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  1.  
  2. /******************************************************************************
  3.  *
  4.  * Module Name: asremove - Source conversion - removal functions
  5.  *
  6.  *****************************************************************************/
  7.  
  8. /******************************************************************************
  9.  *
  10.  * 1. Copyright Notice
  11.  *
  12.  * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
  13.  * All rights reserved.
  14.  *
  15.  * 2. License
  16.  *
  17.  * 2.1. This is your license from Intel Corp. under its intellectual property
  18.  * rights.  You may have additional license terms from the party that provided
  19.  * you this software, covering your right to use that party's intellectual
  20.  * property rights.
  21.  *
  22.  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  23.  * copy of the source code appearing in this file ("Covered Code") an
  24.  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  25.  * base code distributed originally by Intel ("Original Intel Code") to copy,
  26.  * make derivatives, distribute, use and display any portion of the Covered
  27.  * Code in any form, with the right to sublicense such rights; and
  28.  *
  29.  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  30.  * license (with the right to sublicense), under only those claims of Intel
  31.  * patents that are infringed by the Original Intel Code, to make, use, sell,
  32.  * offer to sell, and import the Covered Code and derivative works thereof
  33.  * solely to the minimum extent necessary to exercise the above copyright
  34.  * license, and in no event shall the patent license extend to any additions
  35.  * to or modifications of the Original Intel Code.  No other license or right
  36.  * is granted directly or by implication, estoppel or otherwise;
  37.  *
  38.  * The above copyright and patent license is granted only if the following
  39.  * conditions are met:
  40.  *
  41.  * 3. Conditions
  42.  *
  43.  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  44.  * Redistribution of source code of any substantial portion of the Covered
  45.  * Code or modification with rights to further distribute source must include
  46.  * the above Copyright Notice, the above License, this list of Conditions,
  47.  * and the following Disclaimer and Export Compliance provision.  In addition,
  48.  * Licensee must cause all Covered Code to which Licensee contributes to
  49.  * contain a file documenting the changes Licensee made to create that Covered
  50.  * Code and the date of any change.  Licensee must include in that file the
  51.  * documentation of any changes made by any predecessor Licensee.  Licensee
  52.  * must include a prominent statement that the modification is derived,
  53.  * directly or indirectly, from Original Intel Code.
  54.  *
  55.  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  56.  * Redistribution of source code of any substantial portion of the Covered
  57.  * Code or modification without rights to further distribute source must
  58.  * include the following Disclaimer and Export Compliance provision in the
  59.  * documentation and/or other materials provided with distribution.  In
  60.  * addition, Licensee may not authorize further sublicense of source of any
  61.  * portion of the Covered Code, and must include terms to the effect that the
  62.  * license from Licensee to its licensee is limited to the intellectual
  63.  * property embodied in the software Licensee provides to its licensee, and
  64.  * not to intellectual property embodied in modifications its licensee may
  65.  * make.
  66.  *
  67.  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  68.  * substantial portion of the Covered Code or modification must reproduce the
  69.  * above Copyright Notice, and the following Disclaimer and Export Compliance
  70.  * provision in the documentation and/or other materials provided with the
  71.  * distribution.
  72.  *
  73.  * 3.4. Intel retains all right, title, and interest in and to the Original
  74.  * Intel Code.
  75.  *
  76.  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  77.  * Intel shall be used in advertising or otherwise to promote the sale, use or
  78.  * other dealings in products derived from or relating to the Covered Code
  79.  * without prior written authorization from Intel.
  80.  *
  81.  * 4. Disclaimer and Export Compliance
  82.  *
  83.  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  84.  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  85.  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  86.  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  87.  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  88.  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  89.  * PARTICULAR PURPOSE.
  90.  *
  91.  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  92.  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  93.  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  94.  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  95.  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  96.  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  97.  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  98.  * LIMITED REMEDY.
  99.  *
  100.  * 4.3. Licensee shall not export, either directly or indirectly, any of this
  101.  * software or system incorporating such software without first obtaining any
  102.  * required license or other approval from the U. S. Department of Commerce or
  103.  * any other agency or department of the United States Government.  In the
  104.  * event Licensee exports any such software from the United States or
  105.  * re-exports any such software from a foreign destination, Licensee shall
  106.  * ensure that the distribution and export/re-export of the software is in
  107.  * compliance with all laws, regulations, orders, or other restrictions of the
  108.  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
  109.  * any of its subsidiaries will export/re-export any technical data, process,
  110.  * software, or service, directly or indirectly, to any country for which the
  111.  * United States government or any agency thereof requires an export license,
  112.  * other governmental approval, or letter of assurance, without first obtaining
  113.  * such license, approval or letter.
  114.  *
  115.  *****************************************************************************/
  116.  
  117. #include "acpisrc.h"
  118.  
  119. /* Local prototypes */
  120.  
  121. void
  122. AsRemoveStatement (
  123.     char                    *Buffer,
  124.     char                    *Keyword,
  125.     UINT32                  Type);
  126.  
  127.  
  128. /******************************************************************************
  129.  *
  130.  * FUNCTION:    AsRemoveStatement
  131.  *
  132.  * DESCRIPTION: Remove all statements that contain the given keyword.
  133.  *              Limitations:  Removes text from the start of the line that
  134.  *              contains the keyword to the next semicolon.  Currently
  135.  *              doesn't ignore comments.
  136.  *
  137.  ******************************************************************************/
  138.  
  139. void
  140. AsRemoveStatement (
  141.     char                    *Buffer,
  142.     char                    *Keyword,
  143.     UINT32                  Type)
  144. {
  145.     char                    *SubString;
  146.     char                    *SubBuffer;
  147.     int                     KeywordLength;
  148.  
  149.  
  150.     KeywordLength = strlen (Keyword);
  151.     SubBuffer = Buffer;
  152.     SubString = Buffer;
  153.  
  154.  
  155.     while (SubString)
  156.     {
  157.         SubString = strstr (SubBuffer, Keyword);
  158.  
  159.         if (SubString)
  160.         {
  161.             SubBuffer = SubString;
  162.  
  163.             if ((Type == REPLACE_WHOLE_WORD) &&
  164.                 (!AsMatchExactWord (SubString, KeywordLength)))
  165.             {
  166.                 SubBuffer++;
  167.                 continue;
  168.             }
  169.  
  170.             /* Find start of this line */
  171.  
  172.             while (*SubString != '\n')
  173.             {
  174.                 SubString--;
  175.             }
  176.             SubString++;
  177.  
  178.             /* Find end of this statement */
  179.  
  180.             SubBuffer = AsSkipPastChar (SubBuffer, ';');
  181.             if (!SubBuffer)
  182.             {
  183.                 return;
  184.             }
  185.  
  186.             /* Find end of this line */
  187.  
  188.             SubBuffer = AsSkipPastChar (SubBuffer, '\n');
  189.             if (!SubBuffer)
  190.             {
  191.                 return;
  192.             }
  193.  
  194.             /* If next line is blank, remove it too */
  195.  
  196.             if (*SubBuffer == '\n')
  197.             {
  198.                 SubBuffer++;
  199.             }
  200.  
  201.             /* Remove the lines */
  202.  
  203.             SubBuffer = AsRemoveData (SubString, SubBuffer);
  204.         }
  205.     }
  206. }
  207.  
  208.  
  209. /******************************************************************************
  210.  *
  211.  * FUNCTION:    AsRemoveConditionalCompile
  212.  *
  213.  * DESCRIPTION: Remove a "#ifdef" statement, and all text that it encompasses.
  214.  *              Limitations: cannot handle nested ifdefs.
  215.  *
  216.  ******************************************************************************/
  217.  
  218. void
  219. AsRemoveConditionalCompile (
  220.     char                    *Buffer,
  221.     char                    *Keyword)
  222. {
  223.     char                    *SubString;
  224.     char                    *SubBuffer;
  225.     char                    *IfPtr;
  226.     char                    *EndifPtr;
  227.     char                    *ElsePtr;
  228.     char                    *Comment;
  229.     int                     KeywordLength;
  230.  
  231.  
  232.     KeywordLength = strlen (Keyword);
  233.     SubBuffer = Buffer;
  234.     SubString = Buffer;
  235.  
  236.  
  237.     while (SubString)
  238.     {
  239.         SubBuffer = strstr (SubString, Keyword);
  240.         if (!SubBuffer)
  241.         {
  242.             return;
  243.         }
  244.  
  245.         /*
  246.          * Check for translation escape string -- means to ignore
  247.          * blocks of code while replacing
  248.          */
  249.         Comment = strstr (SubString, AS_START_IGNORE);
  250.  
  251.         if ((Comment) &&
  252.             (Comment < SubBuffer))
  253.         {
  254.             SubString = strstr (Comment, AS_STOP_IGNORE);
  255.             if (!SubString)
  256.             {
  257.                 return;
  258.             }
  259.  
  260.             SubString += 3;
  261.             continue;
  262.         }
  263.  
  264.         /* Check for ordinary comment */
  265.  
  266.         Comment = strstr (SubString, "/*");
  267.  
  268.         if ((Comment) &&
  269.             (Comment < SubBuffer))
  270.         {
  271.             SubString = strstr (Comment, "*/");
  272.             if (!SubString)
  273.             {
  274.                 return;
  275.             }
  276.  
  277.             SubString += 2;
  278.             continue;
  279.         }
  280.  
  281.         SubString = SubBuffer;
  282.         if (!AsMatchExactWord (SubString, KeywordLength))
  283.         {
  284.             SubString++;
  285.             continue;
  286.         }
  287.  
  288.         /* Find start of this line */
  289.  
  290.         while (*SubString != '\n' && (SubString > Buffer))
  291.         {
  292.             SubString--;
  293.         }
  294.         SubString++;
  295.  
  296.         /* Find the "#ifxxxx" */
  297.  
  298.         IfPtr = strstr (SubString, "#if");
  299.         if (!IfPtr)
  300.         {
  301.             return;
  302.         }
  303.  
  304.         if (IfPtr > SubBuffer)
  305.         {
  306.             /* Not the right #if */
  307.  
  308.             SubString = SubBuffer + strlen (Keyword);
  309.             continue;
  310.         }
  311.  
  312.         /* Find closing #endif or #else */
  313.  
  314.         EndifPtr = strstr (SubBuffer, "#endif");
  315.         if (!EndifPtr)
  316.         {
  317.             /* There has to be an #endif */
  318.  
  319.             return;
  320.         }
  321.  
  322.         ElsePtr = strstr (SubBuffer, "#else");
  323.         if ((ElsePtr) &&
  324.             (EndifPtr > ElsePtr))
  325.         {
  326.             /* This #ifdef contains an #else clause */
  327.             /* Find end of this line */
  328.  
  329.             SubBuffer = AsSkipPastChar (ElsePtr, '\n');
  330.             if (!SubBuffer)
  331.             {
  332.                 return;
  333.             }
  334.  
  335.             /* Remove the #ifdef .... #else code */
  336.  
  337.             AsRemoveData (SubString, SubBuffer);
  338.  
  339.             /* Next, we will remove the #endif statement */
  340.  
  341.             EndifPtr = strstr (SubString, "#endif");
  342.             if (!EndifPtr)
  343.             {
  344.                 /* There has to be an #endif */
  345.  
  346.                 return;
  347.             }
  348.  
  349.             SubString = EndifPtr;
  350.         }
  351.  
  352.         /* Remove the ... #endif part */
  353.         /* Find end of this line */
  354.  
  355.         SubBuffer = AsSkipPastChar (EndifPtr, '\n');
  356.         if (!SubBuffer)
  357.         {
  358.             return;
  359.         }
  360.  
  361.         /* Remove the lines */
  362.  
  363.         SubBuffer = AsRemoveData (SubString, SubBuffer);
  364.     }
  365. }
  366.  
  367.  
  368. /******************************************************************************
  369.  *
  370.  * FUNCTION:    AsRemoveMacro
  371.  *
  372.  * DESCRIPTION: Remove every line that contains the keyword.  Does not
  373.  *              skip comments.
  374.  *
  375.  ******************************************************************************/
  376.  
  377. void
  378. AsRemoveMacro (
  379.     char                    *Buffer,
  380.     char                    *Keyword)
  381. {
  382.     char                    *SubString;
  383.     char                    *SubBuffer;
  384.     int                     NestLevel;
  385.  
  386.  
  387.     SubBuffer = Buffer;
  388.     SubString = Buffer;
  389.  
  390.  
  391.     while (SubString)
  392.     {
  393.         SubString = strstr (SubBuffer, Keyword);
  394.  
  395.         if (SubString)
  396.         {
  397.             SubBuffer = SubString;
  398.  
  399.             /* Find start of the macro parameters */
  400.  
  401.             while (*SubString != '(')
  402.             {
  403.                 SubString++;
  404.             }
  405.             SubString++;
  406.  
  407.             /* Remove the macro name and opening paren */
  408.  
  409.             SubString = AsRemoveData (SubBuffer, SubString);
  410.  
  411.             NestLevel = 1;
  412.             while (*SubString)
  413.             {
  414.                 if (*SubString == '(')
  415.                 {
  416.                     NestLevel++;
  417.                 }
  418.                 else if (*SubString == ')')
  419.                 {
  420.                     NestLevel--;
  421.                 }
  422.  
  423.                 SubString++;
  424.  
  425.                 if (NestLevel == 0)
  426.                 {
  427.                     break;
  428.                 }
  429.             }
  430.  
  431.             /* Remove the closing paren */
  432.  
  433.             SubBuffer = AsRemoveData (SubString-1, SubString);
  434.         }
  435.     }
  436. }
  437.  
  438.  
  439. /******************************************************************************
  440.  *
  441.  * FUNCTION:    AsRemoveLine
  442.  *
  443.  * DESCRIPTION: Remove every line that contains the keyword.  Does not
  444.  *              skip comments.
  445.  *
  446.  ******************************************************************************/
  447.  
  448. void
  449. AsRemoveLine (
  450.     char                    *Buffer,
  451.     char                    *Keyword)
  452. {
  453.     char                    *SubString;
  454.     char                    *SubBuffer;
  455.  
  456.  
  457.     SubBuffer = Buffer;
  458.     SubString = Buffer;
  459.  
  460.  
  461.     while (SubString)
  462.     {
  463.         SubString = strstr (SubBuffer, Keyword);
  464.  
  465.         if (SubString)
  466.         {
  467.             SubBuffer = SubString;
  468.  
  469.             /* Find start of this line */
  470.  
  471.             while (*SubString != '\n')
  472.             {
  473.                 SubString--;
  474.             }
  475.             SubString++;
  476.  
  477.             /* Find end of this line */
  478.  
  479.             SubBuffer = AsSkipPastChar (SubBuffer, '\n');
  480.             if (!SubBuffer)
  481.             {
  482.                 return;
  483.             }
  484.  
  485.             /* Remove the line */
  486.  
  487.             SubBuffer = AsRemoveData (SubString, SubBuffer);
  488.         }
  489.     }
  490. }
  491.  
  492.  
  493. /******************************************************************************
  494.  *
  495.  * FUNCTION:    AsReduceTypedefs
  496.  *
  497.  * DESCRIPTION: Eliminate certain typedefs
  498.  *
  499.  ******************************************************************************/
  500.  
  501. void
  502. AsReduceTypedefs (
  503.     char                    *Buffer,
  504.     char                    *Keyword)
  505. {
  506.     char                    *SubString;
  507.     char                    *SubBuffer;
  508.     int                     NestLevel;
  509.  
  510.  
  511.     SubBuffer = Buffer;
  512.     SubString = Buffer;
  513.  
  514.  
  515.     while (SubString)
  516.     {
  517.         SubString = strstr (SubBuffer, Keyword);
  518.  
  519.         if (SubString)
  520.         {
  521.             /* Remove the typedef itself */
  522.  
  523.             SubBuffer = SubString + strlen ("typedef") + 1;
  524.             SubBuffer = AsRemoveData (SubString, SubBuffer);
  525.  
  526.             /* Find the opening brace of the struct or union */
  527.  
  528.             while (*SubString != '{')
  529.             {
  530.                 SubString++;
  531.             }
  532.             SubString++;
  533.  
  534.             /* Find the closing brace.  Handles nested braces */
  535.  
  536.             NestLevel = 1;
  537.             while (*SubString)
  538.             {
  539.                 if (*SubString == '{')
  540.                 {
  541.                     NestLevel++;
  542.                 }
  543.                 else if (*SubString == '}')
  544.                 {
  545.                     NestLevel--;
  546.                 }
  547.  
  548.                 SubString++;
  549.  
  550.                 if (NestLevel == 0)
  551.                 {
  552.                     break;
  553.                 }
  554.             }
  555.  
  556.             /* Remove an extra line feed if present */
  557.  
  558.             if (!strncmp (SubString - 3, "\n\n", 2))
  559.             {
  560.                 *(SubString -2) = '}';
  561.                 SubString--;
  562.             }
  563.  
  564.             /* Find the end of the typedef name */
  565.  
  566.             SubBuffer = AsSkipUntilChar (SubString, ';');
  567.  
  568.             /* And remove the typedef name */
  569.  
  570.             SubBuffer = AsRemoveData (SubString, SubBuffer);
  571.         }
  572.     }
  573. }
  574.  
  575.  
  576. /******************************************************************************
  577.  *
  578.  * FUNCTION:    AsRemoveEmptyBlocks
  579.  *
  580.  * DESCRIPTION: Remove any C blocks (e.g., if {}) that contain no code.  This
  581.  *              can happen as a result of removing lines such as DEBUG_PRINT.
  582.  *
  583.  ******************************************************************************/
  584.  
  585. void
  586. AsRemoveEmptyBlocks (
  587.     char                    *Buffer,
  588.     char                    *Filename)
  589. {
  590.     char                    *SubBuffer;
  591.     char                    *BlockStart;
  592.     BOOLEAN                 EmptyBlock = TRUE;
  593.     BOOLEAN                 AnotherPassRequired = TRUE;
  594.     UINT32                  BlockCount = 0;
  595.  
  596.  
  597.     while (AnotherPassRequired)
  598.     {
  599.         SubBuffer = Buffer;
  600.         AnotherPassRequired = FALSE;
  601.  
  602.         while (*SubBuffer)
  603.         {
  604.             if (*SubBuffer == '{')
  605.             {
  606.                 BlockStart = SubBuffer;
  607.                 EmptyBlock = TRUE;
  608.  
  609.                 SubBuffer++;
  610.                 while (*SubBuffer != '}')
  611.                 {
  612.                     if ((*SubBuffer != ' ') &&
  613.                         (*SubBuffer != '\n'))
  614.                     {
  615.                         EmptyBlock = FALSE;
  616.                         break;
  617.                     }
  618.                     SubBuffer++;
  619.                 }
  620.  
  621.                 if (EmptyBlock)
  622.                 {
  623.                     /* Find start of the first line of the block */
  624.  
  625.                     while (*BlockStart != '\n')
  626.                     {
  627.                         BlockStart--;
  628.                     }
  629.  
  630.                     /* Find end of the last line of the block */
  631.  
  632.                     SubBuffer = AsSkipUntilChar (SubBuffer, '\n');
  633.                     if (!SubBuffer)
  634.                     {
  635.                         break;
  636.                     }
  637.  
  638.                     /* Remove the block */
  639.  
  640.                     SubBuffer = AsRemoveData (BlockStart, SubBuffer);
  641.                     BlockCount++;
  642.                     AnotherPassRequired = TRUE;
  643.                     continue;
  644.                 }
  645.             }
  646.  
  647.             SubBuffer++;
  648.         }
  649.     }
  650.  
  651.     if (BlockCount)
  652.     {
  653.         Gbl_MadeChanges = TRUE;
  654.         AsPrint ("Code blocks deleted", BlockCount, Filename);
  655.     }
  656. }
  657.  
  658.  
  659. /******************************************************************************
  660.  *
  661.  * FUNCTION:    AsRemoveDebugMacros
  662.  *
  663.  * DESCRIPTION: Remove all "Debug" macros -- macros that produce debug output.
  664.  *
  665.  ******************************************************************************/
  666.  
  667. void
  668. AsRemoveDebugMacros (
  669.     char                    *Buffer)
  670. {
  671.     AsRemoveConditionalCompile (Buffer, "ACPI_DEBUG_OUTPUT");
  672.  
  673.     AsRemoveStatement (Buffer, "ACPI_DEBUG_PRINT",      REPLACE_WHOLE_WORD);
  674.     AsRemoveStatement (Buffer, "ACPI_DEBUG_PRINT_RAW",  REPLACE_WHOLE_WORD);
  675.     AsRemoveStatement (Buffer, "DEBUG_EXEC",            REPLACE_WHOLE_WORD);
  676.     AsRemoveStatement (Buffer, "FUNCTION_ENTRY",        REPLACE_WHOLE_WORD);
  677.     AsRemoveStatement (Buffer, "PROC_NAME",             REPLACE_WHOLE_WORD);
  678.     AsRemoveStatement (Buffer, "FUNCTION_TRACE",        REPLACE_SUBSTRINGS);
  679.     AsRemoveStatement (Buffer, "DUMP_",                 REPLACE_SUBSTRINGS);
  680.  
  681.     AsReplaceString ("return_VOID",         "return", REPLACE_WHOLE_WORD, Buffer);
  682.     AsReplaceString ("return_PTR",          "return", REPLACE_WHOLE_WORD, Buffer);
  683.     AsReplaceString ("return_ACPI_STATUS",  "return", REPLACE_WHOLE_WORD, Buffer);
  684.     AsReplaceString ("return_acpi_status",  "return", REPLACE_WHOLE_WORD, Buffer);
  685.     AsReplaceString ("return_VALUE",        "return", REPLACE_WHOLE_WORD, Buffer);
  686. }
  687.  
  688.  
  689.