function::usymname - Linux
Overview
function::usymname is a command-line tool for rewriting symbol names in a function using a given format. It allows users to transform and modify symbol names in a consistent and standardized way.
Syntax
function::usymname [options] <function> <format>
Options/Flags
- -h, –help: Display help and usage information.
- -q, –quiet: Suppress output except for errors.
- -v, –verbose: Enable verbose output, showing additional information about the transformation.
Examples
Simple Symbol Transformation:
function::usymname my_function my_prefix_%s
This rewrites the symbol name my_function
to my_prefix_my_function
.
Complex Format Manipulation:
function::usymname my_complex_function "($0)_(%i)"
This formats the symbol name as my_complex_function_(0)
, my_complex_function_(1)
, and so on, for multiple instances of the function.
Common Issues
- Symbol Not Found: Ensure the function name provided in
<function>
exists in the code. - Invalid Format String: The format string in
<format>
should follow proper C printf() syntax.
Integration
With Scripting:
#!/bin/bash
functions=$(grep -roh 'function [a-zA-Z_0-9]*\(' *.c)
for function in ${functions}; do
stripped_function=$(echo "${function}" | sed 's/function //g' | sed 's/(//g')
new_function_name="my_prefix_${stripped_function}"
function::usymname "${stripped_function}" "${new_function_name}"
done
This script automates the symbol name transformation for all functions in C source files.
Related Commands
- objdump: Display information about object files, including symbol names.
- nm: List symbols from object files or executables.