simple.cxx

eCos操作系统源码

//==========================================================================
//
//      simple.cxx
//
//      Simple, non formatting trace and assert functions
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, 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.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg
// Contributors:        nickg
// Date:        1997-12-04
// Purpose:     Simple Trace and assert functions
// Description: The functions in this file are simple implementations
//              of the standard trace and assert functions. These do not
//              do any printf style formatting, simply printing the string
//              and arguments directly.
//
//####DESCRIPTIONEND####
//
//==========================================================================

#include <pkgconf/system.h>
#include <pkgconf/infra.h>

#ifdef CYGDBG_INFRA_DEBUG_TRACE_ASSERT_SIMPLE

#include <cyg/infra/cyg_type.h>         // base types
#include <cyg/infra/cyg_trac.h>         // tracing macros
#include <cyg/infra/cyg_ass.h>          // assertion macros

#include <pkgconf/hal.h>                // HAL configury
#include <cyg/infra/diag.h>             // HAL polled output
#include <cyg/hal/hal_arch.h>           // architectural stuff for...
#include <cyg/hal/hal_intr.h>           // interrupt control

#ifdef CYGPKG_KERNEL
#include <pkgconf/kernel.h>             // kernel configury
#include <cyg/kernel/thread.hxx>        // thread id to print
#include <cyg/kernel/sched.hxx>         // ancillaries for above
#include <cyg/kernel/thread.inl>        // ancillaries for above
#endif

// -------------------------------------------------------------------------
// Local Configuration: hack me!

#define CYG_NO_FILENAME 1
#define CYG_NO_THREADID 0
#define CYG_NO_LINENUM  0
#define CYG_NO_FUNCNAME 0
#define CYG_DIAG_PRINTF 1

#ifndef CYGPKG_KERNEL
# undef  CYG_NO_THREADID
# define CYG_NO_THREADID 1
#endif
// -------------------------------------------------------------------------
// Functions to trim file names and function names down to printable lengths
// (these are shared between trace and assert functions)

static const char *trim_file(const char *file)
{
#if !CYG_NO_FILENAME
    if ( NULL == file )
        file = "<nofile>";
    
    const char *f = file;
    
    while( *f ) f++;

    while( *f != '/' && f != file ) f--;

    return f==file?f:(f+1);
#else
    return "";
#endif
}

static const char *trim_func(const char *func)
{
#if !CYG_NO_FUNCNAME
    
    static char fbuf[100];
    int i;
    
    if ( NULL == func )
        func = "<nofunc>";

    for( i = 0; func[i] && func[i] != '(' ; i++ )
        fbuf[i] = func[i];

    fbuf[i++] = '(';
    fbuf[i++] = ')';
    fbuf[i  ] = 0;

    return &fbuf[0];
#else
    return "";
#endif
}

void write_lnum( cyg_uint32 lnum)
{
#if !CYG_NO_LINENUM
    diag_write_char('[');
    diag_write_dec(lnum);
    diag_write_char(']');
#endif
}

void write_thread_id()
{
#if !CYG_NO_THREADID    
    Cyg_Thread *t = Cyg_Thread::self();
    cyg_uint16 tid = 0xFFFF;

    if( t != NULL ) tid = t->get_unique_id();

    diag_write_char('<');
    diag_write_hex(tid);
    diag_write_char('>');
#endif
}


// -------------------------------------------------------------------------
// Trace functions:

#ifdef CYGDBG_USE_TRACING

externC void
cyg_tracenomsg( const char *psz_func, const char *psz_file, cyg_uint32 linenum )
{
    cyg_uint32 old_ints;

    HAL_DISABLE_INTERRUPTS(old_ints);
    DIAG_DEVICE_START_SYNC();

    diag_write_string("TRACE: ");
    write_thread_id();
    diag_write_string(trim_file(psz_file));
    write_lnum(linenum);
    diag_write_string(trim_func(psz_func));
    diag_write_char('\n');

    DIAG_DEVICE_END_SYNC();
    HAL_RESTORE_INTERRUPTS(old_ints);
    
};

// provide every other one of these as a space/caller bloat compromise.

externC void
cyg_tracemsg( cyg_uint32 what, 
              const char *psz_func, const char *psz_file, cyg_uint32 linenum,
              const char *psz_msg )
{
    cyg_uint32 old_ints;

    HAL_DISABLE_INTERRUPTS(old_ints);
    DIAG_DEVICE_START_SYNC();

    if ( NULL == psz_msg )
        psz_msg = "<nomsg>";

    diag_write_string("TRACE: ");
    write_thread_id();
    diag_write_string(trim_file(psz_file));
    write_lnum(linenum);
    diag_write_string(trim_func(psz_func));
    diag_write_char(' ');
    diag_write_string(psz_msg);
    diag_write_char('\n');

    DIAG_DEVICE_END_SYNC();
    HAL_RESTORE_INTERRUPTS(old_ints);

};

externC void
cyg_tracemsg2( cyg_uint32 what, 
               const char *psz_func, const char *psz_file, cyg_uint32 linenum,
               const char *psz_msg,
               CYG_ADDRWORD arg0,  CYG_ADDRWORD arg1 )
{
    cyg_uint32 old_ints;

    HAL_DISABLE_INTERRUPTS(old_ints);
    DIAG_DEVICE_START_SYNC();

    if ( NULL == psz_msg )
        psz_msg = "<nomsg>";

    diag_write_string("TRACE: ");
    write_thread_id();
    diag_write_string(trim_file(psz_file));
    write_lnum(linenum);
    diag_write_string(trim_func(psz_func));
    diag_write_char(' ');
#if CYG_DIAG_PRINTF
    diag_printf( psz_msg, arg0, arg1 );
#else
    diag_write_string(psz_msg);
    diag_write_char(' ');
    diag_write_hex(arg0);
    diag_write_char(' ');
    diag_write_hex(arg1);
#endif    
    diag_write_char('\n');    
    DIAG_DEVICE_END_SYNC();
    HAL_RESTORE_INTERRUPTS(old_ints);
};

externC void
cyg_tracemsg4( cyg_uint32 what, 
               const char *psz_func, const char *psz_file, cyg_uint32 linenum, 
               const char *psz_msg,
               CYG_ADDRWORD arg0,  CYG_ADDRWORD arg1,
               CYG_ADDRWORD arg2,  CYG_ADDRWORD arg3 )
{
    cyg_uint32 old_ints;

    HAL_DISABLE_INTERRUPTS(old_ints);
    DIAG_DEVICE_START_SYNC();

    if ( NULL == psz_msg )
        psz_msg = "<nomsg>";

    diag_write_string("TRACE: ");
    write_thread_id();
    diag_write_string(trim_file(psz_file));
    write_lnum(linenum);
    diag_write_string(trim_func(psz_func));
    diag_write_char(' ');
#if CYG_DIAG_PRINTF
    diag_printf( psz_msg, arg0, arg1, arg2, arg3 );
#else
    diag_write_string(psz_msg);
    diag_write_char(' ');
    diag_write_hex(arg0);
    diag_write_char(' ');
    diag_write_hex(arg1);
    diag_write_char(' ');
    diag_write_hex(arg2);
    diag_write_char(' ');
    diag_write_hex(arg3);
#endif    
    diag_write_char('\n');