From 16ad16a49ca8bc55e1c91d3c13aeea3dad93848e Mon Sep 17 00:00:00 2001
From: Cuda-Chen <clh960524@gmail.com>
Date: Fri, 17 Nov 2023 22:17:43 +0800
Subject: [PATCH] Add A32 support in CI

Add A32 support in CI.

Currently choose Cortex-A32 as test target because it only supports
AArch32. Moreover, Cortex-A32 has Armv8-A Cryptographic Extension,
which is an ideal target for testing Cryptographic Extension.
---
 .github/workflows/github_actions.yml | 4 ++--
 Makefile                             | 6 +++++-
 README.md                            | 4 ++++
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/github_actions.yml b/.github/workflows/github_actions.yml
index 798aaed3..92be10fb 100644
--- a/.github/workflows/github_actions.yml
+++ b/.github/workflows/github_actions.yml
@@ -55,7 +55,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        arch_with_features: [{arch: armv7, feature: none}, {arch: aarch64, feature: none}, {arch: aarch64, feature: crypto+crc}]
+        arch_with_features: [{arch: armv7, feature: none}, {arch: aarch64, feature: none}, {arch: aarch64, feature: crypto+crc}, {arch: armv7, feature: none, set_a32: 1}]
         cxx_compiler: [g++-10, clang++-11]
     steps:
       - name: checkout code
@@ -74,7 +74,7 @@ jobs:
             apt-get install -q -y "${{ matrix.cxx_compiler }}" make
             apt-get install -q -y gcc
           run: |
-            make FEATURE=${{ matrix.arch_with_features.feature }} check
+            make FEATURE=${{ matrix.arch_with_features.feature }} A32=${{ matrix.arch_with_features.set_a32 }} check
 
   host_win_msvc:
     runs-on: windows-2022
diff --git a/Makefile b/Makefile
index f31dfab9..c8b1b6c5 100644
--- a/Makefile
+++ b/Makefile
@@ -34,7 +34,11 @@ ifeq ($(processor),$(filter $(processor),aarch64 arm64))
 else ifeq ($(processor),$(filter $(processor),i386 x86_64))
     ARCH_CFLAGS = -maes -mpclmul -mssse3 -msse4.2
 else ifeq ($(processor),$(filter $(processor),arm armv7 armv7l))
-    ARCH_CFLAGS = -mfpu=neon
+    ifdef A32
+        ARCH_CFLAGS = -mcpu=cortex-a32 -mfpu=neon-fp-armv8
+    else
+        ARCH_CFLAGS = -mfpu=neon
+    endif
 else
     $(error Unsupported architecture)
 endif
diff --git a/README.md b/README.md
index 83dfb075..625156b3 100644
--- a/README.md
+++ b/README.md
@@ -126,6 +126,10 @@ or
 ```shell
 $ make CROSS_COMPILE=arm-linux-gnueabihf- check # ARMv7-A
 ```
+or
+``` shell
+$ make CROSS_COMPILE=arm-linux-gnueabihf- A32=1 check # ARMv8-A running in 32-bit mode, i.e., A32 instruction set
+```
 
 Check the details via [Test Suite for SSE2NEON](tests/README.md).