libc_bypass: Move libc nuttx from apps to frameworks

libc_bypass/.gitignore

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+syscall_glue.c
+libc_glue.c
+libm_glue.c

libc_bypass/Kconfig

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+#
+# Copyright (C) 2024 Xiaomi Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+config WASM_LIBC_BYPASS
+    bool "Enable bypass libc to use NuttX system calls"
+    default n
+    ---help---
+        Bypass libc to use NuttX system calls
+
+        If this option is enabled, the libc will be bypassed and the NuttX
+        system calls will be used directly. This only works with bounds check
+        disabled.
+
+if WASM_LIBC_BYPASS
+
+config LIBC_BYPASS_POSIXMEMALIGN_MAP_SIZE
+    int "Set the size for posix_memalign mapping"
+    default 64
+    ---help---
+        This option sets the size for the posix_memalign mapping when
+        bypassing libc to use NuttX system calls.
+
+endif

libc_bypass/Make.defs

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+#
+# Copyright (C) 2024 Xiaomi Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+ifneq ($(CONFIG_WASM_LIBC_BYPASS),)
+CONFIGURED_APPS += $(APPDIR)/frameworks/runtimes/wasm/libc_bypass
+endif # CONFIG_WASM_LIBC_BYPASS

libc_bypass/Makefile

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+#
+# Copyright (C) 2024 Xiaomi Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+include $(APPDIR)/Make.defs
+
+IWASM_ROOT := $(APPDIR)/interpreters/wamr
+
+CSRCS += libc_bypass.c
+
+#Filter compilation warnings for syscall library
+CFLAGS += -Wno-unused-variable -Wno-int-conversion
+
+WAMR_MODULE_NAME = libc_bypass
+
+
+GLUECSRCS = syscall_glue.c libc_glue.c libm_glue.c
+CSVSRCS = $(TOPDIR)/syscall/syscall.csv $(TOPDIR)/libs/libc/libc.csv $(TOPDIR)/libs/libm/libm.csv
+
+$(GLUECSRCS): $(CSVSRCS) ../tools/mkwamrglue.py
+	$(Q) ../tools/mkwamrglue.py -i $(TOPDIR)/syscall/syscall.csv -o syscall_glue.c
+	$(Q) ../tools/mkwamrglue.py -i $(TOPDIR)/libs/libc/libc.csv -o libc_glue.c
+	$(Q) ../tools/mkwamrglue.py -i $(TOPDIR)/libs/libm/libm.csv -o libm_glue.c
+	gcc -shared -fPIC -o signature_libc.so signature_libc_glue.c -I$(IWASM_ROOT)
+	gcc -shared -fPIC -o signature_libm.so signature_libm_glue.c -I$(IWASM_ROOT)
+	gcc -shared -fPIC -o signature_syscall.so signature_syscall_glue.c -I$(IWASM_ROOT)
+
+depend:: $(GLUECSRCS)
+
+distclean::
+	$(call DELFILE, syscall_glue.c)
+	$(call DELFILE, libc_glue.c)
+	$(call DELFILE, libm_glue.c)
+
+include $(APPDIR)/interpreters/wamr/Module.mk
+include $(APPDIR)/Application.mk