ARM long branch stubs: pic take 2

Christophe LYON christophe.lyon@st.com
Fri Feb 27 16:42:00 GMT 2009
On 26.02.2009 20:01, Paul Brook wrote:
> On Wednesday 25 February 2009, Christophe LYON wrote:
>> +/* Thumb -> Thumb long branch stub, PIC. Used on architectures which
>> +   support only this mode, or on V4T where it is expensive to switch
>> +   to ARM.  */
>> +static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] =
>> +  {
>> +    THUMB16_INSN(0xb401),             /* push {r0} */
> 
> The EABI specifies that veneers may only use the stack on M profile devices 
> (i.e. when ARM mode is not available).
> 

I have just updated my copy of EABI, and saw the sentence you are 
referring to.

So this means that the sample code you provided in 
http://sourceware.org/ml/binutils/2009-02/msg00224.html should also have 
a variant for Thumb -> Thumb stub (pic and non-pic) on V4T.

I'll give a look at that.

Thanks

Christophe.



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