Thread (10 messages) flat view 10 messages, 5 authors, 2011-01-26
STALE5709d

[PATCH v4] ARM: Thumb-2: Symbol manipulation macros for function body copying

From: Dave Martin <hidden>
Date: 2011-01-17 15:35:57
Also in: linux-omap

Hi,

On Mon, Jan 17, 2011 at 2:02 PM, Jean Pihet [off-list ref] wrote:

[...]
Note that aligning the source and destination pointers to a multiple
of 8 bytes has an impact on the behavio(u)r and so must be carefully
thought and tested on OMAP1/2/3 platforms.
Do you have any specific concerns regarding this?

Currently, the only issue I can think of is that the need to allocate
aligned memory from the SRAM will increase the total amount allocated,
which could be a problem if we end up overflowing the available SRAM.

This does not appear to happen in the case I've tested -- I currently
round up the amount allocated in omap_sram_push to be a multiple of 8
bytes.  This, combined with a couple of ".align 3" directives, is
enough to get me a booting system on omap3... but I haven't tested
exhaustively.

Cheers
---Dave
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