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-rw-r--r--src/core/core.vcxproj1
-rw-r--r--src/core/core.vcxproj.filters1
-rw-r--r--src/core/src/mem_map.cpp2
-rw-r--r--src/core/src/mem_map.h3
-rw-r--r--src/core/src/mem_map_funcs.cpp157
5 files changed, 161 insertions, 3 deletions
diff --git a/src/core/core.vcxproj b/src/core/core.vcxproj
index 147cfc66d..081f4a489 100644
--- a/src/core/core.vcxproj
+++ b/src/core/core.vcxproj
@@ -138,6 +138,7 @@
<ClCompile Include="src\arm\disassembler\arm_disasm.cpp" />
<ClCompile Include="src\core.cpp" />
<ClCompile Include="src\mem_map.cpp" />
+ <ClCompile Include="src\mem_map_funcs.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="src\arm\armcpu.h" />
diff --git a/src/core/core.vcxproj.filters b/src/core/core.vcxproj.filters
index b262708fc..cf374ee88 100644
--- a/src/core/core.vcxproj.filters
+++ b/src/core/core.vcxproj.filters
@@ -12,6 +12,7 @@
<ClCompile Include="src\arm\armemu.cpp">
<Filter>arm</Filter>
</ClCompile>
+ <ClCompile Include="src\mem_map_funcs.cpp" />
</ItemGroup>
<ItemGroup>
<Filter Include="arm">
diff --git a/src/core/src/mem_map.cpp b/src/core/src/mem_map.cpp
index 0d3c6ca12..7bab1d4bd 100644
--- a/src/core/src/mem_map.cpp
+++ b/src/core/src/mem_map.cpp
@@ -101,7 +101,7 @@ void Init() {
for (size_t i = 0; i < ARRAY_SIZE(g_views); i++) {
if (g_views[i].flags & MV_IS_PRIMARY_RAM)
- g_views[i].size = MEMORY_SIZE;
+ g_views[i].size = MEM_FCRAM_SIZE;
}
INFO_LOG(MEMMAP, "Memory system initialized. RAM at %p (mirror at 0 @ %p)", g_fcram,
diff --git a/src/core/src/mem_map.h b/src/core/src/mem_map.h
index a6370f766..08380ab3a 100644
--- a/src/core/src/mem_map.h
+++ b/src/core/src/mem_map.h
@@ -39,8 +39,7 @@
#define MEM_AXI_WRAM_SIZE 0x00080000 ///< AXI WRAM size
#define MEM_FCRAM_SIZE 0x08000000 ///< FCRAM size
-#define MEMORY_SIZE MEM_FCRAM_SIZE
-#define MEMORY_MASK (MEM_FCRAM_SIZE - 1) ///< Main memory mask
+#define MEM_FCRAM_MASK (MEM_FCRAM_SIZE - 1) ///< FCRAm mask
////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/src/core/src/mem_map_funcs.cpp b/src/core/src/mem_map_funcs.cpp
new file mode 100644
index 000000000..ed367e01f
--- /dev/null
+++ b/src/core/src/mem_map_funcs.cpp
@@ -0,0 +1,157 @@
+/**
+ * Copyright (C) 2013 Citrus Emulator
+ *
+ * @file mem_map_funcs.cpp
+ * @author ShizZy <shizzy247@gmail.com>
+ * @date 2013-09-18
+ * @brief Memory map R/W functions
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#include "common.h"
+
+#include "mem_map.h"
+
+namespace Memory {
+
+/*
+u8 *GetPointer(const u32 address)
+{
+ if ((address & 0x3E000000) == 0x08000000) {
+ return g_fcram + (address & MEM_FCRAM_MASK);
+ }
+ else if ((address & 0x3F800000) == 0x04000000) {
+ return m_pVRAM + (address & VRAM_MASK);
+ }
+ else if ((address & 0x3F000000) >= 0x08000000 && (address & 0x3F000000) < 0x08000000 + g_MemorySize) {
+ return m_pRAM + (address & g_MemoryMask);
+ }
+ else {
+ ERROR_LOG(MEMMAP, "Unknown GetPointer %08x PC %08x LR %08x", address, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]);
+ static bool reported = false;
+ if (!reported) {
+ Reporting::ReportMessage("Unknown GetPointer %08x PC %08x LR %08x", address, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]);
+ reported = true;
+ }
+ if (!g_Config.bIgnoreBadMemAccess) {
+ Core_EnableStepping(true);
+ host->SetDebugMode(true);
+ }
+ return 0;
+ }
+}*/
+
+template <typename T>
+inline void ReadFromHardware(T &var, const u32 address)
+{
+ // 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
+
+ if ((address & 0x3E000000) == 0x08000000) {
+ var = *((const T*)&g_fcram[address & MEM_FCRAM_MASK]);
+ }
+ /*else if ((address & 0x3F800000) == 0x04000000) {
+ var = *((const T*)&m_pVRAM[address & VRAM_MASK]);
+ }*/
+ else {
+ _assert_msg_(MEMMAP, false, "unknown hardware read");
+ // WARN_LOG(MEMMAP, "ReadFromHardware: Invalid address %08x PC %08x LR %08x", address, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]);
+ }
+}
+
+template <typename T>
+inline void WriteToHardware(u32 address, const T data)
+{
+ // Could just do a base-relative write, too.... TODO
+
+ if ((address & 0x3E000000) == 0x08000000) {
+ *(T*)&g_fcram[address & MEM_FCRAM_MASK] = data;
+ }
+ /*else if ((address & 0x3F800000) == 0x04000000) {
+ *(T*)&m_pVRAM[address & VRAM_MASK] = data;
+ }*/
+ else {
+ _assert_msg_(MEMMAP, false, "unknown hardware write");
+ // WARN_LOG(MEMMAP, "WriteToHardware: Invalid address %08x PC %08x LR %08x", address, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]);
+ }
+}
+
+bool IsValidAddress(const u32 address) {
+ if ((address & 0x3E000000) == 0x08000000) {
+ return true;
+ } else if ((address & 0x3F800000) == 0x04000000) {
+ return true;
+ } else if ((address & 0xBFFF0000) == 0x00010000) {
+ return true;
+ } else if ((address & 0x3F000000) >= 0x08000000 && (address & 0x3F000000) < 0x08000000 + MEM_FCRAM_MASK) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+u8 Read_U8(const u32 _Address) {
+ u8 _var = 0;
+ ReadFromHardware<u8>(_var, _Address);
+ return (u8)_var;
+}
+
+u16 Read_U16(const u32 _Address) {
+ u16_le _var = 0;
+ ReadFromHardware<u16_le>(_var, _Address);
+ return (u16)_var;
+}
+
+u32 Read_U32(const u32 _Address) {
+ u32_le _var = 0;
+ ReadFromHardware<u32_le>(_var, _Address);
+ return _var;
+}
+
+u64 Read_U64(const u32 _Address) {
+ u64_le _var = 0;
+ ReadFromHardware<u64_le>(_var, _Address);
+ return _var;
+}
+
+u32 Read_U8_ZX(const u32 _Address) {
+ return (u32)Read_U8(_Address);
+}
+
+u32 Read_U16_ZX(const u32 _Address) {
+ return (u32)Read_U16(_Address);
+}
+
+void Write_U8(const u8 _Data, const u32 _Address) {
+ WriteToHardware<u8>(_Address, _Data);
+}
+
+void Write_U16(const u16 _Data, const u32 _Address) {
+ WriteToHardware<u16_le>(_Address, _Data);
+}
+
+void Write_U32(const u32 _Data, const u32 _Address) {
+ WriteToHardware<u32_le>(_Address, _Data);
+}
+
+void Write_U64(const u64 _Data, const u32 _Address) {
+ WriteToHardware<u64_le>(_Address, _Data);
+}
+
+} // namespace
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