diff options
| -rw-r--r-- | src/common/src/common_funcs.h | 2 | ||||
| -rw-r--r-- | src/common/src/mem_arena.cpp | 10 | ||||
| -rw-r--r-- | src/common/src/mem_arena.h | 3 | ||||
| -rw-r--r-- | src/core/src/mem_map.cpp | 52 | ||||
| -rw-r--r-- | src/core/src/mem_map.h | 29 |
5 files changed, 80 insertions, 16 deletions
diff --git a/src/common/src/common_funcs.h b/src/common/src/common_funcs.h index 73320a3a..9fa44c89 100644 --- a/src/common/src/common_funcs.h +++ b/src/common/src/common_funcs.h @@ -22,6 +22,8 @@ template<> struct CompileTimeAssert<true> {}; #define b32(x) (b16(x) | (b16(x) >>16) ) #define ROUND_UP_POW2(x) (b32(x - 1) + 1) +#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) + #if defined __GNUC__ && !defined __SSSE3__ && !defined _M_GENERIC #include <emmintrin.h> static __inline __m128i __attribute__((__always_inline__)) diff --git a/src/common/src/mem_arena.cpp b/src/common/src/mem_arena.cpp index 13cd00fd..291103be 100644 --- a/src/common/src/mem_arena.cpp +++ b/src/common/src/mem_arena.cpp @@ -163,14 +163,6 @@ u8* MemArena::Find4GBBase() } -// yeah, this could also be done in like two bitwise ops... -#define SKIP(a_flags, b_flags) \ - if (!(a_flags & MV_WII_ONLY) && (b_flags & MV_WII_ONLY)) \ - continue; \ - if (!(a_flags & MV_FAKE_VMEM) && (b_flags & MV_FAKE_VMEM)) \ - continue; \ - - static bool Memory_TryBase(u8 *base, const MemoryView *views, int num_views, u32 flags, MemArena *arena) { // OK, we know where to find free space. Now grab it! // We just mimic the popular BAT setup. @@ -189,7 +181,6 @@ static bool Memory_TryBase(u8 *base, const MemoryView *views, int num_views, u32 int i; for (i = 0; i < num_views; i++) { - SKIP(flags, views[i].flags); if (views[i].flags & MV_MIRROR_PREVIOUS) { position = last_position; } else { @@ -230,7 +221,6 @@ u8 *MemoryMap_Setup(const MemoryView *views, int num_views, u32 flags, MemArena for (int i = 0; i < num_views; i++) { - SKIP(flags, views[i].flags); if ((views[i].flags & MV_MIRROR_PREVIOUS) == 0) total_mem += views[i].size; } diff --git a/src/common/src/mem_arena.h b/src/common/src/mem_arena.h index 4c3ded0d..3c14756d 100644 --- a/src/common/src/mem_arena.h +++ b/src/common/src/mem_arena.h @@ -37,8 +37,7 @@ private: enum { MV_MIRROR_PREVIOUS = 1, - MV_FAKE_VMEM = 2, - MV_WII_ONLY = 4, + MV_IS_PRIMARY_RAM = 0x100, }; struct MemoryView diff --git a/src/core/src/mem_map.cpp b/src/core/src/mem_map.cpp index 3ff516cb..e649da91 100644 --- a/src/core/src/mem_map.cpp +++ b/src/core/src/mem_map.cpp @@ -22,10 +22,41 @@ * http://code.google.com/p/gekko-gc-emu/ */ +#include "common.h" +#include "mem_arena.h" + #include "mem_map.h" +#include "core.h" + +//////////////////////////////////////////////////////////////////////////////////////////////////// namespace Memory { + +u8* g_mem_base = NULL; ///< The base pointer to the auto-mirrored arena. + +MemArena g_mem_arena; ///< The MemArena class + +u8* g_fcram = NULL; ///< Main memory (FCRAM) pointer +u8* g_vram = NULL; ///< Video memory (VRAM) pointer + +u8* g_physical_fcram = NULL; ///< Main physical memory (FCRAM) +u8* g_physical_vram = NULL; ///< Video physical memory (VRAM) + +// We don't declare the IO region in here since its handled by other means. +static MemoryView g_mem_views[] = +{ + {NULL, NULL, 0x00000000, MEM_BOOTROM_SIZE, 0}, + {NULL, NULL, 0x00010000, MEM_BOOTROM_SIZE, MV_MIRROR_PREVIOUS}, + {NULL, NULL, 0x17E00000, MEM_MPCORE_PRIV_SIZE, 0}, + {&g_vram, &g_physical_vram, 0x18000000, MEM_VRAM_SIZE, 0}, + {NULL, NULL, 0x1FF00000, MEM_DSP_SIZE, 0}, + {NULL, NULL, 0x1FF80000, MEM_AXI_WRAM_SIZE, 0}, + {&g_ram, &g_physical_fcram, 0x20000000, MEM_FCRAM_SIZE, MV_IS_PRIMARY_RAM}, +}; + +static const int kNumMemViews = sizeof(g_mem_views) / sizeof(MemoryView); ///< Number of mem views + u8 Read8(const u32 addr) { return 0xDE; } @@ -47,6 +78,27 @@ void Write16(const u32 addr, const u32 data) { void Write32(const u32 addr, const u32 data) { } +void Init() { + int flags = 0; + + for (size_t i = 0; i < ARRAY_SIZE(g_mem_views); i++) { + if (g_mem_views[i].flags & MV_IS_PRIMARY_RAM) + g_mem_views[i].size = MEMORY_SIZE; + } + g_base = MemoryMap_Setup(g_mem_views, kNumMemViews, flags, &g_mem_arena); + + INFO_LOG(MEMMAP, "Memory system initialized. RAM at %p (mirror at 0 @ %p)", g_fcram, + g_physical_fcram); +} + +void Shutdown() { + u32 flags = 0; + MemoryMap_Shutdown(g_mem_views, kNumMemViews, flags, &g_mem_arena); + g_mem_arena.ReleaseSpace(); + g_mem_base = NULL; + INFO_LOG(MEMMAP, "Memory system shut down."); +} + } // namespace diff --git a/src/core/src/mem_map.h b/src/core/src/mem_map.h index 8ef6e58a..3251fc41 100644 --- a/src/core/src/mem_map.h +++ b/src/core/src/mem_map.h @@ -32,13 +32,34 @@ //////////////////////////////////////////////////////////////////////////////////////////////////// +#define MEM_BOOTROM_SIZE 0x00010000 ///< Bootrom (super secret code/data @ 0x8000) size +#define MEM_MPCORE_PRIV_SIZE 0x00002000 ///< MPCore private memory region size +#define MEM_VRAM_SIZE 0x00600000 ///< VRAM size +#define MEM_DSP_SIZE 0x00080000 ///< DSP memory size +#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 + +//////////////////////////////////////////////////////////////////////////////////////////////////// + namespace Memory { -extern u8* g_ram; -extern u8* g_vram; +// Base is a pointer to the base of the memory map. Yes, some MMU tricks +// are used to set up a full GC or Wii memory map in process memory. on +// 32-bit, you have to mask your offsets with 0x3FFFFFFF. This means that +// some things are mirrored too many times, but eh... it works. + +// In 64-bit, this might point to "high memory" (above the 32-bit limit), +// so be sure to load it into a 64-bit register. +extern u8 *g_base; -extern u32 g_memory_size; -extern u32 g_memory_mask; +// 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_ram; ///< Main memory +extern u8* g_vram; ///< Video memory (VRAM) void Init(); void Shutdown(); |