%ì Librarian T09-20HÂÌV?J®P÷ØV?J®RìS5ôALIGNˆCANCEL PCHECK$CREATEüDEFINEDELETEðDEPOSIT°EVALUATE$ŽEXAMINE',EXIT(: expressions+zHELP-´INSERT3:mode6lREPLACE>¼SETJøSHOWMÂUPDATENðVERIFY ­÷§,‘Ÿ1 ALIGNAUse ALIGN to allocate space for the default patch area in imageAfiles that have not been patched previously or to advance theAstarting address of the current patch area to the first freeAbyte, aligned on the requested boundary (byte, word, longword,Aquadword, or page), and to equate a symbolic name to thatAaddress. Once you define the symbolic name, you can use it in place of the address it denotes.AWhen you specify ALIGN, none of the patch area between the oldApatch area address and the aligned patch area address isAcataloged by PATCH. You must keep track of the disjointed patcharea.Format: ALIGN symbol-namePrompts: NAM> symbol-name 2 Parameters symbol-nameF Specifies a 1- to 31-character symbol. It must start with anF alphabetic character, and consist of alphanumeric characters,; dollar signs ($), underscores (_), and/or periods (.).F If you specify a symbol name for an address that has beenF previously assigned a symbol name, the newest symbol name takes precedence. 2 Qualifiers/BYTEF Defines the symbol as the first free byte of the current patchF area. If the current patch area is the default patch area andF has not been used previously, PATCH allocates the first block of the default patch area./WORDF Advances the starting address of the current patch area to the  first free word boundary./LONGF Advances the starting address of the current patch area to the" first free longword boundary./QUADF Advances the starting address of the current patch area to the" first free quadword boundary./PAGEF Advances the starting address of the current patch area to the first free page boundary.ww­—›¨,‘Ÿ1 CANCELIThe CANCEL commands allows the user to reinstate initial defaults for the8various display and addressing characteristics of PATCH.2 MODEF Use the CANCEL MODE to control the syntax of commands you enterF and the values PATCH displays. CANCEL MODE cancels the currentF mode settings and reinstates the initial default mode settings.F The initial default mode settings are: NOINSTRUCTION, NOASCII,6 SYMBOLS, HEXADECIMAL, LONG, NOGLOBALS, and SCOPE.Format: CANCEL MODE2 MODULEF Use CANCEL MODULE to remove local symbol information fr om PATCH'sF symbol table; this command does not remove global symbols, patchF area symbols, universal symbols, or symbols you defined with the DEFINE command.F If the current scope is the name of the module that you specifyF with the CANCEL MODULE command, the scope is reset to the null string ().Format:% CANCEL MODULE module-name [,...]Prompts: NAM> module-name 3 Parameters module-nameF Specifies the name of one or more modules whose local symbols are) to be removed from the symbol table.D Do not specify a module name if you include the /ALL qualifier. 3 Qualifiers/ALL@ Removes all local symbol information from the symbol table. 2 PATCH_AREAF Use CANCEL PATCH_AREA to reset the current patch area from aF user-defined patch area to the default patch area. Any patchF space needed thereafter will be taken from the default patch area5 until the next SET PATCH_AR EA command is issued.F The CANCEL PATCH_AREA command is used primarily when you haveF issued the SET PATCH_AREA command to establish a user-definedF patch area as the current patch area. After you have insertedF the necessary patch information into that area, type CANCEL8 PATCH_AREA to resume use of the default patch area.Format: CANCEL PATCH_AREA2 SCOPEF Use CANCEL scope and to cancel the current symbolic scope and* reset it to the null string ().Format: CANCEL SCOPEww­—›¨,‘Ÿ1 CHECKJVerifies the application of the patches associated with a given ECO level.2 ECOF Use CHECK ECO to verify that the patches represented by one orF more ECO levels have been applied to the image file. RememberF that an ECO level is not applied until the patch that itF represents is terminated by the UPDATE command. For example, ifF you define an EC O level with the SET ECO command, thenF immediately check to see whether the ECO level is applied, PATCHF returns an error message indicating that the ECO level is not applied.F When you issue the CHECK ECO command, you do not have to list allF the ECO levels that have been applied to a particular image file.F However, specifying one or more ECO levels that have not been+ applied will produce an error message.Format:, CHECK ECO eco-level [:eco-level] [,...]Prompts: ECO> eco-level 3 Parameters eco-levelF Indicates one or more ECO levels that have been applied. ECO levels can be entered in:" o Comma-separated lists# o Colon-separated rangesF Both comma-separated lists and colon-separated ranges can beF specified on the initial command line. However, only one ECOF level or one range of ECO levels can be entered in response to an ECO level prompt (ECO>). 2 NOT ECOF Use CHECK NOT ECO to check that one or more ECO levels are2 available for use in a particular image file.F The CHECK NOT ECO command is the negation of the CHECK ECOF command. It too can be used to confirm that a particular patchF has been applied to an image file. Typically, however, the CHECKF NOT ECO command is used to confirm the ECO levels that are1 available for use in the current image file.Format:0 CHECK NOT ECO eco-level [:eco-level] [,...]Prompts: ECO> eco-level 3 Parameters eco-levelF Indicates the ECO levels that are not in use. ECO levels can be entered in:" o Comma-separated lists# o Colon-separated rangesF Both comma-separated lists and colon-separated ranges can beF entered on the initial command. However, only one ECO level orF one range of ECO levels can be entered in response to an ECO level prompt (ECO>).ww­7"ª,‘Ÿ1 CREATEAUse CREATE to create a command procedure that contains all PATCH8commands successfully executed after the CREATE command.AWhen you use CREATE to create a command procedure, PATCHAautomatically inserts, as the first entry in the commandAprocedure, the name of the image file that will incorporate theApatches. All symbolic names are converted to absolute values,Aand all command names and qualifiers are  truncated to theirshorthand notation.AYou can issue only one CREATE command per PATCH session. ToAcreate another command procedure, close the input image file andthen reopen it.ATo process the patches contained in the command procedure, issuethe following DCL command: $ PATCH @file-specAIn the above command line, the file-spec represents the>specification of the command procedure containing the patches.Format: CREATE [file-spec] 2 Parameters file-specF Represents the file specification of the command procedure. The syntax is as follows:5 device:[directory]filename.filetype;versionF You can omit all or some of the fields in the command procedureF file specification. PATCH uses the default values listed below for omitted fields.8 Field Default ValueC device:[directory] The process's current default device and$  directory7 filename The name of input image file filetype .COM; version V04-000 greater than the highest= command procedure of the same nameww­7"ª,‘Ÿ1 DEFINEAUse DEFINE to equate a symbolic name to a value. Once theAassignment has been performed, you can specify the symbolic nameAin place of the value it denotes for the duration of the PATCHsession.AWhen you use  the DEFINE command to create symbolic names, PATCHAalways searches the symbol table for these symbolic names firstAwhen it translates a symbol into a value. More than one symbolic'name can be assigned to a single value.? You can redefine a symbolic name to represent a new value.= Two restrictions apply to the use of the DEFINE command:< o You cannot equate a symbolic name to a pathnameF o You cannot specify the /INSTRUCTION or /ASCII modeF qualifiers, nor can you set the INSTRUCTION or ASCII: modes, when equating a symbol name to a valueFormat:: DEFINE symbol-name = value [,symbol-name = value,...]Prompts: NAM> symbol-name VAL> valueFIf you enter the symbol name on the initial command line, you must"also enter the value on that line. 2 Parameters symbol-nameF Specifies a 1- to 31-character user-defined symbol to beF associated with the specified value. The symbol name must startF with an alphabetic character, and can consist of alphanumericI characters, dollar signs ($), underscores (_), and/or periods (.). E (PATCH does not distinguish between uppercase and lowercase E letters; that is, the value ABC is equivalent to the value abc.)* The symbol name cannot be a pathname.valueF Specifies a numeric address or symbolic expression that is to be* assigned the specified symbolic name.ww­7"ª,‘Ÿ1 DELETEAUse DELETE to delete an instruction or data from one location orAfrom several consecutive locations in terms of the current mode settings.AWhen you use the DELETE command to delete instructions, theAinstructions are replaced with NOP instructions. When you useAthe DELETE command to delete ASCII and numeric data, the data isreplaced with zeros.Format:. DELETE location = current-contents [,...]- Mode Qualifiers  Defaults- ____ __________ ________ /BYTE* /WORD /LONG /LONG /OCTAL1 /DECIMAL /HEXADECIMAL /HEXADECIMAL- /[NO]ASCII /NOASCII3 /[NO]INSTRUCTION /NOINSTRUCTION- /[NO]SYMBOLS /SYMBOLS/ /[NO]GLOBALS /NOGLOBALS+ /[NO]SCOPE /SCOPEPrompts: LOC> location OLD> current-contents 2 ParameterslocationF Specifies either (1) a single location whose contents are to beF deleted or (2) the starting address of a sequence of locations& whose contents are to be deleted.current-contentsF Specifies one or more data entries or instructions to be deleted.F The data or instructions you specify must be the actual contents.F Do not specify conflicting data types within a single DELETE command.ww­7"ª,‘ Ÿ 1 DEPOSITAUse DEPOSIT to deposit new data or instructions into one or moreconsecutive locations. Depositing Data or Instructions: __________ ____ __ _____________> The DEPOSIT command lets you replace the contents of aA location or of several consecutive locations in terms of the? current mode settings. The DEPOSIT command does notC request verification of the current contents before replacingH the contents with new data or instructions (that is,  this commandG assumes that you know what you are doing). In cases when you wantG to confirm that data or instructions that will be overwritten, use the REPLACE command.F When you are adding instructions to an image file, the INSERTF command, which performs automatic branching to and from the patch area, is easier to use.2Depositing Data or Instructions into Patch Area: 0__________ ____ __ ____________ ____ _____ _____E The /PATCH_AREA qualifier  causes the data or instructions to be J inserted into the current patch area. The location you supply must I be the first free byte in the patch area. To determine the first J free byte in the patch area, issue the SHOW PATCH_AREA commandG or the ALIGN/BYTE command. After you deposit the data, PATCH K updates the patch area string descriptor to reflect the modifications.F Unlike the INSERT and REPLACE commands, the DEPOSIT/PATCH_AREAF command requires that you insert the branch instructions into theF appropriate locations to maintain the logical flow of program* execution to and from the patch area.Format:+ DEPOSIT location = new-contents [,...]2 Mode Qualifiers Defaults2 ____ __________ ________ /BYTE/ /WORD /LONG /LONG /OCTAL6 /DECIMAL /HEXADECIMAL /HEXADECIMAL2 /[NO]ASCII /NOASCII8 /[NO]INSTRUCTION /NOINSTRUCTION2 /[NO]SYMBOLS /SYMBOLS4 /[NO]GLOBALS /NOGLOBALS0 /[NO]SCOPE /SCOPEPrompts: LOC> location NEW> new-contents 2 ParameterslocationF Specifies either (1) a single location whose contents are to beF overwritten or (2) the starting address of a se quence of4 locations whose contents are to be overwritten. new-contentsF Specifies one or more data entries or instructions to beF inserted. Do not enter conflicting data types with a single DEPOSIT command. 2 Qualifiers /PATCH_AREAF Signals PATCH to deposit the data or instructions into the< current patch area, starting at the specified location.ww­ר«,‘Ÿ 1 EVALUATE.Use EVALUATE to evaluate one of the following:!# o Arithmetic expressions o Values' o Variable-length bit fields"Evaluating Arithmetic Expressions:"__________ __________ ____________D Use the EVALUATE command to perform binary and unary arithmetic operations.F The EVALUATE command interprets expressions and displays results+ in the current length and radix modes.Evaluating Values:__________ _______E Use the EVALUATE command to determine the value associated with D" a symbol or pathname. The values are displayed in terms of the+ current length and radix mode setting.&Evaluating Variable-Length Bit Fields:&__________ _______________ ___ _______B Use the EVALUATE command to display the current contents of aD specific bit field in a value. The syntax for this command is:+ EVALUATE value F The bit position delimiters (high-bit and low-bit) are specified as decimal integers.F Bit positions# range from 0 (least significant bit) to 31 (mostF significant bit). PATCH extracts the contents of the bitF positions and reports the contents in longword representation andF in terms of the current radix setting. The current length modeF is ignored. Note that ASCII mode and INSTRUCTION mode cannot be2 set when you evaluate selected bit positions.Format: EVALUATE expression [,...]1 Mode Qualifiers Default $ /BYTE/ /WORD /LONG /LONG /OCTAL6 /DECIMAL /HEXADECIMAL /HEXADECIMAL2 /[NO]ASCII /NOASCII8 /[NO]INSTRUCTION /NOINSTRUCTION4 /[NO]GLOBALS /NOGLOBALS0 /[NO]SCOPE /SCOPEPrompts: EXP> expression 2 Parameters expressionF Indicates an arithmetic expression, a val%ue and corresponding bitF field, or a literal value that is to be evaluated in terms of the current mode settings.ww­ר«,‘Ÿ 1 EXAMINEAUse EXAMINE to display the contents of the specified locations in#terms of the current mode settings.AYou can also use the EXAMINE command to examine the contents of aAbranch instruction or the contents of an address displayed inAresponse to the previous EXAMINE command. To do so, you use thebackslash operator (\).&Format:( EXAMINE location [:location] [,...]2 Mode Qualifiers Defaults2 ____ __________ ________ /BYTE/ /WORD /LONG /LONG /OCTAL6 /DECIMAL /HEXADECIMAL /HEXADECIMAL2 /[NO]ASCII /NOASCII8 /[NO]INSTRUCTION /NOINSTRUCTION2 /[NO]SYMBOLS '/SYMBOLS4 /[NO]GLOBALS /NOGLOBALS0 /[NO]SCOPE /SCOPE 2 ParameterslocationF Specifies one or more locations whose contents are to beF displayed. Multiple locations can be specified in aF comma-separated list or colon-separated range. BothF comma-separated lists and colon-separated ranges can be specified on a single command line.F The location parameter can also be (represented by the backslashF operator (\). This operator is used to observe the contents of< the location displayed in the previous EXAMINE command.F If you do not supply a location, the contents of the next+ sequential location will be displayed.ww­w/­,‘Ÿ1 EXITAUse EXIT to terminate a repetitive prompt such as NEW>, OLD>, orAECO>, or to terminate a PATCH session and pass control back toAthe command interpreter. You can also s)pecify CTRL/Z toAterminate a PATCH session. Issue CTRL/Z in response to the PATCHprompt (PATCH>).ADo not type EXIT in response to the value prompt (VAL>) for theADEFINE command. For this command, only the name prompt (NAM>)recognizes the EXIT command.Format: EXITww­w/­,‘Ÿ 1 expressionsFSpecial operators may be used to reduce expressions in PATCH commands.FThe special operators are presented in two tables. One for Arithmetic*expressions and *the second for Addressing.@Note: PATCH normally evaluates expressions from right to left. ) No arithmetic prececedence is performed.-Special operators for ARITHMETIC expressions:Operator Name Function/ + Addition Addition operator in arithmetic# expressions or unary plus sign5 - Subtraction Subtraction operator in arithmetic% expressions or unary minus sign.; * Multiplication Multiplication operator in arithmetic expressions./ / Divisi+on Division operator in arithmetic expressions.* @ Shift Shift operator in arithmetic expressions.4 < > Precedence Precedence operator in arithmetic( expressions or Bit field delimeters for the EVALUATE command.. ^ Radix Radix operator for, Hexadecimal,( Decimal, Octal, or Binary notation.!Special operators for ADDRESSING:Operator Name Function7 . Current location Address of the current location.9 ^ Previous location Addres,s of the previous location.7 : Range operator Range operator for the CHECK ECO,! CHECK NOT ECO, EVALUATE, and EXAMINE commands.> \ Indirection operator Displays either the contents of the# location specified in a branch' instruction or the value stored in) an address specified in the previous EXAMINE command.ww­w/­,‘Ÿ1 HELPGThe VAX/VMS Image File Patch Utility (PATCH) allows you to make changesJto an image file in the form o-f patches. You can then run the new versionLof the image without having to compile, assemble, or link the program sourcefiles.CUse the HELP command to get additional information on the followingPATCH commands:? ALIGN CANCEL CHECK CREATE DEFINE DELETE9 DEPOSIT EVALUATE EXAMINE EXIT expressions= HELP INSERT mode REPLACE SET SHOW UPDATE VERIFYFormat: HELP topic [subtopic...]@where topic specifies the .name of the command for which you need@help, and subtopic identifies a particular qualifier, parameter,<or command keyword about which you want further information.ww­w/­,‘Ÿ1 INSERTAUse INSERT to insert VAX/VMS MACRO instructions into specificAlocations within an image file. To use this command, you mustAspecify the /INSTRUCTION qualifier or you must set theAINSTRUCTION mode. To insert additional data into a patch area,#use the DEPOSIT/PATCH_AREA c /ommand.ABefore inserting the new instruction, the INSERT command confirmsAthe contents of the location preceding the insertion (that is,that current instruction).AWhen the INSERT command is executed, it replaces the currentAinstruction with a branch instruction and places the currentAinstruction and the new instructions in the current patch area.AThe last new instruction is always followed by a branchAinstruction that redirects the flow of execution back 0 to theAinline code. The INSERT command automatically generates branch instructions.AAfter the insertion of new instructions, the patch area string3descriptor is updated to reflect the modifications.AIf the branch instruction to the patch area is longer than theAcurrent instruction, additional instructions following theAcurrent instruction are also moved to the patch area, and theAbranch instruction is deposited in the vacated memory locations.AUnused memor 1y locations are filled with NOP instructions. If theAcurrent instruction is longer than the branch instruction, the9unused memory locations are filled with NOP instructions.APATCH calculates the relative displacements for the branchAinstructions it generates and recalculates the relativeAdisplacements for all branch-type instructions moved to the patchAarea. Instructions and data moved to patch area may, however, beAreferenced by instructions not affected by the m2ove. Note thatAPATCH does not recalculate any relative displacements in theunaffected instructions.ANote also that if PATCH moves an instruction with a currentAaddress defined by a symbolic instruction label, you must check.and correct any references made to that label.Format:* INSERT location = current-instruction new-instruction . . .2 Mode Qualifiers Defaults2 ____ _________3_ ________ /OCTAL6 /DECIMAL /HEXADECIMAL /HEXADECIMAL8 /[NO]INSTRUCTION /NOINSTRUCTION2 /[NO]SYMBOLS /SYMBOLS4 /[NO]GLOBALS /NOGLOBALS0 /[NO]SCOPE /SCOPEPrompts: LOC> location OLD> current-instruction NEW> new-instruction 2 ParameterslocationF Specifies the address after which one or more 4 new instructions are to be added.current-instructionF Specifies the instruction currently occupying the specified location.new-instructionF Specifies one or more new instructions to be inserted into the2 image file following the current instruction.ww­Wñ,‘Ÿ1 mode qualifiers7 Category Mode Default Description7 ________ ____ _______ ___________E /ASCII Contr 5ols whether data is acceptedD /NOASCII [D] and displayed as ASCII charactersE Context /INSTRUCTION Controls whether data is acceptedF /NOINSTRUCTION [D] and displayed as VAX/VMS MACRO0 instructions.E /SYMBOLS [D] Controls whether addresses areE /NOSYMBOLS reported by pathnames or symbols@ rather than numeric address 6esE /OCTAL Determines the base in whichE Radix /DECIMAL numeric addresses and data are< /HEXADECIMAL [D] interpreted and displayedE /BYTE Determines the length in whichE Length /WORD numeric data is accepted and, /LONG [D] displayed> /GLOBALS Allows the use of a symbolic entryE /NOGLOBALS [D] 7 ( exactly as entered ) is used asC Symbol the first or last pathname in a * Search search.E /SCOPE [D] Controls whether scope's contri-E /NOSCOPE bution to a pathname is used to2 find locations.ww­Wñ,‘Ÿ 1 REPLACEAUse REPLACE to replace the contents of one or more locations withAnew instructions or data in terms of the cur 8rent mode settings.ABefore performing the replacement, the REPLACE command confirms(the contents of the specified locations.Replacing Instructions:_________ _____________G When you replace instructions and the new instructions occupy moreH bytes in memory than the current instructions, the new instructionsH are moved to the patch area and PATCH generates branch instructionsJ to maintain the program's logical flow of execution. PATCH generatesJ branch instructio 9ns for the REPLACE command the same way that it doesP for the INSERT command. All unused bytes are filled with NOP instructions.F If the patch area is used to accommodate the new contents, theF patch area string descriptor is updated to reflect the modifications.Replacing Data:_________ _____F When you replace ASCII or numeric data, the number of replacementG entries cannot exceed the number of existing entries. This means,E for example, :that if you confirm the contents of six consecutiveI locations, you can replace the contents of only those six locations.E If the number of replacement entries is less than the number of E existing entries, the remaining locations are filled with zeros.F In addition, PATCH truncates replacement entries if they exceedF the limit imposed on them by the current length mode. For ASCIIF characters, the right-most characters are discarded. For numeric. data, the ; left-most digits are discarded.ACalculating Relative Displacements for Branch Instructions:A___________ ________ _____________ ___ ______ _____________F PATCH calculates the relative displacements for the branchF instructions it generates and recalculates the relativeF displacements for all branch-type instructions moved to the patchF area. Instructions and data moved to the patch area may beF referenced by instructions not affected < by the move. Note thatF PATCH does not recalculate the relative displacement values in! the unaffected instructions.F Note also that if PATCH moves an instruction with a currentF address defined as a symbolic label, you must check and correctF any references made to that label. PATCH confirms that one orF more consecutive locations contain the contents supplied; then- replaces the contents with new contents.Format:/ REPLACE locatio=n = current-contents [,...] new-contents . . .1 Mode Qualifiers Default1 ____ __________ _______ /BYTE/ /WORD /LONG /LONG /OCTAL6 /DECIMAL /HEXADECIMAL /HEXADECIMAL2 /[NO]ASCII /NOASCII8 /[NO]INSTRUCTION /NOINSTRUCTION2 > /[NO]SYMBOLS /SYMBOLS4 /[NO]GLOBALS /NOGLOBALS0 /[NO]SCOPE /SCOPEPrompts: LOC> location OLD> current-contents NEW> new-contents 2 ParameterslocationF Specifies either (1) a single location whose contents are to beF replaced or (2) the starting address of a sequence of locations' whose contents are to be replaced.current-contentsF Specifies one or more data entri?es or instructions to beF replaced. The data or instructions you specify must be the actual contents.F Do not specify conflicting data types within a single REPLACE command. new-contentsF Specifies one or more data entries or instructions that are to" replace the current contents.F Do not specify conflicting data types within a single REPLACE command.ww­÷I³,‘Ÿ1 SET?The SET commands allow the user to mod @ify the PATCH evironment.2 ECO? Use SET ECO to define the ECO level for the ensuing patch.F Whenever you apply a patch to an image file, the first commandF you type should be a SET ECO command. This command provides youF with a way to identify your patches easily. More important,F however, it lets you process selected patches using a commandF procedure. When PATCH processes a command procedure, it searchesF the file for ECO levels and A processes only those patchesF represented by the specified ECO levels. Patches not represented% by ECO levels are not processed.F You can issue as many SET ECO commands as necessary during aF PATCH session; however, once you specify an ECO level, thatF level can never be used again for that particular image file.F Furthermore, whenever you begin a patch with a SET ECO command,F you must also terminate the patch with the UPDATE command. IfBF you fail to issue the UPDATE command (1) the ECO level specifiedF with the SET ECO command is not applied (hence, the patch is notF applied to the image file), and (2) you cannot issue another SET ECO command.Format: SET ECO eco-levelPrompts: ECO> eco-level 3 Parameters eco-levelF Specifies a decimal integer between 1 and 128, inclusive. ECO7 levels outside this range of integers are illegal.2 MODEF Use SET MODE to specCify default settings for the entry and display modes.Format: SET MODE mode [,...]Prompts: NEW> mode 3 ParametersmodeF Specifies one or more modes from the context, radix, length, and symbol search 1mode categories to be established as the currentF modes. These modes determine how PATCH interprets entries and displays output.F The commands that are affected by the entry and display modes areE DELETE, DEPOSIT, EVAL DUATE, EXAMINE, INSERT, REPLACE, and VERIFY.B See HELP MODE QUALIFIERS. Strip off the leading "/" from the7 qualifier name for use with the SET MODE command. G You can override a mode setting by specifying a mode qualifier with other PATCH commands.2 MODULEF Use SET MODULE to enter local symbol information from theF specified modules into PATCH's symbol table (provided youF followed the rules for passing local symbol informatiEon toF PATCH). If the symbol table is too small to accommodate theF local symbol information, PATCH displays an error message. IfF you are patching a shareable image, no local or global symbolF information is passed to PATCH; only universal symbols can be accessed.Format:" SET MODULE module-name [,...]Prompts: NAM> module-name 3 Parameters module-nameF Specifies the name of one or more modules whose local symbols are' tFo be entered in the symbol table.D Do not specify a module name if you include the /ALL qualifier. 3 Qualifiers/ALLF Requests that local symbol information from all the modules in3 the image file be entered in the symbol table. 2 PATCH_AREAF Use SET PATCH_AREA to override the use of PATCH's default patchF area in favor of a patch area you defined at assembly or compileF time. Whenever you use a user-defined patch area, its patch areaJ descriptoGr is updated to reflect any modifications. More informationJ on PATCH_AREA can be found in The VAX/VMS Utilities Reference Volume.Format:K SET PATCH_AREA [/INITIALIZE=size_expression] address_of_string_descriptorPrompts: [NEW> size_expression]# NEW> address_of_string_descriptor3 /INITIALIZE=size_expressionG The /INITIALIZE qualifier allows the user to predeclare patch areaG in a program without the neccessity of creating a patch area desc-H riptor. Th He patch area size is declared in bytes. If the value ofI the size argument is specified as 0 or is greater than the number ofE bytes contained in the patch area, PATCH will assume the defaultI size to be the maximum number of bytes contained in the patch area'sJ image section. An informational message will be issued to notify theI user that PATCH has taken this action. /INITIALIZE must precede the" address_of_string_descriptor. 3 Parametersaddress-of-string-IdescriptorF Defines the address of the patch area descriptor. The patch areaF descriptor can be represented as a symbolic or a numeric address.size_expressionL The size in bytes of the patch area. This may be any valid expression, symbolic or numeric value.2 SCOPEF Use SET SCOPE to establish the specified module name (and routineF name, if specified) as the explicit scope to be used for3 translating pathnames and symbols into values.F IJf the local symbols in a specific module have not been enteredF in the symbol table by the SET MODULE command, the SET SCOPEF command forces those symbols into the table. If the symbol tableF is too small to accommodate this information, PATCH issues an error message.F Use the SHOW MODULE command to determine the modules to which the scope can be set.Format:1 SET SCOPE module-name [\routine-name [\...]]Prompts:! NEW> module-name [\routKine-name] 3 Parameters module-nameF Specifies the name of the module to which the scope is to be set. routine-nameF Specifies the name of a routine contained in the module to which the scope is to be set.ww­wd¹,‘Ÿ1 SHOWIThe SHOW commands allow the user to examine the current environment which%PATCH is using for entry and display.2 MODE> Use SHOW MODE to report the modes that are currently set.F This command is used primarily withL the SET MODE and/or CANCELF MODE commands. It indicates the condition of the current modes,= enabling you to change one or more of them if necessary.F When you issue the SHOW MODE command, the mode values are always$ displayed in lowercase letters.Format: SHOW MODE2 MODULEF Use SHOW MODULE to request PATCH to display all the modules inF the image file and indicate whether the symbols contained in theF modules are available for use. TMhis command also indicates theF amount of symbol table space required by each module and routineF and the total amount of unused space remaining in the symbol table.F The SHOW MODULE command reports an informational error message if5 no local symbol information was passed to PATCH.Format: SHOW MODULE 2 PATCH_AREAF Use SHOW PATCH_AREA to report the size and starting address ofF the current patch area in hexadecimal representation, reNgardless" of the current radix setting.Format: SHOW PATCH_AREA2 SCOPE1 Use SHOW SCOPE to display the current scope.Format: SHOW SCOPEww­wd¹,‘Ÿ1 UPDATE.Use UPDATE to apply a patch to the image file.AThe UPDATE command is a patch terminator. This command appliesAthe previous patch to the image file and creates an output imageAfile. If you fail to issue the UPDATE command, no output imagefile is created.ADuring a sinOgle execution of PATCH, you can specify the UPDATEAcommand more than once. The first UPDATE command specifiedAcreates a new output image file. Subsequent UPDATE commandsA(specified during that PATCH session) overwrite the output imageAfile. That is, a new version of the output image file is notcreated.AIf a SET ECO command is issued, a subsequent UPDATE command+automatically sets the ECO level specified.Format: UPDATEww­ëº,‘ PŸ1 VERIFYAUse VERIFY to confirm that a location or several consecutive@locations contain the specified contents (instructions or data).AGenerally, you should use the VERIFY command with the DEPOSITAcommand. The DEPOSIT command does not confirm the entries beforeAoverwriting them. Therefore, to make certain you know theAcontents of the locations that will be modified, issue the VERIFYcommand first.AThe VERIFY command is also useful when you are patching an imagQeAfile by means of a command procedure. Using the VERIFY command,Ayou can check particular locations before attempting to modifyAthem. If the VERIFY command fails, that patch is not applied,Aand PATCH skips to the next SET ECO command. If no other SET ECO4command exists, the command procedure is terminated.Format:. VERIFY location = current-contents [,...]1 Mode Qualifiers Default1 ____ __________ _______ R /BYTE/ /WORD /LONG /LONG /OCTAL6 /DECIMAL /HEXADECIMAL /HEXADECIMAL2 /[NO]ASCII /NOASCII8 /[NO]INSTRUCTION /NOINSTRUCTION2 /[NO]SYMBOLS /SYMBOLS4 /[NO]GLOBALS /NOGLOBALS0 /[NO]SCOPE /SCOPEPrompts: LOC> location OLD> current-contents 2 ParameterslocationF Specifies either (1) a single location whose contents are to beF checked or (2) the starting address of a sequence of locations& whose contents are to be checked.current-contentsF Specifies one or more data entries or instructions to beF verified. The data or instructions you verify must be the actual contents.F Do not specify conflicting data types within a single VERIFY command.ww