OpenCores
URL https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk

Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [orpsocv2/] [sw/] [lib/] [printf.c] - Diff between revs 349 and 393

Go to most recent revision | Show entire file | Details | Blame | View Log

Rev 349 Rev 393
Line 1... Line 1...
 
// Ripped out of latest ecos build from 
 
//http://sources-redhat.mirrors.airband.net/ecos/releases/ecos-3.0b1/ecos-3.0beta1.i386linux.tar.bz2
 
// File: ecos-3.0b1/packages/language/c/libc/stdio/v3_0b1/src/output/vfnprintf.cxx
 
 
 
//  Hacked to pieces so it would work with OpenRISC compiler, not using libc
 
//===========================================================================
 
//
 
//      vfnprintf.c
 
//
 
//      I/O routines for vfnprintf() for use with ANSI C library
 
//
 
//===========================================================================
 
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
 
// -------------------------------------------                              
 
// This file is part of eCos, the Embedded Configurable Operating System.   
 
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
 
//
 
// eCos is free software; you can redistribute it and/or modify it under    
 
// the terms of the GNU General Public License as published by the Free     
 
// Software Foundation; either version 2 or (at your option) any later      
 
// version.                                                                 
 
//
 
// eCos is distributed in the hope that it will be useful, but WITHOUT      
 
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
 
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
 
// for more details.                                                        
 
//
 
// You should have received a copy of the GNU General Public License        
 
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
 
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
 
//
 
// As a special exception, if other files instantiate templates or use      
 
// macros or inline functions from this file, or you compile this file      
 
// and link it with other works to produce a work based on this file,       
 
// this file does not by itself cause the resulting work to be covered by   
 
// the GNU General Public License. However the source code for this file    
 
// must still be made available in accordance with section (3) of the GNU   
 
// General Public License v2.                                               
 
//
 
// This exception does not invalidate any other reasons why a work based    
 
// on this file might be covered by the GNU General Public License.         
 
// -------------------------------------------                              
 
// ####ECOSGPLCOPYRIGHTEND####                                              
 
//===========================================================================
 
//#####DESCRIPTIONBEGIN####
 
//
 
// Author(s):    jlarmour
 
// Contributors: 
 
// Date:         2000-04-20
 
// Purpose:     
 
// Description: 
 
// Usage:       
 
//
 
//####DESCRIPTIONEND####
 
//
 
//===========================================================================
 
//
 
// This code is based on original code with the following copyright:
 
//
 
/*-
 
 * Copyright (c) 1990 The Regents of the University of California.
 
 * All rights reserved.
 
 *
 
 * This code is derived from software contributed to Berkeley by
 
 * Chris Torek.
 
 *
 
 * Redistribution and use in source and binary forms, with or without
 
 * modification, are permitted provided that the following conditions
 
 * are met:
 
 * 1. Redistributions of source code must retain the above copyright
 
 *    notice, this list of conditions and the following disclaimer.
 
 * 2. Redistributions in binary form must reproduce the above copyright
 
 *    notice, this list of conditions and the following disclaimer in the
 
 *    documentation and/or other materials provided with the distribution.
 
 * 3. Neither the name of the University nor the names of its contributors
 
 *    may be used to endorse or promote products derived from this software
 
 *    without specific prior written permission.
 
 *
 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 
 * SUCH DAMAGE.
 
 */
 
 
 
 
 
// CONFIGURATION
 
 
 
//#include <pkgconf/libc_stdio.h>   // Configuration header
 
//#include <pkgconf/libc_i18n.h>    // Configuration header for mb support
 
 
 
// INCLUDES
 
 
 
//jb#include <stdarg.h>               // Variable argument definitions
 
//jb#include <string.h>               // memchr() and strlen() functions
 
//#include <stdio.h>                // Standard header for all stdio files
 
 
 
//#include <cyg/libc/stdio/stream.hxx> // C library streams
 
 
 
//#include "vfnprintf.h"
 
 
 
//jb#include <stddef.h> // for null, va_lsit
 
 
 
#include "lib-utils.h" // has all these required basic c functions now
 
 
 
//#include <cyg/infra/cyg_type.h>   // Common type definitions and support
 
#define CYG_MACRO_START do {
 
#define CYG_MACRO_END   } while (0)
 
 
 
#define CYG_EMPTY_STATEMENT CYG_MACRO_START CYG_MACRO_END
 
 
 
#define CYG_UNUSED_PARAM( _type_, _name_ ) CYG_MACRO_START      \
 
  _type_ __tmp1 = (_name_);                                     \
 
  _type_ __tmp2 = __tmp1;                                       \
 
  __tmp1 = __tmp2;                                              \
 
CYG_MACRO_END
 
 
 
 
 
# define BUF            40
 
 
 
/*
 
 * Actual printf innards.
 
 *
 
 * This code is large and complicated...
 
 */
 
 
 
 
 
/*
 
 * Macros for converting digits to letters and vice versa
 
 */
 
#define to_digit(c)     ((c) - '0')
 
#define is_digit(c)     ((unsigned)to_digit(c) <= 9)
 
#define to_char(n)      ((n) + '0')
 
 
 
/*
 
 * Flags used during conversion.
 
 */
 
#define ALT             0x001           /* alternate form */
 
#define HEXPREFIX       0x002           /* add 0x or 0X prefix */
 
#define LADJUST         0x004           /* left adjustment */
 
#define LONGDBL         0x008           /* long double; unimplemented */
 
#define LONGINT         0x010           /* long integer */
 
#define QUADINT         0x020           /* quad integer */
 
#define SHORTINT        0x040           /* short integer */
 
#define ZEROPAD         0x080           /* zero (as opposed to blank) pad */
 
#define FPT             0x100           /* Floating point number */
 
#define SIZET           0x200           /* size_t */
 
 
 
 
 
// Function which prints back to the buffer, ptr, len bytes
 
// returns 1 if it should finish up, otherwise 0 to continue
 
int
 
print_back_to_string(char * ptr, int len, size_t * n, int * ret, char ** stream)
 
{
 
#define MIN(a, b) ((a) < (b) ? (a) : (b))
 
  do {
 
    int length = MIN( (int) len, *n - *ret - 1);
 
    memcpy(*stream + *ret, ptr, length);
 
    if (length < (int)len) {
 
      *ret += length;
 
      return 1; // finish up
 
    }
 
 
 
  } while(0);
 
 
 
    return 0;
 
}
 
 
 
//externC int 
 
int
 
//vfnprintf ( FILE *stream, size_t n, const char *format, va_list arg) __THROW
 
vfnprintf ( char *stream, size_t n, const char *format, va_list arg)
 
{
 
  char *fmt;     /* format string */
 
  int ch;        /* character from fmt */
 
  int x, y;      /* handy integers (short term usage) */
 
  char *cp;      /* handy char pointer (short term usage) */
 
  int flags;     /* flags as above */
 
 
 
  int ret;                /* return value accumulator */
 
  int width;              /* width from format (%8d), or 0 */
 
  int prec;               /* precision from format (%.3d), or -1 */
 
  char sign;              /* sign prefix (' ', '+', '-', or \0) */
 
  wchar_t wc;
 
 
 
#define quad_t    long long
 
#define u_quad_t  unsigned long long
 
 
 
  u_quad_t _uquad;        /* integer arguments %[diouxX] */
 
  enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */
 
  int dprec;              /* a copy of prec if [diouxX], 0 otherwise */
 
  int fieldsz;            /* field size expanded by sign, etc */
 
  int realsz;             /* field size expanded by dprec */
 
  int size;               /* size of converted field or string */
 
  char *xdigs;            /* digits for [xX] conversion */
 
#define NIOV 8
 
  char buf[BUF];          /* space for %c, %[diouxX], %[eEfgG] */
 
  char ox[2];             /* space for 0x hex-prefix */
 
 
 
  /*
 
   * Choose PADSIZE to trade efficiency vs. size.  If larger printf
 
   * fields occur frequently, increase PADSIZE and make the initialisers
 
   * below longer.
 
   */
 
#define PADSIZE 16              /* pad chunk size */
 
  static char blanks[PADSIZE] =
 
    {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
 
  static char zeroes[PADSIZE] =
 
    {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
 
 
 
  /*
 
   * BEWARE, these `goto error' on error, and PAD uses `n'.
 
   */
 
 
 
  // We'll copy len bytes from (char*) ptr, into the output stream
 
  // making sure we don't go over the end, so calculate length to be
 
  // either the whole length we've been passed, or the whole length
 
  // that is possible to write
 
  // We finish if it was not possible to write the entire variable
 
  // into the buffer, ie we had to write all we could, not all we
 
  // wanted to.
 
  /*
 
    #define PRINT(ptr, len)                                             \
 
    CYG_MACRO_START                                                     \
 
    int length = MIN( (int) len, n - ret - 1);                          \
 
    char* begin_stream_write = stream;                                  \
 
    stream = memcpy(stream, ptr, length);                               \
 
    length = (unsigned long) stream - (unsigned long) begin_stream_write; \
 
    if (length < (int)len) {                                            \
 
    ret += length;                                                      \
 
    goto done;                                                          \
 
    }                                                                   \
 
    CYG_MACRO_END
 
  */
 
 
 
        //PRINT(with, PADSIZE);                                         \
 
      //PRINT(with, x);                                                 \
 
  
 
#define PAD(howmany, with)                                              \
 
  CYG_MACRO_START                                                       \
 
    if ((x = (howmany)) > 0) {                                           \
 
      while (x > PADSIZE) {                                             \
 
        if (print_back_to_string(with, PADSIZE, &n, &ret, &stream)) goto done; \
 
        x -= PADSIZE;                                                   \
 
      }                                                                 \
 
      if (print_back_to_string(with, x, &n, &ret, &stream))goto done;   \
 
    }                                                                   \
 
  CYG_MACRO_END
 
 
 
  /*
 
   * To extend shorts properly, we need both signed and unsigned
 
   * argument extraction methods.
 
   */
 
 
 
#define SARG()                                    \
 
  (flags&QUADINT ? va_arg(arg, long long) :       \
 
   flags&LONGINT ? va_arg(arg, long) :                       \
 
   flags&SHORTINT ? (long)(short)va_arg(arg, int) :          \
 
   flags&SIZET ? (long)va_arg(arg, size_t) :                 \
 
   (long)va_arg(arg, int))
 
#define UARG()                                             \
 
  (flags&QUADINT ? va_arg(arg, unsigned long long) :       \
 
   flags&LONGINT ? va_arg(arg, unsigned long) :                         \
 
   flags&SHORTINT ? (unsigned long)(unsigned short)va_arg(arg, int) :   \
 
   flags&SIZET ? va_arg(arg, size_t) :                                  \
 
   (unsigned long)va_arg(arg, unsigned int))
 
 
 
 
 
  xdigs = NULL;  // stop compiler whinging
 
  fmt = (char *)format;
 
  ret = 0;
 
 
 
  /*
 
   * Scan the format for conversions (`%' character).
 
   */
 
  for (;;) {
 
    cp = (char *)fmt; // char pointer - set to where we begin looking from
 
    while ((x = ((wc = *fmt) != 0))) { // While, wc=next char and x is one while there's still chars left
 
      fmt += x; // increment the pointer to the char
 
      if (wc == '%') { // check if it's the beginning of
 
        fmt--; // Decrement the char pointer, actually
 
        break;
 
      }
 
    }
 
    if ((y = fmt - cp) != 0) { // y is length of string to copy out just now
 
      //PRINT(cp, y); // Copy macro 
 
      if(print_back_to_string(cp, y, &n, &ret, &stream)) goto done; // Copy macro 
 
      ret += y; // increment return chars
 
    }
 
    if ((x <= 0) || (ret >= (int)n))  // @@@ this check with n isn't good enough
 
      goto done;
 
    fmt++;          /* skip over '%' */
 
 
 
    flags = 0;
 
    dprec = 0;
 
    width = 0;
 
    prec = -1;
 
    sign = '\0';
 
 
 
  rflag:          ch = *fmt++;
 
  reswitch:       switch (ch) {
 
    case ' ':
 
      /*
 
       * ``If the space and + flags both appear, the space
 
       * flag will be ignored.''
 
       *      -- ANSI X3J11
 
       */
 
      if (!sign)
 
        sign = ' ';
 
      goto rflag;
 
    case '#':
 
      flags |= ALT;
 
      goto rflag;
 
    case '*':
 
      /*
 
       * ``A negative field width argument is taken as a
 
       * - flag followed by a positive field width.''
 
       *      -- ANSI X3J11
 
       * They don't exclude field widths read from args.
 
       */
 
      if ((width = va_arg(arg, int)) >= 0)
 
        goto rflag;
 
      width = -width;
 
      /* FALLTHROUGH */
 
    case '-':
 
      flags |= LADJUST;
 
      goto rflag;
 
    case '+':
 
      sign = '+';
 
      goto rflag;
 
    case '.':
 
      if ((ch = *fmt++) == '*') {
 
        x = va_arg(arg, int);
 
        prec = x < 0 ? -1 : x;
 
        goto rflag;
 
      }
 
      x = 0;
 
      while (is_digit(ch)) {
 
        x = 10 * x + to_digit(ch);
 
        ch = *fmt++;
 
      }
 
      prec = x < 0 ? -1 : x;
 
      goto reswitch;
 
    case '0':
 
      /*
 
       * ``Note that 0 is taken as a flag, not as the
 
       * beginning of a field width.''
 
       *      -- ANSI X3J11
 
       */
 
      flags |= ZEROPAD;
 
      goto rflag;
 
    case '1': case '2': case '3': case '4':
 
    case '5': case '6': case '7': case '8': case '9':
 
      x = 0;
 
      do {
 
        x = 10 * x + to_digit(ch);
 
        ch = *fmt++;
 
      } while (is_digit(ch));
 
      width = x;
 
      goto reswitch;
 
    case 'h':
 
      flags |= SHORTINT;
 
      goto rflag;
 
    case 'l':
 
      if (*fmt == 'l') {
 
        fmt++;
 
        flags |= QUADINT;
 
      } else {
 
        flags |= LONGINT;
 
      }
 
      goto rflag;
 
    case 'q':
 
      flags |= QUADINT;
 
      goto rflag;
 
    case 'c':
 
      *(cp = buf) = va_arg(arg, int);
 
      size = 1;
 
      sign = '\0';
 
      break;
 
    case 'D':
 
      flags |= LONGINT;
 
      /*FALLTHROUGH*/
 
    case 'd':
 
    case 'i':
 
      _uquad = SARG();
 
#ifndef _NO_LONGLONG
 
      if ((quad_t)_uquad < 0)
 
#else
 
        if ((long) _uquad < 0)
 
#endif
 
          {
 
 
 
            _uquad = -_uquad;
 
            sign = '-';
 
          }
 
      base = DEC;
 
      goto number;
 
 
 
    case 'e':
 
    case 'E':
 
    case 'f':
 
    case 'g':
 
    case 'G':
 
      // Output nothing at all
 
      (void) va_arg(arg, double); // take off arg anyway
 
      cp = "";
 
      size = 0;
 
      sign = '\0';
 
      break;
 
 
 
    case 'n':
 
#ifndef _NO_LONGLONG
 
      if (flags & QUADINT)
 
        *va_arg(arg, quad_t *) = ret;
 
      else
 
#endif
 
        if (flags & LONGINT)
 
          *va_arg(arg, long *) = ret;
 
        else if (flags & SHORTINT)
 
          *va_arg(arg, short *) = ret;
 
        else if (flags & SIZET)
 
          *va_arg(arg, size_t *) = ret;
 
        else
 
          *va_arg(arg, int *) = ret;
 
      continue;       /* no output */
 
    case 'O':
 
      flags |= LONGINT;
 
      /*FALLTHROUGH*/
 
    case 'o':
 
      _uquad = UARG();
 
      base = OCT;
 
      goto nosign;
 
    case 'p':
 
      /*
 
       * ``The argument shall be a pointer to void.  The
 
       * value of the pointer is converted to a sequence
 
       * of printable characters, in an implementation-
 
       * defined manner.''
 
       *      -- ANSI X3J11
 
       */
 
      /* NOSTRICT */
 
      _uquad = (unsigned long)va_arg(arg, void *);
 
      base = HEX;
 
      xdigs = (char *)"0123456789abcdef";
 
      flags |= HEXPREFIX;
 
      ch = 'x';
 
      goto nosign;
 
    case 's':
 
      if ((cp = va_arg(arg, char *)) == NULL)
 
        cp = (char *)"(null)";
 
      if (prec >= 0) {
 
        /*
 
         * can't use strlen; can only look for the
 
         * NUL in the first `prec' characters, and
 
         * strlen() will go further.
 
         */
 
        char *p = (char *)memchr(cp, 0, prec);
 
 
 
        if (p != NULL) {
 
          size = p - cp;
 
          if (size > prec)
 
            size = prec;
 
        } else
 
          size = prec;
 
      } else
 
        size = strlen(cp);
 
      sign = '\0';
 
      break;
 
    case 'U':
 
      flags |= LONGINT;
 
      /*FALLTHROUGH*/
 
    case 'u':
 
      _uquad = UARG();
 
      base = DEC;
 
      goto nosign;
 
    case 'X':
 
      xdigs = (char *)"0123456789ABCDEF";
 
      goto hex;
 
    case 'x':
 
      xdigs = (char *)"0123456789abcdef";
 
    hex:                    _uquad = UARG();
 
      base = HEX;
 
      /* leading 0x/X only if non-zero */
 
      if (flags & ALT && _uquad != 0)
 
        flags |= HEXPREFIX;
 
 
 
      /* unsigned conversions */
 
    nosign:                 sign = '\0';
 
      /*
 
       * ``... diouXx conversions ... if a precision is
 
       * specified, the 0 flag will be ignored.''
 
       *      -- ANSI X3J11
 
       */
 
    number:                 if ((dprec = prec) >= 0)
 
        flags &= ~ZEROPAD;
 
 
 
      /*
 
       * ``The result of converting a zero value with an
 
       * explicit precision of zero is no characters.''
 
       *      -- ANSI X3J11
 
       */
 
      cp = buf + BUF;
 
      if (_uquad != 0 || prec != 0) {
 
        /*
 
         * Unsigned mod is hard, and unsigned mod
 
         * by a constant is easier than that by
 
         * a variable; hence this switch.
 
         */
 
        switch (base) {
 
        case OCT:
 
          do {
 
            *--cp = to_char(_uquad & 7);
 
            _uquad >>= 3;
 
          } while (_uquad);
 
          /* handle octal leading 0 */
 
          if (flags & ALT && *cp != '0')
 
            *--cp = '0';
 
          break;
 
 
 
        case DEC:
 
          if (!(flags & QUADINT)) {
 
            /* many numbers are 1 digit */
 
            unsigned long v = (unsigned long)_uquad;
 
            while (v >= 10) {
 
              /* The following is usually faster than using a modulo */
 
              unsigned long next = v / 10;
 
              *--cp = to_char(v - (next * 10));
 
              v = next;
 
            }
 
            *--cp = to_char(v);
 
          }
 
          else {
 
            while (_uquad >= 10) {
 
              /* The following is usually faster than using a modulo */
 
              u_quad_t next = _uquad / 10;
 
              *--cp = to_char(_uquad - (next * 10));
 
              _uquad = next;
 
            }
 
            *--cp = to_char(_uquad);
 
          }
 
          break;
 
 
 
        case HEX:
 
          do {
 
            *--cp = xdigs[_uquad & 15];
 
            _uquad >>= 4;
 
          } while (_uquad);
 
          break;
 
 
 
        default:
 
          cp = (char *)"bug in vfprintf: bad base";
 
          size = strlen(cp);
 
          goto skipsize;
 
        }
 
      }
 
      size = buf + BUF - cp;
 
    skipsize:
 
      break;
 
    case 'z':
 
      flags |= SIZET;
 
      goto rflag;
 
    default:        /* "%?" prints ?, unless ? is NUL */
 
      if (ch == '\0')
 
        goto done;
 
      /* pretend it was %c with argument ch */
 
      cp = buf;
 
      *cp = ch;
 
      size = 1;
 
      sign = '\0';
 
      break;
 
    }
 
 
 
    /*
 
     * All reasonable formats wind up here.  At this point, `cp'
 
     * points to a string which (if not flags&LADJUST) should be
 
     * padded out to `width' places.  If flags&ZEROPAD, it should
 
     * first be prefixed by any sign or other prefix; otherwise,
 
     * it should be blank padded before the prefix is emitted.
 
     * After any left-hand padding and prefixing, emit zeroes
 
     * required by a decimal [diouxX] precision, then print the
 
     * string proper, then emit zeroes required by any leftover
 
     * floating precision; finally, if LADJUST, pad with blanks.
 
     *
 
     * Compute actual size, so we know how much to pad.
 
     * fieldsz excludes decimal prec; realsz includes it.
 
     */
 
#ifdef CYGSEM_LIBC_STDIO_PRINTF_FLOATING_POINT
 
    fieldsz = size + fpprec;
 
#else
 
    fieldsz = size;
 
#endif
 
    if (sign)
 
      fieldsz++;
 
    else if (flags & HEXPREFIX)
 
      fieldsz+= 2;
 
    realsz = dprec > fieldsz ? dprec : fieldsz;
 
 
 
    /* right-adjusting blank padding */
 
    if ((flags & (LADJUST|ZEROPAD)) == 0) {
 
      if (width - realsz > 0) {
 
        PAD(width - realsz, blanks);
 
        ret += width - realsz;
 
      }
 
    }
 
 
 
    /* prefix */
 
    if (sign) {
 
      //PRINT(&sign, 1);
 
      if(print_back_to_string(&sign, 1, &n, &ret, &stream))goto done;
 
      ret++;
 
    } else if (flags & HEXPREFIX) {
 
      ox[0] = '0';
 
      ox[1] = ch;
 
      //PRINT(ox, 2);
 
      if(print_back_to_string(ox, 2, &n, &ret, &stream))goto done;
 
      ret += 2;
 
    }
 
 
 
    /* right-adjusting zero padding */
 
    if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) {
 
      if (width - realsz > 0) {
 
        PAD(width - realsz, zeroes);
 
        ret += width - realsz;
 
      }
 
    }
 
 
 
    if (dprec - fieldsz > 0) {
 
      /* leading zeroes from decimal precision */
 
      PAD(dprec - fieldsz, zeroes);
 
      ret += dprec - fieldsz;
 
    }
 
 
 
    /* the string or number proper */
 
    //PRINT(cp, size);
 
    if(print_back_to_string(cp,size, &n, &ret, &stream))goto done;
 
    ret += size;
 
 
 
#ifdef CYGSEM_LIBC_STDIO_PRINTF_FLOATING_POINT
 
    /* trailing f.p. zeroes */
 
    PAD(fpprec, zeroes);
 
    ret += fpprec;
 
#endif
 
 
 
    /* left-adjusting padding (always blank) */
 
    if (flags & LADJUST) {
 
      if (width - realsz > 0) {
 
        PAD(width - realsz, blanks);
 
        ret += width - realsz;
 
      }
 
    }
 
 
 
  }
 
 
 
 done:
 
 error:
 
  return ret;// remove this error stuff (((Cyg_OutputStream *) stream)->get_error() ? EOF : ret);
 
  /* NOTREACHED */
 
}
 
 
 
#include "printf.h"
 
 
 
// Actual printf function we call, with static buffer of 512 bytes
 
char PRINTFBUFFER[PRINTFBUFFER_SIZE]; // Declare a global printf buffer
 
 
 
int
 
printf_to_sim(const char *fmt, ...)
 
{
 
 
 
  va_list args;
 
  va_start(args, fmt);
 
 
 
  int str_l = vfnprintf(PRINTFBUFFER, PRINTFBUFFER_SIZE, fmt, args);
 
 
 
  if (!str_l) return -1; // no length string - just return
 
 
 
  char c;
 
  int i=0;
 
  while(i<str_l)  sim_putc(PRINTFBUFFER[i++]);
 
 
 
  va_end(args);
 
 
 
  return str_l;
 
}
 
 
 
int
 
puts_to_sim(const char *str)
 
{
 
  return printf_to_sim("%s\n", str);
 
}
 
 
 
// Calls to the UART driver are always in the library - hence it is always
 
// required to compile everything.
 
#include "uart.h"
 
 
 
int
 
printf_to_uart(const char *fmt, ...)
 
{
 
 
 
  va_list args;
 
  va_start(args, fmt);
 
 
 
  int str_l = vfnprintf(PRINTFBUFFER, PRINTFBUFFER_SIZE, fmt, args);
 
 
 
  if (!str_l) return -1; // no length string - just return
 
 
 
  // Assumes uart is initialised
 
  int i=0;while(i<str_l) uart_putc(DEFAULT_UART,PRINTFBUFFER[i++]);
 
 
 
  va_end(args);
 
 
 
  return str_l;
 
 
 
}
 
 
 
int
 
putchar_to_uart(int c)
 
{
 
  printf_to_uart("%c",c);
 
 
 
  return c;
 
}
 
 
 
int
 
puts_to_uart(const char *str)
 
{
 
  return printf_to_uart("%s\n", str);
 
}
 
 
 
// EOF printf.c
 
 
 No newline at end of file
 No newline at end of file

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.