Fix - AArch64 Big Endian Intrinsics

ci/docker/aarch64-unknown-linux-gnu/Dockerfile

@@ -10,7 +10,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   qemu-user \
   make \
   file \
-  clang-15 \
+  clang-19 \
   lld
 
 ENV CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc \

ci/docker/aarch64_be-unknown-linux-gnu/Dockerfile

@@ -0,0 +1,29 @@
+FROM ubuntu:24.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  gcc \
+  g++ \
+  ca-certificates \
+  libc6-dev \
+  libc6-dev-arm64-cross \
+  qemu-user \
+  make \
+  file \
+  clang-19 \
+  curl \
+  xz-utils \
+  lld
+
+ENV TOOLCHAIN="arm-gnu-toolchain-14.2.rel1-x86_64-aarch64_be-none-linux-gnu"
+
+# Download the aarch64_be gcc toolchain
+RUN curl -L "https://developer.arm.com/-/media/Files/downloads/gnu/14.2.rel1/binrel/${TOOLCHAIN}.tar.xz" -o "${TOOLCHAIN}.tar.xz"
+RUN tar -xvf "${TOOLCHAIN}.tar.xz"
+RUN mkdir /toolchains && mv "./${TOOLCHAIN}" /toolchains
+
+ENV AARCH64_BE_TOOLCHAIN="/toolchains/${TOOLCHAIN}"
+ENV AARCH64_BE_LIBC="${AARCH64_BE_TOOLCHAIN}/aarch64_be-none-linux-gnu/libc"
+
+ENV CARGO_TARGET_AARCH64_BE_UNKNOWN_LINUX_GNU_LINKER="${AARCH64_BE_TOOLCHAIN}/bin/aarch64_be-none-linux-gnu-gcc"
+ENV CARGO_TARGET_AARCH64_BE_UNKNOWN_LINUX_GNU_RUNNER="qemu-aarch64_be -L ${AARCH64_BE_LIBC}"
+ENV OBJDUMP="${AARCH64_BE_TOOLCHAIN}/bin/bin/aarch64-none-linux-gnu-objdump"

ci/docker/armv7-unknown-linux-gnueabihf/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 RUN apt-get update && apt-get install -y --no-install-recommends \
   gcc \
   g++ \
@@ -10,7 +10,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   qemu-user \
   make \
   file \
-  clang-15 \
+  clang-19 \
   lld
 ENV CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc \
     CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_RUNNER="qemu-arm -L /usr/arm-linux-gnueabihf" \

ci/run.sh

@@ -108,6 +108,7 @@ if [ "$NOSTD" != "1" ]; then
     cargo_test "${STDARCH_EXAMPLES} ${PROFILE}"
 fi
 
+
 # Test targets compiled with extra features.
 case ${TARGET} in
     x86*)
@@ -134,26 +135,60 @@ case ${TARGET} in
         export RUSTFLAGS="${OLD_RUSTFLAGS} -C target-feature=+vsx"
         cargo_test "${PROFILE}"
         ;;
+
+    # Setup aarch64 & armv7 specific variables, the runner, along with some 
+    # tests to skip
+    aarch64-unknown-linux-gnu*)
+        TEST_CPPFLAGS="-fuse-ld=lld -I/usr/aarch64-linux-gnu/include/ -I/usr/aarch64-linux-gnu/include/c++/9/aarch64-linux-gnu/"
+        TEST_SKIP_INTRINSICS=crates/intrinsic-test/missing_aarch64.txt
+        TEST_CXX_COMPILER="clang++-19"
+        TEST_RUNNER="${CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUNNER}"
+        ;;
+
+    aarch64_be-unknown-linux-gnu*)
+        TEST_CPPFLAGS="-fuse-ld=lld"
+        TEST_SKIP_INTRINSICS=crates/intrinsic-test/missing_aarch64.txt
+        TEST_CXX_COMPILER="clang++-19"
+        TEST_RUNNER="${CARGO_TARGET_AARCH64_BE_UNKNOWN_LINUX_GNU_RUNNER}"
+        ;;
+
+    armv7-unknown-linux-gnueabihf*)
+        TEST_CPPFLAGS="-fuse-ld=lld -I/usr/arm-linux-gnueabihf/include/ -I/usr/arm-linux-gnueabihf/include/c++/9/arm-linux-gnueabihf/"
+        TEST_SKIP_INTRINSICS=crates/intrinsic-test/missing_arm.txt
+        TEST_CXX_COMPILER="clang++-19"
+        TEST_RUNNER="${CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_RUNNER}"
+        ;;
     *)
         ;;
 
 esac
 
-if [ "${TARGET}" = "aarch64-unknown-linux-gnu" ]; then
-    (
-        CPPFLAGS="-fuse-ld=lld -I/usr/aarch64-linux-gnu/include/ -I/usr/aarch64-linux-gnu/include/c++/9/aarch64-linux-gnu/" \
-            RUSTFLAGS="$HOST_RUSTFLAGS" \
-            RUST_LOG=warn \
-            cargo run ${INTRINSIC_TEST} "${PROFILE}" --bin intrinsic-test -- intrinsics_data/arm_intrinsics.json --runner "${CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUNNER}" --cppcompiler "clang++-15" --skip crates/intrinsic-test/missing_aarch64.txt
-    )
-elif [ "${TARGET}" = "armv7-unknown-linux-gnueabihf" ]; then
-    (
-        CPPFLAGS="-fuse-ld=lld -I/usr/arm-linux-gnueabihf/include/ -I/usr/arm-linux-gnueabihf/include/c++/9/arm-linux-gnueabihf/" \
-            RUSTFLAGS="$HOST_RUSTFLAGS" \
-            RUST_LOG=warn \
-            cargo run ${INTRINSIC_TEST} "${PROFILE}" --bin intrinsic-test -- intrinsics_data/arm_intrinsics.json --runner "${CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_RUNNER}" --cppcompiler "clang++-15" --skip crates/intrinsic-test/missing_arm.txt --a32
-    )
-fi
+# Arm specific
+case "${TARGET}" in
+    aarch64-unknown-linux-gnu*|armv7-unknown-linux-gnueabihf*)
+        CPPFLAGS="${TEST_CPPFLAGS}" RUSTFLAGS="${HOST_RUSTFLAGS}" RUST_LOG=warn \
+            cargo run "${INTRINSIC_TEST}" "${PROFILE}" \
+            --bin intrinsic-test -- intrinsics_data/arm_intrinsics.json \
+            --runner "${TEST_RUNNER}" \
+            --cppcompiler "${TEST_CXX_COMPILER}" \
+            --skip "${TEST_SKIP_INTRINSICS}" \
+            --target "${TARGET}"
+        ;;
+
+    aarch64_be-unknown-linux-gnu*)
+        CPPFLAGS="${TEST_CPPFLAGS}" RUSTFLAGS="${HOST_RUSTFLAGS}" RUST_LOG=warn \
+            cargo run "${INTRINSIC_TEST}" "${PROFILE}"  \
+            --bin intrinsic-test -- intrinsics_data/arm_intrinsics.json \
+            --runner "${TEST_RUNNER}" \
+            --cppcompiler "${TEST_CXX_COMPILER}" \
+            --skip "${TEST_SKIP_INTRINSICS}" \
+            --target "${TARGET}" \
+            --linker "${CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER}" \
+            --cxx-toolchain-dir "${AARCH64_BE_TOOLCHAIN}"
+        ;;
+     *)
+        ;;
+esac
 
 if [ "$NORUN" != "1" ] && [ "$NOSTD" != 1 ]; then
     # Test examples

crates/core_arch/src/aarch64/mod.rs

@@ -10,10 +10,7 @@ mod mte;
 #[unstable(feature = "stdarch_aarch64_mte", issue = "129010")]
 pub use self::mte::*;
 
-// NEON intrinsics are currently broken on big-endian, so don't expose them. (#1484)
-#[cfg(target_endian = "little")]
 mod neon;
-#[cfg(target_endian = "little")]
 #[stable(feature = "neon_intrinsics", since = "1.59.0")]
 pub use self::neon::*;