am: 808f4aae

Change-Id: Ic9d4379eb08863289825d3d41be3836b3ca1846e

am: 7b817cb1

Change-Id: I6fc48248643e41de96bfa5720b2f259d63b10fdb

am: 1702a216

Change-Id: I1aa6eaa83794ec80861a833c5f6ca138d2adeb3a

Bug: b/73539603
Test: ./toolchain/binutils/build.py --host linux --arch arm
Change-Id: I7cd2706464093e2be058917996b2eb2bb7ce9663

am: 458e1050

Change-Id: If1de058fec73304f7d5819bf30c10c629b79aed5

am: 63404a75

Change-Id: I4b617b2eb231d4e266494f8776526481c3c76def

am: e1731d4f

Change-Id: I72f9f3469df1468902ddb85e07c892f59fb37ac1

am: 3bd585db

Change-Id: Ibed995d46f9311d7b622443b79f4ff9029e8bb92

am: 9065710f

Change-Id: I7aa303089bfe4a316ec0a679e2e3ce07afb69beb

am: 21352c8f

Change-Id: I702bbc0e9ce37813ad890e431360cc730245ca4f

The Darwin toolchain builds 32-bit binaries by default. Might as well
be explicit for all platforms.

Test: ./build.py --arch arm64 --host linux
Bug: None
Change-Id: I350ab805441aa99f45c7166b7a27840438d6bf75

Test: ./build.py --arch arm64 --host linux
Bug: https://issuetracker.google.com/70838247
Change-Id: I70506b9b12d2d904e109536a01276feb7582adc5

am: 26ab522f

Change-Id: I0e7d3056000d9c16ff5876854ee4c26014659827

am: 9723abb2

Change-Id: I27d5332b2d97354159bf511139352196ca41a470

am: bf0c2e88

Change-Id: Ica142cb88d2ac421f2f1aba11010980086bd144e

am: 68a89309

Change-Id: I063064fa7764a74657c53e850e617849dc1b3a47

am: 0b0b921f

Change-Id: If9fac9e82d13881b5a1258e3a40fe266f30deb75

am: 45d25132

Change-Id: I20c8df7226ce0f850ced323edadfb1eb7bf534e0

Test: ./build.py --arch arm64 --host linux
Bug: None
Exempt-From-Owner-Approval: trivially correct
Change-Id: I3339bfa694be929ad44b87d75a4cf3621b58451c

We need this change to find LLVMgold.dll's libwinpthread-1.dll dependency.
The same modification was already applied to the Android gold linker:
https://android-review.googlesource.com/c/toolchain/binutils/+/438069.

Test: toolchain/gcc/build.py --toolchain aarch64-linux-android \
          --host windows64
Test: ./build.py --arch=arm --host win64

Bug: https://github.com/android-ndk/ndk/issues/313
Bug: https://github.com/android-ndk/ndk/issues/632
Change-Id: I0af8716bdc90e2d88954e7790a67da0d47b88c96

am: 832a142a

Change-Id: I4cbefa5d233526d44220eeb8c3720afbd018dcf3

am: 31eead53

Change-Id: I1052ffdeab277410e8ba51312a68236d7b2ad69d

am: 3c7a1bd9

Change-Id: I3a3d46fe7d09e9905af7eddaebc4b6c4d1b91da1

This change modifies the encoding used in SHT_RELR sections to a simpler
version that gives better results. This encoding was suggested by Andrew
Grieve and is described in this post on generic-abi@googlegroups.com:
    https://groups.google.com/d/msg/generic-abi/bX460iggiKg/Pi9aSwwABgAJ

Bug: None
Test: 'gold --experimental-use-relr' creates PIE binaries with
      '.relr.dyn' sections to store relative relocations using
      the new encoding.

Change-Id: I0dd0a7e0767210d06f29a86b97c5caded05b91e9

am: b36afa63

Change-Id: Ibb879207305e5cf6cb82f566d66e686c69c6cba0

am: ffed3e42

Change-Id: Iac17f2a5055b880cb2a1a20b4e1a188bf6b4393a

am: 6fa214b6

Change-Id: I6183887b19859a279ff337eea4b4754864a7a0ab

Test: ./toolchain/binutils/build.py  --arch arm --host win
Test: ./toolchain/binutils/build.py  --arch arm --host win64
Change-Id: I0a47faa82c9690acf2ea3e50f8bcb812fdbc6fc9

am: 06e6ec4b

Change-Id: I93b1e295ece667dc479205a5ba55bede9b57b915

am: 6587210b

Change-Id: Ie06d8322686ebb8a314efe58ff27ff0c4104dde7

am: 93c5619e

Change-Id: I9aaa142280be9373fc2fe2fbad99fda593d22cfa

This change adds experimental support for SHT_RELR sections, proposed
here: https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg

SHT_RELR sections are supported for arm, aarch64, and x86_64 targets.
To enable them, pass '--experimental-use-relr' flag to gold.

Definitions for the new ELF section type and dynamic array tags, as well
as the encoding used in the new section are all under discussion and are
subject to change. Use with caution!

Bug: None
Test: 'gold --experimental-use-relr' creates PIE binaries with
      '.relr.dyn' sections to store relative relocations.

Change-Id: Iefb4ef5ad95852f4964adf6c8e9b3708a9bdb5f8

am: 829c44f0

Change-Id: I325af68eef7637c14ec6bbad8bc140a6687fb4ff

am: 10e0620d

Change-Id: I90b0051196e5b3b9f7aaa96c14073ec8985e387c

am: d97c8039

Change-Id: I0061c82bb901bcf87f2ad74a11225290065ad9b4

Some versions of the Android dynamic linker (e.g. N) print a warning:

    WARNING: linker: /data/local/tmp/a.out: unsupported flags DT_FLAGS_1=0x8000000

${target} will be something like:

 - arm-unknown-linux-androideabi
 - aarch64-unknown-linux-android
 - i686-pc-linux-android

Bug: https://github.com/android-ndk/ndk/issues/602
Test: manual:
  1. create a standalone ARM64 toolchain with NDK r16b
  2. echo 'int main() {}' > justmain.c
  3. ~/stand-arm64-21-libc++-r16b/bin/clang justmain.c -pie -fPIE \
         -fuse-ld=bfd && \
         readelf -d a.out | grep FLAG
     -- OUTPUT: 0x000000006ffffffb (FLAGS_1)            Flags: 8000000
  4. ~/stand-arm64-21-libc++-r16b/bin/clang justmain.c -pie -fPIE \
         -fuse-ld=bfd \
         -B ~/android/ndk/out/binutils/linux/arm64/install/binutils-arm64-linux/aarch64-linux-android/bin && \
         readelf -d a.out | grep FLAG
     -- OUTPUT: nothing
Change-Id: I040b6edbd8d7943b790db0ef19b76cfdffc1ccdf

am: a1ed3ec1

Change-Id: I51796650591f2d3d10e4ea0b98581be011949cab