Macintosh-Tools/dingusppc
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dingusppc/cpu/ppc/test/ppctests.cpp
joevt 4f45d7de35 cpu: Add cpu options to ppc_cpu_init. 
The first option is a flag that enables MPC601 (POWER) instructions for CPUs that are not MPC601.
This can be useful for the following reasons:
1) To produce results similar to classic Mac OS which emulates MPC601 instructions on CPUs that don't implement MPC601 instructions. This option is used to compare the risu traces produced in Mac OS 9 on a G3 or G4 with DPPC.
2) May increase performance in apps that use POWER instructions on emulated machines with CPUs that are not MPC601. It is not known if any such apps exist but there could be since Apple included MPC601 emulation in classic Mac OS.
2024-04-10 06:43:18 -07:00

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/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-23 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/>.
*/
#include "../ppcdisasm.h"
#include "../ppcemu.h"
#include <cfenv>
#include <cmath>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <limits>
#include <sstream>
#include <string>
#include <vector>
using namespace std;
int ntested; // number of tested instructions
int nfailed; // number of failed instructions
void xer_ov_test(string mnem, uint32_t opcode) {
ppc_state.gpr[3] = 2;
ppc_state.gpr[4] = 2;
ppc_state.spr[SPR::XER] = 0xFFFFFFFF;
ppc_cur_instruction = opcode;
ppc_main_opcode();
if (ppc_state.spr[SPR::XER] & 0x40000000UL) {
cout << "Invalid " << mnem << " emulation! XER[OV] should not be set." << endl;
nfailed++;
}
ntested++;
}
void xer_update_test() {
xer_ov_test("ADDCO", 0x7C632414);
xer_ov_test("ADDCO.", 0x7C632415);
xer_ov_test("ADDO", 0x7C632614);
xer_ov_test("ADDO.", 0x7C632615);
xer_ov_test("ADDEO", 0x7C632514);
xer_ov_test("ADDEO.", 0x7C632515);
xer_ov_test("ADDMEO", 0x7C6305D4);
xer_ov_test("ADDMEO.", 0x7C6305D5);
xer_ov_test("ADDZEO", 0x7C630594);
xer_ov_test("ADDZEO.", 0x7C630595);
xer_ov_test("DIVWO", 0x7C6327D6);
xer_ov_test("DIVWO.", 0x7C6327D7);
xer_ov_test("DIVWUO", 0x7C632796);
xer_ov_test("DIVWUO.", 0x7C632797);
xer_ov_test("MULLWO", 0x7C6325D6);
xer_ov_test("MULLWO.", 0x7C6325D7);
xer_ov_test("NEGO", 0x7C6304D0);
xer_ov_test("NEGO.", 0x7C6304D1);
xer_ov_test("SUBFO", 0x7C632450);
xer_ov_test("SUBFO.", 0x7C632451);
xer_ov_test("SUBFCO", 0x7C632410);
xer_ov_test("SUBFCO.", 0x7C632411);
xer_ov_test("SUBFEO", 0x7C632510);
xer_ov_test("SUBFEO.", 0x7C632511);
xer_ov_test("SUBFMEO", 0x7C6305D0);
xer_ov_test("SUBFMEO.", 0x7C6305D1);
xer_ov_test("SUBFZEO", 0x7C630590);
xer_ov_test("SUBFZEO.", 0x7C630591);
}
/** testing vehicle */
static void read_test_data() {
string line, token;
int i, lineno;
uint32_t opcode, dest, src1, src2, check_xer, check_cr;
ifstream tfstream("ppcinttests.csv");
if (!tfstream.is_open()) {
cout << "Could not open tests CSV file. Exiting..." << endl;
return;
}
lineno = 0;
while (getline(tfstream, line)) {
lineno++;
if (line.empty() || !line.rfind("#", 0))
continue; /* skip empty/comment lines */
istringstream lnstream(line);
vector<string> tokens;
while (getline(lnstream, token, ',')) {
tokens.push_back(token);
}
if (tokens.size() < 5) {
cout << "Too few values in line " << lineno << ". Skipping..." << endl;
continue;
}
opcode = (uint32_t)stoul(tokens[1], NULL, 16);
dest = 0;
src1 = 0;
src2 = 0;
check_xer = 0;
check_cr = 0;
for (i = 2; i < tokens.size(); i++) {
if (tokens[i].rfind("rD=", 0) == 0) {
dest = (uint32_t)stoul(tokens[i].substr(3), NULL, 16);
} else if (tokens[i].rfind("rA=", 0) == 0) {
src1 = (uint32_t)stoul(tokens[i].substr(3), NULL, 16);
} else if (tokens[i].rfind("rB=", 0) == 0) {
src2 = (uint32_t)stoul(tokens[i].substr(3), NULL, 16);
} else if (tokens[i].rfind("XER=", 0) == 0) {
check_xer = (uint32_t)stoul(tokens[i].substr(4), NULL, 16);
} else if (tokens[i].rfind("CR=", 0) == 0) {
check_cr = (uint32_t)stoul(tokens[i].substr(3), NULL, 16);
} else {
cout << "Unknown parameter " << tokens[i] << " in line " << lineno << ". Exiting..."
<< endl;
exit(0);
}
}
ppc_state.gpr[3] = src1;
ppc_state.gpr[4] = src2;
ppc_state.spr[SPR::XER] = 0;
ppc_state.cr = 0;
ppc_cur_instruction = opcode;
ppc_main_opcode();
ntested++;
if ((tokens[0].rfind("CMP") && (ppc_state.gpr[3] != dest)) ||
(ppc_state.spr[SPR::XER] != check_xer) || (ppc_state.cr != check_cr)) {
cout << "Mismatch: instr=" << tokens[0] << ", src1=0x" << hex << src1 << ", src2=0x"
<< hex << src2 << endl;
cout << "expected: dest=0x" << hex << dest << ", XER=0x" << hex << check_xer
<< ", CR=0x" << hex << check_cr << endl;
cout << "got: dest=0x" << hex << ppc_state.gpr[3] << ", XER=0x" << hex
<< ppc_state.spr[SPR::XER] << ", CR=0x" << hex << ppc_state.cr << endl;
cout << "Test file line #: " << dec << lineno << endl << endl;
nfailed++;
}
}
}
double double_from_string(string str) {
if (str == "snan")
return std::numeric_limits<double>::signaling_NaN();
if (str == "qnan")
return std::numeric_limits<double>::quiet_NaN();
if (str == "-FLT_MAX")
return -std::numeric_limits<float>::max();
if (str == "-FLT_MIN")
return -std::numeric_limits<float>::min();
if (str == "-DBL_MAX")
return -std::numeric_limits<double>::max();
if (str == "-DBL_MIN")
return -std::numeric_limits<double>::min();
if (str == "FLT_MIN")
return std::numeric_limits<float>::min();
if (str == "FLT_MAX")
return std::numeric_limits<float>::max();
if (str == "DBL_MIN")
return std::numeric_limits<double>::min();
if (str == "DBL_MAX")
return std::numeric_limits<double>::max();
return stod(str, NULL);
}
static void read_test_float_data() {
string line, token;
int i, lineno;
uint32_t opcode, src1, src2, check_cr, check_fpscr;
uint64_t dest_64;
//float sfp_dest, sfp_src1, sfp_src2, sfp_src3;
double dfp_src1, dfp_src2, dfp_src3;
string rounding_mode;
ifstream tf2stream("ppcfloattests.csv");
if (!tf2stream.is_open()) {
cout << "Could not open tests CSV file. Exiting..." << endl;
return;
}
lineno = 0;
while (getline(tf2stream, line)) {
lineno++;
if (line.empty() || !line.rfind("#", 0))
continue; // skip empty/comment lines
istringstream lnstream(line);
vector<string> tokens;
while (getline(lnstream, token, ',')) {
tokens.push_back(token);
}
if (tokens.size() < 5) {
cout << "Too few values in line " << lineno << ". Skipping..." << endl;
continue;
}
opcode = (uint32_t)stoul(tokens[1], NULL, 16);
src1 = 0;
src2 = 0;
check_cr = 0;
check_fpscr = 0;
dfp_src1 = 0.0;
dfp_src2 = 0.0;
dfp_src3 = 0.0;
dest_64 = 0;
// switch to default rounding
fesetround(FE_TONEAREST);
for (i = 2; i < tokens.size(); i++) {
if (tokens[i].rfind("frD=", 0) == 0) {
dest_64 = stoull(tokens[i].substr(4), NULL, 16);
} else if (tokens[i].rfind("frA=", 0) == 0) {
dfp_src1 = double_from_string(tokens[i].substr(4));
} else if (tokens[i].rfind("frB=", 0) == 0) {
dfp_src2 = double_from_string(tokens[i].substr(4));
} else if (tokens[i].rfind("frC=", 0) == 0) {
dfp_src3 = double_from_string(tokens[i].substr(4));
} else if (tokens[i].rfind("round=", 0) == 0) {
rounding_mode = tokens[i].substr(6, 3);
} else if (tokens[i].rfind("FPSCR=", 0) == 0) {
check_fpscr = (uint32_t)stoul(tokens[i].substr(6), NULL, 16);
} else if (tokens[i].rfind("CR=", 0) == 0) {
check_cr = (uint32_t)stoul(tokens[i].substr(3), NULL, 16);
} else {
cout << "Unknown parameter " << tokens[i] << " in line " << lineno << ". Exiting..."
<< endl;
exit(0);
}
}
if (rounding_mode.compare("RTN") == 0) {
update_fpscr(0);
} else if (rounding_mode.compare("RTZ") == 0) {
update_fpscr(1);
} else if (rounding_mode.compare("RPI") == 0) {
update_fpscr(2);
} else if (rounding_mode.compare("RNI") == 0) {
update_fpscr(3);
} else if (rounding_mode.compare("VEN") == 0) {
update_fpscr(FPSCR::VE);
} else {
cout << "ILLEGAL ROUNDING METHOD: " << tokens[i] << " in line " << lineno
<< ". Exiting..." << endl;
exit(0);
}
ppc_state.gpr[3] = src1;
ppc_state.gpr[4] = src2;
ppc_state.fpr[3].dbl64_r = 0;
ppc_state.fpr[4].dbl64_r = dfp_src1;
ppc_state.fpr[5].dbl64_r = dfp_src2;
ppc_state.fpr[6].dbl64_r = dfp_src3;
ppc_state.cr = 0;
ppc_cur_instruction = opcode;
ppc_main_opcode();
ntested++;
// switch to default rounding
fesetround(FE_TONEAREST);
if ((tokens[0].rfind("FCMP") && (ppc_state.fpr[3].int64_r != dest_64)) ||
(ppc_state.fpscr != check_fpscr) ||
(ppc_state.cr != check_cr)) {
cout << "Mismatch: instr=" << tokens[0] << ", src1=" << scientific << dfp_src1 << ", src2=" << scientific << dfp_src2 << ", src3=" << scientific << dfp_src3 << endl;
cout << "expected: dest=0x" << hex << dest_64 << ", FPSCR=0x" << hex << check_fpscr
<< ", CR=0x"
<< hex << check_cr << endl;
cout << "got: dest=0x" << hex << ppc_state.fpr[3].int64_r << ", FPSCR=0x" << hex
<< ppc_state.fpscr << ", CR=0x" << hex << ppc_state.cr << endl;
cout << "Test file line #: " << dec << lineno << endl << endl;
nfailed++;
}
}
}
int main() {
initialize_ppc_opcode_tables(true); //kludge
cout << "Running DingusPPC emulator tests..." << endl << endl;
ntested = 0;
nfailed = 0;
cout << "Testing XER[OV] updating..." << endl << endl;
xer_update_test();
cout << endl << "Testing integer instructions:" << endl;
read_test_data();
cout << endl << "Float IEEE suport: " << (bool)std::numeric_limits<float>::is_iec559 << endl;
cout << endl << "Double IEEE suport: " << (bool)std::numeric_limits<double>::is_iec559 << endl;
cout << endl << "Testing floating point instructions:" << endl;
read_test_float_data();
cout << "... completed." << endl;
cout << "--> Tested instructions: " << dec << ntested << endl;
cout << "--> Failed: " << dec << nfailed << endl << endl;
cout << "Running PPC disassembler tests..." << endl << endl;
return test_ppc_disasm();
}
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