From 524fd9143a9de82d9a6ef62403ee9a92015021e3 Mon Sep 17 00:00:00 2001
From: James Benton <james.benton2@gmail.com>
Date: Tue, 29 May 2018 13:55:10 +0100
Subject: [PATCH] coreinit: Add virtual memory mapping functions.

---
 cafe/coreinit/exports.def    | 12 ++++++-
 include/coreinit/memory.h    |  3 --
 include/coreinit/memorymap.h | 65 ++++++++++++++++++++++++++++++++++++
 3 files changed, 76 insertions(+), 4 deletions(-)
 create mode 100644 include/coreinit/memorymap.h

diff --git a/cafe/coreinit/exports.def b/cafe/coreinit/exports.def
index e040e27..df52acc 100644
--- a/cafe/coreinit/exports.def
+++ b/cafe/coreinit/exports.def
@@ -264,10 +264,20 @@ MEMGetNthListObject
 // coreinit/memory.h
 OSBlockMove
 OSBlockSet
-OSEffectiveToPhysical
 OSAllocFromSystem
 OSFreeToSystem
 
+// coreinit/memorymap.h
+OSEffectiveToPhysical
+OSAllocVirtAddr
+OSFreeVirtAddr
+OSQueryVirtAddr
+OSMapMemory
+OSUnmapMemory
+OSGetMapVirtAddrRange
+OSGetAvailPhysAddrRange
+OSGetDataPhysAddrRange
+
 // coreinit/messagequeue.h
 OSInitMessageQueue
 OSInitMessageQueueEx
diff --git a/include/coreinit/memory.h b/include/coreinit/memory.h
index 3efc92c..76c1f4f 100644
--- a/include/coreinit/memory.h
+++ b/include/coreinit/memory.h
@@ -23,9 +23,6 @@ OSBlockSet(void *dst,
            uint8_t val,
            uint32_t size);
 
-uint32_t
-OSEffectiveToPhysical(void *vaddr);
-
 void*
 OSAllocFromSystem(uint32_t size,
                   int align);
diff --git a/include/coreinit/memorymap.h b/include/coreinit/memorymap.h
new file mode 100644
index 0000000..fb38fb4
--- /dev/null
+++ b/include/coreinit/memorymap.h
@@ -0,0 +1,65 @@
+#pragma once
+#include <wut.h>
+
+/**
+ * \defgroup coreinit_memorymap Memory Map
+ * \ingroup coreinit
+ *
+ * @{
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum OSMemoryMapMode
+{
+   OS_MAP_MEMORY_INVALID      = 0,
+   OS_MAP_MEMORY_READ_ONLY    = 1,
+   OS_MAP_MEMORY_READ_WRITE   = 2,
+   OS_MAP_MEMORY_FREE         = 3,
+   OS_MAP_MEMORY_ALLOCATED    = 4,
+} OSMemoryMapMode;
+
+#define OS_PAGE_SIZE (128 * 1024)
+
+uint32_t
+OSEffectiveToPhysical(uint32_t virtualAddress);
+
+uint32_t
+OSAllocVirtAddr(uint32_t virtualAddress,
+                uint32_t size,
+                uint32_t align);
+
+BOOL
+OSFreeVirtAddr(uint32_t virtualAddress,
+               uint32_t size);
+
+OSMemoryMapMode
+OSQueryVirtAddr(uint32_t virtualAddress);
+
+BOOL
+OSMapMemory(uint32_t virtualAddress,
+            uint32_t physicalAddress,
+            uint32_t size,
+            OSMemoryMapMode mode);
+
+BOOL
+OSUnmapMemory(uint32_t virtualAddress,
+              uint32_t size);
+
+void
+OSGetMapVirtAddrRange(uint32_t *outVirtualAddress,
+                      uint32_t *outSize);
+
+void
+OSGetAvailPhysAddrRange(uint32_t *outPhysicalAddress,
+                        uint32_t *outSize);
+
+void
+OSGetDataPhysAddrRange(uint32_t *outPhysicalAddress,
+                       uint32_t *outSize);
+
+#ifdef __cplusplus
+}
+#endif