more various refactors to memory interface

3 files changed, 58 insertions, 48 deletions

diff --git a/src/core/mem_map.cpp b/src/core/mem_map.cpp
index 8fc8388e..44b4b07b 100644
--- a/src/core/mem_map.cpp
+++ b/src/core/mem_map.cpp
@@ -17,20 +17,23 @@ u8*    g_base                   = NULL;         ///< The base pointer to the aut
 MemArena g_arena;                               ///< The MemArena class
 
 u8* g_bootrom                   = NULL;         ///< Bootrom physical memory
-u8* g_fcram                     = NULL;         ///< Main memory (FCRAM) pointer
+u8* g_heap_gsp                  = NULL;
+u8* g_heap                      = NULL;
 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_vram             = NULL;         ///< Video physical memory (VRAM)
 u8* g_physical_scratchpad       = NULL;         ///< Scratchpad memory used for main thread stack
 
 // We don't declare the IO region in here since its handled by other means.
 static MemoryView g_views[] = {
-    { &g_vram,  &g_physical_vram,   MEM_VRAM_VADDR,     MEM_VRAM_SIZE,  0 },
-    { &g_fcram, &g_physical_fcram,  MEM_FCRAM_VADDR,    MEM_FCRAM_SIZE, MV_IS_PRIMARY_RAM },
+    {&g_vram,       &g_physical_vram,       VRAM_VADDR,     VRAM_SIZE,      0},
+    {&g_heap_gsp,   &g_physical_heap_gsp,   HEAP_GSP_VADDR, HEAP_GSP_SIZE,  0},
+    {&g_heap,       &g_physical_fcram,      HEAP_VADDR,     HEAP_SIZE,      MV_IS_PRIMARY_RAM},
 };
 
 /*static MemoryView views[] =
@@ -54,12 +57,12 @@ 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 = MEM_FCRAM_SIZE;
+            g_views[i].size = FCRAM_SIZE;
     }
 
     g_base = MemoryMap_Setup(g_views, kNumMemViews, flags, &g_arena);
 
-    NOTICE_LOG(MEMMAP, "initialized OK, RAM at %p (mirror at 0 @ %p)", g_fcram, 
+    NOTICE_LOG(MEMMAP, "initialized OK, RAM at %p (mirror at 0 @ %p)", g_heap, 
         g_physical_fcram);
 }
 
diff --git a/src/core/mem_map.h b/src/core/mem_map.h
index 82cfdece..a1fa90f3 100644
--- a/src/core/mem_map.h
+++ b/src/core/mem_map.h
@@ -12,25 +12,38 @@
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
 enum {
-    MEM_BOOTROM_SIZE        = 0x00010000,	///< Bootrom (super secret code/data @ 0x8000) size
-    MEM_MPCORE_PRIV_SIZE    = 0x00002000,	///< MPCore private memory region size
-    MEM_VRAM_SIZE           = 0x00600000,	///< VRAM size
-    MEM_DSP_SIZE            = 0x00080000,	///< DSP memory size
-    MEM_AXI_WRAM_SIZE       = 0x00080000,	///< AXI WRAM size
-    MEM_FCRAM_SIZE          = 0x08000000,	///< FCRAM size
-    MEM_SCRATCHPAD_SIZE     = 0x00004000,   ///< Typical stack size - TODO: Read from exheader
-                            
-    MEM_VRAM_MASK           = 0x007FFFFF,
-    MEM_FCRAM_MASK          = (MEM_FCRAM_SIZE - 1),	            ///< FCRAM mask
-    MEM_SCRATCHPAD_MASK     = (MEM_SCRATCHPAD_SIZE - 1),           ///< Scratchpad memory mask
-                            
-    MEM_FCRAM_PADDR         = 0x20000000,                           ///< FCRAM physical address
-    MEM_FCRAM_PADDR_END     = (MEM_FCRAM_PADDR + MEM_FCRAM_SIZE),   ///< FCRAM end of physical space
-    MEM_FCRAM_VADDR         = 0x08000000,                           ///< FCRAM virtual address
-    MEM_FCRAM_VADDR_END     = (MEM_FCRAM_VADDR + MEM_FCRAM_SIZE),   ///< FCRAM end of virtual space
-
-    MEM_VRAM_VADDR          = 0x1F000000,
-    MEM_SCRATCHPAD_VADDR    = (0x10000000 - MEM_SCRATCHPAD_SIZE),  ///< Scratchpad virtual address
+    BOOTROM_SIZE            = 0x00010000,   ///< Bootrom (super secret code/data @ 0x8000) size
+    MPCORE_PRIV_SIZE        = 0x00002000,   ///< MPCore private memory region size
+    VRAM_SIZE               = 0x00600000,   ///< VRAM size
+    DSP_SIZE                = 0x00080000,   ///< DSP memory size
+    AXI_WRAM_SIZE           = 0x00080000,   ///< AXI WRAM size
+    FCRAM_SIZE              = 0x08000000,   ///< FCRAM size
+    SCRATCHPAD_SIZE         = 0x00004000,   ///< Typical stack size - TODO: Read from exheader
+    HEAP_GSP_SIZE           = 0x02000000,   ///< GSP heap size... TODO: Define correctly?
+    HEAP_SIZE               = FCRAM_SIZE,   ///< Application heap size
+
+    HEAP_PADDR              = HEAP_GSP_SIZE,
+    HEAP_PADDR_END          = (HEAP_PADDR + HEAP_SIZE),
+    HEAP_VADDR              = 0x08000000,
+    HEAP_VADDR_END          = (HEAP_VADDR + HEAP_SIZE),
+    HEAP_GSP_VADDR          = 0x14000000,
+    HEAP_GSP_VADDR_END      = (HEAP_GSP_VADDR + HEAP_GSP_SIZE),
+    HEAP_GSP_PADDR          = 0x00000000,
+    HEAP_GSP_PADDR_END      = (HEAP_GSP_PADDR + HEAP_GSP_SIZE),
+
+    VRAM_MASK               = 0x007FFFFF,
+    FCRAM_MASK              = (FCRAM_SIZE - 1),                 ///< FCRAM mask
+    SCRATCHPAD_MASK         = (SCRATCHPAD_SIZE - 1),            ///< Scratchpad memory mask
+    HEAP_MASK               = (HEAP_SIZE - 1),
+
+    FCRAM_PADDR             = 0x20000000,                       ///< FCRAM physical address
+    FCRAM_PADDR_END         = (FCRAM_PADDR + FCRAM_SIZE),       ///< FCRAM end of physical space
+    FCRAM_VADDR             = 0x08000000,                       ///< FCRAM virtual address
+    FCRAM_VADDR_END         = (FCRAM_VADDR + FCRAM_SIZE),       ///< FCRAM end of virtual space
+
+    VRAM_VADDR              = 0x1F000000,
+    SCRATCHPAD_VADDR_END    = 0x10000000,
+    SCRATCHPAD_VADDR        = (SCRATCHPAD_VADDR_END - SCRATCHPAD_SIZE), ///< Stack space
 };
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -49,7 +62,7 @@ extern u8 *g_base;
 // These are guaranteed to point to "low memory" addresses (sub-32-bit).
 // 64-bit: Pointers to low-mem (sub-0x10000000) mirror
 // 32-bit: Same as the corresponding physical/virtual pointers.
-extern u8* g_fcram;         ///< Main memory
+extern u8* g_heap;         ///< Main memory
 extern u8* g_vram;          ///< Video memory (VRAM)
 
 void Init();
diff --git a/src/core/mem_map_funcs.cpp b/src/core/mem_map_funcs.cpp
index bb83855f..40d9dab3 100644
--- a/src/core/mem_map_funcs.cpp
+++ b/src/core/mem_map_funcs.cpp
@@ -15,8 +15,8 @@ u32 _AddressPhysicalToVirtual(const u32 addr) {
     // Our memory interface read/write functions assume virtual addresses. Put any physical address 
     // to virtual address translations here. This is obviously quite hacky... But we're not doing 
     // any MMU emulation yet or anything
-    if (((addr & 0xF0000000) == MEM_FCRAM_PADDR) && (addr < (MEM_FCRAM_PADDR_END))) {
-        return (addr & MEM_FCRAM_MASK) | MEM_FCRAM_VADDR;
+    if ((addr >= FCRAM_PADDR) && (addr < (FCRAM_PADDR_END))) {
+        return (addr & FCRAM_MASK) | FCRAM_VADDR;
     }
     return addr;
 }
@@ -40,15 +40,15 @@ inline void _Read(T &var, const u32 addr) {
     } else if ((vaddr & 0xFF000000) == 0x10000000 || (vaddr & 0xFF000000) == 0x1E000000) {
         HW::Read<T>(var, vaddr);
 
-    // FCRAM
-    } else if ((vaddr > MEM_FCRAM_VADDR)  && (vaddr < MEM_FCRAM_VADDR_END)) {
-        var = *((const T*)&g_fcram[vaddr & MEM_FCRAM_MASK]);
+    // FCRAM - application heap
+    } else if ((vaddr > HEAP_VADDR)  && (vaddr < HEAP_VADDR_END)) {
+        var = *((const T*)&g_heap[vaddr & HEAP_MASK]);
 
     /*else if ((vaddr & 0x3F800000) == 0x04000000) {
         var = *((const T*)&m_pVRAM[vaddr & VRAM_MASK]);*/
 
     } else {
-        _assert_msg_(MEMMAP, false, "unknown Read%d @ 0x%08X", sizeof(var) * 8, vaddr);
+        //_assert_msg_(MEMMAP, false, "unknown Read%d @ 0x%08X", sizeof(var) * 8, vaddr);
     }
 }
 
@@ -66,20 +66,14 @@ inline void _Write(u32 addr, const T data) {
     // 0x10XXXXXX- is physical address space, 0x1EXXXXXX is virtual address space
     } else if ((vaddr & 0xFF000000) == 0x10000000 || (vaddr & 0xFF000000) == 0x1E000000) {
         HW::Write<T>(vaddr, data);
-    
-    // ExeFS:/.code is loaded here:
-    } else if ((vaddr & 0xFFF00000) == 0x00100000) {
-        // TODO(ShizZy): This is dumb... handle correctly. From 3DBrew:
-        // http://3dbrew.org/wiki/Memory_layout#ARM11_User-land_memory_regions
-        // The ExeFS:/.code is loaded here, executables must be loaded to the 0x00100000 region when
-        // the exheader "special memory" flag is clear. The 0x03F00000-byte size restriction only 
-        // applies when this flag is clear. Executables are usually loaded to 0x14000000 when the 
-        // exheader "special memory" flag is set, however this address can be arbitrary.
-        *(T*)&g_fcram[vaddr & MEM_FCRAM_MASK] = data;
-
-    // FCRAM
-    } else if ((vaddr > MEM_FCRAM_VADDR)  && (vaddr < MEM_FCRAM_VADDR_END)) {
-        *(T*)&g_fcram[vaddr & MEM_FCRAM_MASK] = data;
+
+    // FCRAM - GSP heap
+    //} else if ((vaddr > HEAP_GSP_VADDR)  && (vaddr < HEAP_VADDR_GSP_END)) {
+    //    *(T*)&g_heap_gsp[vaddr & FCRAM_MASK] = data;
+
+    // FCRAM - application heap
+    } else if ((vaddr > HEAP_VADDR)  && (vaddr < HEAP_VADDR_END)) {
+        *(T*)&g_heap[vaddr & HEAP_MASK] = data;
 
     } else if ((vaddr & 0xFF000000) == 0x14000000) {
         _assert_msg_(MEMMAP, false, "umimplemented write to GSP heap");
@@ -104,9 +98,9 @@ inline void _Write(u32 addr, const T data) {
 u8 *GetPointer(const u32 addr) {
     const u32 vaddr = _AddressPhysicalToVirtual(addr);
 
-    // FCRAM
-    if ((vaddr > MEM_FCRAM_VADDR)  && (vaddr < MEM_FCRAM_VADDR_END)) {
-        return g_fcram + (vaddr & MEM_FCRAM_MASK);
+    // FCRAM - application heap
+    if ((vaddr > HEAP_VADDR)  && (vaddr < HEAP_VADDR_END)) {
+        return g_heap + (vaddr & HEAP_MASK);
 
     } else {
         ERROR_LOG(MEMMAP, "Unknown GetPointer @ 0x%08x", vaddr);