10.4.1 #ifdef, #ifndef | Panasonic MN1030 specs

Chapter 10 Writing Assembler Control Statements

10.4.1 #ifdef, #ifndef

Syntax

Syntax for #ifdef		Syntax for #ifndef
#ifdef	identifier	#ifndef	identifier
	block1		block1
[#else		[#else
	block2]		block2]
#endif		#endif

Functional description

#ifdef

If the identifier has been defined by a #define directive before the #ifdef statement, block1 will be assembled. If it has not been defined and an #else directive has been coded, block2 will be assembled.

#ifndef

If the identifier has not been defined by a #define directive before the #ifndef statement, block1 will be assembled. If it has been defined and an #else directive has been coded, block2 will be assembled.

Coding rules

These directives can be used within macro definitions and wherever machine language instructions can be coded.

If an identifier is defined after #ifdef or #ifndef, it will be considered undefined.

Identifiers can be specified by the D option when the assembler is started, even if they are not defined with #define directives.

Conditional Assembly 191

Image 203

Panasonic MN1030 user manual 10.4.1 #ifdef, #ifndef, Syntax for #ifdef Syntax for #ifndef

Contents

MN1030 Series Cross Assembler User’s Manual Page Page Reference Techniques Manual Features Usage note How to readHeading Program example Related Manuals Chapter Writing Macro Control Statements Purpose of This Chapter Purpose of This Chapter Rules of Usage Usage Example Chapter Types of Source Statements Writing Assembler Control Statements Readinig List Files Error Correction Using Tag Jumps 306 Chapter Purpose of This Chapter 98/Me/2000/XP Operating EnvironmentHost machine Operating system Version of OS Solaris Or later Slib103 library manager File OrganizationAs103 assembler Ld103 linker Installation Start-up files SetupSetting command path Keywordparameter Start-up file format Option Keyword DescriptionMessage Notation Libdir En-OPTIONEd-OPTION Stdlib Excv103 options EX format file name General command formatFile Conversion Utility Options Rules of output file name Default specification Example of specifying options Program Development Flow Program Development Flow Assembler and compiler Program Development FlowMain development flow Source code debugger Program format Reference , Using Linker, for detailsProgramming with Assembler Required knowledge Optimization Programming style Debugging Conditional assemblyMacros Program Development Flow Programming with Assembler Introduction to Operation Introduction to Operation Files Used Files Used by Assembler and Linker Introduction to Operation Create source files Basic Operation of Assembler and Linker Assemble Contents of program2.asm are as follows Generate final list files Link Contents of the final list file program1.lst are as follows Contents of the final list file program2.lst are as follows Assembling and Linking Multiple Sections Assemble and generate list files Contents of program4.asm are as follows DATA, PUBLIC,4 Contents of the list file program4.lst are as follows Parameter file during linking Following command was input to link CAE0 Data Contents of the final list file program4.lst are as follows Program Location Program locations after linking #ifdef Conditional Assembly and LinkingCreate source file Assemble and link the program that you have created Assemble and link Select false condition, assemble, and link Specify assembly conditions in the command As103 -D Debug program5.asm Introduction to Operation Conditional Assembly and Linking Chapter Optimization Has been optimized Rules of Usage Optimization is off by default Instruction Type Branch Range Usage ExampleOptimization Instructions Optimized Conditional Branch Instructions Type Branch Range Dn, abs Movhu abs, Dn Movhu Dn, abs Abs, AnAbs, Dn An, abs Btst imm, Dn Logical Instructions Subject To OptimizationInstruction Optimization processing BNE*+5 Optimization processing of conditional branch instructionsAssembler processing Linker processing Optimization of function calls Label JMP label Call label Calls label JSR label Optimization of branchesBRA label Label JMP label Optimization Optimization Opt Text CA7F Example subroutine call converted to a relative branch Using Assembler Using Asssembler Specifying options General format of commandsStarting Assembler Summary of options Command Options Operation Example Output File OptionsFunctional description Rules of Use No list file will be output Output a list fileAs103 -l sample.asm As103 -l -Li sampl.asm Do not output files included by include to the list fileAs103 -Li -l sample.asm As103 -l -Lm sampl.asm As103 -Lm -l sample.asm As103 -l -Lc sampl.asm As103 -Lc -l sample.asm As103 -a sample.map -l sample.asm Do not output a symbol table to the list fileSymbol table will be output As103 -Ls -l sample.asm As103 -j sample.asm Error Message Options This option is not available on DOS/V or PC/AT machines As103 -Je sample.asm As103 -Js sample.asm As103 -Jj sample.asm As103 -e sample.asm Output error and warning messages in English As103 -Wall sample.asm Default is to display all warning messagesAs103 -W 2001 sample.asm Wall Do not output any warning messages As103 -I/user/defs main.asm Preprocessor OptionsPathname Specify the trace directory of the include file As103 -D Version sample.asm As103 -g sample.asm Program Generation OptionsOutput debug information to the relocatable object file Executable format file .EX As103 -Od sample.asm Turn on optimizationAs103 -O sample.asm Turn off optimization Display the assemblers version number on the console Other OptionsAs103 -h On the screen As103 -g -o test.rf -I /user/lib sample.asm Program assemblyOperation Examples As103 -g -D Version -o test.rf /user/source/main.asm As103 -l -a main.map sub.asm As103 -l -Lc -Lm -a main.map -D Mode prog1.asm Chapter Using Linker Link Model of Section Address Format Main.ex -gm Starting LinkerLd103 options relocatableobjectfilename Libraryfilename Jmg Executable file Path specifications on the relocatable object files@CODE=80000000 or -T @CODE=80000000 M103.map, respectively Linker options Option Type Symbol Description Command Options Ld103 -o /usr/tmp/test.ex main.rf sub.rf Ld103 -m -TTEXT=80000000 -TCONST=80005000 prog1.rf prog2.rf Output a map fileLd103 -m main.rf sub.rf Ld103 -j sample.rf Ld103 -Je sample.rf Ld103 -Js sample.rf Ld103 -Jj sample.rf Ld103 -e sample.rf Ld103 -Wall main.rf sub.rf Function descriptionLd103 -W3001 progr1.rf prog2.rf Ld103 -g main.rf sub.rf Output debug information to the executable format file Section =addresses Specify starting address for a section Section layout rules Ld103 -T @CODE=80000000 -T@DATA=0 main.rf sub.rf Lowest section is referred to the section nameLd103 main.rf sub.rf Parameter file Letter Ld103 -r prog1.rf Output an executable format file even if errors are detected Ld103 -Ed main.rf sub.rf Ld103 -En main.rf sub.rfEn option cannot be used in conjunction with the g option Output the Data section to the executable file Message will be appeared Library File OptionsLibraryfilename Specify a library file Ld103 -l /usr/lib/sample.lib main.rf sub.rf Library files specified by the l option will be read Pathname Specify a directory containing library files Ld103 @pfile Operational example@filename Specify a parameter file Ld103 Ld103 -h Instruction RAM Support Number field to Structure of Iram Support Executable FileStructural Elements of an Iram Support Executable Layout Image for Instruction RAM and External Memory These names for ordinary symbols Using Linker Same result Iram Support Options Starting address in instruction RAM is given in hexadecimal Address is in hexadecimal PUT symbol=address Specify address for extra symbolOverlaytable Irammanage Assignment to the same address in instruction RAM Operation ExamplesAssigning to different addresses in instruction RAM Overlaps with actual code Conflicts and suppresses executable file output Using Linker Instruction RAM Support Types of Source Statements Type of Source Statements Program Format Movw Data, A0 0x12 D0, A0 Endm #includeEqu 0x32 Dataset Macro Directive statements Machine language instruction statements Mov 0x11, D0 Assembler Control Statements#else Mov 0x22, D0 Adrset Data1, reg1 Data2, reg2 Macro Control StatementsAdrset Macro data, reg Mov Reg, A0 Data, D0 D0, A0 Endm Program Start main Conditional assembly definitionComment Statements Blank Statements Type of Source Statements Blank Statements Writing Source Statements Writing Source Statements Letters Permitted CharactersDigits 2 3 4 5 6 7 8 Re hexadecimal digits that correspond to decimal NumbersRadices and allowed digits C D E F or Coding rules Extended C language formatIntel format ’789’ Matsushita format’101’ ’567’ Character constants Character Constants Specified String constantsSpecifies the string Abcdefg as Ascii code +-&%$#@ Specifies the string +-&%$#@!,. as Ascii code Example Address Constants Location Counter Sec ExpressionsAssembler or linker Section CODE,PUBLIC,1 Operator Meaning OperatorsArithmetic operators Shift operators Formats Example Operand1 Operand2 Logical operatorsLogical operators perform calculation in bit units Equ 0b01101110 Expression EvaluationPrecedence Operator Description Mov 10+5+2, d0 Expression SyntaxMov 10+5, d0 Mov +10+5, d0 Attribute of Operand Attribute of Result Expression AttributesOperation result attributes For ~, +, unary operators For *, /, %, , , &, , operators For + addition operatorFor subtraction operator Iflt, ifn, ifnb, ifndef, ifneq, include, undef Reserved WordsD0, d1, d2, d3, a0, a1,a2, a3, PSW, mdr, sp Define, if Ifb, ifdef, ifeq, ifge, ifgt, iflePage Purpose of This Chapter Coding rules Instruction Statement Fields Label Longlabellonglabellonglabellonglab main Startcont Writing Label FieldCoding examples Start Mov Writing Operation FieldEqu Jsr Writing Operand FieldOne operand Operands are register and expression Set count value Writing Comment FieldMov 0x10, D0 Writing Machine Language Instruction Statements Below is a list of directives Writing Directive StatementsList of directives Document conventions Section linking rules Default settingsSection Syntax Main Jsr Operand coding rulesDirective coding rules Usage example Current location counter value will be inherited AlignLabel Operation Operand Align Expression 0x01 Below is an example use of the align directive00000000 Below is an example use of the end directive 3 endLabel Name end These directives take no operands Listoff, listonLabel operation operand Name listoff Name liston Listoff and liston directives themselves are output Operand Format NotationLabel Operation Operand Notation Clang will be selected Notation Below is an example use of the notation directive Org 0x100 End 6 orgSecadr Secfnc Org 0x20 Opt on Opt off 7 opt Below is an example use of the page directive Label Operation Operand Linesexpression ,columnsexpressionNumber of lines = Number of columns = Below is an example use of the radix directive RadixLabel Operation Operand Radix Expression Another radix 10 dc 11 ds When expression2 is omitted, expression3 cannot be specified 1122 Below is an example use of the ds directivePanaX Series MN1030 Cross Assembler Loc Object Line Source Ds0 34127856 Dw1 dw 0x1234 12 dwSection DATA, Public 3930 Dw0 dw 12345 00000000 Dd0 13 ddLabel Operation Operand Name Expression, expression 78563412 Dd0 0x12345678 Memory equ Motor equ Stop equ 0b00001000 Base equ 14 equLabel Operation Operand Name Equ Expression 8020 Mov Equ 0x20Equ 0b00001000 Equ 0x1000 Label Operation Operand Name Global Name, name Global Mov 0x11, D0 Rts End Below is an example use of the global directiveExternal declaration External reference Loc Object Line Source Tit 16 titLabel operation operand Titstring Below is an example use of the tit directive These directives take no operand Xlistoff, xlistonName Xlistoff Xliston Xlistoff and xliston directives themselves are not output Usage Examples, Optimization of function calls Directive Specification RulesFuncinfo Stack Global 0funcCall 0func Global 0func, func Func Movm D2, SP Add 0func Funcinfo Func, 8, D2 Ret Assign 0x02 00000002 8002 Mov AssignUsage examples Assign 0x01 00000000 8001 MovPage Writing Assembler Control Statements Common coding rules Symbols used in this chapter have the following meaningsContents of brackets may be omitted File Inclusion Path name is coded within filename 10.2.1 #include#include filename Main Mov Data, A0 0x34, D0 D0, A0 End Data equFile to be assembled consists of the following statements #include Inc.h Identifier Definement Main Mov Data, D0 Load End #define Replacementstring comment10.3.1 #define #define Data Load Mov Data, D0 #define Data1 0x11 Data2 0x22 10.3.2 #undef#undef identifier Source file that uses #undef is shown below #if Conditional AssemblyContents of brackets from #else on can be omitted These directives can be used only within macro definitions Table below lists the conditional assembly directives #ifndef 10.4.1 #ifdef, #ifndefSyntax for #ifdef Syntax for #ifndef #ifdef Identifier #ifndef Block1 #else Block2 #endif 10X Mov 0x03, D1 #else #else Mov 0x01, D0 0x02, D0 #endif #ifndef#else Mov 0x03, D1 0x04, D1 #endif 8001 Mov 0x01, D0 #else 0x02, D0 #endif #ifndef #if 10.4.2 #if, #ifnSyntax for #if Syntax for #ifn #ifn 8002 Mov 0x02, D0 #endif #ifn #else Mov 0x01, D0 0x02, D0 #endif #ifn#else Mov 0x03, D0 0x04, D0 #endif Mov 0x01, D0 #else #ifneq 10.4.3 #ifeq, #ifneq#ifeq Compare Abc, abc Abc, acb 8002 11+ Mov 0x02, D0 #endif M10 Compare Abc, abc 10+ #ifeq #ifle 10.4.4 #iflt, #ifle#iflt 8002 12+ Mov 0x02, D0 #endif M12 Dsize12+ #iflt 12X Mov 0x01, D0 12+ #else #else Mov 0x01, D0 0x02, D0 #endif #ifge 10.4.5 #ifgt, #ifge#ifgt #ifge 8002 Mov 0x02, D0 #endif #ifge #ifnb 10.4.6 #ifb, #ifnb#ifb Debugon M17 Debug M14 Debug14+ #ifb Debugon 14X Jsr Check Proc #else 00000000 +14+ Jsr Proc 00000008 00F8FE04 #endif #undef Writing Macro Control Statements #include directive Macro definitions Macrobody Macro Definitions macro, endmMacroname Dummyparameter , dummyparameter An example macro definition is shown below Up to10 dummy parameters can be specified Macro Calls and ExpansionMacroname Parameter , parameter Var1 Equ 0x10 Var2 Var1+2 Addadr Macro Adr Adr, A0 Endm Operator Description Macro Operators Text Section CODE,PUBLIC,1 Up to 30 symbols can be specified Local Symbol Declaration localMacroname macro parameter Local symbol , symbol Symbol An example using the local directive is shown below #endif Exitm Endm Forced Termination of Macro Expansion exitmParameter Test Purge macroname , macroname Purging Macro Definitions purge Reptexpression block Rept Assembled list file is shown below Block 11.9 irpIrp Dummyparameter, parameter , parameter Irp Following example uses the irpc directive IrpcIrpc Dummyparameter, string DATA, Public Writing Macro Control Statements Irpc List of Machine Language Instructions List of Machine Language Instructions Register indirect addressing Addressing Modes Register relative indirect addressing Absolute addressing Index addressing List of Machine Language Instructions Move source to destination 12.3.1 Data Move Instructions Mnemonic Description of operation Movhu Index Absolute Extend Sign Subtract with Borrow Arithmetic InstructionsADD with Carry Compare source with destination EXCLUSIVE-OR source with destination Logical InstructionsSource with destination Or source with destination Mnemonic Description of operation LSR Dm, Dn Mnemonic Description of operation ASR Dm, DnASR imm8, Dn ASR Dn Bit operations Bit Manipulation Instructions Bclr imm8,abs32 Call Subroutine Branching Instructions JMP label Unconditional BranchMnemonic Description of operation JMP An Mnemonic Meaning Description of operation Conditional Branch If ZF = 1 or NF != VF, execute next instruction Conditional Branch for LoopZF=1 If ZF = 0, execute next instruction ZF=0 If ZF = 1, execute next instruction UDFnn imm, Dn User-Defined InstructionsUser Defined Function UDFnn Dm, Dn Do nothing Other Instructions Error Messages Error Messages Assembler Errors Illegal operand value Operand errorDefine symbol multiple defined Define symbol not defined Line of the source file exceed 65535 lines Not guaranteed operand by the instruction allocationSymbol name too long Error Messages Illegal operand expression Debug operand errorMacro symbol is used recursively Illegal section name No optimizing information Error in configure fileToo many arguments Can’t find Funcinfo directive Fatal Error Messages Linker Errors Address overlay with Iram manager Extra symbolname address aligned. addressFilename Section not found. This file ignored Filename Illegal sectionname attribute or align value Filename Symbolname not defined with FUNCINFO. line lineno Bad option switch.stringMultiply defined symbol Undefined symbol 3313 Extra symbolname used as normal symbol Filename Cannot read file Filename Invalid symbol detail information type.typeNo memory space Fileneme Cannot open file Filename Illegal optimize information.line lineno Filename Referring to symbolname defined in a programID=idInternal Error.string Filename Illegal relocation information.line lineno Error Messages Linker Errors Readinig List Files Reading List Files Reading List Files Machine language code supplemental information Output Format of Machine Language CodeLocation Loc Machine language code Object Supplemental information Version Source statement Source Symbols value is shown as eight hexadecimal digits Symbol TableSymbol Value Symbol Type Symbol Name Using Library Manager Using Library Manager Starting Library Manager Slib103 test.lib -f -j test1.rf test2.rf test3.rf Slib103 test.lib -f -Je test1.rf test2.rf test3.rf Slib103 test.lib -f -Js test1.rf test2.rf test3.rf Slig103 test.lib -f -Jj test1.rf test2.rf test3.rf Rules os use Slib103 test.lib -f -e test1.rf test2.rf test3.rf Slib103 test.lib -Wall -c test1.rf test2.rf test3.rf Slib103 test.lib -W4001 -o test1.rf test2.rf test3.rf Name Create a new library fileSlib103 test.lib -c test1.rf Slib103 test.lib -c test1.rf test2.rf test3.rf test4.rf Files with the same name Force creation of a library fileSlib103 test.lib -f test1.rf Slib103 test.lib -f test1.rf test2.rf test3.rf test4.rf Path name will be added in the library file Functional OptionsSlib103 test.lib -a test.1.rf Slib103 test.lib -a test1.rf test2.rf test3.rf Slib103 test.lib -d test1.rf test2.rf test3.rf Slib103 test.lib -d test1.rf Slib103 test.lib -p test1.rf slib103 test.lib -p Slib103 test.lib -p File Slib103 test.lib -r test1.rfSlib103 Test.lib -r test1.rf test2.rf test3.rf Slib103 test.lib -t test1.rf slib103 test.lib -t Slib103 test.lib -t test1.rf Existing in the current directory Slib103 test.lib -x test1.rfSlib103 test.lib -x test1.rf slib103 test.lib Assume that the file pfile contains the following line There is no default specificationSlib103 @pfile Slib103 Default is not to display the version numberSlib103 -h Display the library manager’s version number on the console Cause Solutions Error MessagesErrornumber Displayedmessage 4003 Filename not found. In addition to library 4002 This file has no public symbol information.filename4001 Filename not found 4302 Premature EOF. filename 4310 This file has redefined public symbol. filename4312 Symbol name length over. max 66. symbol 4301 Multiply specified object file name.filename 4315 Not warning message number 4313 Parameter-file already specified. filename4314 Cannot read parameter-file. filename 4503 Multiply specified library file name. filename 4504 Memory allocation error4501 Illegal option. string 4502 Library file name not foundPage Purpose of This Chapter Personal Computer Versions PC/ATWindows98/2000/Me/XP DOS/VWindows98/2000/Me/XP Operating Environment SLIB103.EXE library manager FilesAS103.EXE Assembler LD103.EXE linker Installation SET PATH=A\usr\local\bin Environment Settings New setting will then automatically take effect Differences From Workstation Versions Command line differences Contents of the generated error file Error are as follows Error Correction Using Tag JumpsGenerate error file Tag jumps Fix errorsContents of the file Error will be displayed on the screen First error message matches this display on the screen MAIN.ASM7 Error 2306 Multiple define symbol Return to error file Appendix Numeric Restrictions List of Command Options Output file options List of Assembler Command OptionsAssembler command general format Program generation options Error message optionsPreprocessor options Display the assembler’s version number on the console Others Linker command general format List of Linker Command Options Instruction RAM options Library file options Display the linker’s version number on the console Ld103 @ pfileDisplay help information on the console Syntax Function & Notes Directives for symbolsList of Assembler Directives Directives for program control Directives for list control Directives for data area allocation Pana Matsushita format Clang Extended C language format defaultOther directives Intel Intel format This section provides a list of assembler control statements List of Assembler Control Statements Syntax Function & Notes Symbols Macroname 207 Libraryfilename 103 Pathname 104 Label Field 148Machine language code supplemental information Macro 207 Undefined 142 173 Number Wall 313 289 Xlistoff 176 Xliston Index MN1030 Series Cross Assembler User’s Manual Sales Offices