Files
c_soft/riscv/startup/test.c
2025-06-13 16:22:30 +08:00

149 lines
2.4 KiB
C

#include "stdint.h"
#include "head.h"
// 无符号大小比较
void test1(uint32_t a,uint32_t b){
if(a>b){
my_printf("%u>%u\n",a,b);
}else if(a<b){
my_printf("%u<%u\n",a,b);
}else{
my_printf("%u==%u\n",a,b);
}
}
// 有符号大小比较
void test2(int32_t a,int32_t b){
if(a>b){
my_printf("%d>%d\n",a,b);
}else if(a<b){
my_printf("%d<%d\n",a,b);
}else{
my_printf("%d==%d\n",a,b);
}
}
// uint16_t 大小比较
void test3(uint16_t a,uint16_t b){
if(a>b){
my_printf("%u>%u\n",a,b);
}else if(a<b){
my_printf("%u<%u\n",a,b);
}else{
my_printf("%u==%u\n",a,b);
}
}
void test4(int16_t a,int16_t b){
if(a>b){
my_printf("%d>%d\n",a,b);
}else if(a<b){
my_printf("%d<%d\n",a,b);
}else{
my_printf("%d==%d\n",a,b);
}
}
// uint8_t 大小比较
void test5(uint8_t a,uint8_t b){
if(a>b){
my_printf("%u>%u\n",a,b);
}else if(a<b){
my_printf("%u<%u\n",a,b);
}else{
my_printf("%u==%u\n",a,b);
}
}
void test6(int8_t a,int8_t b){
if(a>b){
my_printf("%d>%d\n",a,b);
}else if(a<b){
my_printf("%d<%d\n",a,b);
}else{
my_printf("%d==%d\n",a,b);
}
}
void test7(uint32_t a,int b){
my_printf("shift right %08x, %08x\n",a,a>>b);
}
void test8(int32_t a,int b){
my_printf("shift right %08x, %08x\n",a,a>>b);
}
void test9(uint16_t a,int b){
my_printf("shift right %08x, %08x\n",a,a>>b);
}
void test10(int16_t a,int b){
my_printf("shift right %08x, %08x\n",a,a>>b);
}
void test11(uint8_t a,int b){
my_printf("shift right %08x, %08x\n",a,a>>b);
}
void test12(int8_t a,int b){
my_printf("shift right %08x, %08x\n",a,a>>b);
}
int add(int a, int b) {
return a+b;
}
void cpu_test() {
my_printf("test 32 bit\n");
test1(1,2);
test1(1,-2);
test2(1,2);
test2(1,-2);
my_printf("test 16 bit\n");
test3(1,2);
test3(1,-2);
test4(1,2);
test4(1,-2);
my_printf("test 8 bit\n");
test5(1,2);
test5(1,-2);
test6(1,2);
test6(1,-2);
my_printf("shift test\n");
test7(0x80000000,7);
test8(0x80000000,7);
test9(0x8000,7);
test10(0x8000,7);
test11(0x80,7);
test12(0x80,7);
int a=1;
int b=2;
typedef void (*fun_t)(void);
fun_t fun = (fun_t)0;
set_csr(mstatus, 0x00000008);
fun();
int c = add(a, b);
my_printf("add(%d, %d)=%d\n", a, b, c);
a = 67;b = -78;
fun=(fun_t)0xff000000;
fun();
my_printf("mul(%d, %d)=%d\n", a, b, a * b);
my_printf("ram_val test: %s\n", "test string");
}