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

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Call frame informationA full description about the calling convention may require extensive call frameinformation. In many cases, a more limited approach will suffice.When describing the call frame information, the following three components must bepresent:●●A names block describing the available resources to be trackedA common block corresponding to the calling convention● A data block describing the changes that are performed on the call frame. Thistypically includes information about when the stack pointer is changed, and whenpermanent registers are stored or restored on the stack.The following table lists all the resources defined in the names block used by thecompiler:ResourceCFAR4–R15R4L–R15LR4H–R15HSPSRPCExampleThe following is an example of an assembler routine that stores a permanent register aswell as the return register to the stack when compiling for the MSP430 architecture:#include "cfi.m43"DescriptionThe call frames of the stackNormal registersLower 16 bits, when compiling for the MSP430X architectureHigher 4 bits, when compiling for the MSP430X architectureThe stack pointerThe processor state registerThe program counterTable 25: Call frame information resources defined in a names blockXCFI_NAMES myNamesXCFI_COMMON myCommon, myNamesMODULE cfiexamplePUBLIC cfiexampleRSEGCFICFICODE:CODE:NOROOT(1)Block myBlock Using myCommonFunction 'cfiexample'// The common block does not declare the scratch// registers as undefined.CFI R12 Undefined98MSP430 IAR C/C++ CompilerReference Guide
Assembler language interfacecfiexample:PUSH R11CFI R11 Frame(CFA, -4)CFI CFA SP+4// Do something useless just to demonstrate that the call// stack window works properly. You can check this by// single-stepping in the Disassembly window and// double-clicking on the parent function in the// Call Stack window.MOV #0, R11POP R11CFI R11 SameValueCFI CFA SP+2// Do something else.MOV #0, R12RETCFI ENDBLOCK myBlockENDMODENDPart 1. Using the compiler99
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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
Page 74 and 75: Using a prebuilt libraryThe followi
Page 76 and 77: Using a prebuilt library● is one
Page 78 and 79: Choosing formatters for printf and
Page 80 and 81: Overriding library modulesNote: If
Page 82 and 83: System startup and terminationThe l
Page 84 and 85: System startup and termination●
Page 86 and 87: Standard streams for input and outp
Page 88 and 89: Configuration symbols for printf an
Page 90 and 91: LocaleNote: If you link your librar
Page 92 and 93: Environment interactiondescribes th
Page 94 and 95: StrtodStrtodThe function strtod doe
Page 96 and 97: C-SPY Debugger runtime interface* T
Page 98 and 99: Checking module consistencyObject f
Page 100 and 101: Checking module consistencyIf this
Page 102 and 103: Runtime environment● Position-ind
Page 104 and 105: Input and output_medium_writeThe _m
Page 106 and 107: Overriding default library modules
Page 108 and 109: Checking module consistency82MSP430
Page 110 and 111: Mixing C and assemblerAn intrinsic
Page 112 and 113: Calling assembler routines from CIn
Page 114 and 115: Calling assembler routines from C++
Page 116 and 117: Calling conventionCHOOSING A CALLIN
Page 118 and 119: Calling conventionPreserved registe
Page 120 and 121: Calling conventionStack parameters
Page 122 and 123: Calling conventionExample 2This exa
Page 126 and 127: Call frame information100MSP430 IAR
Page 128 and 129: Overview●●●Runtime type infor
Page 130 and 131: Feature descriptionsalso apply to o
Page 132 and 133: Feature descriptionsA new expressio
Page 134 and 135: 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
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Descriptions of options--diag_remar
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Descriptions of optionsTo set relat
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Descriptions of options--error_limi
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Descriptions of optionsFor informat
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Descriptions of optionsdocumentatio
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Descriptions of optionsNote: This o
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Descriptions of optionsThis option
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Descriptions of options--output, -o
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Descriptions of options--reduce_sta
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Descriptions of options--silentSynt
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Descriptions of options168MSP430 IA
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Basic data typesThe MSP430 IAR C/C+
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Basic data typesFLOATING-POINT TYPE
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Pointer typesDATA POINTERSThe follo
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Type qualifiersThe following diagra
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Data types in C++constant and non-c
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C language extensionsinstructions.
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C language extensionsIn the followi
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C language extensions{char a;unsign
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C language extensionsMINOR LANGUAGE
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C language extensionsint test(int x
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General syntax rules for extended k
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Summary of extended keywordsThe fol
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Descriptions of extended keywordsSe
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Descriptions of extended keywords__
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Descriptions of extended keywordsTh
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Descriptions of pragma directivesPr
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Descriptions of pragma directivesco
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Descriptions of pragma directivesdi
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Descriptions of pragma directivesin
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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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