Add basic C++ support

Author: qwang

components/bl602/bl602/evb/ld/flash_rom.ld

@@ -80,6 +80,23 @@ SECTIONS
     _rom_framework_audio_device_end = .;
   } > flash
 
+  .preinit_array :
+  {
+    . = ALIGN(4);
+    __preinit_array_start = .;
+    KEEP (*(.preinit_array))
+    __preinit_array_end = .;
+  } > flash
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    __init_array_start = .;
+    KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*)))
+    KEEP (*(.init_array))
+    __init_array_end = .;
+  } > flash
+
   /*put wifibss in the first place*/
   .wifibss         (NOLOAD) :
   {

components/bl602/bl602/evb/src/boot/gcc/start.S

@@ -119,6 +119,27 @@ bl602_start:
 	sd ra, 8(sp)
 #endif
 
+// call global obj constructors
+    la s1, __preinit_array_start
+    la s2, __preinit_array_end
+    li s3, 4
+1:
+    bgeu s1, s2, 2f
+    lw a3, (s1)
+    jalr a3
+    add s1, s1, s3
+    j 1b
+2:
+    la s1, __init_array_start
+    la s2, __init_array_end
+    li s3, 4
+1:
+    bgeu s1, s2, 2f
+    lw a3, (s1)
+    jalr a3
+    add s1, s1, s3
+    j 1b
+2:
 	/* argc = argv = 0 */
 	li a0, 0
 	li a1, 0

components/hal_drv/bl602.mk

@@ -1,7 +1,7 @@
 # Component Makefile
 #
 ## These include paths would be exported to project level
-COMPONENT_ADD_INCLUDEDIRS += bl602_hal
+COMPONENT_ADD_INCLUDEDIRS += bl602_hal platform_hal
 
 ## not be exported to project level
 COMPONENT_PRIV_INCLUDEDIRS :=
@@ -50,8 +50,10 @@ COMPONENT_SRCS := bl602_hal/bl_uart.c \
                   bl602_hal/hal_spi.c \
                   bl602_hal/hal_adc.c \
                   bl602_hal/hal_wifi.c \
+                  platform_hal/platform_hal_device.cpp \
 
-COMPONENT_SRCDIRS := bl602_hal
+
+COMPONENT_SRCDIRS := bl602_hal platform_hal
 
 COMPONENT_OBJS := $(patsubst %.c,%.o, $(COMPONENT_SRCS))
 COMPONENT_OBJS := $(patsubst %.cpp,%.o, $(COMPONENT_OBJS))

components/hal_drv/platform_hal/platform_hal_device.cpp

@@ -32,23 +32,23 @@
 
 extern "C" void* operator new(size_t size) 
 {
-    printf("[C++] new %d\r\n", size);
+    /* printf("[C++] new %d\r\n", size); */
     return pvPortMalloc(size); 
 }
 
 extern "C" void* operator new[](size_t size) 
 {
-    printf("[C++] new[] %d\r\n", size);
+    /* printf("[C++] new[] %d\r\n", size); */
     return pvPortMalloc(size); 
 }
 
 extern "C" void operator delete(void* ptr) {
-    printf("[C++] delete %p\r\n", ptr);
+    /* printf("[C++] delete %p\r\n", ptr); */
     vPortFree(ptr);
 }
 
 extern "C" void operator delete[](void* ptr) {
-    printf("[C++] delete[] %p\r\n", ptr);
+    /* printf("[C++] delete[] %p\r\n", ptr); */
     vPortFree(ptr);
 }
 
@@ -242,6 +242,7 @@ extern "C" int platform_hal_device_init(void)
     class BLAesRequest *aes_request = new BLAesRequest[6];
     aes_engine = new BLAesEngine();
 
+    (void)aes_request;
 #if 0
     aes_engine->encryption(aes_request[0]);
 #endif

make_scripts_riscv/component_wrapper.mk

@@ -281,7 +281,7 @@ $(2)/%.o: $$(COMPONENT_PATH)/$(1)/%.c $(COMMON_MAKEFILES) $(COMPONENT_MAKEFILE)
 
 $(2)/%.o: $$(COMPONENT_PATH)/$(1)/%.cpp $(COMMON_MAKEFILES) $(COMPONENT_MAKEFILE) | $(COMPONENT_OBJDIRS)
 	$$(summary) CXX $$(patsubst $$(PWD)/%,%,$$(CURDIR))/$$@
-	$$(CXX) $$(CFLAGS) $$(CXXFLAGS) -D __FILENAME__=\"$$(notdir $$<)\" -D __FILENAME_WO_SUFFIX__=\"$$(subst .c,,$$(notdir $$<))\" -D __FILENAME_WO_SUFFIX_DEQUOTED__=$$(subst .c,,$$(notdir $$<)) -D __COMPONENT_NAME__=\"$$(COMPONENT_NAME)\" -D __COMPONENT_NAME_DEQUOTED__=$$(COMPONENT_NAME) -D __COMPONENT_FILE_NAME__=\"$$(COMPONENT_NAME)$$(subst .c,,$$(notdir $$<))\" -D__COMPONENT_FILE_NAMED__=$$(COMPONENT_NAME).$$(subst .c,,$$(notdir $$<)) -D__COMPONENT_FILE_NAME_DEQUOTED__=$$(COMPONENT_NAME)$$(subst .c,,$$(notdir $$<)) $$(CPPFLAGS) $$(addprefix -I ,$$(COMPONENT_INCLUDES)) $$(addprefix -I ,$$(COMPONENT_EXTRA_INCLUDES)) -I $(1) -c $$(abspath $$<) -o $$@
+	$$(CXX) $$(CXXFLAGS) $$(CPPFLAGS) -D __FILENAME__=\"$$(notdir $$<)\" -D __FILENAME_WO_SUFFIX__=\"$$(subst .c,,$$(notdir $$<))\" -D __FILENAME_WO_SUFFIX_DEQUOTED__=$$(subst .c,,$$(notdir $$<)) -D __COMPONENT_NAME__=\"$$(COMPONENT_NAME)\" -D __COMPONENT_NAME_DEQUOTED__=$$(COMPONENT_NAME) -D __COMPONENT_FILE_NAME__=\"$$(COMPONENT_NAME)$$(subst .c,,$$(notdir $$<))\" -D__COMPONENT_FILE_NAMED__=$$(COMPONENT_NAME).$$(subst .c,,$$(notdir $$<)) -D__COMPONENT_FILE_NAME_DEQUOTED__=$$(COMPONENT_NAME)$$(subst .c,,$$(notdir $$<)) $$(CPPFLAGS) $$(addprefix -I ,$$(COMPONENT_INCLUDES)) $$(addprefix -I ,$$(COMPONENT_EXTRA_INCLUDES)) -I $(1) -c $$(abspath $$<) -o $$@
 	$(call AppendSourceToDependencies,$$<,$$@)
 
 $(2)/%.o: $$(COMPONENT_PATH)/$(1)/%.cc $(COMMON_MAKEFILES) $(COMPONENT_MAKEFILE) | $(COMPONENT_OBJDIRS)

make_scripts_riscv/project.mk

@@ -341,8 +341,11 @@ CFLAGS := $(strip \
 	-save-temps=obj
 
 CXXFLAGS := $(strip \
-	$(CPPFLAGS) \
-	$(OPTIMIZATION_FLAGS) \
+	-std=c++11 \
+	$(OPTIMIZATION_FLAGS) $(DEBUG_FLAGS) \
+	$(COMMON_FLAGS) \
+	$(COMMON_WARNING_FLAGS) \
+	$(CXXFLAGS) \
 	$(E21_CPU_CFLAGS) \
 	-nostdlib \
 	-g3 \
@@ -357,7 +360,9 @@ CXXFLAGS := $(strip \
 	-Wswitch-default \
 	-Wunused \
 	-Wundef \
-	-fno-rtti -fno-exceptions)
+	-fno-rtti -fno-exceptions \
+	-save-temps=obj \
+	)
 
 export CFLAGS CPPFLAGS CXXFLAGS ASMFLAGS