Ov3rM1nd wrote:
> Hi,
>
> Is there a way to specify attributes of variables? Like in gcc, example:
>
> typedef struct __attribute__((aligned(2), packed))
> {
> MAC_ADDR DestMACAddr;
> MAC_ADDR SourceMACAddr;
> WORD_VAL Type;
> } ETHER_HEADER;
>
> We would have a structure 2 bytes aligned and packed.
Did you find an answer to this question? I have pretty much the same
issue but with an asm file. I'd like to have a specific structure word
aligned.
In assembly, you can add .even or .odd as a statement to ensure that the
instruction counter is placed on an even or odd instruction. I have the
following situation though:
In my assembly file, the structure is even aligned but then I link the
outputted rel file with my c firmware and the structure is no longer
even aligned due to its placement withing the firmware binary. If I
then change the .even to .odd, It works. Later, after changing the
firmware, I may have to switch it back to .even. I can't seem to find a
way to tell the assembly output to always be even aligned without
specifying it as an ABS section instead of REL section. Perhaps using
an ABS section is the better way to go but I haven't experimented with
this as much.
-Dennis
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