两个调试打印函数

来源：互联网发布：淘宝如何解绑银行卡编辑：程序博客网时间：2024/05/15 23:46

(一) 应用层调试打印

#if 1

#define isprint(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'))

static inline void br_dump_raw (const unsigned char *buf, unsigned len)

{

int i;

char lbuf [80];

int lbix = 0;

1 2 3 4 5 6 7

01234567890123456789012345678901234567890123456789012345678901234567890123

280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 .................

memset(lbuf, ' ', 79);

lbuf [79] = 0;

for (i = 0; i < len; i++) {

if ((i & 15) == 0) {

if (lbix) {

lbuf[53]=' ';

lbuf[54]=' ';

lbuf[55]=' ';

lbuf[73]='\0';

printf ("%s\n", lbuf);

}

memset(lbuf, ' ', 79);

lbuf [79] = 0;

sprintf (lbuf, "%03x:", i);

lbix = 4;

} else if ((i & 7) == 0)

lbuf [lbix++] = ' ';

if(isprint(buf[i])) {

lbuf[56+(i%16)]=buf[i];

} else {

lbuf[56+(i%16)]='.';

}

sprintf (&lbuf [lbix], " %02x", buf [i]);

lbix += 3;

lbuf[lbix]=' ';

}

lbuf[53]=' ';

lbuf[54]=' ';

lbuf[55]=' ';

lbuf[73]='\0';

printf ("%s\n", lbuf);

}

#endif

(二) 内核调试打印

print_hex_dump(KERN_EMERG, "ROOT_FS:", DUMP_PREFIX_OFFSET, 16, 1,

buf, len, 1);