X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmemory.h;h=e081550e104ffe1e505e0765fa44a26264731ced;hb=dadebc1a7525d196d5ee406be7b9d804d5f9945d;hp=c2e49df78d23e9cc4596473afbcf587fd46c26fa;hpb=94e1e961b57f253b760298ab0bae96a7de6d20fa;p=virtualjaguar diff --git a/src/memory.h b/src/memory.h index c2e49df..e081550 100644 --- a/src/memory.h +++ b/src/memory.h @@ -13,13 +13,14 @@ extern uint8 jagMemSpace[]; extern uint8 * jaguarMainRAM; extern uint8 * jaguarMainROM; -extern uint8 jaguarBootROM[]; -extern uint8 jaguarCDBootROM[]; +//extern uint8 jaguarBootROM[]; +//extern uint8 jaguarCDBootROM[]; +//extern uint8 jaguarDevBootROM1[]; +//extern uint8 jaguarDevBootROM2[]; +//extern uint8 jaguarDevCDBootROM[]; extern uint8 * gpuRAM; extern uint8 * dspRAM; -extern uint16 & memcon1, & memcon2, & hc, & vc, & lph, & lpv; - #if 1 extern uint32 & butch, & dscntrl; extern uint16 & ds_data; @@ -28,21 +29,55 @@ extern uint32 & i2cntrl, & sbcntrl, & subdata, & subdatb, & sb_time, & fifo_data extern uint32 butch, dscntrl, ds_data, i2cntrl, sbcntrl, subdata, subdatb, sb_time, fifo_data, i2sdat2, unknown; #endif -extern uint32 obData, olp, obf, vmode, bord1, bord2, hp, hbb, hbe, hs, hvs, - hdb1, hdb2, hde, vp, vbb, vbe, vs, vdb, vde, veb, vee, vi, pit0, pit1, heq, bg, int1, int2, clut, lbuf, - g_flags, g_mtxc, g_mtxa, g_end, g_pc, g_ctrl, g_hidata, g_remain, g_divctrl, - a1_base, a1_pixel, a1_flags, a1_clip, a1_step, a1_fstep, a1_fpixel, a1_inc, a1_finc, - a2_base, a2_flags, a2_pixel, a2_mask, a2_step, b_cmd, b_count, b_srcd, b_dstd, b_dstz, b_srcz1, b_srcz2, - b_patd, b_iinc, b_zinc, b_stop, b_i3, b_i2, b_i1, b_i0, b_z3, b_z2, b_z1, b_z0, - jpit1, jpit2, jpit3, jpit4, clk1, clk2, clk3, j_int, asidata, asistat, asictrl, asiclk, joystick, - joybuts, d_flags, d_mtxc, d_mtxa, d_end, d_pc, d_ctrl, d_mod, d_remain, d_divctrl, d_machi, - ltxd, rtxd, sstat, sclk, smode; +extern uint16 & memcon1, & memcon2, & hc, & vc, & lph, & lpv; +extern uint64 & obData; +extern uint32 & olp; +extern uint16 & 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 & bg; +extern uint16 & int1, & int2; +extern uint8 * clut, * lbuf; +extern uint32 & g_flags, & g_mtxc, & g_mtxa, & g_end, & g_pc, & g_ctrl, + & g_hidata, & g_divctrl; +extern uint32 g_remain; +extern uint32 & 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 & b_srcd, & b_dstd, & b_dstz, & b_srcz1, & b_srcz2, & b_patd; +extern uint32 & b_iinc, & b_zinc, & b_stop, & b_i3, & b_i2, & b_i1, & b_i0, & b_z3, + & b_z2, & b_z1, & b_z0; +extern uint16 & jpit1, & jpit2, & jpit3, & jpit4, & clk1, & clk2, & clk3, & j_int, + & asidata, & asictrl; +extern uint16 asistat; +extern uint16 & asiclk, & joystick, & joybuts; +extern uint32 & d_flags, & d_mtxc, & d_mtxa, & d_end, & d_pc, & d_ctrl, + & d_mod, & d_divctrl; +extern uint32 d_remain; +extern uint32 & d_machi; +extern uint16 & ltxd, lrxd, & rtxd, rrxd; +extern uint8 & sclk, sstat; +extern uint32 & smode; +/* +uint16 & ltxd = *((uint16 *)&jagMemSpace[0xF1A148]); +uint16 lrxd; // Dual register with $F1A148 +uint16 & rtxd = *((uint16 *)&jagMemSpace[0xF1A14C]); +uint16 rrxd; // Dual register with $F1A14C +uint8 & sclk = *((uint8 *) &jagMemSpace[0xF1A150]); +uint8 sstat; // Dual register with $F1A150 +uint32 & smode = *((uint32 *)&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 @@ -60,6 +95,9 @@ extern const char * whoName[9]; #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. :-) @@ -76,5 +114,100 @@ extern const char * whoName[9]; #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 + + +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__