From d2069d5d07b9b3268c9e12d6e92fc7f8c2d35619 Mon Sep 17 00:00:00 2001
From: Nicolas <Nicolas@nonan.net>
Date: Mon, 2 Mar 2026 21:32:12 +0100
Subject: [PATCH] build script for local stencil builds updated for ARM64,
 ARM-Thumb and ARM-CortexM-Thumb

---
 tools/build.sh | 45 ++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 38 insertions(+), 7 deletions(-)

diff --git a/tools/build.sh b/tools/build.sh
index 4af186a..28679fd 100644
--- a/tools/build.sh
+++ b/tools/build.sh
@@ -4,10 +4,10 @@ set -eu
 ARCH=${1:-x86_64}
 
 case "$ARCH" in
-    (x86_64|arm-v6|arm-v7|arm-v7-thumb|arm-v7m-thumb|all)
+    (x86_64|arm64|arm-v6|arm-v7|arm-v7-thumb|arm-v7m-thumb|all)
         ;;
     (*)
-        echo "Usage: $0 [x86_64|arm-v6|arm-v7|arm-v6-thumb|arm-v7m-thumb|all]"
+        echo "Usage: $0 [x86_64|arm64|arm-v6|arm-v7|arm-v6-thumb|arm-v7m-thumb|all]"
         exit 1
         ;;
 esac
@@ -42,13 +42,44 @@ if [[ "$ARCH" == "x86_64" || "$ARCH" == "all" ]]; then
         -o build/runner/coparun
 fi
 
+#######################################
+# ARM 64
+#######################################
+if [[ "$ARCH" == "arm64" || "$ARCH" == "all" ]]; then
+    echo "--------------arm64----------------"
+
+    LIBGCC=$(aarch64-linux-gnu-gcc -print-libgcc-file-name)
+
+    aarch64-linux-gnu-gcc -fno-pic -ffunction-sections \
+        -c $SRC -O3 -o build/stencils/stencils.o
+
+    aarch64-linux-gnu-ld -r \
+        build/stencils/stencils.o \
+        build/musl/musl_objects_arm64.o \
+        $LIBGCC \
+        -o $DEST/stencils_arm64_O3.o
+
+    aarch64-linux-gnu-objdump -d -x \
+        $DEST/stencils_arm64_O3.o \
+        > build/stencils/stencils_arm64_O3.asm
+
+    aarch64-linux-gnu-gcc \
+        -Wall -Wextra -Wconversion -Wsign-conversion -static \
+        -Wshadow -Wstrict-overflow -O3 \
+        -DENABLE_LOGGING \
+        src/coparun/runmem.c \
+        src/coparun/coparun.c \
+        src/coparun/mem_man.c \
+        -o build/runner/coparun-arm64
+fi
+
 #######################################
 # ARM v6
 #######################################
 if [[ "$ARCH" == "arm-v6" || "$ARCH" == "all" ]]; then
     echo "--------------arm-v6 32 bit----------------"
 
-    LIBGCC=$(arm-none-eabi-gcc -print-libgcc-file-name)
+    LIBGCC=$(arm-none-eabi-gcc -march=armv6 -mfpu=vfp -mfloat-abi=hard -marm -print-libgcc-file-name)
 
     arm-none-eabi-gcc -fno-pic -ffunction-sections \
         -march=armv6 -mfpu=vfp -mfloat-abi=hard -marm \
@@ -81,7 +112,7 @@ fi
 if [[ "$ARCH" == "arm-v7" || "$ARCH" == "all" ]]; then
     echo "--------------arm-v7 32 bit----------------"
 
-    LIBGCC=$(arm-none-eabi-gcc -print-libgcc-file-name)
+    LIBGCC=$(arm-none-eabi-gcc -march=armv7-a -mfpu=neon-vfpv3 -mfloat-abi=hard -marm -print-libgcc-file-name)
 
     arm-none-eabi-gcc -fno-pic -ffunction-sections \
         -march=armv7-a -mfpu=neon-vfpv3 -mfloat-abi=hard -marm \
@@ -114,7 +145,7 @@ fi
 if [[ "$ARCH" == "arm-v7-thumb" || "$ARCH" == "all" ]]; then
     echo "--------------arm-v7a-thumb 32 bit----------------"
 
-    LIBGCC=$(arm-none-eabi-gcc -print-libgcc-file-name)
+    LIBGCC=$(arm-none-eabi-gcc -march=armv7 -mfpu=vfp3 -mthumb -print-libgcc-file-name)
 
     arm-none-eabi-gcc -fno-pic -ffunction-sections \
         -march=armv7-a -mfpu=neon-vfpv3 -mfloat-abi=hard -mthumb \
@@ -122,7 +153,7 @@ if [[ "$ARCH" == "arm-v7-thumb" || "$ARCH" == "all" ]]; then
 
     arm-none-eabi-ld -r \
         build/stencils/stencils.o \
-        build/musl/musl_objects_armv7.o \
+        build/musl/musl_objects_armv7thumb.o \
         $LIBGCC \
         -o $DEST/stencils_armv7thumb_O3.o
 
@@ -147,7 +178,7 @@ fi
 if [[ "$ARCH" == "arm-v7m-thumb" || "$ARCH" == "all" ]]; then
     echo "--------------arm-v7m-thumb 32 bit----------------"
 
-    LIBGCC=$(arm-none-eabi-gcc -print-libgcc-file-name)
+    LIBGCC=$(arm-none-eabi-gcc -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb -print-libgcc-file-name)
 
     arm-none-eabi-gcc -fno-pic -ffunction-sections \
         -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb \