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authorbunnei <bunneidev@gmail.com>2014-08-31 05:27:46 +0200
committerbunnei <bunneidev@gmail.com>2014-08-31 05:27:46 +0200
commit038a51aac18df7fbb5fc58cff9811fc58aa8ee54 (patch)
tree7ecdca2c2f42e2a791b91bd1ed614ab481bc55d8 /src
parentMerge pull request #80 from bunnei/fix-latest-libctru (diff)
parentIntroduce VAddr and PAddr typedefs for ARM addresses. (diff)
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Diffstat (limited to 'src')
-rw-r--r--src/core/mem_map.h39
-rw-r--r--src/core/mem_map_funcs.cpp32
2 files changed, 40 insertions, 31 deletions
diff --git a/src/core/mem_map.h b/src/core/mem_map.h
index 3c7810573..eed445046 100644
--- a/src/core/mem_map.h
+++ b/src/core/mem_map.h
@@ -9,6 +9,11 @@
namespace Memory {
+// TODO: It would be nice to eventually replace these with strong types that prevent accidental
+// conversion between each other.
+typedef u32 VAddr; ///< Represents a pointer in the ARM11 virtual address space.
+typedef u32 PAddr; ///< Represents a pointer in the physical address space.
+
////////////////////////////////////////////////////////////////////////////////////////////////////
enum {
@@ -127,25 +132,25 @@ void Init();
void Shutdown();
template <typename T>
-inline void Read(T &var, const u32 addr);
+inline void Read(T &var, VAddr addr);
template <typename T>
-inline void Write(u32 addr, const T data);
+inline void Write(VAddr addr, T data);
-u8 Read8(const u32 addr);
-u16 Read16(const u32 addr);
-u32 Read32(const u32 addr);
+u8 Read8(VAddr addr);
+u16 Read16(VAddr addr);
+u32 Read32(VAddr addr);
-u32 Read8_ZX(const u32 addr);
-u32 Read16_ZX(const u32 addr);
+u32 Read8_ZX(VAddr addr);
+u32 Read16_ZX(VAddr addr);
-void Write8(const u32 addr, const u8 data);
-void Write16(const u32 addr, const u16 data);
-void Write32(const u32 addr, const u32 data);
+void Write8(VAddr addr, u8 data);
+void Write16(VAddr addr, u16 data);
+void Write32(VAddr addr, u32 data);
-void WriteBlock(const u32 addr, const u8* data, const int size);
+void WriteBlock(VAddr addr, const u8* data, size_t size);
-u8* GetPointer(const u32 virtual_address);
+u8* GetPointer(VAddr virtual_address);
/**
* Maps a block of memory on the heap
@@ -163,14 +168,18 @@ u32 MapBlock_Heap(u32 size, u32 operation, u32 permissions);
*/
u32 MapBlock_HeapGSP(u32 size, u32 operation, u32 permissions);
-inline const char* GetCharPointer(const u32 address) {
+inline const char* GetCharPointer(const VAddr address) {
return (const char *)GetPointer(address);
}
/// Converts a physical address to virtual address
-u32 PhysicalToVirtualAddress(const u32 addr);
+VAddr PhysicalToVirtualAddress(PAddr addr);
/// Converts a virtual address to physical address
-u32 VirtualToPhysicalAddress(const u32 addr);
+PAddr VirtualToPhysicalAddress(VAddr addr);
} // namespace
+
+// These are used often, so re-export then on the root namespace
+using Memory::VAddr;
+using Memory::PAddr;
diff --git a/src/core/mem_map_funcs.cpp b/src/core/mem_map_funcs.cpp
index ecdaa06d7..391b75fc2 100644
--- a/src/core/mem_map_funcs.cpp
+++ b/src/core/mem_map_funcs.cpp
@@ -18,7 +18,7 @@ std::map<u32, MemoryBlock> g_heap_gsp_map;
std::map<u32, MemoryBlock> g_shared_map;
/// Convert a physical address to virtual address
-u32 PhysicalToVirtualAddress(const u32 addr) {
+VAddr PhysicalToVirtualAddress(const PAddr addr) {
// Our memory interface read/write functions assume virtual addresses. Put any physical address
// to virtual address translations here. This is quite hacky, but necessary until we implement
// proper MMU emulation.
@@ -34,7 +34,7 @@ u32 PhysicalToVirtualAddress(const u32 addr) {
}
/// Convert a physical address to virtual address
-u32 VirtualToPhysicalAddress(const u32 addr) {
+PAddr VirtualToPhysicalAddress(const VAddr addr) {
// Our memory interface read/write functions assume virtual addresses. Put any physical address
// to virtual address translations here. This is quite hacky, but necessary until we implement
// proper MMU emulation.
@@ -50,7 +50,7 @@ u32 VirtualToPhysicalAddress(const u32 addr) {
}
template <typename T>
-inline void Read(T &var, const u32 vaddr) {
+inline void Read(T &var, const VAddr vaddr) {
// TODO: Figure out the fastest order of tests for both read and write (they are probably different).
// TODO: Make sure this represents the mirrors in a correct way.
// Could just do a base-relative read, too.... TODO
@@ -98,7 +98,7 @@ inline void Read(T &var, const u32 vaddr) {
}
template <typename T>
-inline void Write(u32 vaddr, const T data) {
+inline void Write(const VAddr vaddr, const T data) {
// Kernel memory command buffer
if (vaddr >= KERNEL_MEMORY_VADDR && vaddr < KERNEL_MEMORY_VADDR_END) {
@@ -146,7 +146,7 @@ inline void Write(u32 vaddr, const T data) {
}
}
-u8 *GetPointer(const u32 vaddr) {
+u8 *GetPointer(const VAddr vaddr) {
// Kernel memory command buffer
if (vaddr >= KERNEL_MEMORY_VADDR && vaddr < KERNEL_MEMORY_VADDR_END) {
return g_kernel_mem + (vaddr & KERNEL_MEMORY_MASK);
@@ -227,13 +227,13 @@ u32 MapBlock_HeapGSP(u32 size, u32 operation, u32 permissions) {
return block.GetVirtualAddress();
}
-u8 Read8(const u32 addr) {
+u8 Read8(const VAddr addr) {
u8 data = 0;
Read<u8>(data, addr);
- return (u8)data;
+ return data;
}
-u16 Read16(const u32 addr) {
+u16 Read16(const VAddr addr) {
u16_le data = 0;
Read<u16_le>(data, addr);
@@ -246,7 +246,7 @@ u16 Read16(const u32 addr) {
return (u16)data;
}
-u32 Read32(const u32 addr) {
+u32 Read32(const VAddr addr) {
u32_le data = 0;
Read<u32_le>(data, addr);
@@ -263,31 +263,31 @@ u32 Read32(const u32 addr) {
return (u32)data;
}
-u32 Read8_ZX(const u32 addr) {
+u32 Read8_ZX(const VAddr addr) {
return (u32)Read8(addr);
}
-u32 Read16_ZX(const u32 addr) {
+u32 Read16_ZX(const VAddr addr) {
return (u32)Read16(addr);
}
-void Write8(const u32 addr, const u8 data) {
+void Write8(const VAddr addr, const u8 data) {
Write<u8>(addr, data);
}
-void Write16(const u32 addr, const u16 data) {
+void Write16(const VAddr addr, const u16 data) {
Write<u16_le>(addr, data);
}
-void Write32(const u32 addr, const u32 data) {
+void Write32(const VAddr addr, const u32 data) {
Write<u32_le>(addr, data);
}
-void Write64(const u32 addr, const u64 data) {
+void Write64(const VAddr addr, const u64 data) {
Write<u64_le>(addr, data);
}
-void WriteBlock(const u32 addr, const u8* data, const int size) {
+void WriteBlock(const VAddr addr, const u8* data, const size_t size) {
int offset = 0;
while (offset < (size & ~3)) {
Write32(addr + offset, *(u32*)&data[offset]);