initial commit

sdk/software/examples/hello_world/Makefile

@@ -0,0 +1,11 @@
+TARGET = hello_world
+
+CFLAGS += -O3 -g
+
+C_SRCS := $(wildcard ./*.c )
+
+OBJDIR = obj
+COMMON_DIR = ../../bsp
+GCC_DIR=../../../toolchains/loongson-gnu-toolchain-8.3-x86_64-loongarch32r-linux-gnusf-v2.0
+PICOLIBC_DIR=../../../toolchains/picolibc
+include ../../bsp/common.mk

sdk/software/examples/hello_world/main.c

@@ -0,0 +1,36 @@
+#include <stdio.h> 
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+//BSP板级支持包所需全局变量
+unsigned long UART_BASE = 0xbf000000;					//UART16550的虚地址
+unsigned long CONFREG_TIMER_BASE = 0xbf20f100;			//CONFREG计数器的虚地址
+unsigned long CONFREG_CLOCKS_PER_SEC = 50000000L;		//CONFREG时钟频率
+unsigned long CORE_CLOCKS_PER_SEC = 33000000L;			//处理器核时钟频率
+
+#define CPSIZE 12
+char src[CPSIZE] = "this is src";
+char dst[CPSIZE] = "this is dst";
+
+int main(int argc, char** argv)
+{
+	int a = 100;
+	float b = 3.2564;
+	double c = 5478.47563;
+	char *str;
+
+	printf("Hello Loongarch32r!\n");
+	printf("a = %d\n",  a);
+	printf("b = %f\n",  b);
+	printf("c = %lf\n", c);
+
+    str = (char *)malloc(6);
+    strcpy(str, "ABCDE");
+    printf("String = %s,  Address = 0x%x\n", str, str);
+
+	memcpy(dst, src, CPSIZE);
+    printf("%s\n", dst);
+  
+	return 0;
+}