mirror of
https://github.com/dborth/vbagx.git
synced 2024-11-25 20:16:53 +01:00
code cleanup/review
This commit is contained in:
dborth
parent
bca1afc555
commit
1d9678fac8
@ -552,11 +552,8 @@ void systemDrawScreen()
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extern bool gbUpdateSizes();
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bool LoadGBROM(int method)
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{
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// cleanup GB memory
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if(gbRom != NULL)
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gbCleanUp();
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gbRom = (u8 *)malloc(1024*1024*4); // allocate 4 MB to GB ROM
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bios = (u8 *)calloc(1,0x100);
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systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
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@ -618,6 +615,9 @@ bool LoadVBAROM(int method)
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srcHeight = 0;
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srcPitch = 0;
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VMClose(); // cleanup GBA memory
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gbCleanUp(); // cleanup GB memory
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switch( type )
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{
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case 2:
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@ -8,7 +8,6 @@
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* GameBoy Advance Virtual Memory Paging
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***************************************************************************/
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#ifdef HW_RVL
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@ -39,25 +38,99 @@ extern "C" {
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unsigned int MEM2Storage = 0x91000000;
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static char *gbabase = NULL;
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static u32 GBAROMSize = 0;
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/**
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* GBA Memory
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*/
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#define WORKRAM 0x40000
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#define BIOS 0x4000
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#define INTERNALRAM 0x8000
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#define PALETTERAM 0x400
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#define VRAM 0x20000
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#define OAM 0x400
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#define PIX (4 * 241 * 162)
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#define IOMEM 0x400
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#define GBATOTAL (WORKRAM + BIOS + INTERNALRAM + PALETTERAM + \
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VRAM + OAM + PIX + IOMEM )
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#ifdef USE_VM
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extern u32 loadtimeradjust;
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/** Setup VM to use small 16kb windows **/
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#define VMSHIFTBITS 14
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#define VMSHIFTMASK 0x3FFF
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#define MAXGBAROM ( 32 * 1024 * 1024 )
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#define MAXROM (4 * 1024 * 1024)
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#define MAXVMPAGE ( MAXGBAROM >> VMSHIFTBITS )
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#define MAXVMMASK ( ( MAXROM >> VMSHIFTBITS ) - 1 )
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typedef struct
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{
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char *pageptr;
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int pagetype;
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int pageno;
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}
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VMPAGE;
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static VMPAGE vmpage[MAXVMPAGE];
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static int vmpageno = 0;
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static FILE* romfile = NULL;
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static char *rombase = NULL;
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#endif
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extern void CPUUpdateRenderBuffers(bool force);
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/****************************************************************************
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* VMClose
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****************************************************************************/
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void VMClose()
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{
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if(vram != NULL)
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{
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free(vram);
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vram = NULL;
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}
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if(paletteRAM != NULL)
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{
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free(paletteRAM);
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paletteRAM = NULL;
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}
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if(internalRAM != NULL)
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{
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free(internalRAM);
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internalRAM = NULL;
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}
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if(workRAM != NULL)
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{
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free(workRAM);
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workRAM = NULL;
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}
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if(bios != NULL)
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{
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free(bios);
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bios = NULL;
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}
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if(pix != NULL)
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{
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free(pix);
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pix = NULL;
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}
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if(oam != NULL)
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{
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free(oam);
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oam = NULL;
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}
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if(ioMem != NULL)
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{
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free(ioMem);
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ioMem = NULL;
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}
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#ifdef USE_VM
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if (rombase != NULL)
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free(rombase);
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if (romfile != NULL)
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{
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fclose(romfile);
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romfile = NULL;
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}
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#endif
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}
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/****************************************************************************
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* VMAllocGBA
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*
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@ -65,35 +138,25 @@ extern void CPUUpdateRenderBuffers(bool force);
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****************************************************************************/
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static void VMAllocGBA( void )
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{
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gbabase = (char *)memalign(32, GBATOTAL);
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memset(gbabase, 0, GBATOTAL);
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workRAM = (u8 *)calloc(1, 0x40000);
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bios = (u8 *)calloc(1,0x4000);
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internalRAM = (u8 *)calloc(1,0x8000);
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paletteRAM = (u8 *)calloc(1,0x400);
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vram = (u8 *)calloc(1, 0x20000);
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oam = (u8 *)calloc(1, 0x400);
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pix = (u8 *)calloc(1, 4 * 241 * 162);
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ioMem = (u8 *)calloc(1, 0x400);
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/* Assign to internal GBA variables */
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workRAM = (u8 *)gbabase;
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bios = (u8 *)(gbabase + WORKRAM);
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internalRAM = (u8 *)(bios + BIOS);
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paletteRAM = (u8 *)(internalRAM + INTERNALRAM);
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vram = (u8 *)(paletteRAM + PALETTERAM);
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oam = (u8 *)(vram + VRAM);
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pix = (u8 *)(oam + OAM);
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ioMem = (u8 *)(pix + PIX);
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}
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/****************************************************************************
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* VMClose
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****************************************************************************/
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static void VMClose( void )
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{
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/* if ( rombase != NULL )
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free(rombase);
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*/
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if ( gbabase != NULL )
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free(gbabase);
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gbabase = NULL;
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if(workRAM == NULL || bios == NULL || internalRAM == NULL ||
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paletteRAM == NULL || vram == NULL || oam == NULL ||
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pix == NULL || ioMem == NULL)
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{
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WaitPrompt((char *)"Out of memory!");
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VMClose();
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}
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}
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#ifndef USE_VM
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/****************************************************************************
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* VMCPULoadROM
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*
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@ -134,6 +197,8 @@ bool VMCPULoadROM(int method)
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if(GBAROMSize)
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{
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flashInit();
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eepromInit();
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CPUUpdateRenderBuffers( true );
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return true;
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}
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@ -143,148 +208,8 @@ bool VMCPULoadROM(int method)
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return false;
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}
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}
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/****************************************************************************
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* VMRead32
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*
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* Return a 32bit value
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****************************************************************************/
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u32 VMRead32( u32 address )
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{
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u32 badaddress;
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if ( address >= GBAROMSize )
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{
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badaddress = ( ( ( address >> 1 ) & 0xffff ) << 16 ) | ( ( ( address + 2 ) >> 1 ) & 0xffff );
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return badaddress;
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}
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return READ32LE((rom + address));
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}
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/****************************************************************************
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* VMRead16
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*
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* Return a 16bit value
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****************************************************************************/
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u16 VMRead16( u32 address )
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{
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if ( address >= GBAROMSize )
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{
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return ( address >> 1 ) & 0xffff;
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}
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return READ16LE((rom + address));
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}
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/****************************************************************************
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* VMRead8
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*
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* Return 8bit value
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****************************************************************************/
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u8 VMRead8( u32 address )
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{
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if ( address >= GBAROMSize )
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{
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return ( address >> 1 ) & 0xff;
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}
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return (u8)rom[address];
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}
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <malloc.h>
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#include "agb/GBA.h"
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#include "Globals.h"
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#include "Util.h"
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#include "Port.h"
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#include "menudraw.h"
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#include "filesel.h"
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#include "vba.h"
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#include "fileop.h"
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extern "C" {
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#include "tbtime.h"
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}
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/** Globals **/
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extern u32 loadtimeradjust;
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#define MEM_BAD 0xff
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#define MEM_VM 0x01
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#define MEM_UN 0x80
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/** Setup VM to use small 16kb windows **/
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#define VMSHIFTBITS 14
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#define VMSHIFTMASK 0x3FFF
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#define MAXGBAROM ( 32 * 1024 * 1024 )
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#define MAXROM (4 * 1024 * 1024)
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#define MAXVMPAGE ( MAXGBAROM >> VMSHIFTBITS )
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#define MAXVMMASK ( ( MAXROM >> VMSHIFTBITS ) - 1 )
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typedef struct
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{
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char *pageptr;
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int pagetype;
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int pageno;
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}
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VMPAGE;
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static VMPAGE vmpage[MAXVMPAGE];
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static int vmpageno = 0;
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static char *rombase = NULL;
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static char *gbabase = NULL;
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static FILE* romfile = NULL;
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static int useVM = 1;
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static u32 GBAROMSize = 0;
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/**
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* GBA Memory
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*/
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#define WORKRAM 0x40000
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#define BIOS 0x4000
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#define INTERNALRAM 0x8000
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#define PALETTERAM 0x400
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#define VRAM 0x20000
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#define OAM 0x400
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#define PIX (4 * 241 * 162)
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#define IOMEM 0x400
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#define GBATOTAL (WORKRAM + BIOS + INTERNALRAM + PALETTERAM + \
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VRAM + OAM + PIX + IOMEM )
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extern void CPUUpdateRenderBuffers(bool force);
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/****************************************************************************
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* VMAllocGBA
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*
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* Allocate the memory required for GBA.
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****************************************************************************/
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static void VMAllocGBA( void )
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{
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gbabase = (char *)memalign(32, GBATOTAL);
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memset(gbabase, 0, GBATOTAL);
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/* Assign to internal GBA variables */
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workRAM = (u8 *)gbabase;
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bios = (u8 *)(gbabase + WORKRAM);
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internalRAM = (u8 *)(bios + BIOS);
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paletteRAM = (u8 *)(internalRAM + INTERNALRAM);
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vram = (u8 *)(paletteRAM + PALETTERAM);
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oam = (u8 *)(vram + VRAM);
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pix = (u8 *)(oam + OAM);
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ioMem = (u8 *)(pix + PIX);
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}
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/****************************************************************************
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* VMFindFree
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*
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@ -292,23 +217,23 @@ static void VMAllocGBA( void )
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****************************************************************************/
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static void VMFindFree( void )
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{
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int i;
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int i;
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vmpageno++;
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vmpageno &= MAXVMMASK;
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if ( vmpageno == 0 ) vmpageno++;
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vmpageno++;
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vmpageno &= MAXVMMASK;
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if ( vmpageno == 0 ) vmpageno++;
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for ( i = 1; i < MAXVMPAGE; i++ )
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{
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/** Remove any other pointer to this vmpage **/
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if ( vmpage[i].pageno == vmpageno )
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{
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vmpage[i].pageptr = NULL;
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vmpage[i].pagetype = MEM_UN;
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vmpage[i].pageno = -1;
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break;
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}
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}
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for ( i = 1; i < MAXVMPAGE; i++ )
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{
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/** Remove any other pointer to this vmpage **/
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if ( vmpage[i].pageno == vmpageno )
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{
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vmpage[i].pageptr = NULL;
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vmpage[i].pagetype = MEM_UN;
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vmpage[i].pageno = -1;
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break;
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}
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}
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}
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/****************************************************************************
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@ -318,11 +243,10 @@ static void VMFindFree( void )
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****************************************************************************/
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static void VMAllocate( int pageid )
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{
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VMFindFree();
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vmpage[pageid].pageptr = rombase + ( vmpageno << VMSHIFTBITS );
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vmpage[pageid].pagetype = MEM_VM;
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vmpage[pageid].pageno = vmpageno;
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VMFindFree();
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vmpage[pageid].pageptr = rombase + ( vmpageno << VMSHIFTBITS );
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vmpage[pageid].pagetype = MEM_VM;
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vmpage[pageid].pageno = vmpageno;
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}
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/****************************************************************************
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@ -332,41 +256,22 @@ static void VMAllocate( int pageid )
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****************************************************************************/
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static void VMInit( void )
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{
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int i;
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int i;
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/** Clear down pointers **/
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memset(&vmpage, 0, sizeof(VMPAGE) * MAXVMPAGE);
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for ( i = 0; i < MAXVMPAGE; i++ )
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{
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vmpage[i].pageno = -1;
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vmpage[i].pagetype = MEM_UN;
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}
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/** Clear down pointers **/
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memset(&vmpage, 0, sizeof(VMPAGE) * MAXVMPAGE);
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for ( i = 0; i < MAXVMPAGE; i++ )
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{
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vmpage[i].pageno = -1;
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vmpage[i].pagetype = MEM_UN;
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}
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/** Allocate physical **/
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if ( rombase == NULL )
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rombase = (char *)memalign(32, MAXROM);
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vmpageno = 0;
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rom = (u8 *)rombase;
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}
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/****************************************************************************
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* VMClose
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****************************************************************************/
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static void VMClose( void )
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{
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if ( rombase != NULL )
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free(rombase);
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if ( gbabase != NULL )
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free(gbabase);
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if ( romfile != NULL )
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fclose(romfile);
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rombase = gbabase = NULL;
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romfile = NULL;
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/** Allocate physical **/
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if ( rombase == NULL )
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rombase = (char *)memalign(32, MAXROM);
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vmpageno = 0;
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rom = (u8 *)rombase;
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}
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/****************************************************************************
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@ -424,7 +329,6 @@ int VMCPULoadROM(int method)
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// printf("ROM Size %d\n", romfile->fsize);
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/* Always use VM, regardless of ROM size */
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res = fread(rom, 1, (1 << VMSHIFTBITS), romfile);
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if ( res != (1 << VMSHIFTBITS ) )
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{
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@ -442,6 +346,8 @@ int VMCPULoadROM(int method)
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vmpage[0].pageno = 0;
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vmpage[0].pagetype = MEM_VM;
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flashInit();
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eepromInit();
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CPUUpdateRenderBuffers( true );
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return 1;
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@ -455,175 +361,165 @@ int VMCPULoadROM(int method)
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****************************************************************************/
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static void VMNewPage( int pageid )
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{
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int res;
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tb_t start,end;
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char msg[512];
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int res;
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tb_t start,end;
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char msg[512];
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mftb(&start);
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mftb(&start);
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res = fseek( romfile, pageid << VMSHIFTBITS, SEEK_SET );
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if ( ! res )
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{
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sprintf(msg, "Seek error! - Offset %08x %d\n", pageid << VMSHIFTBITS, res);
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WaitPrompt(msg);
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VMClose();
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return;
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}
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res = fseek( romfile, pageid << VMSHIFTBITS, SEEK_SET );
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if ( ! res )
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{
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sprintf(msg, "Seek error! - Offset %08x %d\n", pageid << VMSHIFTBITS, res);
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WaitPrompt(msg);
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VMClose();
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return;
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}
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VMAllocate( pageid );
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VMAllocate( pageid );
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res = fread( vmpage[pageid].pageptr, 1, 1 << VMSHIFTBITS, romfile );
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if ( res != ( 1 << VMSHIFTBITS ) )
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{
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sprintf(msg, "Error reading! %d bytes only\n", res);
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WaitPrompt(msg);
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VMClose();
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return;
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}
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res = fread( vmpage[pageid].pageptr, 1, 1 << VMSHIFTBITS, romfile );
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if ( res != ( 1 << VMSHIFTBITS ) )
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{
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sprintf(msg, "Error reading! %d bytes only\n", res);
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WaitPrompt(msg);
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VMClose();
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return;
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}
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mftb(&end);
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mftb(&end);
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loadtimeradjust += tb_diff_msec(&end, &start);
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loadtimeradjust += tb_diff_msec(&end, &start);
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||||
#if 0
|
||||
if ( pageid == 0x1FE )
|
||||
{
|
||||
vmpage[pageid].pageptr[0x209C] = 0xDF;
|
||||
vmpage[pageid].pageptr[0x209D] = 0xFA;
|
||||
vmpage[pageid].pageptr[0x209E] = 0x47;
|
||||
vmpage[pageid].pageptr[0x209F] = 0x70;
|
||||
}
|
||||
if ( pageid == 0x1FE )
|
||||
{
|
||||
vmpage[pageid].pageptr[0x209C] = 0xDF;
|
||||
vmpage[pageid].pageptr[0x209D] = 0xFA;
|
||||
vmpage[pageid].pageptr[0x209E] = 0x47;
|
||||
vmpage[pageid].pageptr[0x209F] = 0x70;
|
||||
}
|
||||
|
||||
printf("VMNP : %02x %04x %08x [%02x%02x%02x%02x] [%02x%02x%02x%02x]\n", vmpageno, pageid,
|
||||
(u32)(vmpage[pageid].pageptr - rombase), vmpage[pageid].pageptr[0], vmpage[pageid].pageptr[1],
|
||||
vmpage[pageid].pageptr[2], vmpage[pageid].pageptr[3],
|
||||
vmpage[pageid].pageptr[0xfffc], vmpage[pageid].pageptr[0xfffd],
|
||||
vmpage[pageid].pageptr[0xfffe], vmpage[pageid].pageptr[0xffff] );
|
||||
printf("VMNP : %02x %04x %08x [%02x%02x%02x%02x] [%02x%02x%02x%02x]\n", vmpageno, pageid,
|
||||
(u32)(vmpage[pageid].pageptr - rombase), vmpage[pageid].pageptr[0], vmpage[pageid].pageptr[1],
|
||||
vmpage[pageid].pageptr[2], vmpage[pageid].pageptr[3],
|
||||
vmpage[pageid].pageptr[0xfffc], vmpage[pageid].pageptr[0xfffd],
|
||||
vmpage[pageid].pageptr[0xfffe], vmpage[pageid].pageptr[0xffff] );
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* VMRead32
|
||||
*
|
||||
* Return a 32bit value
|
||||
****************************************************************************/
|
||||
* VMRead32
|
||||
*
|
||||
* Return a 32bit value
|
||||
****************************************************************************/
|
||||
u32 VMRead32( u32 address )
|
||||
{
|
||||
int pageid;
|
||||
u32 badaddress;
|
||||
char msg[512];
|
||||
//printf("VM32 : Request %08x\n", address);
|
||||
int pageid;
|
||||
u32 badaddress;
|
||||
char msg[512];
|
||||
//printf("VM32 : Request %08x\n", address);
|
||||
|
||||
if ( address >= GBAROMSize )
|
||||
{
|
||||
badaddress = ( ( ( address >> 1 ) & 0xffff ) << 16 ) | ( ( ( address + 2 ) >> 1 ) & 0xffff );
|
||||
return badaddress;
|
||||
}
|
||||
if ( address >= GBAROMSize )
|
||||
{
|
||||
badaddress = ( ( ( address >> 1 ) & 0xffff ) << 16 ) | ( ( ( address + 2 ) >> 1 ) & 0xffff );
|
||||
return badaddress;
|
||||
}
|
||||
|
||||
if ( !useVM )
|
||||
return READ32LE((rom + address));
|
||||
pageid = address >> VMSHIFTBITS;
|
||||
|
||||
/** Use VM **/
|
||||
pageid = address >> VMSHIFTBITS;
|
||||
|
||||
switch( vmpage[pageid].pagetype )
|
||||
{
|
||||
case MEM_UN:
|
||||
switch( vmpage[pageid].pagetype )
|
||||
{
|
||||
case MEM_UN:
|
||||
VMNewPage(pageid);
|
||||
|
||||
case MEM_VM:
|
||||
case MEM_VM:
|
||||
return READ32LE( vmpage[pageid].pageptr + ( address & VMSHIFTMASK ) );
|
||||
|
||||
default:
|
||||
default:
|
||||
sprintf(msg, "VM32 : Unknown page type! (%d) [%d]", vmpage[pageid].pagetype, pageid);
|
||||
WaitPrompt(msg);
|
||||
VMClose();
|
||||
return 0;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Can never get here ... but stops gcc bitchin' */
|
||||
return 0;
|
||||
/* Can never get here ... but stops gcc bitchin' */
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* VMRead16
|
||||
*
|
||||
* Return a 16bit value
|
||||
****************************************************************************/
|
||||
* VMRead16
|
||||
*
|
||||
* Return a 16bit value
|
||||
****************************************************************************/
|
||||
u16 VMRead16( u32 address )
|
||||
{
|
||||
int pageid;
|
||||
int pageid;
|
||||
|
||||
//printf("VM16 : Request %08x\n", address);
|
||||
//printf("VM16 : Request %08x\n", address);
|
||||
|
||||
if ( address >= GBAROMSize )
|
||||
{
|
||||
return ( address >> 1 ) & 0xffff;
|
||||
}
|
||||
if ( address >= GBAROMSize )
|
||||
{
|
||||
return ( address >> 1 ) & 0xffff;
|
||||
}
|
||||
|
||||
if ( !useVM )
|
||||
return READ16LE((rom + address));
|
||||
pageid = address >> VMSHIFTBITS;
|
||||
|
||||
pageid = address >> VMSHIFTBITS;
|
||||
|
||||
switch( vmpage[pageid].pagetype )
|
||||
{
|
||||
case MEM_UN:
|
||||
switch( vmpage[pageid].pagetype )
|
||||
{
|
||||
case MEM_UN:
|
||||
VMNewPage(pageid);
|
||||
|
||||
case MEM_VM:
|
||||
case MEM_VM:
|
||||
return READ16LE( vmpage[pageid].pageptr + ( address & VMSHIFTMASK ) );
|
||||
|
||||
default:
|
||||
default:
|
||||
WaitPrompt((char*) "VM16 : Unknown page type!");
|
||||
VMClose();
|
||||
return 0;
|
||||
}
|
||||
VMClose();
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Can never get here ... but stops gcc bitchin' */
|
||||
return 0;
|
||||
/* Can never get here ... but stops gcc bitchin' */
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* VMRead8
|
||||
*
|
||||
* Return 8bit value
|
||||
****************************************************************************/
|
||||
* VMRead8
|
||||
*
|
||||
* Return 8bit value
|
||||
****************************************************************************/
|
||||
u8 VMRead8( u32 address )
|
||||
{
|
||||
int pageid;
|
||||
int pageid;
|
||||
|
||||
//printf("VM8 : Request %08x\n", address);
|
||||
//printf("VM8 : Request %08x\n", address);
|
||||
|
||||
if ( address >= GBAROMSize )
|
||||
{
|
||||
return ( address >> 1 ) & 0xff;
|
||||
}
|
||||
if ( address >= GBAROMSize )
|
||||
{
|
||||
return ( address >> 1 ) & 0xff;
|
||||
}
|
||||
|
||||
if ( !useVM )
|
||||
return (u8)rom[address];
|
||||
pageid = address >> VMSHIFTBITS;
|
||||
|
||||
pageid = address >> VMSHIFTBITS;
|
||||
|
||||
switch( vmpage[pageid].pagetype )
|
||||
{
|
||||
case MEM_UN:
|
||||
switch( vmpage[pageid].pagetype )
|
||||
{
|
||||
case MEM_UN:
|
||||
VMNewPage(pageid);
|
||||
|
||||
case MEM_VM:
|
||||
return (u8)vmpage[pageid].pageptr[ (address & VMSHIFTMASK) ];
|
||||
case MEM_VM:
|
||||
return (u8)vmpage[pageid].pageptr[ (address & VMSHIFTMASK) ];
|
||||
|
||||
default:
|
||||
default:
|
||||
WaitPrompt((char*) "VM8 : Unknown page type!");
|
||||
VMClose();
|
||||
return 0;
|
||||
}
|
||||
VMClose();
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Can never get here ... but stops gcc bitchin' */
|
||||
return 0;
|
||||
/* Can never get here ... but stops gcc bitchin' */
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
|
||||
@ -12,9 +12,13 @@
|
||||
#define __VBAVMHDR__
|
||||
|
||||
bool VMCPULoadROM(int method);
|
||||
void VMClose();
|
||||
|
||||
#ifdef USE_VM
|
||||
u32 VMRead32( u32 address );
|
||||
u16 VMRead16( u32 address );
|
||||
u8 VMRead8( u32 address );
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
@ -75,8 +75,9 @@ u8 inline CPUReadByteQuick( u32 addr )
|
||||
case 9:
|
||||
case 10:
|
||||
case 12:
|
||||
#ifdef USE_VM
|
||||
return VMRead8( addr & 0x1FFFFFF );
|
||||
|
||||
#endif
|
||||
default:
|
||||
return CPUReadByteQuickDef(addr);
|
||||
}
|
||||
@ -92,7 +93,9 @@ u16 inline CPUReadHalfWordQuick( u32 addr )
|
||||
case 9:
|
||||
case 10:
|
||||
case 12:
|
||||
#ifdef USE_VM
|
||||
return VMRead16( addr & 0x1FFFFFF );
|
||||
#endif
|
||||
default:
|
||||
return CPUReadHalfWordQuickDef(addr);
|
||||
}
|
||||
@ -108,7 +111,9 @@ u32 inline CPUReadMemoryQuick( u32 addr )
|
||||
case 9:
|
||||
case 10:
|
||||
case 12:
|
||||
#ifdef USE_VM
|
||||
return VMRead32( addr & 0x1FFFFFF );
|
||||
#endif
|
||||
default:
|
||||
return CPUReadMemoryQuickDef(addr);
|
||||
}
|
||||
|
||||
@ -4026,8 +4026,7 @@ void gbCleanUp()
|
||||
}
|
||||
|
||||
if(pix != NULL) {
|
||||
// this causes system to CRASH when switching from GB to GBA and then back to GB
|
||||
//free(pix);
|
||||
free(pix);
|
||||
pix = NULL;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user