#define fetch8(x) fetch8func((cycles++,(x))) #define NFAKES 16 typedef struct { unsigned a; unsigned x; unsigned y; unsigned pc; /* Keep pbr in there too */ unsigned dbr; unsigned d; unsigned s; unsigned p; unsigned e; unsigned char *memory; unsigned int exception; unsigned int ticks; unsigned int cycles; unsigned int insts; unsigned int r[NFAKES]; } saved_state_type; #define GET_P \ ((GET_NBIT << 7) \ | (GET_VBIT << 6) \ | (GET_MBIT << 5) \ | (GET_XBIT << 4) \ | (GET_DBIT << 3) \ | (GET_IBIT << 2) \ | (GET_ZBIT << 1) \ | (GET_CBIT << 0)) #define SET_P(_bits) \ { int bits = _bits; \ SET_NBIT((bits>>7)&1); \ SET_VBIT((bits>>6)&1); \ SET_MBIT((bits>>5)&1); \ SET_XBIT((bits>>4)&1); \ SET_DBIT((bits>>3)&1); \ SET_IBIT((bits>>2)&1); \ SET_ZBIT((bits>>1)&1); \ SET_CBIT((bits>>0)&1); } #define BFLAG (1<<4) #define DFLAG (1<<3) #define GET_A (the_a) #define GET_E (the_e) #define GET_B (the_b) #define GET_CBIT (the_cbit) #define GET_D (the_d) #define GET_DBIT (the_dbit) #define GET_DBR_HIGH (the_dbr) #define GET_DBR_LOW (the_dbr >> 16) #define GET_DPR (the_dpr) #define GET_IBIT (the_ibit) #define GET_MBIT (the_mbit) #define SET_XBIT(x) { the_xbit = x; } #define GET_NBIT (the_nbit) #define GET_PBRPC (the_pc) #define GET_PBR_HIGH (the_pc & 0xff0000) #define GET_PBR_LOW (the_pc >> 16) #define GET_PC (the_pc & 0xffff) #define GET_S (the_s) #define GET_VBIT (the_vbit) #define GET_X (the_x) #define GET_XBIT (the_xbit) #define GET_Y (the_y) #define GET_ZBIT (the_zbit) #define IFLAG (1<<2) #define INC_PC(x) {the_pc += x;} #define POP16(x) { int _xx; POP8(x); POP8(_xx); x+= _xx<<8;} #define POP24(x) { int _xx; POP8(x); POP8(_xx); x += _xx << 8; POP8(_xx); x += _xx << 16; } #define POP8(x) { SET_S(GET_S +1); x = fetch8(GET_S);} #define PUSH16(x) { int _xx = x;PUSH8(_xx >> 8); PUSH8(_xx);} #define PUSH8(x) { store8(GET_S, x); SET_S(GET_S-1);} #define SET_A(x) { the_a = x & AMASK; } #define SET_B(x) { the_b = x;} #define SET_CBIT(x) { the_cbit = x;} #define SET_CBIT_M(x) { the_cbit = (x & (GET_MBIT ? 0x100: 0x10000)) != 0;} #define SET_CBIT_X(x) { the_cbit = (x & (GET_XBIT ? 0x100: 0x10000)) != 0;} #define SET_D(x) {the_d = x;} #define SET_DBIT(x) { the_dbit= x;} #define SET_DBR_LOW(x) {the_dbr = (x<<16);} #define SET_DPR(x) { the_dpr = x;} #define SET_E(x) { the_e = x;} #define SET_IBIT(x) { the_ibit = x;} #define SET_MBIT(x) { the_mbit = x; } #define SET_NBIT(x) { the_nbit = x;} #define SET_NBIT_16(x) { the_nbit= ( ((x) & (0x8000)) != 0);} #define SET_NBIT_8(x) { the_nbit= ( ((x) & (0x80)) != 0);} #define SET_NBIT_M(x) { if (GET_MBIT) { SET_NBIT_8(x); } else { SET_NBIT_16(x);}} #define SET_NBIT_X(x) { if (GET_XBIT) { SET_NBIT_8(x); } else { SET_NBIT_16(x);}} #define SET_PBR(x) { the_pc = (the_pc & 0xffff) + ((x)<<16);} #define SET_PBRPC(x) { the_pc = x;} #define SET_ONLY_PC(x) { the_pc = (the_pc & 0xff0000) + ((x ) & 0xffff);} #define SET_S(x) {the_s = x; } #define SET_VBIT_16(x) {the_vbit = ((((int)x) < -0x8000) || (((int)x) > 0x7fff));} #define SET_VBIT_8(x) {the_vbit = ((((int)x) < -0x80) || (((int)x) > 0x7f));} /*#define SET_VBIT_M(x) { if(GET_MBIT) {SET_VBIT_8(x);}else {SET_VBIT_16(x);}}*/ #define SET_ZBIT_16(x) { the_zbit = ((x & 0xffff) == 0);} #define SET_ZBIT_8(x) { the_zbit = ((x & 0xff) == 0);} #define SET_ZBIT_M(x) { if(GET_MBIT) {SET_ZBIT_8(x);}else {SET_ZBIT_16(x);}} #define SET_ZBIT_X(x) { if(GET_XBIT) {SET_ZBIT_8(x);}else {SET_ZBIT_16(x);}} #define SET_VBIT(x) { the_vbit = x; } #define SET_ZBIT(x) { the_zbit = x; } #define SET_X(x) { the_x = (x) & (GET_XBIT ? 0xff : 0xffff);} #define SET_Y(x) { the_y = (x) & (GET_XBIT ? 0xff : 0xffff);} #define AMASK ( GET_MBIT ? 0xff : 0xffff) #define SMASK ( GET_MBIT ? 0x80 : 0x8000) #define SET_VBIT_M(s1,acc,d) ( the_vbit = ((s1 ^ acc) & (acc ^ d) & SMASK )!=0) /*#define fetch8(x) (memory[x&MMASK])*/ #define fetch16(x) (fetch8(x) + (fetch8((x)+1)<<8)) #define fetch24(x) (fetch8(x) + (fetch8((x)+1)<<8) + (fetch8((x)+2)<<16)) #define fetch8sext(x) ((char)fetch8(x)) #define fetch16sext(x) ((short)fetch16(x)) #define store8(x,y) {memory[x&MMASK]=y;} #define store16(x,y) { store8(x,y); store8(x+1,y>>8);} #define SEXTM(x) (GET_MBIT ? ((char)x): ((short)x)) #define STARTFUNC() \ register unsigned char *memory;\ int the_s; \ int the_b; \ int the_x; \ int the_d; \ int the_y; \ int the_dbr; \ int the_pc; \ int the_nbit; \ int the_vbit; \ int the_z; \ int the_mbit; \ int the_ibit; \ int the_xbit; \ int the_zbit; \ int the_cbit; \ int the_dbit; \ int the_dpr; \ int the_e; \ int the_a; \ int tick_start = get_now ();\ int cycles = 0; \ int insts = 0; \ \ SET_E (saved_state.e); \ SET_P (saved_state.p); \ SET_A (saved_state.a); \ SET_X (saved_state.x); \ SET_Y (saved_state.y); \ SET_ONLY_PC (saved_state.pc); \ SET_PBR (saved_state.pc >> 16); \ SET_DBR_LOW (saved_state.dbr); \ SET_D (saved_state.d); \ SET_S (saved_state.s); \ memory = saved_state.memory ; \ { int k; for (k = 0; k < NFAKES; k++) \ store16(0x10 + k * 2, saved_state.r[k]); }\ \ top: \ #define ENDFUNC() \ rethink: \ saved_state.ticks += get_now () - tick_start;\ saved_state.cycles += cycles; \ saved_state.insts += insts; \ { int k; for (k = 0; k < NFAKES; k++) \ saved_state.r[k] = fetch16(0x10 + k * 2); }\ \ saved_state.e = GET_E; \ saved_state.p = GET_P; \ saved_state.a = GET_A; \ saved_state.x = GET_X; \ saved_state.y = GET_Y; \ saved_state.pc = GET_PBRPC; \ saved_state.dbr = GET_DBR_LOW; \ saved_state.d = GET_D; \ saved_state.s = GET_S; \ \ return 0; \ extern saved_state_type saved_state; #define MMASK 0xfffff #define NUMSEGS 16 #define RETHINK goto rethink;