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authorSubv <subv2112@gmail.com>2017-07-22 04:17:57 +0200
committerSubv <subv2112@gmail.com>2017-09-10 22:13:41 +0200
commit6d2734a074f44a24129db850339677d8d7b436aa (patch)
tree418be08a059813466e7ed4495fd6198b16aa4ddc /src/core/memory.cpp
parentAdded missing parts in libnetwork (#2838) (diff)
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Diffstat (limited to '')
-rw-r--r--src/core/memory.cpp87
1 files changed, 12 insertions, 75 deletions
diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index 65649d9d7..ea46b6ead 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -11,75 +11,18 @@
#include "core/hle/kernel/process.h"
#include "core/memory.h"
#include "core/memory_setup.h"
-#include "core/mmio.h"
#include "video_core/renderer_base.h"
#include "video_core/video_core.h"
namespace Memory {
-enum class PageType {
- /// Page is unmapped and should cause an access error.
- Unmapped,
- /// Page is mapped to regular memory. This is the only type you can get pointers to.
- Memory,
- /// Page is mapped to regular memory, but also needs to check for rasterizer cache flushing and
- /// invalidation
- RasterizerCachedMemory,
- /// Page is mapped to a I/O region. Writing and reading to this page is handled by functions.
- Special,
- /// Page is mapped to a I/O region, but also needs to check for rasterizer cache flushing and
- /// invalidation
- RasterizerCachedSpecial,
-};
-
-struct SpecialRegion {
- VAddr base;
- u32 size;
- MMIORegionPointer handler;
-};
-
-/**
- * A (reasonably) fast way of allowing switchable and remappable process address spaces. It loosely
- * mimics the way a real CPU page table works, but instead is optimized for minimal decoding and
- * fetching requirements when accessing. In the usual case of an access to regular memory, it only
- * requires an indexed fetch and a check for NULL.
- */
-struct PageTable {
- /**
- * Array of memory pointers backing each page. An entry can only be non-null if the
- * corresponding entry in the `attributes` array is of type `Memory`.
- */
- std::array<u8*, PAGE_TABLE_NUM_ENTRIES> pointers;
-
- /**
- * Contains MMIO handlers that back memory regions whose entries in the `attribute` array is of
- * type `Special`.
- */
- std::vector<SpecialRegion> special_regions;
-
- /**
- * Array of fine grained page attributes. If it is set to any value other than `Memory`, then
- * the corresponding entry in `pointers` MUST be set to null.
- */
- std::array<PageType, PAGE_TABLE_NUM_ENTRIES> attributes;
-
- /**
- * Indicates the number of externally cached resources touching a page that should be
- * flushed before the memory is accessed
- */
- std::array<u8, PAGE_TABLE_NUM_ENTRIES> cached_res_count;
-};
-
-/// Singular page table used for the singleton process
-static PageTable main_page_table;
-/// Currently active page table
-static PageTable* current_page_table = &main_page_table;
+PageTable* current_page_table = nullptr;
std::array<u8*, PAGE_TABLE_NUM_ENTRIES>* GetCurrentPageTablePointers() {
return &current_page_table->pointers;
}
-static void MapPages(u32 base, u32 size, u8* memory, PageType type) {
+static void MapPages(PageTable& page_table, u32 base, u32 size, u8* memory, PageType type) {
LOG_DEBUG(HW_Memory, "Mapping %p onto %08X-%08X", memory, base * PAGE_SIZE,
(base + size) * PAGE_SIZE);
@@ -90,9 +33,9 @@ static void MapPages(u32 base, u32 size, u8* memory, PageType type) {
while (base != end) {
ASSERT_MSG(base < PAGE_TABLE_NUM_ENTRIES, "out of range mapping at %08X", base);
- current_page_table->attributes[base] = type;
- current_page_table->pointers[base] = memory;
- current_page_table->cached_res_count[base] = 0;
+ page_table.attributes[base] = type;
+ page_table.pointers[base] = memory;
+ page_table.cached_res_count[base] = 0;
base += 1;
if (memory != nullptr)
@@ -100,30 +43,24 @@ static void MapPages(u32 base, u32 size, u8* memory, PageType type) {
}
}
-void InitMemoryMap() {
- main_page_table.pointers.fill(nullptr);
- main_page_table.attributes.fill(PageType::Unmapped);
- main_page_table.cached_res_count.fill(0);
-}
-
-void MapMemoryRegion(VAddr base, u32 size, u8* target) {
+void MapMemoryRegion(PageTable& page_table, VAddr base, u32 size, u8* target) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: %08X", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: %08X", base);
- MapPages(base / PAGE_SIZE, size / PAGE_SIZE, target, PageType::Memory);
+ MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, target, PageType::Memory);
}
-void MapIoRegion(VAddr base, u32 size, MMIORegionPointer mmio_handler) {
+void MapIoRegion(PageTable& page_table, VAddr base, u32 size, MMIORegionPointer mmio_handler) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: %08X", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: %08X", base);
- MapPages(base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Special);
+ MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Special);
- current_page_table->special_regions.emplace_back(SpecialRegion{base, size, mmio_handler});
+ page_table.special_regions.emplace_back(SpecialRegion{base, size, mmio_handler});
}
-void UnmapRegion(VAddr base, u32 size) {
+void UnmapRegion(PageTable& page_table, VAddr base, u32 size) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: %08X", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: %08X", base);
- MapPages(base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Unmapped);
+ MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Unmapped);
}
/**