance Taylor wrote:
On Fri, May 23, 2014 at 6:51 AM, Sivaprasad
<sivaprasad.pv@xxxxxxxxxxxxxxxxxx> wrote:
On our custom processor there is no constraint for short type variable to
align at 4 byte address, then how to resolve this issue.
The fact that you don't need to align a short on a 2-byte boundary is
why struct { short s; } is aligned on a 2-byte boundary. However,
struct { int i; short s; } has an int field, which I assume must be
aligned on a 4-byte boundary. Therefore the whole struct must be
aligned on a 4-byte boundary. Therefore, in order to make arrays of
the struct work correctly, the size of the struct is aligned to a
4-byte boundary.
Is there any compiler option available ?
-fpack-struct
Be sure to read the warning in the docs.
Ian
