Initial patch that Add support for chromium on mips64el with use seccomp_bpf has just been submitted for a review.

It can be viewed at:
https://chromium-review.googlesource.com/c/571385/

The issue seems to be out of TE-scope. Hence, adding label TE-NeedsTriageHelp for further investigation.

Thanks...!!

I guess we need to look at that CL.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/534d7ce2af699715acfc4fe516ef3c2ffee65bc5

commit 534d7ce2af699715acfc4fe516ef3c2ffee65bc5
Author: Wang Qing <wangqing-hf@loongson.cn>
Date: Mon Sep 18 23:35:59 2017

Add support for using seccomp_bpf on mips64el.

Currently, seccomp_bpf is not supported on mips64el, and the build 
configuration sets use_seccomp_bpf=false on mips64el. This CL adds support
for seccomp-bpf on mips64el, and resolves many compiler errors when
compiling on mips64el.

R= machenbach@chromium.org, brettw@chromium.org
TBR=jorgelo

Bug:  742738 
Change-Id: I79c5d1800c0a198a70c1f19a818885b726cbcc4f
Reviewed-on: https://chromium-review.googlesource.com/571385
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Brett Wilson <brettw@chromium.org>
Commit-Queue: Chris Palmer <palmer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#502712}
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/AUTHORS
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/base/macros.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/content/common/sandbox_linux/sandbox_seccomp_bpf_linux.cc
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/features.gni
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/BUILD.gn
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/bpf_dsl/linux_syscall_ranges.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/bpf_dsl/seccomp_macros.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/bpf_dsl/syscall_set.cc
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/seccomp-bpf-helpers/syscall_sets.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/seccomp-bpf/syscall.cc
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/system_headers/linux_seccomp.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/system_headers/linux_signal.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/system_headers/linux_syscalls.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/system_headers/linux_ucontext.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/system_headers/mips64_linux_syscalls.h
[add] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/system_headers/mips64_linux_ucontext.h
[modify] https://crrev.com/534d7ce2af699715acfc4fe516ef3c2ffee65bc5/sandbox/linux/system_headers/mips_linux_syscalls.h

when built with clang, macros.h produces an error:

../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF obj/base/base/important_file_writer.o.d -DV8_DEPRECATION_WARNINGS -DNO_TCMALLOC -DSAFE_BROWSING_DB_REMOTE -DCHROMIUM_BUILD -DFIELDTRIAL_TESTING_ENABLED -DCR_CLANG_REVISION=\"313222-1\" -D_FILE_OFFSET_BITS=64 -DANDROID -DHAVE_SYS_UIO_H -DANDROID_NDK_VERSION_ROLL=r12b_1 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_FORTIFY_SOURCE=2 -DCOMPONENT_BUILD -D__GNU_SOURCE=1 -D__compiler_offsetof=__builtin_offsetof -Dnan=__builtin_nan -Dsnprintf=snprintf -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DBASE_IMPLEMENTATION -I../.. -Igen -Igen/base/base_jni_headers -Igen/base/base_jni_headers/base -Igen/android_runtime_jni_headers/base -I../../third_party/android_tools/ndk/sources/android/cpufeatures -fno-strict-aliasing --param=ssp-buffer-size=4 -fstack-protector -Wno-builtin-macro-redefined -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -funwind-tables -fPIC -pipe -fcolor-diagnostics -ffunction-sections -fno-short-enums -fintegrated-as --target=mips64el-linux-androideabi --target=mips64el-linux-android -march=mips64el -mcpu=mips64r6 -mmsa -mfp64 -Wall -Werror -Wextra -Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-covered-switch-default -Wno-unneeded-internal-declaration -Wno-inconsistent-missing-override -Wno-undefined-var-template -Wno-nonportable-include-path -Wno-address-of-packed-member -Wno-unused-lambda-capture -Wno-user-defined-warnings -Wno-enum-compare-switch -Wno-tautological-unsigned-zero-compare -fomit-frame-pointer -g2 -fvisibility=hidden -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.so -Xclang -add-plugin -Xclang find-bad-constructs -Xclang -plugin-arg-find-bad-constructs -Xclang check-auto-raw-pointer -Xclang -plugin-arg-find-bad-constructs -Xclang check-ipc -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -Wno-char-subscripts -Wexit-time-destructors -Wexit-time-destructors -O2 -fno-ident -fdata-sections -ffunction-sections -std=gnu++14 -fno-rtti -isystem../../third_party/android_tools/ndk/sources/cxx-stl/llvm-libc++/libcxx/include -isystem../../third_party/android_tools/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/include -isystem../../third_party/android_tools/ndk/sources/android/support/include --sysroot=../../third_party/android_tools/ndk/platforms/android-21/arch-mips64 -fno-exceptions -fvisibility-inlines-hidden -c ../../base/files/important_file_writer.cc -o obj/base/base/important_file_writer.o
In file included from ../../base/files/important_file_writer.cc:5:
In file included from ../../base/files/important_file_writer.h:11:
In file included from ../../base/callback.h:9:
In file included from ../../base/callback_internal.h:13:
../../base/macros.h:22:9: error: '__mips64__' macro redefined [-Werror,-Wmacro-redefined]
#define __mips64__
        ^
<built-in>:360:9: note: previous definition is here
#define __mips64__ 1
        ^
1 error generated.



I'm actually testing outside of chromium, for libyuv, but the build should be similar:

gn gen out/Release "--args=is_debug=false target_os=\"android\" target_cpu=\"mips64el\" mips_arch_variant=\"r6\" mips_use_msa=true is_component_build=true is_clang=true"
ninja -v -C out/Release libyuv_unittest

Could you add an ifdef around those macros?

OK。
Do I need to reset a new issue? 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2d4aa3a485ad0e7dc9b11605972def9e907ac64a

commit 2d4aa3a485ad0e7dc9b11605972def9e907ac64a
Author: Gordana Cmiljanovic <gordana.cmiljanovic@imgtec.com>
Date: Fri Sep 22 14:25:18 2017

Fix __mips64__ macro redefinition

This fixes macro redefinition introduced by:
https://chromium-review.googlesource.com/c/chromium/src/+/571385

Bug:  742738 ,  766913 
Change-Id: Ie2583e3069da939b73208c92ba7c574417ece1af
Reviewed-on: https://chromium-review.googlesource.com/673185
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@google.com>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#503731}
[modify] https://crrev.com/2d4aa3a485ad0e7dc9b11605972def9e907ac64a/base/macros.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/60c5e60549ac037c8fdb1075682180b22fe0c68c

commit 60c5e60549ac037c8fdb1075682180b22fe0c68c
Author: Gordana Cmiljanovic <gordana.cmiljanovic@imgtec.com>
Date: Fri Sep 22 17:12:27 2017

Support seccomp-bpf for mips64el in Android

In addition to:
https://chromium-review.googlesource.com/c/chromium/src/+/571385

Bug:  742738 
Change-Id: I7c2ed6bf2ff5b7a3b9ec2a06bc1cbfd560c1aa99
Reviewed-on: https://chromium-review.googlesource.com/676849
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#503775}
[modify] https://crrev.com/60c5e60549ac037c8fdb1075682180b22fe0c68c/sandbox/linux/seccomp-bpf-helpers/baseline_policy_android.cc

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