X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmemory.h;h=81f96c904755c84c2b44b288c59214a4ae06b47e;hb=10d7ab1fb217c01030a0b637f9a571c1faf61ede;hp=5e922de99e05de2ab036119f22e5d8cdb4ca92b2;hpb=683f283e1328164c176618088c34408ea6c03cf7;p=virtualjaguar diff --git a/src/memory.h b/src/memory.h index 5e922de..81f96c9 100644 --- a/src/memory.h +++ b/src/memory.h @@ -1,21 +1,208 @@ // // MEMORY.H: Header file // +// All Jaguar related memory and I/O locations are contained in this file +// #ifndef __MEMORY_H__ #define __MEMORY_H__ -#include -//#include -//#include -#include "types.h" -//#include "log.h" +#include + +extern uint8_t jagMemSpace[]; + +extern uint8_t * jaguarMainRAM; +extern uint8_t * jaguarMainROM; +extern uint8_t * gpuRAM; +extern uint8_t * dspRAM; + +#if 1 +extern uint32_t & butch, & dscntrl; +extern uint16_t & ds_data; +extern uint32_t & i2cntrl, & sbcntrl, & subdata, & subdatb, & sb_time, & fifo_data, & i2sdat2, & unknown; +#else +extern uint32_t butch, dscntrl, ds_data, i2cntrl, sbcntrl, subdata, subdatb, sb_time, fifo_data, i2sdat2, unknown; +#endif + +extern uint16_t & memcon1, & memcon2, & hc, & vc, & lph, & lpv; +extern uint64_t & obData; +extern uint32_t & olp; +extern uint16_t & obf, & vmode, & bord1, & bord2, & hp, & hbb, & hbe, & hs, + & hvs, & hdb1, & hdb2, & hde, & vp, & vbb, & vbe, & vs, & vdb, & vde, + & veb, & vee, & vi, & pit0, & pit1, & heq; +extern uint32_t & bg; +extern uint16_t & int1, & int2; +extern uint8_t * clut, * lbuf; +extern uint32_t & g_flags, & g_mtxc, & g_mtxa, & g_end, & g_pc, & g_ctrl, + & g_hidata, & g_divctrl; +extern uint32_t g_remain; +extern uint32_t & a1_base, & a1_flags, & a1_clip, & a1_pixel, & a1_step, + & a1_fstep, & a1_fpixel, & a1_inc, & a1_finc, & a2_base, & a2_flags, + & a2_mask, & a2_pixel, & a2_step, & b_cmd, & b_count; +extern uint64_t & b_srcd, & b_dstd, & b_dstz, & b_srcz1, & b_srcz2, & b_patd; +extern uint32_t & b_iinc, & b_zinc, & b_stop, & b_i3, & b_i2, & b_i1, & b_i0, & b_z3, + & b_z2, & b_z1, & b_z0; +extern uint16_t & jpit1, & jpit2, & jpit3, & jpit4, & clk1, & clk2, & clk3, & j_int, + & asidata, & asictrl; +extern uint16_t asistat; +extern uint16_t & asiclk, & joystick, & joybuts; +extern uint32_t & d_flags, & d_mtxc, & d_mtxa, & d_end, & d_pc, & d_ctrl, + & d_mod, & d_divctrl; +extern uint32_t d_remain; +extern uint32_t & d_machi; +extern uint16_t & ltxd, lrxd, & rtxd, rrxd; +extern uint8_t & sclk, sstat; +extern uint32_t & smode; +/* +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]); +*/ + +// Read/write tracing enumeration + +enum { UNKNOWN, JAGUAR, DSP, GPU, TOM, JERRY, M68K, BLITTER, OP }; +extern const char * whoName[9]; + +// BIOS identification enum + +//enum { BIOS_NORMAL=0x01, BIOS_CD=0x02, BIOS_STUB1=0x04, BIOS_STUB2=0x08, BIOS_DEV_CD=0x10 }; +//extern int biosAvailable; + +// Some handy macros to help converting native endian to big endian (jaguar native) +// & vice versa + +#define SET64(r, a, v) r[(a)] = ((v) & 0xFF00000000000000) >> 56, r[(a)+1] = ((v) & 0x00FF000000000000) >> 48, \ + r[(a)+2] = ((v) & 0x0000FF0000000000) >> 40, r[(a)+3] = ((v) & 0x000000FF00000000) >> 32, \ + r[(a)+4] = ((v) & 0xFF000000) >> 24, r[(a)+5] = ((v) & 0x00FF0000) >> 16, \ + r[(a)+6] = ((v) & 0x0000FF00) >> 8, r[(a)+7] = (v) & 0x000000FF +#define GET64(r, a) (((uint64_t)r[(a)] << 56) | ((uint64_t)r[(a)+1] << 48) | \ + ((uint64_t)r[(a)+2] << 40) | ((uint64_t)r[(a)+3] << 32) | \ + ((uint64_t)r[(a)+4] << 24) | ((uint64_t)r[(a)+5] << 16) | \ + ((uint64_t)r[(a)+6] << 8) | (uint64_t)r[(a)+7]) +#define SET32(r, a, v) r[(a)] = ((v) & 0xFF000000) >> 24, r[(a)+1] = ((v) & 0x00FF0000) >> 16, \ + r[(a)+2] = ((v) & 0x0000FF00) >> 8, r[(a)+3] = (v) & 0x000000FF +#define GET32(r, a) ((r[(a)] << 24) | (r[(a)+1] << 16) | (r[(a)+2] << 8) | r[(a)+3]) +#define SET16(r, a, v) r[(a)] = ((v) & 0xFF00) >> 8, r[(a)+1] = (v) & 0xFF +#define GET16(r, a) ((r[(a)] << 8) | r[(a)+1]) + +//This doesn't seem to work on OSX. So have to figure something else out. :-( +//byteswap.h doesn't exist on OSX. +#if 0 +// This is GCC specific, but we can fix that if we need to... +// Big plus of this approach is that these compile down to single instructions on little +// endian machines while one big endian machines we don't have any overhead. :-) + +#include +#include + +#if __BYTE_ORDER == __LITTLE_ENDIAN + #define ESAFE16(x) bswap_16(x) + #define ESAFE32(x) bswap_32(x) + #define ESAFE64(x) bswap_64(x) +#else + #define ESAFE16(x) (x) + #define ESAFE32(x) (x) + #define ESAFE64(x) (x) +#endif +#endif + +#if 0 +Stuff ripped out of Hatari, that may be useful: + +/* Can the actual CPU access unaligned memory? */ +#ifndef CPU_CAN_ACCESS_UNALIGNED +# if defined(__i386__) || defined(powerpc) || defined(__mc68020__) +# define CPU_CAN_ACCESS_UNALIGNED 1 +# else +# define CPU_CAN_ACCESS_UNALIGNED 0 +# endif +#endif + + +/* If the CPU can access unaligned memory, use these accelerated functions: */ +#if CPU_CAN_ACCESS_UNALIGNED + +#include -void InitMemory(void); -void MemoryDone(void); -void memory_malloc_secure(void ** new_ptr, uint32 size, char * info); -void * memory_malloc(uint32 size, char * info); -void memory_free(void * ptr); -void memory_memoryUsage(FILE * fp); +static inline uae_u32 do_get_mem_long(void *a) +{ + return SDL_SwapBE32(*(uae_u32 *)a); +} + +static inline uae_u16 do_get_mem_word(void *a) +{ + return SDL_SwapBE16(*(uae_u16 *)a); +} + + +static inline void do_put_mem_long(void *a, uae_u32 v) +{ + *(uae_u32 *)a = SDL_SwapBE32(v); +} + +static inline void do_put_mem_word(void *a, uae_u16 v) +{ + *(uae_u16 *)a = SDL_SwapBE16(v); +} + + +#else /* Cpu can not access unaligned memory: */ + + +static inline uae_u32 do_get_mem_long(void *a) +{ + uae_u8 *b = (uae_u8 *)a; + + return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3]; +} + +static inline uae_u16 do_get_mem_word(void *a) +{ + uae_u8 *b = (uae_u8 *)a; + + return (b[0] << 8) | b[1]; +} + + +static inline void do_put_mem_long(void *a, uae_u32 v) +{ + uae_u8 *b = (uae_u8 *)a; + + b[0] = v >> 24; + b[1] = v >> 16; + b[2] = v >> 8; + b[3] = v; +} + +static inline void do_put_mem_word(void *a, uae_u16 v) +{ + uae_u8 *b = (uae_u8 *)a; + + b[0] = v >> 8; + b[1] = v; +} + + +#endif /* CPU_CAN_ACCESS_UNALIGNED */ + + +/* These are same for all architectures: */ + +static inline uae_u8 do_get_mem_byte(uae_u8 *a) +{ + return *a; +} + +static inline void do_put_mem_byte(uae_u8 *a, uae_u8 v) +{ + *a = v; +} #endif + +#endif // __MEMORY_H__