[libcpu/aarch64] add smp support

Author: GuEe-GUI

.github/workflows/action.yml

@@ -145,11 +145,15 @@ jobs:
          - {RTT_BSP: "at32/at32f407-start", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "smartfusion2", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "raspberry-pico", RTT_TOOL_CHAIN: "sourcery-arm"}
+         - {RTT_BSP: "raspberry-pi/raspi3-32", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "raspberry-pi/raspi4-32", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "hc32l196", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "tae32f5300", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "bluetrum/ab32vg1-ab-prougen", RTT_TOOL_CHAIN: "sourcery-riscv64-unknown-elf"}
          - {RTT_BSP: "k210", RTT_TOOL_CHAIN: "sourcery-riscv-none-embed"}
+         - {RTT_BSP: "qemu-virt64-aarch64", RTT_TOOL_CHAIN: "sourcery-aarch64"}
+         - {RTT_BSP: "raspberry-pi/raspi3-64", RTT_TOOL_CHAIN: "sourcery-aarch64"}
+         - {RTT_BSP: "raspberry-pi/raspi4-64", RTT_TOOL_CHAIN: "sourcery-aarch64"}
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python
@@ -178,6 +182,15 @@ jobs:
           /opt/gcc-arm-none-eabi-10-2020-q4-major/bin/arm-none-eabi-gcc --version
           echo "RTT_EXEC_PATH=/opt/gcc-arm-none-eabi-10-2020-q4-major/bin" >> $GITHUB_ENV
 
+      - name: Install AArch64 ToolChains
+        if: ${{ matrix.legs.RTT_TOOL_CHAIN == 'sourcery-aarch64' && success() }}
+        shell: bash
+        run: |
+          wget -q https://github.com/RT-Thread/toolchains-ci/releases/download/v1.6/gcc-arm-10.2-2020.11-x86_64-aarch64-none-elf.tar.xz
+          sudo tar -xf gcc-arm-10.2-2020.11-x86_64-aarch64-none-elf.tar.xz -C /opt
+          /opt/gcc-arm-10.2-2020.11-x86_64-aarch64-none-elf/bin/aarch64-none-elf-gcc --version
+          echo "RTT_EXEC_PATH=/opt/gcc-arm-10.2-2020.11-x86_64-aarch64-none-elf/bin" >> $GITHUB_ENV
+
       - name: Install Mips ToolChains
         if: ${{ matrix.legs.RTT_TOOL_CHAIN == 'sourcery-mips' && success() }}
         shell: bash