mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-12-26 11:11:48 +01:00
b1f11ed311
~ optimized VDP renderer buffers size ~ fixed directories automatic creation + added game screenshot feature + added game screenshot support in ROM File browser + improved Controller menu icons + added new images for the new Controller menu - removed unused images
185 lines
6.6 KiB
C
185 lines
6.6 KiB
C
/***************************************************************************************
|
|
* Genesis Plus 1.2a
|
|
* FreezeState support
|
|
*
|
|
* Copyright (C) Eke-Eke, GC/Wii port
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
****************************************************************************************/
|
|
|
|
#include "shared.h"
|
|
|
|
static unsigned char state[STATE_SIZE];
|
|
|
|
#define load_param(param, size) \
|
|
memcpy(param, &state[bufferptr], size); \
|
|
bufferptr+= size;
|
|
|
|
#define save_param(param, size) \
|
|
memcpy(&state[bufferptr], param, size); \
|
|
bufferptr+= size;
|
|
|
|
void state_load(unsigned char *buffer)
|
|
{
|
|
/* buffer size */
|
|
int bufferptr = 0;
|
|
|
|
/* uncompress savestate */
|
|
unsigned long inbytes, outbytes;
|
|
memcpy(&inbytes, buffer, 4);
|
|
outbytes = STATE_SIZE;
|
|
uncompress ((Bytef *)state, &outbytes, (Bytef *)(buffer + 4), inbytes);
|
|
|
|
/* reset system */
|
|
system_reset();
|
|
m68k_memory_map[0].base = default_rom;
|
|
|
|
// GENESIS
|
|
load_param(work_ram, sizeof(work_ram));
|
|
load_param(zram, sizeof(zram));
|
|
load_param(&zbusreq, sizeof(zbusreq));
|
|
load_param(&zreset, sizeof(zreset));
|
|
load_param(&zbank, sizeof(zbank));
|
|
zbusack = 1 ^(zbusreq & zreset);
|
|
|
|
// IO
|
|
load_param(io_reg, sizeof(io_reg));
|
|
|
|
// VDP
|
|
uint8 temp_reg[0x20];
|
|
load_param(sat, sizeof(sat));
|
|
load_param(vram, sizeof(vram));
|
|
load_param(cram, sizeof(cram));
|
|
load_param(vsram, sizeof(vsram));
|
|
load_param(temp_reg, sizeof(temp_reg));
|
|
load_param(&addr, sizeof(addr));
|
|
load_param(&addr_latch, sizeof(addr_latch));
|
|
load_param(&code, sizeof(code));
|
|
load_param(&pending, sizeof(pending));
|
|
load_param(&status, sizeof(status));
|
|
load_param(&dmafill, sizeof(dmafill));
|
|
load_param(&hint_pending, sizeof(hint_pending));
|
|
load_param(&vint_pending, sizeof(vint_pending));
|
|
load_param(&irq_status, sizeof(irq_status));
|
|
vdp_restore(temp_reg);
|
|
|
|
// FM
|
|
YM2612Restore(&state[bufferptr]);
|
|
bufferptr+= YM2612GetContextSize();
|
|
|
|
// PSG
|
|
load_param(SN76489_GetContextPtr (0),SN76489_GetContextSize ());
|
|
|
|
// 68000
|
|
uint16 tmp16;
|
|
uint32 tmp32;
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D0, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D1, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D2, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D3, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D4, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D5, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D6, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_D7, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A0, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A1, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A2, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A3, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A4, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A5, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A6, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_A7, tmp32);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_PC, tmp32);
|
|
load_param(&tmp16, 2); m68k_set_reg(M68K_REG_SR, tmp16);
|
|
load_param(&tmp32, 4); m68k_set_reg(M68K_REG_USP,tmp32);
|
|
|
|
// Z80
|
|
load_param(&Z80, sizeof(Z80_Regs));
|
|
}
|
|
|
|
int state_save(unsigned char *buffer)
|
|
{
|
|
/* buffer size */
|
|
int bufferptr = 0;
|
|
|
|
// GENESIS
|
|
save_param(work_ram, sizeof(work_ram));
|
|
save_param(zram, sizeof(zram));
|
|
save_param(&zbusreq, sizeof(zbusreq));
|
|
save_param(&zreset, sizeof(zreset));
|
|
save_param(&zbank, sizeof(zbank));
|
|
|
|
// IO
|
|
save_param(io_reg, sizeof(io_reg));
|
|
|
|
// VDP
|
|
save_param(sat, sizeof(sat));
|
|
save_param(vram, sizeof(vram));
|
|
save_param(cram, sizeof(cram));
|
|
save_param(vsram, sizeof(vsram));
|
|
save_param(reg, sizeof(reg));
|
|
save_param(&addr, sizeof(addr));
|
|
save_param(&addr_latch, sizeof(addr_latch));
|
|
save_param(&code, sizeof(code));
|
|
save_param(&pending, sizeof(pending));
|
|
save_param(&status, sizeof(status));
|
|
save_param(&dmafill, sizeof(dmafill));
|
|
save_param(&hint_pending, sizeof(hint_pending));
|
|
save_param(&vint_pending, sizeof(vint_pending));
|
|
save_param(&irq_status, sizeof(irq_status));
|
|
|
|
// FM
|
|
save_param(YM2612GetContextPtr(),YM2612GetContextSize());
|
|
|
|
// PSG
|
|
save_param(SN76489_GetContextPtr (0),SN76489_GetContextSize ());
|
|
|
|
// 68000
|
|
uint16 tmp16;
|
|
uint32 tmp32;
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D0); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D1); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D2); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D3); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D4); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D5); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D6); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_D7); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A0); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A1); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A2); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A3); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A4); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A5); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A6); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_A7); save_param(&tmp32, 4);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_PC); save_param(&tmp32, 4);
|
|
tmp16 = m68k_get_reg(NULL, M68K_REG_SR); save_param(&tmp16, 2);
|
|
tmp32 = m68k_get_reg(NULL, M68K_REG_USP); save_param(&tmp32, 4);
|
|
|
|
// Z80
|
|
save_param(&Z80, sizeof(Z80_Regs));
|
|
|
|
/* compress state file */
|
|
unsigned long inbytes = bufferptr;
|
|
unsigned long outbytes = STATE_SIZE;
|
|
compress2 ((Bytef *)(buffer + 4), &outbytes, (Bytef *)state, inbytes, 9);
|
|
memcpy(buffer, &outbytes, 4);
|
|
|
|
/* return total size */
|
|
return (outbytes + 4);
|
|
}
|