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dingusppc/cpu/ppc/ppcopcodes.cpp

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/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-20 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
// General opcodes for the processor - ppcopcodes.cpp
#include "ppcemu.h"
#include "ppcmmu.h"
#include <array>
#include <cinttypes>
#include <cstring>
#include <iostream>
#include <stdexcept>
#include <stdio.h>
#include <stdlib.h>
#include <thirdparty/loguru/loguru.hpp>
#include <thread>
uint32_t crf_d;
uint32_t crf_s;
uint32_t reg_s;
uint32_t reg_d;
uint32_t reg_a;
uint32_t reg_b;
uint32_t reg_c; // used only for floating point multiplication operations
uint32_t xercon;
uint32_t cmp_c;
uint32_t crm;
uint32_t uimm;
uint32_t grab_sr;
uint32_t grab_inb; // This is for grabbing the number of immediate bytes for loading and storing
uint32_t ppc_to;
int32_t simm;
int32_t adr_li;
// Used for GP calcs
uint32_t ppc_result_a = 0;
uint32_t ppc_result_b = 0;
uint32_t ppc_result_c = 0;
uint32_t ppc_result_d = 0;
uint32_t strwrd_replace_value;
/**
Extract the registers desired and the values of the registers
This also takes the MSR into account, mainly to determine
what endian the numbers are to be stored in.
**/
// Storage and register retrieval functions for the integer functions.
void ppc_store_result_regd() {
ppc_state.gpr[reg_d] = ppc_result_d;
}
void ppc_store_result_rega() {
ppc_state.gpr[reg_a] = ppc_result_a;
}
void ppc_grab_regsdasimm() {
reg_d = (ppc_cur_instruction >> 21) & 31;
reg_a = (ppc_cur_instruction >> 16) & 31;
simm = (int32_t)((int16_t)((ppc_cur_instruction)&65535));
ppc_result_a = ppc_state.gpr[reg_a];
}
void ppc_grab_regsdauimm() {
reg_d = (ppc_cur_instruction >> 21) & 31;
reg_a = (ppc_cur_instruction >> 16) & 31;
uimm = (uint32_t)((uint16_t)((ppc_cur_instruction)&65535));
ppc_result_a = ppc_state.gpr[reg_a];
}
void ppc_grab_regsasimm() {
reg_a = (ppc_cur_instruction >> 16) & 31;
simm = (int32_t)((int16_t)(ppc_cur_instruction & 65535));
ppc_result_a = ppc_state.gpr[reg_a];
}
void ppc_grab_regssauimm() {
reg_s = (ppc_cur_instruction >> 21) & 31;
reg_a = (ppc_cur_instruction >> 16) & 31;
uimm = (uint32_t)((uint16_t)((ppc_cur_instruction)&65535));
ppc_result_d = ppc_state.gpr[reg_s];
ppc_result_a = ppc_state.gpr[reg_a];
}
void ppc_grab_regsdab() {
reg_d = (ppc_cur_instruction >> 21) & 31;
reg_a = (ppc_cur_instruction >> 16) & 31;
reg_b = (ppc_cur_instruction >> 11) & 31;
ppc_result_a = ppc_state.gpr[reg_a];
ppc_result_b = ppc_state.gpr[reg_b];
}
void ppc_grab_regssab() {
reg_s = (ppc_cur_instruction >> 21) & 31;
reg_a = (ppc_cur_instruction >> 16) & 31;
reg_b = (ppc_cur_instruction >> 11) & 31;
ppc_result_d = ppc_state.gpr[reg_s];
ppc_result_a = ppc_state.gpr[reg_a];
ppc_result_b = ppc_state.gpr[reg_b];
}
void ppc_grab_regssa() {
reg_s = (ppc_cur_instruction >> 21) & 31;
reg_a = (ppc_cur_instruction >> 16) & 31;
ppc_result_d = ppc_state.gpr[reg_s];
ppc_result_a = ppc_state.gpr[reg_a];
}
void ppc_grab_regssb() {
reg_s = (ppc_cur_instruction >> 21) & 31;
reg_b = (ppc_cur_instruction >> 11) & 31;
ppc_result_d = ppc_state.gpr[reg_s];
ppc_result_b = ppc_state.gpr[reg_b];
}
void ppc_grab_regsda() {
reg_d = (ppc_cur_instruction >> 21) & 31;
reg_a = (ppc_cur_instruction >> 16) & 31;
ppc_result_a = ppc_state.gpr[reg_a];
}
void ppc_grab_regsdb() {
reg_d = (ppc_cur_instruction >> 21) & 31;
reg_b = (ppc_cur_instruction >> 11) & 31;
ppc_result_b = ppc_state.gpr[reg_b];
}
// Affects CR Field 0 - For integer operations
void ppc_changecrf0(uint32_t set_result) {
ppc_state.cr &= 0x0FFFFFFFUL;
if (set_result == 0) {
ppc_state.cr |= 0x20000000UL;
} else {
if (set_result & 0x80000000) {
ppc_state.cr |= 0x80000000UL;
} else {
ppc_state.cr |= 0x40000000UL;
}
}
/* copy XER[SO] into CR0[SO]. */
ppc_state.cr |= (ppc_state.spr[SPR::XER] >> 3) & 0x10000000UL;
}
// Affects the XER register's Carry Bit
inline void ppc_carry(uint32_t a, uint32_t b) {
if (b < a) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
}
inline void ppc_carry_sub(uint32_t a, uint32_t b) {
if (b >= a) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
}
// Affects the XER register's SO and OV Bits
inline void ppc_setsoov(uint32_t a, uint32_t b, uint32_t d) {
if ((a ^ b) & (a ^ d) & 0x80000000UL) {
ppc_state.spr[SPR::XER] |= 0xC0000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xBFFFFFFFUL;
}
}
/**
The core functionality of this PPC emulation is within all of these void functions.
This is where the opcode tables in the ppcemumain.h come into play - reducing the number of
comparisons needed. This means loads of functions, but less CPU cycles needed to determine the
function (theoretically).
**/
void ppc_addi() {
ppc_grab_regsdasimm();
ppc_result_d = (reg_a == 0) ? simm : (ppc_result_a + simm);
ppc_store_result_regd();
}
void ppc_addic() {
ppc_grab_regsdasimm();
ppc_result_d = (ppc_result_a + simm);
ppc_carry(ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_addicdot() {
ppc_grab_regsdasimm();
ppc_result_d = (ppc_result_a + simm);
ppc_changecrf0(ppc_result_d);
ppc_carry(ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_addis() {
ppc_grab_regsdasimm();
ppc_result_d = (reg_a == 0) ? (simm << 16) : (ppc_result_a + (simm << 16));
ppc_store_result_regd();
}
void ppc_add() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_store_result_regd();
}
void ppc_adddot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
// addo + addodot
void ppc_addo() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_store_result_regd();
}
void ppc_addodot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_addc() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_carry(ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_addcdot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_carry(ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_addco() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_carry(ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_addcodot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_carry(ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_adde() {
ppc_grab_regsdab();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + ppc_result_b + xer_ca;
if ((ppc_result_d < ppc_result_a) || (xer_ca && (ppc_result_d == ppc_result_a))) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_addedot() {
ppc_grab_regsdab();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + ppc_result_b + xer_ca;
if ((ppc_result_d < ppc_result_a) || (xer_ca && (ppc_result_d == ppc_result_a))) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_addeo() {
ppc_grab_regsdab();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + ppc_result_b + xer_ca;
if ((ppc_result_d < ppc_result_a) || (xer_ca && (ppc_result_d == ppc_result_a))) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_store_result_regd();
}
void ppc_addeodot() {
ppc_grab_regsdab();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + ppc_result_b + xer_ca;
if ((ppc_result_d < ppc_result_a) || (xer_ca && (ppc_result_d == ppc_result_a))) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_addme() {
ppc_grab_regsda();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + xer_ca - 1;
if (((xer_ca - 1) < 0xFFFFFFFFUL) | (ppc_result_d < ppc_result_a)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_addmedot() {
ppc_grab_regsda();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + xer_ca - 1;
if (((xer_ca - 1) < 0xFFFFFFFFUL) | (ppc_result_d < ppc_result_a)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_addmeo() {
ppc_grab_regsda();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + xer_ca - 1;
ppc_setsoov(ppc_result_a, 0, ppc_result_d);
if (((xer_ca - 1) < 0xFFFFFFFFUL) | (ppc_result_d < ppc_result_a)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_addmeodot() {
ppc_grab_regsda();
uint32_t xer_ca = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + xer_ca - 1;
ppc_setsoov(ppc_result_a, 0, ppc_result_d);
ppc_changecrf0(ppc_result_d);
if (((xer_ca - 1) < 0xFFFFFFFFUL) | (ppc_result_d < ppc_result_a)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_addze() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
if (ppc_result_d < ppc_result_a) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_addzedot() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
if (ppc_result_d < ppc_result_a) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_addzeo() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
ppc_setsoov(ppc_result_a, 0xFFFFFFFFUL, ppc_result_d);
if (ppc_result_d < ppc_result_a) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_addzeodot() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
ppc_setsoov(ppc_result_a, 0xFFFFFFFFUL, ppc_result_d);
if (ppc_result_d < ppc_result_a) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subf() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_store_result_regd();
}
void ppc_subfdot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfo() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfodot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfc() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_carry_sub(ppc_result_a, ppc_result_b);
ppc_store_result_regd();
}
void ppc_subfcdot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_carry_sub(ppc_result_a, ppc_result_b);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfco() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry_sub(ppc_result_a, ppc_result_b);
ppc_store_result_regd();
}
void ppc_subfcodot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_b - ppc_result_a;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry_sub(ppc_result_a, ppc_result_b);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfic() {
ppc_grab_regsdasimm();
ppc_result_d = simm - ppc_result_a;
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfe() {
ppc_grab_regsdab();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + ppc_result_b + grab_xer;
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfedot() {
ppc_grab_regsdab();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + ppc_result_b + grab_xer;
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfeo() {
ppc_grab_regsdab();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + ppc_result_b + grab_xer;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfeodot() {
ppc_grab_regsdab();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + ppc_result_b + grab_xer;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfme() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + grab_xer - 1;
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfmedot() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + grab_xer - 1;
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfmeo() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + grab_xer - 1;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfmeodot() {
ppc_grab_regsda();
uint32_t grab_xer = !!(ppc_state.spr[SPR::XER] & 0x20000000);
ppc_result_d = ~ppc_result_a + grab_xer - 1;
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfze() {
ppc_grab_regsda();
ppc_result_d = ~ppc_result_a + (ppc_state.spr[SPR::XER] & 0x20000000);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfzedot() {
ppc_grab_regsda();
ppc_result_d = ~ppc_result_a + (ppc_state.spr[SPR::XER] & 0x20000000);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfzeo() {
ppc_grab_regsda();
ppc_result_d = ~ppc_result_a + (ppc_state.spr[SPR::XER] & 0x20000000);
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
void ppc_subfzeodot() {
ppc_grab_regsda();
ppc_result_d = ~ppc_result_a + (ppc_state.spr[SPR::XER] & 0x20000000);
ppc_setsoov(ppc_result_b, ppc_result_a, ppc_result_d);
ppc_carry(~ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_and() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d & ppc_result_b;
ppc_store_result_rega();
}
void ppc_anddot() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d & ppc_result_b;
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_andc() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d & ~(ppc_result_b);
ppc_store_result_rega();
}
void ppc_andcdot() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d & ~(ppc_result_b);
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_andidot() {
ppc_grab_regssauimm();
ppc_result_a = ppc_result_d & uimm;
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_andisdot() {
ppc_grab_regssauimm();
ppc_result_a = ppc_result_d & (uimm << 16);
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_nand() {
ppc_grab_regssab();
ppc_result_a = ~(ppc_result_d & ppc_result_b);
ppc_store_result_rega();
}
void ppc_nanddot() {
ppc_grab_regssab();
ppc_result_a = ~(ppc_result_d & ppc_result_b);
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_or() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d | ppc_result_b;
ppc_store_result_rega();
}
void ppc_ordot() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d | ppc_result_b;
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_orc() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d | ~(ppc_result_b);
ppc_store_result_rega();
}
void ppc_orcdot() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d | ~(ppc_result_b);
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_ori() {
ppc_grab_regssauimm();
ppc_result_a = ppc_result_d | uimm;
ppc_store_result_rega();
}
void ppc_oris() {
ppc_grab_regssauimm();
ppc_result_a = (uimm << 16) | ppc_result_d;
ppc_store_result_rega();
}
void ppc_eqv() {
ppc_grab_regssab();
ppc_result_a = ~(ppc_result_d ^ ppc_result_b);
ppc_store_result_rega();
}
void ppc_eqvdot() {
ppc_grab_regssab();
ppc_result_a = ~(ppc_result_d ^ ppc_result_b);
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_nor() {
ppc_grab_regssab();
ppc_result_a = ~(ppc_result_d | ppc_result_b);
ppc_store_result_rega();
}
void ppc_nordot() {
ppc_grab_regssab();
ppc_result_a = ~(ppc_result_d | ppc_result_b);
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_xor() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d ^ ppc_result_b;
ppc_store_result_rega();
}
void ppc_xordot() {
ppc_grab_regssab();
ppc_result_a = ppc_result_d ^ ppc_result_b;
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_xori() {
ppc_grab_regssauimm();
ppc_result_a = ppc_result_d ^ uimm;
ppc_store_result_rega();
}
void ppc_xoris() {
ppc_grab_regssauimm();
ppc_result_a = ppc_result_d ^ (uimm << 16);
ppc_store_result_rega();
}
void ppc_neg() {
ppc_grab_regsda();
ppc_result_d = ~(ppc_result_a) + 1;
ppc_store_result_regd();
}
void ppc_negdot() {
ppc_grab_regsda();
ppc_result_d = ~(ppc_result_a) + 1;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_nego() {
ppc_grab_regsda();
ppc_result_d = ~(ppc_result_a) + 1;
if (ppc_result_a == 0x80000000)
ppc_state.spr[SPR::XER] |= 0xc0000000;
else
ppc_state.spr[SPR::XER] &= 0xBFFFFFFF;
ppc_store_result_regd();
}
void ppc_negodot() {
ppc_grab_regsda();
ppc_result_d = ~(ppc_result_a) + 1;
if (ppc_result_a == 0x80000000)
ppc_state.spr[SPR::XER] |= 0xc0000000;
else
ppc_state.spr[SPR::XER] &= 0xBFFFFFFF;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_cntlzw() {
ppc_grab_regssa();
uint32_t lead = 0;
uint32_t bit_check = ppc_result_d;
#ifdef USE_GCC_BUILTINS
lead = __builtin_clz(bit_check);
#elif defined USE_VS_BUILTINS
lead = __lzcnt(bit_check);
#else
for (uint32_t mask = 0x80000000UL; mask; lead++, mask >>= 1) {
if (bit_check & mask)
break;
}
#endif
ppc_result_a = lead;
ppc_store_result_rega();
}
void ppc_cntlzwdot() {
ppc_grab_regssa();
uint32_t lead = 0;
uint32_t bit_check = ppc_result_d;
#ifdef USE_GCC_BUILTINS
lead = __builtin_clz(bit_check);
#elif defined USE_VS_BUILTINS
lead = __lzcnt(bit_check);
#else
for (uint32_t mask = 0x80000000UL; mask; lead++, mask >>= 1) {
if (bit_check & mask)
break;
}
#endif
ppc_result_a = lead;
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_mulhwu() {
ppc_grab_regsdab();
uint64_t product = (uint64_t)ppc_result_a * (uint64_t)ppc_result_b;
ppc_result_d = (uint32_t)(product >> 32);
ppc_store_result_regd();
}
void ppc_mulhwudot() {
ppc_grab_regsdab();
uint64_t product = (uint64_t)ppc_result_a * (uint64_t)ppc_result_b;
ppc_result_d = (uint32_t)(product >> 32);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_mulhw() {
ppc_grab_regsdab();
int64_t product = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
ppc_result_d = product >> 32;
ppc_store_result_regd();
}
void ppc_mulhwdot() {
ppc_grab_regsdab();
int64_t product = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
ppc_result_d = product >> 32;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_mullw() {
ppc_grab_regsdab();
int64_t product = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
ppc_result_d = (uint32_t)product;
ppc_store_result_regd();
}
void ppc_mullwdot() {
ppc_grab_regsdab();
int64_t product = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
ppc_result_d = (uint32_t)product;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_mullwo() {
ppc_grab_regsdab();
int64_t product = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
if (product != (int64_t)(int32_t)product) {
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else {
ppc_state.spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_result_d = (uint32_t)product;
ppc_store_result_regd();
}
void ppc_mullwodot() {
ppc_grab_regsdab();
int64_t product = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
if (product != (int64_t)(int32_t)product) {
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else {
ppc_state.spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_result_d = (uint32_t)product;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_mulli() {
ppc_grab_regsdasimm();
int64_t product = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)simm;
ppc_result_d = (uint32_t)product;
ppc_store_result_regd();
}
void ppc_divw() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* handle the "anything / 0" case */
ppc_result_d = (ppc_result_a & 0x80000000) ? -1 : 0; /* UNDOCUMENTED! */
} else if (ppc_result_a == 0x80000000UL && ppc_result_b == 0xFFFFFFFFUL) {
ppc_result_d = 0xFFFFFFFF;
} else { /* normal signed devision */
ppc_result_d = (int32_t)ppc_result_a / (int32_t)ppc_result_b;
}
ppc_store_result_regd();
}
void ppc_divwdot() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* handle the "anything / 0" case */
ppc_result_d = (ppc_result_a & 0x80000000) ? -1 : 0; /* UNDOCUMENTED! */
} else if (ppc_result_a == 0x80000000UL && ppc_result_b == 0xFFFFFFFFUL) {
ppc_result_d = 0xFFFFFFFF;
} else { /* normal signed devision */
ppc_result_d = (int32_t)ppc_result_a / (int32_t)ppc_result_b;
}
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_divwo() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* handle the "anything / 0" case */
ppc_result_d = (ppc_result_a & 0x80000000) ? -1 : 0; /* UNDOCUMENTED! */
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else if (ppc_result_a == 0x80000000UL && ppc_result_b == 0xFFFFFFFFUL) {
ppc_result_d = 0xFFFFFFFF;
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else { /* normal signed devision */
ppc_result_d = (int32_t)ppc_result_a / (int32_t)ppc_result_b;
ppc_state.spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_divwodot() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* handle the "anything / 0" case */
ppc_result_d = (ppc_result_a & 0x80000000) ? -1 : 0; /* UNDOCUMENTED! */
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else if (ppc_result_a == 0x80000000UL && ppc_result_b == 0xFFFFFFFFUL) {
ppc_result_d = 0xFFFFFFFF;
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else { /* normal signed devision */
ppc_result_d = (int32_t)ppc_result_a / (int32_t)ppc_result_b;
ppc_state.spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_divwu() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* division by zero */
ppc_result_d = 0;
} else {
ppc_result_d = ppc_result_a / ppc_result_b;
}
ppc_store_result_regd();
}
void ppc_divwudot() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* division by zero */
ppc_result_d = 0;
ppc_state.cr |= 0x20000000;
} else {
ppc_result_d = ppc_result_a / ppc_result_b;
ppc_changecrf0(ppc_result_d);
}
ppc_store_result_regd();
}
void ppc_divwuo() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* division by zero */
ppc_result_d = 0;
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else {
ppc_result_d = ppc_result_a / ppc_result_b;
ppc_state.spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_store_result_regd();
}
void ppc_divwuodot() {
ppc_grab_regsdab();
if (!ppc_result_b) { /* division by zero */
ppc_result_d = 0;
ppc_state.spr[SPR::XER] |= 0xC0000000;
} else {
ppc_result_d = ppc_result_a / ppc_result_b;
ppc_state.spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
// Value shifting
void ppc_slw() {
ppc_grab_regssab();
if (ppc_result_b & 0x20) {
ppc_result_a = 0;
} else {
ppc_result_a = ppc_result_d << (ppc_result_b & 0x1F);
}
ppc_store_result_rega();
}
void ppc_slwdot() {
ppc_grab_regssab();
if (ppc_result_b & 0x20) {
ppc_result_a = 0;
} else {
ppc_result_a = ppc_result_d << (ppc_result_b & 0x1F);
}
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_srw() {
ppc_grab_regssab();
if (ppc_result_b & 0x20) {
ppc_result_a = 0;
} else {
ppc_result_a = ppc_result_d >> (ppc_result_b & 0x1F);
}
ppc_store_result_rega();
}
void ppc_srwdot() {
ppc_grab_regssab();
if (ppc_result_b & 0x20) {
ppc_result_a = 0;
} else {
ppc_result_a = ppc_result_d >> (ppc_result_b & 0x1F);
}
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_sraw() {
ppc_grab_regssab();
if (ppc_result_b & 0x20) {
ppc_result_a = (int32_t)ppc_result_d >> 31;
ppc_state.spr[SPR::XER] |= (ppc_result_a & 1) << 29;
} else {
uint32_t shift = ppc_result_b & 0x1F;
uint32_t mask = (1 << shift) - 1;
ppc_result_a = (int32_t)ppc_result_d >> shift;
if ((ppc_result_d & 0x80000000UL) && (ppc_result_d & mask)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
}
ppc_store_result_rega();
}
void ppc_srawdot() {
ppc_grab_regssab();
if (ppc_result_b & 0x20) {
ppc_result_a = (int32_t)ppc_result_d >> 31;
ppc_state.spr[SPR::XER] |= (ppc_result_a & 1) << 29;
} else {
uint32_t shift = ppc_result_b & 0x1F;
uint32_t mask = (1 << shift) - 1;
ppc_result_a = (int32_t)ppc_result_d >> shift;
if ((ppc_result_d & 0x80000000UL) && (ppc_result_d & mask)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
}
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_srawi() {
ppc_grab_regssa();
unsigned shift = (ppc_cur_instruction >> 11) & 0x1F;
uint32_t mask = (1 << shift) - 1;
ppc_result_a = (int32_t)ppc_result_d >> shift;
if ((ppc_result_d & 0x80000000UL) && (ppc_result_d & mask)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_store_result_rega();
}
void ppc_srawidot() {
ppc_grab_regssa();
unsigned shift = (ppc_cur_instruction >> 11) & 0x1F;
uint32_t mask = (1 << shift) - 1;
ppc_result_a = (int32_t)ppc_result_d >> shift;
if ((ppc_result_d & 0x80000000UL) && (ppc_result_d & mask)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
/** mask generator for rotate and shift instructions (§ 4.2.1.4 PowerpC PEM) */
static inline uint32_t rot_mask(unsigned rot_mb, unsigned rot_me) {
uint32_t m1 = 0xFFFFFFFFUL >> rot_mb;
uint32_t m2 = 0xFFFFFFFFUL << (31 - rot_me);
return ((rot_mb <= rot_me) ? m2 & m1 : m1 | m2);
}
void ppc_rlwimi() {
ppc_grab_regssa();
unsigned rot_sh = (ppc_cur_instruction >> 11) & 31;
unsigned rot_mb = (ppc_cur_instruction >> 6) & 31;
unsigned rot_me = (ppc_cur_instruction >> 1) & 31;
uint32_t mask = rot_mask(rot_mb, rot_me);
uint32_t r = ((ppc_result_d << rot_sh) | (ppc_result_d >> (32 - rot_sh)));
ppc_result_a = (ppc_result_a & ~mask) | (r & mask);
if ((ppc_cur_instruction & 0x01) == 1) {
ppc_changecrf0(ppc_result_a);
}
ppc_store_result_rega();
}
void ppc_rlwinm() {
ppc_grab_regssa();
unsigned rot_sh = (ppc_cur_instruction >> 11) & 31;
unsigned rot_mb = (ppc_cur_instruction >> 6) & 31;
unsigned rot_me = (ppc_cur_instruction >> 1) & 31;
uint32_t mask = rot_mask(rot_mb, rot_me);
uint32_t r = ((ppc_result_d << rot_sh) | (ppc_result_d >> (32 - rot_sh)));
ppc_result_a = r & mask;
if ((ppc_cur_instruction & 0x01) == 1) {
ppc_changecrf0(ppc_result_a);
}
ppc_store_result_rega();
}
void ppc_rlwnm() {
ppc_grab_regssab();
unsigned rot_mb = (ppc_cur_instruction >> 6) & 31;
unsigned rot_me = (ppc_cur_instruction >> 1) & 31;
uint32_t mask = rot_mask(rot_mb, rot_me);
uint32_t r = ((ppc_result_d << ppc_result_b) | (ppc_result_d >> (32 - ppc_result_b)));
ppc_result_a = r & mask;
if ((ppc_cur_instruction & 0x01) == 1) {
ppc_changecrf0(ppc_result_a);
}
ppc_store_result_rega();
}
void ppc_mfcr() {
reg_d = (ppc_cur_instruction >> 21) & 31;
ppc_state.gpr[reg_d] = ppc_state.cr;
}
void ppc_mtsr() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
if ((ppc_state.msr & 0x4000) == 0) {
reg_s = (ppc_cur_instruction >> 21) & 31;
grab_sr = (ppc_cur_instruction >> 16) & 15;
ppc_state.sr[grab_sr] = ppc_state.gpr[reg_s];
}
}
void ppc_mtsrin() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
if ((ppc_state.msr & 0x4000) == 0) {
ppc_grab_regssb();
grab_sr = ppc_result_b >> 28;
ppc_state.sr[grab_sr] = ppc_result_d;
}
}
void ppc_mfsr() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
if ((ppc_state.msr & 0x4000) == 0) {
reg_d = (ppc_cur_instruction >> 21) & 31;
grab_sr = (ppc_cur_instruction >> 16) & 15;
ppc_state.gpr[reg_d] = ppc_state.sr[grab_sr];
}
}
void ppc_mfsrin() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
if ((ppc_state.msr & 0x4000) == 0) {
ppc_grab_regsdb();
grab_sr = ppc_result_b >> 28;
ppc_state.gpr[reg_d] = ppc_state.sr[grab_sr];
}
}
void ppc_mfmsr() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
if (ppc_state.msr & 0x4000) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x00040000);
}
reg_d = (ppc_cur_instruction >> 21) & 31;
ppc_state.gpr[reg_d] = ppc_state.msr;
}
void ppc_mtmsr() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
if (ppc_state.msr & 0x4000) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x00040000);
}
reg_s = (ppc_cur_instruction >> 21) & 31;
ppc_state.msr = ppc_state.gpr[reg_s];
}
void ppc_mfspr() {
uint32_t ref_spr = (((ppc_cur_instruction >> 11) & 31) << 5) | ((ppc_cur_instruction >> 16) & 31);
#ifdef PROFILER
if (ref_spr > 31) {
supervisor_inst_num++;
}
#endif
reg_d = (ppc_cur_instruction >> 21) & 31;
ppc_state.gpr[reg_d] = ppc_state.spr[ref_spr];
}
void ppc_mtspr() {
uint32_t ref_spr = (((ppc_cur_instruction >> 11) & 31) << 5) | ((ppc_cur_instruction >> 16) & 31);
reg_s = (ppc_cur_instruction >> 21) & 31;
#ifdef PROFILER
if (ref_spr > 31) {
supervisor_inst_num++;
}
#endif
if (ref_spr != 287) {
ppc_state.spr[ref_spr] = ppc_state.gpr[reg_s];
}
switch (ref_spr) {
// Mirror the TBRs in the SPR range to the user-mode TBRs.
case 284:
timebase_counter = (timebase_counter & 0xFFFFFFFF00000000ULL) + ppc_state.gpr[reg_s];
break;
case 285:
timebase_counter = (timebase_counter & 0x00000000FFFFFFFFULL) +
(((uint64_t)(ppc_state.gpr[reg_s])) << 32);
break;
case 528:
case 529:
case 530:
case 531:
case 532:
case 533:
case 534:
case 535:
ibat_update(ref_spr);
break;
case 536:
case 537:
case 538:
case 539:
case 540:
case 541:
case 542:
case 543:
dbat_update(ref_spr);
}
}
void ppc_mftb() {
uint32_t ref_spr = (((ppc_cur_instruction >> 11) & 31) << 5) | ((ppc_cur_instruction >> 16) & 31);
reg_d = (ppc_cur_instruction >> 21) & 31;
switch (ref_spr) {
case 268:
ppc_state.gpr[reg_d] = timebase_counter & 0xFFFFFFFFUL;
break;
case 269:
ppc_state.gpr[reg_d] = (timebase_counter >> 32) & 0xFFFFFFFFUL;
break;
default:
std::cout << "Invalid TBR access attempted!" << std::endl;
}
}
void ppc_mtcrf() {
uint32_t cr_mask = 0;
ppc_grab_regssa();
crm = ((ppc_cur_instruction >> 12) & 255);
// check this
cr_mask += (crm & 128) ? 0xF0000000 : 0x00000000;
cr_mask += (crm & 64) ? 0x0F000000 : 0x00000000;
cr_mask += (crm & 32) ? 0x00F00000 : 0x00000000;
cr_mask += (crm & 16) ? 0x000F0000 : 0x00000000;
cr_mask += (crm & 8) ? 0x0000F000 : 0x00000000;
cr_mask += (crm & 4) ? 0x00000F00 : 0x00000000;
cr_mask += (crm & 2) ? 0x000000F0 : 0x00000000;
cr_mask += (crm & 1) ? 0x0000000F : 0x00000000;
ppc_state.cr = (ppc_result_d & cr_mask) | (ppc_state.cr & ~(cr_mask));
}
void ppc_mcrxr() {
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_state.cr = (ppc_state.cr & ~(0xF0000000UL >> crf_d)) |
((ppc_state.spr[SPR::XER] & 0xF0000000UL) >> crf_d);
ppc_state.spr[SPR::XER] &= 0x0FFFFFFF;
}
void ppc_extsb() {
ppc_grab_regssa();
ppc_result_d = ppc_result_d & 0xFF;
ppc_result_a = (ppc_result_d < 0x80) ? (ppc_result_d & 0x000000FF)
: (0xFFFFFF00UL | (ppc_result_d & 0x000000FF));
ppc_store_result_rega();
}
void ppc_extsbdot() {
ppc_grab_regssa();
ppc_result_d = ppc_result_d & 0xFF;
ppc_result_a = (ppc_result_d < 0x80) ? (ppc_result_d & 0x000000FF)
: (0xFFFFFF00UL | (ppc_result_d & 0x000000FF));
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
void ppc_extsh() {
ppc_grab_regssa();
ppc_result_d = ppc_result_d & 0xFFFF;
ppc_result_a = (ppc_result_d < 0x8000) ? (ppc_result_d & 0x0000FFFF)
: (0xFFFF0000UL | (ppc_result_d & 0x0000FFFF));
ppc_store_result_rega();
}
void ppc_extshdot() {
ppc_grab_regssa();
ppc_result_d = ppc_result_d & 0xFFFF;
ppc_result_a = (ppc_result_d < 0x8000) ? (ppc_result_d & 0x0000FFFF)
: (0xFFFF0000UL | (ppc_result_d & 0x0000FFFF));
ppc_changecrf0(ppc_result_a);
ppc_store_result_rega();
}
// Branching Instructions
// The last two bytes of the instruction are used for determining how the branch happens.
// The middle 24 bytes are the 24-bit address to use for branching to.
void ppc_b() {
uint32_t quick_test = (ppc_cur_instruction & 0x03FFFFFC);
adr_li = (quick_test < 0x2000000) ? quick_test : (0xFC000000UL + quick_test);
ppc_next_instruction_address = (uint32_t)(ppc_state.pc + adr_li);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
void ppc_bl() {
uint32_t quick_test = (ppc_cur_instruction & 0x03FFFFFC);
adr_li = (quick_test < 0x2000000) ? quick_test : (0xFC000000UL + quick_test);
ppc_next_instruction_address = (uint32_t)(ppc_state.pc + adr_li);
ppc_state.spr[SPR::LR] = (uint32_t)(ppc_state.pc + 4);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
void ppc_ba() {
uint32_t quick_test = (ppc_cur_instruction & 0x03FFFFFC);
adr_li = (quick_test < 0x2000000) ? quick_test : (0xFC000000UL + quick_test);
ppc_next_instruction_address = adr_li;
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
void ppc_bla() {
uint32_t quick_test = (ppc_cur_instruction & 0x03FFFFFC);
adr_li = (quick_test < 0x2000000) ? quick_test : (0xFC000000UL + quick_test);
ppc_next_instruction_address = adr_li;
ppc_state.spr[SPR::LR] = ppc_state.pc + 4;
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
void ppc_bc() {
uint32_t ctr_ok;
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
}
ctr_ok = (br_bo & 0x04) || ((ppc_state.spr[SPR::CTR] != 0) == !(br_bo & 0x02));
cnd_ok = (br_bo & 0x10) || (!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = (ppc_state.pc + br_bd);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
}
void ppc_bca() {
uint32_t ctr_ok;
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
}
ctr_ok = (br_bo & 0x04) || ((ppc_state.spr[SPR::CTR] != 0) == !(br_bo & 0x02));
cnd_ok = (br_bo & 0x10) || (!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = br_bd;
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
}
void ppc_bcl() {
uint32_t ctr_ok;
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
}
ctr_ok = (br_bo & 0x04) || ((ppc_state.spr[SPR::CTR] != 0) == !(br_bo & 0x02));
cnd_ok = (br_bo & 0x10) || (!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = (ppc_state.pc + br_bd);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
ppc_state.spr[SPR::LR] = ppc_state.pc + 4;
}
void ppc_bcla() {
uint32_t ctr_ok;
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
}
ctr_ok = (br_bo & 0x04) || ((ppc_state.spr[SPR::CTR] != 0) == !(br_bo & 0x02));
cnd_ok = (br_bo & 0x10) || (!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = br_bd;
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
ppc_state.spr[SPR::LR] = ppc_state.pc + 4;
}
void ppc_bcctr() {
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
uint32_t cnd_ok = (br_bo & 0x10) ||
(!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (cnd_ok) {
ppc_next_instruction_address = (ppc_state.spr[SPR::CTR] & 0xFFFFFFFCUL);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
}
void ppc_bcctrl() {
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
uint32_t cnd_ok = (br_bo & 0x10) ||
(!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (cnd_ok) {
ppc_next_instruction_address = (ppc_state.spr[SPR::CTR] & 0xFFFFFFFCUL);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
ppc_state.spr[SPR::LR] = ppc_state.pc + 4;
}
void ppc_bclr() {
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
uint32_t ctr_ok;
uint32_t cnd_ok;
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
}
ctr_ok = (br_bo & 0x04) || ((ppc_state.spr[SPR::CTR] != 0) == !(br_bo & 0x02));
cnd_ok = (br_bo & 0x10) || (!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = (ppc_state.spr[SPR::LR] & 0xFFFFFFFCUL);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
}
void ppc_bclrl() {
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
uint32_t ctr_ok;
uint32_t cnd_ok;
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
}
ctr_ok = (br_bo & 0x04) || ((ppc_state.spr[SPR::CTR] != 0) == !(br_bo & 0x02));
cnd_ok = (br_bo & 0x10) || (!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = (ppc_state.spr[SPR::LR] & 0xFFFFFFFCUL);
grab_branch = 1;
bb_kind = BB_end_kind::BB_BRANCH;
}
ppc_state.spr[SPR::LR] = ppc_state.pc + 4;
}
// Compare Instructions
void ppc_cmp() {
#ifdef CHECK_INVALID
if (ppc_cur_instruction & 0x200000) {
LOG_F(WARNING, "Invalid CMP instruction form (L=1)!\n");
return;
}
#endif
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_grab_regssab();
xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
cmp_c = (((int32_t)ppc_result_a) == ((int32_t)ppc_result_b))
? 0x20000000UL
: (((int32_t)ppc_result_a) > ((int32_t)ppc_result_b)) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
void ppc_cmpi() {
#ifdef CHECK_INVALID
if (ppc_cur_instruction & 0x200000) {
LOG_F(WARNING, "Invalid CMPI instruction form (L=1)!\n");
return;
}
#endif
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_grab_regsasimm();
xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
cmp_c = (((int32_t)ppc_result_a) == simm)
? 0x20000000UL
: (((int32_t)ppc_result_a) > simm) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
void ppc_cmpl() {
#ifdef CHECK_INVALID
if (ppc_cur_instruction & 0x200000) {
LOG_F(WARNING, "Invalid CMPL instruction form (L=1)!\n");
return;
}
#endif
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_grab_regssab();
xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
cmp_c = (ppc_result_a == ppc_result_b)
? 0x20000000UL
: (ppc_result_a > ppc_result_b) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
void ppc_cmpli() {
#ifdef CHECK_INVALID
if (ppc_cur_instruction & 0x200000) {
LOG_F(WARNING, "Invalid CMPLI instruction form (L=1)!\n");
return;
}
#endif
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_grab_regssauimm();
xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
cmp_c = (ppc_result_a == uimm) ? 0x20000000UL
: (ppc_result_a > uimm) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
// Condition Register Changes
void ppc_crand() {
ppc_grab_regsdab();
if ((ppc_state.cr & (0x80000000UL >> reg_a)) && (ppc_state.cr & (0x80000000UL >> reg_b))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crandc() {
ppc_grab_regsdab();
if ((ppc_state.cr & (0x80000000UL >> reg_a)) && !(ppc_state.cr & (0x80000000UL >> reg_b))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_creqv() {
ppc_grab_regsdab();
if (!((ppc_state.cr & (0x80000000UL >> reg_a)) ^ (ppc_state.cr & (0x80000000UL >> reg_b)))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crnand() {
ppc_grab_regsdab();
if (!((ppc_state.cr & (0x80000000UL >> reg_a)) && (ppc_state.cr & (0x80000000UL >> reg_b)))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crnor() {
ppc_grab_regsdab();
if (!((ppc_state.cr & (0x80000000UL >> reg_a)) || (ppc_state.cr & (0x80000000UL >> reg_b)))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_cror() {
ppc_grab_regsdab();
if ((ppc_state.cr & (0x80000000UL >> reg_a)) || (ppc_state.cr & (0x80000000UL >> reg_b))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crorc() {
ppc_grab_regsdab();
if ((ppc_state.cr & (0x80000000UL >> reg_a)) || !(ppc_state.cr & (0x80000000UL >> reg_b))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crxor() {
ppc_grab_regsdab();
if ((ppc_state.cr & (0x80000000UL >> reg_a)) ^ (ppc_state.cr & (0x80000000UL >> reg_b))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
}
}
// Processor MGMT Fns.
void ppc_rfi() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
uint32_t new_srr1_val = (ppc_state.spr[SPR::SRR1] & 0x87C0FF73UL);
uint32_t new_msr_val = (ppc_state.msr & ~(0x87C0FF73UL));
ppc_state.msr = (new_msr_val | new_srr1_val) & 0xFFFBFFFFUL;
ppc_next_instruction_address = ppc_state.spr[SPR::SRR0] & 0xFFFFFFFCUL;
grab_return = true;
bb_kind = BB_end_kind::BB_RFI;
}
void ppc_sc() {
ppc_exception_handler(Except_Type::EXC_SYSCALL, 0x20000);
}
void ppc_tw() {
reg_a = (ppc_cur_instruction >> 11) & 31;
reg_b = (ppc_cur_instruction >> 16) & 31;
ppc_to = (ppc_cur_instruction >> 21) & 31;
if ((((int32_t)ppc_state.gpr[reg_a] < (int32_t)ppc_state.gpr[reg_b]) & (ppc_to & 0x10)) ||
(((int32_t)ppc_state.gpr[reg_a] > (int32_t)ppc_state.gpr[reg_b]) & (ppc_to & 0x08)) ||
(((int32_t)ppc_state.gpr[reg_a] == (int32_t)ppc_state.gpr[reg_b]) & (ppc_to & 0x04)) ||
((ppc_state.gpr[reg_a] < ppc_state.gpr[reg_b]) & (ppc_to & 0x02)) ||
((ppc_state.gpr[reg_a] > ppc_state.gpr[reg_b]) & (ppc_to & 0x01))) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_twi() {
simm = (int32_t)((int16_t)((ppc_cur_instruction)&0xFFFF));
reg_a = (ppc_cur_instruction >> 16) & 0x1F;
ppc_to = (ppc_cur_instruction >> 21) & 0x1F;
if ((((int32_t)ppc_state.gpr[reg_a] < simm) && (ppc_to & 0x10)) ||
(((int32_t)ppc_state.gpr[reg_a] > simm) && (ppc_to & 0x08)) ||
(((int32_t)ppc_state.gpr[reg_a] == simm) && (ppc_to & 0x04)) ||
((ppc_state.gpr[reg_a] < (uint32_t)simm) && (ppc_to & 0x02)) ||
((ppc_state.gpr[reg_a] > (uint32_t)simm) && (ppc_to & 0x01))) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_eieio() {
/* placeholder */
}
void ppc_isync() {
/* placeholder */
}
void ppc_sync() {
/* placeholder */
}
void ppc_icbi() {
/* placeholder */
}
void ppc_dcbf() {
/* placeholder */
}
void ppc_dcbi() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
/* placeholder */
}
void ppc_dcbst() {
/* placeholder */
}
void ppc_dcbt() {
// Not needed, the HDI reg is touched to no-op this instruction.
return;
}
void ppc_dcbtst() {
// Not needed, the HDI reg is touched to no-op this instruction.
return;
}
void ppc_dcbz() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
if (!(ppc_state.pc & 32) && (ppc_state.pc < 0xFFFFFFE0UL)) {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
mem_write_qword(ppc_effective_address, 0);
mem_write_qword((ppc_effective_address + 8), 0);
mem_write_qword((ppc_effective_address + 16), 0);
mem_write_qword((ppc_effective_address + 24), 0);
} else {
ppc_exception_handler(Except_Type::EXC_ALIGNMENT, 0x00000);
}
}
// Integer Load and Store Functions
void ppc_stb() {
ppc_grab_regssa();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
mem_write_byte(ppc_effective_address, ppc_result_d);
}
void ppc_stbx() {
ppc_grab_regssab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
mem_write_byte(ppc_effective_address, ppc_result_d);
}
void ppc_stbu() {
ppc_grab_regssa();
if (reg_a != 0) {
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += ppc_result_a;
mem_write_byte(ppc_effective_address, ppc_result_d);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_stbux() {
ppc_grab_regssab();
if (reg_a != 0) {
ppc_effective_address = ppc_result_a + ppc_result_b;
mem_write_byte(ppc_effective_address, ppc_result_d);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_sth() {
ppc_grab_regssa();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
mem_write_word(ppc_effective_address, ppc_result_d);
}
void ppc_sthu() {
ppc_grab_regssa();
if (reg_a != 0) {
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += ppc_result_a;
mem_write_word(ppc_effective_address, ppc_result_d);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_sthux() {
ppc_grab_regssab();
if (reg_a != 0) {
ppc_effective_address = ppc_result_a + ppc_result_b;
mem_write_word(ppc_effective_address, ppc_result_d);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_sthx() {
ppc_grab_regssab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
mem_write_word(ppc_effective_address, ppc_result_d);
}
void ppc_sthbrx() {
ppc_grab_regssab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_result_d = (uint32_t)(BYTESWAP_16((uint16_t)ppc_result_d));
mem_write_word(ppc_effective_address, ppc_result_d);
}
void ppc_stw() {
ppc_grab_regssa();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
mem_write_dword(ppc_effective_address, ppc_result_d);
}
void ppc_stwx() {
ppc_grab_regssab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
mem_write_dword(ppc_effective_address, ppc_result_d);
}
void ppc_stwcx() {
// PLACEHOLDER CODE FOR STWCX - We need to check for reserve memory
ppc_grab_regssab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
if (ppc_state.reserve) {
mem_write_dword(ppc_effective_address, ppc_result_d);
ppc_state.cr |= (ppc_state.spr[SPR::XER] & 0x80000000) ? 0x30000000 : 0x20000000;
ppc_state.reserve = false;
} else {
ppc_state.cr |= (ppc_state.spr[SPR::XER] & 0x80000000) ? 0x10000000 : 0;
}
}
void ppc_stwu() {
ppc_grab_regssa();
if (reg_a != 0) {
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += ppc_result_a;
mem_write_dword(ppc_effective_address, ppc_result_d);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_stwux() {
ppc_grab_regssab();
if (reg_a != 0) {
ppc_effective_address = ppc_result_a + ppc_result_b;
mem_write_dword(ppc_effective_address, ppc_result_d);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_stwbrx() {
ppc_grab_regssab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_result_d = BYTESWAP_32(ppc_result_d);
mem_write_dword(ppc_effective_address, ppc_result_d);
}
void ppc_stmw() {
ppc_grab_regssa();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
/* what should we do if EA is unaligned? */
if (ppc_effective_address & 3) {
ppc_exception_handler(Except_Type::EXC_ALIGNMENT, 0x00000);
}
for (; reg_s <= 31; reg_s++) {
mem_write_dword(ppc_effective_address, ppc_state.gpr[reg_s]);
ppc_effective_address += 4;
}
}
void ppc_lbz() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
ppc_result_d = mem_grab_byte(ppc_effective_address);
ppc_store_result_regd();
}
void ppc_lbzu() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
if ((reg_a != reg_d) || reg_a != 0) {
ppc_effective_address += ppc_result_a;
ppc_result_d = mem_grab_byte(ppc_effective_address);
ppc_result_a = ppc_effective_address;
ppc_store_result_regd();
ppc_store_result_rega();
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_lbzx() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_result_d = mem_grab_byte(ppc_effective_address);
ppc_store_result_regd();
}
void ppc_lbzux() {
ppc_grab_regsdab();
if ((reg_a != reg_d) || reg_a != 0) {
ppc_effective_address = ppc_result_a + ppc_result_b;
ppc_result_d = mem_grab_byte(ppc_effective_address);
ppc_result_a = ppc_effective_address;
ppc_store_result_regd();
ppc_store_result_rega();
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_lhz() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
ppc_result_d = mem_grab_word(ppc_effective_address);
ppc_store_result_regd();
}
void ppc_lhzu() {
ppc_grab_regsda();
if ((reg_a != reg_d) || reg_a != 0) {
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += ppc_result_a;
ppc_result_d = mem_grab_word(ppc_effective_address);
ppc_result_a = ppc_effective_address;
ppc_store_result_regd();
ppc_store_result_rega();
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_lhzx() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_result_d = mem_grab_word(ppc_effective_address);
ppc_store_result_regd();
}
void ppc_lhzux() {
ppc_grab_regsdab();
if ((reg_a != reg_d) || reg_a != 0) {
ppc_effective_address = ppc_result_a + ppc_result_b;
ppc_result_d = mem_grab_word(ppc_effective_address);
ppc_result_a = ppc_effective_address;
ppc_store_result_regd();
ppc_store_result_rega();
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_lha() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
uint16_t val = mem_grab_word(ppc_effective_address);
if (val & 0x8000) {
ppc_result_d = 0xFFFF0000UL | (uint32_t)val;
} else {
ppc_result_d = (uint32_t)val;
}
ppc_store_result_regd();
}
void ppc_lhau() {
ppc_grab_regsda();
if ((reg_a != reg_d) || reg_a != 0) {
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += ppc_result_a;
uint16_t val = mem_grab_word(ppc_effective_address);
if (val & 0x8000) {
ppc_result_d = 0xFFFF0000UL | (uint32_t)val;
} else {
ppc_result_d = (uint32_t)val;
}
ppc_store_result_regd();
ppc_result_a = ppc_effective_address;
ppc_store_result_rega();
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_lhaux() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
uint16_t val = mem_grab_word(ppc_effective_address);
if (val & 0x8000) {
ppc_result_d = 0xFFFF0000UL | (uint32_t)val;
} else {
ppc_result_d = (uint32_t)val;
}
ppc_store_result_regd();
ppc_result_a = ppc_effective_address;
ppc_store_result_rega();
}
void ppc_lhax() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
uint16_t val = mem_grab_word(ppc_effective_address);
if (val & 0x8000) {
ppc_result_d = 0xFFFF0000UL | (uint32_t)val;
} else {
ppc_result_d = (uint32_t)val;
}
ppc_store_result_regd();
}
void ppc_lhbrx() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_result_d = (uint32_t)(BYTESWAP_16(mem_grab_word(ppc_effective_address)));
ppc_store_result_regd();
}
void ppc_lwz() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
ppc_result_d = mem_grab_dword(ppc_effective_address);
ppc_store_result_regd();
}
void ppc_lwbrx() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_result_d = BYTESWAP_32(mem_grab_dword(ppc_effective_address));
ppc_store_result_regd();
}
void ppc_lwzu() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
if ((reg_a != reg_d) || reg_a != 0) {
ppc_effective_address += ppc_result_a;
ppc_result_d = mem_grab_dword(ppc_effective_address);
ppc_store_result_regd();
ppc_result_a = ppc_effective_address;
ppc_store_result_rega();
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}
void ppc_lwzx() {
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_result_d = mem_grab_dword(ppc_effective_address);
ppc_store_result_regd();
}
void ppc_lwzux() {
ppc_grab_regsdab();
if ((reg_a != reg_d) || reg_a != 0) {
ppc_effective_address = ppc_result_a + ppc_result_b;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
ppc_result_d = mem_grab_dword(ppc_effective_address);
ppc_result_a = ppc_effective_address;
ppc_store_result_regd();
ppc_store_result_rega();
}
void ppc_lwarx() {
// Placeholder - Get the reservation of memory implemented!
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
ppc_state.reserve = true;
ppc_result_d = mem_grab_dword(ppc_effective_address);
ppc_store_result_regd();
}
void ppc_lmw() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
// How many words to load in memory - using a do-while for this
do {
ppc_state.gpr[reg_d] = mem_grab_dword(ppc_effective_address);
ppc_effective_address += 4;
reg_d++;
} while (reg_d < 32);
}
void ppc_lswi() {
ppc_grab_regsda();
ppc_effective_address = ppc_result_a;
grab_inb = (ppc_cur_instruction >> 11) & 31;
grab_inb = (grab_inb & 32) == 0 ? 32 : grab_inb;
uint32_t shift_times = 0;
while (grab_inb > 0) {
switch (shift_times) {
case 0:
ppc_state.gpr[reg_d] = (ppc_result_d & 0x00FFFFFFUL) |
(mem_grab_byte(ppc_effective_address) << 24);
ppc_store_result_regd();
break;
case 1:
ppc_result_d = (ppc_result_d & 0xFF00FFFFUL) |
(mem_grab_byte(ppc_effective_address) << 16);
ppc_store_result_regd();
break;
case 2:
ppc_result_d = (ppc_result_d & 0xFFFF00FFUL) |
(mem_grab_byte(ppc_effective_address) << 8);
ppc_store_result_regd();
break;
case 3:
ppc_result_d = (ppc_result_d & 0xFFFFFF00UL) | mem_grab_byte(ppc_effective_address);
ppc_store_result_regd();
break;
default:
LOG_F(ERROR, "Something really horrible happened with lswi. \n");
}
if (shift_times == 3) {
shift_times = 0;
reg_d = (reg_d + 1) & 0x1F;
} else {
shift_times++;
}
ppc_effective_address++;
grab_inb--;
}
}
void ppc_lswx() {
ppc_grab_regsdab();
// Invalid instruction forms
if ((ppc_result_d == 0) && (ppc_result_a == 0)) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x100000);
}
if ((ppc_result_d == ppc_result_a) || (ppc_result_a == ppc_result_b)) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x100000);
}
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
grab_inb = ppc_state.spr[SPR::XER] & 127;
uint32_t shift_times = 0;
while (grab_inb > 0) {
switch (shift_times) {
case 0:
ppc_result_d = (ppc_result_d & 0x00FFFFFFUL) |
(mem_grab_byte(ppc_effective_address) << 24);
ppc_store_result_regd();
break;
case 1:
ppc_result_d = (ppc_result_d & 0xFF00FFFFUL) |
(mem_grab_byte(ppc_effective_address) << 16);
ppc_store_result_regd();
break;
case 2:
ppc_result_d = (ppc_result_d & 0xFFFF00FFUL) |
(mem_grab_byte(ppc_effective_address) << 8);
ppc_store_result_regd();
break;
case 3:
ppc_result_d = (ppc_result_d & 0xFFFFFF00UL) | mem_grab_byte(ppc_effective_address);
ppc_store_result_regd();
break;
default:
LOG_F(ERROR, "Something really horrible happened with lswx. \n");
}
if (shift_times == 3) {
shift_times = 0;
reg_d = (reg_d + 1) & 0x1F;
} else {
shift_times++;
}
ppc_effective_address++;
grab_inb--;
}
}
void ppc_stswi() {
ppc_grab_regssa();
ppc_effective_address = (reg_a == 0) ? 0 : ppc_result_a;
grab_inb = (ppc_cur_instruction >> 11) & 31;
grab_inb = (grab_inb & 32) == 0 ? 32 : grab_inb;
uint32_t shift_times = 0;
while (grab_inb > 0) {
switch (shift_times) {
case 0:
strwrd_replace_value = (ppc_result_d >> 24);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
case 1:
strwrd_replace_value = (ppc_result_d >> 16);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
case 2:
strwrd_replace_value = (ppc_result_d >> 8);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
case 3:
strwrd_replace_value = (ppc_result_d);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
default:
LOG_F(ERROR, "Something really horrible happened with stswi. \n");
}
if (shift_times == 3) {
shift_times = 0;
reg_s = (reg_s + 1) & 0x1F;
} else {
shift_times++;
}
ppc_effective_address++;
grab_inb--;
}
}
void ppc_stswx() {
ppc_grab_regssab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
grab_inb = ppc_state.spr[SPR::XER] & 127;
uint32_t shift_times = 0;
while (grab_inb > 0) {
switch (shift_times) {
case 0:
strwrd_replace_value = (ppc_result_d >> 24);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
case 1:
strwrd_replace_value = (ppc_result_d >> 16);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
case 2:
strwrd_replace_value = (ppc_result_d >> 8);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
case 3:
strwrd_replace_value = (ppc_result_d);
mem_write_byte(ppc_effective_address, strwrd_replace_value);
break;
default:
LOG_F(ERROR, "Something really horrible happened with stswx. \n");
}
if (shift_times == 3) {
shift_times = 0;
reg_s = (reg_s + 1) & 0x1F;
} else {
shift_times++;
}
ppc_effective_address++;
grab_inb--;
}
}
// TLB Instructions
void ppc_tlbie() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
/* placeholder */
}
void ppc_tlbia() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
/* placeholder */
}
void ppc_tlbld() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
/* placeholder */
}
void ppc_tlbli() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
/* placeholder */
}
void ppc_tlbsync() {
#ifdef PROFILER
supervisor_inst_num++;
#endif
/* placeholder */
}
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