MSP430 IAR C/C++ Compiler reference guide - Rice University

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Descriptions of optionsThis option is not available in the IAR Embedded Workbench IDE.--no_wrap_diagnosticsSyntaxDescription--no_wrap_diagnosticsBy default, long lines in diagnostic messages are broken into several lines to make themessage easier to read. Use this option to disable line wrapping of diagnostic messages.This option is not available in the IAR Embedded Workbench IDE.-OSyntaxParameters-O[n|l|m|h|hs|hz]nl (default)mhhshzNone* (Best debug support)Low*MediumHigh, balancedHigh, favoring speedHigh, favoring size*The most important difference between None and Low is that at None, all non-static variableswill live during their entire scope.DescriptionUse this option to set the optimization level to be used by the compiler when optimizingthe code. If no optimization option is specified, the optimization level Low is used bydefault. If only -O is used without any parameter, the optimization level High balancedis used.A low level of optimization makes it relatively easy to follow the program flow in thedebugger, and, conversely, a high level of optimization makes it relatively hard.See also Controlling compiler optimizations, page 120.Project>Options>C/C++ Compiler>Optimizations160MSP430 IAR C/C++ CompilerReference Guide
Compiler options-o, --outputSyntaxParametersDescription-o {filename|directory}--output {filename|directory}For information about specifying a filename or a directory, see Rules for specifying afilename or directory as parameters, page 140.By default, the object code output produced by the compiler is located in a file with thesame name as the source file, but with the extension r43. Use this option to explicitlyspecify a different output filename for the object code output.This option is not available in the IAR Embedded Workbench IDE.--omit_typesSyntaxDescription--omit_typesBy default, the compiler includes type information about variables and functions in theobject output. Use this option if you do not want the compiler to include this typeinformation in the output, which is useful when you build a library that should notcontain type information. The object file will then only contain type information that isa part of a symbol’s name. This means that the linker cannot check symbol referencesfor type correctness.To set this option, use Project>Options>C/C++ Compiler>Extra Options.--only_stdoutSyntaxDescription--only_stdoutUse this option to make the compiler use the standard output stream (stdout) also formessages that are normally directed to the error output stream (stderr).This option is not available in the IAR Embedded Workbench IDE.Part 2. Compiler reference161
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MSP430 IAR C/C++ CompilerReference
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Brief contentsTables ..............
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ContentsTables ....................
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Standard streams for input and outp
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Functions .........................
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-e ................................
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C language extensions .............
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__enable_interrupt ................
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Implementation-defined behavior ...
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32: Data pointers .................
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What this guide containsWhat this g
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PrefaceStyle[option]{option}a|b|cbo
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Part 1. Using the compilerThis part
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Supported MSP430 devicesIt is also
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Basic settings for project configur
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Basic settings for project configur
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Special support for embedded system
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Special support for embedded system
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Data models (MSP430X only)●means
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Memory types (MSP430X only)The MSP4
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Memory types (MSP430X only)Type def
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C++ and memory types (MSP430X only)
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Dynamic memory on the heapAnother p
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Primitives for interrupts, concurre
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Placing segments in memoryfrom the
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Placing segments in memorySee the I
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Data segmentsexample DATA16 and __d
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Data segmentsThe data segment used
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Data segmentsAdd the required heap
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C++ dynamic initializationINTERRUPT
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Verifying the linked result of code
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Introduction to the runtime environ
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Using a prebuilt libraryThe followi
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Using a prebuilt library● is one
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Choosing formatters for printf and
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Overriding library modulesNote: If
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System startup and terminationThe l
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System startup and termination●
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Standard streams for input and outp
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Configuration symbols for printf an
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LocaleNote: If you link your librar
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Environment interactiondescribes th
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StrtodStrtodThe function strtod doe
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C-SPY Debugger runtime interface* T
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Checking module consistencyObject f
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Checking module consistencyIf this
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Runtime environment● Position-ind
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Input and output_medium_writeThe _m
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Overriding default library modules
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Checking module consistency82MSP430
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Mixing C and assemblerAn intrinsic
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Calling assembler routines from CIn
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Calling assembler routines from C++
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Calling conventionCHOOSING A CALLIN
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Calling conventionPreserved registe
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Calling conventionStack parameters
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Calling conventionExample 2This exa
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Call frame informationA full descri
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Call frame information100MSP430 IAR
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Overview●●●Runtime type infor
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Feature descriptionsalso apply to o
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Feature descriptionsA new expressio
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Feature descriptionsTemplates and d
Page 136 and 137: Feature descriptionsExamplevector d
Page 138 and 139: C++ language extensions●Constants
Page 140 and 141: Selecting data types● Declaring a
Page 142 and 143: Controlling data and function place
Page 144 and 145: Controlling data and function place
Page 146 and 147: Controlling compiler optimizationsT
Page 148 and 149: Controlling compiler optimizationss
Page 150 and 151: Writing efficient code}*p2 = 0;*p1
Page 152 and 153: Writing efficient codeint test(); /
Page 154 and 155: Writing efficient codeWDTCNTCL = 0x
Page 156 and 157: Writing efficient code130MSP430 IAR
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Page 160 and 161: Include file search procedure●Via
Page 162 and 163: Diagnostics●●●Diagnostic mess
Page 164 and 165: DiagnosticsFatal errorA diagnostic
Page 166 and 167: Options syntaxFor options with a lo
Page 168 and 169: Compiler options summaryCompiler op
Page 170 and 171: Descriptions of optionsCommand line
Page 172 and 173: Descriptions of optionsDescriptionF
Page 174 and 175: Descriptions of options--diag_remar
Page 176 and 177: Descriptions of optionsTo set relat
Page 178 and 179: Descriptions of options--error_limi
Page 180 and 181: Descriptions of optionsFor informat
Page 182 and 183: Descriptions of optionsdocumentatio
Page 184 and 185: Descriptions of optionsNote: This o
Page 188 and 189: Descriptions of options--output, -o
Page 190 and 191: Descriptions of options--reduce_sta
Page 192 and 193: Descriptions of options--silentSynt
Page 194 and 195: Descriptions of options168MSP430 IA
Page 196 and 197: Basic data typesThe MSP430 IAR C/C+
Page 198 and 199: Basic data typesFLOATING-POINT TYPE
Page 200 and 201: Pointer typesDATA POINTERSThe follo
Page 202 and 203: Type qualifiersThe following diagra
Page 204 and 205: Data types in C++constant and non-c
Page 206 and 207: C language extensionsinstructions.
Page 208 and 209: C language extensionsIn the followi
Page 210 and 211: C language extensions{char a;unsign
Page 212 and 213: C language extensionsMINOR LANGUAGE
Page 214 and 215: C language extensionsint test(int x
Page 216 and 217: General syntax rules for extended k
Page 218 and 219: Summary of extended keywordsThe fol
Page 220 and 221: Descriptions of extended keywordsSe
Page 222 and 223: Descriptions of extended keywords__
Page 224 and 225: Descriptions of extended keywordsTh
Page 226 and 227: Descriptions of pragma directivesPr
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Page 230 and 231: Descriptions of pragma directivesdi
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Page 234 and 235: Descriptions of pragma directivesno
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Descriptions of pragma directivesna
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Descriptions of pragma directivesEx
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Descriptions of pragma directivesEx
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Descriptions of intrinsic functions
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Descriptions of predefined preproce
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Descriptions of miscellaneous prepr
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Descriptions of miscellaneous prepr
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IntroductionLIBRARY OBJECT FILESMos
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IAR DLIB LibraryHeader filestdbool.
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IAR DLIB LibraryThe following table
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IAR CLIB Librarystdio.hIn stdio.h,
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IAR CLIB Library240MSP430 IAR C/C++
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Descriptions of segmentsSegmentDATA
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Descriptions of segmentsDATA16_CDes
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Descriptions of segmentsDATA20_ACDe
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Descriptions of segmentsDATA20_ZDes
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Descriptions of segments250MSP430 I
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Descriptions of implementation-defi
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inary streams (CLIB) . . . . . . .
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CSTACK (segment)example . . . . . .
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--double (compiler option) . . . .
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eentrancy (DLIB) . . . . . . . . .
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ISO/ANSI Ccompiler extensions . . .
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memory segment. See segmentmemory t
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asic_template_matching, using . . .
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S--save_reg20 (compiler option). .
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strtod, in stdlib.h . . . . . . . .
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wchar.h (library header file) . . .
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__no_operation (intrinsic function)
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MSP430 IAR C/C++ Compiler reference guide - Rice University

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