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Stdio redirection?
- To: newlib at sources dot redhat dot com, crossgcc at sourceware dot cygnus dot com
- Subject: Stdio redirection?
- From: "Russ.Shaw" <russell at webaxs dot net>
- Date: Mon, 02 Oct 2000 15:05:55 +1000
Hi all,
I'm using gcc-2.95.2 on a gnu/linux system, configured as a
cross-compiler for the hitachi h8300-hms.
I got a cygnus CD with the hitachi board i bought, but it only
works with windoze, and the manuals don't cover what i need...
In <stdio.h> (inluded here), how do i get the printf() functions
to use my own putch() and getch() functions for the serial ports?
/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* 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.
*
* @(#)stdio.h 5.3 (Berkeley) 3/15/86
*/
/*
* NB: to fit things in six character monocase externals, the
* stdio code uses the prefix `__s' for stdio objects, typically
* followed by a three-character attempt at a mnemonic.
*/
#ifndef _STDIO_H_
#ifdef __cplusplus
extern "C" {
#endif
#define _STDIO_H_
#include "_ansi.h"
#define _FSTDIO /* ``function stdio'' */
#define __need_size_t
#include <stddef.h>
#define __need___va_list
#include <stdarg.h>
/*
* <sys/reent.h> defines __sFILE, _fpos_t.
* They must be defined there because struct _reent needs them (and we don't
* want reent.h to include this file.
*/
#include <sys/reent.h>
typedef _fpos_t fpos_t;
typedef struct __sFILE FILE;
#define __SLBF 0x0001 /* line buffered */
#define __SNBF 0x0002 /* unbuffered */
#define __SRD 0x0004 /* OK to read */
#define __SWR 0x0008 /* OK to write */
/* RD and WR are never simultaneously asserted */
#define __SRW 0x0010 /* open for reading & writing */
#define __SEOF 0x0020 /* found EOF */
#define __SERR 0x0040 /* found error */
#define __SMBF 0x0080 /* _buf is from malloc */
#define __SAPP 0x0100 /* fdopen()ed in append mode - so must write to end */
#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
#define __SOPT 0x0400 /* do fseek() optimisation */
#define __SNPT 0x0800 /* do not do fseek() optimisation */
#define __SOFF 0x1000 /* set iff _offset is in fact correct */
#define __SMOD 0x2000 /* true => fgetline modified _p text */
#if defined(__CYGWIN__) || defined(__CYGWIN__)
#define __SCLE 0x4000 /* convert line endings CR/LF <-> NL */
#endif
/*
* The following three definitions are for ANSI C, which took them
* from System V, which stupidly took internal interface macros and
* made them official arguments to setvbuf(), without renaming them.
* Hence, these ugly _IOxxx names are *supposed* to appear in user code.
*
* Although these happen to match their counterparts above, the
* implementation does not rely on that (so these could be renumbered).
*/
#define _IOFBF 0 /* setvbuf should set fully buffered */
#define _IOLBF 1 /* setvbuf should set line buffered */
#define _IONBF 2 /* setvbuf should set unbuffered */
#ifndef NULL
#define NULL 0
#endif
#define BUFSIZ 1024
#define EOF (-1)
#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */
#define L_tmpnam 1024 /* XXX must be == PATH_MAX */
#ifndef __STRICT_ANSI__
#define P_tmpdir "/tmp"
#endif
#ifndef SEEK_SET
#define SEEK_SET 0 /* set file offset to offset */
#endif
#ifndef SEEK_CUR
#define SEEK_CUR 1 /* set file offset to current plus offset */
#endif
#ifndef SEEK_END
#define SEEK_END 2 /* set file offset to EOF plus offset */
#endif
#define TMP_MAX 26
#define stdin (_impure_ptr->_stdin)
#define stdout (_impure_ptr->_stdout)
#define stderr (_impure_ptr->_stderr)
#define _stdin_r(x) ((x)->_stdin)
#define _stdout_r(x) ((x)->_stdout)
#define _stderr_r(x) ((x)->_stderr)
/*
* Functions defined in ANSI C standard.
*/
#ifdef __GNUC__
#define __VALIST __gnuc_va_list
#else
#define __VALIST char*
#endif
#ifndef _REENT_ONLY
int _EXFUN(remove, (const char *));
int _EXFUN(rename, (const char *, const char *));
#endif
char * _EXFUN(tempnam, (const char *, const char *));
FILE * _EXFUN(tmpfile, (void));
char * _EXFUN(tmpnam, (char *));
int _EXFUN(fclose, (FILE *));
int _EXFUN(fflush, (FILE *));
FILE * _EXFUN(freopen, (const char *, const char *, FILE *));
void _EXFUN(setbuf, (FILE *, char *));
int _EXFUN(setvbuf, (FILE *, char *, int, size_t));
int _EXFUN(fprintf, (FILE *, const char *, ...));
int _EXFUN(fscanf, (FILE *, const char *, ...));
int _EXFUN(printf, (const char *, ...));
int _EXFUN(scanf, (const char *, ...));
int _EXFUN(sscanf, (const char *, const char *, ...));
int _EXFUN(vfprintf, (FILE *, const char *, __VALIST));
int _EXFUN(vprintf, (const char *, __VALIST));
int _EXFUN(vsprintf, (char *, const char *, __VALIST));
int _EXFUN(vsnprintf, (char *, size_t, const char *, __VALIST));
int _EXFUN(fgetc, (FILE *));
char * _EXFUN(fgets, (char *, int, FILE *));
int _EXFUN(fputc, (int, FILE *));
int _EXFUN(fputs, (const char *, FILE *));
int _EXFUN(getc, (FILE *));
int _EXFUN(getchar, (void));
char * _EXFUN(gets, (char *));
int _EXFUN(putc, (int, FILE *));
int _EXFUN(putchar, (int));
int _EXFUN(puts, (const char *));
int _EXFUN(ungetc, (int, FILE *));
size_t _EXFUN(fread, (_PTR, size_t _size, size_t _n, FILE *));
size_t _EXFUN(fwrite, (const _PTR , size_t _size, size_t _n, FILE *));
int _EXFUN(fgetpos, (FILE *, fpos_t *));
int _EXFUN(fseek, (FILE *, long, int));
int _EXFUN(fsetpos, (FILE *, const fpos_t *));
long _EXFUN(ftell, ( FILE *));
void _EXFUN(rewind, (FILE *));
void _EXFUN(clearerr, (FILE *));
int _EXFUN(feof, (FILE *));
int _EXFUN(ferror, (FILE *));
void _EXFUN(perror, (const char *));
#ifndef _REENT_ONLY
FILE * _EXFUN(fopen, (const char *_name, const char *_type));
int _EXFUN(sprintf, (char *, const char *, ...));
int _EXFUN(snprintf, (char *, size_t, const char *, ...));
#endif
#ifndef __STRICT_ANSI__
int _EXFUN(vfiprintf, (FILE *, const char *, __VALIST));
int _EXFUN(iprintf, (const char *, ...));
int _EXFUN(fiprintf, (FILE *, const char *, ...));
int _EXFUN(siprintf, (char *, const char *, ...));
#endif
/*
* Routines in POSIX 1003.1.
*/
#ifndef __STRICT_ANSI__
#ifndef _REENT_ONLY
FILE * _EXFUN(fdopen, (int, const char *));
#endif
int _EXFUN(fileno, (FILE *));
int _EXFUN(getw, (FILE *));
int _EXFUN(pclose, (FILE *));
FILE * _EXFUN(popen, (const char *, const char *));
int _EXFUN(putw, (int, FILE *));
void _EXFUN(setbuffer, (FILE *, char *, int));
int _EXFUN(setlinebuf, (FILE *));
#endif
/*
* Recursive versions of the above.
*/
FILE * _EXFUN(_fdopen_r, (struct _reent *, int, const char *));
FILE * _EXFUN(_fopen_r, (struct _reent *, const char *, const char *));
int _EXFUN(_getchar_r, (struct _reent *));
char * _EXFUN(_gets_r, (struct _reent *, char *));
int _EXFUN(_iprintf_r, (struct _reent *, const char *, ...));
int _EXFUN(_mkstemp_r, (struct _reent *, char *));
char * _EXFUN(_mktemp_r, (struct _reent *, char *));
void _EXFUN(_perror_r, (struct _reent *, const char *));
int _EXFUN(_printf_r, (struct _reent *, const char *, ...));
int _EXFUN(_putchar_r, (struct _reent *, int));
int _EXFUN(_puts_r, (struct _reent *, const char *));
int _EXFUN(_remove_r, (struct _reent *, const char *));
int _EXFUN(_rename_r, (struct _reent *,
const char *_old, const char *_new));
int _EXFUN(_scanf_r, (struct _reent *, const char *, ...));
int _EXFUN(_sprintf_r, (struct _reent *, char *, const char *, ...));
int _EXFUN(_snprintf_r, (struct _reent *, char *, size_t, const char *, ...));
char * _EXFUN(_tempnam_r, (struct _reent *, const char *, const char *));
FILE * _EXFUN(_tmpfile_r, (struct _reent *));
char * _EXFUN(_tmpnam_r, (struct _reent *, char *));
int _EXFUN(_vfprintf_r, (struct _reent *, FILE *, const char *, __VALIST));
int _EXFUN(_vprintf_r, (struct _reent *, const char *, __VALIST));
int _EXFUN(_vsprintf_r, (struct _reent *, char *, const char *, __VALIST));
int _EXFUN(_vsnprintf_r, (struct _reent *, char *, size_t, const char *, __VALIST));
/*
* Routines internal to the implementation.
*/
int _EXFUN(__srget, (FILE *));
int _EXFUN(__swbuf, (int, FILE *));
/*
* Stdio function-access interface.
*/
#ifndef __STRICT_ANSI__
FILE *_EXFUN(funopen,(const _PTR _cookie,
int (*readfn)(_PTR _cookie, char *_buf, int _n),
int (*writefn)(_PTR _cookie, const char *_buf, int _n),
fpos_t (*seekfn)(_PTR _cookie, fpos_t _off, int _whence),
int (*closefn)(_PTR _cookie)));
#define fropen(cookie, fn) funopen(cookie, fn, (int (*)())0, (fpos_t (*)())0, (int (*)())0)
#define fwopen(cookie, fn) funopen(cookie, (int (*)())0, fn, (fpos_t (*)())0, (int (*)())0)
#endif
/*
* The __sfoo macros are here so that we can
* define function versions in the C library.
*/
#define __sgetc_raw(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
#ifdef __SCLE
static __inline__ int __sgetc(FILE *__p)
{
int __c = __sgetc_raw(__p);
if ((__p->_flags & __SCLE) && (__c == '\r'))
{
int __c2 = __sgetc_raw(__p);
if (__c2 == '\n')
__c = __c2;
else
ungetc(__c2, __p);
}
return __c;
}
#else
#define __sgetc(p) __sgetc_raw(p)
#endif
#ifdef _never /* __GNUC__ */
/* If this inline is actually used, then systems using coff debugging
info get hopelessly confused. 21sept93 rich@cygnus.com. */
static __inline int __sputc(int _c, FILE *_p) {
if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
return (*_p->_p++ = _c);
else
return (__swbuf(_c, _p));
}
#else
/*
* This has been tuned to generate reasonable code on the vax using pcc
*/
#define __sputc_raw(c, p) \
(--(p)->_w < 0 ? \
(p)->_w >= (p)->_lbfsize ? \
(*(p)->_p = (c)), *(p)->_p != '\n' ? \
(int)*(p)->_p++ : \
__swbuf('\n', p) : \
__swbuf((int)(c), p) : \
(*(p)->_p = (c), (int)*(p)->_p++))
#ifdef __SCLE
#define __sputc(c, p) \
((((p)->_flags & __SCLE) && ((c) == '\n')) \
? __sputc_raw('\r', (p)) : 0 , \
__sputc_raw((c), (p)))
#else
#define __sputc(c, p) __sputc_raw(c, p)
#endif
#endif
#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
#define __sferror(p) (((p)->_flags & __SERR) != 0)
#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
#define __sfileno(p) ((p)->_file)
#define feof(p) __sfeof(p)
#define ferror(p) __sferror(p)
#define clearerr(p) __sclearerr(p)
#if 0 /*ndef __STRICT_ANSI__ - FIXME: must initialize stdio first, use fn */
#define fileno(p) __sfileno(p)
#endif
#ifndef __CYGWIN__
#ifndef lint
#define getc(fp) __sgetc(fp)
#define putc(x, fp) __sputc(x, fp)
#endif /* lint */
#endif /* __CYGWIN__ */
#define getchar() getc(stdin)
#define putchar(x) putc(x, stdout)
#ifndef __STRICT_ANSI__
/* fast always-buffered version, true iff error */
#define fast_putc(x,p) (--(p)->_w < 0 ? \
__swbuf((int)(x), p) == EOF : (*(p)->_p = (x), (p)->_p++, 0))
#define L_cuserid 9 /* posix says it goes in stdio.h :( */
#ifdef __CYGWIN__
#define L_ctermid 16
#endif
#endif
#ifdef __cplusplus
}
#endif
#endif /* _STDIO_H_ */
--
*******************************************
* Russell Shaw, B.Eng, M.Eng(Research) *
* email: russell@webaxs.net *
* Victoria, Australia *
*******************************************