[PATCH] Recognize riscv32be, and riscv64be

[Kito Cheng]

Recently RISC-V community got patches big-endian support for binutils,
and we'd like to accept that, however before accept that I think it
would be better to upstream config.sub and config.guess change here :)

It's my check result on Ubuntu 18.04:

 $ make check
 cd testsuite && bash config-guess.sh && rm uname
 PASS: config.guess checks (131 tests)
 cd testsuite && bash config-sub.sh
 PASS: config.sub checks (830 tests)
 PASS: config.sub idempotency checks (767 tests)
 PASS: config.sub canonicalise each config.guess testcase (131 tests)

* config.guess (riscv32be:Linux:*:*, riscv64be:Linux:*:*): Recognize.
* config.sub (riscv32be, riscv64be): Likewise.
* doc/config.guess.1: Regenerate.
* doc/config.sub.1: Likewise.
* testsuite/config-guess.data: Add test cases for riscv32be, and riscv64be.
* testsuite/config-sub.data (riscv32be, riscv64be): Add test cases.
---
 config.guess                |  4 ++--
 config.sub                  |  4 ++--
 doc/config.guess.1          |  2 +-
 doc/config.sub.1            |  2 +-
 testsuite/config-guess.data |  2 ++
 testsuite/config-sub.data   | 11 +++++++++++
 6 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/config.guess b/config.guess
index 7f74817..0a54737 100755
--- a/config.guess
+++ b/config.guess
@@ -2,7 +2,7 @@
 # Attempt to guess a canonical system name.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-12-22'
+timestamp='2020-12-31'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -1087,7 +1087,7 @@ EOF
     ppcle:Linux:*:*)
        echo powerpcle-unknown-linux-"$LIBC"
        exit ;;
-    riscv32:Linux:*:* | riscv64:Linux:*:*)
+    riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | 
riscv64be:Linux:*:*)
        echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
        exit ;;
     s390:Linux:*:* | s390x:Linux:*:*)
diff --git a/config.sub b/config.sub
index 90bb8ae..4a91594 100755
--- a/config.sub
+++ b/config.sub
@@ -2,7 +2,7 @@
 # Configuration validation subroutine script.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-12-22'
+timestamp='2020-12-31'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -1230,7 +1230,7 @@ case $cpu-$vendor in
                        | powerpc | powerpc64 | powerpc64le | powerpcle | 
powerpcspe \
                        | pru \
                        | pyramid \
-                       | riscv | riscv32 | riscv64 \
+                       | riscv | riscv32 | riscv32be | riscv64 | riscv64be \
                        | rl78 | romp | rs6000 | rx \
                        | s390 | s390x \
                        | score \
diff --git a/doc/config.guess.1 b/doc/config.guess.1
index cefa32b..d859714 100644
--- a/doc/config.guess.1
+++ b/doc/config.guess.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.16.
-.TH CONFIG.GUESS "1" "December 2020" "GNU config.guess (2020-12-22)" "User 
Commands"
+.TH CONFIG.GUESS "1" "December 2020" "GNU config.guess (2020-12-31)" "User 
Commands"
 .SH NAME
 config.guess \- guess the build system triplet
 .SH SYNOPSIS
diff --git a/doc/config.sub.1 b/doc/config.sub.1
index 6727b93..b559c34 100644
--- a/doc/config.sub.1
+++ b/doc/config.sub.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.16.
-.TH CONFIG.SUB "1" "December 2020" "GNU config.sub (2020-12-22)" "User 
Commands"
+.TH CONFIG.SUB "1" "December 2020" "GNU config.sub (2020-12-31)" "User 
Commands"
 .SH NAME
 config.sub \- validate and canonicalize a configuration triplet
 .SH SYNOPSIS
diff --git a/testsuite/config-guess.data b/testsuite/config-guess.data
index 7ea8766..155e9ce 100644
--- a/testsuite/config-guess.data
+++ b/testsuite/config-guess.data
@@ -104,6 +104,8 @@ ppc64le | 3.1.0 | Linux | ignored | ignored | 
powerpc64le-unknown-linux-gnu
 riscv | 1.0 | Twizzler | ignored | ignored | riscv-unknown-twizzler
 riscv32 | ignored | Linux | ignored | ignored | riscv32-unknown-linux-gnu
 riscv64 | ignored | Linux | ignored | ignored | riscv64-unknown-linux-gnu
+riscv32be | ignored | Linux | ignored | ignored | riscv32be-unknown-linux-gnu
+riscv64be | ignored | Linux | ignored | ignored | riscv64be-unknown-linux-gnu
 s390x | 5.6 | SunOS | ignored | ignored | s390x-ibm-solaris2.6
 sun3 | 4.0 | SunOS | ignored | ignored | m68k-sun-sunos4.0
 sun4 | 5.6 | SunOS | ignored | ignored | sparc-sun-solaris2.6
diff --git a/testsuite/config-sub.data b/testsuite/config-sub.data
index 5dd9b8e..a6fd557 100644
--- a/testsuite/config-sub.data
+++ b/testsuite/config-sub.data
@@ -588,6 +588,17 @@ riscv64-company-elf                                
riscv64-company-elf
 riscv64-elf                                    riscv64-unknown-elf
 riscv64-hcos                                   riscv64-unknown-hcos
 riscv64-linux                                  riscv64-unknown-linux-gnu
+riscv32be                                      riscv32be-unknown-none
+riscv32be-company-elf                          riscv32be-company-elf
+riscv32be-company-hcos                         riscv32be-company-hcos
+riscv32be-elf                                  riscv32be-unknown-elf
+riscv32be-linux                                        
riscv32be-unknown-linux-gnu
+riscv64be                                      riscv64be-unknown-none
+riscv64be-company-elf                          riscv64be-company-elf
+riscv64be-elf                                  riscv64be-unknown-elf
+riscv64be-hcos                                 riscv64be-unknown-hcos
+riscv64be-linux                                        
riscv64be-unknown-linux-gnu
+riscv64be-company-linux                                
riscv64be-company-linux-gnu
 rl78                                           rl78-unknown-none
 rl78-linux                                     rl78-unknown-linux-gnu
 roadrunner                                     i386-sun-sunos4.0.2
-- 
2.29.2