Summary of sections and blocks

In this section:

This table lists the ELF sections and blocks that are used by the IAR build tools:

Section	Description
`.bss`	Holds zero-initialized static and global variables.
`CSTACK`	Holds the stack used by C or C++ programs.
`.data`	Holds static and global initialized variables.
`.data_init`	Holds initial values for `.data` sections when the linker directive `initialize` is used.
`.dynamic`	See Shared object layout.
`.dynstr`	See Shared object layout.
`.dynsym`	See Shared object layout.
`.exc.text`	Holds exception-related code.
`.got`	See Shared object layout.
`.hash`	See Shared object layout.
`HEAP`	Holds the heap used for dynamically allocated data.
`__iar_tls$$DATA`	Holds the TLS area for the primary thread.
`__iar_tls$$INITDATA`	Holds initial values for the TLS area.
`.iar.dynexit`	Holds the `atexit` table.
`.iar.locale_table`	Holds the locale table for the selected locales.
`.init_array`	Holds a table of dynamic initialization functions.
`.intvec`	Holds the reset vector table
`IRQ_STACK`	Holds the stack for interrupt requests, IRQ, and exceptions.
`.noinit`	Holds `__no_init` static and global variables.
`.plt`	See Shared object layout.
`.preinit_array`	Holds a table of dynamic initialization functions.
`.prepreinit_array`	Holds a table of dynamic initialization functions.
`.rel.dyn`	See Shared object layout.
`.rel.plt`	See Shared object layout.
`.rodata`	Holds constant data.
`so_bss`	See Reference information on linker blocks for shared objects.
`so_code`	See Reference information on linker blocks for shared objects.
`so_const`	See Reference information on linker blocks for shared objects.
`so_data`	See Reference information on linker blocks for shared objects.
`.tbss`	Holds thread-local zero-initialized static and global variables for the primary thread.
`.tdata`	Holds thread-local initialized static and global variables for the primary thread.
`.text`	Holds the program code.
`.textrw`	Holds `__ramfunc` declared program code.
`.textrw_init`	Holds initializers for the `.textrw` declared section.
`.uninit`	See Shared object layout.
`Veneer$$CMSE`	Holds secure gateway veneers.

Table 110. Section summary

Other sections

In addition to the ELF sections used for your application, the tools use a number of other ELF sections for a variety of purposes:

Sections starting with .debug generally contain debug information in the DWARF format
Sections starting with .iar.debug contain supplemental debug information in an IAR format
The section .comment contains the tools and command lines used for building the file
Sections starting with .rel or .rela contain ELF relocation information
The section .symtab contains the symbol table for a file
The section .strtab contains the names of the symbol in the symbol table
The section .shstrtab contains the names of the sections.

IAR Embedded Workbench for Arm 9.70.x

Summary of sections and blocks

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