ARM Compiler 5.06 armasm用户指南

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本资源是ARM汇编语言的用户指南文档，专为ARM Compiler 5.06版本设计，由ARM Limited或其关联公司于2010年至2016年期间发布。这份用户手册详细介绍了如何使用ARM汇编器（armasm）进行程序开发，涵盖了从基础语法到高级特性的全方位指导。ARM汇编是一种低级编程语言，它直接操作硬件寄存器，适用于对性能和控制有高要求的应用场景，如嵌入式系统、实时操作系统等。 ARM Compiler 5.06的历史版本更新记录显示了该工具的持续改进和优化。从v4.1到v5.0，再到v5.06，每次迭代都可能引入了新的指令集优化、性能提升、编译器工具改进，以及对新硬件平台的支持。例如，v5.0系列的更新增加了对ARMv8-A架构的支持，这是ARM Cortex-A处理器系列的标准，包括A53和A72等核心。文档中的"DocumentHistory"部分列出了各个版本的发布日期和保密状态，非机密版本意味着这些内容可以公开获取，便于开发者查阅和学习。对于开发者而言，这份指南不仅提供了编译器的使用教程，还包含了错误处理、调试技巧、代码优化建议等内容，有助于他们更有效地利用ARM汇编语言进行高效且兼容性强的代码编写。此外，该文档还可能包含编译器的命令行选项、内存管理、数据类型、指令集特性介绍、循环控制结构、异常处理等关键知识点。学习者通过阅读这份用户指南，可以深入理解如何编写出性能优越、可移植的ARM汇编程序，以满足不断变化的嵌入式系统需求。 DUI0473M_armasm_user_guide.pdf是一份重要的参考资料，对于想要掌握ARM汇编语言或者升级到ARM Compiler 5.06版本的程序员来说，它是一把打开嵌入式世界大门的钥匙，帮助他们在实践中提高技能并优化项目性能。

Chapter 13 VFP Instructions

13.1 Summary of VFP instructions .............................................................................. 13-714

13.2 VABS (floating-point) ............................................. ............................................. 13-716

13.3 VADD (floating-point) ............................................. ............................................. 13-717

13.4 VCMP, VCMPE .................................................................................................... 13-718

13.5 VCVT (between single-precision and double-precision) ...................................... 13-719

13.6 VCVT (between floating-point and integer) ............................ ............................ 13-720

13.7 VCVT (between floating-point and fixed-point) .................................................... 13-721

13.8 VCVTB, VCVTT (half-precision extension) .......................................................... 13-722

13.9 VDIV .................................................................................................................... 13-723

13.10 VFMA, VFMS, VFNMA, VFNMS (floating-point) ........................ ........................ 13-724

13.11 VLDM (floating-point) ............................................. ............................................. 13-725

13.12 VLDR (floating-point) ............................................. ............................................. 13-726

13.13 VLDR (post-increment and pre-decrement, floating-point) .................................. 13-727

13.14 VLDR pseudo-instruction .......................................... .......................................... 13-728

13.15 VMLA (floating-point) ............................................. ............................................. 13-729

13.16 VMLS (floating-point) ............................................. ............................................. 13-730

13.17 VMOV (floating-point) .......................................................................................... 13-731

13.18 VMOV (between one ARM register and single precision VFP) ............. ............. 13-732

13.19 VMOV (between two ARM registers and one or two extension registers) ..... ..... 13-733

13.20 VMOV (between an ARM register and half a double precision VFP register) .. .. 13-734

13.21 VMRS .................................................................................................................. 13-735

13.22 VMSR .................................................................................................................. 13-736

13.23 VMUL (floating-point) ............................................. ............................................. 13-737

13.24 VNEG (floating-point) .......................................................................................... 13-738

13.25 VNMLA (floating-point) ........................................................................................ 13-739

13.26 VNMLS (floating-point) ........................................................................................ 13-740

13.27 VNMUL (floating-point) ........................................................................................ 13-741

13.28 VPOP (floating-point) ............................................. ............................................. 13-742

13.29 VPUSH (floating-point) ........................................................................................ 13-743

13.30 VSQRT ................................................................................................................ 13-744

13.31 VSTM (floating-point) ............................................. ............................................. 13-745

13.32 VSTR (floating-point) ............................................. ............................................. 13-746

13.33 VSTR (post-increment and pre-decrement, floating-point) .................................. 13-747

13.34 VSUB (floating-point) ............................................. ............................................. 13-748

Chapter 14 Wireless MMX Technology Instructions

14.1 About Wireless MMX Technology instructions .......................... .......................... 14-750

14.2 WRN and WCN directives to support Wireless MMX Technology ........... ........... 14-751

14.3 Frame directives and Wireless MMX Technology ................................................ 14-752

14.4 Wireless MMX load and store instructions ............................. ............................. 14-753

14.5 Wireless MMX Technology and XScale instructions ............................................ 14-755

14.6 Wireless MMX instructions .................................................................................. 14-756

14.7 Wireless MMX pseudo-instructions .................................. .................................. 14-758

Chapter 15 Directives Reference

15.1 Alphabetical list of directives ....................................... ....................................... 15-761

15.2 About assembly control directives ................................... ................................... 15-762

15.3 About frame directives ............................................ ............................................ 15-763

15.4 ALIAS ......................................................... ......................................................... 15-764

reserved.

Non-Confidential

15.5 ALIGN .................................................................................................................. 15-765

15.6 AREA ......................................................... ......................................................... 15-767

15.7 ARM or CODE32 ................................................ ................................................ 15-770

15.8 ASSERT .............................................................................................................. 15-771

15.9 ATTR ......................................................... ......................................................... 15-772

15.10 CN ........................................................... ........................................................... 15-773

15.11 CODE16 .............................................................................................................. 15-774

15.12 COMMON ............................................................................................................ 15-775

15.13 CP ........................................................................................................................ 15-776

15.14 DATA .................................................................................................................... 15-777

15.15 DCB .......................................................... .......................................................... 15-778

15.16 DCD and DCDU .................................................................................................. 15-779

15.17 DCDO .................................................................................................................. 15-780

15.18 DCFD and DCFDU .............................................................................................. 15-781

15.19 DCFS and DCFSU .............................................................................................. 15-782

15.20 DCI ...................................................................................................................... 15-783

15.21 DCQ and DCQU .................................................................................................. 15-784

15.22 DCW and DCWU ................................................ ................................................ 15-785

15.23 END .......................................................... .......................................................... 15-786

15.24 ENDFUNC or ENDP ............................................................................................ 15-787

15.25 ENTRY ........................................................ ........................................................ 15-788

15.26 EQU .......................................................... .......................................................... 15-789

15.27 EXPORT or GLOBAL .......................................................................................... 15-790

15.28 EXPORTAS .................................................... .................................................... 15-792

15.29 FIELD .................................................................................................................. 15-793

15.30 FRAME ADDRESS .............................................................................................. 15-794

15.31 FRAME POP ................................................... ................................................... 15-795

15.32 FRAME PUSH .................................................. .................................................. 15-796

15.33 FRAME REGISTER .............................................. .............................................. 15-797

15.34 FRAME RESTORE .............................................................................................. 15-798

15.35 FRAME RETURN ADDRESS .............................................................................. 15-799

15.36 FRAME SAVE ...................................................................................................... 15-800

15.37 FRAME STATE REMEMBER .............................................................................. 15-801

15.38 FRAME STATE RESTORE .................................................................................. 15-802

15.39 FRAME UNWIND ON .......................................................................................... 15-803

15.40 FRAME UNWIND OFF ........................................................................................ 15-804

15.41 FUNCTION or PROC ............................................. ............................................. 15-805

15.42 GBLA, GBLL, and GBLS .......................................... .......................................... 15-806

15.43 GET or INCLUDE ................................................................................................ 15-807

15.44 IF, ELSE, ENDIF, and ELIF .................................................................................. 15-808

15.45 IMPORT and EXTERN ........................................................................................ 15-810

15.46 INCBIN ................................................................................................................ 15-812

15.47 INFO .................................................................................................................... 15-813

15.48 KEEP ......................................................... ......................................................... 15-814

15.49 LCLA, LCLL, and LCLS ........................................... ........................................... 15-815

15.50 LTORG ........................................................ ........................................................ 15-816

15.51 MACRO and MEND .............................................. .............................................. 15-817

15.52 MAP .......................................................... .......................................................... 15-820

15.53 MEXIT .................................................................................................................. 15-821

15.54 NOFP ......................................................... ......................................................... 15-822

reserved.

Non-Confidential

15.55 OPT .......................................................... .......................................................... 15-823

15.56 QN, DN, and SN .................................................................................................. 15-825

15.57 RELOC ................................................................................................................ 15-827

15.58 REQUIRE ............................................................................................................ 15-828

15.59 REQUIRE8 and PRESERVE8 ...................................... ...................................... 15-829

15.60 RLIST .................................................................................................................. 15-830

15.61 RN ........................................................... ........................................................... 15-831

15.62 ROUT .................................................................................................................. 15-832

15.63 SETA, SETL, and SETS ...................................................................................... 15-833

15.64 SPACE or FILL .................................................................................................... 15-834

15.65 THUMB ................................................................................................................ 15-835

15.66 THUMBX ...................................................... ...................................................... 15-836

15.67 TTL and SUBT .................................................. .................................................. 15-837

15.68 WHILE and WEND .............................................................................................. 15-838

Chapter 16 Via File Syntax

16.1 Overview of via files .............................................. .............................................. 16-840

16.2 Via file syntax rules .............................................................................................. 16-841

Appendix A Assembler Document Revisions

A.1 Revisions for armasm User Guide ............................... ............................... Appx-A-843

reserved.

Non-Confidential

List of Figures

ARM

Compiler armasm User Guide

Figure 2-1 Organization of general-purpose registers and Program Status Registers ........................... 2-43

Figure 8-1 NEON extension register bank ............................................................................................ 8-171

Figure 9-1 VFP extension register bank ............................................................................................... 9-194

Figure 9-2 VFPv2 register banks .......................................................................................................... 9-208

Figure 9-3 VFPv3 register banks .......................................................................................................... 9-208

Figure 11-1 ASR #3 ............................................................................................................................... 11-315

Figure 11-2 LSR #3 ............................................................................................................................... 11-316

Figure 11-3 LSL #3 ................................................................................................................................ 11-316

Figure 11-4 ROR #3 .............................................................................................................................. 11-316

Figure 11-5 RRX ................................................................................................................................... 11-317

Figure 12-1 De-interleaving an array of 3-element structures .............................................................. 12-579

Figure 12-2 Operation of doubleword VEXT for imm = 3 ...................................................................... 12-612

Figure 12-3 Example of operation of VPADAL (in this case for data type S16) ................................... 12-656

Figure 12-4 Example of operation of VPADD (in this case, for data type I16) ...................................... 12-657

Figure 12-5 Example of operation of doubleword VPADDL (in this case, for data type S16) ............... 12-658

Figure 12-6 Operation of quadword VSHL.I64 Qd, Qm, #1 .................................................................. 12-688

Figure 12-7 Operation of quadword VSLI.64 Qd, Qm, #1 ..................................................................... 12-693

Figure 12-8 Operation of doubleword VSRI.64 Dd, Dm, #2 .................................................................. 12-695

Figure 12-9 Operation of doubleword VTRN.8 ..................................................................................... 12-708

Figure 12-10 Operation of doubleword VTRN.32 ................................................................................... 12-708

reserved.

Non-Confidential

List of Tables

ARM

Compiler armasm User Guide

Table 2-1 ARM processor modes .......................................................................................................... 2-38

Table 2-2 Predeclared core registers .................................................................................................... 2-46

Table 2-3 Predeclared extension registers ............................................................................................ 2-47

Table 2-4 Predeclared XScale registers ................................................................................................ 2-48

Table 2-5 Predeclared Wireless MMX registers .................................................................................... 2-48

Table 2-6 Predeclared coprocessor registers ........................................................................................ 2-49

Table 2-7 Instruction groups .................................................................................................................. 2-55

Table 4-1 Stack-oriented suffixes and equivalent addressing mode suffixes ........................................ 4-82

Table 4-2 Suffixes for load and store multiple instructions .................................................................... 4-82

Table 4-3 Changes from earlier ARM assembly language .................................................................... 4-99

Table 4-4 Relaxation of requirements .................................................................................................... 4-99

Table 4-5 Differences between pre-UAL Thumb syntax and UAL syntax ........................................... 4-100

Table 5-1 Condition code suffixes and related flags ............................................................................ 5-106

Table 5-2 Condition codes ................................................................................................................... 5-107

Table 5-3 Conditional branches only .................................................................................................... 5-110

Table 5-4 All instructions conditional .................................................................................................... 5-111

Table 6-1 Built-in variables ................................................................................................................... 6-118

Table 6-2 Built-in Boolean constants ................................................................................................... 6-119

Table 6-3 Predefined macros ............................................................................................................... 6-119

Table 6-4 {TARGET_ARCH_ARM} in relation to {TARGET_ARCH_THUMB} .................................... 6-120

Table 6-5 Command-line options ......................................................................................................... 6-132

Table 6-6 armcc equivalent command-line options ............................................................................. 6-132

Table 7-1 Unary operators that return strings ...................................................................................... 7-156

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