diff --git a/tests/scripts/components-platform.sh b/tests/scripts/components-platform.sh
index 3a21870..8987191 100644
--- a/tests/scripts/components-platform.sh
+++ b/tests/scripts/components-platform.sh
@@ -8,3 +8,489 @@
 ################################################################
 #### Platform Testing
 ################################################################
+
+support_test_aesni () {
+    # Check that gcc targets x86_64 (we can build AESNI), and check for
+    # AESNI support on the host (we can run AESNI).
+    #
+    # The name of this function is possibly slightly misleading, but needs to align
+    # with the name of the corresponding test, component_test_aesni.
+    #
+    # In principle 32-bit x86 can support AESNI, but our implementation does not
+    # support 32-bit x86, so we check for x86-64.
+    # We can only grep /proc/cpuinfo on Linux, so this also checks for Linux
+    (gcc -v 2>&1 | grep Target | grep -q x86_64) &&
+        [[ "$HOSTTYPE" == "x86_64" && "$OSTYPE" == "linux-gnu" ]] &&
+        (lscpu | grep -qw aes)
+}
+
+component_test_aesni () { # ~ 60s
+    # This tests the two AESNI implementations (intrinsics and assembly), and also the plain C
+    # fallback. It also tests the logic that is used to select which implementation(s) to build.
+    #
+    # This test does not require the host to have support for AESNI (if it doesn't, the run-time
+    # AESNI detection will fallback to the plain C implementation, so the tests will instead
+    # exercise the plain C impl).
+
+    msg "build: default config with different AES implementations"
+    scripts/config.py set MBEDTLS_AESNI_C
+    scripts/config.py unset MBEDTLS_AES_USE_HARDWARE_ONLY
+    scripts/config.py set MBEDTLS_HAVE_ASM
+
+    # test the intrinsics implementation
+    msg "AES tests, test intrinsics"
+    make clean
+    make CC=gcc CFLAGS='-Werror -Wall -Wextra -mpclmul -msse2 -maes'
+    # check that we built intrinsics - this should be used by default when supported by the compiler
+    ./programs/test/selftest aes | grep "AESNI code" | grep -q "intrinsics"
+
+    # test the asm implementation
+    msg "AES tests, test assembly"
+    make clean
+    make CC=gcc CFLAGS='-Werror -Wall -Wextra -mno-pclmul -mno-sse2 -mno-aes'
+    # check that we built assembly - this should be built if the compiler does not support intrinsics
+    ./programs/test/selftest aes | grep "AESNI code" | grep -q "assembly"
+
+    # test the plain C implementation
+    scripts/config.py unset MBEDTLS_AESNI_C
+    scripts/config.py unset MBEDTLS_AES_USE_HARDWARE_ONLY
+    msg "AES tests, plain C"
+    make clean
+    make CC=gcc CFLAGS='-O2 -Werror'
+    # check that there is no AESNI code present
+    ./programs/test/selftest aes | not grep -q "AESNI code"
+    not grep -q "AES note: using AESNI" ./programs/test/selftest
+    grep -q "AES note: built-in implementation." ./programs/test/selftest
+
+    # test the intrinsics implementation
+    scripts/config.py set MBEDTLS_AESNI_C
+    scripts/config.py set MBEDTLS_AES_USE_HARDWARE_ONLY
+    msg "AES tests, test AESNI only"
+    make clean
+    make CC=gcc CFLAGS='-Werror -Wall -Wextra -mpclmul -msse2 -maes'
+    ./programs/test/selftest aes | grep -q "AES note: using AESNI"
+    ./programs/test/selftest aes | not grep -q "AES note: built-in implementation."
+    grep -q "AES note: using AESNI" ./programs/test/selftest
+    not grep -q "AES note: built-in implementation." ./programs/test/selftest
+}
+
+support_test_aesni_m32 () {
+    support_test_m32_no_asm && (lscpu | grep -qw aes)
+}
+
+component_test_aesni_m32 () { # ~ 60s
+    # This tests are duplicated from component_test_aesni for i386 target
+    #
+    # AESNI intrinsic code supports i386 and assembly code does not support it.
+
+    msg "build: default config with different AES implementations"
+    scripts/config.py set MBEDTLS_AESNI_C
+    scripts/config.py set MBEDTLS_PADLOCK_C
+    scripts/config.py unset MBEDTLS_AES_USE_HARDWARE_ONLY
+    scripts/config.py set MBEDTLS_HAVE_ASM
+
+    # test the intrinsics implementation with gcc
+    msg "AES tests, test intrinsics (gcc)"
+    make clean
+    make CC=gcc CFLAGS='-m32 -Werror -Wall -Wextra' LDFLAGS='-m32'
+    # check that we built intrinsics - this should be used by default when supported by the compiler
+    ./programs/test/selftest aes | grep "AESNI code" | grep -q "intrinsics"
+    grep -q "AES note: using AESNI" ./programs/test/selftest
+    grep -q "AES note: built-in implementation." ./programs/test/selftest
+    grep -q "AES note: using VIA Padlock" ./programs/test/selftest
+    grep -q mbedtls_aesni_has_support ./programs/test/selftest
+
+    scripts/config.py set MBEDTLS_AESNI_C
+    scripts/config.py unset MBEDTLS_PADLOCK_C
+    scripts/config.py set MBEDTLS_AES_USE_HARDWARE_ONLY
+    msg "AES tests, test AESNI only"
+    make clean
+    make CC=gcc CFLAGS='-m32 -Werror -Wall -Wextra -mpclmul -msse2 -maes' LDFLAGS='-m32'
+    ./programs/test/selftest aes | grep -q "AES note: using AESNI"
+    ./programs/test/selftest aes | not grep -q "AES note: built-in implementation."
+    grep -q "AES note: using AESNI" ./programs/test/selftest
+    not grep -q "AES note: built-in implementation." ./programs/test/selftest
+    not grep -q "AES note: using VIA Padlock" ./programs/test/selftest
+    not grep -q mbedtls_aesni_has_support ./programs/test/selftest
+}
+
+support_test_aesni_m32_clang () {
+    # clang >= 4 is required to build with target attributes
+    support_test_aesni_m32 && [[ $(clang_version) -ge 4 ]]
+}
+
+component_test_aesni_m32_clang () {
+
+    scripts/config.py set MBEDTLS_AESNI_C
+    scripts/config.py set MBEDTLS_PADLOCK_C
+    scripts/config.py unset MBEDTLS_AES_USE_HARDWARE_ONLY
+    scripts/config.py set MBEDTLS_HAVE_ASM
+
+    # test the intrinsics implementation with clang
+    msg "AES tests, test intrinsics (clang)"
+    make clean
+    make CC=clang CFLAGS='-m32 -Werror -Wall -Wextra' LDFLAGS='-m32'
+    # check that we built intrinsics - this should be used by default when supported by the compiler
+    ./programs/test/selftest aes | grep "AESNI code" | grep -q "intrinsics"
+    grep -q "AES note: using AESNI" ./programs/test/selftest
+    grep -q "AES note: built-in implementation." ./programs/test/selftest
+    grep -q "AES note: using VIA Padlock" ./programs/test/selftest
+    grep -q mbedtls_aesni_has_support ./programs/test/selftest
+}
+
+support_build_aes_armce () {
+    # clang >= 11 is required to build with AES extensions
+    [[ $(clang_version) -ge 11 ]]
+}
+
+component_build_aes_armce () {
+    # Test variations of AES with Armv8 crypto extensions
+    scripts/config.py set MBEDTLS_AESCE_C
+    scripts/config.py set MBEDTLS_AES_USE_HARDWARE_ONLY
+
+    msg "MBEDTLS_AES_USE_HARDWARE_ONLY, clang, aarch64"
+    make -B library/aesce.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a+crypto"
+
+    msg "MBEDTLS_AES_USE_HARDWARE_ONLY, clang, arm"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm"
+
+    msg "MBEDTLS_AES_USE_HARDWARE_ONLY, clang, thumb"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb"
+
+    scripts/config.py unset MBEDTLS_AES_USE_HARDWARE_ONLY
+
+    msg "no MBEDTLS_AES_USE_HARDWARE_ONLY, clang, aarch64"
+    make -B library/aesce.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a+crypto"
+
+    msg "no MBEDTLS_AES_USE_HARDWARE_ONLY, clang, arm"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm"
+
+    msg "no MBEDTLS_AES_USE_HARDWARE_ONLY, clang, thumb"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb"
+
+    # test for presence of AES instructions
+    scripts/config.py set MBEDTLS_AES_USE_HARDWARE_ONLY
+    msg "clang, test A32 crypto instructions built"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm -S"
+    grep -E 'aes[0-9a-z]+.[0-9]\s*[qv]' library/aesce.o
+    msg "clang, test T32 crypto instructions built"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb -S"
+    grep -E 'aes[0-9a-z]+.[0-9]\s*[qv]' library/aesce.o
+    msg "clang, test aarch64 crypto instructions built"
+    make -B library/aesce.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a -S"
+    grep -E 'aes[a-z]+\s*[qv]' library/aesce.o
+
+    # test for absence of AES instructions
+    scripts/config.py unset MBEDTLS_AES_USE_HARDWARE_ONLY
+    scripts/config.py unset MBEDTLS_AESCE_C
+    msg "clang, test A32 crypto instructions not built"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm -S"
+    not grep -E 'aes[0-9a-z]+.[0-9]\s*[qv]' library/aesce.o
+    msg "clang, test T32 crypto instructions not built"
+    make -B library/aesce.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb -S"
+    not grep -E 'aes[0-9a-z]+.[0-9]\s*[qv]' library/aesce.o
+    msg "clang, test aarch64 crypto instructions not built"
+    make -B library/aesce.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a -S"
+    not grep -E 'aes[a-z]+\s*[qv]' library/aesce.o
+}
+
+support_build_sha_armce () {
+    # clang >= 4 is required to build with SHA extensions
+    [[ $(clang_version) -ge 4 ]]
+}
+
+component_build_sha_armce () {
+    scripts/config.py unset MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT
+
+
+    # Test variations of SHA256 Armv8 crypto extensions
+    scripts/config.py set MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY
+        msg "MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY clang, aarch64"
+        make -B library/sha256.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a"
+        msg "MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY clang, arm"
+        make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm"
+    scripts/config.py unset MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY
+
+
+    # test the deprecated form of the config option
+    scripts/config.py set MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY
+        msg "MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY clang, thumb"
+        make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb"
+    scripts/config.py unset MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY
+
+    scripts/config.py set MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT
+        msg "MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT clang, aarch64"
+        make -B library/sha256.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a"
+    scripts/config.py unset MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT
+
+
+    # test the deprecated form of the config option
+    scripts/config.py set MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT
+        msg "MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT clang, arm"
+        make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm -std=c99"
+        msg "MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT clang, thumb"
+        make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb"
+    scripts/config.py unset MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT
+
+
+    # examine the disassembly for presence of SHA instructions
+    for opt in MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT; do
+        scripts/config.py set ${opt}
+            msg "${opt} clang, test A32 crypto instructions built"
+            make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm -S"
+            grep -E 'sha256[a-z0-9]+.32\s+[qv]' library/sha256.o
+
+            msg "${opt} clang, test T32 crypto instructions built"
+            make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb -S"
+            grep -E 'sha256[a-z0-9]+.32\s+[qv]' library/sha256.o
+
+            msg "${opt} clang, test aarch64 crypto instructions built"
+            make -B library/sha256.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a -S"
+            grep -E 'sha256[a-z0-9]+\s+[qv]' library/sha256.o
+        scripts/config.py unset ${opt}
+    done
+
+
+    # examine the disassembly for absence of SHA instructions
+    msg "clang, test A32 crypto instructions not built"
+    make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a72+crypto -marm -S"
+    not grep -E 'sha256[a-z0-9]+.32\s+[qv]' library/sha256.o
+
+    msg "clang, test T32 crypto instructions not built"
+    make -B library/sha256.o CC=clang CFLAGS="--target=arm-linux-gnueabihf -mcpu=cortex-a32+crypto -mthumb -S"
+    not grep -E 'sha256[a-z0-9]+.32\s+[qv]' library/sha256.o
+
+    msg "clang, test aarch64 crypto instructions not built"
+    make -B library/sha256.o CC=clang CFLAGS="--target=aarch64-linux-gnu -march=armv8-a -S"
+    not grep -E 'sha256[a-z0-9]+\s+[qv]' library/sha256.o
+}
+
+component_test_m32_no_asm () {
+    # Build without assembly, so as to use portable C code (in a 32-bit
+    # build) and not the i386-specific inline assembly.
+    #
+    # Note that we require gcc, because clang Asan builds fail to link for
+    # this target (cannot find libclang_rt.lsan-i386.a - this is a known clang issue).
+    msg "build: i386, make, gcc, no asm (ASan build)" # ~ 30s
+    scripts/config.py full
+    scripts/config.py unset MBEDTLS_HAVE_ASM
+    scripts/config.py unset MBEDTLS_PADLOCK_C
+    scripts/config.py unset MBEDTLS_AESNI_C # AESNI for 32-bit is tested in test_aesni_m32
+    make CC=gcc CFLAGS="$ASAN_CFLAGS -m32" LDFLAGS="-m32 $ASAN_CFLAGS"
+
+    msg "test: i386, make, gcc, no asm (ASan build)"
+    make test
+}
+
+support_test_m32_no_asm () {
+    case $(uname -m) in
+        amd64|x86_64) true;;
+        *) false;;
+    esac
+}
+
+component_test_m32_o2 () {
+    # Build with optimization, to use the i386 specific inline assembly
+    # and go faster for tests.
+    msg "build: i386, make, gcc -O2 (ASan build)" # ~ 30s
+    scripts/config.py full
+    scripts/config.py unset MBEDTLS_AESNI_C # AESNI for 32-bit is tested in test_aesni_m32
+    make CC=gcc CFLAGS="$ASAN_CFLAGS -m32" LDFLAGS="-m32 $ASAN_CFLAGS"
+
+    msg "test: i386, make, gcc -O2 (ASan build)"
+    make test
+
+    msg "test ssl-opt.sh, i386, make, gcc-O2"
+    tests/ssl-opt.sh
+}
+
+support_test_m32_o2 () {
+    support_test_m32_no_asm "$@"
+}
+
+component_test_m32_everest () {
+    msg "build: i386, Everest ECDH context (ASan build)" # ~ 6 min
+    scripts/config.py set MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
+    scripts/config.py unset MBEDTLS_AESNI_C # AESNI for 32-bit is tested in test_aesni_m32
+    make CC=gcc CFLAGS="$ASAN_CFLAGS -m32" LDFLAGS="-m32 $ASAN_CFLAGS"
+
+    msg "test: i386, Everest ECDH context - main suites (inc. selftests) (ASan build)" # ~ 50s
+    make test
+
+    msg "test: i386, Everest ECDH context - ECDH-related part of ssl-opt.sh (ASan build)" # ~ 5s
+    tests/ssl-opt.sh -f ECDH
+
+    msg "test: i386, Everest ECDH context - compat.sh with some ECDH ciphersuites (ASan build)" # ~ 3 min
+    # Exclude some symmetric ciphers that are redundant here to gain time.
+    tests/compat.sh -f ECDH -V NO -e 'ARIA\|CAMELLIA\|CHACHA'
+}
+
+support_test_m32_everest () {
+    support_test_m32_no_asm "$@"
+}
+
+component_test_mx32 () {
+    msg "build: 64-bit ILP32, make, gcc" # ~ 30s
+    scripts/config.py full
+    make CC=gcc CFLAGS='-O2 -Werror -Wall -Wextra -mx32' LDFLAGS='-mx32'
+
+    msg "test: 64-bit ILP32, make, gcc"
+    make test
+}
+
+support_test_mx32 () {
+    case $(uname -m) in
+        amd64|x86_64) true;;
+        *) false;;
+    esac
+}
+
+component_build_arm_none_eabi_gcc () {
+    msg "build: ${ARM_NONE_EABI_GCC_PREFIX}gcc -O1, baremetal+debug" # ~ 10s
+    scripts/config.py baremetal
+    make CC="${ARM_NONE_EABI_GCC_PREFIX}gcc" AR="${ARM_NONE_EABI_GCC_PREFIX}ar" LD="${ARM_NONE_EABI_GCC_PREFIX}ld" CFLAGS='-std=c99 -Werror -Wall -Wextra -O1' lib
+
+    msg "size: ${ARM_NONE_EABI_GCC_PREFIX}gcc -O1, baremetal+debug"
+    ${ARM_NONE_EABI_GCC_PREFIX}size -t library/*.o
+}
+
+component_build_arm_linux_gnueabi_gcc_arm5vte () {
+    msg "build: ${ARM_LINUX_GNUEABI_GCC_PREFIX}gcc -march=arm5vte, baremetal+debug" # ~ 10s
+    scripts/config.py baremetal
+    # Build for a target platform that's close to what Debian uses
+    # for its "armel" distribution (https://wiki.debian.org/ArmEabiPort).
+    # See https://github.com/Mbed-TLS/mbedtls/pull/2169 and comments.
+    # Build everything including programs, see for example
+    # https://github.com/Mbed-TLS/mbedtls/pull/3449#issuecomment-675313720
+    make CC="${ARM_LINUX_GNUEABI_GCC_PREFIX}gcc" AR="${ARM_LINUX_GNUEABI_GCC_PREFIX}ar" CFLAGS='-Werror -Wall -Wextra -march=armv5te -O1' LDFLAGS='-march=armv5te'
+
+    msg "size: ${ARM_LINUX_GNUEABI_GCC_PREFIX}gcc -march=armv5te -O1, baremetal+debug"
+    ${ARM_LINUX_GNUEABI_GCC_PREFIX}size -t library/*.o
+}
+
+support_build_arm_linux_gnueabi_gcc_arm5vte () {
+    type ${ARM_LINUX_GNUEABI_GCC_PREFIX}gcc >/dev/null 2>&1
+}
+
+component_build_arm_none_eabi_gcc_arm5vte () {
+    msg "build: ${ARM_NONE_EABI_GCC_PREFIX}gcc -march=arm5vte, baremetal+debug" # ~ 10s
+    scripts/config.py baremetal
+    # This is an imperfect substitute for
+    # component_build_arm_linux_gnueabi_gcc_arm5vte
+    # in case the gcc-arm-linux-gnueabi toolchain is not available
+    make CC="${ARM_NONE_EABI_GCC_PREFIX}gcc" AR="${ARM_NONE_EABI_GCC_PREFIX}ar" CFLAGS='-std=c99 -Werror -Wall -Wextra -march=armv5te -O1' LDFLAGS='-march=armv5te' SHELL='sh -x' lib
+
+    msg "size: ${ARM_NONE_EABI_GCC_PREFIX}gcc -march=armv5te -O1, baremetal+debug"
+    ${ARM_NONE_EABI_GCC_PREFIX}size -t library/*.o
+}
+
+component_build_arm_none_eabi_gcc_m0plus () {
+    msg "build: ${ARM_NONE_EABI_GCC_PREFIX}gcc -mthumb -mcpu=cortex-m0plus, baremetal_size" # ~ 10s
+    scripts/config.py baremetal_size
+    make CC="${ARM_NONE_EABI_GCC_PREFIX}gcc" AR="${ARM_NONE_EABI_GCC_PREFIX}ar" LD="${ARM_NONE_EABI_GCC_PREFIX}ld" CFLAGS='-std=c99 -Werror -Wall -Wextra -mthumb -mcpu=cortex-m0plus -Os' lib
+
+    msg "size: ${ARM_NONE_EABI_GCC_PREFIX}gcc -mthumb -mcpu=cortex-m0plus -Os, baremetal_size"
+    ${ARM_NONE_EABI_GCC_PREFIX}size -t library/*.o
+    for lib in library/*.a; do
+        echo "$lib:"
+        ${ARM_NONE_EABI_GCC_PREFIX}size -t $lib | grep TOTALS
+    done
+}
+
+component_build_arm_none_eabi_gcc_no_udbl_division () {
+    msg "build: ${ARM_NONE_EABI_GCC_PREFIX}gcc -DMBEDTLS_NO_UDBL_DIVISION, make" # ~ 10s
+    scripts/config.py baremetal
+    scripts/config.py set MBEDTLS_NO_UDBL_DIVISION
+    make CC="${ARM_NONE_EABI_GCC_PREFIX}gcc" AR="${ARM_NONE_EABI_GCC_PREFIX}ar" LD="${ARM_NONE_EABI_GCC_PREFIX}ld" CFLAGS='-std=c99 -Werror -Wall -Wextra' lib
+    echo "Checking that software 64-bit division is not required"
+    not grep __aeabi_uldiv library/*.o
+}
+
+component_build_arm_none_eabi_gcc_no_64bit_multiplication () {
+    msg "build: ${ARM_NONE_EABI_GCC_PREFIX}gcc MBEDTLS_NO_64BIT_MULTIPLICATION, make" # ~ 10s
+    scripts/config.py baremetal
+    scripts/config.py set MBEDTLS_NO_64BIT_MULTIPLICATION
+    make CC="${ARM_NONE_EABI_GCC_PREFIX}gcc" AR="${ARM_NONE_EABI_GCC_PREFIX}ar" LD="${ARM_NONE_EABI_GCC_PREFIX}ld" CFLAGS='-std=c99 -Werror -O1 -march=armv6-m -mthumb' lib
+    echo "Checking that software 64-bit multiplication is not required"
+    not grep __aeabi_lmul library/*.o
+}
+
+component_build_arm_clang_thumb () {
+    # ~ 30s
+
+    scripts/config.py baremetal
+
+    msg "build: clang thumb 2, make"
+    make clean
+    make CC="clang" CFLAGS='-std=c99 -Werror -Os --target=arm-linux-gnueabihf -march=armv7-m -mthumb' lib
+
+    # Some Thumb 1 asm is sensitive to optimisation level, so test both -O0 and -Os
+    msg "build: clang thumb 1 -O0, make"
+    make clean
+    make CC="clang" CFLAGS='-std=c99 -Werror -O0 --target=arm-linux-gnueabihf -mcpu=arm1136j-s -mthumb' lib
+
+    msg "build: clang thumb 1 -Os, make"
+    make clean
+    make CC="clang" CFLAGS='-std=c99 -Werror -Os --target=arm-linux-gnueabihf -mcpu=arm1136j-s -mthumb' lib
+}
+
+component_build_armcc () {
+    msg "build: ARM Compiler 5"
+    scripts/config.py baremetal
+    # armc[56] don't support SHA-512 intrinsics
+    scripts/config.py unset MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
+
+    # older versions of armcc/armclang don't support AESCE_C on 32-bit Arm
+    scripts/config.py unset MBEDTLS_AESCE_C
+
+    # Stop armclang warning about feature detection for A64_CRYPTO.
+    # With this enabled, the library does build correctly under armclang,
+    # but in baremetal builds (as tested here), feature detection is
+    # unavailable, and the user is notified via a #warning. So enabling
+    # this feature would prevent us from building with -Werror on
+    # armclang. Tracked in #7198.
+    scripts/config.py unset MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT
+
+    scripts/config.py set MBEDTLS_HAVE_ASM
+
+    make CC="$ARMC5_CC" AR="$ARMC5_AR" WARNING_CFLAGS='--strict --c99' lib
+
+    msg "size: ARM Compiler 5"
+    "$ARMC5_FROMELF" -z library/*.o
+
+    # Compile mostly with -O1 since some Arm inline assembly is disabled for -O0.
+
+    # ARM Compiler 6 - Target ARMv7-A
+    armc6_build_test "-O1 --target=arm-arm-none-eabi -march=armv7-a"
+
+    # ARM Compiler 6 - Target ARMv7-M
+    armc6_build_test "-O1 --target=arm-arm-none-eabi -march=armv7-m"
+
+    # ARM Compiler 6 - Target ARMv7-M+DSP
+    armc6_build_test "-O1 --target=arm-arm-none-eabi -march=armv7-m+dsp"
+
+    # ARM Compiler 6 - Target ARMv8-A - AArch32
+    armc6_build_test "-O1 --target=arm-arm-none-eabi -march=armv8.2-a"
+
+    # ARM Compiler 6 - Target ARMv8-M
+    armc6_build_test "-O1 --target=arm-arm-none-eabi -march=armv8-m.main"
+
+    # ARM Compiler 6 - Target Cortex-M0 - no optimisation
+    armc6_build_test "-O0 --target=arm-arm-none-eabi -mcpu=cortex-m0"
+
+    # ARM Compiler 6 - Target Cortex-M0
+    armc6_build_test "-Os --target=arm-arm-none-eabi -mcpu=cortex-m0"
+
+    # ARM Compiler 6 - Target ARMv8.2-A - AArch64
+    #
+    # Re-enable MBEDTLS_AESCE_C as this should be supported by the version of armclang
+    # that we have in our CI
+    scripts/config.py set MBEDTLS_AESCE_C
+    armc6_build_test "-O1 --target=aarch64-arm-none-eabi -march=armv8.2-a+crypto"
+}
+
+support_build_armcc () {
+    armc5_cc="$ARMC5_BIN_DIR/armcc"
+    armc6_cc="$ARMC6_BIN_DIR/armclang"
+    (check_tools "$armc5_cc" "$armc6_cc" > /dev/null 2>&1)
+}