18 Jan
2011
18 Jan
'11
6:31 a.m.
Dear Wolfgang,
On Tuesday 18 January 2011 03:25 AM, Wolfgang Denk wrote:
Dear Aneesh V,
In message4D2B1A90.9030109@ti.com you wrote:
+struct __attribute__ ((__packed__)) emu_hal_params {
- u32 num_params;
- u32 param1;
+};
Why exactly do we need the "__attribute__ ((__packed__))" here?
Because a pointer to it has to be passed to ROM code and ROM code wouldn't expect any padding.
But padding would only be needed if there were any alignment requirements requiring it. There are none here.
Yes. But, is that guaranteed? I didn't want to make it compiler dependent. Isn't it safer to use '__attribute__ ((__packed__))'
Best regards, Aneesh