[PATCH, BINUTILS, AARCH64, 2/9] Add Data procoessing instructions for ARMv8.5-A

Richard Earnshaw (lists) Richard.Earnshaw@arm.com
Tue Oct 9 14:42:00 GMT 2018


On 19/09/18 15:17, Sudakshina Das wrote:
> Hi
> 
> This patch is part of the patch series to add support for ARMv8.5-A
> extensions.
> (https://developer.arm.com/products/architecture/cpu-architecture/a-profile/docs/ddi0596/a/a64-base-instructions-alphabetic-order)
> 
> 
> This patch adds the data processing instructions that are new to
> ARMv8.5-A.
> 
> 1) There are 2 instructions: xaflag, axflag, that are added
> to manipulate the states of the flag and are used to convert
> between the Arm representation and the fcmp representation.
> 
> 2) The other instructions are rounding instructions which have
> 8 versions based on whether the floating-point number is a
> Single-Precision or Double-Precision number, whether the
> target integer is a 32-bit or 64-bit integer and whether the
> rounding mode is the ambient rounding mode or to zero. Each of
> these instruction is available in both Scalar and Vector forms.
> 
> Since both 1) and 2) have separate identification mechanism and
> it is permissible that a ARMv8.4 compliant implementation may include
> any arbitrary subset of the ARMv8.5 features unless otherwise
> specified, new feature bits are added.
> 
> Testing done: Builds and reg tests all pass on aarch64-none-linux-gnu
> and aarch64-none-elf. Added new test.
> 
> Thanks
> Sudi
> PS. I do not have commit access so if OK can someone apply for me?
> Also the patch was too big to attach due to the regenerated files.
> 
> *** include/ChangeLog ***
> 
> 2018-xx-xx  Sudakshina Das  <sudi.das@arm.com>
> 
>     * opcode/aarch64.h (AARCH64_FEATURE_FLAGMANIP): New.
>     (AARCH64_FEATURE_FRINTTS): New.
>     (AARCH64_ARCH_V8_5): Add both by default.
> 
> *** opcodes/ChangeLog ***
> 
> 2018-xx-xx  Sudakshina Das  <sudi.das@arm.com>
> 
>     * aarch64-tbl.h (aarch64_feature_flagmanip): New.
>     (aarch64_feature_frintts): New.
>     (FLAGMANIP, FRINTTS): New.
>     (aarch64_opcode_table): Add entries for xaflag, axflag
>     and frint[32,64][x,z] instructions.
>     * aarch64-asm-2.c: Regenerate.
>     * aarch64-dis-2.c: Regenerate.
>     * aarch64-opc-2.c: Regenerate.
> 
> *** gas/ChangeLog ***
> 
> 2018-xx-xx  Sudakshina Das  <sudi.das@arm.com>
> 
>     * testsuite/gas/aarch64/armv8_5-a-dp.s: New.
>     * testsuite/gas/aarch64/armv8_5-a-dp.d: New.

Committed.

R.



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