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-rw-r--r--src/core/memory.cpp25
-rw-r--r--src/core/memory.h7
2 files changed, 25 insertions, 7 deletions
diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index a6b5f6c99..c42f4326b 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -110,8 +110,8 @@ static u8* GetPointerFromVMA(VAddr vaddr) {
/**
* This function should only be called for virtual addreses with attribute `PageType::Special`.
*/
-static MMIORegionPointer GetMMIOHandler(VAddr vaddr) {
- for (const auto& region : current_page_table->special_regions) {
+static MMIORegionPointer GetMMIOHandler(const PageTable& page_table, VAddr vaddr) {
+ for (const auto& region : page_table.special_regions) {
if (vaddr >= region.base && vaddr < (region.base + region.size)) {
return region.handler;
}
@@ -120,6 +120,11 @@ static MMIORegionPointer GetMMIOHandler(VAddr vaddr) {
return nullptr; // Should never happen
}
+static MMIORegionPointer GetMMIOHandler(VAddr vaddr) {
+ const PageTable& page_table = Kernel::g_current_process->vm_manager.page_table;
+ return GetMMIOHandler(page_table, vaddr);
+}
+
template <typename T>
T ReadMMIO(MMIORegionPointer mmio_handler, VAddr addr);
@@ -204,18 +209,20 @@ void Write(const VAddr vaddr, const T data) {
}
}
-bool IsValidVirtualAddress(const VAddr vaddr) {
- const u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
+bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) {
+ auto& page_table = process.vm_manager.page_table;
+
+ const u8* page_pointer = page_table.pointers[vaddr >> PAGE_BITS];
if (page_pointer)
return true;
- if (current_page_table->attributes[vaddr >> PAGE_BITS] == PageType::RasterizerCachedMemory)
+ if (page_table.attributes[vaddr >> PAGE_BITS] == PageType::RasterizerCachedMemory)
return true;
- if (current_page_table->attributes[vaddr >> PAGE_BITS] != PageType::Special)
+ if (page_table.attributes[vaddr >> PAGE_BITS] != PageType::Special)
return false;
- MMIORegionPointer mmio_region = GetMMIOHandler(vaddr);
+ MMIORegionPointer mmio_region = GetMMIOHandler(page_table, vaddr);
if (mmio_region) {
return mmio_region->IsValidAddress(vaddr);
}
@@ -223,6 +230,10 @@ bool IsValidVirtualAddress(const VAddr vaddr) {
return false;
}
+bool IsValidVirtualAddress(const VAddr vaddr) {
+ return IsValidVirtualAddress(*Kernel::g_current_process, vaddr);
+}
+
bool IsValidPhysicalAddress(const PAddr paddr) {
return GetPhysicalPointer(paddr) != nullptr;
}
diff --git a/src/core/memory.h b/src/core/memory.h
index 1865bfea0..347c08c78 100644
--- a/src/core/memory.h
+++ b/src/core/memory.h
@@ -12,6 +12,10 @@
#include "common/common_types.h"
#include "core/mmio.h"
+namespace Kernel {
+class Process;
+}
+
namespace Memory {
/**
@@ -185,7 +189,10 @@ enum : VAddr {
void SetCurrentPageTable(PageTable* page_table);
PageTable* GetCurrentPageTable();
+/// Determines if the given VAddr is valid for the specified process.
+bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr);
bool IsValidVirtualAddress(const VAddr addr);
+
bool IsValidPhysicalAddress(const PAddr addr);
u8 Read8(VAddr addr);