optee打印二进制

1、将如下代码移植到你的c文件

#include 
#include 

char *strcat(char *dest, const char *src)
{
    char *tmp = dest;

    while (*dest)
        dest++;
    while ((*dest++ = *src++) != '\0');
    return tmp;
}

static void i_to_string(char *buf, char x)
{
	char shiwei = x /16;
	char gewei = x %16;
	
	buf[0] = ' ';
	buf[1] = shiwei >= 10 ? (shiwei - 10 + 'a') : (shiwei + '0');
	buf[2] = gewei >= 10 ? (gewei - 10 + 'a') : (gewei + '0');
	buf[3] = 0;
}

#define PRINT_BUF_MAX			(32)
#define TAG_STRING_MAX			(32)
static void print_step_hex_data(void *tag, void *pbuf, uint32_t len)
{
	int i;
	char buf[PRINT_BUF_MAX*4 + TAG_STRING_MAX] = {0};
	char temp_buf[4] = "HHH";

	memcpy(buf, (char *)tag, sizeof(buf));

	for (i=0;i<len;i++) {
		if (i % 16 ==0) {
			strcat(buf,"\n");
		}
		i_to_string(temp_buf, *((char *)pbuf + i)&0xff);
		strcat(buf, temp_buf);
	}
	strcat(buf,"\n");

	EMSG("%s", buf);
}

void print_hex_data(void *tag, void *pbuf, uint32_t len)
{
	int i;
	uint32_t block;
	uint32_t remainder;
	void *p;
	char tag_buf[TAG_STRING_MAX + 6] = {0};
	char tail_buf[6+4] = {0};

	p = pbuf;
	if (len<=PRINT_BUF_MAX) {
		memcpy(tag_buf,tag,TAG_STRING_MAX);
		strcat(tag_buf, " = ");
		return print_step_hex_data(tag_buf, p, len);
	} else {
		block = len / PRINT_BUF_MAX;
		remainder = len % PRINT_BUF_MAX;
		for (i=0;i<block;i++) {
			memcpy(tag_buf,tag,TAG_STRING_MAX);
			tail_buf[0] = '[';
			tail_buf[1] = i / 10 + '0';
			tail_buf[2] = i % 10 + '0';
			tail_buf[3] = ']';
			tail_buf[4] = 0;
			strcat(tag_buf, tail_buf);
			print_step_hex_data(tag_buf, p, PRINT_BUF_MAX);
			p = (char *)p + PRINT_BUF_MAX;
		}
		if (remainder) {
			memcpy(tag_buf,tag,TAG_STRING_MAX);
			tail_buf[0] = '[';
			tail_buf[1] = i / 10 + '0';
			tail_buf[2] = i % 10 + '0';
			tail_buf[3] = ']';
			tail_buf[4] = 0;
			strcat(tag_buf, tail_buf);
			print_step_hex_data(tag_buf, p, remainder);
		}
	}
}

2、 打印二进制的方法如下所示
print_hex_data("Cipher Data : ", tmp_buf, tmp_sz);
print_hex_data("Plaintext Data : ", out_buf, out_sz);