diff options
Diffstat (limited to 'src/snapshot.c')
| -rw-r--r-- | src/snapshot.c | 945 |
1 files changed, 945 insertions, 0 deletions
diff --git a/src/snapshot.c b/src/snapshot.c new file mode 100644 index 0000000..c44610c --- /dev/null +++ b/src/snapshot.c @@ -0,0 +1,945 @@ +/*
+ * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
+ *
+ * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
+ * Jerremy Koot (jkoot@snes9x.com)
+ *
+ * Super FX C emulator code
+ * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
+ * Gary Henderson.
+ * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
+ *
+ * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
+ * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
+ * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
+ *
+ * DOS port code contains the works of other authors. See headers in
+ * individual files.
+ *
+ * Snes9x homepage: http://www.snes9x.com
+ *
+ * Permission to use, copy, modify and distribute Snes9x in both binary and
+ * source form, for non-commercial purposes, is hereby granted without fee,
+ * providing that this license information and copyright notice appear with
+ * all copies and any derived work.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event shall the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Snes9x is freeware for PERSONAL USE only. Commercial users should
+ * seek permission of the copyright holders first. Commercial use includes
+ * charging money for Snes9x or software derived from Snes9x.
+ *
+ * The copyright holders request that bug fixes and improvements to the code
+ * should be forwarded to them so everyone can benefit from the modifications
+ * in future versions.
+ *
+ * Super NES and Super Nintendo Entertainment System are trademarks of
+ * Nintendo Co., Limited and its subsidiary companies.
+ */
+
+#ifndef __GP32__
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#endif
+#if defined(__unix) || defined(__linux) || defined(__sun) || defined(__DJGPP)
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#endif
+
+#include "snapshot.h"
+//#include "snaporig.h"
+#include "memmap.h"
+#include "snes9x.h"
+#include "65c816.h"
+#include "ppu.h"
+#include "cpuexec.h"
+#include "display.h"
+#include "apu.h"
+#include "soundux.h"
+#ifdef USE_SA1
+#include "sa1.h"
+#endif
+#include "srtc.h"
+#include "sdd1.h"
+
+
+// notaz: file i/o function pointers for states,
+// changing funcs will allow to enable/disable gzipped saves
+extern int (*statef_open)(const char *fname, const char *mode);
+extern int (*statef_read)(void *p, int l);
+extern int (*statef_write)(void *p, int l);
+extern void (*statef_close)();
+
+extern uint8 *SRAM;
+
+#ifdef ZSNES_FX
+START_EXTERN_C
+void S9xSuperFXPreSaveState ();
+void S9xSuperFXPostSaveState ();
+void S9xSuperFXPostLoadState ();
+END_EXTERN_C
+#endif
+
+//bool8 S9xUnfreezeZSNES (const char *filename);
+
+typedef struct {
+ int offset;
+ int size;
+ int type;
+} FreezeData;
+
+enum {
+ INT_V, uint8_ARRAY_V, uint16_ARRAY_V, uint32_ARRAY_V
+};
+
+#define Offset(field,structure) \
+ ((int) (((char *) (&(((structure)NULL)->field))) - ((char *) NULL)))
+
+#define COUNT(ARRAY) (sizeof (ARRAY) / sizeof (ARRAY[0]))
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SCPUState *)
+
+static FreezeData SnapCPU [] = {
+ {OFFSET (Flags), 4, INT_V},
+ {OFFSET (BranchSkip), 1, INT_V},
+ {OFFSET (NMIActive), 1, INT_V},
+ {OFFSET (IRQActive), 1, INT_V},
+ {OFFSET (WaitingForInterrupt), 1, INT_V},
+ {OFFSET (WhichEvent), 1, INT_V},
+ {OFFSET (Cycles), 4, INT_V},
+ {OFFSET (NextEvent), 4, INT_V},
+ {OFFSET (V_Counter), 4, INT_V},
+ {OFFSET (MemSpeed), 4, INT_V},
+ {OFFSET (MemSpeedx2), 4, INT_V},
+ {OFFSET (FastROMSpeed), 4, INT_V}
+};
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SRegisters *)
+
+static FreezeData SnapRegisters [] = {
+ {OFFSET (PB), 1, INT_V},
+ {OFFSET (DB), 1, INT_V},
+ {OFFSET (P.W), 2, INT_V},
+ {OFFSET (A.W), 2, INT_V},
+ {OFFSET (D.W), 2, INT_V},
+ {OFFSET (S.W), 2, INT_V},
+ {OFFSET (X.W), 2, INT_V},
+ {OFFSET (Y.W), 2, INT_V},
+ {OFFSET (PC), 2, INT_V}
+};
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SPPU *)
+
+static FreezeData SnapPPU [] = {
+ {OFFSET (BGMode), 1, INT_V},
+ {OFFSET (BG3Priority), 1, INT_V},
+ {OFFSET (Brightness), 1, INT_V},
+ {OFFSET (VMA.High), 1, INT_V},
+ {OFFSET (VMA.Increment), 1, INT_V},
+ {OFFSET (VMA.Address), 2, INT_V},
+ {OFFSET (VMA.Mask1), 2, INT_V},
+ {OFFSET (VMA.FullGraphicCount), 2, INT_V},
+ {OFFSET (VMA.Shift), 2, INT_V},
+ {OFFSET (BG[0].SCBase), 2, INT_V},
+ {OFFSET (BG[0].VOffset), 2, INT_V},
+ {OFFSET (BG[0].HOffset), 2, INT_V},
+ {OFFSET (BG[0].BGSize), 1, INT_V},
+ {OFFSET (BG[0].NameBase), 2, INT_V},
+ {OFFSET (BG[0].SCSize), 2, INT_V},
+
+ {OFFSET (BG[1].SCBase), 2, INT_V},
+ {OFFSET (BG[1].VOffset), 2, INT_V},
+ {OFFSET (BG[1].HOffset), 2, INT_V},
+ {OFFSET (BG[1].BGSize), 1, INT_V},
+ {OFFSET (BG[1].NameBase), 2, INT_V},
+ {OFFSET (BG[1].SCSize), 2, INT_V},
+
+ {OFFSET (BG[2].SCBase), 2, INT_V},
+ {OFFSET (BG[2].VOffset), 2, INT_V},
+ {OFFSET (BG[2].HOffset), 2, INT_V},
+ {OFFSET (BG[2].BGSize), 1, INT_V},
+ {OFFSET (BG[2].NameBase), 2, INT_V},
+ {OFFSET (BG[2].SCSize), 2, INT_V},
+
+ {OFFSET (BG[3].SCBase), 2, INT_V},
+ {OFFSET (BG[3].VOffset), 2, INT_V},
+ {OFFSET (BG[3].HOffset), 2, INT_V},
+ {OFFSET (BG[3].BGSize), 1, INT_V},
+ {OFFSET (BG[3].NameBase), 2, INT_V},
+ {OFFSET (BG[3].SCSize), 2, INT_V},
+
+ {OFFSET (CGFLIP), 1, INT_V},
+ {OFFSET (CGDATA), 256, uint16_ARRAY_V},
+ {OFFSET (FirstSprite), 1, INT_V},
+#define O(N) \
+ {OFFSET (OBJ[N].HPos), 2, INT_V}, \
+ {OFFSET (OBJ[N].VPos), 2, INT_V}, \
+ {OFFSET (OBJ[N].Name), 2, INT_V}, \
+ {OFFSET (OBJ[N].VFlip), 1, INT_V}, \
+ {OFFSET (OBJ[N].HFlip), 1, INT_V}, \
+ {OFFSET (OBJ[N].Priority), 1, INT_V}, \
+ {OFFSET (OBJ[N].Palette), 1, INT_V}, \
+ {OFFSET (OBJ[N].Size), 1, INT_V}
+
+ O( 0), O( 1), O( 2), O( 3), O( 4), O( 5), O( 6), O( 7),
+ O( 8), O( 9), O( 10), O( 11), O( 12), O( 13), O( 14), O( 15),
+ O( 16), O( 17), O( 18), O( 19), O( 20), O( 21), O( 22), O( 23),
+ O( 24), O( 25), O( 26), O( 27), O( 28), O( 29), O( 30), O( 31),
+ O( 32), O( 33), O( 34), O( 35), O( 36), O( 37), O( 38), O( 39),
+ O( 40), O( 41), O( 42), O( 43), O( 44), O( 45), O( 46), O( 47),
+ O( 48), O( 49), O( 50), O( 51), O( 52), O( 53), O( 54), O( 55),
+ O( 56), O( 57), O( 58), O( 59), O( 60), O( 61), O( 62), O( 63),
+ O( 64), O( 65), O( 66), O( 67), O( 68), O( 69), O( 70), O( 71),
+ O( 72), O( 73), O( 74), O( 75), O( 76), O( 77), O( 78), O( 79),
+ O( 80), O( 81), O( 82), O( 83), O( 84), O( 85), O( 86), O( 87),
+ O( 88), O( 89), O( 90), O( 91), O( 92), O( 93), O( 94), O( 95),
+ O( 96), O( 97), O( 98), O( 99), O(100), O(101), O(102), O(103),
+ O(104), O(105), O(106), O(107), O(108), O(109), O(110), O(111),
+ O(112), O(113), O(114), O(115), O(116), O(117), O(118), O(119),
+ O(120), O(121), O(122), O(123), O(124), O(125), O(126), O(127),
+#undef O
+ {OFFSET (OAMPriorityRotation), 1, INT_V},
+ {OFFSET (OAMAddr), 2, INT_V},
+ {OFFSET (OAMFlip), 1, INT_V},
+ {OFFSET (OAMTileAddress), 2, INT_V},
+ {OFFSET (IRQVBeamPos), 2, INT_V},
+ {OFFSET (IRQHBeamPos), 2, INT_V},
+ {OFFSET (VBeamPosLatched), 2, INT_V},
+ {OFFSET (HBeamPosLatched), 2, INT_V},
+ {OFFSET (HBeamFlip), 1, INT_V},
+ {OFFSET (VBeamFlip), 1, INT_V},
+ {OFFSET (HVBeamCounterLatched), 1, INT_V},
+ {OFFSET (MatrixA), 2, INT_V},
+ {OFFSET (MatrixB), 2, INT_V},
+ {OFFSET (MatrixC), 2, INT_V},
+ {OFFSET (MatrixD), 2, INT_V},
+ {OFFSET (CentreX), 2, INT_V},
+ {OFFSET (CentreY), 2, INT_V},
+ {OFFSET (Joypad1ButtonReadPos), 1, INT_V},
+ {OFFSET (Joypad2ButtonReadPos), 1, INT_V},
+ {OFFSET (Joypad3ButtonReadPos), 1, INT_V},
+ {OFFSET (CGADD), 1, INT_V},
+ {OFFSET (FixedColourRed), 1, INT_V},
+ {OFFSET (FixedColourGreen), 1, INT_V},
+ {OFFSET (FixedColourBlue), 1, INT_V},
+ {OFFSET (SavedOAMAddr), 2, INT_V},
+ {OFFSET (ScreenHeight), 2, INT_V},
+ {OFFSET (WRAM), 4, INT_V},
+ {OFFSET (ForcedBlanking), 1, INT_V},
+ {OFFSET (OBJNameSelect), 2, INT_V},
+ {OFFSET (OBJSizeSelect), 1, INT_V},
+ {OFFSET (OBJNameBase), 2, INT_V},
+ {OFFSET (OAMReadFlip), 1, INT_V},
+ {OFFSET (VTimerEnabled), 1, INT_V},
+ {OFFSET (HTimerEnabled), 1, INT_V},
+ {OFFSET (HTimerPosition), 2, INT_V},
+ {OFFSET (Mosaic), 1, INT_V},
+ {OFFSET (Mode7HFlip), 1, INT_V},
+ {OFFSET (Mode7VFlip), 1, INT_V},
+ {OFFSET (Mode7Repeat), 1, INT_V},
+ {OFFSET (Window1Left), 1, INT_V},
+ {OFFSET (Window1Right), 1, INT_V},
+ {OFFSET (Window2Left), 1, INT_V},
+ {OFFSET (Window2Right), 1, INT_V},
+#define O(N) \
+ {OFFSET (ClipWindowOverlapLogic[N]), 1, INT_V}, \
+ {OFFSET (ClipWindow1Enable[N]), 1, INT_V}, \
+ {OFFSET (ClipWindow2Enable[N]), 1, INT_V}, \
+ {OFFSET (ClipWindow1Inside[N]), 1, INT_V}, \
+ {OFFSET (ClipWindow2Inside[N]), 1, INT_V}
+
+ O(0), O(1), O(2), O(3), O(4), O(5),
+
+#undef O
+
+ {OFFSET (CGFLIPRead), 1, INT_V},
+ {OFFSET (Need16x8Mulitply), 1, INT_V},
+ {OFFSET (BGMosaic), 4, uint8_ARRAY_V},
+ {OFFSET (OAMData), 512 + 32, uint8_ARRAY_V},
+ {OFFSET (Need16x8Mulitply), 1, INT_V},
+ {OFFSET (MouseSpeed), 2, uint8_ARRAY_V}
+};
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SDMA *)
+
+static FreezeData SnapDMA [] = {
+#define O(N) \
+ {OFFSET (TransferDirection) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (AAddressFixed) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (AAddressDecrement) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (TransferMode) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (ABank) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (AAddress) + N * sizeof ( SDMA), 2, INT_V}, \
+ {OFFSET (Address) + N * sizeof ( SDMA), 2, INT_V}, \
+ {OFFSET (BAddress) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (TransferBytes) + N * sizeof ( SDMA), 2, INT_V}, \
+ {OFFSET (HDMAIndirectAddressing) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (IndirectAddress) + N * sizeof ( SDMA), 2, INT_V}, \
+ {OFFSET (IndirectBank) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (Repeat) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (LineCount) + N * sizeof ( SDMA), 1, INT_V}, \
+ {OFFSET (FirstLine) + N * sizeof ( SDMA), 1, INT_V}
+
+ O(0), O(1), O(2), O(3), O(4), O(5), O(6), O(7)
+#undef O
+};
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SAPU *)
+
+static FreezeData SnapAPU [] = {
+ {OFFSET (Cycles), 4, INT_V},
+ {OFFSET (ShowROM), 1, INT_V},
+ {OFFSET (Flags), 1, INT_V},
+ {OFFSET (KeyedChannels), 1, INT_V},
+ {OFFSET (OutPorts), 4, uint8_ARRAY_V},
+ {OFFSET (DSP), 0x80, uint8_ARRAY_V},
+ {OFFSET (ExtraRAM), 64, uint8_ARRAY_V},
+ {OFFSET (Timer), 3, uint16_ARRAY_V},
+ {OFFSET (TimerTarget), 3, uint16_ARRAY_V},
+ {OFFSET (TimerEnabled), 3, uint8_ARRAY_V},
+ {OFFSET (TimerValueWritten), 3, uint8_ARRAY_V}
+};
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SAPURegisters *)
+
+static FreezeData SnapAPURegisters [] = {
+ {OFFSET (P) , 1, INT_V},
+ {OFFSET (YA.W), 2, INT_V},
+ {OFFSET (X) , 1, INT_V},
+ {OFFSET (S) , 1, INT_V},
+ {OFFSET (PC) , 2, INT_V}
+};
+
+#undef OFFSET
+#undef OFFSET1
+#define OFFSET(f) Offset(f,SSoundData *)
+
+static FreezeData SnapSoundData [] = {
+ {OFFSET (master_volume_left), 2, INT_V},
+ {OFFSET (master_volume_right), 2, INT_V},
+ {OFFSET (echo_volume_left), 2, INT_V},
+ {OFFSET (echo_volume_right), 2, INT_V},
+ {OFFSET (echo_enable), 4, INT_V},
+ {OFFSET (echo_feedback), 4, INT_V},
+ {OFFSET (echo_ptr), 4, INT_V},
+ {OFFSET (echo_buffer_size), 4, INT_V},
+ {OFFSET (echo_write_enabled), 4, INT_V},
+ {OFFSET (echo_channel_enable), 4, INT_V},
+ {OFFSET (pitch_mod), 4, INT_V},
+ {OFFSET (dummy), 3, uint32_ARRAY_V},
+#define O(N) \
+ {OFFSET (channels [N].state), 4, INT_V}, \
+ {OFFSET (channels [N].type), 4, INT_V}, \
+ {OFFSET (channels [N].volume_left), 2, INT_V}, \
+ {OFFSET (channels [N].volume_right), 2, INT_V}, \
+ {OFFSET (channels [N].hertz), 4, INT_V}, \
+ {OFFSET (channels [N].count), 4, INT_V}, \
+ {OFFSET (channels [N].loop), 1, INT_V}, \
+ {OFFSET (channels [N].envx), 4, INT_V}, \
+ {OFFSET (channels [N].left_vol_level), 2, INT_V}, \
+ {OFFSET (channels [N].right_vol_level), 2, INT_V}, \
+ {OFFSET (channels [N].envx_target), 2, INT_V}, \
+ {OFFSET (channels [N].env_error), 4, INT_V}, \
+ {OFFSET (channels [N].erate), 4, INT_V}, \
+ {OFFSET (channels [N].direction), 4, INT_V}, \
+ {OFFSET (channels [N].attack_rate), 4, INT_V}, \
+ {OFFSET (channels [N].decay_rate), 4, INT_V}, \
+ {OFFSET (channels [N].sustain_rate), 4, INT_V}, \
+ {OFFSET (channels [N].release_rate), 4, INT_V}, \
+ {OFFSET (channels [N].sustain_level), 4, INT_V}, \
+ {OFFSET (channels [N].sample), 2, INT_V}, \
+ {OFFSET (channels [N].decoded), 16, uint16_ARRAY_V}, \
+ {OFFSET (channels [N].previous16), 2, uint16_ARRAY_V}, \
+ {OFFSET (channels [N].sample_number), 2, INT_V}, \
+ {OFFSET (channels [N].last_block), 1, INT_V}, \
+ {OFFSET (channels [N].needs_decode), 1, INT_V}, \
+ {OFFSET (channels [N].block_pointer), 4, INT_V}, \
+ {OFFSET (channels [N].sample_pointer), 4, INT_V}, \
+ {OFFSET (channels [N].mode), 4, INT_V}
+
+ O(0), O(1), O(2), O(3), O(4), O(5), O(6), O(7)
+#undef O
+};
+
+#ifdef USE_SA1
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SSA1Registers *)
+
+static FreezeData SnapSA1Registers [] = {
+ {OFFSET (PB), 1, INT_V},
+ {OFFSET (DB), 1, INT_V},
+ {OFFSET (P.W), 2, INT_V},
+ {OFFSET (A.W), 2, INT_V},
+ {OFFSET (D.W), 2, INT_V},
+ {OFFSET (S.W), 2, INT_V},
+ {OFFSET (X.W), 2, INT_V},
+ {OFFSET (Y.W), 2, INT_V},
+ {OFFSET (PC), 2, INT_V}
+};
+
+#undef OFFSET
+#define OFFSET(f) Offset(f, SSA1 *)
+
+static FreezeData SnapSA1 [] = {
+ {OFFSET (Flags), 4, INT_V},
+ {OFFSET (NMIActive), 1, INT_V},
+ {OFFSET (IRQActive), 1, INT_V},
+ {OFFSET (WaitingForInterrupt), 1, INT_V},
+ {OFFSET (op1), 2, INT_V},
+ {OFFSET (op2), 2, INT_V},
+ {OFFSET (arithmetic_op), 4, INT_V},
+ {OFFSET (sum), 8, INT_V},
+ {OFFSET (overflow), 1, INT_V}
+};
+#endif
+
+//static char ROMFilename [_MAX_PATH];
+//static char SnapshotFilename [_MAX_PATH];
+
+static void Freeze ();
+static int Unfreeze ();
+void FreezeStruct (char *name, void *base, FreezeData *fields,
+ int num_fields);
+void FreezeBlock (char *name, uint8 *block, int size);
+
+int UnfreezeStruct (char *name, void *base, FreezeData *fields,
+ int num_fields);
+int UnfreezeBlock (char *name, uint8 *block, int size);
+
+bool8 Snapshot (const char *filename)
+{
+ return (S9xFreezeGame (filename));
+}
+
+bool8 S9xFreezeGame (const char *filename)
+{
+ if(statef_open(filename, "wb"))
+ {
+ Freeze();
+ statef_close();
+ return (TRUE);
+ }
+ return (FALSE);
+}
+
+
+bool8 S9xUnfreezeGame (const char *filename)
+{
+ if(statef_open(filename, "rb"))
+ {
+ int result;
+ if ((result = Unfreeze()) != SUCCESS)
+ {
+ switch (result)
+ {
+ case WRONG_FORMAT:
+ S9xMessage (S9X_ERROR, S9X_WRONG_FORMAT,
+ "File not in Snes9x freeze format");
+ S9xReset();
+ break;
+ case WRONG_VERSION:
+ S9xMessage (S9X_ERROR, S9X_WRONG_VERSION,
+ "Incompatable Snes9x freeze file format version");
+ S9xReset();
+ break;
+ default:
+ // should never happen
+ break;
+ }
+ statef_close();
+ return (FALSE);
+ }
+ statef_close();
+ return (TRUE);
+ }
+
+
+ return (FALSE);
+}
+
+static void Freeze ()
+{
+ char buffer[1024];
+ int i;
+
+ S9xSetSoundMute (TRUE);
+#ifdef ZSNES_FX
+ if (Settings.SuperFX)
+ S9xSuperFXPreSaveState ();
+#endif
+
+ S9xSRTCPreSaveState ();
+
+ for (i = 0; i < 8; i++)
+ {
+ SoundData.channels [i].previous16 [0] = (int16) SoundData.channels [i].previous [0];
+ SoundData.channels [i].previous16 [1] = (int16) SoundData.channels [i].previous [1];
+ }
+ sprintf (buffer, "%s:%04d\n", SNAPSHOT_MAGIC, SNAPSHOT_VERSION);
+ statef_write(buffer, strlen (buffer));
+ sprintf (buffer, "NAM:%06d:%s%c", strlen (Memory.ROMFilename) + 1,
+ Memory.ROMFilename, 0);
+ statef_write(buffer, strlen (buffer) + 1);
+ FreezeStruct ("CPU", &CPU, SnapCPU, COUNT (SnapCPU));
+ FreezeStruct ("REG", &Registers, SnapRegisters, COUNT (SnapRegisters));
+ FreezeStruct ("PPU", &PPU, SnapPPU, COUNT (SnapPPU));
+ FreezeStruct ("DMA", DMA, SnapDMA, COUNT (SnapDMA));
+
+// RAM and VRAM
+ FreezeBlock ("VRA", Memory.VRAM, 0x10000);
+ FreezeBlock ("RAM", Memory.RAM, 0x20000);
+ FreezeBlock ("SRA", SRAM, 0x20000);
+ FreezeBlock ("FIL", Memory.FillRAM, 0x8000);
+ if (Settings.APUEnabled)
+ {
+// APU
+ FreezeStruct ("APU", &APU, SnapAPU, COUNT (SnapAPU));
+ // copy all SPC700 regs to savestate compatible struct
+ SAPURegisters spcregs;
+ spcregs.P = IAPU.P;
+ spcregs.YA.W = IAPU.YA.W;
+ spcregs.X = IAPU.X;
+ spcregs.S = IAPU.S;
+ spcregs.PC = IAPU.PC - IAPU.RAM;
+ FreezeStruct ("ARE", &spcregs, SnapAPURegisters,
+ COUNT (SnapAPURegisters));
+
+ FreezeBlock ("ARA", IAPU.RAM, 0x10000);
+ FreezeStruct ("SOU", &SoundData, SnapSoundData,
+ COUNT (SnapSoundData));
+ }
+#ifdef USE_SA1
+ if (Settings.SA1)
+ {
+ SA1Registers.PC = SA1.PC - SA1.PCBase;
+ S9xSA1PackStatus ();
+ FreezeStruct ("SA1", &SA1, SnapSA1, COUNT (SnapSA1));
+ FreezeStruct ("SAR", &SA1Registers, SnapSA1Registers,
+ COUNT (SnapSA1Registers));
+ }
+#endif
+ S9xSetSoundMute (FALSE);
+#ifdef ZSNES_FX
+ if (Settings.SuperFX)
+ S9xSuperFXPostSaveState ();
+#endif
+}
+
+static int Unfreeze()
+{
+ // notaz: overflowing the damn Symbian stack again
+ char buffer [16];
+ char rom_filename [512];
+ int result;
+
+ int version;
+
+ unsigned int len = strlen (SNAPSHOT_MAGIC) + 1 + 4 + 1;
+ if (statef_read(buffer, len) != (int)len)
+ {
+ return (WRONG_FORMAT);
+ }
+ if (strncmp (buffer, SNAPSHOT_MAGIC, strlen (SNAPSHOT_MAGIC)) != 0)
+ {
+ return (WRONG_FORMAT);
+ }
+ if ((version = atoi (&buffer [strlen (SNAPSHOT_MAGIC) + 1])) > SNAPSHOT_VERSION)
+ return (WRONG_VERSION);
+
+ if ((result = UnfreezeBlock("NAM", (uint8 *) rom_filename, 512)) != SUCCESS)
+ return (result);
+
+ if (strcasecmp (rom_filename, Memory.ROMFilename) != 0 &&
+ strcasecmp (S9xBasename (rom_filename), S9xBasename (Memory.ROMFilename)) != 0)
+ {
+ S9xMessage (S9X_WARNING, S9X_FREEZE_ROM_NAME,
+ "Current loaded ROM image doesn't match that required by freeze-game file.");
+ }
+
+
+
+ uint32 old_flags = CPU.Flags;
+#ifdef USE_SA1
+ uint32 sa1_old_flags = SA1.Flags;
+#endif
+ S9xReset ();
+ S9xSetSoundMute (TRUE);
+
+ if ((result = UnfreezeStruct("CPU", &CPU, SnapCPU,
+ COUNT (SnapCPU))) != SUCCESS)
+ return (result);
+
+
+ FixROMSpeed ();
+ CPU.Flags |= old_flags & (DEBUG_MODE_FLAG | TRACE_FLAG |
+ SINGLE_STEP_FLAG | FRAME_ADVANCE_FLAG);
+ if ((result = UnfreezeStruct("REG", &Registers, SnapRegisters, COUNT (SnapRegisters))) != SUCCESS)
+ return (result);
+ if ((result = UnfreezeStruct("PPU", &PPU, SnapPPU, COUNT (SnapPPU))) != SUCCESS)
+ return (result);
+
+
+ IPPU.ColorsChanged = TRUE;
+ IPPU.OBJChanged = TRUE;
+ CPU.InDMA = FALSE;
+ // Restore colors from PPU
+ for (unsigned int i = 0; i < 256; i++) {
+ IPPU.Red[i] = PPU.CGDATA[i] & 0x1f;
+ IPPU.Green[i] = (PPU.CGDATA[i] >> 5) & 0x1f;
+ IPPU.Blue[i] = (PPU.CGDATA[i] >> 10) & 0x1f;
+ }
+
+ S9xFixColourBrightness ();
+ IPPU.RenderThisFrame = FALSE;
+
+ if ((result = UnfreezeStruct ("DMA", DMA, SnapDMA,
+ COUNT (SnapDMA))) != SUCCESS)
+ return (result);
+
+ if ((result = UnfreezeBlock ("VRA", Memory.VRAM, 0x10000)) != SUCCESS)
+ return (result);
+
+ if ((result = UnfreezeBlock ("RAM", Memory.RAM, 0x20000)) != SUCCESS)
+ return (result);
+
+ if ((result = UnfreezeBlock ("SRA", SRAM, 0x20000)) != SUCCESS)
+ return (result);
+
+ if ((result = UnfreezeBlock ("FIL", Memory.FillRAM, 0x8000)) != SUCCESS)
+ return (result);
+
+ // Restore graphics shadow registers
+ GFX.r212c_s = Memory.FillRAM[0x212c];
+ GFX.r212d_s = Memory.FillRAM[0x212d];
+ GFX.r212e_s = Memory.FillRAM[0x212e];
+ GFX.r212f_s = Memory.FillRAM[0x212f];
+ GFX.r2130_s = Memory.FillRAM[0x2130];
+ GFX.r2131_s = Memory.FillRAM[0x2131];
+
+ if (UnfreezeStruct ("APU", &APU, SnapAPU, COUNT (SnapAPU)) == SUCCESS)
+ {
+ SAPURegisters spcregs;
+ if ((result = UnfreezeStruct ("ARE", &spcregs, SnapAPURegisters,
+ COUNT (SnapAPURegisters))) != SUCCESS)
+ return (result);
+ // reload all SPC700 regs from savestate compatible struct
+ IAPU.P = spcregs.P;
+ IAPU.YA.W = spcregs.YA.W;
+ IAPU.X = spcregs.X;
+ IAPU.S = spcregs.S;
+ IAPU.PC = IAPU.RAM + spcregs.PC;
+
+ if ((result = UnfreezeBlock ("ARA", IAPU.RAM, 0x10000)) != SUCCESS)
+ return (result);
+
+ if ((result = UnfreezeStruct ("SOU", &SoundData, SnapSoundData,
+ COUNT (SnapSoundData))) != SUCCESS)
+ return (result);
+
+ // notaz: just to be sure
+ for(int u=0; u<8; u++) {
+ SoundData.channels[u].env_ind_attack &= 0xf;
+ SoundData.channels[u].env_ind_decay &= 0x7;
+ SoundData.channels[u].env_ind_sustain&= 0x1f;
+ }
+
+ S9xSetSoundMute (FALSE);
+ S9xAPUUnpackStatus ();
+ if (APUCheckDirectPage ())
+ IAPU.DirectPage = IAPU.RAM + 0x100;
+ else
+ IAPU.DirectPage = IAPU.RAM;
+ Settings.APUEnabled = TRUE;
+ /*IAPU.APUExecuting*/CPU.APU_APUExecuting = TRUE;
+ }
+ else
+ {
+ Settings.APUEnabled = FALSE;
+ /*IAPU.APUExecuting*/CPU.APU_APUExecuting = FALSE;
+ S9xSetSoundMute (TRUE);
+ }
+#ifdef USE_SA1
+ if ((result = UnfreezeStruct ("SA1", &SA1, SnapSA1,
+ COUNT(SnapSA1))) == SUCCESS)
+ {
+ if ((result = UnfreezeStruct ("SAR", &SA1Registers,
+ SnapSA1Registers, COUNT (SnapSA1Registers))) != SUCCESS)
+ return (result);
+
+ S9xFixSA1AfterSnapshotLoad ();
+ SA1.Flags |= sa1_old_flags & (TRACE_FLAG);
+ }
+#endif
+ S9xFixSoundAfterSnapshotLoad ();
+ ICPU.ShiftedPB = Registers.PB << 16;
+ ICPU.ShiftedDB = Registers.DB << 16;
+ S9xSetPCBase (ICPU.ShiftedPB + Registers.PC);
+
+#ifndef ASMCPU
+ S9xUnpackStatus (); // not needed
+ S9xFixCycles (); // also not needed?
+#endif
+ S9xReschedule ();
+#ifdef ZSNES_FX
+ if (Settings.SuperFX)
+ S9xSuperFXPostLoadState ();
+#endif
+
+ S9xSRTCPostLoadState ();
+ if (Settings.SDD1) S9xSDD1PostLoadState ();
+
+ return (SUCCESS);
+}
+
+int FreezeSize (int size, int type)
+{
+ switch (type)
+ {
+ case uint16_ARRAY_V:
+ return (size * 2);
+ case uint32_ARRAY_V:
+ return (size * 4);
+ default:
+ return (size);
+ }
+}
+
+void FreezeStruct(char *name, void *base, FreezeData *fields,
+ int num_fields)
+{
+ // Work out the size of the required block
+ int len = 0;
+ int i;
+ int j;
+
+ for (i = 0; i < num_fields; i++)
+ {
+ if (fields [i].offset + FreezeSize (fields [i].size,
+ fields [i].type) > len)
+ len = fields [i].offset + FreezeSize (fields [i].size,
+ fields [i].type);
+ }
+
+// uint8 *block = new uint8 [len];
+ uint8 *block = (uint8*)malloc(len);
+ uint8 *ptr = block;
+ uint16 word;
+ uint32 dword;
+ int64 qword;
+
+ // Build the block ready to be streamed out
+ for (i = 0; i < num_fields; i++)
+ {
+ switch (fields [i].type)
+ {
+ case INT_V:
+ switch (fields [i].size)
+ {
+ case 1:
+ *ptr++ = *((uint8 *) base + fields [i].offset);
+ break;
+ case 2:
+ word = *((uint16 *) ((uint8 *) base + fields [i].offset));
+ *ptr++ = (uint8) (word >> 8);
+ *ptr++ = (uint8) word;
+ break;
+ case 4:
+ dword = *((uint32 *) ((uint8 *) base + fields [i].offset));
+ *ptr++ = (uint8) (dword >> 24);
+ *ptr++ = (uint8) (dword >> 16);
+ *ptr++ = (uint8) (dword >> 8);
+ *ptr++ = (uint8) dword;
+ break;
+ case 8:
+ qword = *((int64 *) ((uint8 *) base + fields [i].offset));
+ *ptr++ = (uint8) (qword >> 56);
+ *ptr++ = (uint8) (qword >> 48);
+ *ptr++ = (uint8) (qword >> 40);
+ *ptr++ = (uint8) (qword >> 32);
+ *ptr++ = (uint8) (qword >> 24);
+ *ptr++ = (uint8) (qword >> 16);
+ *ptr++ = (uint8) (qword >> 8);
+ *ptr++ = (uint8) qword;
+ break;
+ }
+ break;
+ case uint8_ARRAY_V:
+ memmove (ptr, (uint8 *) base + fields [i].offset, fields [i].size);
+ ptr += fields [i].size;
+ break;
+ case uint16_ARRAY_V:
+ for (j = 0; j < fields [i].size; j++)
+ {
+ word = *((uint16 *) ((uint8 *) base + fields [i].offset + j * 2));
+ *ptr++ = (uint8) (word >> 8);
+ *ptr++ = (uint8) word;
+ }
+ break;
+ case uint32_ARRAY_V:
+ for (j = 0; j < fields [i].size; j++)
+ {
+ dword = *((uint32 *) ((uint8 *) base + fields [i].offset + j * 4));
+ *ptr++ = (uint8) (dword >> 24);
+ *ptr++ = (uint8) (dword >> 16);
+ *ptr++ = (uint8) (dword >> 8);
+ *ptr++ = (uint8) dword;
+ }
+ break;
+ }
+ }
+
+ FreezeBlock (name, block, len);
+
+ free(block);
+}
+
+void FreezeBlock (char *name, uint8 *block, int size)
+{
+ char buffer [512];
+ sprintf (buffer, "%s:%06d:", name, size);
+ statef_write(buffer, strlen (buffer));
+ statef_write(block, size);
+
+}
+
+int UnfreezeStruct (char *name, void *base, FreezeData *fields,
+ int num_fields)
+{
+ // Work out the size of the required block
+ int len = 0;
+ int i;
+ int j;
+
+ for (i = 0; i < num_fields; i++)
+ {
+ if (fields [i].offset + FreezeSize (fields [i].size,
+ fields [i].type) > len)
+ len = fields [i].offset + FreezeSize (fields [i].size,
+ fields [i].type);
+ }
+
+ uint8 *block = (uint8*)malloc(len);
+ uint8 *ptr = block;
+ uint16 word;
+ uint32 dword;
+ int64 qword;
+ int result;
+
+ if ((result = UnfreezeBlock (name, block, len)) != SUCCESS)
+ {
+ free(block);
+ return (result);
+ }
+
+ // Unpack the block of data into a C structure
+ for (i = 0; i < num_fields; i++)
+ {
+ switch (fields [i].type)
+ {
+ case INT_V:
+ switch (fields [i].size)
+ {
+ case 1:
+ *((uint8 *) base + fields [i].offset) = *ptr++;
+ break;
+ case 2:
+ word = *ptr++ << 8;
+ word |= *ptr++;
+ *((uint16 *) ((uint8 *) base + fields [i].offset)) = word;
+ break;
+ case 4:
+ dword = *ptr++ << 24;
+ dword |= *ptr++ << 16;
+ dword |= *ptr++ << 8;
+ dword |= *ptr++;
+ *((uint32 *) ((uint8 *) base + fields [i].offset)) = dword;
+ break;
+ case 8:
+ qword = (int64) *ptr++ << 56;
+ qword |= (int64) *ptr++ << 48;
+ qword |= (int64) *ptr++ << 40;
+ qword |= (int64) *ptr++ << 32;
+ qword |= (int64) *ptr++ << 24;
+ qword |= (int64) *ptr++ << 16;
+ qword |= (int64) *ptr++ << 8;
+ qword |= (int64) *ptr++;
+ *((int64 *) ((uint8 *) base + fields [i].offset)) = qword;
+ break;
+ }
+ break;
+ case uint8_ARRAY_V:
+ memmove ((uint8 *) base + fields [i].offset, ptr, fields [i].size);
+ ptr += fields [i].size;
+ break;
+ case uint16_ARRAY_V:
+ for (j = 0; j < fields [i].size; j++)
+ {
+ word = *ptr++ << 8;
+ word |= *ptr++;
+ *((uint16 *) ((uint8 *) base + fields [i].offset + j * 2)) = word;
+ }
+ break;
+ case uint32_ARRAY_V:
+ for (j = 0; j < fields [i].size; j++)
+ {
+ dword = *ptr++ << 24;
+ dword |= *ptr++ << 16;
+ dword |= *ptr++ << 8;
+ dword |= *ptr++;
+ *((uint32 *) ((uint8 *) base + fields [i].offset + j * 4)) = dword;
+ }
+ break;
+ }
+ }
+
+// delete block;
+ free(block);
+ return (result);
+}
+
+int UnfreezeBlock(char *name, uint8 *block, int size)
+{
+ char buffer [20];
+ int len = 0;
+ int rem = 0;
+
+ if (statef_read(buffer, 11) != 11 ||
+ strncmp (buffer, name, 3) != 0 || buffer [3] != ':' ||
+ (len = atoi (&buffer [4])) == 0)
+ {
+ return (WRONG_FORMAT);
+ }
+
+ if (len > size)
+ {
+ rem = len - size;
+ len = size;
+ }
+
+ if (statef_read(block, len) != len)
+ {
+ return (WRONG_FORMAT);
+ }
+
+ if (rem)
+ {
+ char *junk = (char*)malloc(rem);
+ statef_read(junk, rem);
+ free(junk);
+ }
+
+ return (SUCCESS);
+}
+
+
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