[RFC PATCH v4 0/2] RISC-V: Add support for the Zfa extension

[Christoph Muellner <christoph.muellner@vrull.eu>]

From: Christoph Müllner <christoph.muellner@vrull.eu>

This series adds support for the RISC-V Zfa extension.
It consists of two patches:
1) A clean-up patch from Tsukasa that improves the way we structure
   format string directives.
2) A patch that introduces support for the Zfa extension.

The first patch does not have any dependencies and is suggested to get
merged as early as possible.

The second patch can land once the Zfa specification gets frozen.

Some additional bits to get the full context:
* Tsukasa wrote a first version, which can be found here:
  https://sourceware.org/pipermail/binutils/2022-September/122939.html
* I took over the patch as agreed here:
  https://sourceware.org/pipermail/binutils/2023-March/126753.html

Christoph Müllner (1):
  RISC-V: Add support for the Zfa extension

Tsukasa OI (1):
  RISC-V: Allocate "various" operand type

 bfd/elfxx-riscv.c                  |  39 ++++++++++
 gas/config/tc-riscv.c              | 113 ++++++++++++++++++++++++-----
 gas/doc/c-riscv.texi               |  41 +++++++++++
 gas/testsuite/gas/riscv/zfa-32.d   |  10 +++
 gas/testsuite/gas/riscv/zfa-32.s   |   3 +
 gas/testsuite/gas/riscv/zfa-64.d   |  10 +++
 gas/testsuite/gas/riscv/zfa-64.s   |   3 +
 gas/testsuite/gas/riscv/zfa-fail.d |   3 +
 gas/testsuite/gas/riscv/zfa-fail.l |  12 +++
 gas/testsuite/gas/riscv/zfa-fail.s |  16 ++++
 gas/testsuite/gas/riscv/zfa.d      |  89 +++++++++++++++++++++++
 gas/testsuite/gas/riscv/zfa.s      |  87 ++++++++++++++++++++++
 include/opcode/riscv-opc.h         |  99 +++++++++++++++++++++++++
 include/opcode/riscv.h             |   6 ++
 opcodes/riscv-dis.c                |  42 +++++++++--
 opcodes/riscv-opc.c                |  70 +++++++++++++++++-
 16 files changed, 618 insertions(+), 25 deletions(-)
 create mode 100644 gas/testsuite/gas/riscv/zfa-32.d
 create mode 100644 gas/testsuite/gas/riscv/zfa-32.s
 create mode 100644 gas/testsuite/gas/riscv/zfa-64.d
 create mode 100644 gas/testsuite/gas/riscv/zfa-64.s
 create mode 100644 gas/testsuite/gas/riscv/zfa-fail.d
 create mode 100644 gas/testsuite/gas/riscv/zfa-fail.l
 create mode 100644 gas/testsuite/gas/riscv/zfa-fail.s
 create mode 100644 gas/testsuite/gas/riscv/zfa.d
 create mode 100644 gas/testsuite/gas/riscv/zfa.s

-- 
2.39.2