RealView Compilation Tools Compiler Reference Guide - ARM ...

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Compiler-specific Features To make use of the TI C55x intrinsics in your own code, include the standard header file c55x.h. The intrinsics supplied in c55x.h are listed in Table 4-15. Table 4-15 TI C55x intrinsics supported in RVCT Intrinsics _abss _lshrs _rnd _smas _count _lsadd _norm _smpy _divs _lsmpy _round _sneg _labss _lsneg _roundn _sround _lmax _lsshl _sadd _sroundn _lmin _lssub _shl _sshl _lnorm _max _shrs _ssub _lshl _min _smac Example #include #include #include // include TI C55x intrinsics __asm int32_t asm_lsadd(int32_t a, int32_t b) { qadd r0, r0, r1 bx lr } int32_t foo(int32_t a, int32_t b) { int32_t c, d, e; c = asm_lsadd(a, b); // assembly language saturating add d = __qadd(a, b); // ARM intrinsic saturating add e = _lsadd(a, b); // TI C55x saturating add } return c == d == e; // returns 1 4-100 Copyright © 2007, 2010 ARM Limited. All rights reserved. ARM DUI 0348A Non-Confidential
Compiler-specific Features See also • the header file c55x.h for further information on the ARM implementation of the C55x intrinsics • Publications providing information about TI compiler intrinsics are available from Texas Instruments at http://www.ti.com. 4.7.49 Named register variables The compiler enables you to access registers of an ARM architecture-based processor using named register variables. Named register variables are supported: • at file scope • at local scope, but not on a function parameter. Syntax register type var-name __asm(reg); Where: type var-name reg is the type of the named register variable. Any type of the same size as the register being named can be used in the declaration of a named register variable. The type can be a structure, but note that bitfield layout is sensitive to endianness. is the name of the named register variable. is a character string denoting the name of a register on an ARM architecture-based processor. Registers available for use with named register variables on ARM architecture-based processors are shown in Table 4-16. Table 4-16 Named registers available on ARM architecture-based processors Register CPSR SPSR r0 to r12 Character string for __asm "cpsr" or "apsr" "spsr" "r0" to "r12" ARM DUI 0348A Copyright © 2007, 2010 ARM Limited. All rights reserved. 4-101 Non-Confidential
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® RealView Compilation Tools Versi
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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 • ARM datasheet or techni
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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 Defau
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Compiler Command-line Options Note
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Compiler Command-line Options Table
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Compiler Command-line Options int m
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Compiler Command-line Options See a
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Compiler Command-line Options • -
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Compiler Command-line Options • T
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Compiler Command-line Options Where
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Compiler Command-line Options Mode
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Compiler Command-line Options • #
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Compiler Command-line Options Synta
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Compiler Command-line Options When
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Compiler Command-line Options A num
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Compiler Command-line Options Restr
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Compiler Command-line Options • #
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Compiler Command-line Options Synta
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Compiler Command-line Options --no_
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Compiler Command-line Options --apc
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Compiler Command-line Options Selec
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Chapter 3 Language Extensions This
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Language Extensions 3.1.2 #include_
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Language Extensions 3.2 C99 languag
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Language Extensions 3.3 C99 languag
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Language Extensions Example void co
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Language Extensions static int y =
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Language Extensions 3.4.4 Dollar si
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Language Extensions 3.5 Standard C+
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Language Extensions Example 3-2 Lin
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Language Extensions 3.6 Standard C
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Language Extensions 3.6.4 Assembler
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Language Extensions 3.6.12 Structur
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Language Extensions 3.7 GNU languag
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Language Extensions 3.7.5 Character
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Language Extensions 3.7.10 Inline T
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Language Extensions Example int bar
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Chapter 4 Compiler-specific Feature
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Compiler-specific Features Usage __
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Compiler-specific Features Example
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Compiler-specific Features 4.1.6 __
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Compiler-specific Features 4.1.11 _
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Compiler-specific Features short x;
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Compiler-specific Features Where: s
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Compiler-specific Features typedef
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Compiler-specific Features • 0-25
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Compiler-specific Features Usage Fu
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Compiler-specific Features 4.1.20 _
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Compiler-specific Features }; __dec
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Compiler-specific Features 4.3 Func
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Compiler-specific Features The comp
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Compiler-specific Features Note Thi
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Compiler-specific Features In the f
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Compiler-specific Features 4.4 Type
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Compiler-specific Features void cal
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Compiler-specific Features replaced
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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 satur
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Using NEON Support Vector add high
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Using NEON Support Vector saturatin
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Using NEON Support uint64x1_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 int64x1_t vld1_l
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Using NEON Support // VST1.16 {d0[0
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Using NEON Support // VLD3.32 {d0,
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Using NEON Support // VLD3.16 {d0[]
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Using NEON Support // VLD3.32 {d0[0
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Using NEON Support void vst2_u64(__
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Using NEON Support void vst2q_lane_
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Using NEON Support float32_t vget_l
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Using NEON Support uint8x16_t vdupq
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Using NEON Support uint16x4_t vget_
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Using NEON Support E.3.25 Operation
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Using NEON Support int16x8_t vmulq_
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Using NEON Support Vector widening
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Using NEON Support Absolute: Vd[i]
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Using NEON Support uint8x8_t vmvn_u
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Using NEON Support int16x8_t vornq_
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Using NEON Support uint32x4x2_t vuz
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