SPRUI03E June   2015  – January 2023

 

  1.   Read This First
    1.     About This Manual
    2.     How to Use This Manual
    3.     Notational Conventions
    4.     Related Documentation From Texas Instruments
    5.     Trademarks
  2. 1 Introduction to the Software Development Tools
    1. 1.1 Software Development Tools Overview
    2. 1.2 Tools Descriptions
  3. 2 Introduction to Object Modules
    1. 2.1 Object File Format Specifications
    2. 2.2 Executable Object Files
    3. 2.3 Introduction to Sections
      1. 2.3.1 Special Section Names
    4. 2.4 How the Assembler Handles Sections
      1. 2.4.1 Uninitialized Sections
      2. 2.4.2 Initialized Sections
      3. 2.4.3 User-Named Sections
      4. 2.4.4 Current Section
      5. 2.4.5 Section Program Counters
      6. 2.4.6 Subsections
      7. 2.4.7 Using Sections Directives
    5. 2.5 How the Linker Handles Sections
      1. 2.5.1 Combining Input Sections
      2. 2.5.2 Placing Sections
    6. 2.6 Symbols
      1. 2.6.1 Global (External) Symbols
      2. 2.6.2 Local Symbols
      3. 2.6.3 Weak Symbols
      4. 2.6.4 The Symbol Table
    7. 2.7 Symbolic Relocations
    8. 2.8 Loading a Program
  4. 3 Program Loading and Running
    1. 3.1 Loading
      1. 3.1.1 Load and Run Addresses
      2. 3.1.2 Bootstrap Loading
        1. 3.1.2.1 Boot, Load, and Run Addresses
        2. 3.1.2.2 Primary Bootloader
    2. 3.2 Entry Point
    3. 3.3 Run-Time Initialization
      1. 3.3.1 The _c_int00 Function
      2. 3.3.2 RAM Model vs. ROM Model
        1. 3.3.2.1 Autoinitializing Variables at Run Time (--rom_model)
        2. 3.3.2.2 Initializing Variables at Load Time (--ram_model)
        3. 3.3.2.3 The --rom_model and --ram_model Linker Options
      3. 3.3.3 About Linker-Generated Copy Tables
        1. 3.3.3.1 BINIT
        2. 3.3.3.2 CINIT
    4. 3.4 Arguments to main
    5. 3.5 Run-Time Relocation
    6. 3.6 Additional Information
  5. 4 Assembler Description
    1. 4.1  Assembler Overview
    2. 4.2  The Assembler's Role in the Software Development Flow
    3. 4.3  Invoking the Assembler
    4. 4.4  The Application Binary Interface
    5. 4.5  Naming Alternate Directories for Assembler Input
      1. 4.5.1 Using the --include_path Assembler Option
      2. 4.5.2 Using the C6X_A_DIR Environment Variable
    6. 4.6  Source Statement Format
      1. 4.6.1 Label Field
      2. 4.6.2 Mnemonic Field
      3. 4.6.3 Unit Specifier Field
      4. 4.6.4 Operand Field
      5. 4.6.5 Comment Field
    7. 4.7  Literal Constants
      1. 4.7.1 Integer Literals
        1. 4.7.1.1 Binary Integer Literals
        2. 4.7.1.2 Octal Integer Literals
        3. 4.7.1.3 Decimal Integer Literals
        4. 4.7.1.4 Hexadecimal Integer Literals
        5. 4.7.1.5 Character Literals
      2. 4.7.2 Character String Literals
      3. 4.7.3 Floating-Point Literals
    8. 4.8  Assembler Symbols
      1. 4.8.1  Identifiers
      2. 4.8.2  Labels
      3. 4.8.3  Local Labels
        1. 4.8.3.1 Local Labels of the Form $n
        2.       80
        3. 4.8.3.2 Local Labels of the Form name?
        4.       82
      4. 4.8.4  Symbolic Constants
      5. 4.8.5  Defining Symbolic Constants (--asm_define Option)
      6. 4.8.6  Predefined Symbolic Constants
      7. 4.8.7  Registers
      8. 4.8.8  Register Pairs
      9. 4.8.9  Register Quads (C6600 Only)
      10. 4.8.10 Substitution Symbols
    9. 4.9  Expressions
      1. 4.9.1 Mathematical and Logical Operators
      2. 4.9.2 Relational Operators and Conditional Expressions
      3. 4.9.3 Well-Defined Expressions
      4. 4.9.4 Legal Expressions
      5. 4.9.5 Expression Examples
    10. 4.10 Built-in Functions and Operators
      1. 4.10.1 Built-In Math and Trigonometric Functions
      2. 4.10.2 C6x Built-In ELF Relocation Generating Operators
        1. 4.10.2.1 $DPR_BYTE(sym) / $DPR_HWORD(sym) / $DPR_WORD(sym)
        2. 4.10.2.2 $LABEL_DIFF(x,y) Operator
    11. 4.11 Source Listings
    12. 4.12 Debugging Assembly Source
    13. 4.13 Cross-Reference Listings
  6. 5 Assembler Directives
    1. 5.1  Directives Summary
    2. 5.2  Directives that Define Sections
    3. 5.3  Directives that Initialize Values
    4. 5.4  Directives that Perform Alignment and Reserve Space
    5. 5.5  Directives that Format the Output Listings
    6. 5.6  Directives that Reference Other Files
    7. 5.7  Directives that Enable Conditional Assembly
    8. 5.8  Directives that Define Union or Structure Types
    9. 5.9  Directives that Define Enumerated Types
    10. 5.10 Directives that Define Symbols at Assembly Time
    11. 5.11 Miscellaneous Directives
    12. 5.12 Directives Reference
      1.      .align
      2.      .asg/.define/.eval
      3.      .asmfunc/.endasmfunc
      4.      .bits
      5.      .bss
      6.      .byte/.ubyte/.char/.uchar
      7.      .cdecls
      8.      .common
      9.      .copy/.include
      10.      .cstruct/.cunion/.endstruct/.endunion/.tag
      11.      .data
      12.      .double
      13.      .drlist/.drnolist
      14.      .elfsym
      15.      .emsg/.mmsg/.wmsg
      16.      .end
      17.      .farcommon/.nearcommon
      18.      .fclist/.fcnolist
      19.      .field
      20.      .float
      21.      .global/.def/.ref
      22.      .group/.gmember/.endgroup
      23.      .half/.short/.uhalf/.ushort
      24.      .if/.elseif/.else/.endif
      25.      .int/.unint/.long/.ulong/.word/.uword
      26.      .label
      27.      .length/.width
      28.      .list/.nolist
      29.      .loop/.endloop/.break
      30.      .macro/.endm
      31.      .map/.clearmap
      32.      .mlib
      33.      .mlist/.mnolist
      34.      .newblock
      35.      .nocmp
      36.      .noremark/.remark
      37.      .option
      38.      .page
      39.      .retain / .retainrefs
      40.      .sect
      41.      .set/.equ
      42.      .space/.bes
      43.      .sslist/.ssnolist
      44.      .string/.cstring
      45.      .struct/.endstruct/.tag
      46.      .symdepend
      47.      .tab
      48.      .text
      49.      .title
      50.      .unasg/.undefine
      51.      .union/.endunion/.tag
      52.      .usect
      53.      .var
      54.      .weak
  7. 6 Macro Language Description
    1. 6.1  Using Macros
    2. 6.2  Defining Macros
    3. 6.3  Macro Parameters/Substitution Symbols
      1. 6.3.1 Directives That Define Substitution Symbols
      2. 6.3.2 Built-In Substitution Symbol Functions
      3. 6.3.3 Recursive Substitution Symbols
      4. 6.3.4 Forced Substitution
      5. 6.3.5 Accessing Individual Characters of Subscripted Substitution Symbols
      6. 6.3.6 Substitution Symbols as Local Variables in Macros
    4. 6.4  Macro Libraries
    5. 6.5  Using Conditional Assembly in Macros
    6. 6.6  Using Labels in Macros
    7. 6.7  Producing Messages in Macros
    8. 6.8  Using Directives to Format the Output Listing
    9. 6.9  Using Recursive and Nested Macros
    10. 6.10 Macro Directives Summary
  8. 7 Archiver Description
    1. 7.1 Archiver Overview
    2. 7.2 The Archiver's Role in the Software Development Flow
    3. 7.3 Invoking the Archiver
    4. 7.4 Archiver Examples
    5. 7.5 Library Information Archiver Description
      1. 7.5.1 Invoking the Library Information Archiver
      2. 7.5.2 Library Information Archiver Example
      3. 7.5.3 Listing the Contents of an Index Library
      4. 7.5.4 Requirements
  9. 8 Linker Description
    1. 8.1  Linker Overview
    2. 8.2  The Linker's Role in the Software Development Flow
    3. 8.3  Invoking the Linker
    4. 8.4  Linker Options
      1. 8.4.1  Wildcards in File, Section, and Symbol Patterns
      2. 8.4.2  Specifying C/C++ Symbols with Linker Options
      3. 8.4.3  Relocation Capabilities (--absolute_exe and --relocatable Options)
        1. 8.4.3.1 Producing an Absolute Output Module (--absolute_exe option)
        2. 8.4.3.2 Producing a Relocatable Output Module (--relocatable option)
      4. 8.4.4  Allocate Memory for Use by the Loader to Pass Arguments (--arg_size Option)
      5. 8.4.5  Compression (--cinit_compression and --copy_compression Option)
      6. 8.4.6  Compress DWARF Information (--compress_dwarf Option)
      7. 8.4.7  Control Linker Diagnostics
      8. 8.4.8  Automatic Library Selection (--disable_auto_rts and --multithread Options)
      9. 8.4.9  Do Not Remove Unused Sections (--unused_section_elimination Option)
      10. 8.4.10 Linker Command File Preprocessing (--disable_pp, --define and --undefine Options)
      11. 8.4.11 Error Correcting Code Testing (--ecc Options)
      12. 8.4.12 Define an Entry Point (--entry_point Option)
      13. 8.4.13 Set Default Fill Value (--fill_value Option)
      14. 8.4.14 Define Heap Size (--heap_size Option)
      15. 8.4.15 Hiding Symbols
      16. 8.4.16 Alter the Library Search Algorithm (--library, --search_path, and C6X_C_DIR )
        1. 8.4.16.1 Name an Alternate Library Directory (--search_path Option)
        2. 8.4.16.2 Name an Alternate Library Directory (C6X_C_DIR Environment Variable)
        3. 8.4.16.3 Exhaustively Read and Search Libraries (--reread_libs and --priority Options)
      17. 8.4.17 Change Symbol Localization
        1. 8.4.17.1 Make All Global Symbols Static (--make_static Option)
      18. 8.4.18 Create a Map File (--map_file Option)
      19. 8.4.19 Managing Map File Contents (--mapfile_contents Option)
      20. 8.4.20 Disable Name Demangling (--no_demangle)
      21. 8.4.21 Merging of Symbolic Debugging Information
      22. 8.4.22 Strip Symbolic Information (--no_symtable Option)
      23. 8.4.23 Name an Output Module (--output_file Option)
      24. 8.4.24 Prioritizing Function Placement (--preferred_order Option)
      25. 8.4.25 C Language Options (--ram_model and --rom_model Options)
      26. 8.4.26 Retain Discarded Sections (--retain Option)
      27. 8.4.27 Scan All Libraries for Duplicate Symbol Definitions (--scan_libraries)
      28. 8.4.28 Define Stack Size (--stack_size Option)
      29. 8.4.29 Mapping of Symbols (--symbol_map Option)
      30. 8.4.30 Generate Far Call Trampolines (--trampolines Option)
        1. 8.4.30.1 Advantages and Disadvantages of Using Trampolines
        2. 8.4.30.2 Minimizing the Number of Trampolines Required (--minimize_trampolines Option)
        3. 8.4.30.3 Making Trampoline Reservations Adjacent (--trampoline_min_spacing Option)
        4. 8.4.30.4 Carrying Trampolines From Load Space to Run Space
      31. 8.4.31 Introduce an Unresolved Symbol (--undef_sym Option)
      32. 8.4.32 Display a Message When an Undefined Output Section Is Created (--warn_sections)
      33. 8.4.33 Generate XML Link Information File (--xml_link_info Option)
      34. 8.4.34 Zero Initialization (--zero_init Option)
    5. 8.5  Linker Command Files
      1. 8.5.1  Reserved Names in Linker Command Files
      2. 8.5.2  Constants in Linker Command Files
      3. 8.5.3  Accessing Files and Libraries from a Linker Command File
      4. 8.5.4  The MEMORY Directive
        1. 8.5.4.1 Default Memory Model
        2. 8.5.4.2 MEMORY Directive Syntax
        3. 8.5.4.3 Expressions and Address Operators
      5. 8.5.5  The SECTIONS Directive
        1. 8.5.5.1 SECTIONS Directive Syntax
        2. 8.5.5.2 Section Allocation and Placement
          1. 8.5.5.2.1 Binding
          2. 8.5.5.2.2 Named Memory
          3. 8.5.5.2.3 Controlling Placement Using The HIGH Location Specifier
            1. 8.5.5.2.3.1 Linker Placement With the HIGH Specifier
            2.         262
            3. 8.5.5.2.3.2 Linker Placement Without HIGH Specifier
          4. 8.5.5.2.4 Alignment and Blocking
          5. 8.5.5.2.5 Alignment With Padding
        3. 8.5.5.3 Specifying Input Sections
          1. 8.5.5.3.1 The Most Common Method of Specifying Section Contents
          2.        268
        4. 8.5.5.4 Using Multi-Level Subsections
        5. 8.5.5.5 Specifying Library or Archive Members as Input to Output Sections
          1. 8.5.5.5.1 Archive Members to Output Sections
          2.        272
        6. 8.5.5.6 Allocation Using Multiple Memory Ranges
        7. 8.5.5.7 Automatic Splitting of Output Sections Among Non-Contiguous Memory Ranges
      6. 8.5.6  Placing a Section at Different Load and Run Addresses
        1. 8.5.6.1 Specifying Load and Run Addresses
        2.       277
        3. 8.5.6.2 Referring to the Load Address by Using the .label Directive
      7. 8.5.7  Using GROUP and UNION Statements
        1. 8.5.7.1 Grouping Output Sections Together
        2. 8.5.7.2 Overlaying Sections With the UNION Statement
        3. 8.5.7.3 Using Memory for Multiple Purposes
        4. 8.5.7.4 Nesting UNIONs and GROUPs
        5. 8.5.7.5 Checking the Consistency of Allocators
        6. 8.5.7.6 Naming UNIONs and GROUPs
      8. 8.5.8  Special Section Types (DSECT, COPY, NOLOAD, and NOINIT)
      9. 8.5.9  Configuring Error Correcting Code (ECC) with the Linker
        1. 8.5.9.1 Using the ECC Specifier in the Memory Map
        2. 8.5.9.2 Using the ECC Directive
        3. 8.5.9.3 Using the VFILL Specifier in the Memory Map
      10. 8.5.10 Assigning Symbols at Link Time
        1. 8.5.10.1 Syntax of Assignment Statements
        2. 8.5.10.2 Assigning the SPC to a Symbol
        3. 8.5.10.3 Assignment Expressions
        4. 8.5.10.4 Symbols Automatically Defined by the Linker
        5. 8.5.10.5 Assigning Exact Start, End, and Size Values of a Section to a Symbol
        6. 8.5.10.6 Why the Dot Operator Does Not Always Work
        7. 8.5.10.7 Address and Dimension Operators
          1. 8.5.10.7.1 Input Items
          2. 8.5.10.7.2 Output Section
          3. 8.5.10.7.3 GROUPs
          4. 8.5.10.7.4 UNIONs
      11. 8.5.11 Creating and Filling Holes
        1. 8.5.11.1 Initialized and Uninitialized Sections
        2. 8.5.11.2 Creating Holes
        3. 8.5.11.3 Filling Holes
        4. 8.5.11.4 Explicit Initialization of Uninitialized Sections
    6. 8.6  Linker Symbols
      1. 8.6.1 Using Linker Symbols in C/C++ Applications
      2. 8.6.2 Declaring Weak Symbols
      3. 8.6.3 Resolving Symbols with Object Libraries
    7. 8.7  Default Placement Algorithm
      1. 8.7.1 How the Allocation Algorithm Creates Output Sections
      2. 8.7.2 Reducing Memory Fragmentation
    8. 8.8  Using Linker-Generated Copy Tables
      1. 8.8.1 Using Copy Tables for Boot Loading
      2. 8.8.2 Using Built-in Link Operators in Copy Tables
      3. 8.8.3 Overlay Management Example
      4. 8.8.4 Generating Copy Tables With the table() Operator
        1. 8.8.4.1 The table() Operator
        2. 8.8.4.2 Boot-Time Copy Tables
        3. 8.8.4.3 Using the table() Operator to Manage Object Components
        4. 8.8.4.4 Linker-Generated Copy Table Sections and Symbols
        5. 8.8.4.5 Splitting Object Components and Overlay Management
      5. 8.8.5 Compression
        1. 8.8.5.1 Compressed Copy Table Format
        2. 8.8.5.2 Compressed Section Representation in the Object File
        3. 8.8.5.3 Compressed Data Layout
        4. 8.8.5.4 Run-Time Decompression
        5. 8.8.5.5 Compression Algorithms
        6.       331
      6. 8.8.6 Copy Table Contents
      7. 8.8.7 General Purpose Copy Routine
    9. 8.9  Partial (Incremental) Linking
    10. 8.10 Linking C/C++ Code
      1. 8.10.1 Run-Time Initialization
      2. 8.10.2 Object Libraries and Run-Time Support
      3. 8.10.3 Setting the Size of the Stack and Heap Sections
      4. 8.10.4 Initializing and AutoInitialzing Variables at Run Time
    11. 8.11 Linker Example
  10. 9 Object File Utilities
    1. 9.1 Invoking the Object File Display Utility
    2. 9.2 Invoking the Disassembler
    3. 9.3 Invoking the Name Utility
    4. 9.4 Invoking the Strip Utility
  11. 10Hex Conversion Utility Description
    1. 10.1  The Hex Conversion Utility's Role in the Software Development Flow
    2. 10.2  Invoking the Hex Conversion Utility
      1. 10.2.1 Invoking the Hex Conversion Utility From the Command Line
      2. 10.2.2 Invoking the Hex Conversion Utility With a Command File
    3. 10.3  Understanding Memory Widths
      1. 10.3.1 Target Width
      2. 10.3.2 Specifying the Memory Width
      3. 10.3.3 Partitioning Data Into Output Files
      4. 10.3.4 Specifying Word Order for Output Words
    4. 10.4  The ROMS Directive
      1. 10.4.1 When to Use the ROMS Directive
      2. 10.4.2 An Example of the ROMS Directive
    5. 10.5  The SECTIONS Directive
    6. 10.6  The Load Image Format (--load_image Option)
      1. 10.6.1 Load Image Section Formation
      2. 10.6.2 Load Image Characteristics
    7. 10.7  Excluding a Specified Section
    8. 10.8  Assigning Output Filenames
    9. 10.9  Image Mode and the --fill Option
      1. 10.9.1 Generating a Memory Image
      2. 10.9.2 Specifying a Fill Value
      3. 10.9.3 Steps to Follow in Using Image Mode
    10. 10.10 Array Output Format
    11. 10.11 Controlling the ROM Device Address
    12. 10.12 Control Hex Conversion Utility Diagnostics
    13. 10.13 Description of the Object Formats
      1. 10.13.1 ASCII-Hex Object Format (--ascii Option)
      2. 10.13.2 Intel MCS-86 Object Format (--intel Option)
      3. 10.13.3 Motorola Exorciser Object Format (--motorola Option)
      4. 10.13.4 Extended Tektronix Object Format (--tektronix Option)
      5. 10.13.5 Texas Instruments SDSMAC (TI-Tagged) Object Format (--ti_tagged Option)
      6. 10.13.6 TI-TXT Hex Format (--ti_txt Option)
        1. 10.13.6.1 TI-TXT Object Format
  12. 11Sharing C/C++ Header Files With Assembly Source
    1. 11.1 Overview of the .cdecls Directive
    2. 11.2 Notes on C/C++ Conversions
      1. 11.2.1  Comments
      2. 11.2.2  Conditional Compilation (#if/#else/#ifdef/etc.)
      3. 11.2.3  Pragmas
      4. 11.2.4  The #error and #warning Directives
      5. 11.2.5  Predefined symbol __ASM_HEADER__
      6. 11.2.6  Usage Within C/C++ asm( ) Statements
      7. 11.2.7  The #include Directive
      8. 11.2.8  Conversion of #define Macros
      9. 11.2.9  The #undef Directive
      10. 11.2.10 Enumerations
      11. 11.2.11 C Strings
      12. 11.2.12 C/C++ Built-In Functions
      13. 11.2.13 Structures and Unions
      14. 11.2.14 Function/Variable Prototypes
      15. 11.2.15 C Constant Suffixes
      16. 11.2.16 Basic C/C++ Types
    3. 11.3 Notes on C++ Specific Conversions
      1. 11.3.1 Name Mangling
      2. 11.3.2 Derived Classes
      3. 11.3.3 Templates
      4. 11.3.4 Virtual Functions
    4. 11.4 Special Assembler Support
      1. 11.4.1 Enumerations (.enum/.emember/.endenum)
      2. 11.4.2 The .define Directive
      3. 11.4.3 The .undefine/.unasg Directives
      4. 11.4.4 The $defined( ) Built-In Function
      5. 11.4.5 The $sizeof Built-In Function
      6. 11.4.6 Structure/Union Alignment and $alignof( )
      7. 11.4.7 The .cstring Directive
  13.   A Symbolic Debugging Directives
    1.     A.1 DWARF Debugging Format
    2.     A.2 Debug Directive Syntax
  14.   B XML Link Information File Description
    1.     B.1 XML Information File Element Types
    2.     B.2 Document Elements
      1.      B.2.1 Header Elements
      2.      B.2.2 Input File List
      3.      B.2.3 Object Component List
      4.      B.2.4 Logical Group List
      5.      B.2.5 Placement Map
      6.      B.2.6 Far Call Trampoline List
      7.      B.2.7 Symbol Table
  15.   C Glossary
    1.     C.1 Terminology
  16.   D Revision History
  17.   428
  18.   D Earlier Revisions

8.4 Linker Options

Linker options control linking operations. They can be placed on the command line or in a command file. Linker options must be preceded by a hyphen (-). Options can be separated from arguments (if they have them) by an optional space.

Table 8-1 Basic Options Summary
Option Alias Description Section
--run_linker -z Enables linking Section 9.4
--output_file -o Names the executable output module. The default filename is a.out. Section 9.5.23
--map_file -m Produces a map or listing of the input and output sections, including holes, and places the listing in filename Section 9.5.18
--stack_size -stack Sets C system stack size to size bytes and defines a global symbol that specifies the stack size. Default = 1K bytes Section 9.5.28
--heap_size -heap Sets heap size (for the dynamic memory allocation in C) to sizebytes and defines a global symbol that specifies the heap size. Default = 1K bytes Section 9.5.14
Table 8-2 File Search Path Options Summary
Option Alias Description Section
--library -l Names an archive library or link command filename as linker input Section 9.5.16
--disable_auto_rts Disables the automatic selection of a run-time-support library Section 9.5.8
--priority -priority Satisfies unresolved references by the first library that contains a definition for that symbol Section 9.5.16.3
--reread_libs -x Forces rereading of libraries, which resolves back references Section 9.5.16.3
--search_path -i Alters library-search algorithms to look in a directory named with pathname before looking in the default location. This option must appear before the --library option. Section 9.5.16.1
Table 8-3 Command File Preprocessing Options Summary
Option Alias Description Section
--define Predefines name as a preprocessor macro. Section 9.5.10
--undefine Removes the preprocessor macro name. Section 9.5.10
--disable_pp Disables preprocessing for command files Section 9.5.10
Table 8-4 Diagnostic Options Summary
Option Alias Description Section
--diag_error Categorizes the diagnostic identified by num as an error Section 9.5.7
--diag_remark Categorizes the diagnostic identified by num as a remark Section 9.5.7
--diag_suppress Suppresses the diagnostic identified by num Section 9.5.7
--diag_warning Categorizes the diagnostic identified by num as a warning Section 9.5.7
--display_error_number Displays a diagnostic's identifiers along with its text Section 9.5.7
--emit_references:file[=file] Emits a file containing section information. The information includes section size, symbols defined, and references to symbols. Section 9.5.7
--emit_warnings_as_errors -pdew Treats warnings as errors Section 9.5.7
--issue_remarks Issues remarks (nonserious warnings) Section 9.5.7
--no_demangle Disables demangling of symbol names in diagnostics Section 9.5.20
--no_warnings Suppresses warning diagnostics (errors are still issued) Section 9.5.7
--set_error_limit Sets the error limit to num. The linker abandons linking after this number of errors. (The default is 100.) Section 9.5.7
--verbose_diagnostics Provides verbose diagnostics that display the original source with line-wrap Section 9.5.7
--warn_sections -w Displays a message when an undefined output section is created Section 9.5.32
Table 8-5 Linker Output Options Summary
Option Alias Description Section
--absolute_exe -a Produces an absolute, executable module. This is the default; if neither --absolute_exe nor --relocatable is specified, the linker acts as if --absolute_exe were specified. Section 9.5.3.1
--ecc={ on | off } Enable linker-generated Error Correcting Codes (ECC). The default is off. Section 9.5.11
Section 9.6.9
--ecc:data_error Inject the specified errors into the output file for testing Section 9.5.11
Section 9.6.9
--ecc:ecc_error Inject the specified errors into the Error Correcting Code (ECC) for testing Section 9.5.11
Section 9.6.9
--mapfile_contents Controls the information that appears in the map file. Section 9.5.19
--relocatable -r Produces a nonexecutable, relocatable output module Section 9.5.3.2
--xml_link_info Generates a well-formed XML file containing detailed information about the result of a link Section 9.5.33
Table 8-6 Symbol Management Options Summary
Option Alias Description Section
--entry_point -e Defines a global symbol that specifies the primary entry point for the output module Section 9.5.12
--globalize Changes the symbol linkage to global for symbols that match pattern Section 9.5.17
--hide Hides global symbols that match pattern Section 9.5.15
--localize Changes the symbol linkage to local for symbols that match pattern Section 9.5.17
--make_global -g Makes symbol global (overrides -h) Section 9.5.17.1
--make_static -h Makes all global symbols static Section 9.5.17.1
--no_symtable -s Strips symbol table information and line number entries from the output module Section 9.5.22
--retain Retains a list of sections that otherwise would be discarded Section 9.5.26
--scan_libraries -scanlibs Scans all libraries for duplicate symbol definitions Section 9.5.27
--symbol_map Maps symbol references to a symbol definition of a different name Section 9.5.29
--undef_sym -u Places an unresolved external symbol into the output module's symbol table Section 9.5.31
--unhide Reveals (un-hides) global symbols that match pattern Section 9.5.15
Table 8-7 Run-Time Environment Options Summary
Option Alias Description Section
--arg_size --args Allocates memory to be used by the loader to pass arguments Section 9.5.4
--fill_value -f Sets default fill values for holes within output sections; fill_value is a 32-bit constant Section 9.5.13
--multithread Causes the linker to choose a thread-safe version of the RTS library when auto-selecting an RTS library or resolving a reference to libc.a, even if none of the input object files contain the TI build attribute placed by the --multithread compiler option. If you used the --openmp compiler option to create any of the object files, the --multithread option is enabled automatically. Section 9.5.8
--ram_model -cr Initializes variables at load time Section 9.5.25
--rom_model -c Autoinitializes variables at run time Section 9.5.25
--trampolines Generates far call trampolines; on by default Section 9.5.30
Table 8-8 Link-Time Optimization Options Summary
Option Alias Description Section
--cinit_compression [=compression_kind] Specifies the type of compression to apply to the c auto initialization data (default is rle) Section 9.5.5
--compress_dwarf Aggressively reduces the size of DWARF information from input object files Section 9.5.6
--copy_compression [=compression_kind] Compresses data copied by linker copy tables Section 9.5.5
--unused_section_elimination Eliminates sections that are not needed in the executable module; on by default Section 9.5.9
Table 8-9 Miscellaneous Options Summary
Option Alias Description Section
--linker_help -help Displays information about syntax and available options –
--minimize_trampolines Selects the trampoline minimization algorithm (argument is optional; algorithm is postorder by default) Section 9.5.30.2
--preferred_order Prioritizes placement of functions Section 9.5.24
--trampoline_min_spacing When trampoline reservations are spaced more closely than the specified limit, tries to make them adjacent Section 9.5.30.3
--zero_init Controls preinitialization of uninitialized variables. Default is on. Always off if --ram_model is used. Section 9.5.34