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Hello, This is an updated patch to include documentation and a NEWS entry for this patch series. (The original patch is here https://sourceware.org/ml/binutils/2019-07/msg00117.html). This is part of a patch series that implements a directive for assembling 16-bit floating point constants for Arm and AArch64. This patch includes a NEWS entry that covers the changes made in this AArch64 patch and the previous Arm patch. This patch implements a float16 directive for assembling 16 bit IEEE 754 floating point numbers for AArch64. The syntax of the directive is: .float16 <0-n decimal numbers> e.g. .float16 0.5 .float16 10.2, NaN, 452.09 The floats will always be encoded using the binary16 format as described in the IEEE 754-2008 standard. There is no need to support Arm's alternative half-precision format since AArch64 only supports the IEEE format. Added testcases to verify the correct encoding (for big and little endian targets) and cross-referenced the encodings with GCC's __fp16 type to ensure consistency. Cross compiled and regtested on aarch64-none-elf and aarch64-none-linux-gnu with no issues. I don't have write access, so if it's OK then could someone commit on my behalf? Thanks, Barney gas/ChangeLog: 2019-08-01 Barnaby Wilks <barnaby.wilks@arm.com> * config/tc-aarch64.c: Add float16 directive and add "Hh" to acceptable float characters. * doc/c-aarch64.texi: Documentation for float16 directive. * testsuite/gas/aarch64/float16-be.d: New test. * testsuite/gas/aarch64/float16-le.d: New test. * testsuite/gas/aarch64/float16.s: New test. * NEWS: Add NEWS entry.
Attachment:
float16-updated-aarch64.txt
Description: float16-updated-aarch64.txt
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