|author||Paul E. Murphy <email@example.com>||Wed Dec 09 10:16:11 2020 -0600|
|committer||Lynn Boger <firstname.lastname@example.org>||Mon Feb 22 21:50:09 2021 +0000|
ppc64asm,ppc64map: improve gnu branch decoding, and other misc Rewrite the branch decoding to be more consistent with objdump. Comments are taken from ISA 3.1 sections on the BO field (book i, 2.4), and Appendix C.2 for extended branch mnemonics. Also, generate all interesting cases to verify. Interesting cases are those which don't choke objdump (e.g not setting z bits in BO, or setting at to 0b01). Likewise, fixup handling of mtfs* instructions. The field names are similar to condition registers, but these operate on FPSCR bits and fields. Decode them as immediates, similar to objdump. Likewise, when printing CR bits, use gnu/ISA syntax of 4*crN+B when N > 0, and B is a named CR bit. Likewise, when running testcode, track the "PC". This keeps the generated tests working without hacks. This requires fixing up some offsets in the handwritten tests. Similarly, allow testing of multiple files in the test directory which are prefixed with "decode". Likewise, allow appropriately prefixed to run these tests too. This allows running tests on non-native systems (e.g with IBM's advance toolchain on an x86 host). Change-Id: I1d6b2fc78a22a182524fdec596f05a10d25363c5 Reviewed-on: https://go-review.googlesource.com/c/arch/+/293270 Trust: Carlos Eduardo Seo <email@example.com> Run-TryBot: Carlos Eduardo Seo <firstname.lastname@example.org> TryBot-Result: Go Bot <email@example.com> Reviewed-by: Lynn Boger <firstname.lastname@example.org>
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