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Kernel: ACPI implement SizeOf

This commit is contained in:
Bananymous 2024-06-25 23:24:51 +03:00
parent 0179f5ea09
commit 60a05412c9
2 changed files with 57 additions and 0 deletions
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54
kernel/include/kernel/ACPI/AML/SizeOf.h Normal file
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@ -0,0 +1,54 @@
#pragma once
#include <kernel/ACPI/AML/Buffer.h>
#include <kernel/ACPI/AML/Names.h>
#include <kernel/ACPI/AML/Package.h>
#include <kernel/ACPI/AML/ParseContext.h>
#include <kernel/ACPI/AML/Reference.h>
namespace Kernel::ACPI::AML
{
struct SizeOf
{
static ParseResult parse(ParseContext& context)
{
ASSERT(context.aml_data.size() >= 1);
ASSERT(static_cast<Byte>(context.aml_data[0]) == Byte::SizeOfOp);
context.aml_data = context.aml_data.slice(1);
auto object_result = AML::parse_object(context);
if (!object_result.success())
return ParseResult::Failure;
auto object = object_result.node()->evaluate();
if (object && object->type == AML::Node::Type::Reference)
object = static_cast<AML::Reference*>(object.ptr())->node->evaluate();
if (!object)
{
AML_ERROR("SizeOf object is null");
return ParseResult::Failure;
}
uint64_t size = 0;
switch (object->type)
{
case AML::Node::Type::Buffer:
size = static_cast<AML::Buffer*>(object.ptr())->buffer.size();
break;
case AML::Node::Type::String:
size = static_cast<AML::String*>(object.ptr())->string.size();
break;
case AML::Node::Type::Package:
size = static_cast<AML::Package*>(object.ptr())->elements.size();
break;
default:
AML_ERROR("SizeOf object is not a buffer, string or package ({})", static_cast<uint8_t>(object->type));
return ParseResult::Failure;
}
return ParseResult(MUST(BAN::RefPtr<Integer>::create(size)));
}
};
}

3
kernel/kernel/ACPI/AML/Node.cpp
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@ -17,6 +17,7 @@
#include <kernel/ACPI/AML/Processor.h>
#include <kernel/ACPI/AML/Reference.h>
#include <kernel/ACPI/AML/Region.h>
#include <kernel/ACPI/AML/SizeOf.h>
#include <kernel/ACPI/AML/Sleep.h>
#include <kernel/ACPI/AML/Store.h>
#include <kernel/ACPI/AML/String.h>
@ -176,6 +177,8 @@ namespace Kernel::ACPI
return AML::Index::parse(context);
case AML::Byte::NotifyOp:
return AML::Notify::parse(context);
case AML::Byte::SizeOfOp:
return AML::SizeOf::parse(context);
case AML::Byte::NoopOp:
context.aml_data = context.aml_data.slice(1);
return ParseResult::Success;