arm-linux-as 语法

Table of Contents

1. Overview

1.1 Structure of this Manual
1.2 The GNU Assembler
1.3 Object File Formats
1.4 Command Line
1.5 Input Files
1.6 Output (Object) File
1.7 Error and Warning Messages

2. Command-Line Options

2.1 Enable Listings:`-a[cdhlns]'
2.2`-D'
2.3 Work Faster:`-f'
2.4 .include search path:`-I' path
2.5 Difference Tables:`-K'
2.6 Include Local Labels:`-L'
2.7 Configuring listing output:`--listing'
2.8 Assemble in MRI Compatibility Mode:`-M'
2.9 Dependency tracking:`--MD'
2.10 Name the Object File:`-o'
2.11 Join Data and Text Sections:`-R'
2.12 Display Assembly Statistics:`--statistics'
2.13 Compatible output:`--traditional-format'
2.14 Announce Version:`-v'
2.15 Control Warnings:`-W',`--warn',`--no-warn',`--fatal-warnings'
2.16 Generate Object File in Spite of Errors:`-Z'

3. Syntax

•  
  •  3.6.1.1 Strings
    3.6.1.2 Characters3.6.2.1 Integers
    3.6.2.2 Bignums
    3.6.2.3 Flonums
  3.6.1 Character Constants
  3.6.2 Number Constants

3.1 Preprocessing
3.2 Whitespace
3.3 Comments
3.4 Symbols
3.5 Statements
3.6 Constants

4. Sections and Relocation

4.1 Background
4.2 Linker Sections
4.3 Assembler Internal Sections
4.4 Sub-Sections
4.5 bss Section

5. Symbols

•  
  •  5.5.3.1 Descriptor
    5.5.3.2 Other5.5.4.1 Primary Attributes
    5.5.4.2 Auxiliary Attributes
  5.5.1 Value
  5.5.2 Type
  5.5.3 Symbol Attributes: a.out
  5.5.4 Symbol Attributes for COFF
  5.5.5 Symbol Attributes for SOM

5.1 Labels
5.2 Giving Symbols Other Values
5.3 Symbol Names
5.4 The Special Dot Symbol
5.5 Symbol Attributes

6. Expressions

•  6.2.1 Arguments
  6.2.2 Operators
  6.2.3 Prefix Operator
  6.2.4 Infix Operators

6.1 Empty Expressions
6.2 Integer Expressions

7. Assembler Directives

7.1 .abort
7.2 .ABORT
7.3 .align abs-expr, abs-expr, abs-expr
7.4 .ascii "string"...
7.5 .asciz "string"...
7.6 .balign[wl] abs-expr, abs-expr, abs-expr
7.7 .byte expressions
7.8 .comm symbol , length
7.9 .data subsection
7.10 .def name
7.11 .desc symbol, abs-expression
7.12 .dim
7.13 .double flonums
7.14 .eject
7.15 .else
7.16 .elseif
7.17 .end
7.18 .endef
7.19 .endfunc
7.20 .endif
7.21 .equ symbol, expression
7.22 .equiv symbol, expression
7.23 .err
7.24 .exitm
7.25 .extern
7.26 .fail expression
7.27 .file string
7.28 .fill repeat , size , value
7.29 .float flonums
7.30 .func name[,label]
7.31 .global symbol, .globl symbol
7.32 .hidden names
7.33 .hword expressions
7.34 .ident
7.35 .if absolute expression
7.36 .incbin "file"[,skip[,count]]
7.37 .include "file"
7.38 .int expressions
7.39 .internal names
7.40 .irp symbol,values...
7.41 .irpc symbol,values...
7.42 .lcomm symbol , length
7.43 .lflags
7.44 .line line-number
7.45 .linkonce [type]
7.46 .ln line-number
7.47 .mri val
7.48 .list
7.49 .long expressions
7.50 .macro
7.51 .nolist
7.52 .octa bignums
7.53 .org new-lc , fill
7.54 .p2align[wl] abs-expr, abs-expr, abs-expr
7.55 .previous
7.56 .popsection
7.57 .print string
7.58 .protected names
7.59 .psize lines , columns
7.60 .purgem name
7.61 .pushsection name , subsection
7.62 .quad bignums
7.63 .rept count
7.64 .sbttl "subheading"
7.65 .scl class
7.66 .section name (COFF version)
7.67 .section name (ELF version)
7.68 .set symbol, expression
7.69 .short expressions
7.70 .single flonums
7.71 .size (COFF version)
7.72 .size name , expression (ELF version)
7.73 .sleb128 expressions
7.74 .skip size , fill
7.75 .space size , fill
7.76 .stabd, .stabn, .stabs
7.77 .string "str"
7.78 .struct expression
7.79 .subsection name
7.80 .symver
7.81 .tag structname
7.82 .text subsection
7.83 .title "heading"
7.84 .type int (COFF version)
7.85 .type name , type description (ELF version)
7.86 .uleb128 expressions
7.87 .val addr
7.88 .version "string"
7.89 .vtable_entry table, offset
7.90 .vtable_inherit child, parent
7.91 .weak names
7.92 .word expressions
7.93 Deprecated Directives

8. Machine Dependent Features

•  
  •  8.1.2.1 Macros
    8.1.2.2 Special Characters
    8.1.2.3 Register Names
  8.1.1 Options
  8.1.2 Syntax
  8.1.3 Floating Point
  8.1.4 AMD 29K Machine Directives
  8.1.5 Opcodes
  •  8.2.3.1 Special Characters
    8.2.3.2 Register Names
    8.2.3.3 Relocations
  8.2.1 Notes
  8.2.2 Options
  8.2.3 Syntax
  8.2.4 Floating Point
  8.2.5 Alpha Assembler Directives
  8.2.6 Opcodes
  •  8.3.2.1 Special Characters
    8.3.2.2 Register Names
  8.3.1 Options
  8.3.2 Syntax
  8.3.3 Floating Point
  8.3.4 ARC Machine Directives
  8.3.5 Opcodes
  •  8.4.2.1 Special Characters
    8.4.2.2 Register Names
  8.4.1 Options
  8.4.2 Syntax
  8.4.3 Floating Point
  8.4.4 ARM Machine Directives
  8.4.5 Opcodes
  •  8.5.3.1 Special Characters
    8.5.3.2 Symbols in position-independent code
    8.5.3.3 Register names
    8.5.3.4 Assembler Directives
  8.5.1 Command-line Options
  8.5.2 Instruction expansion
  8.5.3 Syntax
  •  8.6.2.1 Size Modifiers
    8.6.2.2 Sub-Instructions
    8.6.2.3 Special Characters
    8.6.2.4 Register Names
    8.6.2.5 Addressing Modes
    8.6.2.6 @WORD Modifier
  8.6.1 D10V Options
  8.6.2 Syntax
  8.6.3 Floating Point
  8.6.4 Opcodes
  •  8.7.2.1 Size Modifiers
    8.7.2.2 Sub-Instructions
    8.7.2.3 Special Characters
    8.7.2.4 Guarded Execution
    8.7.2.5 Register Names
    8.7.2.6 Addressing Modes
  8.7.1 D30V Options
  8.7.2 Syntax
  8.7.3 Floating Point
  8.7.4 Opcodes
  •  8.8.2.1 Special Characters
    8.8.2.2 Register Names
    8.8.2.3 Addressing Modes
  8.8.1 Options
  8.8.2 Syntax
  8.8.3 Floating Point
  8.8.4 H8/300 Machine Directives
  8.8.5 Opcodes
  •  8.9.2.1 Special Characters
    8.9.2.2 Register Names
    8.9.2.3 Addressing Modes
  8.9.1 Options
  8.9.2 Syntax
  8.9.3 Floating Point
  8.9.4 H8/500 Machine Directives
  8.9.5 Opcodes8.10.1 Notes
  8.10.2 Options
  8.10.3 Syntax
  8.10.4 Floating Point
  8.10.5 HPPA Assembler Directives
  8.10.6 Opcodes8.11.1 Notes
  8.11.2 Options
  8.11.3 Syntax
  8.11.4 Floating Point
  8.11.5 ESA/390 Assembler Directives
  8.11.6 Opcodes8.12.1 Options
  8.12.2 AT&T Syntax versus Intel Syntax
  8.12.3 Instruction Naming
  8.12.4 Register Naming
  8.12.5 Instruction Prefixes
  8.12.6 Memory References
  8.12.7 Handling of Jump Instructions
  8.12.8 Floating Point
  8.12.9 Intel's MMX and AMD's 3DNow! SIMD Operations
  8.12.10 Writing 16-bit Code
  8.12.11 AT&T Syntax bugs
  8.12.12 Specifying CPU Architecture
  8.12.13 Notes
  •  8.13.2.1 SVR4 compatibility options
    8.13.2.2 Other options8.13.4.1 Other instruction support (pseudo-instructions)
  8.13.1 i860 Notes
  8.13.2 i860 Command-line Options
  8.13.3 i860 Machine Directives
  8.13.4 i860 Opcodes
  •  8.14.4.1 callj
    8.14.4.2 Compare-and-Branch
  8.14.1 i960 Command-line Options
  8.14.2 Floating Point
  8.14.3 i960 Machine Directives
  8.14.4 i960 Opcodes8.15.1 M32R Options
  8.15.2 M32R Warnings
  •  8.16.6.1 Branch Improvement
    8.16.6.2 Special Characters
  8.16.1 M680x0 Options
  8.16.2 Syntax
  8.16.3 Motorola Syntax
  8.16.4 Floating Point
  8.16.5 680x0 Machine Directives
  8.16.6 Opcodes
  •  8.17.4.1 Branch Improvement
  8.17.1 M68HC11 and M68HC12 Options
  8.17.2 Syntax
  8.17.3 Floating Point
  8.17.4 Opcodes8.18.1 M88K Machine Directives8.19.1 Assembler options
  8.19.2 MIPS ECOFF object code
  8.19.3 Directives for debugging information
  8.19.4 Directives to override the ISA level
  8.19.5 Directives for extending MIPS 16 bit instructions
  8.19.6 Directive to mark data as an instruction
  8.19.7 Directives to save and restore options
  8.19.8 Directives to control generation of MIPS ASE instructions
  •  8.20.3.1 Special Characters
    8.20.3.2 Symbols
    8.20.3.3 Register names
    8.20.3.4 Assembler Directives
  8.20.1 Command-line Options
  8.20.2 Instruction expansion
  8.20.3 Syntax
  8.20.4 Differences to mmixal
  •  8.21.1.1 Code Generation Options
    8.21.1.2 Instruction Set Extention Options
    8.21.1.3 CPU Model Options
    8.21.1.4 Machine Model Options
  8.21.1 Options
  8.21.2 Assembler Directives
  8.21.3 PDP-11 Assembly Language Syntax
  8.21.4 Instruction Naming
  8.21.5 Synthetic Instructions8.22.1 Options8.23.1 Options
  •  8.24.2.1 Special Characters
    8.24.2.2 Register Names
    8.24.2.3 Addressing Modes
  8.24.1 Options
  8.24.2 Syntax
  8.24.3 Floating Point
  8.24.4 SH Machine Directives
  8.24.5 Opcodes
  •  8.25.2.1 Special Characters
    8.25.2.2 Register Names
    8.25.2.3 Addressing Modes
  8.25.1 Options
  8.25.2 Syntax
  8.25.3 SH64 Machine Directives
  8.25.4 Opcodes8.26.1 Options
  8.26.2 Enforcing aligned data
  8.26.3 Floating Point
  8.26.4 Sparc Machine Directives
  •  8.27.2.1 Special Characters
    8.27.2.2 Register Names
    8.27.2.3 Addressing Modes
  8.27.1 Options
  8.27.2 Syntax
  8.27.3 Assembler Directives for the Z8000
  8.27.4 Opcodes8.28.1 VAX Command-Line Options
  8.28.2 VAX Floating Point
  8.28.3 Vax Machine Directives
  8.28.4 VAX Opcodes
  8.28.5 VAX Branch Improvement
  8.28.6 VAX Operands
  8.28.7 Not Supported on VAX
  •  8.29.2.1 Special Characters
    8.29.2.2 Register Names
  8.29.1 Options
  8.29.2 Syntax
  8.29.3 Floating Point
  8.29.4 V850 Machine Directives
  8.29.5 Opcodes

8.1 AMD 29K Dependent Features
8.2 Alpha Dependent Features
8.3 ARC Dependent Features
8.4 ARM Dependent Features
8.5 CRIS Dependent Features
8.6 D10V Dependent Features
8.7 D30V Dependent Features
8.8 H8/300 Dependent Features
8.9 H8/500 Dependent Features
8.10 HPPA Dependent Features
8.11 ESA/390 Dependent Features
8.12 80386 Dependent Features
8.13 Intel i860 Dependent Features
8.14 Intel 80960 Dependent Features
8.15 M32R Dependent Features
8.16 M680x0 Dependent Features
8.17 M68HC11 and M68HC12 Dependent Features
8.18 Motorola M88K Dependent Features
8.19 MIPS Dependent Features
8.20 MMIX Dependent Features
8.21 PDP-11 Dependent Features
8.22 picoJava Dependent Features
8.23 PowerPC Dependent Features
8.24 Hitachi SH Dependent Features
8.25 Hitachi SH64 Dependent Features
8.26 SPARC Dependent Features
8.27 Z8000 Dependent Features
8.28 VAX Dependent Features
8.29 v850 Dependent Features

9. Reporting Bugs

9.1 Have you found a bug?
9.2 How to report bugs

10. Acknowledgements
11. GNU Free Documentation License
Index