[Bug 1719] ARM assembly bx without thumb

bugzilla-daemon at rtems.org bugzilla-daemon at rtems.org
Mon Nov 22 18:40:34 UTC 2010


--- Comment #3 from Gedare <giddyup44 at yahoo.com> 2010-11-22 12:40:33 CST ---
(In reply to comment #2)
> Processors without Thumb support sound a bit like stone age.  For which BSP do
> we need this?
I was working on a BSP for a non-thumb ARM, but I have given up for now due to
trouble with the toolchain.  Anyway, there are points in the assembly that
check for thumb, and points that do not, so I thought I should submit this
since it seems inconsistent.

> Why do you use
> +  bne 1f
> +  mov pc, lr
> +  1:
> instead of
> moveq pc, lr
> ?
I just didn't think too hard on the instruction set, I haven't used ARM in

> The line format is:
> <tab>op<tab>op1, op2
Oops, sorry about that.

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