[crosstool-ng/crosstool-ng] 694580: config: arch: riscv: add initial 64-bit support

[Alexey Neyman]

  Branch: refs/heads/master
  Home:   https://github.com/crosstool-ng/crosstool-ng
  Commit: 694580fa60f1e8c16b144fc677e1cb41c153f62e
      https://github.com/crosstool-ng/crosstool-ng/commit/694580fa60f1e8c16b144fc677e1cb41c153f62e
  Author: Paul Walmsley <paul.walmsley@sifive.com>
  Date:   2018-09-10 (Mon, 10 Sep 2018)

  Changed paths:
    M config/arch/riscv.in

  Log Message:
  -----------
  config: arch: riscv: add initial 64-bit support

Add initial rv64 support.  Originally based on suggestions from
Franz Flasch <franz.flasch@gmx.at>.

Cc: Franz Flasch <franz.flasch@gmx.at>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>


  Commit: 05d74f9d63aaeaa8afebf77f3dce64aa2a7fdde6
      https://github.com/crosstool-ng/crosstool-ng/commit/05d74f9d63aaeaa8afebf77f3dce64aa2a7fdde6
  Author: Paul Walmsley <paul.walmsley@sifive.com>
  Date:   2018-09-10 (Mon, 10 Sep 2018)

  Changed paths:
    A samples/riscv64-unknown-linux-gnu/crosstool.config
    A samples/riscv64-unknown-linux-gnu/reported.by

  Log Message:
  -----------
  riscv64: add rv64gc linux-gnu sample

This sample works well for the SiFive U540 device (and similar).

Thanks to Jim Wilson <jimw@sifive.com> for his review, discovering
several bugs (now fixed).

Cc: Jim Wilson <jimw@sifive.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>


  Commit: 9ab0c733cd72dddfa7ed491d87e47bb75a5fc7ca
      https://github.com/crosstool-ng/crosstool-ng/commit/9ab0c733cd72dddfa7ed491d87e47bb75a5fc7ca
  Author: Alexey Neyman <stilor@att.net>
  Date:   2018-09-21 (Fri, 21 Sep 2018)

  Changed paths:
    M config/arch/riscv.in
    A samples/riscv64-unknown-linux-gnu/crosstool.config
    A samples/riscv64-unknown-linux-gnu/reported.by

  Log Message:
  -----------
  Merge pull request #1020 from sifive/dev/paulw/rv64-fixed

riscv: add rv64gc support


Compare: https://github.com/crosstool-ng/crosstool-ng/compare/d5900debd397...9ab0c733cd72
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