# Introduction

This document describes the Qualcomm® Hexagon™ gprof Profiler
utility, which displays information on the execution history of a
program written for the Hexagon processor. This document is a
reference for experienced C programmers with assembly language
experience.

## Conventions

Courier font is used for computer text and code samples:

unsigned long long hexagon\_sim\_read\_pcycles()

The following notation is used to define command syntax:

- Square brackets enclose optional items (e.g., [**label**]).
- **Bold** indicates literal symbols (e.g., **[***comment***]**).
- An ellipsis, …, follows items that can appear more than once.

## Technical assistance

For assistance or clarification on information in this document,
submit a case to Qualcomm Technologies, Inc. (QTI) at
[https://createpoint.qti.qualcomm.com/](https://createpoint.qti.qualcomm.com/).

If you do not have access to the CDMATech Support website, register
for access or send email to
[support.cdmatech@qti.qualcomm.com.](mailto:support.cdmatech%40qti.qualcomm.com)

Last Published: Oct 06, 2026

[Previous Topic
gprof Profiler User Guide](https://docs.qualcomm.com/bundle/publicresource/80-N3040-23/topics/index_80-n2040-29_gprof_profiler_user_guide.md) [Next Topic
Overview](https://docs.qualcomm.com/bundle/publicresource/80-N3040-23/topics/gprof-profiler-ug-overview.md)