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584 lines
12 KiB
584 lines
12 KiB
/*++
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Copyright (c) 1991-3 Microsoft Corporation
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Module Name:
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debug.c
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Abstract:
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This component of netbios runs in the user process and can ( when
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built in a debug kernel) will log to either the console or through the
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kernel debugger.
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Author:
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Colin Watson (ColinW) 24-Jun-91
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Revision History:
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--*/
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#include "procs.h"
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#if NWDBG
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//
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// Set DebugControl to 1 to open the logfile on the first NW call and close it
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// on process exit.
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//
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int DebugCtrl = 0;
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BOOL UseConsole = FALSE;
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BOOL UseLogFile = FALSE;
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BOOL Verbose = FALSE;
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HANDLE LogFile = INVALID_HANDLE_VALUE;
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#define LOGNAME (LPTSTR) TEXT("c:\\nwapi16.log")
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LONG NwMaxDump = SERVERNAME_LENGTH * MC; //128;
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#define ERR_BUF_SIZE 260
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#define NAME_BUF_SIZE 260
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extern UCHAR CpuInProtectMode;
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LPSTR
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ConvertFlagsToString(
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IN WORD FlagsRegister,
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OUT LPSTR Buffer
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);
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WORD
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GetFlags(
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VOID
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);
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VOID
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HexDumpLine(
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PCHAR pch,
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ULONG len,
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PCHAR s,
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PCHAR t
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);
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VOID
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DebugControl(
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int Command
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)
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/*++
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Routine Description:
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This routine controls what we output as debug information and where.
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Arguments:
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IN int Command
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Return Value:
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none.
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--*/
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{
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switch (Command) {
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case 0:
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UseLogFile = TRUE;
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break;
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case 1:
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UseConsole = TRUE;
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break;
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case 2:
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if (LogFile != INVALID_HANDLE_VALUE) {
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CloseHandle(LogFile);
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LogFile = INVALID_HANDLE_VALUE;
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}
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UseLogFile = FALSE;
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UseConsole = FALSE;
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break;
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case 8:
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Verbose = TRUE; // Same as 4 only chatty
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DebugCtrl = 4;
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case 4:
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UseLogFile = TRUE;
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break;
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}
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NwPrint(("DebugControl %x\n", Command ));
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}
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VOID
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NwPrintf(
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char *Format,
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...
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)
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/*++
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Routine Description:
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This routine is equivalent to printf with the output being directed to
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stdout.
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Arguments:
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IN char *Format - Supplies string to be output and describes following
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(optional) parameters.
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Return Value:
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none.
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--*/
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{
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va_list arglist;
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char OutputBuffer[200];
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int length;
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if (( UseConsole == FALSE ) &&
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( UseLogFile == FALSE )) {
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return;
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}
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va_start( arglist, Format );
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length = _vsnprintf( OutputBuffer, sizeof(OutputBuffer)-1, Format, arglist );
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if (length < 0) {
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return;
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}
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OutputBuffer[sizeof(OutputBuffer)-1] = '\0'; // in-case length= 199;
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va_end( arglist );
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if ( UseConsole ) {
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DbgPrint( "%s", OutputBuffer );
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} else {
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if ( LogFile == INVALID_HANDLE_VALUE ) {
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if ( UseLogFile ) {
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LogFile = CreateFile( LOGNAME,
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GENERIC_WRITE,
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FILE_SHARE_WRITE | FILE_SHARE_READ,
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NULL,
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TRUNCATE_EXISTING,
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FILE_ATTRIBUTE_NORMAL,
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NULL );
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if (LogFile == INVALID_HANDLE_VALUE) {
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LogFile = CreateFile( LOGNAME,
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GENERIC_WRITE,
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FILE_SHARE_WRITE | FILE_SHARE_READ,
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NULL,
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OPEN_ALWAYS,
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FILE_ATTRIBUTE_NORMAL,
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NULL );
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}
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if ( LogFile == INVALID_HANDLE_VALUE ) {
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UseLogFile = FALSE;
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return;
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}
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}
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}
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WriteFile( LogFile , (LPVOID )OutputBuffer, length, &length, NULL );
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}
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} // NwPrintf
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void
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FormattedDump(
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PCHAR far_p,
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LONG len
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)
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/*++
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Routine Description:
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This routine outputs a buffer in lines of text containing hex and
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printable characters.
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Arguments:
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IN far_p - Supplies buffer to be displayed.
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IN len - Supplies the length of the buffer in bytes.
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Return Value:
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none.
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--*/
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{
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ULONG l;
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char s[80], t[80];
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if (( UseConsole == FALSE ) &&
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( UseLogFile == FALSE )) {
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return;
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}
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if (( len > NwMaxDump ) ||
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( len < 0 )) {
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len = NwMaxDump;
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}
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while (len) {
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l = len < 16 ? len : 16;
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NwPrint(("%lx ", far_p));
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HexDumpLine (far_p, l, s, t);
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NwPrint(("%s%.*s%s\n", s, 1 + ((16 - l) * 3), "", t));
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len -= l;
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far_p += l;
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}
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}
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VOID
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HexDumpLine(
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PCHAR pch,
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ULONG len,
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PCHAR s,
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PCHAR t
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)
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/*++
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Routine Description:
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This routine builds a line of text containing hex and printable characters.
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Arguments:
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IN pch - Supplies buffer to be displayed.
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IN len - Supplies the length of the buffer in bytes.
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IN s - Supplies the start of the buffer to be loaded with the string
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of hex characters.
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IN t - Supplies the start of the buffer to be loaded with the string
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of printable ascii characters.
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Return Value:
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none.
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--*/
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{
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static UCHAR rghex[] = "0123456789ABCDEF";
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UCHAR c;
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UCHAR *hex, *asc;
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hex = s;
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asc = t;
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*(asc++) = '*';
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while (len--) {
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c = *(pch++);
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*(hex++) = rghex [c >> 4] ;
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*(hex++) = rghex [c & 0x0F];
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*(hex++) = ' ';
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*(asc++) = (c < ' ' || c > '~') ? (CHAR )'.' : c;
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}
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*(asc++) = '*';
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*asc = 0;
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*hex = 0;
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}
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VOID
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DisplayExtendedError(VOID)
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{
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TCHAR errorBuf[ERR_BUF_SIZE];
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TCHAR nameBuf[NAME_BUF_SIZE];
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DWORD errorCode;
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DWORD status;
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status = WNetGetLastError(
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&errorCode,
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errorBuf,
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ERR_BUF_SIZE,
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nameBuf,
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NAME_BUF_SIZE);
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if(status != WN_SUCCESS) {
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NwPrint(("nwapi32: WNetGetLastError failed %d\n",status));
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return;
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}
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NwPrint(("nwapi32: EXTENDED ERROR INFORMATION: (from GetLastError)\n"));
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NwPrint(("nwapi32: Code: %d\n",errorCode));
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NwPrint(("nwapi32: Description: "FORMAT_LPSTR"\n",errorBuf));
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NwPrint(("nwapi32: Provider: "FORMAT_LPSTR"\n\n",nameBuf));
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return;
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}
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VOID
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VrDumpRealMode16BitRegisters(
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IN BOOL DebugStyle
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)
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/*++
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Routine Description:
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Displays dump of 16-bit
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real-mode 80286 registers - gp registers (8), segment registers (4), flags
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register (1) instruction pointer register (1)
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Arguments:
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DebugStyle - determines look of output:
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DebugStyle == TRUE:
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ax=1111 bx=2222 cx=3333 dx=4444 sp=5555 bp=6666 si=7777 di=8888
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ds=aaaa es=bbbb ss=cccc cs=dddd ip=iiii fl fl fl fl fl fl fl fl
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DebugStyle == FALSE:
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cs:ip=cccc:iiii ss:sp=ssss:pppp bp=bbbb ax=1111 bx=2222 cx=3333 dx=4444
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ds:si=dddd:ssss es:di=eeee:dddd flags[ODIxSZxAxPxC]=fl fl fl fl fl fl fl fl
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Return Value:
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None.
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--*/
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{
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char flags_string[25];
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if (( UseConsole == FALSE ) &&
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( UseLogFile == FALSE )) {
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return;
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}
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if (CpuInProtectMode) {
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NwPrint(( "Protect Mode:\n"));
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}
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if (DebugStyle) {
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NwPrint((
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"ax=%04x bx=%04x cx=%04x dx=%04x sp=%04x bp=%04x si=%04x di=%04x\n"
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"ds=%04x es=%04x ss=%04x cs=%04x ip=%04x %s\n\n",
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pNwDosTable->SavedAx, //getAX(),
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getBX(),
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getCX(),
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getDX(),
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getSP(),
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getBP(),
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getSI(),
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getDI(),
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getDS(),
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getES(),
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getSS(),
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getCS(),
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getIP(),
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ConvertFlagsToString(GetFlags(), flags_string)
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));
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} else {
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NwPrint((
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"cs:ip=%04x:%04x ss:sp=%04x:%04x bp=%04x ax=%04x bx=%04x cx=%04x dx=%04x\n"
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"ds:si=%04x:%04x es:di=%04x:%04x flags[ODITSZxAxPxC]=%s\n\n",
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getCS(),
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getIP(),
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getSS(),
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getSP(),
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getBP(),
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pNwDosTable->SavedAx, //getAX(),
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getBX(),
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getCX(),
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getDX(),
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getDS(),
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getSI(),
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getES(),
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getDI(),
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ConvertFlagsToString(GetFlags(), flags_string)
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));
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}
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}
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LPSTR
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ConvertFlagsToString(
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IN WORD FlagsRegister,
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OUT LPSTR Buffer
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)
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/*++
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Routine Description:
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Given a 16-bit word, interpret bit positions as for x86 Flags register
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and produce descriptive string of flags state (as per debug) eg:
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NV UP DI PL NZ NA PO NC ODItSZxAxPxC = 000000000000b
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OV DN EI NG ZR AC PE CY ODItSZxAxPxC = 111111111111b
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Trap Flag (t) is not dumped since this has no interest for programs which
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are not debuggers or don't examine program execution (ie virtually none)
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Arguments:
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FlagsRegister - 16-bit flags
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Buffer - place to store string. Requires 25 bytes inc \0
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Return Value:
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Address of <Buffer>
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--*/
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{
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static char* flags_states[16][2] = {
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//0 1
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"NC", "CY", // CF (0x0001) - Carry
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"", "", // x (0x0002)
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"PO", "PE", // PF (0x0004) - Parity
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"", "", // x (0x0008)
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"NA", "AC", // AF (0x0010) - Aux (half) carry
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"", "", // x (0x0020)
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"NZ", "ZR", // ZF (0x0040) - Zero
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"PL", "NG", // SF (0x0080) - Sign
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"", "", // TF (0x0100) - Trap (not dumped)
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"DI", "EI", // IF (0x0200) - Interrupt
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"UP", "DN", // DF (0x0400) - Direction
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"NV", "OV", // OF (0x0800) - Overflow
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"", "", // x (0x1000) - (I/O Privilege Level) (not dumped)
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"", "", // x (0x2000) - (I/O Privilege Level) (not dumped)
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"", "", // x (0x4000) - (Nested Task) (not dumped)
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"", "" // x (0x8000)
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};
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int i;
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WORD bit;
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BOOL on;
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*Buffer = 0;
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for (bit=0x0800, i=11; bit; bit >>= 1, --i) {
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on = (BOOL)((FlagsRegister & bit) == bit);
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if (flags_states[i][on][0]) {
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strcat(Buffer, flags_states[i][on]);
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strcat(Buffer, " ");
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}
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}
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return Buffer;
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}
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WORD
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GetFlags(
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VOID
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)
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/*++
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Routine Description:
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Supplies the missing softpc function
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Arguments:
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None.
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Return Value:
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Conglomerates softpc flags into x86 flags word
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--*/
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{
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WORD flags;
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flags = (WORD)getCF();
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flags |= (WORD)getPF() << 2;
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flags |= (WORD)getAF() << 4;
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flags |= (WORD)getZF() << 6;
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flags |= (WORD)getSF() << 7;
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flags |= (WORD)getIF() << 9;
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flags |= (WORD)getDF() << 10;
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flags |= (WORD)getOF() << 11;
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return flags;
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}
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VOID
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VrDumpNwData(
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VOID
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)
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/*++
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Routine Description:
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Dumps out the state of the 16 bit datastructures.
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Arguments:
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none.
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Return Value:
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None.
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--*/
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{
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int index;
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int Drive;
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if (Verbose == FALSE) {
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return;
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}
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NwPrint(( "Preferred = %x, Primary = %x\n",
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pNwDosTable->PreferredServer,
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pNwDosTable->PrimaryServer));
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for (index = 0; index < MC; index++) {
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if ((PUCHAR)pNwDosTable->ServerNameTable[index][0] != 0 ) {
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if (pNwDosTable->ConnectionIdTable[index].ci_InUse != IN_USE) {
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NwPrint(("Warning Connection not in use %x: %x\n",
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index,
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pNwDosTable->ConnectionIdTable[index].ci_InUse));
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}
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NwPrint((" Server %d = %s, Connection = %d\n",
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index,
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(PUCHAR)pNwDosTable-> ServerNameTable[index],
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(((pNwDosTable->ConnectionIdTable[index]).ci_ConnectionHi * 256) +
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( pNwDosTable-> ConnectionIdTable[index]).ci_ConnectionLo )));
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} else {
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if (pNwDosTable->ConnectionIdTable[index].ci_InUse != FREE) {
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NwPrint(("Warning Connection in use but name is null %x: %x\n",
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index,
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pNwDosTable->ConnectionIdTable[index]));
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}
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}
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}
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for (Drive = 0; Drive < MD; Drive++ ) {
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if (pNwDosTable->DriveFlagTable[Drive] & 3) {
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NwPrint(("%c=%x on server %d,",'A' + Drive,
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pNwDosTable->DriveFlagTable[Drive],
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pNwDosTable->DriveIdTable[ Drive ] ));
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}
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}
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NwPrint(("\n"));
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}
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#endif
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