[PATCH, BINUTILS, AARCH64, 3/8] Add Pointer Arithmetic instructions in Memory Tagging Extension

Richard Earnshaw (lists) Richard.Earnshaw@arm.com
Tue Oct 30 09:46:00 GMT 2018


On 09/10/2018 18:24, Sudakshina Das wrote:
> Hi
> 
> This patch is part of the patch series to add support for ARMv8.5-A
> Memory Tagging Extensions.
> (https://developer.arm.com/products/architecture/cpu-architecture/a-profile/exploration-tools)
> Memory Tagging Extension (MTE) is an optional extension to
> ARMv8.5-A and is enabled using the +memtag command line option.
> 
> This patch add support to the Pointer Arithmetic instructions from
> MTE. These are the following instructions added in this patch:
> - SUBP <Xd>, <Xn|SP>, <Xm|SP>
> - SUBPS <Xd>, <Xn|SP>, <Xm|SP>
> - CMPP <Xn|SP>, <Xm|SP>
> where CMPP is an alias to SUBPS XZR, <Xn|SP>, <Xm|SP>
> 
> where
> <Xd> : Is the 64-bit destination GPR.
> <Xn|SP> : Is the 64-bit first source GPR or Stack pointer.
> <Xm|SP> : Is the 64-bit second source GPR or Stack pointer.
> 
> Testing done: Builds and reg tests all pass on aarch64-none-linux-gnu.
> Added test.
> 
> Is this ok for trunk?
> 
> Thanks
> Sudi
> 
> *** opcodes/ChangeLog ***
> 
> 2018-xx-xx  Sudakshina Das  <sudi.das@arm.com>
> 
> 	* aarch64-tbl.h (aarch64_opcode_table): Add subp, subps and
> 	cmpp.
> 	* aarch64-asm-2.c: Regenarated.
> 	* aarch64-dis-2.c: Regenerated.
> 	* aarch64-opc-2.c: Regenerated.
> 
> *** gas/ChangeLog ***
> 
> 2018-xx-xx  Sudakshina Das  <sudi.das@arm.com>
> 
> 	* testsuite/gas/aarch64/armv8_5-a-mte.s: Add tests for subp,
> 	subps and cmpp.
> 	* testsuite/gas/aarch64/armv8_5-a-mte.d: Likewise.
> 
> 

OK with the MTE/MEMTAG issue fixed.

R.



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