added functions to map Heap and Shared memory space

3 files changed, 76 insertions, 9 deletions

diff --git a/src/core/mem_map.cpp b/src/core/mem_map.cpp
index 18082923..f0090206 100644
--- a/src/core/mem_map.cpp
+++ b/src/core/mem_map.cpp
@@ -16,15 +16,15 @@ u8*    g_base                   = NULL;         ///< The base pointer to the aut
 
 MemArena g_arena;                               ///< The MemArena class
 
-u8* g_heap_gsp                  = NULL;         ///< GSP heap (main memory)
 u8* g_heap                      = NULL;         ///< Application heap (main memory)
+u8* g_heap_gsp                  = NULL;         ///< GSP heap (main memory)
 u8* g_vram                      = NULL;         ///< Video memory (VRAM) pointer
 
 u8* g_physical_bootrom          = NULL;         ///< Bootrom physical memory
 u8* g_uncached_bootrom          = NULL;
 
 u8* g_physical_fcram            = NULL;         ///< Main physical memory (FCRAM)
-u8* g_physical_heap_gsp         = NULL;
+u8* g_physical_heap_gsp         = NULL;         ///< GSP heap physical memory
 u8* g_physical_vram             = NULL;         ///< Video physical memory (VRAM)
 u8* g_physical_scratchpad       = NULL;         ///< Scratchpad memory used for main thread stack
 
diff --git a/src/core/mem_map.h b/src/core/mem_map.h
index ab1eb260..5346d04e 100644
--- a/src/core/mem_map.h
+++ b/src/core/mem_map.h
@@ -22,6 +22,8 @@ enum {
     HEAP_GSP_SIZE           = 0x02000000,   ///< GSP heap size... TODO: Define correctly?
     HEAP_SIZE               = FCRAM_SIZE,   ///< Application heap size
 
+    SHARED_MEMORY_VADDR     = 0x10000000,   ///< Shared memory
+
     HEAP_PADDR              = HEAP_GSP_SIZE,
     HEAP_PADDR_END          = (HEAP_PADDR + HEAP_SIZE),
     HEAP_VADDR              = 0x08000000,
@@ -49,10 +51,11 @@ enum {
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-/// Represents a block of heap memory mapped by ControlMemory
-struct HeapBlock {
-    HeapBlock() : base_address(0), address(0), size(0), operation(0), permissions(0) {
+/// Represents a block of memory mapped by ControlMemory/MapMemoryBlock
+struct MemoryBlock {
+    MemoryBlock() : handle(0), base_address(0), address(0), size(0), operation(0), permissions(0) {
     }
+    u32 handle;
     u32 base_address;
     u32 address;
     u32 size;
@@ -99,9 +102,25 @@ void Write32(const u32 addr, const u32 data);
 u8* GetPointer(const u32 Address);
 
 /**
+ * Maps a block of memory in shared memory
+ * @param handle Handle to map memory block for
+ * @param addr Address to map memory block to
+ * @param permissions Memory map permissions
+ */
+u32 MapBlock_Shared(u32 handle, u32 addr,u32 permissions) ;
+
+/**
+ * Maps a block of memory on the heap
+ * @param size Size of block in bytes
+ * @param operation Memory map operation type
+ * @param flags Memory allocation flags
+ */
+u32 MapBlock_Heap(u32 size, u32 operation, u32 permissions);
+
+/**
  * Maps a block of memory on the GSP heap
  * @param size Size of block in bytes
- * @param operation Control memory operation
+ * @param operation Memory map operation type
  * @param permissions Control memory permissions
  */
 u32 MapBlock_HeapGSP(u32 size, u32 operation, u32 permissions);
diff --git a/src/core/mem_map_funcs.cpp b/src/core/mem_map_funcs.cpp
index af4cfacb..eff0cf4b 100644
--- a/src/core/mem_map_funcs.cpp
+++ b/src/core/mem_map_funcs.cpp
@@ -12,7 +12,9 @@
 
 namespace Memory {
 
-std::map<u32, HeapBlock> g_heap_gsp_map;
+std::map<u32, MemoryBlock> g_heap_map;
+std::map<u32, MemoryBlock> g_heap_gsp_map;
+std::map<u32, MemoryBlock> g_shared_map;
 
 /// Convert a physical address to virtual address
 u32 _AddressPhysicalToVirtual(const u32 addr) {
@@ -121,12 +123,58 @@ u8 *GetPointer(const u32 addr) {
 }
 
 /**
+ * Maps a block of memory in shared memory
+ * @param handle Handle to map memory block for
+ * @param addr Address to map memory block to
+ * @param permissions Memory map permissions
+ */
+u32 MapBlock_Shared(u32 handle, u32 addr,u32 permissions) {
+    MemoryBlock block;
+    
+    block.handle        = handle;
+    block.base_address  = addr;
+    block.permissions   = permissions;
+    
+    if (g_shared_map.size() > 0) {
+        const MemoryBlock last_block = g_shared_map.rbegin()->second;
+        block.address = last_block.address + last_block.size;
+    }
+    g_shared_map[block.GetVirtualAddress()] = block;
+
+    return block.GetVirtualAddress();
+}
+
+/**
+ * Maps a block of memory on the heap
+ * @param size Size of block in bytes
+ * @param operation Memory map operation type
+ * @param flags Memory allocation flags
+ */
+u32 MapBlock_Heap(u32 size, u32 operation, u32 permissions) {
+    MemoryBlock block;
+    
+    block.base_address  = HEAP_VADDR;
+    block.size          = size;
+    block.operation     = operation;
+    block.permissions   = permissions;
+    
+    if (g_heap_map.size() > 0) {
+        const MemoryBlock last_block = g_heap_map.rbegin()->second;
+        block.address = last_block.address + last_block.size;
+    }
+    g_heap_map[block.GetVirtualAddress()] = block;
+
+    return block.GetVirtualAddress();
+}
+
+/**
  * Maps a block of memory on the GSP heap
  * @param size Size of block in bytes
+ * @param operation Memory map operation type
  * @param flags Memory allocation flags
  */
 u32 MapBlock_HeapGSP(u32 size, u32 operation, u32 permissions) {
-    HeapBlock block;
+    MemoryBlock block;
     
     block.base_address  = HEAP_GSP_VADDR;
     block.size          = size;
@@ -134,7 +182,7 @@ u32 MapBlock_HeapGSP(u32 size, u32 operation, u32 permissions) {
     block.permissions   = permissions;
     
     if (g_heap_gsp_map.size() > 0) {
-        const HeapBlock last_block = g_heap_gsp_map.rbegin()->second;
+        const MemoryBlock last_block = g_heap_gsp_map.rbegin()->second;
         block.address = last_block.address + last_block.size;
     }
     g_heap_gsp_map[block.GetVirtualAddress()] = block;