pkg/wamr: add WAMR to provide WASM support in RIOT

pkg/wamr/CMakeLists.txt

@@ -0,0 +1,56 @@
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+cmake_minimum_required(VERSION 3.8.2)
+
+set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY")
+
+project(NONE)
+
+enable_language (ASM)
+
+set (WAMR_BUILD_PLATFORM "riot")
+
+# Build as X86_32 by default, change to "AARCH64[sub]", "ARM[sub]", "THUMB[sub]", "MIPS" or "XTENSA"
+# if we want to support arm, thumb, mips or xtensa
+if (NOT DEFINED WAMR_BUILD_TARGET)
+  set (WAMR_BUILD_TARGET "X86_32")
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_INTERP)
+  # Enable Interpreter by default
+  set (WAMR_BUILD_INTERP 1)
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_AOT)
+  # Disable AOT by default.
+  set (WAMR_BUILD_AOT 0)
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_LIBC_BUILTIN)
+  # Enable libc builtin support by default
+  set (WAMR_BUILD_LIBC_BUILTIN 1)
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_LIBC_WASI)
+  # Disable libc wasi support by default
+  set (WAMR_BUILD_LIBC_WASI 0)
+endif ()
+
+if (NOT DEFINED WAMR_ROOT_DIR)
+  # this assumption is true if this file is copied to WAMR_ROOT
+  set (WAMR_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+endif ()
+
+include (${WAMR_ROOT_DIR}/build-scripts/runtime_lib.cmake)
+
+# need includes from RIOT
+string(REGEX MATCHALL "([^\ ]+\ |[^\ ]+$)" RIOT_INCLUDES_LIST "${RIOT_INCLUDES}")
+
+include_directories(SYSTEM ${RIOT_INCLUDES_LIST})
+
+
+# target_sources( ${WAMR_RUNTIME_LIB_SOURCE} )
+# executable linking is done by RIOT build system
+
+add_library( wamr ${WAMR_RUNTIME_LIB_SOURCE})

pkg/wamr/Makefile

@@ -0,0 +1,61 @@
+PKG_NAME=wamr
+PKG_URL=https://github.com/bytecodealliance/wasm-micro-runtime.git
+PKG_VERSION=main
+PKG_LICENSE=Apache-2.0
+
+include $(RIOTBASE)/pkg/pkg.mk
+
+#less Wall TODO: get things fixed upstream
+CFLAGS :=  $(filter-out -pedantic, $(CFLAGS))
+CFLAGS += -Wno-format
+CFLAGS += -Wno-strict-prototypes
+CFLAGS += -Wno-old-style-definition
+CFLAGS += -Wno-cast-function-type
+
+#Prepapre includes for cmake
+RIOT_INCLUDES = $(filter-out -%,$(subst -I,,$(INCLUDES)))
+
+#translate (CPU_ARCH) to Build Target
+#WAMR_BUILD_TARGET is "X86_32" "AARCH64[sub]", "ARM[sub]",
+#                     "THUMB[sub]", "MIPS" or "XTENSA"
+#no msp430, no AVR support for now
+ifeq ($(CPU),native)
+#$(CPU) ist defined for every CPU
+#everyone build on x86_32
+	WAMR_BUILD_TARGET = X86_32
+else ifeq ($(findstring arm,$(CPU_ARCH)),arm)
+	WAMR_BUILD_TARGET = THUMB
+else ifeq ($(CPU_ARCH),mips32r2)
+	WAMR_BUILD_TARGET = MIPS
+else ifeq ($(CPU_ARCH),xtensa)
+	WAMR_BUILD_TARGET = XTENSA
+endif
+
+ifeq ($(QUIET), 0)
+	CMAKEMAKEFLAGS += VERBOSE=1
+endif
+
+
+all: $(BINDIR)/libwamr.a
+
+$(BINDIR)/libwamr.a: $(PKG_BUILD_DIR)/libwamr.a
+	cp $< $@
+
+$(PKG_BUILD_DIR)/libwamr.a: $(PKG_BUILD_DIR)/Makefile
+	$(MAKE) -C $(PKG_BUILD_DIR) $(CMAKEMAKEFLAGS)
+
+$(PKG_BUILD_DIR)/Makefile: $(PKG_PREPARED)
+	cmake -B$(PKG_BUILD_DIR) \
+		"-DRIOT_INCLUDES=$(RIOT_INCLUDES)"\
+		-DWAMR_BUILD_TARGET=$(WAMR_BUILD_TARGET)\
+		-DWAMR_ROOT_DIR=$(PKG_SOURCE_DIR)\\
+		-DCMAKE_SYSTEM_NAME=Generic \
+		-DCMAKE_SYSTEM_PROCESSOR="$(MCPU)" \
+		-DCMAKE_C_COMPILER=$(CC) \
+		-DCMAKE_C_COMPILER_WORKS=TRUE \
+
+print_build_target:
+	@echo CPU_ARCH: $(CPU_ARCH)
+	@echo CPU: $(CPU)
+	@echo CFLAGS: $(CFLAGS)
+	@echo WAMR_BUILD_TARGET: $(WAMR_BUILD_TARGET)

pkg/wamr/Makefile.dep

@@ -0,0 +1,5 @@
+USEMODULE += sema
+
+#WAMR supports "X86_32/64", "AARCH64", "ARM", "THUMB", "MIPS" and "XTENSA"
+#no 8/16 Bit TODO: might need to blacklist more
+FEATURES_BLACKLIST += arch_8bit arch_16bit

pkg/wamr/Makefile.include

@@ -0,0 +1,12 @@
+IWASM_CORE = $(PKGDIRBASE)/wamr/core
+IWASM_ROOT = $(IWASM_CORE)/iwasm
+SHARED_LIB_ROOT = $(IWASM_CORE)/shared
+
+IWASM_INCLUDES += ${IWASM_ROOT}/include \
+                   ${SHARED_LIB_ROOT}/platform/include \
+                   ${SHARED_LIB_ROOT}/platform/riot \
+
+
+INCLUDES += $(addprefix -I,${IWASM_INCLUDES})
+
+ARCHIVES += $(BINDIR)/libwamr.a

pkg/wamr/doc.txt

@@ -0,0 +1,6 @@
+/**
+ * @defgroup pkg_wamr WebAssembly Micro Runtime
+ * @ingroup  pkg
+ * @brief    Provides WebAssembly support for RIOT
+ * @see      https://github.com/bytecodealliance/wasm-micro-runtime
+ */