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Linker User Guide

Preface Overview of the Linker Linking Models Supported by armlink Image Structure and Generation Linker Optimization Features Getting Image Details Accessing and Managing Symbols with armlink Scatter-loading Features Scatter File Syntax Linker Command-line Options --any_contingency --any_placement=algorithm --any_sort_order=order --api, --no_api --arm_only --autoat, --no_autoat --be8 --be32 --bestdebug, --no_bestdebug --blx_arm_thumb, --no_blx_arm_thumb --blx_thumb_arm, --no_blx_thumb_arm --branchnop, --no_branchnop --callgraph, --no_callgraph --callgraph_file=filename --callgraph_output=fmt --callgraph_subset=symbol[,symbol,...] --cgfile=type --cgsymbol=type --cgundefined=type --comment_section, --no_comment_section --compress_debug, --no_compress_debug --cpp_compat linker option --cppinit, --no_cppinit --cpu=list --cpu=name --crosser_veneershare, --no_crosser_veneershare --datacompressor=opt --debug, --no_debug --diag_error=tag[,tag,…] --diag_remark=tag[,tag,…] --diag_style=arm|ide|gnu --diag_suppress=tag[,tag,…] --diag_warning=tag[,tag,…] --eager_load_debug, --no_eager_load_debug --edit=file_list --emit_debug_overlay_relocs --emit_debug_overlay_section --emit_non_debug_relocs --emit_relocs --entry=location --errors=filename --exceptions, --no_exceptions --feedback=filename --feedback_image=option --feedback_type=type --filtercomment, --no_filtercomment --fini=symbol --first=section_id --force_explicit_attr --fpu=list --fpu=name --help --info=topic[,topic,…] --info_lib_prefix=opt --init=symbol --inline, --no_inline --inline_type=type --inlineveneer, --no_inlineveneer input-file-list --keep=section_id --largeregions, --no_largeregions --last=section_id --ldpartial --legacyalign, --no_legacyalign --libpath=pathlist --library_type=lib --liclinger=seconds --list=filename --list_mapping_symbols, --no_list_mapping_symbols --load_addr_map_info, --no_load_addr_map_info --locals, --no_locals --mangled, --unmangled --map, --no_map --match=crossmangled --max_er_extension=size --max_veneer_passes=value --max_visibility=type --merge, --no_merge --muldefweak, --no_muldefweak -o filename, --output=filename --output_float_abi=option --override_visibility --pad=num --paged --pagesize=pagesize --partial --piveneer, --no_piveneer --predefine="string" --reduce_paths, --no_reduce_paths --ref_cpp_init, --no_ref_cpp_init --reloc --remarks --remove, --no_remove --ro_base=address --ropi --rosplit --rw_base=address --rwpi --scanlib, --no_scanlib --scatter=filename --section_index_display=type --show_cmdline --show_full_path --show_parent_lib --show_sec_idx --sort=algorithm --split --startup=symbol, --no_startup --strict --strict_enum_size, --no_strict_enum_size --strict_flags, --no_strict_flags --strict_ph, --no_strict_ph --strict_relocations, --no_strict_relocations --strict_symbols, --no_strict_symbols --strict_visibility, --no_strict_visibility --strict_wchar_size, --no_strict_wchar_size --symbols, --no_symbols --symdefs=filename --tailreorder, --no_tailreorder --thumb2_library, --no_thumb2_library --tiebreaker=option --unaligned_access, --no_unaligned_access --undefined=symbol --undefined_and_export=symbol --unresolved=symbol --use_definition_visibility --userlibpath=pathlist --veneerinject, --no_veneerinject --veneer_inject_type=type --veneer_pool_size=size --veneershare, --no_veneershare --verbose --version_number --vfemode=mode --via=filename --vsn --xo_base=address --xref, --no_xref --xrefdbg, --no_xrefdbg --xref{from|to}=object(section) --zi_base=address Linker Steering File Command Reference Via File Syntax

--pad=num

9.83 --pad=num

Enables you to set a value for padding bytes. The linker assigns this value to all padding bytes inserted in load or execution regions.

Syntax

--pad=num
Where num is an integer, which can be given in hexadecimal format.
For example, setting num to 0xFF might help to speed up ROM programming time. If num is greater than 0xFF, then the padding byte is cast to a char, that is (char)num.

Usage

Padding is only inserted:
  • Within load regions. No padding is present between load regions.
  • Between fixed execution regions (in addition to forcing alignment). Padding is not inserted up to the maximum length of a load region unless it has a fixed execution region at the top.
  • Between sections to ensure that they conform to alignment constraints.
Non-ConfidentialPDF file icon PDF versionARM DUI0377H
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