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threadx/scripts/check_clang.sh
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Frédéric Desbiens 990faf670d Enabled execution profiling for Cortex-R5 (#766) 
The Cortex-R5 assembly guarded its execution-profile hooks with only the legacy
TX_ENABLE_EXECUTION_CHANGE_NOTIFY symbol. The documented
TX_EXECUTION_PROFILE_ENABLE configuration initialized profiling without recording
thread or interrupt transitions.

I made all AC5, AC6, GNU, Green Hills, and IAR hooks accept both symbols. I also
extended the port consistency and GNU/LLVM feature checks to cover the current
configuration.

All 849 base assembly files and all 219 TX_EXECUTION_PROFILE_ENABLE files passed
with GCC 14.2.1 and clang 22.1.0. A CMake/Ninja Cortex-R5 profile build emitted
all seven expected hook relocations. Proprietary toolchains were not run.

Assisted-by: Codex (GPT-5) <noreply@openai.com>
2026-09-28 12:45:09 -04:00

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#!/bin/bash
##############################################################################
# Copyright (c) 2026 Eclipse ThreadX contributors
#
# This program and the accompanying materials are made available under the
# terms of the MIT License which is available at
# https://opensource.org/licenses/MIT.
#
# AI Disclosure: This file was largely AI-generated by Claude Code (Opus 5).
# The AI-generated portions may be considered public domain (CC0-1.0)
# and not subject to the project's licence. The human contributor has
# reviewed and verified that the code is correct.
#
# SPDX-License-Identifier: MIT and CC0-1.0
##############################################################################
# Builds the Arm ports with an LLVM based toolchain, in six stages: assemble
# every assembly source of every Arm gnu port, assemble again the parts guarded
# by feature macros, compile the common C sources for one core per architecture
# profile, compile the module manager C sources once per Arm module port, then
# link the example builds, both the script-driven ones and those driven by
# CMake. Only the linking stages need a target C library.
#
# scripts/check_clang.sh # clang from PATH
# scripts/check_clang.sh --clang /path/to/clang
# CLANG=/path/to/clang scripts/check_clang.sh
#
# Options:
# --clang <path> Compiler to use; defaults to $CLANG then to clang.
# --asm-only Skip the C sources and the example builds.
# --no-examples Skip the example builds.
# --quiet Print only failures and the summary.
#
# Exit status is 0 when everything builds and 1 otherwise.
#
# Why this exists: the gnu ports are only ever built with GNU tooling, and GNU
# as accepts several non-canonical forms that LLVM's assembler rejects. Those
# forms accumulated unnoticed. This check also covers Arm Toolchain for
# Embedded, which is LLVM based and is the successor to Arm Compiler 6, so the
# ac6 code paths are exercised here as well.
#
# Arm Toolchain for Embedded releases:
# https://github.com/arm/arm-toolchain/releases
set -u
cd "$(dirname "$(realpath "$0")")/.."
CC="${CLANG:-clang}"
asm_only=0
no_examples=0
quiet=0
while [ "$#" -gt 0 ]; do
case "$1" in
--clang) [ "$#" -ge 2 ] || { echo "Error: --clang needs a path" >&2; exit 2; }; CC="$2"; shift 2 ;;
--asm-only) asm_only=1; no_examples=1; shift ;;
--no-examples) no_examples=1; shift ;;
--quiet) quiet=1; shift ;;
-h|--help) sed -n '17,33p' "$0"; exit 0 ;;
*) echo "Error: unknown option '$1'" >&2; exit 2 ;;
esac
done
say() { [ "$quiet" -eq 1 ] || echo "$@"; }
fail() { echo " FAIL: $*"; }
if ! command -v "$CC" >/dev/null 2>&1 && [ ! -x "$CC" ]; then
echo "Error: compiler '$CC' not found."
echo "Pass --clang <path>, set CLANG, or install Arm Toolchain for Embedded:"
echo " https://github.com/arm/arm-toolchain/releases"
exit 1
fi
# Resolve to an absolute path. The example stage runs the build scripts from
# inside their own directories, so a relative compiler path would stop
# resolving there.
if [ -e "$CC" ]; then
CC="$(realpath "$CC")"
else
CC="$(command -v "$CC")"
fi
say ""
say "Using: $CC"
say " $("$CC" --version | head -1)"
# Each port directory is mapped explicitly to a target triple and CPU. Do not
# replace this with prefix matching: cortex_a5* also matches cortex_a53 and
# cortex_a55, which are AArch64, and assembling those as ARM32 produces a flood
# of misleading errors.
declare -A PORT_TARGET=(
[cortex_m0]="arm-none-eabi cortex-m0 -mthumb"
[cortex_m0+]="arm-none-eabi cortex-m0plus -mthumb"
[cortex_m3]="arm-none-eabi cortex-m3 -mthumb"
[cortex_m4]="arm-none-eabi cortex-m4 -mthumb"
[cortex_m7]="arm-none-eabi cortex-m7 -mthumb"
[cortex_m23]="arm-none-eabi cortex-m23 -mthumb"
[cortex_m33]="arm-none-eabi cortex-m33 -mthumb"
[cortex_m52]="arm-none-eabi cortex-m52 -mthumb -mfloat-abi=hard"
[cortex_m55]="arm-none-eabi cortex-m55 -mthumb -mfloat-abi=hard"
[cortex_m85]="arm-none-eabi cortex-m85 -mthumb -mfloat-abi=hard"
[cortex_a5]="arm-none-eabi cortex-a5"
[cortex_a7]="arm-none-eabi cortex-a7"
[cortex_a8]="arm-none-eabi cortex-a8"
[cortex_a9]="arm-none-eabi cortex-a9"
[cortex_a12]="arm-none-eabi cortex-a12"
[cortex_a15]="arm-none-eabi cortex-a15"
[cortex_a17]="arm-none-eabi cortex-a17"
[cortex_a5_smp]="arm-none-eabi cortex-a5"
[cortex_a7_smp]="arm-none-eabi cortex-a7"
[cortex_a9_smp]="arm-none-eabi cortex-a9"
[cortex_r4]="arm-none-eabi cortex-r4"
[cortex_r5]="arm-none-eabi cortex-r5"
[cortex_r52]="arm-none-eabi cortex-r52"
[cortex_a34]="aarch64-none-elf cortex-a34"
[cortex_a35]="aarch64-none-elf cortex-a35"
[cortex_a53]="aarch64-none-elf cortex-a53"
[cortex_a55]="aarch64-none-elf cortex-a55"
[cortex_a57]="aarch64-none-elf cortex-a57"
[cortex_a65]="aarch64-none-elf cortex-a65"
[cortex_a65ae]="aarch64-none-elf cortex-a65ae"
[cortex_a72]="aarch64-none-elf cortex-a72"
[cortex_a73]="aarch64-none-elf cortex-a73"
[cortex_a75]="aarch64-none-elf cortex-a75"
[cortex_a76]="aarch64-none-elf cortex-a76"
[cortex_a76ae]="aarch64-none-elf cortex-a76ae"
[cortex_a77]="aarch64-none-elf cortex-a77"
[cortex_a34_smp]="aarch64-none-elf cortex-a34"
[cortex_a35_smp]="aarch64-none-elf cortex-a35"
[cortex_a53_smp]="aarch64-none-elf cortex-a53"
[cortex_a55_smp]="aarch64-none-elf cortex-a55"
[cortex_a57_smp]="aarch64-none-elf cortex-a57"
[cortex_a65_smp]="aarch64-none-elf cortex-a65"
[cortex_a65ae_smp]="aarch64-none-elf cortex-a65ae"
[cortex_a72_smp]="aarch64-none-elf cortex-a72"
[cortex_a73_smp]="aarch64-none-elf cortex-a73"
[cortex_a75_smp]="aarch64-none-elf cortex-a75"
[cortex_a76_smp]="aarch64-none-elf cortex-a76"
[cortex_a76ae_smp]="aarch64-none-elf cortex-a76ae"
[cortex_a77_smp]="aarch64-none-elf cortex-a77"
[cortex_a78_smp]="aarch64-none-elf cortex-a78"
)
# Assembly guarded by a feature macro is invisible to the stage above, which
# assembles with default flags and so lets the preprocessor discard every #ifdef
# block before the assembler sees it. These are the macros a user can turn on;
# each file carrying one is assembled again with it defined.
#
# This is not hypothetical. It is where "POP {r0, lr}" was found in the Cortex-M0
# and Cortex-M23 execution-profile paths: invalid on Armv6-M and Armv8-M
# Baseline, where the 16-bit POP takes r0-r7 and pc only, and rejected by GNU as
# well as by LLVM. Turning the feature on had never once been tried.
FEATURE_MACROS="TX_ENABLE_VFP_SUPPORT TX_ENABLE_FIQ_SUPPORT TX_LOW_POWER
TX_ENABLE_EXECUTION_CHANGE_NOTIFY TX_EXECUTION_PROFILE_ENABLE"
# TX_ENABLE_IRQ_NESTING and TX_ENABLE_FIQ_NESTING are deliberately not here.
# They guard no assembly in the trees this script walks: the nesting start and end
# routines are separate files compiled unconditionally, and the macros only feed
# the TX_PORT_SPECIFIC_BUILD_OPTIONS bitfield in tx_port.h. Adding them would
# assemble nothing new and imply coverage that does not exist.
# Extra flags for the VFP paths, per core, needed only where -mcpu alone cannot
# assemble them. Cortex-R4's FPU is an option rather than part of the core, so
# both toolchains reject its VFP code without an -mfpu.
#
# Do not extend this to the A profile ports. They save D16-D31, which exists only
# on a 32-register FPU, so naming a -d16 FPU takes those registers away and turns
# 28 working files into "register expected". Their defaults are already correct.
declare -A VFP_EXTRA=(
[cortex_r4]="-mfpu=vfpv3-d16 -mfloat-abi=softfp"
)
# One core per architecture profile for the C sources. Compiling all of them
# for every core would multiply the run time without adding coverage, since the
# port headers differ by profile rather than by core.
#
# cortex_r52 earns a slot of its own next to cortex_r5 because Armv8-R AArch32
# is a separate profile rather than a variant of Armv7-R. That port is written
# by hand instead of generated from ports_arch, and its tx_port.h differs
# accordingly, so cortex_r5 does not stand in for it.
C_CORES="cortex_m0 cortex_m4 cortex_m23 cortex_m33 cortex_m55 cortex_a7 cortex_a53 cortex_r5 cortex_r52"
# Example builds driven by CMake rather than by a build_threadx.sh pair. These
# are covered by their own stage below, so the script-driven loop passes over
# them without reporting them as a gap.
CMAKE_EXAMPLE_CORES="cortex_r52"
# Example builds that are not expected to link, with the reason. Named by
# their port directory, which covers both ports/ and ports_smp/. Listed
# explicitly rather than silently skipped, so the gaps stay visible.
#
# These fail with the GNU toolchain too, so they are not LLVM problems. All four
# fail the same way, for the same reason:
#
# their linker scripts define the .init and .fini sections but not the _init
# and _fini symbols. Those come from crti.o and crtn.o, which -nostartfiles
# leaves out, so newlib's fini.c cannot resolve them and the link ends with
# "undefined reference to `_fini'". Reproduced with arm-none-eabi-gcc 13.2.1.
#
# Until 6.1.10 the four linked libc.a and libgcc.a checked in beside them, which
# supplied those symbols. That sweep removed the archives without updating the
# link lines, so for years the examples failed earlier still, on the missing
# files themselves. Fixing the link lines exposed the _fini gap underneath.
EXAMPLES_EXPECTED_TO_FAIL="arm9 arm11 cortex_r4 cortex_r5"
failures=0
skipped=""
# --------------------------------------------------------------------------
say ""
say "== Assembly sources of every Arm gnu port =="
total=0
# The module ports keep their assembly in module_manager/src, not src. This
# glob read ports_module/*/gnu/src until 26 Aug 2026; that directory does not
# exist, the [ -d ] guard below skipped it in silence, and 116 files across
# nine Arm module ports were assembled by no check with either compiler. The
# count went from 724 to 840 when the path was corrected, and three of the new
# files did not assemble.
for dir in ports/*/gnu/src ports_smp/*/gnu/src ports_module/*/gnu/module_manager/src; do
[ -d "$dir" ] || continue
core="$(echo "$dir" | cut -d/ -f2)"
spec="${PORT_TARGET[$core]:-}"
if [ -z "$spec" ]; then
skipped="$skipped $core"
continue
fi
# shellcheck disable=SC2086
set -- $spec
target="$1"; cpu="$2"; shift 2; extra="$*"
for src in "$dir"/*.S "$dir"/*.s; do
[ -f "$src" ] || continue
total=$((total + 1))
output="$("$CC" --target="$target" -mcpu="$cpu" $extra -c "$src" -o /dev/null 2>&1)"
if [ -n "$output" ]; then
fail "$src"
echo "$output" | sed 's/^/ /'
failures=$((failures + 1))
fi
done
done
say " $((total - failures)) of $total assembled"
if [ -n "$skipped" ]; then
say " not Arm, skipped:$(echo $skipped | tr ' ' '\n' | sort -u | tr '\n' ' ')"
fi
# --------------------------------------------------------------------------
say ""
say "== Assembly behind feature macros =="
for macro in $FEATURE_MACROS; do
macro_total=0
macro_bad=0
# The module ports are named here for the same reason as in the stage
# above: they were absent from this list until 26 Aug 2026 and so read as
# covered. Adding them found the Cortex-M23 module manager carrying the
# very POP {r0, lr} this comment describes, six months after the same fix
# landed in its non-module sibling.
for src in $(grep -rl "$macro" ports/*/gnu/src/*.S ports_smp/*/gnu/src/*.S \
ports_module/*/gnu/module_manager/src/*.S \
2>/dev/null | sort); do
core="$(echo "$src" | cut -d/ -f2)"
spec="${PORT_TARGET[$core]:-}"
[ -n "$spec" ] || continue
# shellcheck disable=SC2086
set -- $spec
target="$1"; cpu="$2"; shift 2; extra="$*"
# The FPU flags apply to the VFP paths only; the other macros guard no
# floating-point code and do not need them.
fpu=""
if [ "$macro" = "TX_ENABLE_VFP_SUPPORT" ]; then
fpu="${VFP_EXTRA[$core]:-}"
fi
macro_total=$((macro_total + 1))
output="$("$CC" --target="$target" -mcpu="$cpu" $extra $fpu \
-D"$macro" -c "$src" -o /dev/null 2>&1)"
if [ -n "$output" ]; then
fail "$src with -D$macro"
echo "$output" | grep "error:" | head -3 | sed 's/^/ /'
macro_bad=$((macro_bad + 1))
failures=$((failures + 1))
fi
done
if [ "$macro_total" -eq 0 ]; then
say " $macro: no assembly is guarded by it"
else
say " $macro: $((macro_total - macro_bad)) of $macro_total assembled"
fi
done
# --------------------------------------------------------------------------
if [ "$asm_only" -eq 0 ]; then
say ""
say "== Common C sources, one core per architecture profile =="
for core in $C_CORES; do
spec="${PORT_TARGET[$core]:-}"
[ -n "$spec" ] || continue
# shellcheck disable=SC2086
set -- $spec
target="$1"; cpu="$2"; shift 2; extra="$*"
count=0; bad=0
for src in common/src/*.c; do
count=$((count + 1))
output="$("$CC" --target="$target" -mcpu="$cpu" $extra \
-Iports/"$core"/gnu/inc -Icommon/inc -c "$src" -o /dev/null 2>&1)"
if [ -n "$output" ]; then
fail "$core: $src"
# Show the error lines when there are any, and otherwise
# whatever the compiler did say -- a FAIL with nothing under it
# sends the reader off to reproduce the command by hand.
if echo "$output" | grep -q "error:"; then
echo "$output" | grep "error:" | head -3 | sed 's/^/ /'
else
echo "$output" | head -3 | sed 's/^/ /'
fi
bad=$((bad + 1)); failures=$((failures + 1))
fi
done
say " $core: $((count - bad)) of $count compiled"
done
fi
# --------------------------------------------------------------------------
if [ "$asm_only" -eq 0 ]; then
say ""
say "== Module manager C sources, one per Arm module port =="
# Correcting the assembly glob above brought the module ports into the count,
# but only their assembly. Their C stayed outside every check: 27 files of
# portable module manager under common_modules, plus the per-port code under
# ports_module/<core>/gnu/module_manager/src. Nothing compiled either one, so
# by this script's own standard they read as covered while being unbuilt.
#
# Each module port ships its own tx_port.h and txm_module_port.h, carrying the
# control-block extensions the dispatch code needs, so a port is compiled
# against its own headers rather than the base port's.
module_skipped=""
for dir in ports_module/*/gnu/module_manager/src; do
[ -d "$dir" ] || continue
core="$(echo "$dir" | cut -d/ -f2)"
spec="${PORT_TARGET[$core]:-}"
if [ -z "$spec" ]; then
module_skipped="$module_skipped $core"
continue
fi
inc="ports_module/$core/gnu/inc"
if [ ! -f "$inc/tx_port.h" ] || [ ! -f "$inc/txm_module_port.h" ]; then
module_skipped="$module_skipped $core(headers)"
continue
fi
# shellcheck disable=SC2086
set -- $spec
target="$1"; cpu="$2"; shift 2; extra="$*"
# An SMP port's control blocks come from common_smp; pairing it with the
# single-core headers hides _tx_thread_smp_protect behind an implicit
# declaration instead of compiling the port that is actually shipped.
case "$core" in
*_smp) kernel_inc="common_smp/inc" ;;
*) kernel_inc="common/inc" ;;
esac
# The TrustZone ports carry cmse_nonsecure_entry, which needs -mcmse to
# be honoured rather than ignored.
port_extra=""
if [ -f "$inc/tx_secure_interface.h" ]; then
port_extra="-mcmse"
fi
count=0; bad=0
for src in common_modules/module_manager/src/*.c "$dir"/*.c; do
[ -f "$src" ] || continue
count=$((count + 1))
# tx_thread_secure_stack.c carries GCC's optimize attribute, which
# clang does not implement and warns about. That is a toolchain
# divergence in a file GCC builds cleanly, so it is waived for that
# file alone -- a stray unknown attribute anywhere else in the port
# must still be reported.
src_extra=""
case "$src" in
*/tx_thread_secure_stack.c) src_extra="-Wno-unknown-attributes" ;;
esac
# A #pragma message is a deliberate notice to callers, not a defect
# in the file that carries it. txm_module_manager_absolute_load.c
# deprecates itself in favour of the extended entry point, and this
# stage compiles it once per port.
output="$("$CC" --target="$target" -mcpu="$cpu" $extra $port_extra \
$src_extra "-Wno-#pragma-messages" \
-I"$inc" -I"$kernel_inc" -Icommon_modules/inc \
-Icommon_modules/module_manager/inc -c "$src" -o /dev/null 2>&1)"
if [ -n "$output" ]; then
fail "$core: $src"
# Show the error lines when there are any, and otherwise
# whatever the compiler did say -- a FAIL with nothing under it
# sends the reader off to reproduce the command by hand.
if echo "$output" | grep -q "error:"; then
echo "$output" | grep "error:" | head -3 | sed 's/^/ /'
else
echo "$output" | head -3 | sed 's/^/ /'
fi
bad=$((bad + 1)); failures=$((failures + 1))
fi
done
say " $core: $((count - bad)) of $count compiled"
done
if [ -n "$module_skipped" ]; then
say " no target mapping, skipped:$module_skipped"
fi
fi
# --------------------------------------------------------------------------
if [ "$no_examples" -eq 0 ]; then
say ""
say "== Example builds, linked with lld =="
example_ok=0
example_total=0
example_known=""
example_nodriver=""
example_nosample=""
for dir in ports/*/gnu/example_build ports_smp/*/gnu/example_build; do
[ -d "$dir" ] || continue
core="$(echo "$dir" | cut -d/ -f2)"
# Anything on the expected-to-fail list is reported before any other
# filter is applied, so a name placed there can never drop out of the
# output. arm9 and arm11 are the cases that matter: they are Arm ports
# with example drivers, but they carry no PORT_TARGET entry, so the
# Arm test below would discard them.
case " $EXAMPLES_EXPECTED_TO_FAIL " in
*" $core "*) example_known="$example_known $core"; continue ;;
esac
# Arm ports only, the same rule the assembly stage applies. Naming
# linux or mips32 as a gap here would be noise, not information.
[ -n "${PORT_TARGET[$core]:-}" ] || continue
# Covered by the CMake stage below rather than here.
case " $CMAKE_EXAMPLE_CORES " in
*" $core "*) continue ;;
esac
# A driverless example is not covered by this stage, so say so rather
# than dropping out in silence. A port that is simply absent from the
# count reads as covered.
if [ ! -f "$dir/build_threadx.sh" ]; then
example_nodriver="$example_nodriver $core"
continue
fi
if [ ! -f "$dir/build_threadx_sample.sh" ]; then
example_nosample="$example_nosample $core"
continue
fi
example_total=$((example_total + 1))
rm -f "$dir"/*.o "$dir"/*.a "$dir"/*.out "$dir"/*.map 2>/dev/null || true
log="$(cd "$dir" && TOOLCHAIN=atfe ATFE_CLANG="$CC" ./build_threadx.sh 2>&1 && \
TOOLCHAIN=atfe ATFE_CLANG="$CC" ./build_threadx_sample.sh 2>&1)" || true
if [ -f "$dir/sample_threadx.out" ]; then
example_ok=$((example_ok + 1))
else
fail "$core: example build produced no image"
# Not filtered on "error": a missing tool reports "command not
# found" or "Permission denied", and filtering hid exactly that.
echo "$log" | tail -6 | sed 's/^/ /'
failures=$((failures + 1))
fi
rm -f "$dir"/*.o "$dir"/*.a "$dir"/*.out "$dir"/*.map 2>/dev/null || true
done
say " $example_ok of $example_total example builds linked"
if [ -n "$example_known" ]; then
say " known not to link, see the list at the top of this script:$example_known"
fi
if [ -n "$example_nosample" ]; then
say " has build_threadx.sh but no build_threadx_sample.sh, so not linked:$example_nosample"
fi
if [ -n "$example_nodriver" ]; then
say " no script driver, so outside this stage:$example_nodriver"
fi
fi
# --------------------------------------------------------------------------
# The Cortex-R52 examples are built by CMake, so they need a toolchain file
# rather than TOOLCHAIN=atfe. Same compiler, same linker, same purpose as the
# stage above: confirm the images still link when the toolchain is not GNU.
if [ "$no_examples" -eq 0 ]; then
say ""
say "== CMake example builds, linked with lld =="
if ! command -v cmake >/dev/null 2>&1 || ! command -v ninja >/dev/null 2>&1; then
say " skipped: cmake and ninja are both required"
else
for core in $CMAKE_EXAMPLE_CORES; do
build_dir="$(mktemp -d)"
# ATFE_TOOLCHAIN_PATH follows --clang, so the stage uses the same
# compiler as every other stage rather than whatever is on PATH.
if cmake -S . -B "$build_dir" -G Ninja \
-DCMAKE_TOOLCHAIN_FILE="cmake/${core}_clang.cmake" \
-DATFE_TOOLCHAIN_PATH="$(cd "$(dirname "$CC")" && pwd)" \
-DTX_R52_BUILD_FVP_EXAMPLE=ON \
-DTX_R52_ENABLE_MPU=ON >"$build_dir/configure.log" 2>&1; then
# Read the image list from the generated graph instead of
# repeating it here, so adding a target cannot silently escape
# this check. The images are EXCLUDE_FROM_ALL, so "ninja" alone
# would build none of them.
#
# The cmake_object_order_depends_target_* entries are CMake's
# own ordering phonies, one per real image and named after it.
# Counting those doubled the total and reported ten images built
# where there are five.
images="$(ninja -C "$build_dir" -t targets all 2>/dev/null \
| grep -oE '^[A-Za-z0-9_]+\.elf' \
| grep -v '^cmake_' | sort -u)"
if [ -z "$images" ]; then
fail "$core: no .elf targets found in the CMake graph"
failures=$((failures + 1))
else
built=0; total=0
for image in $images; do
total=$((total + 1))
if ninja -C "$build_dir" "$image" \
>"$build_dir/$image.log" 2>&1; then
built=$((built + 1))
else
fail "$core: $image did not build"
tail -6 "$build_dir/$image.log" | sed 's/^/ /'
failures=$((failures + 1))
fi
done
say " $core: $built of $total images linked"
fi
else
fail "$core: CMake configure failed"
tail -6 "$build_dir/configure.log" | sed 's/^/ /'
failures=$((failures + 1))
fi
rm -rf "$build_dir"
done
fi
fi
# --------------------------------------------------------------------------
say ""
if [ "$failures" -eq 0 ]; then
say "All LLVM toolchain checks passed."
exit 0
fi
echo "$failures LLVM toolchain check(s) failed."
exit 1
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