dd101c7ea3
device argument to the stage-1 bootloader. In such cases, boot1 would only try to read the entire device rather than checking for partitions. Instead of panic'ing, fall back to reading the partitions as normal in such situations. This was preventing boot of installed systems on some versions of PowerKVM. PR: kern/211599 MFC after: 2 days
778 lines
14 KiB
C
778 lines
14 KiB
C
/*-
|
|
* Copyright (c) 1998 Robert Nordier
|
|
* All rights reserved.
|
|
* Copyright (c) 2001 Robert Drehmel
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are freely
|
|
* permitted provided that the above copyright notice and this
|
|
* paragraph and the following disclaimer are duplicated in all
|
|
* such forms.
|
|
*
|
|
* This software is provided "AS IS" and without any express or
|
|
* implied warranties, including, without limitation, the implied
|
|
* warranties of merchantability and fitness for a particular
|
|
* purpose.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/dirent.h>
|
|
#include <machine/elf.h>
|
|
#include <machine/stdarg.h>
|
|
|
|
#include "paths.h"
|
|
|
|
#define BSIZEMAX 16384
|
|
|
|
typedef int putc_func_t(char c, void *arg);
|
|
typedef int32_t ofwh_t;
|
|
|
|
struct sp_data {
|
|
char *sp_buf;
|
|
u_int sp_len;
|
|
u_int sp_size;
|
|
};
|
|
|
|
static const char digits[] = "0123456789abcdef";
|
|
|
|
static char bootpath[128];
|
|
static char bootargs[128];
|
|
|
|
static ofwh_t bootdev;
|
|
|
|
static struct fs fs;
|
|
static char blkbuf[BSIZEMAX];
|
|
static unsigned int fsblks;
|
|
|
|
static uint32_t fs_off;
|
|
|
|
int main(int ac, char **av);
|
|
|
|
static void exit(int) __dead2;
|
|
static void load(const char *);
|
|
static int dskread(void *, u_int64_t, int);
|
|
|
|
static void usage(void);
|
|
|
|
static void bcopy(const void *src, void *dst, size_t len);
|
|
static void bzero(void *b, size_t len);
|
|
|
|
static int domount(const char *device, int quiet);
|
|
|
|
static void panic(const char *fmt, ...) __dead2;
|
|
static int printf(const char *fmt, ...);
|
|
static int putchar(char c, void *arg);
|
|
static int vprintf(const char *fmt, va_list ap);
|
|
static int vsnprintf(char *str, size_t sz, const char *fmt, va_list ap);
|
|
|
|
static int __printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap);
|
|
static int __putc(char c, void *arg);
|
|
static int __puts(const char *s, putc_func_t *putc, void *arg);
|
|
static int __sputc(char c, void *arg);
|
|
static char *__uitoa(char *buf, u_int val, int base);
|
|
static char *__ultoa(char *buf, u_long val, int base);
|
|
|
|
void __syncicache(void *, int);
|
|
|
|
/*
|
|
* Open Firmware interface functions
|
|
*/
|
|
typedef u_int32_t ofwcell_t;
|
|
typedef u_int32_t u_ofwh_t;
|
|
typedef int (*ofwfp_t)(void *);
|
|
ofwfp_t ofw; /* the prom Open Firmware entry */
|
|
ofwh_t chosenh;
|
|
|
|
void ofw_init(void *, int, int (*)(void *), char *, int);
|
|
static ofwh_t ofw_finddevice(const char *);
|
|
static ofwh_t ofw_open(const char *);
|
|
static int ofw_close(ofwh_t);
|
|
static int ofw_getprop(ofwh_t, const char *, void *, size_t);
|
|
static int ofw_setprop(ofwh_t, const char *, void *, size_t);
|
|
static int ofw_read(ofwh_t, void *, size_t);
|
|
static int ofw_write(ofwh_t, const void *, size_t);
|
|
static int ofw_claim(void *virt, size_t len, u_int align);
|
|
static int ofw_seek(ofwh_t, u_int64_t);
|
|
static void ofw_exit(void) __dead2;
|
|
|
|
ofwh_t bootdevh;
|
|
ofwh_t stdinh, stdouth;
|
|
|
|
__asm(" \n\
|
|
.data \n\
|
|
.align 4 \n\
|
|
stack: \n\
|
|
.space 16384 \n\
|
|
\n\
|
|
.text \n\
|
|
.globl _start \n\
|
|
_start: \n\
|
|
lis %r1,stack@ha \n\
|
|
addi %r1,%r1,stack@l \n\
|
|
addi %r1,%r1,8192 \n\
|
|
\n\
|
|
b ofw_init \n\
|
|
");
|
|
|
|
void
|
|
ofw_init(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
|
|
{
|
|
char *av[16];
|
|
char *p;
|
|
int ac;
|
|
|
|
ofw = openfirm;
|
|
|
|
chosenh = ofw_finddevice("/chosen");
|
|
ofw_getprop(chosenh, "stdin", &stdinh, sizeof(stdinh));
|
|
ofw_getprop(chosenh, "stdout", &stdouth, sizeof(stdouth));
|
|
ofw_getprop(chosenh, "bootargs", bootargs, sizeof(bootargs));
|
|
ofw_getprop(chosenh, "bootpath", bootpath, sizeof(bootpath));
|
|
|
|
bootargs[sizeof(bootargs) - 1] = '\0';
|
|
bootpath[sizeof(bootpath) - 1] = '\0';
|
|
|
|
p = bootpath;
|
|
while (*p != '\0') {
|
|
/* Truncate partition ID */
|
|
if (*p == ':') {
|
|
ofw_close(bootdev);
|
|
*(++p) = '\0';
|
|
break;
|
|
}
|
|
p++;
|
|
}
|
|
|
|
ac = 0;
|
|
p = bootargs;
|
|
for (;;) {
|
|
while (*p == ' ' && *p != '\0')
|
|
p++;
|
|
if (*p == '\0' || ac >= 16)
|
|
break;
|
|
av[ac++] = p;
|
|
while (*p != ' ' && *p != '\0')
|
|
p++;
|
|
if (*p != '\0')
|
|
*p++ = '\0';
|
|
}
|
|
|
|
exit(main(ac, av));
|
|
}
|
|
|
|
static ofwh_t
|
|
ofw_finddevice(const char *name)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"finddevice",
|
|
1,
|
|
1,
|
|
(ofwcell_t)name,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_finddevice: name=\"%s\"\n", name);
|
|
return (1);
|
|
}
|
|
return (args[4]);
|
|
}
|
|
|
|
static int
|
|
ofw_getprop(ofwh_t ofwh, const char *name, void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"getprop",
|
|
4,
|
|
1,
|
|
(u_ofwh_t)ofwh,
|
|
(ofwcell_t)name,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_getprop: ofwh=0x%x buf=%p len=%u\n",
|
|
ofwh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_setprop(ofwh_t ofwh, const char *name, void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"setprop",
|
|
4,
|
|
1,
|
|
(u_ofwh_t)ofwh,
|
|
(ofwcell_t)name,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_setprop: ofwh=0x%x buf=%p len=%u\n",
|
|
ofwh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static ofwh_t
|
|
ofw_open(const char *path)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"open",
|
|
1,
|
|
1,
|
|
(ofwcell_t)path,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_open: path=\"%s\"\n", path);
|
|
return (-1);
|
|
}
|
|
return (args[4]);
|
|
}
|
|
|
|
static int
|
|
ofw_close(ofwh_t devh)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"close",
|
|
1,
|
|
0,
|
|
(u_ofwh_t)devh
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_close: devh=0x%x\n", devh);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_claim(void *virt, size_t len, u_int align)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"claim",
|
|
3,
|
|
1,
|
|
(ofwcell_t)virt,
|
|
len,
|
|
align,
|
|
0,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_claim: virt=%p len=%u\n", virt, len);
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_read(ofwh_t devh, void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"read",
|
|
3,
|
|
1,
|
|
(u_ofwh_t)devh,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_read: devh=0x%x buf=%p len=%u\n", devh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_write(ofwh_t devh, const void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"write",
|
|
3,
|
|
1,
|
|
(u_ofwh_t)devh,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_write: devh=0x%x buf=%p len=%u\n", devh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_seek(ofwh_t devh, u_int64_t off)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"seek",
|
|
3,
|
|
1,
|
|
(u_ofwh_t)devh,
|
|
off >> 32,
|
|
off,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_seek: devh=0x%x off=0x%lx\n", devh, off);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ofw_exit(void)
|
|
{
|
|
ofwcell_t args[3];
|
|
|
|
args[0] = (ofwcell_t)"exit";
|
|
args[1] = 0;
|
|
args[2] = 0;
|
|
|
|
for (;;)
|
|
(*ofw)(args);
|
|
}
|
|
|
|
static void
|
|
bcopy(const void *src, void *dst, size_t len)
|
|
{
|
|
const char *s = src;
|
|
char *d = dst;
|
|
|
|
while (len-- != 0)
|
|
*d++ = *s++;
|
|
}
|
|
|
|
static void
|
|
memcpy(void *dst, const void *src, size_t len)
|
|
{
|
|
bcopy(src, dst, len);
|
|
}
|
|
|
|
static void
|
|
bzero(void *b, size_t len)
|
|
{
|
|
char *p = b;
|
|
|
|
while (len-- != 0)
|
|
*p++ = 0;
|
|
}
|
|
|
|
static int
|
|
strcmp(const char *s1, const char *s2)
|
|
{
|
|
for (; *s1 == *s2 && *s1; s1++, s2++)
|
|
;
|
|
return ((u_char)*s1 - (u_char)*s2);
|
|
}
|
|
|
|
#include "ufsread.c"
|
|
|
|
int
|
|
main(int ac, char **av)
|
|
{
|
|
const char *path;
|
|
char bootpath_full[255];
|
|
int i, len;
|
|
|
|
path = PATH_LOADER;
|
|
for (i = 0; i < ac; i++) {
|
|
switch (av[i][0]) {
|
|
case '-':
|
|
switch (av[i][1]) {
|
|
default:
|
|
usage();
|
|
}
|
|
break;
|
|
default:
|
|
path = av[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
printf(" \n>> FreeBSD/powerpc Open Firmware boot block\n"
|
|
" Boot path: %s\n"
|
|
" Boot loader: %s\n", bootpath, path);
|
|
|
|
len = 0;
|
|
while (bootpath[len] != '\0') len++;
|
|
|
|
memcpy(bootpath_full,bootpath,len+1);
|
|
|
|
if (bootpath_full[len-1] != ':') {
|
|
/* First try full volume */
|
|
if (domount(bootpath_full,1) == 0)
|
|
goto out;
|
|
|
|
/* Add a : so that we try partitions if that fails */
|
|
if (bootdev > 0)
|
|
ofw_close(bootdev);
|
|
bootpath_full[len] = ':';
|
|
len += 1;
|
|
}
|
|
|
|
/* Loop through first 16 partitions to find a UFS one */
|
|
for (i = 0; i < 16; i++) {
|
|
if (i < 10) {
|
|
bootpath_full[len] = i + '0';
|
|
bootpath_full[len+1] = '\0';
|
|
} else {
|
|
bootpath_full[len] = '1';
|
|
bootpath_full[len+1] = i - 10 + '0';
|
|
bootpath_full[len+2] = '\0';
|
|
}
|
|
|
|
if (domount(bootpath_full,1) >= 0)
|
|
break;
|
|
|
|
if (bootdev > 0)
|
|
ofw_close(bootdev);
|
|
}
|
|
|
|
if (i >= 16)
|
|
panic("domount");
|
|
|
|
out:
|
|
printf(" Boot volume: %s\n",bootpath_full);
|
|
ofw_setprop(chosenh, "bootargs", bootpath_full, len+2);
|
|
load(path);
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
printf("usage: boot device [/path/to/loader]\n");
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
exit(int code)
|
|
{
|
|
|
|
ofw_exit();
|
|
}
|
|
|
|
static struct dmadat __dmadat;
|
|
|
|
static int
|
|
domount(const char *device, int quiet)
|
|
{
|
|
|
|
dmadat = &__dmadat;
|
|
if ((bootdev = ofw_open(device)) == -1) {
|
|
printf("domount: can't open device\n");
|
|
return (-1);
|
|
}
|
|
if (fsread(0, NULL, 0)) {
|
|
if (!quiet)
|
|
printf("domount: can't read superblock\n");
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
load(const char *fname)
|
|
{
|
|
Elf32_Ehdr eh;
|
|
Elf32_Phdr ph;
|
|
caddr_t p;
|
|
ufs_ino_t ino;
|
|
int i;
|
|
|
|
if ((ino = lookup(fname)) == 0) {
|
|
printf("File %s not found\n", fname);
|
|
return;
|
|
}
|
|
if (fsread(ino, &eh, sizeof(eh)) != sizeof(eh)) {
|
|
printf("Can't read elf header\n");
|
|
return;
|
|
}
|
|
if (!IS_ELF(eh)) {
|
|
printf("Not an ELF file\n");
|
|
return;
|
|
}
|
|
for (i = 0; i < eh.e_phnum; i++) {
|
|
fs_off = eh.e_phoff + i * eh.e_phentsize;
|
|
if (fsread(ino, &ph, sizeof(ph)) != sizeof(ph)) {
|
|
printf("Can't read program header %d\n", i);
|
|
return;
|
|
}
|
|
if (ph.p_type != PT_LOAD)
|
|
continue;
|
|
fs_off = ph.p_offset;
|
|
p = (caddr_t)ph.p_vaddr;
|
|
ofw_claim(p,(ph.p_filesz > ph.p_memsz) ?
|
|
ph.p_filesz : ph.p_memsz,0);
|
|
if (fsread(ino, p, ph.p_filesz) != ph.p_filesz) {
|
|
printf("Can't read content of section %d\n", i);
|
|
return;
|
|
}
|
|
if (ph.p_filesz != ph.p_memsz)
|
|
bzero(p + ph.p_filesz, ph.p_memsz - ph.p_filesz);
|
|
__syncicache(p, ph.p_memsz);
|
|
}
|
|
ofw_close(bootdev);
|
|
(*(void (*)(void *, int, ofwfp_t, char *, int))eh.e_entry)(NULL, 0,
|
|
ofw,NULL,0);
|
|
}
|
|
|
|
static int
|
|
dskread(void *buf, u_int64_t lba, int nblk)
|
|
{
|
|
/*
|
|
* The Open Firmware should open the correct partition for us.
|
|
* That means, if we read from offset zero on an open instance handle,
|
|
* we should read from offset zero of that partition.
|
|
*/
|
|
ofw_seek(bootdev, lba * DEV_BSIZE);
|
|
ofw_read(bootdev, buf, nblk * DEV_BSIZE);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
panic(const char *fmt, ...)
|
|
{
|
|
char buf[128];
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
vsnprintf(buf, sizeof buf, fmt, ap);
|
|
printf("panic: %s\n", buf);
|
|
va_end(ap);
|
|
|
|
exit(1);
|
|
}
|
|
|
|
static int
|
|
printf(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start(ap, fmt);
|
|
ret = vprintf(fmt, ap);
|
|
va_end(ap);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
putchar(char c, void *arg)
|
|
{
|
|
char buf;
|
|
|
|
if (c == '\n') {
|
|
buf = '\r';
|
|
ofw_write(stdouth, &buf, 1);
|
|
}
|
|
buf = c;
|
|
ofw_write(stdouth, &buf, 1);
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
vprintf(const char *fmt, va_list ap)
|
|
{
|
|
int ret;
|
|
|
|
ret = __printf(fmt, putchar, 0, ap);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
vsnprintf(char *str, size_t sz, const char *fmt, va_list ap)
|
|
{
|
|
struct sp_data sp;
|
|
int ret;
|
|
|
|
sp.sp_buf = str;
|
|
sp.sp_len = 0;
|
|
sp.sp_size = sz;
|
|
ret = __printf(fmt, __sputc, &sp, ap);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
__printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap)
|
|
{
|
|
char buf[(sizeof(long) * 8) + 1];
|
|
char *nbuf;
|
|
u_long ul;
|
|
u_int ui;
|
|
int lflag;
|
|
int sflag;
|
|
char *s;
|
|
int pad;
|
|
int ret;
|
|
int c;
|
|
|
|
nbuf = &buf[sizeof buf - 1];
|
|
ret = 0;
|
|
while ((c = *fmt++) != 0) {
|
|
if (c != '%') {
|
|
ret += putc(c, arg);
|
|
continue;
|
|
}
|
|
lflag = 0;
|
|
sflag = 0;
|
|
pad = 0;
|
|
reswitch: c = *fmt++;
|
|
switch (c) {
|
|
case '#':
|
|
sflag = 1;
|
|
goto reswitch;
|
|
case '%':
|
|
ret += putc('%', arg);
|
|
break;
|
|
case 'c':
|
|
c = va_arg(ap, int);
|
|
ret += putc(c, arg);
|
|
break;
|
|
case 'd':
|
|
if (lflag == 0) {
|
|
ui = (u_int)va_arg(ap, int);
|
|
if (ui < (int)ui) {
|
|
ui = -ui;
|
|
ret += putc('-', arg);
|
|
}
|
|
s = __uitoa(nbuf, ui, 10);
|
|
} else {
|
|
ul = (u_long)va_arg(ap, long);
|
|
if (ul < (long)ul) {
|
|
ul = -ul;
|
|
ret += putc('-', arg);
|
|
}
|
|
s = __ultoa(nbuf, ul, 10);
|
|
}
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'l':
|
|
lflag = 1;
|
|
goto reswitch;
|
|
case 'o':
|
|
if (lflag == 0) {
|
|
ui = (u_int)va_arg(ap, u_int);
|
|
s = __uitoa(nbuf, ui, 8);
|
|
} else {
|
|
ul = (u_long)va_arg(ap, u_long);
|
|
s = __ultoa(nbuf, ul, 8);
|
|
}
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'p':
|
|
ul = (u_long)va_arg(ap, void *);
|
|
s = __ultoa(nbuf, ul, 16);
|
|
ret += __puts("0x", putc, arg);
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 's':
|
|
s = va_arg(ap, char *);
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'u':
|
|
if (lflag == 0) {
|
|
ui = va_arg(ap, u_int);
|
|
s = __uitoa(nbuf, ui, 10);
|
|
} else {
|
|
ul = va_arg(ap, u_long);
|
|
s = __ultoa(nbuf, ul, 10);
|
|
}
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'x':
|
|
if (lflag == 0) {
|
|
ui = va_arg(ap, u_int);
|
|
s = __uitoa(nbuf, ui, 16);
|
|
} else {
|
|
ul = va_arg(ap, u_long);
|
|
s = __ultoa(nbuf, ul, 16);
|
|
}
|
|
if (sflag)
|
|
ret += __puts("0x", putc, arg);
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case '0': case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
pad = pad * 10 + c - '0';
|
|
goto reswitch;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
__sputc(char c, void *arg)
|
|
{
|
|
struct sp_data *sp;
|
|
|
|
sp = arg;
|
|
if (sp->sp_len < sp->sp_size)
|
|
sp->sp_buf[sp->sp_len++] = c;
|
|
sp->sp_buf[sp->sp_len] = '\0';
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
__puts(const char *s, putc_func_t *putc, void *arg)
|
|
{
|
|
const char *p;
|
|
int ret;
|
|
|
|
ret = 0;
|
|
for (p = s; *p != '\0'; p++)
|
|
ret += putc(*p, arg);
|
|
return (ret);
|
|
}
|
|
|
|
static char *
|
|
__uitoa(char *buf, u_int ui, int base)
|
|
{
|
|
char *p;
|
|
|
|
p = buf;
|
|
*p = '\0';
|
|
do
|
|
*--p = digits[ui % base];
|
|
while ((ui /= base) != 0);
|
|
return (p);
|
|
}
|
|
|
|
static char *
|
|
__ultoa(char *buf, u_long ul, int base)
|
|
{
|
|
char *p;
|
|
|
|
p = buf;
|
|
*p = '\0';
|
|
do
|
|
*--p = digits[ul % base];
|
|
while ((ul /= base) != 0);
|
|
return (p);
|
|
}
|