UACPI

ACPI
RSDP
Fixed Tables
BGRT FADT MADT RSDT/XSDT SRAT
Differentiated Tables
DSDT SSDT AML
Tools/Libs
ACPICA uACPI LAI

uACPI is a portable and easy-to-integrate implementation of the Advanced Configuration and Power Interface (ACPI).

Its main focuses are full NT compatibility, safety, and minimization of stack usage by avoiding recursion entirely.

The project is licensed under the MIT license.

Features

• A complete & well-tested AML interpreter
• Operation region subsystem, support for user-defined address space handlers & builtin handlers for SystemMemory/SystemIO/PCI_Config/TableData
• User-defined device notify handlers & dispatch
• A complete resource subsystem. Every resource defined by ACPI 6.5 (last release) is supported
• Sleep API, allowing reset, transition to any sleep state, wake vector programming API
• An advanced event subsystem, supporting GPE/fixed events, wake, implicit notify, AML handlers
• PCI routing table retrieval & interrupt model API
• Device search API

uACPI has been tested and confirmed to work on many real computers, both new and old, desktops and laptops. It has also been extensively fuzzed against both real world AML blobs & its own test suite.

The test suite runs on every commit and tests multiple types of configuration, including 64 and 32 bit builds on Windows (MSVC), Linux (GCC) and MacOS (AppleClang).

Why use uACPI if ACPICA is a thing?

This is discussed in great detail in the project's README.