3 files changed, 66 insertions, 0 deletions
diff --git a/scripts/build_tx_riscv.sh b/scripts/build_tx_riscv.sh
new file mode 100755
index 00000000..bad952df
--- /dev/null
+++ b/scripts/build_tx_riscv.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+# Build RISC-V regression tests for both RV32 and RV64.
+# Usage: build_tx_riscv.sh [all|<config>]
+
+SCRIPT_DIR="$(dirname "$(realpath "$0")")"
+RUN_SH="${SCRIPT_DIR}/../test/tx/cmake/riscv/run.sh"
+
+ARGS="${@:-all}"
+
+echo "=== Building RISC-V32 ==="
+"$RUN_SH" riscv32 build $ARGS
+
+echo ""
+echo "=== Building RISC-V64 ==="
+"$RUN_SH" riscv64 build $ARGS
diff --git a/scripts/install_riscv.sh b/scripts/install_riscv.sh
new file mode 100755
index 00000000..9c2f2cdb
--- /dev/null
+++ b/scripts/install_riscv.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+# Install RISC-V bare-metal cross-compiler toolchain and QEMU for CI.
+set -e
+
+RELEASE_TAG="2026.04.26"
+BASE_URL="https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/${RELEASE_TAG}"
+# Use ubuntu-24.04 binaries to match ubuntu-latest runners.
+RV32_TARBALL="riscv32-elf-ubuntu-24.04-gcc.tar.xz"
+RV64_TARBALL="riscv64-elf-ubuntu-24.04-gcc.tar.xz"
+
+echo "=== Installing QEMU and build tools ==="
+sudo apt-get update -qq
+sudo apt-get install -y -qq qemu-system-misc ninja-build cmake
+
+echo "=== Downloading RISC-V GCC toolchain (${RELEASE_TAG}) ==="
+
+# Both tarballs extract into riscv/ with non-overlapping prefixes
+# (riscv32-unknown-elf-* and riscv64-unknown-elf-*).
+for tarball in "$RV32_TARBALL" "$RV64_TARBALL"; do
+    echo "Downloading ${tarball} ..."
+    wget --no-verbose "${BASE_URL}/${tarball}" -O "/tmp/${tarball}"
+    sudo tar xJf "/tmp/${tarball}" -C /opt
+    rm "/tmp/${tarball}"
+done
+
+TOOLCHAIN_BIN=/opt/riscv/bin
+echo "$TOOLCHAIN_BIN" >> "$GITHUB_PATH"
+
+echo "=== Verifying installation ==="
+"$TOOLCHAIN_BIN/riscv32-unknown-elf-gcc" --version | head -1
+"$TOOLCHAIN_BIN/riscv64-unknown-elf-gcc" --version | head -1
+qemu-system-riscv64 --version | head -1
diff --git a/scripts/test_tx_riscv.sh b/scripts/test_tx_riscv.sh
new file mode 100755
index 00000000..7d35c53f
--- /dev/null
+++ b/scripts/test_tx_riscv.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+# Run RISC-V regression tests for both RV32 and RV64 on QEMU.
+# Usage: test_tx_riscv.sh [all|<config>]
+
+SCRIPT_DIR="$(dirname "$(realpath "$0")")"
+RUN_SH="${SCRIPT_DIR}/../test/tx/cmake/riscv/run.sh"
+
+ARGS="${@:-all}"
+
+exit_code=0
+
+echo "=== Testing RISC-V32 ==="
+CTEST_PARALLEL_LEVEL=4 "$RUN_SH" riscv32 test $ARGS || exit_code=$?
+
+echo ""
+echo "=== Testing RISC-V64 ==="
+CTEST_PARALLEL_LEVEL=4 "$RUN_SH" riscv64 test $ARGS || exit_code=$?
+
+exit $exit_code