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-rw-r--r--source/memmap.cpp161
1 files changed, 135 insertions, 26 deletions
diff --git a/source/memmap.cpp b/source/memmap.cpp
index 04bc621..20110f9 100644
--- a/source/memmap.cpp
+++ b/source/memmap.cpp
@@ -113,6 +113,12 @@
#include "unzip/unzip.h"
+#ifdef DS2_DMA
+#include "ds2_cpu.h"
+#include "ds2_dma.h"
+#include "dma_adj.h"
+#endif
+
#ifdef __W32_HEAP
#include <malloc.h>
#endif
@@ -214,6 +220,7 @@ void S9xDeinterleaveType1(int TotalFileSize, uint8 * base)
blocks [i * 2] = i + nblocks;
blocks [i * 2 + 1] = i;
}
+ // DS2 DMA notes: base may or may not be 32-byte aligned
uint8 *tmp = (uint8 *) malloc (0x8000);
if (tmp)
{
@@ -223,10 +230,14 @@ void S9xDeinterleaveType1(int TotalFileSize, uint8 * base)
{
if (blocks [j] == i)
{
- memmove (tmp, &base [blocks [j] * 0x8000], 0x8000);
- memmove (&base [blocks [j] * 0x8000],
+ // memmove converted: Different mallocs [Neb]
+ memcpy (tmp, &base [blocks [j] * 0x8000], 0x8000);
+ // memmove converted: Different addresses, or identical for blocks[i] == blocks[j] [Neb]
+ // DS2 DMA notes: Don't do DMA at all if blocks[i] == blocks[j]
+ memcpy (&base [blocks [j] * 0x8000],
&base [blocks [i] * 0x8000], 0x8000);
- memmove (&base [blocks [i] * 0x8000], tmp, 0x8000);
+ // memmove converted: Different mallocs [Neb]
+ memcpy (&base [blocks [i] * 0x8000], tmp, 0x8000);
uint8 b = blocks [j];
blocks [j] = blocks [i];
blocks [i] = b;
@@ -250,13 +261,18 @@ void S9xDeinterleaveGD24(int TotalFileSize, uint8 * base)
SET_UI_COLOR(0,255,255);
}
+ // DS2 DMA notes: base may or may not be 32-byte aligned
uint8 *tmp = (uint8 *) malloc (0x80000);
if (tmp)
{
- memmove(tmp, &base[0x180000], 0x80000);
- memmove(&base[0x180000], &base[0x200000], 0x80000);
- memmove(&base[0x200000], &base[0x280000], 0x80000);
- memmove(&base[0x280000], tmp, 0x80000);
+ // memmove converted: Different mallocs [Neb]
+ memcpy(tmp, &base[0x180000], 0x80000);
+ // memmove converted: Different addresses [Neb]
+ memcpy(&base[0x180000], &base[0x200000], 0x80000);
+ // memmove converted: Different addresses [Neb]
+ memcpy(&base[0x200000], &base[0x280000], 0x80000);
+ // memmove converted: Different mallocs [Neb]
+ memcpy(&base[0x280000], tmp, 0x80000);
free ((char *) tmp);
S9xDeinterleaveType1(TotalFileSize, base);
@@ -399,14 +415,22 @@ char *CMemory::Safe (const char *s)
/**********************************************************************************************/
bool8 CMemory::Init ()
{
+ // DS2 DMA notes: These would do well to be allocated with 32 extra bytes
+ // so they can be 32-byte aligned. [Neb]
RAM = (uint8 *) malloc (0x20000);
SRAM = (uint8 *) malloc (0x20000);
VRAM = (uint8 *) malloc (0x10000);
+#ifdef DS2_DMA
+ ROM = (uint8 *) AlignedMalloc (MAX_ROM_SIZE + 0x200 + 0x8000, 32, &PtrAdj.ROM);
+#else
ROM = (uint8 *) malloc (MAX_ROM_SIZE + 0x200 + 0x8000);
+#endif
memset (RAM, 0, 0x20000);
memset (SRAM, 0, 0x20000);
memset (VRAM, 0, 0x10000);
- memset (ROM, 0, MAX_ROM_SIZE + 0x200 + 0x8000);
+ // This needs to be initialised with a ROM first anyway, so don't
+ // bother memsetting. [Neb]
+ // memset (ROM, 0, MAX_ROM_SIZE + 0x200 + 0x8000);
BSRAM = (uint8 *) malloc (0x80000);
memset (BSRAM, 0, 0x80000);
@@ -437,9 +461,9 @@ bool8 CMemory::Init ()
// Add 0x8000 to ROM image pointer to stop SuperFX code accessing
// unallocated memory (can cause crash on some ports).
- ROM += 0x8000;
+ ROM += 0x8000; // still 32-byte aligned
- C4RAM = ROM + 0x400000 + 8192 * 8;
+ C4RAM = ROM + 0x400000 + 8192 * 8; // still 32-byte aligned
::ROM = ROM;
::SRAM = SRAM;
::RegRAM = FillRAM;
@@ -453,7 +477,7 @@ bool8 CMemory::Init ()
SuperFX.nRomBanks = (2 * 1024 * 1024) / (32 * 1024);
SuperFX.pvRom = (uint8 *) ROM;
#endif
-
+
ZeroMemory (IPPU.TileCache [TILE_2BIT], MAX_2BIT_TILES * 128);
ZeroMemory (IPPU.TileCache [TILE_4BIT], MAX_4BIT_TILES * 128);
ZeroMemory (IPPU.TileCache [TILE_8BIT], MAX_8BIT_TILES * 128);
@@ -493,7 +517,11 @@ void CMemory::Deinit ()
if (ROM)
{
ROM -= 0x8000;
+#ifdef DS2_RAM
+ AlignedFree ((char *) ROM, PtrAdj.ROM);
+#else
free ((char *) ROM);
+#endif
ROM = NULL;
}
@@ -627,7 +655,21 @@ again:
((hi_score > lo_score && ScoreHiROM (TRUE) > hi_score) ||
(hi_score <= lo_score && ScoreLoROM (TRUE) > lo_score)))
{
+#ifdef DS2_DMA
+ __dcache_writeback_all();
+ {
+ unsigned int i;
+ for (i = 0; i < TotalFileSize; i += 512)
+ {
+ ds2_DMAcopy_32Byte (2 /* channel: emu internal */, Memory.ROM + i, Memory.ROM + i + 512, 512);
+ ds2_DMA_wait(2);
+ ds2_DMA_stop(2);
+ }
+ }
+#else
+ // memmove required: Overlapping addresses [Neb]
memmove (Memory.ROM, Memory.ROM + 512, TotalFileSize - 512);
+#endif
TotalFileSize -= 512;
S9xMessage (S9X_INFO, S9X_HEADER_WARNING,
"Try specifying the -nhd command line option if the game doesn't work\n");
@@ -636,7 +678,7 @@ again:
orig_lo_score = lo_score = ScoreLoROM (FALSE);
}
- CalculatedSize = (TotalFileSize / 0x2000) * 0x2000;
+ CalculatedSize = TotalFileSize & ~0x1FFF; // round down to lower 0x2000
ZeroMemory (ROM + CalculatedSize, MAX_ROM_SIZE - CalculatedSize);
if(CalculatedSize >0x400000&&
@@ -871,6 +913,7 @@ uint32 CMemory::FileLoader (uint8* buffer, const char* filename, int32 maxsize)
_makepath (fname, drive, dir, name, ext);
#ifdef __WIN32__
+ // memmove required: Overlapping addresses [Neb]
memmove (&ext [0], &ext[1], 4);
#endif
@@ -936,12 +979,27 @@ uint32 CMemory::FileLoader (uint8* buffer, const char* filename, int32 maxsize)
FileSize = fread (ptr, 1, maxsize + 0x200 - (ptr - ROM), ROMFile);
fclose (ROMFile);
- int calc_size = (FileSize / 0x2000) * 0x2000;
+ int calc_size = FileSize & ~0x1FFF; // round to the lower 0x2000
if ((FileSize - calc_size == 512 && !Settings.ForceNoHeader) ||
Settings.ForceHeader)
{
+ // memmove required: Overlapping addresses [Neb]
+ // DS2 DMA notes: Can be split into 512-byte DMA blocks [Neb]
+#ifdef DS2_DMA
+ __dcache_writeback_all();
+ {
+ unsigned int i;
+ for (i = 0; i < calc_size; i += 512)
+ {
+ ds2_DMAcopy_32Byte (2 /* channel: emu internal */, ptr + i, ptr + i + 512, 512);
+ ds2_DMA_wait(2);
+ ds2_DMA_stop(2);
+ }
+ }
+#else
memmove (ptr, ptr + 512, calc_size);
+#endif
HeaderCount++;
FileSize -= 512;
}
@@ -958,6 +1016,7 @@ uint32 CMemory::FileLoader (uint8* buffer, const char* filename, int32 maxsize)
more = TRUE;
ext [0]++;
#ifdef __WIN32__
+ // memmove required: Overlapping addresses [Neb]
memmove (&ext [1], &ext [0], 4);
ext [0] = '.';
#endif
@@ -972,6 +1031,7 @@ uint32 CMemory::FileLoader (uint8* buffer, const char* filename, int32 maxsize)
more = TRUE;
name [len - 1]++;
#ifdef __WIN32__
+ // memmove required: Overlapping addresses [Neb]
memmove (&ext [1], &ext [0], 4);
ext [0] = '.';
#endif
@@ -1180,21 +1240,48 @@ void S9xDeinterleaveType2 (bool8 reset)
blocks [i] = (i & ~0xF) | ((i & 3) << 2) |
((i & 12) >> 2);
}
-
+
+#ifdef DS2_DMA
+ unsigned int TmpAdj;
+ uint8 *tmp = (uint8 *) AlignedMalloc (0x10000, 32, &TmpAdj);
+#else
uint8 *tmp = (uint8 *) malloc (0x10000);
+#endif
if (tmp)
{
+#ifdef DS2_DMA
+ __dcache_writeback_all();
+#endif
for (i = 0; i < nblocks * 2; i++)
{
for (int j = i; j < nblocks * 2; j++)
{
if (blocks [j] == i)
{
- memmove (tmp, &Memory.ROM [blocks [j] * 0x10000], 0x10000);
- memmove (&Memory.ROM [blocks [j] * 0x10000],
+#ifdef DS2_DMA
+ ds2_DMAcopy_32Byte (2 /* channel: emu internal */, tmp, &Memory.ROM [blocks [j] * 0x10000], 0x10000);
+ ds2_DMA_wait(2);
+ ds2_DMA_stop(2);
+
+ ds2_DMAcopy_32Byte (2 /* channel: emu internal */, &Memory.ROM [blocks [j] * 0x10000],
&Memory.ROM [blocks [i] * 0x10000], 0x10000);
- memmove (&Memory.ROM [blocks [i] * 0x10000], tmp, 0x10000);
+ ds2_DMA_wait(2);
+ ds2_DMA_stop(2);
+
+ ds2_DMAcopy_32Byte (2 /* channel: emu internal */, &Memory.ROM [blocks [i] * 0x10000], tmp, 0x10000);
+ ds2_DMA_wait(2);
+ ds2_DMA_stop(2);
+#else
+ // memmove converted: Different mallocs [Neb]
+ memcpy (tmp, &Memory.ROM [blocks [j] * 0x10000], 0x10000);
+
+ // memmove converted: Different addresses, or identical if blocks[i] == blocks[j] [Neb]
+ memcpy (&Memory.ROM [blocks [j] * 0x10000],
+ &Memory.ROM [blocks [i] * 0x10000], 0x10000);
+ // memmove converted: Different mallocs [Neb]
+ memcpy (&Memory.ROM [blocks [i] * 0x10000], tmp, 0x10000);
+#endif
uint8 b = blocks [j];
blocks [j] = blocks [i];
blocks [i] = b;
@@ -1605,6 +1692,7 @@ bool8 CMemory::LoadSRAM (const char *filename)
if (len - size == 512)
{
// S-RAM file has a header - remove it
+ // memmove required: Overlapping addresses [Neb]
memmove (::SRAM, ::SRAM + 512, size);
}
if (len == size + SRTC_SRAM_PAD)
@@ -1705,7 +1793,8 @@ void CMemory::ResetSpeedMap()
void CMemory::WriteProtectROM ()
{
- memmove ((void *) WriteMap, (void *) Map, sizeof (Map));
+ // memmove converted: Different mallocs [Neb]
+ memcpy ((void *) WriteMap, (void *) Map, sizeof (Map));
for (int c = 0; c < 0x1000; c++)
{
if (BlockIsROM [c])
@@ -2543,10 +2632,24 @@ void CMemory::SuperFXROMMap ()
// Replicate the first 2Mb of the ROM at ROM + 2MB such that each 32K
// block is repeated twice in each 64K block.
+#ifdef DS2_DMA
+ __dcache_writeback_all();
+#endif
for (c = 0; c < 64; c++)
{
- memmove (&ROM [0x200000 + c * 0x10000], &ROM [c * 0x8000], 0x8000);
- memmove (&ROM [0x208000 + c * 0x10000], &ROM [c * 0x8000], 0x8000);
+#ifdef DS2_DMA
+ ds2_DMAcopy_32Byte(2 /* channel: emu internal */, &ROM [0x200000 + c * 0x10000], &ROM [c * 0x8000], 0x8000);
+ ds2_DMAcopy_32Byte(3 /* channel: emu internal 2 */, &ROM [0x208000 + c * 0x10000], &ROM [c * 0x8000], 0x8000);
+ ds2_DMA_wait(2);
+ ds2_DMA_wait(3);
+ ds2_DMA_stop(2);
+ ds2_DMA_stop(3);
+#else
+ // memmove converted: Different addresses [Neb]
+ memcpy (&ROM [0x200000 + c * 0x10000], &ROM [c * 0x8000], 0x8000);
+ // memmove converted: Different addresses [Neb]
+ memcpy (&ROM [0x208000 + c * 0x10000], &ROM [c * 0x8000], 0x8000);
+#endif
}
WriteProtectROM ();
@@ -2612,8 +2715,10 @@ void CMemory::SA1ROMMap ()
WriteProtectROM ();
// Now copy the map and correct it for the SA1 CPU.
- memmove ((void *) SA1.WriteMap, (void *) WriteMap, sizeof (WriteMap));
- memmove ((void *) SA1.Map, (void *) Map, sizeof (Map));
+ // memmove converted: Different mallocs [Neb]
+ memcpy ((void *) SA1.WriteMap, (void *) WriteMap, sizeof (WriteMap));
+ // memmove converted: Different mallocs [Neb]
+ memcpy ((void *) SA1.Map, (void *) Map, sizeof (Map));
// Banks 00->3f and 80->bf
for (c = 0; c < 0x400; c += 16)
@@ -3025,8 +3130,10 @@ void CMemory::GNextROMMap ()
WriteProtectROM ();
// Now copy the map and correct it for the SA1 CPU.
- memmove ((void *) SA1.WriteMap, (void *) WriteMap, sizeof (WriteMap));
- memmove ((void *) SA1.Map, (void *) Map, sizeof (Map));
+ // memmove converted: Different mallocs [Neb]
+ memcpy ((void *) SA1.WriteMap, (void *) WriteMap, sizeof (WriteMap));
+ // memmove converted: Different mallocs [Neb]
+ memcpy ((void *) SA1.Map, (void *) Map, sizeof (Map));
// Banks 00->3f and 80->bf
for (c = 0; c < 0x400; c += 16)
@@ -4385,9 +4492,11 @@ void CMemory::ParseSNESHeader(uint8* RomHeader)
ROMChecksum = RomHeader [0x2e] + (RomHeader [0x2f] << 8);
ROMComplementChecksum = RomHeader [0x2c] + (RomHeader [0x2d] << 8);
ROMRegion= RomHeader[0x29];
- memmove (ROMId, &RomHeader [0x2], 4);
+ // memmove converted: Different mallocs [Neb]
+ memcpy (ROMId, &RomHeader [0x2], 4);
if(RomHeader[0x2A]==0x33)
- memmove (CompanyId, &RomHeader [0], 2);
+ // memmove converted: Different mallocs [Neb]
+ memcpy (CompanyId, &RomHeader [0], 2);
else sprintf(CompanyId, "%02X", RomHeader[0x2A]);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-06 05:10:54 +0000