feat(syscall): 添加syscall table的实现 (#1164)

* feat(syscall): 添加syscall table的实现

- 实现syscall table
- 为syscall table适配write/writev、read和readv系统调用

---------

Signed-off-by: longjin <longjin@DragonOS.org>

user/apps/riscv_init/Makefile

@@ -8,14 +8,12 @@ CC=$(CROSS_COMPILE)gcc
 
 
 .PHONY: all
-all: main.c
-# $(CC) -static -o init main.c
+all: $(riscv_rust_init)
 	$(MAKE) -C riscv_rust_init ARCH=$(ARCH) install
 
 .PHONY: install clean
 install: all
 	$(MAKE) -C riscv_rust_init ARCH=$(ARCH) install
-# mv init $(DADK_CURRENT_BUILD_DIR)/init
 
 
 clean:

user/apps/riscv_init/main.c

@@ -1,9 +0,0 @@
-#include <stdio.h>
-
-int main() {
-  while(1){
-    printf("\033[43;37mHello, World!\033[0m\n");
-    sleep(1);
-  }
-  return 0;
-}