7 /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
9  * Wirzenius wrote this portably, Torvalds fucked it up :-)
11  * from hush: simple_itoa() was lifted from boa-0.93.15
36 		i = i * 10 + *((*s)++) - '0';  in skip_atoi()
50  * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */
60 	d0 = d0 - 10*q;  in put_dec_trunc()
65 		d1 = d1 - 10*q;  in put_dec_trunc()
71 			d2 = d2 - 10*q;  in put_dec_trunc()
77 				d3 = d3 - 10*q;  in put_dec_trunc()
89 	/* BTW, if q is in [0,9999], 8-bit ints will be enough, */  in put_dec_full()
90 	/* but anyway, gcc produces better code with full-sized ints */  in put_dec_full()
98 	 * gcc -O2 replaces multiply with shifts and adds  in put_dec_full()
99 	 * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386)  in put_dec_full()
101 	 * (x * 0x34) >> 9:    110100 - same  in put_dec_full()
102 	 * (x * 0x1a) >> 8:     11010 - same  in put_dec_full()
103 	 * (x * 0x0d) >> 7:      1101 - same, shortest code (on i386)  in put_dec_full()
108 	d0 = d0 - 10*q;  in put_dec_full()
112 		d1 = d1 - 10*q;  in put_dec_full()
117 			d2 = d2 - 10*q;  in put_dec_full()
121 				q = (d3 * 0xcd) >> 11; /* - shorter code */  in put_dec_full()
122 				/* q = (d3 * 0x67) >> 10; - would also work */  in put_dec_full()
123 				d3 = d3 - 10*q;  in put_dec_full()
129 static noinline char *put_dec(char *buf, uint64_t num)  in put_dec()  argument
133 		if (num < 100000)  in put_dec()
134 			return put_dec_trunc(buf, num);  in put_dec()
135 		rem = do_div(num, 100000);  in put_dec()
158 static char *number(char *buf, char *end, u64 num,  in number()  argument
177 		if ((s64) num < 0) {  in number()
178 			sign = '-';  in number()
179 			num = -(s64) num;  in number()
180 			size--;  in number()
183 			size--;  in number()
186 			size--;  in number()
190 		size--;  in number()
192 			size--;  in number()
197 	if (num == 0)  in number()
201 		tmp[i++] = (digits[do_div(num,base)] | locase);  in number()
202 	} while (num != 0);  in number()
205 		int mask = base - 1;  in number()
212 			tmp[i++] = (digits[((unsigned char)num) & mask]  in number()
214 			num >>= shift;  in number()
215 		} while (num);  in number()
217 		i = put_dec(tmp, num) - tmp;  in number()
224 	size -= precision;  in number()
226 		while (--size >= 0)  in number()
242 		while (--size >= 0)  in number()
246 	while (i <= --precision)  in number()
249 	while (--i >= 0)  in number()
252 	while (--size >= 0)  in number()
268 		while (len < field_width--)  in string()
272 	while (len < field_width--)  in string()
277 /* U-Boot uses UTF-16 strings in the EFI context only. */
286 		for (; len < field_width; --field_width)  in string16()
295 	for (; len < field_width; --field_width)  in string16()
311 		return ERR_PTR(-ENOMEM);  in device_path_string()
369 		digits = put_dec_trunc(temp, addr[i]) - temp;  in ip4_addr_string()
371 		while (digits--)  in ip4_addr_string()
386  * print lower-case (ie. we just keep %pUB and %pUL for compat with linux),
389  *   %pUb:   01020304-0506-0708-090a-0b0c0d0e0f10
390  *   %pUl:   04030201-0605-0807-090a-0b0c0d0e0f10
427  * - 'M' For a 6-byte MAC address, it prints the address in the
428  *       usual colon-separated hex notation
429  * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated
430  *       decimal for v4 and colon separated network-order 16 bit hex for v6)
431  * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is
441 	u64 num = (uintptr_t)ptr;  in pointer()  local
468 			num = *(phys_addr_t *)ptr;  in pointer()
500 	if (field_width == -1) {  in pointer()
504 	return number(buf, end, num, 16, field_width, precision, flags);  in pointer()
510 	u64 num;  in vsnprintf_internal()  local
521 				/* 'z' changed to 'Z' --davidm 1/25/99 */  in vsnprintf_internal()
525 	/* Make sure end is always >= buf - do we want this in U-Boot? */  in vsnprintf_internal()
527 		end = ((void *)-1);  in vsnprintf_internal()
528 		size = end - buf;  in vsnprintf_internal()
543 			case '-':  in vsnprintf_internal()
561 		field_width = -1;  in vsnprintf_internal()
569 				field_width = -field_width;  in vsnprintf_internal()
575 		precision = -1;  in vsnprintf_internal()
590 		qualifier = -1;  in vsnprintf_internal()
607 				while (--field_width > 0)  in vsnprintf_internal()
611 			while (--field_width > 0)  in vsnprintf_internal()
616 /* U-Boot uses UTF-16 strings in the EFI context only. */  in vsnprintf_internal()
643 				*ip = (str - buf);  in vsnprintf_internal()
646 				*ip = (str - buf);  in vsnprintf_internal()
654 		/* integer number formats - set up the flags and "break" */  in vsnprintf_internal()
676 				--fmt;  in vsnprintf_internal()
680 			num = va_arg(args, unsigned long long);  in vsnprintf_internal()
682 			num = va_arg(args, unsigned long);  in vsnprintf_internal()
684 				num = (signed long) num;  in vsnprintf_internal()
686 			num = va_arg(args, size_t);  in vsnprintf_internal()
688 			num = va_arg(args, ptrdiff_t);  in vsnprintf_internal()
690 			num = (unsigned short) va_arg(args, int);  in vsnprintf_internal()
692 				num = (signed short) num;  in vsnprintf_internal()
694 			num = va_arg(args, unsigned int);  in vsnprintf_internal()
696 				num = (signed int) num;  in vsnprintf_internal()
698 		str = number(str, end, num, base, field_width, precision,  in vsnprintf_internal()
705 			end[-1] = '\0';  in vsnprintf_internal()
706 		--str;  in vsnprintf_internal()
709 	return str - buf;  in vsnprintf_internal()
727 		return size - 1;  in vscnprintf()
830 	/* 21 digits plus null terminator, good for 64-bit or smaller ints */  in simple_itoa()
834 	*p-- = '\0';  in simple_itoa()
836 		*p-- = '0' + i % 10;  in simple_itoa()
842 /* We don't seem to have %'d in U-Boot */
852 			putc(s[-1] != ' ' ? ',' : ' ');  in print_grouped_ull()
858 bool str2off(const char *p, loff_t *num)  in str2off()  argument
862 	*num = simple_strtoull(p, &endptr, 16);  in str2off()
866 bool str2long(const char *p, ulong *num)  in str2long()  argument
870 	*num = simple_strtoul(p, &endptr, 16);  in str2long()