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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:05 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:04 +0200 |
commit | 78acc472d9719316f22e002a009a998d9ceec29d (patch) | |
tree | aa99461b3d693cf3691869abea485091860a66d0 /lib_generic/vsprintf.c | |
parent | ea0364f1bbfed1e3ea711147420875cf338fe77a (diff) | |
download | u-boot-imx-78acc472d9719316f22e002a009a998d9ceec29d.zip u-boot-imx-78acc472d9719316f22e002a009a998d9ceec29d.tar.gz u-boot-imx-78acc472d9719316f22e002a009a998d9ceec29d.tar.bz2 |
Rename lib_generic/ to lib/
Now that the other architecture-specific lib directories have been
moved out of the top-level directory there's not much reason to have the
'_generic' suffix on the common lib directory.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'lib_generic/vsprintf.c')
-rw-r--r-- | lib_generic/vsprintf.c | 681 |
1 files changed, 0 insertions, 681 deletions
diff --git a/lib_generic/vsprintf.c b/lib_generic/vsprintf.c deleted file mode 100644 index 8c58a93..0000000 --- a/lib_generic/vsprintf.c +++ /dev/null @@ -1,681 +0,0 @@ -/* - * linux/lib/vsprintf.c - * - * Copyright (C) 1991, 1992 Linus Torvalds - */ - -/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */ -/* - * Wirzenius wrote this portably, Torvalds fucked it up :-) - */ - -#include <stdarg.h> -#include <linux/types.h> -#include <linux/string.h> -#include <linux/ctype.h> - -#include <common.h> -#if !defined (CONFIG_PANIC_HANG) -#include <command.h> -/*cmd_boot.c*/ -extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); -#endif - -#include <div64.h> -# define NUM_TYPE long long -#define noinline __attribute__((noinline)) - -const char hex_asc[] = "0123456789abcdef"; -#define hex_asc_lo(x) hex_asc[((x) & 0x0f)] -#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] - -static inline char *pack_hex_byte(char *buf, u8 byte) -{ - *buf++ = hex_asc_hi(byte); - *buf++ = hex_asc_lo(byte); - return buf; -} - -unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base) -{ - unsigned long result = 0,value; - - if (*cp == '0') { - cp++; - if ((*cp == 'x') && isxdigit(cp[1])) { - base = 16; - cp++; - } - if (!base) { - base = 8; - } - } - if (!base) { - base = 10; - } - while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp) - ? toupper(*cp) : *cp)-'A'+10) < base) { - result = result*base + value; - cp++; - } - if (endp) - *endp = (char *)cp; - return result; -} - -long simple_strtol(const char *cp,char **endp,unsigned int base) -{ - if(*cp=='-') - return -simple_strtoul(cp+1,endp,base); - return simple_strtoul(cp,endp,base); -} - -int ustrtoul(const char *cp, char **endp, unsigned int base) -{ - unsigned long result = simple_strtoul(cp, endp, base); - switch (**endp) { - case 'G' : - result *= 1024; - /* fall through */ - case 'M': - result *= 1024; - /* fall through */ - case 'K': - case 'k': - result *= 1024; - if ((*endp)[1] == 'i') { - if ((*endp)[2] == 'B') - (*endp) += 3; - else - (*endp) += 2; - } - } - return result; -} - -unsigned long long simple_strtoull (const char *cp, char **endp, unsigned int base) -{ - unsigned long long result = 0, value; - - if (*cp == '0') { - cp++; - if ((*cp == 'x') && isxdigit (cp[1])) { - base = 16; - cp++; - } - if (!base) { - base = 8; - } - } - if (!base) { - base = 10; - } - while (isxdigit (*cp) && (value = isdigit (*cp) - ? *cp - '0' - : (islower (*cp) ? toupper (*cp) : *cp) - 'A' + 10) < base) { - result = result * base + value; - cp++; - } - if (endp) - *endp = (char *) cp; - return result; -} - -/* we use this so that we can do without the ctype library */ -#define is_digit(c) ((c) >= '0' && (c) <= '9') - -static int skip_atoi(const char **s) -{ - int i=0; - - while (is_digit(**s)) - i = i*10 + *((*s)++) - '0'; - return i; -} - -/* Decimal conversion is by far the most typical, and is used - * for /proc and /sys data. This directly impacts e.g. top performance - * with many processes running. We optimize it for speed - * using code from - * http://www.cs.uiowa.edu/~jones/bcd/decimal.html - * (with permission from the author, Douglas W. Jones). */ - -/* Formats correctly any integer in [0,99999]. - * Outputs from one to five digits depending on input. - * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */ -static char* put_dec_trunc(char *buf, unsigned q) -{ - unsigned d3, d2, d1, d0; - d1 = (q>>4) & 0xf; - d2 = (q>>8) & 0xf; - d3 = (q>>12); - - d0 = 6*(d3 + d2 + d1) + (q & 0xf); - q = (d0 * 0xcd) >> 11; - d0 = d0 - 10*q; - *buf++ = d0 + '0'; /* least significant digit */ - d1 = q + 9*d3 + 5*d2 + d1; - if (d1 != 0) { - q = (d1 * 0xcd) >> 11; - d1 = d1 - 10*q; - *buf++ = d1 + '0'; /* next digit */ - - d2 = q + 2*d2; - if ((d2 != 0) || (d3 != 0)) { - q = (d2 * 0xd) >> 7; - d2 = d2 - 10*q; - *buf++ = d2 + '0'; /* next digit */ - - d3 = q + 4*d3; - if (d3 != 0) { - q = (d3 * 0xcd) >> 11; - d3 = d3 - 10*q; - *buf++ = d3 + '0'; /* next digit */ - if (q != 0) - *buf++ = q + '0'; /* most sign. digit */ - } - } - } - return buf; -} -/* Same with if's removed. Always emits five digits */ -static char* put_dec_full(char *buf, unsigned q) -{ - /* BTW, if q is in [0,9999], 8-bit ints will be enough, */ - /* but anyway, gcc produces better code with full-sized ints */ - unsigned d3, d2, d1, d0; - d1 = (q>>4) & 0xf; - d2 = (q>>8) & 0xf; - d3 = (q>>12); - - /* - * Possible ways to approx. divide by 10 - * gcc -O2 replaces multiply with shifts and adds - * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386) - * (x * 0x67) >> 10: 1100111 - * (x * 0x34) >> 9: 110100 - same - * (x * 0x1a) >> 8: 11010 - same - * (x * 0x0d) >> 7: 1101 - same, shortest code (on i386) - */ - - d0 = 6*(d3 + d2 + d1) + (q & 0xf); - q = (d0 * 0xcd) >> 11; - d0 = d0 - 10*q; - *buf++ = d0 + '0'; - d1 = q + 9*d3 + 5*d2 + d1; - q = (d1 * 0xcd) >> 11; - d1 = d1 - 10*q; - *buf++ = d1 + '0'; - - d2 = q + 2*d2; - q = (d2 * 0xd) >> 7; - d2 = d2 - 10*q; - *buf++ = d2 + '0'; - - d3 = q + 4*d3; - q = (d3 * 0xcd) >> 11; /* - shorter code */ - /* q = (d3 * 0x67) >> 10; - would also work */ - d3 = d3 - 10*q; - *buf++ = d3 + '0'; - *buf++ = q + '0'; - return buf; -} -/* No inlining helps gcc to use registers better */ -static noinline char* put_dec(char *buf, unsigned NUM_TYPE num) -{ - while (1) { - unsigned rem; - if (num < 100000) - return put_dec_trunc(buf, num); - rem = do_div(num, 100000); - buf = put_dec_full(buf, rem); - } -} - -#define ZEROPAD 1 /* pad with zero */ -#define SIGN 2 /* unsigned/signed long */ -#define PLUS 4 /* show plus */ -#define SPACE 8 /* space if plus */ -#define LEFT 16 /* left justified */ -#define SMALL 32 /* Must be 32 == 0x20 */ -#define SPECIAL 64 /* 0x */ - -static char *number(char *buf, unsigned NUM_TYPE num, int base, int size, int precision, int type) -{ - /* we are called with base 8, 10 or 16, only, thus don't need "G..." */ - static const char digits[16] = "0123456789ABCDEF"; /* "GHIJKLMNOPQRSTUVWXYZ"; */ - - char tmp[66]; - char sign; - char locase; - int need_pfx = ((type & SPECIAL) && base != 10); - int i; - - /* locase = 0 or 0x20. ORing digits or letters with 'locase' - * produces same digits or (maybe lowercased) letters */ - locase = (type & SMALL); - if (type & LEFT) - type &= ~ZEROPAD; - sign = 0; - if (type & SIGN) { - if ((signed NUM_TYPE) num < 0) { - sign = '-'; - num = - (signed NUM_TYPE) num; - size--; - } else if (type & PLUS) { - sign = '+'; - size--; - } else if (type & SPACE) { - sign = ' '; - size--; - } - } - if (need_pfx) { - size--; - if (base == 16) - size--; - } - - /* generate full string in tmp[], in reverse order */ - i = 0; - if (num == 0) - tmp[i++] = '0'; - /* Generic code, for any base: - else do { - tmp[i++] = (digits[do_div(num,base)] | locase); - } while (num != 0); - */ - else if (base != 10) { /* 8 or 16 */ - int mask = base - 1; - int shift = 3; - if (base == 16) shift = 4; - do { - tmp[i++] = (digits[((unsigned char)num) & mask] | locase); - num >>= shift; - } while (num); - } else { /* base 10 */ - i = put_dec(tmp, num) - tmp; - } - - /* printing 100 using %2d gives "100", not "00" */ - if (i > precision) - precision = i; - /* leading space padding */ - size -= precision; - if (!(type & (ZEROPAD+LEFT))) - while(--size >= 0) - *buf++ = ' '; - /* sign */ - if (sign) - *buf++ = sign; - /* "0x" / "0" prefix */ - if (need_pfx) { - *buf++ = '0'; - if (base == 16) - *buf++ = ('X' | locase); - } - /* zero or space padding */ - if (!(type & LEFT)) { - char c = (type & ZEROPAD) ? '0' : ' '; - while (--size >= 0) - *buf++ = c; - } - /* hmm even more zero padding? */ - while (i <= --precision) - *buf++ = '0'; - /* actual digits of result */ - while (--i >= 0) - *buf++ = tmp[i]; - /* trailing space padding */ - while (--size >= 0) - *buf++ = ' '; - return buf; -} - -static char *string(char *buf, char *s, int field_width, int precision, int flags) -{ - int len, i; - - if (s == 0) - s = "<NULL>"; - - len = strnlen(s, precision); - - if (!(flags & LEFT)) - while (len < field_width--) - *buf++ = ' '; - for (i = 0; i < len; ++i) - *buf++ = *s++; - while (len < field_width--) - *buf++ = ' '; - return buf; -} - -#ifdef CONFIG_CMD_NET -static char *mac_address_string(char *buf, u8 *addr, int field_width, - int precision, int flags) -{ - char mac_addr[6 * 3]; /* (6 * 2 hex digits), 5 colons and trailing zero */ - char *p = mac_addr; - int i; - - for (i = 0; i < 6; i++) { - p = pack_hex_byte(p, addr[i]); - if (!(flags & SPECIAL) && i != 5) - *p++ = ':'; - } - *p = '\0'; - - return string(buf, mac_addr, field_width, precision, flags & ~SPECIAL); -} - -static char *ip6_addr_string(char *buf, u8 *addr, int field_width, - int precision, int flags) -{ - char ip6_addr[8 * 5]; /* (8 * 4 hex digits), 7 colons and trailing zero */ - char *p = ip6_addr; - int i; - - for (i = 0; i < 8; i++) { - p = pack_hex_byte(p, addr[2 * i]); - p = pack_hex_byte(p, addr[2 * i + 1]); - if (!(flags & SPECIAL) && i != 7) - *p++ = ':'; - } - *p = '\0'; - - return string(buf, ip6_addr, field_width, precision, flags & ~SPECIAL); -} - -static char *ip4_addr_string(char *buf, u8 *addr, int field_width, - int precision, int flags) -{ - char ip4_addr[4 * 4]; /* (4 * 3 decimal digits), 3 dots and trailing zero */ - char temp[3]; /* hold each IP quad in reverse order */ - char *p = ip4_addr; - int i, digits; - - for (i = 0; i < 4; i++) { - digits = put_dec_trunc(temp, addr[i]) - temp; - /* reverse the digits in the quad */ - while (digits--) - *p++ = temp[digits]; - if (i != 3) - *p++ = '.'; - } - *p = '\0'; - - return string(buf, ip4_addr, field_width, precision, flags & ~SPECIAL); -} -#endif - -/* - * Show a '%p' thing. A kernel extension is that the '%p' is followed - * by an extra set of alphanumeric characters that are extended format - * specifiers. - * - * Right now we handle: - * - * - 'M' For a 6-byte MAC address, it prints the address in the - * usual colon-separated hex notation - * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated - * decimal for v4 and colon separated network-order 16 bit hex for v6) - * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is - * currently the same - * - * Note: The difference between 'S' and 'F' is that on ia64 and ppc64 - * function pointers are really function descriptors, which contain a - * pointer to the real address. - */ -static char *pointer(const char *fmt, char *buf, void *ptr, int field_width, int precision, int flags) -{ - if (!ptr) - return string(buf, "(null)", field_width, precision, flags); - -#ifdef CONFIG_CMD_NET - switch (*fmt) { - case 'm': - flags |= SPECIAL; - /* Fallthrough */ - case 'M': - return mac_address_string(buf, ptr, field_width, precision, flags); - case 'i': - flags |= SPECIAL; - /* Fallthrough */ - case 'I': - if (fmt[1] == '6') - return ip6_addr_string(buf, ptr, field_width, precision, flags); - if (fmt[1] == '4') - return ip4_addr_string(buf, ptr, field_width, precision, flags); - flags &= ~SPECIAL; - break; - } -#endif - flags |= SMALL; - if (field_width == -1) { - field_width = 2*sizeof(void *); - flags |= ZEROPAD; - } - return number(buf, (unsigned long) ptr, 16, field_width, precision, flags); -} - -/** - * vsprintf - Format a string and place it in a buffer - * @buf: The buffer to place the result into - * @fmt: The format string to use - * @args: Arguments for the format string - * - * This function follows C99 vsprintf, but has some extensions: - * %pS output the name of a text symbol - * %pF output the name of a function pointer - * %pR output the address range in a struct resource - * - * The function returns the number of characters written - * into @buf. - * - * Call this function if you are already dealing with a va_list. - * You probably want sprintf() instead. - */ -int vsprintf(char *buf, const char *fmt, va_list args) -{ - unsigned NUM_TYPE num; - int base; - char *str; - - int flags; /* flags to number() */ - - int field_width; /* width of output field */ - int precision; /* min. # of digits for integers; max - number of chars for from string */ - int qualifier; /* 'h', 'l', or 'L' for integer fields */ - /* 'z' support added 23/7/1999 S.H. */ - /* 'z' changed to 'Z' --davidm 1/25/99 */ - /* 't' added for ptrdiff_t */ - - str = buf; - - for (; *fmt ; ++fmt) { - if (*fmt != '%') { - *str++ = *fmt; - continue; - } - - /* process flags */ - flags = 0; - repeat: - ++fmt; /* this also skips first '%' */ - switch (*fmt) { - case '-': flags |= LEFT; goto repeat; - case '+': flags |= PLUS; goto repeat; - case ' ': flags |= SPACE; goto repeat; - case '#': flags |= SPECIAL; goto repeat; - case '0': flags |= ZEROPAD; goto repeat; - } - - /* get field width */ - field_width = -1; - if (is_digit(*fmt)) - field_width = skip_atoi(&fmt); - else if (*fmt == '*') { - ++fmt; - /* it's the next argument */ - field_width = va_arg(args, int); - if (field_width < 0) { - field_width = -field_width; - flags |= LEFT; - } - } - - /* get the precision */ - precision = -1; - if (*fmt == '.') { - ++fmt; - if (is_digit(*fmt)) - precision = skip_atoi(&fmt); - else if (*fmt == '*') { - ++fmt; - /* it's the next argument */ - precision = va_arg(args, int); - } - if (precision < 0) - precision = 0; - } - - /* get the conversion qualifier */ - qualifier = -1; - if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || - *fmt == 'Z' || *fmt == 'z' || *fmt == 't') { - qualifier = *fmt; - ++fmt; - if (qualifier == 'l' && *fmt == 'l') { - qualifier = 'L'; - ++fmt; - } - } - - /* default base */ - base = 10; - - switch (*fmt) { - case 'c': - if (!(flags & LEFT)) - while (--field_width > 0) - *str++ = ' '; - *str++ = (unsigned char) va_arg(args, int); - while (--field_width > 0) - *str++ = ' '; - continue; - - case 's': - str = string(str, va_arg(args, char *), field_width, precision, flags); - continue; - - case 'p': - str = pointer(fmt+1, str, - va_arg(args, void *), - field_width, precision, flags); - /* Skip all alphanumeric pointer suffixes */ - while (isalnum(fmt[1])) - fmt++; - continue; - - case 'n': - if (qualifier == 'l') { - long * ip = va_arg(args, long *); - *ip = (str - buf); - } else { - int * ip = va_arg(args, int *); - *ip = (str - buf); - } - continue; - - case '%': - *str++ = '%'; - continue; - - /* integer number formats - set up the flags and "break" */ - case 'o': - base = 8; - break; - - case 'x': - flags |= SMALL; - case 'X': - base = 16; - break; - - case 'd': - case 'i': - flags |= SIGN; - case 'u': - break; - - default: - *str++ = '%'; - if (*fmt) - *str++ = *fmt; - else - --fmt; - continue; - } - if (qualifier == 'L') /* "quad" for 64 bit variables */ - num = va_arg(args, unsigned long long); - else if (qualifier == 'l') { - num = va_arg(args, unsigned long); - if (flags & SIGN) - num = (signed long) num; - } else if (qualifier == 'Z' || qualifier == 'z') { - num = va_arg(args, size_t); - } else if (qualifier == 't') { - num = va_arg(args, ptrdiff_t); - } else if (qualifier == 'h') { - num = (unsigned short) va_arg(args, int); - if (flags & SIGN) - num = (signed short) num; - } else { - num = va_arg(args, unsigned int); - if (flags & SIGN) - num = (signed int) num; - } - str = number(str, num, base, field_width, precision, flags); - } - *str = '\0'; - return str-buf; -} - -/** - * sprintf - Format a string and place it in a buffer - * @buf: The buffer to place the result into - * @fmt: The format string to use - * @...: Arguments for the format string - * - * The function returns the number of characters written - * into @buf. - * - * See the vsprintf() documentation for format string extensions over C99. - */ -int sprintf(char * buf, const char *fmt, ...) -{ - va_list args; - int i; - - va_start(args, fmt); - i=vsprintf(buf,fmt,args); - va_end(args); - return i; -} - -void panic(const char *fmt, ...) -{ - va_list args; - va_start(args, fmt); - vprintf(fmt, args); - putc('\n'); - va_end(args); -#if defined (CONFIG_PANIC_HANG) - hang(); -#else - udelay (100000); /* allow messages to go out */ - do_reset (NULL, 0, 0, NULL); -#endif -} |