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Annotation of ntddk/src/video/displays/vga/debug.c, revision 1.1

1.1     ! root        1: 
        !             2: /******************************Module*Header*******************************\
        !             3: * Module Name: debug.c
        !             4: *
        !             5: * This file is for debugging helper routines and extensions.
        !             6: *
        !             7: * Copyright (c) 1992 Microsoft Corporation
        !             8: \**************************************************************************/
        !             9: 
        !            10: #include <stdio.h>
        !            11: #include <stdarg.h>
        !            12: 
        !            13: #include "driver.h"
        !            14: #include <ntsdexts.h>
        !            15: 
        !            16: #if DBG
        !            17: 
        !            18: ULONG DebugLevel = 0;
        !            19: 
        !            20: #endif // DBG
        !            21: 
        !            22: /*****************************************************************************
        !            23:  *
        !            24:  *   Routine Description:
        !            25:  *
        !            26:  *      This function is variable-argument, level-sensitive debug print
        !            27:  *      routine.
        !            28:  *      If the specified debug level for the print statement is lower or equal
        !            29:  *      to the current debug level, the message will be printed.
        !            30:  *
        !            31:  *   Arguments:
        !            32:  *
        !            33:  *      DebugPrintLevel - Specifies at which debugging level the string should
        !            34:  *          be printed
        !            35:  *
        !            36:  *      DebugMessage - Variable argument ascii c string
        !            37:  *
        !            38:  *   Return Value:
        !            39:  *
        !            40:  *      None.
        !            41:  *
        !            42:  ***************************************************************************/
        !            43: 
        !            44: VOID
        !            45: DebugPrint(
        !            46:     ULONG DebugPrintLevel,
        !            47:     PCHAR DebugMessage,
        !            48:     ...
        !            49:     )
        !            50: 
        !            51: {
        !            52: 
        !            53: #if DBG
        !            54: 
        !            55:     va_list ap;
        !            56: 
        !            57:     va_start(ap, DebugMessage);
        !            58: 
        !            59:     if (DebugPrintLevel <= DebugLevel) {
        !            60: 
        !            61:         char buffer[128];
        !            62: 
        !            63:         vsprintf(buffer, DebugMessage, ap);
        !            64: 
        !            65:         OutputDebugStringA(buffer);
        !            66:     }
        !            67: 
        !            68:     va_end(ap);
        !            69: 
        !            70: #endif // DBG
        !            71: 
        !            72: } // DebugPrint()
        !            73: 
        !            74: 
        !            75: #if DBG
        !            76: 
        !            77: // macros
        !            78: 
        !            79: #define move(dst, src)\
        !            80: try { \
        !            81:     ReadProcessMemory(hCurrentProcess, (LPVOID) (src), &(dst), sizeof(dst), NULL);\
        !            82: } except (EXCEPTION_EXECUTE_HANDLER) {\
        !            83:     return;\
        !            84: }
        !            85: 
        !            86: #define move2(dst, src, bytes)\
        !            87: try {\
        !            88:     ReadProcessMemory(hCurrentProcess, (LPVOID) (src), &(dst), (bytes), NULL);\
        !            89: } except (EXCEPTION_EXECUTE_HANDLER) {\
        !            90:     return;\
        !            91: }
        !            92: 
        !            93: 
        !            94: #endif
        !            95: 
        !            96: 
        !            97: 
        !            98: /******************************Public*Routine******************************\
        !            99: * dumpdsurf
        !           100: *
        !           101: * Displays the contents of a DEVSURF structure
        !           102: *
        !           103: * History:
        !           104: *  Tue 17-Mar-1992 21:26:21 -by- Walt Moore [waltm]
        !           105: * Wrote it.
        !           106: \**************************************************************************/
        !           107: 
        !           108: void dumpdsurf
        !           109: (
        !           110:     HANDLE  hCurrentProcess,
        !           111:     HANDLE  hCurrentThread,
        !           112:     DWORD   dwCurrentPc,
        !           113:     PNTSD_EXTENSION_APIS lpExtensionApis,
        !           114:     LPSTR   lpArgumentString
        !           115: )
        !           116: {
        !           117: 
        !           118: #if DBG
        !           119: 
        !           120:     // NTSD stuff required for output
        !           121: 
        !           122:     PNTSD_OUTPUT_ROUTINE Print;
        !           123:     PNTSD_GET_EXPRESSION EvalExpression;
        !           124:     PNTSD_GET_SYMBOL     GetSymbol;
        !           125: 
        !           126: 
        !           127:     // Local variables needed for our own output
        !           128: 
        !           129:     DEVSURF     dsurf;
        !           130:     PDEVSURF    pdsurf;
        !           131: 
        !           132: 
        !           133:     // Eliminate warnings messages about unused parameters
        !           134: 
        !           135:     hCurrentProcess;
        !           136:     hCurrentThread;
        !           137:     dwCurrentPc;
        !           138:     lpExtensionApis;
        !           139:     lpArgumentString;
        !           140: 
        !           141: 
        !           142:     // Set up function pointers
        !           143: 
        !           144:     Print          = lpExtensionApis->lpOutputRoutine;
        !           145:     EvalExpression = lpExtensionApis->lpGetExpressionRoutine;
        !           146:     GetSymbol      = lpExtensionApis->lpGetSymbolRoutine;
        !           147: 
        !           148: 
        !           149:     // Copy the DEVSURF structure into NTSD's address space
        !           150:  
        !           151:     pdsurf = (PDEVSURF) EvalExpression(lpArgumentString);
        !           152:     move(dsurf, pdsurf);
        !           153: 
        !           154: 
        !           155:     // Now print the device surface
        !           156: 
        !           157:     Print("--------------------------------------------------\n");
        !           158:     Print("DEVSURF 0x%08lx\n", pdsurf);
        !           159:     Print("  ident      %c%c%c%c\n", ((CHAR *)&dsurf.ident)[0],((CHAR *)&dsurf.ident)[1],
        !           160:                                      ((CHAR *)&dsurf.ident)[2],((CHAR *)&dsurf.ident)[3]);
        !           161:     Print("  flSurf     0x%08lx", dsurf.flSurf);
        !           162: 
        !           163:     if (dsurf.flSurf & DS_BRUSH)
        !           164:     {
        !           165:         Print(" a brush");
        !           166: 
        !           167:         if (dsurf.flSurf & DS_SOLIDBRUSH)
        !           168:             Print(", solid color index  of 0x%02lx", (ULONG) dsurf.iColor);
        !           169:         if (dsurf.flSurf & DS_GREYBRUSH)
        !           170:             Print(", gray");
        !           171:         Print("\n");
        !           172:     }
        !           173:     else
        !           174:     {
        !           175:         Print("\n");
        !           176:         Print("iFormat    0x%02lx\n", (ULONG) dsurf.iFormat);
        !           177:         Print("ppdev      0x%08lx\n", (ULONG) dsurf.ppdev);
        !           178:         Print("sizlSurf   (%lu,%lu)\n", dsurf.sizlSurf.cx, dsurf.sizlSurf.cy);
        !           179:         Print("lNextScan  0x%08lx\n", (ULONG) dsurf.lNextScan);
        !           180:         Print("lNextPlane 0x%08lx\n", (ULONG) dsurf.lNextPlane);
        !           181:         Print("pvScan0    0x%08lx\n", (ULONG) dsurf.pvScan0);
        !           182:         Print("pvStart    0x%08lx\n", (ULONG) dsurf.pvStart);
        !           183:         Print("pvConv     0x%08lx\n", (ULONG) dsurf.pvConv);
        !           184:     }
        !           185:     Print("--------------------------------------------------\n");
        !           186: 
        !           187: #endif
        !           188: 
        !           189:     return;
        !           190: }
        !           191: 
        !           192: 
        !           193: 
        !           194: /******************************Public*Routine******************************\
        !           195: * help
        !           196: *
        !           197: * Displays menu of all extensions
        !           198: *
        !           199: * History:
        !           200: *  Tue 17-Mar-1992 21:26:21 -by- Walt Moore [waltm]
        !           201: * Wrote it.
        !           202: \**************************************************************************/
        !           203: 
        !           204: void help
        !           205: (
        !           206:     HANDLE  hCurrentProcess,
        !           207:     HANDLE  hCurrentThread,
        !           208:     DWORD   dwCurrentPc,
        !           209:     PNTSD_EXTENSION_APIS lpExtensionApis,
        !           210:     LPSTR   lpArgumentString
        !           211: )
        !           212: {
        !           213: 
        !           214: #if DBG
        !           215: 
        !           216:     // NTSD stuff required for output
        !           217: 
        !           218:     PNTSD_OUTPUT_ROUTINE Print;
        !           219:     PNTSD_GET_EXPRESSION EvalExpression;
        !           220:     PNTSD_GET_SYMBOL     GetSymbol;
        !           221: 
        !           222: 
        !           223:     // Eliminate warnings messages about unused parameters
        !           224: 
        !           225:     hCurrentProcess;
        !           226:     hCurrentThread;
        !           227:     dwCurrentPc;
        !           228:     lpExtensionApis;
        !           229:     lpArgumentString;
        !           230: 
        !           231: 
        !           232:     // Set up function pointers
        !           233: 
        !           234:     Print          = lpExtensionApis->lpOutputRoutine;
        !           235:     EvalExpression = lpExtensionApis->lpGetExpressionRoutine;
        !           236:     GetSymbol      = lpExtensionApis->lpGetSymbolRoutine;
        !           237: 
        !           238: 
        !           239:     // Now print the help menu
        !           240: 
        !           241:     Print("------------------------------------------------------------------\n");
        !           242:     Print("VGA NTSD Extensions\n");
        !           243:     Print("  dumpsurf <addr> - Display the contents of a DEVSURF structure\n");
        !           244:     Print("------------------------------------------------------------------\n");
        !           245: 
        !           246: #endif
        !           247: 
        !           248:     return;
        !           249: }

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