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--select=select_options

When used with --fieldoffsets or --text -a options, displays only those fields that match a specified pattern list.

Syntax

--select=select_options

Where select_options is a list of patterns to match. Use special characters to select multiple fields:

  • Use a comma-separated list to specify multiple fields, for example:

    a*,b*,c*

  • Use the wildcard character * to match any name.

  • Use the wildcard character ? to match any single letter.

  • Prefix the select_options string with + to specify the fields to include. This is the default behavior.

  • Prefix the select_options string with ~ to specify the fields to exclude.

If you are using a special character on Unix platforms, you must enclose the options in quotes to prevent the shell expanding the selection.

Usage

Use this option with either --fieldoffsets or --text -a.

Example

The output from the --fieldoffsets option might include the following data structure:

|structure.f1|                       EQU     0        ;  int16_t
|structure.f2|                       EQU     0x2      ;  int16_t
|structure.f3|                       EQU     0x4      ;  int16_t
|structure.f11|                      EQU     0x6      ;  int16_t
|structure.f21|                      EQU     0x8      ;  int16_t
|structure.f31|                      EQU     0xA      ;  int16_t
|structure.f111|                     EQU     0xC      ;  int16_t

To output only those fields that start with f1, enter:

fromelf --select=structure.f1* --fieldoffsets infile.axf

This produces the output:

|structure.f1|                       EQU     0        ;  int16_t
|structure.f11|                      EQU     0x6      ;  int16_t
|structure.f111|                     EQU     0xC      ;  int16_t

    END

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