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added functions to map Heap and Shared memory space

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This commit is contained in:
bunnei 2014-04-24 22:32:26 -04:00
parent 66e1f8ab33
commit b7cd4c9e90
3 changed files with 76 additions and 9 deletions
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54
src/core/mem_map_funcs.cpp
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@ -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) {
@ -120,13 +122,59 @@ 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;