#define cond_O ( VF_SET()) #define cond_NO (!VF_SET()) #define cond_B ( CF_SET()) #define cond_NB (!CF_SET()) #define cond_E ( ZF_SET()) #define cond_NE (!ZF_SET()) #define cond_BE ( CF_SET() || ZF_SET()) #define cond_NBE (!CF_SET() && !ZF_SET()) #define cond_S ( NF_SET()) #define cond_NS (!NF_SET()) #define cond_P ( PF_SET()) #define cond_NP (!PF_SET()) #define cond_L (((NF_SET()) ? 1 : 0) != ((VF_SET()) ? 1 : 0)) #define cond_NL (((NF_SET()) ? 1 : 0) == ((VF_SET()) ? 1 : 0)) #define cond_LE (((NF_SET()) ? 1 : 0) != ((VF_SET()) ? 1 : 0) || (ZF_SET())) #define cond_NLE (((NF_SET()) ? 1 : 0) == ((VF_SET()) ? 1 : 0) && (!ZF_SET())) #define opJ(condition) \ static int opJ ## condition(uint32_t fetchdat) \ { \ int8_t offset = (int8_t)getbytef(); \ CLOCK_CYCLES(timing_bnt); \ if (cond_ ## condition) \ { \ cpu_state.pc += offset; \ CLOCK_CYCLES_ALWAYS(timing_bt); \ CPU_BLOCK_END(); \ PREFETCH_RUN(timing_bt+timing_bnt, 2, -1, 0,0,0,0, 0); \ PREFETCH_FLUSH(); \ return 1; \ } \ PREFETCH_RUN(timing_bnt, 2, -1, 0,0,0,0, 0); \ return 0; \ } \ \ static int opJ ## condition ## _w(uint32_t fetchdat) \ { \ int16_t offset = (int16_t)getwordf(); \ CLOCK_CYCLES(timing_bnt); \ if (cond_ ## condition) \ { \ cpu_state.pc += offset; \ CLOCK_CYCLES_ALWAYS(timing_bt); \ CPU_BLOCK_END(); \ PREFETCH_RUN(timing_bt+timing_bnt, 3, -1, 0,0,0,0, 0); \ PREFETCH_FLUSH(); \ return 1; \ } \ PREFETCH_RUN(timing_bnt, 3, -1, 0,0,0,0, 0); \ return 0; \ } \ \ static int opJ ## condition ## _l(uint32_t fetchdat) \ { \ uint32_t offset = getlong(); if (cpu_state.abrt) return 1; \ CLOCK_CYCLES(timing_bnt); \ if (cond_ ## condition) \ { \ cpu_state.pc += offset; \ CLOCK_CYCLES_ALWAYS(timing_bt); \ CPU_BLOCK_END(); \ PREFETCH_RUN(timing_bt+timing_bnt, 5, -1, 0,0,0,0, 0); \ PREFETCH_FLUSH(); \ return 1; \ } \ PREFETCH_RUN(timing_bnt, 5, -1, 0,0,0,0, 0); \ return 0; \ } \ opJ(O) opJ(NO) opJ(B) opJ(NB) opJ(E) opJ(NE) opJ(BE) opJ(NBE) opJ(S) opJ(NS) opJ(P) opJ(NP) opJ(L) opJ(NL) opJ(LE) opJ(NLE) static int opLOOPNE_w(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); CX--; CLOCK_CYCLES((is486) ? 7 : 11); PREFETCH_RUN(11, 2, -1, 0,0,0,0, 0); if (CX && !ZF_SET()) { cpu_state.pc += offset; CPU_BLOCK_END(); PREFETCH_FLUSH(); return 1; } return 0; } static int opLOOPNE_l(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); ECX--; CLOCK_CYCLES((is486) ? 7 : 11); PREFETCH_RUN(11, 2, -1, 0,0,0,0, 0); if (ECX && !ZF_SET()) { cpu_state.pc += offset; CPU_BLOCK_END(); PREFETCH_FLUSH(); return 1; } return 0; } static int opLOOPE_w(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); CX--; CLOCK_CYCLES((is486) ? 7 : 11); PREFETCH_RUN(11, 2, -1, 0,0,0,0, 0); if (CX && ZF_SET()) { cpu_state.pc += offset; CPU_BLOCK_END(); PREFETCH_FLUSH(); return 1; } return 0; } static int opLOOPE_l(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); ECX--; CLOCK_CYCLES((is486) ? 7 : 11); PREFETCH_RUN(11, 2, -1, 0,0,0,0, 0); if (ECX && ZF_SET()) { cpu_state.pc += offset; CPU_BLOCK_END(); PREFETCH_FLUSH(); return 1; } return 0; } static int opLOOP_w(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); CX--; CLOCK_CYCLES((is486) ? 7 : 11); PREFETCH_RUN(11, 2, -1, 0,0,0,0, 0); if (CX) { cpu_state.pc += offset; CPU_BLOCK_END(); PREFETCH_FLUSH(); return 1; } return 0; } static int opLOOP_l(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); ECX--; CLOCK_CYCLES((is486) ? 7 : 11); PREFETCH_RUN(11, 2, -1, 0,0,0,0, 0); if (ECX) { cpu_state.pc += offset; CPU_BLOCK_END(); PREFETCH_FLUSH(); return 1; } return 0; } static int opJCXZ(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); CLOCK_CYCLES(5); if (!CX) { cpu_state.pc += offset; CLOCK_CYCLES(4); CPU_BLOCK_END(); PREFETCH_RUN(9, 2, -1, 0,0,0,0, 0); PREFETCH_FLUSH(); return 1; } PREFETCH_RUN(5, 2, -1, 0,0,0,0, 0); return 0; } static int opJECXZ(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); CLOCK_CYCLES(5); if (!ECX) { cpu_state.pc += offset; CLOCK_CYCLES(4); CPU_BLOCK_END(); PREFETCH_RUN(9, 2, -1, 0,0,0,0, 0); PREFETCH_FLUSH(); return 1; } PREFETCH_RUN(5, 2, -1, 0,0,0,0, 0); return 0; } static int opJMP_r8(uint32_t fetchdat) { int8_t offset = (int8_t)getbytef(); cpu_state.pc += offset; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 3 : 7); PREFETCH_RUN(7, 2, -1, 0,0,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opJMP_r16(uint32_t fetchdat) { int16_t offset = (int16_t)getwordf(); cpu_state.pc += offset; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 3 : 7); PREFETCH_RUN(7, 3, -1, 0,0,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opJMP_r32(uint32_t fetchdat) { int32_t offset = (int32_t)getlong(); if (cpu_state.abrt) return 1; cpu_state.pc += offset; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 3 : 7); PREFETCH_RUN(7, 5, -1, 0,0,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opJMP_far_a16(uint32_t fetchdat) { uint16_t addr = getwordf(); uint16_t seg = getword(); if (cpu_state.abrt) return 1; uint32_t oxpc = cpu_state.pc; cpu_state.pc = addr; loadcsjmp(seg, oxpc); CPU_BLOCK_END(); PREFETCH_RUN(11, 5, -1, 0,0,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opJMP_far_a32(uint32_t fetchdat) { uint32_t addr = getlong(); uint16_t seg = getword(); if (cpu_state.abrt) return 1; uint32_t oxpc = cpu_state.pc; cpu_state.pc = addr; loadcsjmp(seg, oxpc); CPU_BLOCK_END(); PREFETCH_RUN(11, 7, -1, 0,0,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opCALL_r16(uint32_t fetchdat) { int16_t addr = (int16_t)getwordf(); PUSH_W(cpu_state.pc); cpu_state.pc += addr; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 3 : 7); PREFETCH_RUN(7, 3, -1, 0,0,1,0, 0); PREFETCH_FLUSH(); return 0; } static int opCALL_r32(uint32_t fetchdat) { int32_t addr = getlong(); if (cpu_state.abrt) return 1; PUSH_L(cpu_state.pc); cpu_state.pc += addr; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 3 : 7); PREFETCH_RUN(7, 5, -1, 0,0,0,1, 0); PREFETCH_FLUSH(); return 0; } static int opRET_w(uint32_t fetchdat) { uint16_t ret; ret = POP_W(); if (cpu_state.abrt) return 1; cpu_state.pc = ret; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 5 : 10); PREFETCH_RUN(10, 1, -1, 1,0,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opRET_l(uint32_t fetchdat) { uint32_t ret; ret = POP_L(); if (cpu_state.abrt) return 1; cpu_state.pc = ret; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 5 : 10); PREFETCH_RUN(10, 1, -1, 0,1,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opRET_w_imm(uint32_t fetchdat) { uint16_t offset = getwordf(); uint16_t ret; ret = POP_W(); if (cpu_state.abrt) return 1; if (stack32) ESP += offset; else SP += offset; cpu_state.pc = ret; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 5 : 10); PREFETCH_RUN(10, 5, -1, 1,0,0,0, 0); PREFETCH_FLUSH(); return 0; } static int opRET_l_imm(uint32_t fetchdat) { uint16_t offset = getwordf(); uint32_t ret; ret = POP_L(); if (cpu_state.abrt) return 1; if (stack32) ESP += offset; else SP += offset; cpu_state.pc = ret; CPU_BLOCK_END(); CLOCK_CYCLES((is486) ? 5 : 10); PREFETCH_RUN(10, 5, -1, 0,1,0,0, 0); PREFETCH_FLUSH(); return 0; }