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Language Extensions 3.1 Preprocessor extensions The compiler supports several extensions to the preprocessor, including the #assert preprocessing extensions of System V release 4. 3.1.1 #assert The #assert preprocessing extensions of System V release 4 are permitted. These enable definition and testing of predicate names. Such names are in a namespace distinct from all other names, including macro names. Syntax #assert name #assert name[(token-sequence)] Where: name token-sequence is a predicate name is an optional sequence of tokens. If the token sequence is omitted, name is not given a value. If the token sequence is included, name is given the value token-sequence. Example A predicate name defined using #assert can be tested in a #if expression, for example: #if #name(token-sequence) This has the value 1 if a #assert of the name name with the token-sequence token-sequence has appeared, and 0 otherwise. A given predicate can be given more than one value at a given time. See also • #unassert on page 3-3. 3-2 Copyright © 2007-2010 ARM. All rights reserved. ARM DUI 0348C Non-Confidential, ID101213
Language Extensions 3.1.2 #include_next This preprocessor directive is a variant of the #include directive. It searches for the named file only in the directories on the search path that follow the directory where the current source file is found, that is, the one containing the #include_next directive. Note This preprocessor directive is a GNU compiler extension that is supported by the ARM compiler. 3.1.3 #unassert A predicate name can be deleted using a #unassert preprocessing directive. Syntax #unassert name #unassert name[(token-sequence)] Where: name token-sequence is a predicate name is an optional sequence of tokens. If the token sequence is omitted, all definitions of name are removed. If the token sequence is included, only the indicated definition is removed. All other definitions are left intact. See also • #assert on page 3-2. 3.1.4 #warning The preprocessing directive #warning is supported. Like the #error directive, this produces a user-defined warning at compilation time. However, it does not halt compilation. Restrictions The #warning directive is not available if the --strict option is specified. If used, it produces an error. ARM DUI 0348C Copyright © 2007-2010 ARM. All rights reserved. 3-3 ID101213 Non-Confidential,
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Contents RealView Compilation Tools
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Preface This preface introduces the
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Preface Appendix A Via File Syntax
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Preface Other publications The foll
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Chapter 1 Introduction This chapter
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Introduction 1.2 Source language mo
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Introduction 1.3 Language extension
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Introduction • Compiling a C sour
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Chapter 2 Compiler Command-line Opt
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Compiler Command-line Options 2.1.2
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Compiler Command-line Options Each
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Compiler Command-line Options Note
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Compiler Command-line Options • -
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Compiler Command-line Options Restr
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Compiler Command-line Options Defau
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Compiler Command-line Options Synta
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Compiler Command-line Options Compi
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Compiler Command-line Options Selec
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Compiler Command-line Options Note
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Compiler Command-line Options • R
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Compiler Command-line Options Defau
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Compiler Command-line Options Usage
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Compiler Command-line Options A num
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Compiler-specific Features See also
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Compiler-specific Features __weak v
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Compiler-specific Features When a c
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Compiler-specific Features Examples
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Compiler-specific Features Usage If
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Compiler-specific Features 4.3 Func
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Compiler-specific Features 4.3.2 __
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Compiler-specific Features 4.3.11 _
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Compiler-specific Features 4.4 Type
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Compiler-specific Features • Bit-
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Compiler-specific Features 4.5 Vari
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Compiler-specific Features In parti
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Compiler-specific Features 4.5.5 __
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Compiler-specific Features Default
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Compiler-specific Features • Chap
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Compiler-specific Features 4.7 Inst
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Compiler-specific Features opcode2
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Compiler-specific Features Example
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Compiler-specific Features Restrict
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Compiler-specific Features 4.7.44 A
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Compiler-specific Features 4.7.47 A
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Chapter 5 C and C++ Implementation
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C and C++ Implementation Details th
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C and C++ Implementation Details Se
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C and C++ Implementation Details Po
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C and C++ Implementation Details
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C and C++ Implementation Details 5.
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C and C++ Implementation Details No
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C and C++ Implementation Details na
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C and C++ Implementation Details 5.
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Appendix A Via File Syntax This app
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Via File Syntax A.2 Syntax Via file
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Appendix B Standard C Implementatio
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Standard C Implementation Definitio
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Appendix C Standard C++ Implementat
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Standard C++ Implementation Definit
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Standard C++ Implementation Definit
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Appendix D C and C++ Compiler Imple
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C and C++ Compiler Implementation L
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C and C++ Compiler Implementation L
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Appendix E Using NEON Support This
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Using NEON Support E.2 Vector data
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Using NEON Support • Vector long
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Using NEON Support uint64x1_t vqadd
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Using NEON Support Vector multiply
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Using NEON Support int64x1_t vqsub_
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Using NEON Support uint32x2_t vcle_
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Using NEON Support uint16x4_t vabd_
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Using NEON Support Long pairwise ad
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Using NEON Support int16x8_t vqshlq
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Using NEON Support uint8x8_t vrshr_
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Using NEON Support Vector signed->u
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Using NEON Support uint8x16_t vld1q
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Using NEON Support int16x4_t lane);
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Using NEON Support // VST1.8 {d0},
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Using NEON Support uint64x1x2_t vld
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Using NEON Support float32x2x4_t vl
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Using NEON Support lane); // VLD2.8
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Using NEON Support // VLD4.16 {d0[0
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Using NEON Support // VST3.32 {d0,
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Using NEON Support // VST3.32 {d0[0
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Using NEON Support uint8x8_t vset_l
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Using NEON Support float32x2_t vmov
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Using NEON Support uint32x2_t vcvt_
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Using NEON Support // VMLA.I16 d0,
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Using NEON Support Vector long mult
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Using NEON Support Vector widening
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Using NEON Support Bitwise and int8
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Using NEON Support E.3.31 Vector re
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