Initial WASM C API implementation. (#1250)

All tests except `threads` pass.

1 files changed, 60 insertions, 2 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index edbb072e..363a5660 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -224,7 +224,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${WABT_SOURCE_DIR}/cmake)
 
 add_custom_target(everything)
 
-add_library(wabt STATIC
+set(WABT_LIBRARY_SRC
   src/apply-names.h
   src/apply-names.cc
   src/binary.h
@@ -308,12 +308,27 @@ add_library(wabt STATIC
   # TODO(binji): Move this into its own library?
   src/interp/binary-reader-interp.h
   src/interp/binary-reader-interp.cc
+  src/interp/binary-reader-metadata.h
+  src/interp/binary-reader-metadata.cc
   src/interp/interp.h
   src/interp/interp.cc
   src/interp/interp-disassemble.cc
   src/interp/interp-trace.cc
 )
 
+add_library(wabt STATIC ${WABT_LIBRARY_SRC})
+
+# libwasm, which implenents the wasm C API
+add_library(wasm SHARED ${WABT_LIBRARY_SRC} src/interp/interp-wasm-c-api.cc)
+target_link_libraries(wasm wabt)
+target_include_directories(wasm PUBLIC third_party/wasm-c-api/include)
+if (COMPILER_IS_MSVC)
+  target_compile_definitions(wasm PRIVATE "WASM_API_EXTERN=__declspec(dllexport)")
+else ()
+  target_compile_options(wasm PRIVATE -Wno-old-style-cast)
+  target_compile_definitions(wasm PRIVATE "WASM_API_EXTERN=__attribute__((visibility(\"default\")))")
+endif ()
+set_target_properties(wasm PROPERTIES CXX_VISIBILITY_PRESET hidden)
 
 if (NOT EMSCRIPTEN)
   if (CODE_COVERAGE)
@@ -507,6 +522,7 @@ if (NOT EMSCRIPTEN)
     # See: https://github.com/actions/setup-python/issues/40
     find_package(PythonInterp REQUIRED)
     set(RUN_TESTS_PY ${WABT_SOURCE_DIR}/test/run-tests.py)
+
     add_custom_target(run-tests
       COMMAND ${PYTHON_EXECUTABLE} ${RUN_TESTS_PY} --bindir $<TARGET_FILE_DIR:wat2wasm>
       DEPENDS ${WABT_EXECUTABLES}
@@ -521,7 +537,49 @@ if (NOT EMSCRIPTEN)
       ${USES_TERMINAL}
     )
 
-    add_custom_target(check DEPENDS run-tests wabt-unittests)
+    add_custom_target(run-c-api-tests
+      COMMAND ${PYTHON_EXECUTABLE} ${WABT_SOURCE_DIR}/test/run-c-api-examples.py --bindir $<TARGET_FILE_DIR:wat2wasm>
+      WORKING_DIRECTORY ${WABT_SOURCE_DIR}
+      ${USES_TERMINAL}
+    )
+
+    add_custom_target(check DEPENDS run-unittests run-tests run-c-api-tests)
+
+    function(c_api_example NAME)
+      set(EXENAME wasm-c-api-${NAME})
+      add_executable(${EXENAME} third_party/wasm-c-api/example/${NAME}.c)
+      if (NOT COMPILER_IS_MSVC)
+        set_target_properties(${EXENAME} PROPERTIES COMPILE_FLAGS "-std=gnu11 -Wno-pointer-to-int-cast")
+      endif ()
+      target_link_libraries(${EXENAME} wasm Threads::Threads)
+      add_custom_target(${EXENAME}-copy-to-bin ALL
+        COMMAND ${CMAKE_COMMAND} -E make_directory ${WABT_SOURCE_DIR}/bin
+        COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:${EXENAME}> ${WABT_SOURCE_DIR}/bin/
+        COMMAND ${CMAKE_COMMAND} -E copy ${WABT_SOURCE_DIR}/third_party/wasm-c-api/example/${NAME}.wasm $<TARGET_FILE_DIR:${EXENAME}>/
+        COMMAND ${CMAKE_COMMAND} -E copy ${WABT_SOURCE_DIR}/third_party/wasm-c-api/example/${NAME}.wasm ${WABT_SOURCE_DIR}/bin/
+        DEPENDS ${EXENAME}
+      )
+      add_dependencies(run-c-api-tests ${EXENAME})
+    endfunction()
+
+    c_api_example(callback)
+    c_api_example(finalize)
+    c_api_example(global)
+    c_api_example(hello)
+    c_api_example(hostref)
+    c_api_example(multi)
+    c_api_example(memory)
+    c_api_example(reflect)
+    c_api_example(serialize)
+    c_api_example(start)
+    c_api_example(table)
+    c_api_example(trap)
+    if (NOT WIN32)
+      # depends on pthreads
+      set(THREADS_PREFER_PTHREAD_FLAG ON)
+      find_package(Threads REQUIRED)
+      c_api_example(threads)
+    endif ()
   endif ()
 
   # install