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authorLiam <byteslice@airmail.cc>2023-10-23 03:16:38 +0200
committerLiam <byteslice@airmail.cc>2023-11-10 18:01:35 +0100
commit2a255b2d61a445fb2b83cc8af7632e3d720e1292 (patch)
tree37f5c16ba52339d91e57c5b975639dc1eb60b9f7 /src/common
parentMerge pull request #11981 from lucasreis1/patch (diff)
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Diffstat (limited to 'src/common')
-rw-r--r--src/common/page_table.cpp30
-rw-r--r--src/common/page_table.h17
2 files changed, 29 insertions, 18 deletions
diff --git a/src/common/page_table.cpp b/src/common/page_table.cpp
index 4b1690269..166dc3dce 100644
--- a/src/common/page_table.cpp
+++ b/src/common/page_table.cpp
@@ -9,12 +9,12 @@ PageTable::PageTable() = default;
PageTable::~PageTable() noexcept = default;
-bool PageTable::BeginTraversal(TraversalEntry& out_entry, TraversalContext& out_context,
- u64 address) const {
+bool PageTable::BeginTraversal(TraversalEntry* out_entry, TraversalContext* out_context,
+ Common::ProcessAddress address) const {
// Setup invalid defaults.
- out_entry.phys_addr = 0;
- out_entry.block_size = page_size;
- out_context.next_page = 0;
+ out_entry->phys_addr = 0;
+ out_entry->block_size = page_size;
+ out_context->next_page = 0;
// Validate that we can read the actual entry.
const auto page = address / page_size;
@@ -29,20 +29,20 @@ bool PageTable::BeginTraversal(TraversalEntry& out_entry, TraversalContext& out_
}
// Populate the results.
- out_entry.phys_addr = phys_addr + address;
- out_context.next_page = page + 1;
- out_context.next_offset = address + page_size;
+ out_entry->phys_addr = phys_addr + GetInteger(address);
+ out_context->next_page = page + 1;
+ out_context->next_offset = GetInteger(address) + page_size;
return true;
}
-bool PageTable::ContinueTraversal(TraversalEntry& out_entry, TraversalContext& context) const {
+bool PageTable::ContinueTraversal(TraversalEntry* out_entry, TraversalContext* context) const {
// Setup invalid defaults.
- out_entry.phys_addr = 0;
- out_entry.block_size = page_size;
+ out_entry->phys_addr = 0;
+ out_entry->block_size = page_size;
// Validate that we can read the actual entry.
- const auto page = context.next_page;
+ const auto page = context->next_page;
if (page >= backing_addr.size()) {
return false;
}
@@ -54,9 +54,9 @@ bool PageTable::ContinueTraversal(TraversalEntry& out_entry, TraversalContext& c
}
// Populate the results.
- out_entry.phys_addr = phys_addr + context.next_offset;
- context.next_page = page + 1;
- context.next_offset += page_size;
+ out_entry->phys_addr = phys_addr + context->next_offset;
+ context->next_page = page + 1;
+ context->next_offset += page_size;
return true;
}
diff --git a/src/common/page_table.h b/src/common/page_table.h
index e653d52ad..5340f7d86 100644
--- a/src/common/page_table.h
+++ b/src/common/page_table.h
@@ -6,6 +6,7 @@
#include <atomic>
#include "common/common_types.h"
+#include "common/typed_address.h"
#include "common/virtual_buffer.h"
namespace Common {
@@ -100,9 +101,9 @@ struct PageTable {
PageTable(PageTable&&) noexcept = default;
PageTable& operator=(PageTable&&) noexcept = default;
- bool BeginTraversal(TraversalEntry& out_entry, TraversalContext& out_context,
- u64 address) const;
- bool ContinueTraversal(TraversalEntry& out_entry, TraversalContext& context) const;
+ bool BeginTraversal(TraversalEntry* out_entry, TraversalContext* out_context,
+ Common::ProcessAddress address) const;
+ bool ContinueTraversal(TraversalEntry* out_entry, TraversalContext* context) const;
/**
* Resizes the page table to be able to accommodate enough pages within
@@ -117,6 +118,16 @@ struct PageTable {
return current_address_space_width_in_bits;
}
+ bool GetPhysicalAddress(Common::PhysicalAddress* out_phys_addr,
+ Common::ProcessAddress virt_addr) const {
+ if (virt_addr > (1ULL << this->GetAddressSpaceBits())) {
+ return false;
+ }
+
+ *out_phys_addr = backing_addr[virt_addr / page_size] + GetInteger(virt_addr);
+ return true;
+ }
+
/**
* Vector of memory pointers backing each page. An entry can only be non-null if the
* corresponding attribute element is of type `Memory`.