//DingusPPC - Prototype 5bf2 //Written by divingkatae //(c)2018-20 (theweirdo) //Please ask for permission //if you want to distribute this. //(divingkatae#1017 on Discord) // The Power-specific opcodes for the processor - ppcopcodes.cpp // Any shared opcodes are in ppcopcodes.cpp #include #include #include #include #include "ppcemumain.h" #include "ppcmemory.h" #include #include void power_abs(){ ppc_grab_regsda(); if (ppc_result_a == 0x80000000){ ppc_result_d = ppc_result_a; } else{ ppc_result_d = ppc_result_a & 0x7FFFFFFF; } ppc_store_result_regd(); } void power_absdot(){ ppc_grab_regsda(); if (ppc_result_a == 0x80000000){ ppc_result_d = ppc_result_a; } else{ ppc_result_d = ppc_result_a & 0x7FFFFFFF; } ppc_changecrf0(ppc_result_d); ppc_store_result_regd(); } void power_abso(){ ppc_grab_regsda(); if (ppc_result_a == 0x80000000){ ppc_result_d = ppc_result_a; ppc_state.ppc_spr[1] |= 0x40000000; } else{ ppc_result_d = ppc_result_a & 0x7FFFFFFF; } ppc_store_result_regd(); } void power_absodot(){ ppc_grab_regsda(); if (ppc_result_a == 0x80000000){ ppc_result_d = ppc_result_a; ppc_state.ppc_spr[1] |= 0x40000000; } else{ ppc_result_d = ppc_result_a & 0x7FFFFFFF; } ppc_changecrf0(ppc_result_d); ppc_store_result_regd(); } void power_clcs(){ ppc_grab_regsda(); switch(reg_a){ case 12: case 13: case 14: case 15: ppc_result_d = 65535; break; default: ppc_result_d = 0; } ppc_store_result_regd(); } void power_clcsdot(){ switch(reg_a){ case 12: case 13: case 14: case 15: ppc_result_d = 65535; break; default: ppc_result_d = 0; } ppc_changecrf0(ppc_result_d); printf("Does RC do anything here? (TODO) \n"); ppc_store_result_regd(); } void power_div(){ ppc_grab_regsdab(); ppc_result_d = (ppc_result_a | ppc_state.ppc_spr[0]) / ppc_result_b; ppc_state.ppc_spr[0] = (ppc_result_a | ppc_state.ppc_spr[0]) % ppc_result_b; ppc_store_result_regd(); } void power_divdot(){ ppc_result_d = (ppc_result_a | ppc_state.ppc_spr[0]) / ppc_result_b; ppc_state.ppc_spr[0] = (ppc_result_a | ppc_state.ppc_spr[0]) % ppc_result_b; } void power_divo(){ ppc_result_d = (ppc_result_a | ppc_state.ppc_spr[0]) / ppc_result_b; ppc_state.ppc_spr[0] = (ppc_result_a | ppc_state.ppc_spr[0]) % ppc_result_b; } void power_divodot(){ ppc_result_d = (ppc_result_a | ppc_state.ppc_spr[0]) / ppc_result_b; ppc_state.ppc_spr[0] = (ppc_result_a | ppc_state.ppc_spr[0]) % ppc_result_b; } void power_divs(){ ppc_grab_regsdab(); ppc_result_d = ppc_result_a / ppc_result_b; ppc_state.ppc_spr[0] =(ppc_result_a % ppc_result_b); ppc_store_result_regd(); } void power_divsdot(){ ppc_result_d = ppc_result_a / ppc_result_b; ppc_state.ppc_spr[0] =(ppc_result_a % ppc_result_b); } void power_divso(){ ppc_result_d = ppc_result_a / ppc_result_b; ppc_state.ppc_spr[0] =(ppc_result_a % ppc_result_b); } void power_divsodot(){ ppc_result_d = ppc_result_a / ppc_result_b; ppc_state.ppc_spr[0] =(ppc_result_a % ppc_result_b); } void power_doz(){ ppc_grab_regsdab(); if (((int32_t)ppc_result_a) > ((int32_t)ppc_result_b)){ ppc_result_d = 0; } else{ ppc_result_d = ~ppc_result_a + ppc_result_b + 1; } ppc_store_result_rega(); } void power_dozdot(){ ppc_grab_regsdab(); if (((int32_t)ppc_result_a) > ((int32_t)ppc_result_b)){ ppc_result_d = 0; } else{ ppc_result_d = ~ppc_result_a + ppc_result_b + 1; } ppc_changecrf0(ppc_result_d); ppc_store_result_rega(); } void power_dozo(){ if (((int32_t)ppc_result_a) > ((int32_t)ppc_result_b)){ ppc_result_d = 0; } else{ ppc_result_d = ~ppc_result_a + ppc_result_b + 1; } } void power_dozodot(){ if (((int32_t)ppc_result_a) > ((int32_t)ppc_result_b)){ ppc_result_d = 0; } else{ ppc_result_d = ~ppc_result_a + ppc_result_b + 1; } } void power_dozi(){ ppc_grab_regsdab(); if (((int32_t)ppc_result_a) > simm){ ppc_result_d = 0; } else{ ppc_result_d = ~ppc_result_a + simm + 1; } ppc_store_result_rega(); } void power_lscbx(){ ppc_grab_regsdab(); uint32_t bytes_copied = 0; bool match_found = false; uint32_t shift_amount = 0; uint8_t byte_compared = (uint8_t)((ppc_state.ppc_spr[1] & 0xFF00) >> 8); if ((ppc_state.ppc_spr[1] & 0x7f) == 0){ return; } uint32_t bytes_to_load = (ppc_state.ppc_spr[1] & 0x7f) + 1; ppc_effective_address = (reg_a == 0)?ppc_result_b:ppc_result_a + ppc_result_b; do{ ppc_effective_address++; bytes_to_load--; if (match_found == false){ switch(shift_amount){ case 0: address_quickgrab_translate(ppc_effective_address, 1); ppc_result_d = (ppc_result_d & 0x00FFFFFF) | (return_value << 24); ppc_store_result_regd(); break; case 1: address_quickgrab_translate(ppc_effective_address, 1); ppc_result_d = (ppc_result_d & 0xFF00FFFF) | (return_value << 16); ppc_store_result_regd(); break; case 2: address_quickgrab_translate(ppc_effective_address, 1); ppc_result_d = (ppc_result_d & 0xFFFF00FF) | (return_value << 8); ppc_store_result_regd(); break; case 3: address_quickgrab_translate(ppc_effective_address, 1); ppc_result_d = (ppc_result_d & 0xFFFFFF00) | return_value; ppc_store_result_regd(); break; } bytes_copied++; } if (((uint8_t)return_value) == byte_compared){ break; } return_value = 0; if (shift_amount == 3){ shift_amount = 0; reg_d = (reg_d + 1) & 0x1F; } else{ shift_amount++; } }while (bytes_to_load > 0); ppc_state.ppc_spr[1] = (ppc_state.ppc_spr[1] & 0xFFFFFF80) | bytes_copied; ppc_store_result_regd(); } void power_lscbxdot(){ printf("OOPS! Placeholder!!! \n"); } void power_maskg(){ ppc_grab_regssab(); uint32_t mask_start = ppc_result_d & 31; uint32_t mask_end = ppc_result_b & 31; uint32_t insert_mask = 0; if (mask_start < (mask_end + 1)){ for (uint32_t i = mask_start; i < mask_end; i++){ insert_mask |= (0x80000000 >> i); } } else if (mask_start == (mask_end + 1)){ insert_mask = 0xFFFFFFFF; } else{ insert_mask = 0xFFFFFFFF; for (uint32_t i = (mask_end + 1); i < (mask_start - 1); i++){ insert_mask &= (~(0x80000000 >> i)); } } ppc_result_a = insert_mask; ppc_store_result_rega(); } void power_maskgdot(){ ppc_grab_regssab(); uint32_t mask_start = ppc_result_d & 31; uint32_t mask_end = ppc_result_b & 31; uint32_t insert_mask = 0; if (mask_start < (mask_end + 1)){ for (uint32_t i = mask_start; i < mask_end; i++){ insert_mask |= (0x80000000 >> i); } } else if (mask_start == (mask_end + 1)){ insert_mask = 0xFFFFFFFF; } else{ insert_mask = 0xFFFFFFFF; for (uint32_t i = (mask_end + 1); i < (mask_start - 1); i++){ insert_mask &= (~(0x80000000 >> i)); } } ppc_result_a = insert_mask; ppc_store_result_rega(); } void power_maskir(){ ppc_grab_regssab(); uint32_t mask_insert = ppc_result_a; uint32_t insert_rot = 0x80000000; do{ if (ppc_result_b & insert_rot){ mask_insert &= ~insert_rot; mask_insert |= (ppc_result_d & insert_rot); } insert_rot = insert_rot>> 1; }while(insert_rot > 0); ppc_result_a = (ppc_result_d & ppc_result_b); ppc_store_result_rega(); } void power_maskirdot(){ ppc_grab_regssab(); uint32_t mask_insert = ppc_result_a; uint32_t insert_rot = 0x80000000; do{ if (ppc_result_b & insert_rot){ mask_insert &= ~insert_rot; mask_insert |= (ppc_result_d & insert_rot); } insert_rot = insert_rot>> 1; }while(insert_rot > 0); ppc_result_a = (ppc_result_d & ppc_result_b); ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_mul(){ ppc_grab_regsdab(); uint64_t product; product = ((uint64_t)ppc_result_a) * ((uint64_t)ppc_result_b); ppc_result_d = ((uint32_t)(product >> 32)); ppc_state.ppc_spr[0] = ((uint32_t)(product)); ppc_store_result_regd(); } void power_muldot(){ ppc_grab_regsdab(); uint64_t product; product = ((uint64_t)ppc_result_a) * ((uint64_t)ppc_result_b); ppc_result_d = ((uint32_t)(product >> 32)); ppc_state.ppc_spr[0] = ((uint32_t)(product)); ppc_changecrf0(ppc_result_d); ppc_store_result_regd(); } void power_mulo(){ uint64_t product; product = ((uint64_t)ppc_result_a) * ((uint64_t)ppc_result_b); ppc_result_d = ((uint32_t)(product >> 32)); ppc_state.ppc_spr[0] = ((uint32_t)(product)); } void power_mulodot(){ uint64_t product; product = ((uint64_t)ppc_result_a) * ((uint64_t)ppc_result_b); ppc_result_d = ((uint32_t)(product >> 32)); ppc_state.ppc_spr[0] = ((uint32_t)(product)); } void power_nabs(){ ppc_grab_regsda(); ppc_result_d = (0x80000000 | ppc_result_a); ppc_store_result_regd(); } void power_nabsdot(){ ppc_result_d = (0x80000000 | ppc_result_a); } void power_nabso(){ ppc_result_d = (0x80000000 | ppc_result_a); } void power_nabsodot(){ ppc_result_d = (0x80000000 | ppc_result_a); } void power_rlmi(){ ppc_grab_regssab(); rot_mb = (ppc_cur_instruction >> 6) & 31; rot_me = (ppc_cur_instruction >> 1) & 31; uint32_t rot_amt = ppc_result_b & 31; uint32_t insert_mask = 0; if (rot_mb < (rot_me + 1)){ for (uint32_t i = rot_mb; i < rot_me; i++){ insert_mask |= (0x80000000 >> i); } } else if (rot_mb == (rot_me + 1)){ insert_mask = 0xFFFFFFFF; } else{ insert_mask = 0xFFFFFFFF; for (uint32_t i = (rot_me + 1); i < (rot_mb - 1); i++){ insert_mask &= (~(0x80000000 >> i)); } } uint32_t step2 = (ppc_result_d << rot_amt) | (ppc_result_d >> rot_amt); ppc_result_a = step2 & insert_mask; ppc_store_result_rega(); } void power_rrib(){ ppc_grab_regssab(); if (ppc_result_d & 0x80000000){ ppc_result_a |= (0x80000000 >> ppc_result_b); } else{ ppc_result_a &= ~(0x80000000 >> ppc_result_b); } ppc_store_result_rega(); } void power_rribdot(){ ppc_grab_regssab(); if (ppc_result_d & 0x80000000){ ppc_result_a |= (0x80000000 >> ppc_result_b); } else{ ppc_result_a &= ~(0x80000000 >> ppc_result_b); } ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_sle(){ ppc_grab_regssa(); uint32_t insert_mask = 0; uint32_t rot_amt = ppc_result_b & 31; for (uint32_t i = 31; i > rot_amt; i--){ insert_mask |= (1 << i); } uint32_t insert_final = ((ppc_result_d << rot_amt) | (ppc_result_d >> (32 - rot_amt))); ppc_state.ppc_spr[0] = insert_final & insert_mask; ppc_result_a = insert_final & insert_mask; ppc_store_result_rega(); } void power_sledot(){ ppc_grab_regssa(); uint32_t insert_mask = 0; uint32_t rot_amt = ppc_result_b & 31; for (uint32_t i = 31; i > rot_amt; i--){ insert_mask |= (1 << i); } uint32_t insert_final = ((ppc_result_d << rot_amt) | (ppc_result_d >> (32 - rot_amt))); ppc_state.ppc_spr[0] = insert_final & insert_mask; ppc_result_a = insert_final & insert_mask; ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_sleq(){ ppc_grab_regssa(); uint32_t insert_mask = 0; uint32_t rot_amt = ppc_result_b & 31; for (uint32_t i = 31; i > rot_amt; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d << rot_amt) | (ppc_result_d >> (rot_amt - 31))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_store_result_rega(); } void power_sleqdot(){ ppc_grab_regssa(); uint32_t insert_mask = 0; uint32_t rot_amt = ppc_result_b & 31; for (uint32_t i = 31; i > rot_amt; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d << rot_amt) | (ppc_result_d >> (rot_amt - 31))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_sliq(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = (ppc_cur_instruction >> 11) & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d << rot_sh) | (ppc_result_d >> (rot_sh - 31))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end & insert_mask; ppc_state.ppc_spr[0] = insert_start; ppc_store_result_rega(); } void power_sliqdot(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = (ppc_cur_instruction >> 11) & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d << rot_sh) | (ppc_result_d >> (rot_sh - 31))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end & insert_mask; ppc_state.ppc_spr[0] = insert_start; ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_slliq(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = (ppc_cur_instruction >> 11) & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d << rot_sh) | (ppc_result_d >> (32 - rot_sh))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_store_result_rega(); } void power_slliqdot(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = (ppc_cur_instruction >> 11) & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d << rot_sh) | (ppc_result_d >> (32 - rot_sh))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_sllq(){ printf("OOPS! Placeholder!!! \n"); } void power_sllqdot(){ printf("OOPS! Placeholder!!! \n"); } void power_slq(){ printf("OOPS! Placeholder!!! \n"); } void power_slqdot(){ printf("OOPS! Placeholder!!! \n"); } void power_sraiq(){ printf("OOPS! Placeholder!!! \n"); } void power_sraiqdot(){ printf("OOPS! Placeholder!!! \n"); } void power_sraq(){ printf("OOPS! Placeholder!!! \n"); } void power_sraqdot(){ printf("OOPS! Placeholder!!! \n"); } void power_sre(){ ppc_grab_regssa(); uint32_t insert_mask = 0; uint32_t rot_amt = ppc_result_b & 31; for (uint32_t i = 31; i > rot_amt; i--){ insert_mask |= (1 << i); } uint32_t insert_final = ((ppc_result_d >> rot_amt) | (ppc_result_d << (32 - rot_amt))); ppc_state.ppc_spr[0] = insert_final & insert_mask; ppc_result_a = insert_final; ppc_store_result_rega(); } void power_sredot(){ ppc_grab_regssa(); uint32_t insert_mask = 0; uint32_t rot_amt = ppc_result_b & 31; for (uint32_t i = 31; i > rot_amt; i--){ insert_mask |= (1 << i); } uint32_t insert_final = ((ppc_result_d >> rot_amt) | (ppc_result_d << (32 - rot_amt))); ppc_state.ppc_spr[0] = insert_final & insert_mask; ppc_result_a = insert_final; ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_srea(){ printf("OOPS! Placeholder!!! \n"); } void power_sreadot(){ printf("OOPS! Placeholder!!! \n"); } void power_sreq(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = ppc_result_b & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d >> rot_sh) | (ppc_result_d << (32 - rot_sh))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_store_result_rega(); } void power_sreqdot(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = ppc_result_b & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d >> rot_sh) | (ppc_result_d << (32 - rot_sh))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_sriq(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = (ppc_cur_instruction >> 11) & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d >> rot_sh) | (ppc_result_d << (32 - rot_sh))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_store_result_rega(); } void power_sriqdot(){ ppc_grab_regssa(); uint32_t insert_mask = 0; rot_sh = (ppc_cur_instruction >> 11) & 31; for (uint32_t i = 31; i > rot_sh; i--){ insert_mask |= (1 << i); } uint32_t insert_start= ((ppc_result_d >> rot_sh) | (ppc_result_d << (32 - rot_sh))); uint32_t insert_end = ppc_state.ppc_spr[0]; for (int i = 0; i < 32; i++){ if (insert_mask & (1 << i)){ insert_end &= ~(1 << i); insert_end |= (insert_start & (1 << i)); } } ppc_result_a = insert_end; ppc_state.ppc_spr[0] = insert_start; ppc_changecrf0(ppc_result_a); ppc_store_result_rega(); } void power_srliq(){ printf("OOPS! Placeholder!!! \n"); } void power_srliqdot(){ printf("OOPS! Placeholder!!! \n"); } void power_srlq(){ printf("OOPS! Placeholder!!! \n"); } void power_srlqdot(){ printf("OOPS! Placeholder!!! \n"); } void power_srq(){ printf("OOPS! Placeholder!!! \n"); } void power_srqdot(){ printf("OOPS! Placeholder!!! \n"); }