[PATCH 0/3] RISC-V: Prepare Privileged Architecture 1.12

[Tsukasa OI]

This patchset adds minimal support for the Privileged Architecture
version 1.12.

This is preparation for my upcoming patchset to add all CSRs as defined
in recently ratified documents.  Because my copyright assignment to FSF
is not complete, this patchset is intentionally designed to be
*not legally significant* (despite large patch size at first glance).

    I haven't even received the assignment form but it's okay because
    it's the holidays.

It also improves testcases for maintainability.  Those changes are hardly
functional but can be a foundation of upcoming changes (by Vineet and me,
at least).

To quote Information for Maintainers of GNU Software
<https://www.gnu.org/prep/maintain/html_node/Legally-Significant.html>,

> A regular series of repeated changes, such as renaming a symbol, is not
> legally significant even if the symbol has to be renamed in many places.




[Patch 1/3: Make testcase indentation consistent]

When "[(SPACE)(TAB)]+" pattern (regex) should be tested in RISC-V
testcases, following 4 files have "[(x*SPACE)(TAB)]+" (x >= 2):

-   gas/testsuite/gas/riscv/option-arch-01a.d
-   gas/testsuite/gas/riscv/priv-reg-version-1p10.d
-   gas/testsuite/gas/riscv/priv-reg-version-1p11.d
-   gas/testsuite/gas/riscv/priv-reg-version-1p9p1.d

They even have different indentation.  For instance, similar
"priv-reg-version-1p10.d" and "priv-reg-version-1p11.d" have different
indentation and that makes making testcases tedious (per-file adoptation
is required).

This commit makes all such instances (except 2 occurrences in
"option-arch-01a.d", which will be unaligned if I change that) to
"[(1*SPACE)(TAB)]+".

All those changes are considered non-creative.



[Patch 2/3: Unify "access all CSRs" testcases]

On some RISC-V testcases, we have to test access to all (or almost all)
CSRs.  However, we have two similar but separate files exist:

-   gas/testsuite/gas/riscv/priv-reg.s
-   gas/testsuite/gas/riscv/priv-reg-fail-read-only-01.s

This commit moves main contents of "priv-reg.s" to "priv-reg-access-all.s"
and makes two files above include that common source file.

As a side effect, many .d files need additional "-I$srcdir/$subdir" option.

This idea is from gas/testsuite/gas/arm/cde.[ds].
Only two lines (.include directives) are considered minimally creative.



[Patch 3/3: Add Privileged Architecture version 1.12]

This commit adds minimal support (with help string and testcases) to the
Privileged Architecture version 1.12.

Unlike Vineet Gupta's patch,

1.  It also adds help string
2.  It also copies "1p11" testcases to "1p12"
    (with non-creative version adoptation)

(cf.) Vineet Gupta's privileged architecture 1.12 patch:
<https://sourceware.org/pipermail/binutils/2021-December/118982.html>

Three lines (in total) from three files are considered minimally creative:

-   bfd/cpu-riscv.c
-   bfd/cpu-riscv.h
-   gas/config/tc-riscv.c




>From my view, only 5 lines are minimally creative and all the rest are
non-creative changes (regular series of repeated changes), hoping that
this whole patchset is *not* legally significant.




Tsukasa OI (3):
  RISC-V: Make testcase indentation consistent
  RISC-V: Unify "access all CSRs" testcases
  RISC-V: Add Privileged Architecture version 1.12

 bfd/cpu-riscv.c                               |   1 +
 bfd/cpu-riscv.h                               |   1 +
 gas/config/tc-riscv.c                         |   2 +-
 gas/testsuite/gas/riscv/csr-dw-regnums.d      |   2 +-
 gas/testsuite/gas/riscv/option-arch-01a.d     |   8 +-
 gas/testsuite/gas/riscv/priv-reg-access-all.s | 292 ++++++++++
 gas/testsuite/gas/riscv/priv-reg-fail-fext.d  |   2 +-
 .../gas/riscv/priv-reg-fail-read-only-01.d    |   2 +-
 .../gas/riscv/priv-reg-fail-read-only-01.s    | 267 +--------
 .../gas/riscv/priv-reg-fail-read-only-02.d    |   2 +-
 .../gas/riscv/priv-reg-fail-rv32-only.d       |   2 +-
 .../gas/riscv/priv-reg-fail-version-1p10.d    |   2 +-
 .../gas/riscv/priv-reg-fail-version-1p11.d    |   2 +-
 .../gas/riscv/priv-reg-fail-version-1p12.d    |  11 +
 .../gas/riscv/priv-reg-fail-version-1p12.l    |  24 +
 .../gas/riscv/priv-reg-fail-version-1p9p1.d   |   2 +-
 gas/testsuite/gas/riscv/priv-reg-fail-zkr.d   |   2 +-
 .../gas/riscv/priv-reg-version-1p10.d         | 534 +++++++++---------
 .../gas/riscv/priv-reg-version-1p11.d         | 534 +++++++++---------
 .../gas/riscv/priv-reg-version-1p12.d         | 275 +++++++++
 .../gas/riscv/priv-reg-version-1p9p1.d        | 534 +++++++++---------
 gas/testsuite/gas/riscv/priv-reg.s            | 294 +---------
 22 files changed, 1421 insertions(+), 1374 deletions(-)
 create mode 100644 gas/testsuite/gas/riscv/priv-reg-access-all.s
 create mode 100644 gas/testsuite/gas/riscv/priv-reg-fail-version-1p12.d
 create mode 100644 gas/testsuite/gas/riscv/priv-reg-fail-version-1p12.l
 create mode 100644 gas/testsuite/gas/riscv/priv-reg-version-1p12.d


base-commit: d20236e748ab70e9243960850eef64838f1b9721
-- 
2.32.0