# Application Binary Interface User Guide

Contents

- [Introduction](https://docs.qualcomm.com/doc/80-N3040-23/topic/abi-ug-introduction.html)
    - [Conventions](https://docs.qualcomm.com/doc/80-N3040-23/topic/abi-ug-introduction.html#conventions)
    - [Technical assistance](https://docs.qualcomm.com/doc/80-N3040-23/topic/abi-ug-introduction.html#technical-assistance)
- [ABI overview](https://docs.qualcomm.com/doc/80-N3040-23/topic/abi-overview.html)
- [Data types](https://docs.qualcomm.com/doc/80-N3040-23/topic/data-types.html)
    - [Basic data types](https://docs.qualcomm.com/doc/80-N3040-23/topic/data-types.html#basic-data-types)
    - [Memory alignment](https://docs.qualcomm.com/doc/80-N3040-23/topic/data-types.html#memory-alignment)
- [Software stack](https://docs.qualcomm.com/doc/80-N3040-23/topic/abi-software-stack.html)
    - [Stack sections](https://docs.qualcomm.com/doc/80-N3040-23/topic/abi-software-stack.html#stack-sections)
- [Parameter passing](https://docs.qualcomm.com/doc/80-N3040-23/topic/parameter-passing.html)
    - [Fixed argument list function calls](https://docs.qualcomm.com/doc/80-N3040-23/topic/parameter-passing.html#fixed-argument-list-function-calls)
    - [Variable argument list function calls](https://docs.qualcomm.com/doc/80-N3040-23/topic/parameter-passing.html#variable-argument-list-function-calls)
    - [Calling Conventions for vXi1 Call Operands](https://docs.qualcomm.com/doc/80-N3040-23/topic/parameter-passing.html#calling-conventions-for-vxi1-call-operands)
    - [Vector register usage for function calls](https://docs.qualcomm.com/doc/80-N3040-23/topic/parameter-passing.html#vector-register-usage-for-function-calls)
    - [HVX Calling Conventions for vXi1 Call Operands](https://docs.qualcomm.com/doc/80-N3040-23/topic/parameter-passing.html#hvx-calling-conventions-for-vxi1-call-operands)
- [Return values](https://docs.qualcomm.com/doc/80-N3040-23/topic/return-values.html)
    - [Example:](https://docs.qualcomm.com/doc/80-N3040-23/topic/return-values.html#example)
- [Register usage across calls](https://docs.qualcomm.com/doc/80-N3040-23/topic/register-usage-across-calls.html)
    - [Outgoing memory arguments](https://docs.qualcomm.com/doc/80-N3040-23/topic/register-usage-across-calls.html#outgoing-memory-arguments)
- [C++ exception handling](https://docs.qualcomm.com/doc/80-N3040-23/topic/cpp-exception-handling.html)
- [Operating system interface](https://docs.qualcomm.com/doc/80-N3040-23/topic/operating-system-interface.html)
- [Process initialization](https://docs.qualcomm.com/doc/80-N3040-23/topic/process-initialization.html)
    - [Special registers](https://docs.qualcomm.com/doc/80-N3040-23/topic/process-initialization.html#special-registers)
    - [General registers](https://docs.qualcomm.com/doc/80-N3040-23/topic/process-initialization.html#general-registers)
- [Program loading](https://docs.qualcomm.com/doc/80-N3040-23/topic/program-loading.html)
    - [Position-independent objects](https://docs.qualcomm.com/doc/80-N3040-23/topic/program-loading.html#position-independent-objects)
- [Object files](https://docs.qualcomm.com/doc/80-N3040-23/topic/object-files.html)
    - [Compatibility](https://docs.qualcomm.com/doc/80-N3040-23/topic/object-files.html#compatibility)
    - [ELF header](https://docs.qualcomm.com/doc/80-N3040-23/topic/object-files.html#elf-header)
    - [Sections](https://docs.qualcomm.com/doc/80-N3040-23/topic/object-files.html#sections)
    - [Relocation](https://docs.qualcomm.com/doc/80-N3040-23/topic/object-files.html#relocation)
    - [Linker-generated symbols](https://docs.qualcomm.com/doc/80-N3040-23/topic/object-files.html#linker-generated-symbols)
- [Program headers](https://docs.qualcomm.com/doc/80-N3040-23/topic/program-headers.html)
- [Dynamic linking](https://docs.qualcomm.com/doc/80-N3040-23/topic/dynamic-linking.html)
    - [Dynamic section](https://docs.qualcomm.com/doc/80-N3040-23/topic/dynamic-linking.html#dynamic-section)
    - [Global offset table](https://docs.qualcomm.com/doc/80-N3040-23/topic/dynamic-linking.html#global-offset-table)
    - [Procedure linkage table](https://docs.qualcomm.com/doc/80-N3040-23/topic/dynamic-linking.html#procedure-linkage-table)
- [Thread-local storage](https://docs.qualcomm.com/doc/80-N3040-23/topic/thread-local-storage.html)
    - [Thread-local storage section](https://docs.qualcomm.com/doc/80-N3040-23/topic/thread-local-storage.html#thread-local-storage-section)
    - [Runtime allocation](https://docs.qualcomm.com/doc/80-N3040-23/topic/thread-local-storage.html#runtime-allocation)
    - [Load-time allocation](https://docs.qualcomm.com/doc/80-N3040-23/topic/thread-local-storage.html#load-time-allocation)
    - [Interface](https://docs.qualcomm.com/doc/80-N3040-23/topic/thread-local-storage.html#interface)
    - [Thread-local storage access](https://docs.qualcomm.com/doc/80-N3040-23/topic/thread-local-storage.html#thread-local-storage-access)
- [Coding examples](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html)
    - [Register use](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#register-use)
    - [Assembler symbols](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#assembler-symbols)
    - [Addressing constraints](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#addressing-constraints)
    - [Function prologs and epilogs](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#function-prologs-and-epilogs)
    - [Direct function call](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#direct-function-call)
    - [Indirect function call](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#indirect-function-call)
    - [Direct branch](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#direct-branch)
    - [Indirect branch](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#indirect-branch)
    - [Data access](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#data-access)
    - [Thread-local storage](https://docs.qualcomm.com/doc/80-N3040-23/topic/coding-examples.html#thread-local-storage)

Last Published: Oct 06, 2026

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