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[Patch Arm] Add CSDB instruction

Ramana Radhakrishnan ramana.radhakrishnan@foss.arm.com
Tue Jan 9 15:29:00 GMT 2018 
On 1/9/18 3:21 PM, Christophe Lyon wrote:
> On 9 January 2018 at 15:31, Ramana Radhakrishnan
> <ramana.radhakrishnan@foss.arm.com> wrote:
>> Hi,
>>
>>         I'm applying this patch for James Greenhalgh to add the CSDB
>> instruction to the Arm backend. Regression tested on arm-none-eabi with
>> no regressions. Applied to trunk.
>>
> 
> Hi Ramana/James,
> 
> The new test fails on arm*pe targets, I didn't check why.


Sigh, I suspect it's because mapping symbols don't work on PE targets.
I'll take a look.


regards
Ramana

> 
> Christophe
> 
>> Thanks,
>> Ramana
>> --------
>>
>>
>> CSDB is a new instruction which Arm has defined. As it shares the
>> encoding space with  NOP instructions, it is available from Armv3 in Arm
>> mode, and Armv6T2 in Thumb mode.
>>
>> OK? If so, please commit on my behalf as I don't have commit rights over
>> here.
>>
>> Thanks,
>> James
>>
>> ---
>> opcodes/
>>
>> 2018-01-09  James Greenhalgh  <james.greenhalgh@arm.com>
>>
>>         * arm-dis.c (arm_opcodes): Add csdb.
>>         (thumb32_opcodes): Add csdb.
>>
>> gas/
>>
>> 2018-01-09  James Greenhalgh  <james.greenhalgh@arm.com>
>>
>>         * config/tc-arm.c (insns): Add csdb, enable for Armv3 and above
>>         in Arm execution state, and Armv6T2 and above in Thumb execution
>>         state.
>>         * testsuite/gas/arm/csdb.s: New.
>>         * testsuite/gas/arm/csdb.d: New.
>>         * testsuite/gas/arm/thumb2_it_bad.l: Add csdb.
>>         * testsuite/gas/arm/thumb2_it_bad.s: Add csdb.
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