Add an example that builds .asm files

example/CMakeLists.txt

@@ -9,10 +9,11 @@ endif()
 
 project(WindowsToolchainExample)
 
-if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-    message(STATUS "MSVC_VERSION = ${MSVC_VERSION}")
-    message(STATUS "MSVC_TOOLSET_VERSION = ${MSVC_TOOLSET_VERSION}")
-endif()
+# Write properties that are influenced by the toolchain
+#
+message(STATUS "CMAKE_SYSTEM_PROCESSOR = ${CMAKE_SYSTEM_PROCESSOR}")
+message(STATUS "MSVC_VERSION = ${MSVC_VERSION}")
+message(STATUS "MSVC_TOOLSET_VERSION = ${MSVC_TOOLSET_VERSION}")
 
 # Demonstrate that toolchain-related tooling can be found
 #
@@ -30,6 +31,7 @@ add_compile_definitions(
 )
 
 add_subdirectory(CommandLine)
+add_subdirectory(CommandLineAsm)
 add_subdirectory(CommandLineC)
 add_subdirectory(SharedLibrary)
 add_subdirectory(WindowsApplication)

example/CMakePresets.json

@@ -138,7 +138,9 @@
       "displayName": "Windows-only configuration",
       "description": "This build is only available on Windows",
       "generator": "Visual Studio 17 2022",
-      "cacheVariables": {}
+      "cacheVariables": {
+        "CMAKE_SYSTEM_NAME": "Windows"
+      }
     },
     {
       "name": "windows-vs-x64",
@@ -148,7 +150,8 @@
       "displayName": "windows-vs-x64",
       "description": "This build is only available on Windows",
       "cacheVariables": {
-        "CMAKE_GENERATOR_PLATFORM": "x64,version=10.0.22621.0"
+        "CMAKE_GENERATOR_PLATFORM": "x64,version=10.0.22621.0",
+        "CMAKE_SYSTEM_PROCESSOR": "AMD64"
       }
     },
     {
@@ -159,7 +162,8 @@
       "displayName": "windows-vs-arm64",
       "description": "This build is only available on Windows",
       "cacheVariables": {
-        "CMAKE_GENERATOR_PLATFORM": "ARM64,version=10.0.22621.0"
+        "CMAKE_GENERATOR_PLATFORM": "ARM64,version=10.0.22621.0",
+        "CMAKE_SYSTEM_PROCESSOR": "ARM64"
       }
     }
   ],

example/CommandLineAsm/CMakeLists.txt

@@ -0,0 +1,17 @@
+#----------------------------------------------------------------------------------------------------------------------
+#
+#----------------------------------------------------------------------------------------------------------------------
+project(CommandLineAsm LANGUAGES CXX)
+
+if((CMAKE_SYSTEM_PROCESSOR STREQUAL AMD64) OR (CMAKE_SYSTEM_PROCESSOR STREQUAL X86))
+    enable_language(ASM_MASM)
+elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL ARM64)
+    enable_language(ASM_MARMASM)
+else()
+    message(FATAL_ERROR "Unknown CMAKE_SYSTEM_PROCESSOR for ASM language.")
+endif()
+
+add_executable(CommandLineAsm
+    main.cpp
+    helper.${CMAKE_SYSTEM_PROCESSOR}.asm
+)

example/CommandLineAsm/helper.AMD64.asm

@@ -0,0 +1,11 @@
+INCLUDE macamd64.inc
+
+_TEXT SEGMENT READONLY 'CODE'
+
+LEAF_ENTRY CallAsmCode, _TEXT
+    mov rax, 42
+    ret
+LEAF_END CallAsmCode, _TEXT
+
+_TEXT ENDS
+END

example/CommandLineAsm/helper.ARM64.asm

@@ -0,0 +1,10 @@
+            AREA .text,CODE,READONLY
+            EXPORT CallAsmCode
+
+            ALIGN
+CallAsmCode FUNCTION
+            mov     lr, 42
+            ret
+            ENDFUNC
+
+            END

example/CommandLineAsm/helper.X86.asm

@@ -0,0 +1,14 @@
+INCLUDE callconv.inc
+
+.386
+.MODEL flat
+
+_TEXT SEGMENT READONLY 'CODE'
+
+_CallAsmCode PROC
+    mov eax, DWORD PTR 42
+    ret
+_CallAsmCode ENDP
+
+_TEXT ENDS
+END

example/CommandLineAsm/main.cpp

@@ -0,0 +1,28 @@
+//---------------------------------------------------------------------------------------------------------------------
+//
+//---------------------------------------------------------------------------------------------------------------------
+#include <exception>
+#include <iostream>
+
+extern "C"
+{
+    int CallAsmCode();
+}
+
+int main(int /*argc*/, char** /*argv*/)
+{
+    try
+    {
+        try
+        {
+            std::cout << "Value from asm: " << CallAsmCode();
+        }
+        catch (const std::exception& ex)
+        {
+            std::cout << "Exception: " << ex.what();
+        }
+    }
+    catch (...)
+    {
+    }
+}