mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Pegasus
77a8480363
Prefer the ISO9660 boot file over the bounded raw-image scan. Biohazard stores SYSTEM.CNF outside that scan, leaving fresh builds at the default SCEA response. Add raw and cooked late-file regressions with an early decoy serial. The full-profile prefix again matches the retained native baseline through 5999 returns; the independent-source frontier remains return 464.
(cherry picked from commit 82c3de13ef)
51 lines
2.2 KiB
C++
51 lines
2.2 KiB
C++
// SYSTEM.CNF beyond 16 MiB wins over unrelated early cdrom: strings.
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#include "disc_identity.h"
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#include <cassert>
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#include <chrono>
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#include <cstring>
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#include <filesystem>
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#include <fstream>
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#include <vector>
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namespace fs=std::filesystem;
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static void both32(uint8_t* p,uint32_t value) {
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for(unsigned i=0;i<4;i++) {p[i]=(uint8_t)(value>>(8*i));p[7-i]=p[i];}
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}
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static void fixture(const fs::path& path,bool raw) {
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const unsigned unit=raw?2352:2048,offset=raw?24:0;
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std::ofstream file(path,std::ios::binary);
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file.seekp(10000ull*unit-1);file.put(0);
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if(raw) {
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uint8_t sync[16]={};std::memset(sync+1,255,10);sync[15]=2;
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file.seekp(0);file.write((char*)sync,sizeof sync);
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}
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auto write=[&](unsigned lba,const std::vector<uint8_t>& data) {
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file.seekp((uint64_t)lba*unit+offset);
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file.write((const char*)data.data(),data.size());
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};
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std::vector<uint8_t> pvd(2048);
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pvd[0]=1;std::memcpy(pvd.data()+1,"CD001",5);pvd[6]=1;
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auto* root=pvd.data()+156;root[0]=34;both32(root+2,20);both32(root+10,2048);
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root[25]=2;root[28]=root[31]=root[32]=1;
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write(16,pvd);
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const std::string cnf="BOOT = cdrom:SLPS_009.98;1\r\n";
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std::vector<uint8_t> directory(2048);
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directory[0]=46;both32(directory.data()+2,9000);both32(directory.data()+10,(uint32_t)cnf.size());
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directory[28]=directory[31]=1;directory[32]=12;
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std::memcpy(directory.data()+33,"SYSTEM.CNF;1",12);write(20,directory);
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write(9000,std::vector<uint8_t>(cnf.begin(),cnf.end()));
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const std::string decoy="BOOT = cdrom:SLUS_999.99;1\r\n";
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write(40,std::vector<uint8_t>(decoy.begin(),decoy.end()));
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}
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int main() {
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auto root=fs::temp_directory_path()/ ("psx-disc-identity-"+std::to_string(
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std::chrono::steady_clock::now().time_since_epoch().count()));
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fs::create_directory(root);
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for(bool raw:{false,true}) {
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auto image=root/(raw?"disc.bin":"disc.iso");fixture(image,raw);
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auto id=PSXRecompV4::identify_disc(image,"",0,false,false);
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assert(id.opened && id.has_header && id.detected_serial=="SLPS-00998" && id.region=="NTSC-J");
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}
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fs::remove(root/"disc.iso");fs::remove(root/"disc.bin");fs::remove(root);
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}
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