Add aarch64 library variants for no-unaligned-access

CMakeLists.txt

@@ -725,6 +725,7 @@ function(
     default_ram_size
     default_stack_size
     run_tests
+    executor
 )
     if(CMAKE_INSTALL_MESSAGE STREQUAL NEVER)
         set(MESON_INSTALL_QUIET "--quiet")
@@ -758,6 +759,7 @@ function(
             -Dspecsdir=none
             -Dmultilib=false
             -Dtests-enable-stack-protector=false
+            -Dtest-machine=${executor}
             -Dtest-long-double=${enable_long_double_test}
             -Dnewlib-nano-malloc=${newlib_nano_malloc}
             --prefix <INSTALL_DIR>
@@ -1045,6 +1047,7 @@ macro(
     default_ram_size
     default_stack_size
     run_tests
+    executor
 )
     # It would be nice to just pass ${ARGN} to both the underlying functions,
     # but that has the side effect of expanding any list arguments (e.g.
@@ -1067,6 +1070,7 @@ macro(
             "${default_ram_size}"
             "${default_stack_size}"
             "${run_tests}"
+            "${executor}"
         )
     elseif(LLVM_TOOLCHAIN_C_LIBRARY STREQUAL newlib)
         add_newlib(
@@ -1458,6 +1462,7 @@ function(add_library_variant target_arch)
             set(have_executor FALSE)
         endif()
     else()
+        set(VARIANT_EXECUTOR "qemu")
         get_qemu_params(
             "${target_triple}"
             "${VARIANT_QEMU_MACHINE}"
@@ -1488,6 +1493,7 @@ function(add_library_variant target_arch)
             "${VARIANT_RAM_SIZE}"
             "${VARIANT_STACK_SIZE}"
             "${have_executor}"
+            "${VARIANT_EXECUTOR}"
         )
         add_compiler_rt(
             "${directory}"
@@ -1649,6 +1655,23 @@ add_library_variants_for_cpu(
     RAM_SIZE 0x1000000
     STACK_SIZE 8K
 )
+add_library_variants_for_cpu(
+    aarch64a
+    SUFFIX strict_align
+    COMPILE_FLAGS "-march=armv8-a -mno-unaligned-access"
+    MULTILIB_FLAGS "--target=aarch64-unknown-none-elf -mno-unaligned-access"
+    PICOLIBC_BUILD_TYPE "release"
+    EXECUTOR fvp
+    FVP_MODEL aem-a
+    FVP_CONFIG "v8a-aarch64"
+    BOOT_FLASH_ADDRESS 0x80000000
+    BOOT_FLASH_SIZE 0x1000
+    FLASH_ADDRESS 0x80001000
+    FLASH_SIZE 0xfff000
+    RAM_ADDRESS 0x81000000
+    RAM_SIZE 0x1000000
+    STACK_SIZE 8K
+)
 # For AArch32, clang uses different defaults for FPU selection than GCC, both
 # when "+fp" or "+fp.dp" are used and when no FPU specifier is provided in
 # "-march=". Using "-mfpu=" explicitly.

patches/picolibc/0001-Enable-libcxx-builds.patch

@@ -1,7 +1,7 @@
-From 42f07bef7775a1387f9707e959f8b6782f9d6808 Mon Sep 17 00:00:00 2001
+From 028fe75e045951a9d091008a85971523358160db Mon Sep 17 00:00:00 2001
 From: Simi Pallipurath <[email protected]>
 Date: Thu, 14 Nov 2024 10:07:08 +0000
-Subject: [PATCH 1/2] [PATCH 1/2] Enable libcxx builds
+Subject: Enable libcxx builds
 
 Modifications to build config and linker script required to enable
 libc++ builds.
@@ -47,3 +47,6 @@ index 7b63ba172..cda5e1e7e 100644
  		*(.gnu.linkonce.t.*)
  		KEEP (*(.fini .fini.*))
  		@PREFIX@__text_end = .;
+-- 
+2.39.5 (Apple Git-154)
+

patches/picolibc/0002-Add-bootcode-for-AArch64-FVPs.patch

@@ -1,7 +1,7 @@
-From f2ca20cebc85850a50b80424bb0f81c927edd04b Mon Sep 17 00:00:00 2001
+From 58451642e678817d8822b04b8ff07ee4758a8f10 Mon Sep 17 00:00:00 2001
 From: Simi Pallipurath <[email protected]>
 Date: Thu, 14 Nov 2024 10:12:33 +0000
-Subject: [PATCH 2/2] [PATCH 2/2] Add bootcode for AArch64 FVPs
+Subject: Add bootcode for AArch64 FVPs
 
 The AArch64 FVP (Fixed Virtual Platform) models differ from QEMU in a
 few ways which affect the crt0 code:
@@ -868,3 +868,6 @@ index 76965990f..be8f875be 100644
 +  endforeach
 
  endforeach
+-- 
+2.39.5 (Apple Git-154)
+