X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmemory.cpp;h=7ebdb2fc6e4ef99317c2e5be98c41acc08eaccf4;hb=725caa0f8bb826a73edef366906ccb41a3197819;hp=8c4007f318716c26390d4625f3afdbcd53a34c6b;hpb=86bd0f2592c3cd674239532247276bd2d579a857;p=virtualjaguar diff --git a/src/memory.cpp b/src/memory.cpp index 8c4007f..7ebdb2f 100644 --- a/src/memory.cpp +++ b/src/memory.cpp @@ -1,184 +1,266 @@ -////////////////////////////////////////////////////////////////////////////// // -////////////////////////////////////////////////////////////////////////////// +// Jaguar memory and I/O physical (hosted!) memory // +// by James Hammons // +// JLH = James Hammons // +// WHO WHEN WHAT +// --- ---------- ----------------------------------------------------------- +// JLH 12/10/2009 Repurposed this file. :-) // -// -// -////////////////////////////////////////////////////////////////////////////// -#include "include/memory.h" +/* +$FFFFFF => 16,777,215 +$A00000 => 10,485,760 -typedef struct sMemBlockInfo -{ - void *ptr; - char *info; - UINT32 size; - struct sMemBlockInfo *next; - struct sMemBlockInfo *prev; -} sMemBlockInfo; - -sMemBlockInfo memoryInfo; -UINT32 memoryMaxAllocated; -UINT32 currentAllocatedMemory; -UINT32 maximumAllocatedMemory; - -////////////////////////////////////////////////////////////////////////////// -// -////////////////////////////////////////////////////////////////////////////// -// -// -// -// -// -// -////////////////////////////////////////////////////////////////////////////// -void memory_addMemInfo(void *ptr, UINT32 size, char *info) -{ - sMemBlockInfo *alias; - - alias=&memoryInfo; - while (alias->next) alias=alias->next; - alias->next=(sMemBlockInfo*)malloc(sizeof(sMemBlockInfo)); - if (alias->next==NULL) - { - exit(0); - return; - } - alias->next->prev=alias; - alias=alias->next; - alias->next=NULL; - alias->size=size; - alias->ptr=ptr; - alias->info=info; -} -////////////////////////////////////////////////////////////////////////////// -// -////////////////////////////////////////////////////////////////////////////// -// -// -// -// -// -// -////////////////////////////////////////////////////////////////////////////// -void memory_init(void) -{ - memoryInfo.next=NULL; - memoryInfo.prev=NULL; - currentAllocatedMemory=0; - maximumAllocatedMemory=0; -} -////////////////////////////////////////////////////////////////////////////// -// -////////////////////////////////////////////////////////////////////////////// -// -// -// -// -// -// -////////////////////////////////////////////////////////////////////////////// -void *memory_malloc(UINT32 size, char *info) -{ - void *ptr; - - ptr=(void*)malloc(size); - if (ptr==NULL) - { - return(NULL); - } - memory_addMemInfo(ptr,size,info); - currentAllocatedMemory+=size; - if (currentAllocatedMemory>maximumAllocatedMemory) - maximumAllocatedMemory=currentAllocatedMemory; - return(ptr); -} -////////////////////////////////////////////////////////////////////////////// -// -////////////////////////////////////////////////////////////////////////////// -// -// -// -// -// -// -////////////////////////////////////////////////////////////////////////////// -void memory_malloc_secure(void **new_ptr, UINT32 size, char *info) +Really, just six megabytes short of using the entire address space... +Why not? We could just allocate the entire space and then use the MMU code to do +things like call functions and whatnot... +In other words, read/write would just tuck the value into the host RAM space and +the I/O function would take care of any weird stuff... + +Actually: writes would tuck in the value, but reads would have to be handled +correctly since some registers do not fall on the same address as far as reading +goes... Still completely doable though. :-) +*/ + +#include "memory.h" + +uint8_t jagMemSpace[0xF20000]; // The entire memory space of the Jaguar...! + +uint8_t * jaguarMainRAM = &jagMemSpace[0x000000]; +uint8_t * jaguarMainROM = &jagMemSpace[0x800000]; +uint8_t * cdRAM = &jagMemSpace[0xDFFF00]; +uint8_t * gpuRAM = &jagMemSpace[0xF03000]; +uint8_t * dspRAM = &jagMemSpace[0xF1B000]; + +#if 0 +union Word { - void *ptr; - - fprintf(log_get(),"memory: allocating %i bytes of memory for <%s>...",size,(info==NULL)?"unknown":info); - ptr=(void*)malloc(size); - if (ptr==NULL) - { - fprintf(log_get(),"failed\n"); - log_done(); - exit(0); - } - memory_addMemInfo(ptr,size,info); - currentAllocatedMemory+=size; - if (currentAllocatedMemory>maximumAllocatedMemory) - maximumAllocatedMemory=currentAllocatedMemory; - *new_ptr=ptr; - fprintf(log_get(),"ok\n"); -} -////////////////////////////////////////////////////////////////////////////// -// -////////////////////////////////////////////////////////////////////////////// -// -// -// -////////////////////////////////////////////////////////////////////////////// -void memory_memoryUsage(FILE *fp) + uint16_t word; + struct { + // This changes depending on endianness... +#ifdef __BIG_ENDIAN__ + uint8_t hi, lo; // Big endian +#else + uint8_t lo, hi; // Little endian +#endif + }; +}; +#endif + +#if 0 +union DWord { - sMemBlockInfo *alias; - UINT32 total=0; - - fprintf(fp,"Memory usage:\n"); - alias=&memoryInfo; - alias=alias->next; - while (alias) - { - fprintf(fp,"\t%16i bytes : <%s> (@ 0x%.8x)\n",alias->size,alias->info,alias->ptr); - total+=alias->size; - alias=alias->next; - } - fprintf(fp,"\n\t%16i bytes total(%i Mb)\n",total,(total>>20)); - fprintf(fp,"\n\t%16i bytes memory peak(%i Mb)\n",maximumAllocatedMemory,maximumAllocatedMemory>>20); -} + uint32_t dword; + struct + { +#ifdef __BIG_ENDIAN__ + uint16_t hiw, low; +#else + uint16_t low, hiw; +#endif + }; +}; +#endif -////////////////////////////////////////////////////////////////////////////// -// -////////////////////////////////////////////////////////////////////////////// -// -// -// -////////////////////////////////////////////////////////////////////////////// -void memory_done(void) +#if 0 +static void test(void) { + Word reg; + reg.word = 0x1234; + reg.lo = 0xFF; + reg.hi = 0xEE; + + DWord reg2; + reg2.hiw = 0xFFFE; + reg2.low = 0x3322; + reg2.low.lo = 0x11; } -////////////////////////////////////////////////////////////////////////////// -// -////////////////////////////////////////////////////////////////////////////// -// -// -// -////////////////////////////////////////////////////////////////////////////// -void memory_free(void *ptr) +#endif + +// OR, we could do like so: +#if 0 +#ifdef __BIG_ENDIAN__ +#define DWORD_BYTE_HWORD_H 1 +#define DWORD_BYTE_HWORD_L 2 +#define DWORD_BYTE_LWORD_H 3 +#define DWORD_BYTE_LWORD_L 4 +#else +#define DWORD_BYTE_HWORD_H 4 +#define DWORD_BYTE_HWORD_L 3 +#define DWORD_BYTE_LWORD_H 2 +#define DWORD_BYTE_LWORD_L 1 +#endif +// But this starts to get cumbersome after a while... Is union really better? + +//More union stuff... +unsigned long ByteSwap1 (unsigned long nLongNumber) { - sMemBlockInfo *alias; - - alias=&memoryInfo; - alias=alias->next; - while (alias->ptr!=ptr) - alias=alias->next; - free(ptr); - currentAllocatedMemory-=alias->size; - alias->prev->next=alias->next; - if (alias->next!=NULL) - alias->next->prev=alias->prev; - free(alias); + union u {unsigned long vi; unsigned char c[sizeof(unsigned long)];}; + union v {unsigned long ni; unsigned char d[sizeof(unsigned long)];}; + union u un; + union v vn; + un.vi = nLongNumber; + vn.d[0]=un.c[3]; + vn.d[1]=un.c[2]; + vn.d[2]=un.c[1]; + vn.d[3]=un.c[0]; + return (vn.ni); } +#endif + +//Not sure if this is a good approach yet... +//should be if we use proper aliasing, and htonl and friends... +#if 1 +uint32_t & butch = *((uint32_t *)&jagMemSpace[0xDFFF00]); // base of Butch == interrupt control register, R/W +uint32_t & dscntrl = *((uint32_t *)&jagMemSpace[0xDFFF04]); // DSA control register, R/W +uint16_t & ds_data = *((uint16_t *)&jagMemSpace[0xDFFF0A]); // DSA TX/RX data, R/W +uint32_t & i2cntrl = *((uint32_t *)&jagMemSpace[0xDFFF10]); // i2s bus control register, R/W +uint32_t & sbcntrl = *((uint32_t *)&jagMemSpace[0xDFFF14]); // CD subcode control register, R/W +uint32_t & subdata = *((uint32_t *)&jagMemSpace[0xDFFF18]); // Subcode data register A +uint32_t & subdatb = *((uint32_t *)&jagMemSpace[0xDFFF1C]); // Subcode data register B +uint32_t & sb_time = *((uint32_t *)&jagMemSpace[0xDFFF20]); // Subcode time and compare enable (D24) +uint32_t & fifo_data = *((uint32_t *)&jagMemSpace[0xDFFF24]); // i2s FIFO data +uint32_t & i2sdat2 = *((uint32_t *)&jagMemSpace[0xDFFF28]); // i2s FIFO data (old) +uint32_t & unknown = *((uint32_t *)&jagMemSpace[0xDFFF2C]); // Seems to be some sort of I2S interface +#else +uint32_t butch, dscntrl, ds_data, i2cntrl, sbcntrl, subdata, subdatb, sb_time, fifo_data, i2sdat2, unknown; +#endif + +#warning "Need to separate out this stuff (or do we???)" +//if we use a contiguous memory space, we don't need this shit... +//err, maybe we do, let's not be so hasty now... :-) + +//#define ENDIANSAFE(x) htonl(x) + +// The nice thing about doing it this way is that on big endian machines, htons/l +// compile to nothing and on Intel machines, it compiles down to a single bswap instruction. +// So endianness issues go away nicely without a lot of drama. :-D + +#define BSWAP16(x) (htons(x)) +#define BSWAP32(x) (htonl(x)) +//this isn't endian safe... +#define BSWAP64(x) ((htonl(x & 0xFFFFFFFF) << 32) | htonl(x >> 32)) +// Actually, we use ESAFExx() macros instead of this, and we use GCC to check the endianness... +// Actually, considering that "byteswap.h" doesn't exist elsewhere, the above +// is probably our best bet here. Just need to rename them to ESAFExx(). + +// Look at and see if that header is portable or not. + +uint16_t & memcon1 = *((uint16_t *)&jagMemSpace[0xF00000]); +uint16_t & memcon2 = *((uint16_t *)&jagMemSpace[0xF00002]); +uint16_t & hc = *((uint16_t *)&jagMemSpace[0xF00004]); +uint16_t & vc = *((uint16_t *)&jagMemSpace[0xF00006]); +uint16_t & lph = *((uint16_t *)&jagMemSpace[0xF00008]); +uint16_t & lpv = *((uint16_t *)&jagMemSpace[0xF0000A]); +uint64_t & obData = *((uint64_t *)&jagMemSpace[0xF00010]); +uint32_t & olp = *((uint32_t *)&jagMemSpace[0xF00020]); +uint16_t & obf = *((uint16_t *)&jagMemSpace[0xF00026]); +uint16_t & vmode = *((uint16_t *)&jagMemSpace[0xF00028]); +uint16_t & bord1 = *((uint16_t *)&jagMemSpace[0xF0002A]); +uint16_t & bord2 = *((uint16_t *)&jagMemSpace[0xF0002C]); +uint16_t & hp = *((uint16_t *)&jagMemSpace[0xF0002E]); +uint16_t & hbb = *((uint16_t *)&jagMemSpace[0xF00030]); +uint16_t & hbe = *((uint16_t *)&jagMemSpace[0xF00032]); +uint16_t & hs = *((uint16_t *)&jagMemSpace[0xF00034]); +uint16_t & hvs = *((uint16_t *)&jagMemSpace[0xF00036]); +uint16_t & hdb1 = *((uint16_t *)&jagMemSpace[0xF00038]); +uint16_t & hdb2 = *((uint16_t *)&jagMemSpace[0xF0003A]); +uint16_t & hde = *((uint16_t *)&jagMemSpace[0xF0003C]); +uint16_t & vp = *((uint16_t *)&jagMemSpace[0xF0003E]); +uint16_t & vbb = *((uint16_t *)&jagMemSpace[0xF00040]); +uint16_t & vbe = *((uint16_t *)&jagMemSpace[0xF00042]); +uint16_t & vs = *((uint16_t *)&jagMemSpace[0xF00044]); +uint16_t & vdb = *((uint16_t *)&jagMemSpace[0xF00046]); +uint16_t & vde = *((uint16_t *)&jagMemSpace[0xF00048]); +uint16_t & veb = *((uint16_t *)&jagMemSpace[0xF0004A]); +uint16_t & vee = *((uint16_t *)&jagMemSpace[0xF0004C]); +uint16_t & vi = *((uint16_t *)&jagMemSpace[0xF0004E]); +uint16_t & pit0 = *((uint16_t *)&jagMemSpace[0xF00050]); +uint16_t & pit1 = *((uint16_t *)&jagMemSpace[0xF00052]); +uint16_t & heq = *((uint16_t *)&jagMemSpace[0xF00054]); +uint32_t & bg = *((uint32_t *)&jagMemSpace[0xF00058]); +uint16_t & int1 = *((uint16_t *)&jagMemSpace[0xF000E0]); +uint16_t & int2 = *((uint16_t *)&jagMemSpace[0xF000E2]); +uint8_t * clut = (uint8_t *) &jagMemSpace[0xF00400]; +uint8_t * lbuf = (uint8_t *) &jagMemSpace[0xF00800]; +uint32_t & g_flags = *((uint32_t *)&jagMemSpace[0xF02100]); +uint32_t & g_mtxc = *((uint32_t *)&jagMemSpace[0xF02104]); +uint32_t & g_mtxa = *((uint32_t *)&jagMemSpace[0xF02108]); +uint32_t & g_end = *((uint32_t *)&jagMemSpace[0xF0210C]); +uint32_t & g_pc = *((uint32_t *)&jagMemSpace[0xF02110]); +uint32_t & g_ctrl = *((uint32_t *)&jagMemSpace[0xF02114]); +uint32_t & g_hidata = *((uint32_t *)&jagMemSpace[0xF02118]); +uint32_t & g_divctrl = *((uint32_t *)&jagMemSpace[0xF0211C]); +uint32_t g_remain; // Dual register with $F0211C +uint32_t & a1_base = *((uint32_t *)&jagMemSpace[0xF02200]); +uint32_t & a1_flags = *((uint32_t *)&jagMemSpace[0xF02204]); +uint32_t & a1_clip = *((uint32_t *)&jagMemSpace[0xF02208]); +uint32_t & a1_pixel = *((uint32_t *)&jagMemSpace[0xF0220C]); +uint32_t & a1_step = *((uint32_t *)&jagMemSpace[0xF02210]); +uint32_t & a1_fstep = *((uint32_t *)&jagMemSpace[0xF02214]); +uint32_t & a1_fpixel = *((uint32_t *)&jagMemSpace[0xF02218]); +uint32_t & a1_inc = *((uint32_t *)&jagMemSpace[0xF0221C]); +uint32_t & a1_finc = *((uint32_t *)&jagMemSpace[0xF02220]); +uint32_t & a2_base = *((uint32_t *)&jagMemSpace[0xF02224]); +uint32_t & a2_flags = *((uint32_t *)&jagMemSpace[0xF02228]); +uint32_t & a2_mask = *((uint32_t *)&jagMemSpace[0xF0222C]); +uint32_t & a2_pixel = *((uint32_t *)&jagMemSpace[0xF02230]); +uint32_t & a2_step = *((uint32_t *)&jagMemSpace[0xF02234]); +uint32_t & b_cmd = *((uint32_t *)&jagMemSpace[0xF02238]); +uint32_t & b_count = *((uint32_t *)&jagMemSpace[0xF0223C]); +uint64_t & b_srcd = *((uint64_t *)&jagMemSpace[0xF02240]); +uint64_t & b_dstd = *((uint64_t *)&jagMemSpace[0xF02248]); +uint64_t & b_dstz = *((uint64_t *)&jagMemSpace[0xF02250]); +uint64_t & b_srcz1 = *((uint64_t *)&jagMemSpace[0xF02258]); +uint64_t & b_srcz2 = *((uint64_t *)&jagMemSpace[0xF02260]); +uint64_t & b_patd = *((uint64_t *)&jagMemSpace[0xF02268]); +uint32_t & b_iinc = *((uint32_t *)&jagMemSpace[0xF02270]); +uint32_t & b_zinc = *((uint32_t *)&jagMemSpace[0xF02274]); +uint32_t & b_stop = *((uint32_t *)&jagMemSpace[0xF02278]); +uint32_t & b_i3 = *((uint32_t *)&jagMemSpace[0xF0227C]); +uint32_t & b_i2 = *((uint32_t *)&jagMemSpace[0xF02280]); +uint32_t & b_i1 = *((uint32_t *)&jagMemSpace[0xF02284]); +uint32_t & b_i0 = *((uint32_t *)&jagMemSpace[0xF02288]); +uint32_t & b_z3 = *((uint32_t *)&jagMemSpace[0xF0228C]); +uint32_t & b_z2 = *((uint32_t *)&jagMemSpace[0xF02290]); +uint32_t & b_z1 = *((uint32_t *)&jagMemSpace[0xF02294]); +uint32_t & b_z0 = *((uint32_t *)&jagMemSpace[0xF02298]); +uint16_t & jpit1 = *((uint16_t *)&jagMemSpace[0xF10000]); +uint16_t & jpit2 = *((uint16_t *)&jagMemSpace[0xF10002]); +uint16_t & jpit3 = *((uint16_t *)&jagMemSpace[0xF10004]); +uint16_t & jpit4 = *((uint16_t *)&jagMemSpace[0xF10006]); +uint16_t & clk1 = *((uint16_t *)&jagMemSpace[0xF10010]); +uint16_t & clk2 = *((uint16_t *)&jagMemSpace[0xF10012]); +uint16_t & clk3 = *((uint16_t *)&jagMemSpace[0xF10014]); +uint16_t & j_int = *((uint16_t *)&jagMemSpace[0xF10020]); +uint16_t & asidata = *((uint16_t *)&jagMemSpace[0xF10030]); +uint16_t & asictrl = *((uint16_t *)&jagMemSpace[0xF10032]); +uint16_t asistat; // Dual register with $F10032 +uint16_t & asiclk = *((uint16_t *)&jagMemSpace[0xF10034]); +uint16_t & joystick = *((uint16_t *)&jagMemSpace[0xF14000]); +uint16_t & joybuts = *((uint16_t *)&jagMemSpace[0xF14002]); +uint32_t & d_flags = *((uint32_t *)&jagMemSpace[0xF1A100]); +uint32_t & d_mtxc = *((uint32_t *)&jagMemSpace[0xF1A104]); +uint32_t & d_mtxa = *((uint32_t *)&jagMemSpace[0xF1A108]); +uint32_t & d_end = *((uint32_t *)&jagMemSpace[0xF1A10C]); +uint32_t & d_pc = *((uint32_t *)&jagMemSpace[0xF1A110]); +uint32_t & d_ctrl = *((uint32_t *)&jagMemSpace[0xF1A114]); +uint32_t & d_mod = *((uint32_t *)&jagMemSpace[0xF1A118]); +uint32_t & d_divctrl = *((uint32_t *)&jagMemSpace[0xF1A11C]); +uint32_t d_remain; // Dual register with $F0211C +uint32_t & d_machi = *((uint32_t *)&jagMemSpace[0xF1A120]); +uint16_t & ltxd = *((uint16_t *)&jagMemSpace[0xF1A148]); +uint16_t lrxd; // Dual register with $F1A148 +uint16_t & rtxd = *((uint16_t *)&jagMemSpace[0xF1A14C]); +uint16_t rrxd; // Dual register with $F1A14C +uint8_t & sclk = *((uint8_t *) &jagMemSpace[0xF1A150]); +uint8_t sstat; // Dual register with $F1A150 +uint32_t & smode = *((uint32_t *)&jagMemSpace[0xF1A154]); + +// Memory debugging identifiers + +const char * whoName[10] = + { "Unknown", "Jaguar", "DSP", "GPU", "TOM", "JERRY", "M68K", "Blitter", "OP", "Debugger" };