androm3da

#!/bin/bash

#  Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
#  SPDX-License-Identifier: BSD-3-Clause

# Take a baremetal or QuRT toolchain from e.g. https://github.com/snapdragon-toolchain/hexagon-sdk/releases
# and combine it with a linux toolchain from https://github.com/qualcomm/toolchain_for_hexagon/releases

set -euo pipefail

androm3da

#!/bin/bash

cd $(mktemp -d)
wget https://artifacts.codelinaro.org/artifactory/codelinaro-toolchain-for-hexagon/23.1.0-rc1/rootfs.ext2.gz
gunzip rootfs.ext2.gz

# qemu-img create -f qcow2 my_disk.qcow2 10G
# dd if=rootfs.ext2 of=my_disk.qcow2 bs=1M conv=notrunc
# sudo modprobe nbd max_part=16
# sudo qemu-nbd --connect=/dev/nbd0 my_disk.qcow2

androm3da

#!/bin/bash
# Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
# SPDX-License-Identifier: BSD-3-Clause-Clear
#
# Build and run a C++ exception handling test for Hexagon Linux using
# clang+llvm-22.1.4-cross-hexagon-unknown-linux-musl and qemu-hexagon.

set -euo pipefail

TOOLCHAIN=/local/mnt/workspace/install/clang+llvm-22.1.4-cross-hexagon-unknown-linux-musl/x86_64-linux-gnu

androm3da

Bug Report: memd + dealloc_return packet causes callee-saved register corruption

Summary

The Hexagon compiler/assembler (clang 21.1.8) generates packets containing both a memd register-pair load and a dealloc_return instruction. When executed under QEMU system emulation, this packet corrupts callee-saved registers: the upper byte of a restored kernel pointer is zeroed (e.g., 0xc0ca5960 becomes 0x00ca5960), leading to a page fault and kernel panic.

androm3da

Hexagon Backend Release Report: LLVM 21.x

Timeframe: January 29, 2025 - July 15, 2025 Report Generated: January 20, 2026

Summary

During the LLVM 21.x development cycle, the Hexagon backend saw 27 merged pull requests and 10 issues reported.

Merged Pull Requests by Category

androm3da

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AAAAABIAAAAuAAAAAAAAAAAAAAASAAAAAQAAAAcAAAABAAAAGgAAAAAAAAAAAAAABwAAAAcAAAAA
AAAABQAAAAAAAAAGAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAEAAAADAAAAAAAAAABf

androm3da

#!/bin/bash

set -euo pipefail

echo creating init file
echo <<EOF > input.S
.section .text
EOF
echo '' > keep_syms.txt
for i in $(seq 0 100000)

androm3da

FROM ubuntu:16.04
VOLUME ['/tmp/']
RUN apt-get update && apt-get install -y --force-yes build-essential subversion chrpath wget file python python-virtualenv cmake ninja-build tar tcl && \
    cd /tmp && \
    wget --quiet https://raw.githubusercontent.com/llvm/llvm-project/master/llvm/utils/release/test-release.sh && \
    wget --quiet https://releases.llvm.org/8.0.0/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz && \
    tar xf clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz && \
    chmod +x test-release.sh && \
    /usr/bin/env CXX=/tmp/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-14.04/bin/clang++ \

androm3da

+ mkdir obj_target_v60_83latest_test-suite
+ cd obj_target_v60_83latest_test-suite
+ cmake -GNinja -DCMAKE_C_COMPILER=hexagon-linux-clang -DCMAKE_CXX_COMPILER=hexagon-linux-clang++ -C/local/mnt/workspace/testing/test-suite/cmake/caches/O0.cmake -DTEST_SUITE_EXTRA_C_FLAGS=-mv60 -DTEST_SUITE_EXTRA_CXX_FLAGS=-mv60 -DTEST_SUITE_EXTRA_EXE_LINKER_FLAGS=-mv60 -DARCH:STRING=Hexagon -DTEST_SUITE_CXX_ABI_LIBNAME:STRING=libc++abi -DBENCHMARK_USE_LIBCXX:BOOL=ON -DTEST_SUITE_REMOTE_CLIENT:STRING=ssh -DTEST_SUITE_REMOTE_HOST:STRING=aus-dragon820-05 -DTEST_SUITE_LIT_FLAGS:STRING=-vj4 -DFP_TOLERANCE:STRING=1.5 -DFP_ABSTOLERANCE:STRING=1.5 /local/mnt/workspace/testing/test-suite
loading initial cache file /local/mnt/workspace/testing/test-suite/cmake/caches/O0.cmake
-- The C compiler identification is Clang 7.0.0
-- The CXX compiler identification is Clang 7.0.0
-- Check for working C compiler using: Ninja
-- Check for working C compiler using: Ninja -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info -

androm3da

#!/bin/bash -x

set -euo pipefail

test_suite=$(readlink -f ${1-../test-suite/})
PATH=/prj/dsp/qdsp6/release/internal/HEXAGON/branch-8.4lnx/latest/Tools/bin:$PATH
qemu=~bcain/src/hexagon-clang/qemu.sh
Q6_ARCH=v65
opt=O0
flavor=qemu_${Q6_ARCH}_84latest_${opt}