/*
  StarForth — Steady-State Virtual Machine Runtime

  Copyright (c) 2023–2025 Robert A. James
  All rights reserved.

  This file is part of the StarForth project.

  Licensed under the StarForth License, Version 1.0 (the "License");
  you may not use this file except in compliance with the License.
*/

/**
 * acpi.h - Finding an ACPI table from the RSDP (FABRIC-3.10.8 MC-1b).
 *
 * Shared by the core enumeration of amd64 (MADT Local APIC entries) and
 * aarch64 (MADT GICC entries, when the firmware hands over ACPI rather
 * than a devicetree, as QEMU's AAVMF does).
 */
#ifndef STARKERNEL_ACPI_H
#define STARKERNEL_ACPI_H

#include <stdint.h>

/* The first XSDT-listed table whose 4-byte signature is `sig`, or NULL.
 * `rsdp` is BootInfo->acpi_table (ACPI 2.0+ RSDP); NULL-safe. */
const uint8_t *acpi_find_table(const void *rsdp, const char *sig);

/* A table's length field (bytes 4..7 of its header). */
uint32_t acpi_table_length(const uint8_t *table);

#endif /* STARKERNEL_ACPI_H */