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908 lines
18 KiB
908 lines
18 KiB
/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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util.c - Generic Debugger Extension Utilities
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Abstract:
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Taken from AliD's ndiskd(ndiskd.c).
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Revision History:
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Who When What
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-------- -------- ----------------------------------------------
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josephj 03-30-98 Created (taken fron AliD's ndiskd (ndiskd.c).
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Notes:
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--*/
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#include "precomp.h"
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#include "common.h"
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WINDBG_EXTENSION_APIS ExtensionApis;
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EXT_API_VERSION ApiVersion = { 5, 0, EXT_API_VERSION_NUMBER, 0 };
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#define ERRPRT dprintf
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#define NL 1
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#define NONL 0
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USHORT SavedMajorVersion;
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USHORT SavedMinorVersion;
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BOOL ChkTarget; // is debuggee a CHK build?
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/*
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* Print out an optional message, an ANSI_STRING, and maybe a new-line
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*/
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BOOL
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PrintStringA( IN LPSTR msg OPTIONAL, IN PANSI_STRING pStr, IN BOOL nl )
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{
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PCHAR StringData;
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ULONG BytesRead;
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if( msg )
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dprintf( msg );
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if( pStr->Length == 0 ) {
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if( nl )
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dprintf( "\n" );
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return TRUE;
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}
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StringData = (PCHAR)LocalAlloc( LPTR, pStr->Length + 1 );
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if( StringData == NULL ) {
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ERRPRT( "Out of memory!\n" );
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return FALSE;
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}
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ReadMemory((ULONG) pStr->Buffer,
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StringData,
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pStr->Length,
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&BytesRead );
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if ( BytesRead ) {
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StringData[ pStr->Length ] = '\0';
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dprintf("%s%s", StringData, nl ? "\n" : "" );
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}
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LocalFree((HLOCAL)StringData);
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return BytesRead;
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}
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/*
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* Get 'size' bytes from the debuggee program at 'dwAddress' and place it
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* in our address space at 'ptr'. Use 'type' in an error printout if necessary
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*/
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BOOL
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GetData( IN LPVOID ptr, IN DWORD dwAddress, IN ULONG size, IN PCSTR type )
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{
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BOOL b;
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ULONG BytesRead;
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ULONG count = size;
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while( size > 0 ) {
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if (count >= 3000)
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count = 3000;
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b = ReadMemory((ULONG) dwAddress, ptr, count, &BytesRead );
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if (!b || BytesRead != count ) {
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ERRPRT( "Unable to read %u bytes at %X, for %s\n", size, dwAddress, type );
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return FALSE;
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}
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dwAddress += count;
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size -= count;
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ptr = (LPVOID)((ULONG)ptr + count);
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}
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return TRUE;
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}
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/*
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* Follow a LIST_ENTRY list beginning with a head at dwListHeadAddr in the debugee's
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* address space. For each element in the list, print out the pointer value at 'offset'
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*/
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BOOL
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PrintListEntryList( IN DWORD dwListHeadAddr, IN LONG offset )
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{
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LIST_ENTRY ListEntry;
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ULONG i=0;
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BOOL retval = TRUE;
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ULONG count = 20;
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if( !GetData( &ListEntry, dwListHeadAddr, sizeof( ListEntry ), "LIST_ENTRY" ) )
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return FALSE;
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while( count-- ) {
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if( (DWORD)ListEntry.Flink == dwListHeadAddr || (DWORD)ListEntry.Flink == 0 )
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break;
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if( !GetData( &ListEntry, (DWORD)ListEntry.Flink, sizeof( ListEntry ), "ListEntry" ) ) {
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retval = FALSE;
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break;
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}
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dprintf( "%16X%s", (LONG)ListEntry.Flink + offset, (i && !(i&3)) ? "\n" : "" );
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i++;
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}
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if( count == 0 && (DWORD)ListEntry.Flink != dwListHeadAddr && ListEntry.Flink ) {
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dprintf( "\nTruncated list dump\n" );
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} else if( ! ( i && !(i&3) ) ) {
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dprintf( "\n" );
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}
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return retval;
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}
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/*
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* Print out a single HEX character
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*/
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VOID
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PrintHexChar( IN UCHAR c )
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{
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dprintf( "%c%c", "0123456789abcdef"[ (c>>4)&0xf ], "0123456789abcdef"[ c&0xf ] );
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}
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/*
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* Print out 'buf' of 'cbuf' bytes as HEX characters
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*/
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VOID
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PrintHexBuf( IN PUCHAR buf, IN ULONG cbuf )
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{
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while( cbuf-- ) {
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PrintHexChar( *buf++ );
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dprintf( " " );
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}
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}
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/*
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* Fetch the null terminated UNICODE string at dwAddress into buf
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*/
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BOOL
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GetString( IN DWORD dwAddress, IN LPWSTR buf, IN ULONG MaxChars )
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{
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do {
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if( !GetData( buf, dwAddress, sizeof( *buf ), "Character" ) )
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return FALSE;
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dwAddress += sizeof( *buf );
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} while( --MaxChars && *buf++ != '\0' );
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return TRUE;
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}
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char *mystrtok ( char *string, char * control )
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{
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static UCHAR *str;
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char *p, *s;
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if( string )
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str = string;
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if( str == NULL || *str == '\0' )
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return NULL;
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//
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// Skip leading delimiters...
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//
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for( ; *str; str++ ) {
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for( s=control; *s; s++ ) {
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if( *str == *s )
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break;
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}
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if( *s == '\0' )
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break;
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}
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//
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// Was it was all delimiters?
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//
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if( *str == '\0' ) {
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str = NULL;
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return NULL;
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}
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//
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// We've got a string, terminate it at first delimeter
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//
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for( p = str+1; *p; p++ ) {
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for( s = control; *s; s++ ) {
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if( *p == *s ) {
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s = str;
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*p = '\0';
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str = p+1;
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return s;
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}
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}
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}
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//
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// We've got a string that ends with the NULL
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//
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s = str;
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str = NULL;
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return s;
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}
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VOID
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WinDbgExtensionDllInit(
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PWINDBG_EXTENSION_APIS lpExtensionApis,
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USHORT MajorVersion,
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USHORT MinorVersion
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)
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{
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ExtensionApis = *lpExtensionApis;
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g_pfnDbgPrintf = dprintf;
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SavedMajorVersion = MajorVersion;
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SavedMinorVersion = MinorVersion;
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ChkTarget = SavedMajorVersion == 0x0c ? TRUE : FALSE;
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}
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DECLARE_API( version )
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{
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#if DBG
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PCSTR kind = "Checked";
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#else
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PCSTR kind = "Free";
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#endif
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dprintf(
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"%s IPATM Extension dll for Build %d debugging %s kernel for Build %d\n",
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kind,
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VER_PRODUCTBUILD,
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SavedMajorVersion == 0x0c ? "Checked" : "Free",
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SavedMinorVersion
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);
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}
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VOID
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CheckVersion(
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VOID
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)
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{
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//
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// for now don't bother to version check
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//
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return;
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#if DBG
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if ((SavedMajorVersion != 0x0c) || (SavedMinorVersion != VER_PRODUCTBUILD)) {
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dprintf("\r\n*** Extension DLL(%d Checked) does not match target system(%d %s)\r\n\r\n",
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VER_PRODUCTBUILD, SavedMinorVersion, (SavedMajorVersion==0x0f) ? "Free" : "Checked" );
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}
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#else
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if ((SavedMajorVersion != 0x0f) || (SavedMinorVersion != VER_PRODUCTBUILD)) {
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dprintf("\r\n*** Extension DLL(%d Free) does not match target system(%d %s)\r\n\r\n",
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VER_PRODUCTBUILD, SavedMinorVersion, (SavedMajorVersion==0x0f) ? "Free" : "Checked" );
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}
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#endif
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}
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LPEXT_API_VERSION
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ExtensionApiVersion(
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VOID
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)
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{
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return &ApiVersion;
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}
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//
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// VOID
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// PrintName(
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// PUNICODE_STRING Name
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// );
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// print a unicode string
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// Note: the Buffer field in unicode string is unmapped
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//
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VOID
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PrintName(
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PUNICODE_STRING Name
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)
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{
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USHORT i;
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WCHAR ubuf[256];
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UCHAR abuf[256];
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if (!GetString((DWORD)Name->Buffer, ubuf, (ULONG)Name->Length))
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{
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return;
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}
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for (i = 0; i < Name->Length/2; i++)
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{
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abuf[i] = (UCHAR)ubuf[i];
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}
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abuf[i] = 0;
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dprintf("%s",abuf);
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}
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MYPWINDBG_OUTPUT_ROUTINE g_pfnDbgPrintf = NULL;
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bool
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dbgextReadMemory(
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UINT_PTR uOffset,
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void * pvBuffer,
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UINT cb,
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char *pszDescription
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)
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{
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UINT cbBytesRead=0;
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bool fRet = ReadMemory(
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uOffset,
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pvBuffer,
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cb,
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&cbBytesRead
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);
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if (!fRet || cbBytesRead != cb)
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{
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ERRPRT("Read failed: 0x%X(%s, %u bytes)\n",uOffset,pszDescription,cb);
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fRet = FALSE;
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}
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return fRet;
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}
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bool
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dbgextWriteMemory(
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UINT_PTR uOffset,
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void * pvBuffer,
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UINT cb,
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char *pszDescription
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)
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{
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UINT cbBytesWritten=0;
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bool fRet = WriteMemory(
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uOffset,
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pvBuffer,
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cb,
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&cbBytesWritten
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);
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if (!fRet || cbBytesWritten != cb)
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{
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ERRPRT("Write failed: 0x%X(%s, %u bytes)\n",uOffset,pszDescription,cb);
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fRet = FALSE;
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}
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return 0;
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}
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bool
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dbgextReadUINT_PTR(
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UINT_PTR uOffset,
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UINT_PTR *pu,
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char *pszDescription
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)
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{
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UINT cbBytesRead=0;
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bool fRet = ReadMemory(
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uOffset,
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pu,
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sizeof(*pu),
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&cbBytesRead
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);
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if (!fRet || cbBytesRead != sizeof(*pu))
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{
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ERRPRT("Read failed: 0x%X(%s, UINT_PTR)\n",uOffset,pszDescription);
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fRet = FALSE;
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}
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return fRet;
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}
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bool
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dbgextWriteUINT_PTR(
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UINT_PTR uOffset,
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UINT_PTR u,
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char *pszDescription
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)
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{
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UINT cbBytesWritten=0;
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bool fRet = WriteMemory(
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uOffset,
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&u,
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sizeof(uOffset),
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&cbBytesWritten
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);
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if (!fRet || cbBytesWritten != sizeof(u))
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{
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ERRPRT("Write failed: 0x%X(%s, UINT_PTR)\n",uOffset,pszDescription);
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fRet = FALSE;
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}
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return fRet;
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}
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UINT_PTR
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dbgextGetExpression(
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const char *pcszExpression
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)
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{
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UINT_PTR uRet = GetExpression(pcszExpression);
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//
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// At such a point we use this for something besides pointers,
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// we will remove the check below.
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//
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if (!uRet)
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{
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ERRPRT("Eval failed: \"%s\"\n", pcszExpression);
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}
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return uRet;
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}
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void
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DumpObjects(TYPE_INFO *pType, UINT_PTR uAddr, UINT cObjects, UINT uFlags)
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{
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//
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// Print object's type and size
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//
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dprintf(
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"%s@0x%X (%lu Bytes)\n",
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pType->szName,
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uAddr,
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pType->cbSize
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);
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DumpMemory(
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uAddr,
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pType->cbSize,
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0,
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pType->szName
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);
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//
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// Dump bytes...
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//
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return;
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}
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BYTE rgbScratchBuffer[100000];
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bool
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DumpMemory(
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UINT_PTR uAddr,
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UINT cb,
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UINT uFlags,
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const char *pszDescription
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)
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{
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bool fTruncated = FALSE;
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bool fRet = FALSE;
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UINT cbLeft = cb;
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char *pbSrc = rgbScratchBuffer;
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if (cbLeft>1024)
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{
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cbLeft = 1024;
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fTruncated = TRUE;
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}
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fRet = dbgextReadMemory(
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uAddr,
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rgbScratchBuffer,
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cbLeft,
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(char*)pszDescription
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);
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if (!fRet) goto end;
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#define ROWSIZE 16 // bytes
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//
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// Dump away...
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//
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while (cbLeft)
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{
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char rgTmp_dwords[ROWSIZE];
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char rgTmp_bytes[ROWSIZE];
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char *pb=NULL;
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UINT cbRow = ROWSIZE;
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if (cbRow > cbLeft)
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{
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cbRow = cbLeft;
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}
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memset(rgTmp_dwords, 0xff, sizeof(rgTmp_dwords));
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memset(rgTmp_bytes, ' ', sizeof(rgTmp_bytes));
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memcpy(rgTmp_dwords, pbSrc, cbRow);
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memcpy(rgTmp_bytes, pbSrc, cbRow);
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// sanitize bytes
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for (pb=rgTmp_bytes; pb<(rgTmp_bytes+sizeof(rgTmp_bytes)); pb++)
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{
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char c = *pb;
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if (c>=0x20 && c<0x7f) // isprint is too permissive.
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{
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if (*pb=='\t')
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{
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*pb=' ';
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}
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}
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else
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{
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*pb='.';
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}
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}
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dprintf(
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" %08lx: %08lx %08lx %08lx %08lx |%4.4s|%4.4s|%4.4s|%4.4s|\n",
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uAddr,
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((DWORD*) rgTmp_dwords)[0],
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((DWORD*) rgTmp_dwords)[1],
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((DWORD*) rgTmp_dwords)[2],
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((DWORD*) rgTmp_dwords)[3],
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#if 1
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rgTmp_bytes+0,
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rgTmp_bytes+4,
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rgTmp_bytes+8,
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rgTmp_bytes+12
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#else
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"aaaabbbbccccdddd",
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"bbbb",
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"cccc",
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"dddd"
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#endif
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);
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cbLeft -= cbRow;
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pbSrc += cbRow;
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uAddr += cbRow;
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}
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#if 0
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0x00000000: 00000000 00000000 00000000 00000000 |xxxx|xxxx|xxxx|xxxx|
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0x00000000: 00000000 00000000 00000000 00000000 |xxxx|xxxx|xxxx|xxxx|
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0x00000000: 00000000 00000000 00000000 00000000 |xxxx|xxxx|xxxx|xxxx|
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#endif //
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end:
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return fRet;
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}
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bool
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MatchPrefix(const char *szPattern, const char *szString)
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|
{
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BOOL fRet = FALSE;
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ULONG uP = lstrlenA(szPattern);
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ULONG uS = lstrlenA(szString);
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if (uP<=uS)
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{
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fRet = (_memicmp(szPattern, szString, uP)==0);
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}
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return fRet;
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}
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bool
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MatchSuffix(const char *szPattern, const char *szString)
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|
{
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BOOL fRet = FALSE;
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ULONG uP = lstrlenA(szPattern);
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ULONG uS = lstrlenA(szString);
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|
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if (uP<=uS)
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{
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szString += (uS-uP);
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fRet = (_memicmp(szPattern, szString, uP)==0);
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}
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return fRet;
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}
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|
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bool
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MatchSubstring(const char *szPattern, const char *szString)
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|
{
|
|
BOOL fRet = FALSE;
|
|
ULONG uP = lstrlenA(szPattern);
|
|
ULONG uS = lstrlenA(szString);
|
|
|
|
if (uP<=uS)
|
|
{
|
|
const char *szLast = szString + (uS-uP);
|
|
do
|
|
{
|
|
fRet = (_memicmp(szPattern, szString, uP)==0);
|
|
|
|
} while (!fRet && szString++ < szLast);
|
|
}
|
|
|
|
return fRet;
|
|
}
|
|
|
|
bool
|
|
MatchExactly(const char *szPattern, const char *szString)
|
|
{
|
|
BOOL fRet = FALSE;
|
|
ULONG uP = lstrlenA(szPattern);
|
|
ULONG uS = lstrlenA(szString);
|
|
|
|
if (uP==uS)
|
|
{
|
|
fRet = (_memicmp(szPattern, szString, uP)==0);
|
|
}
|
|
|
|
return fRet;
|
|
}
|
|
|
|
|
|
bool
|
|
MatchAlways(const char *szPattern, const char *szString)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
DumpBitFields(
|
|
ULONG Flags,
|
|
BITFIELD_INFO rgBitFieldInfo[]
|
|
)
|
|
{
|
|
BITFIELD_INFO *pbf = rgBitFieldInfo;
|
|
|
|
for(;pbf->szName; pbf++)
|
|
{
|
|
if ((Flags & pbf->Mask) == pbf->Value)
|
|
{
|
|
MyDbgPrintf(" %s", pbf->szName);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
DumpStructure(
|
|
TYPE_INFO *pType,
|
|
UINT_PTR uAddr,
|
|
char *szFieldSpec,
|
|
UINT uFlags
|
|
)
|
|
{
|
|
//
|
|
// Determine field comparision function ...
|
|
//
|
|
PFNMATCHINGFUNCTION pfnMatchingFunction = MatchAlways;
|
|
|
|
//
|
|
// Pick a selection function ...
|
|
//
|
|
if (szFieldSpec)
|
|
{
|
|
if (uFlags & fMATCH_SUBSTRING)
|
|
{
|
|
pfnMatchingFunction = MatchSubstring;
|
|
}
|
|
else if (uFlags & fMATCH_SUFFIX)
|
|
{
|
|
pfnMatchingFunction = MatchSuffix;
|
|
}
|
|
else if (uFlags & fMATCH_PREFIX)
|
|
{
|
|
pfnMatchingFunction = MatchPrefix;
|
|
}
|
|
else
|
|
{
|
|
pfnMatchingFunction = MatchExactly;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Print object's type and size
|
|
//
|
|
dprintf(
|
|
"%s@0x%X (%lu Bytes)\n",
|
|
pType->szName,
|
|
uAddr,
|
|
pType->cbSize
|
|
);
|
|
|
|
//
|
|
// Run through all the fields in this type, and if the entry is selected,
|
|
// we will display it.
|
|
//
|
|
{
|
|
STRUCT_FIELD_INFO *pField = pType->rgFields;
|
|
for (;pField->szFieldName; pField++)
|
|
{
|
|
bool fMatch = !szFieldSpec
|
|
|| pfnMatchingFunction(szFieldSpec, pField->szFieldName);
|
|
if (fMatch)
|
|
{
|
|
UINT_PTR uFieldAddr = uAddr + pField->uFieldOffset;
|
|
|
|
// special-case small fields...
|
|
if (pField->uFieldSize<=sizeof(ULONG_PTR))
|
|
{
|
|
|
|
ULONG_PTR Buf=0;
|
|
BOOL fRet = dbgextReadMemory(
|
|
uFieldAddr,
|
|
&Buf,
|
|
pField->uFieldSize,
|
|
(char*)pField->szFieldName
|
|
);
|
|
if (fRet)
|
|
{
|
|
// print it as a hex number
|
|
|
|
MyDbgPrintf(
|
|
"\n%s\t[%lx,%lx]: 0x%lx",
|
|
pField->szFieldName,
|
|
pField->uFieldOffset,
|
|
pField->uFieldSize,
|
|
Buf
|
|
);
|
|
|
|
//
|
|
// If it's an embedded object and it's a bitfield,
|
|
// print the bitfields...
|
|
//
|
|
if ( FIELD_IS_EMBEDDED_TYPE(pField)
|
|
&& TYPEISBITFIELD(pField->pBaseType) )
|
|
{
|
|
DumpBitFields(
|
|
Buf,
|
|
pField->pBaseType->rgBitFieldInfo
|
|
);
|
|
|
|
}
|
|
|
|
MyDbgPrintf("\n");
|
|
|
|
}
|
|
continue;
|
|
}
|
|
|
|
#if 0
|
|
MyDbgPrintf(
|
|
"%s\ndc 0x%08lx L %03lx %s\n",
|
|
pField->szSourceText,
|
|
uFieldAddr,
|
|
pField->uFieldSize,
|
|
pField->szFieldName
|
|
);
|
|
#else // 1
|
|
MyDbgPrintf(
|
|
"\n%s\t[%lx,%lx]\n",
|
|
pField->szFieldName,
|
|
pField->uFieldOffset,
|
|
pField->uFieldSize
|
|
);
|
|
#endif // 1
|
|
|
|
// if (szFieldSpec)
|
|
{
|
|
#if 0
|
|
MyDumpObjects(
|
|
pCmd,
|
|
pgi->pBaseType,
|
|
pgi->uAddr,
|
|
pgi->cbSize,
|
|
pgi->szName
|
|
);
|
|
#endif // 0
|
|
DumpMemory(
|
|
uFieldAddr,
|
|
pField->uFieldSize,
|
|
0,
|
|
pField->szFieldName
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
DECLARE_API( help )
|
|
{
|
|
do_help(args);
|
|
}
|
|
|
|
|
|
DECLARE_API( aac )
|
|
{
|
|
do_aac(args);
|
|
}
|
|
|
|
ULONG
|
|
NodeFunc_DumpAddress (
|
|
UINT_PTR uNodeAddr,
|
|
UINT uIndex,
|
|
void *pvContext
|
|
)
|
|
{
|
|
MyDbgPrintf("[%lu] 0x%08lx\n", uIndex, uNodeAddr);
|
|
return 0;
|
|
}
|
|
|
|
UINT
|
|
WalkList(
|
|
UINT_PTR uStartAddress,
|
|
UINT uNextOffset,
|
|
UINT uStartIndex,
|
|
UINT uEndIndex,
|
|
void *pvContext,
|
|
PFNNODEFUNC pFunc,
|
|
char *pszDescription
|
|
)
|
|
//
|
|
// Visit each node in the list in turn,
|
|
// reading just the next pointers. It calls pFunc for each list node
|
|
// between uStartIndex and uEndIndex. It terminates under the first of
|
|
// the following conditions:
|
|
// * Null pointer
|
|
// * ReadMemoryError
|
|
// * Read past uEndIndex
|
|
// * pFunc returns FALSE
|
|
//
|
|
{
|
|
UINT uIndex = 0;
|
|
UINT_PTR uAddress = uStartAddress;
|
|
BOOL fRet = TRUE;
|
|
UINT uRet = 0;
|
|
|
|
|
|
//
|
|
// First skip until we get to uStart Index
|
|
//
|
|
for (;fRet && uAddress && uIndex < uStartIndex; uIndex++)
|
|
{
|
|
fRet = dbgextReadUINT_PTR(
|
|
uAddress+uNextOffset,
|
|
&uAddress,
|
|
pszDescription
|
|
);
|
|
}
|
|
|
|
|
|
//
|
|
// Now call pFunc with each node
|
|
//
|
|
for (;fRet && uAddress && uIndex <= uEndIndex; uIndex++)
|
|
{
|
|
uRet = pFunc(uAddress, uIndex, pvContext);
|
|
|
|
fRet = dbgextReadUINT_PTR(
|
|
uAddress+uNextOffset,
|
|
&uAddress,
|
|
pszDescription
|
|
);
|
|
}
|
|
|
|
pFunc = NodeFunc_DumpAddress;
|
|
return uRet;
|
|
}
|