[clang] [llvm] [llvm-objcopy][libObject] Add RISC-V big-endian support (PR #146913)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-test-suite` running on `ppc64le-clang-test-suite` while building `clang,llvm` at step 7 "test-build-unified-tree-check-runtimes".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/15901

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 7 (test-build-unified-tree-check-runtimes) failure: test (failure)
******************** TEST 'AddressSanitizer-powerpc64le-linux-dynamic :: TestCases/Posix/halt_on_error-signals.c' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/./bin/clang  -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer -fno-optimize-sibling-calls -gline-tables-only  -m64 -fno-function-sections  -shared-libasan -fsanitize-recover=address -pthread /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/asan/POWERPC64LELinuxDynamicConfig/TestCases/Posix/Output/halt_on_error-signals.c.tmp # RUN: at line 3
+ /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/./bin/clang -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer -fno-optimize-sibling-calls -gline-tables-only -m64 -fno-function-sections -shared-libasan -fsanitize-recover=address -pthread /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/asan/POWERPC64LELinuxDynamicConfig/TestCases/Posix/Output/halt_on_error-signals.c.tmp
In file included from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c:11:
In file included from /usr/include/stdio.h:27:
In file included from /usr/include/bits/libc-header-start.h:33:
/usr/include/features.h:184:3: warning: "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-W#warnings]
  184 | # warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
      |   ^
1 warning generated.
env ASAN_OPTIONS=halt_on_error=false:suppress_equal_pcs=false  /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/asan/POWERPC64LELinuxDynamicConfig/TestCases/Posix/Output/halt_on_error-signals.c.tmp 100 >/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/asan/POWERPC64LELinuxDynamicConfig/TestCases/Posix/Output/halt_on_error-signals.c.tmp.log 2>&1 || true # RUN: at line 5
+ env ASAN_OPTIONS=halt_on_error=false:suppress_equal_pcs=false /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/asan/POWERPC64LELinuxDynamicConfig/TestCases/Posix/Output/halt_on_error-signals.c.tmp 100
+ true
FileCheck --check-prefix=CHECK-COLLISION /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c </home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/asan/POWERPC64LELinuxDynamicConfig/TestCases/Posix/Output/halt_on_error-signals.c.tmp.log || FileCheck --check-prefix=CHECK-NO-COLLISION /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c </home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/asan/POWERPC64LELinuxDynamicConfig/TestCases/Posix/Output/halt_on_error-signals.c.tmp.log # RUN: at line 7
+ FileCheck --check-prefix=CHECK-COLLISION /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c:29:22: error: CHECK-COLLISION: expected string not found in input
 // CHECK-COLLISION: AddressSanitizer: nested bug in the same thread, aborting
                     ^
<stdin>:1:1: note: scanning from here
=================================================================
^
<stdin>:13:10: note: possible intended match here
SUMMARY: AddressSanitizer: use-after-poison /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c:32:12 in error
         ^

Input file: <stdin>
Check file: /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c

-dump-input=help explains the following input dump.

Input was:
<<<<<<
            1: ================================================================= 
check:29'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
            2: ==4011801==ERROR: AddressSanitizer: use-after-poison on address 0x000100020160 at pc 0x00010000219c bp 0x7dfff3dfe4b0 sp 0x7dfff3dfe4d8 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            3: WRITE of size 1 at 0x000100020160 thread T1 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            4:  #0 0x000100002198 in error /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c:32:12 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            5:  #1 0x0001000025fc in receiver /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/asan/TestCases/Posix/halt_on_error-signals.c:66:5 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            6:  #2 0x7ffff752937c in asan_thread_start(void*) /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/lib/asan/asan_interceptors.cpp:239:28 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            7:  #3 0x7ffff7379714 in start_thread (/lib64/libpthread.so.0+0x9714) (BuildId: c885eefbc014018536dd952e969b10ffa48768af) 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...

```

</details>

https://github.com/llvm/llvm-project/pull/146913