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ppsspp/Core/HLE/HLETables.cpp
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Henrik Rydgård 5c9eda7cd8 KDebugForKernel: implement Kprintf 
Outrun 2006's USB kernel module calls it on a failed sceUsbbdRegister,
so booting the game printed "Unimplemented function Kprintf". It's the
kernel's debug printf - on hardware it goes to whatever
sceKernelRegisterKprintfHandler() installed, which on a retail PSP is
the serial port, so this is just debug output the game shipped with.
We format it and log it, which is the useful thing to do with it.

The vararg walker that sysclib's sprintf/snprintf already had is now
HLEFormatPrintf() in HLE.cpp, so there's one of these rather than a
second copy. It takes the index of the first vararg (counting a0 as 0)
instead of an offset from a2, which is the same mapping written in
absolute terms - sprintf passes 2 and snprintf 3, where they passed
0 and 1 before.

Kprintf replaces the existing nullptr entry in the KDebugForKernel
table, so no indices move and savestates are unaffected.
2026-09-18 16:26:41 -06:00

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// Copyright (c) 2012- PPSSPP Project.
// 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, version 2.0 or later versions.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include "Core/HLE/HLE.h"
#include "Core/HLE/HLETables.h"
#include "Core/HLE/FunctionWrappers.h"
#include "sceAtrac.h"
#include "sceAudio.h"
#include "sceAudiocodec.h"
#include "sceAudioRouting.h"
#include "sceCcc.h"
#include "sceChnnlsv.h"
#include "sceCtrl.h"
#include "sceChkreg.h"
#include "sceDeflt.h"
#include "sceDisplay.h"
#include "sceDmac.h"
#include "sceFont.h"
#include "sceGameUpdate.h"
#include "sceGe.h"
#include "sceHeap.h"
#include "sceHprm.h"
#include "sceHttp.h"
#include "sceImpose.h"
#include "sceIo.h"
#include "sceJpeg.h"
#include "sceKernel.h"
#include "sceKernelEventFlag.h"
#include "sceKernelHeap.h"
#include "sceKernelMemory.h"
#include "sceKernelInterrupt.h"
#include "sceKernelModule.h"
#include "sceKernelSemaphore.h"
#include "sceKernelThread.h"
#include "sceKernelTime.h"
#include "sceMd5.h"
#include "sceMp4.h"
#include "sceAac.h"
#include "sceMp3.h"
#include "sceNet.h"
#include "sceNetAdhoc.h"
#include "sceNetAdhocMatching.h"
#include "sceNp.h"
#include "sceMpeg.h"
#include "sceMpegbase.h"
#include "sceOpenPSID.h"
#include "sceResmgr.h"
#include "sceP3da.h"
#include "sceParseHttp.h"
#include "sceParseUri.h"
#include "scePauth.h"
#include "scePower.h"
#include "scePspNpDrm_user.h"
#include "scePsmf.h"
#include "sceReg.h"
#include "sceRtc.h"
#include "sceSas.h"
#include "sceSircs.h"
#include "sceSsl.h"
#include "sceUmd.h"
#include "sceUsb.h"
#include "sceUsbAcc.h"
#include "sceUsbCam.h"
#include "sceUsbGps.h"
#include "sceUsbMic.h"
#include "sceUtility.h"
#include "sceVaudio.h"
#include "sceVshBridge.h"
#include "sceMt19937.h"
#include "sceSha256.h"
#include "sceAdler.h"
#include "sceSfmt19937.h"
#include "sceG729.h"
#include "KUBridge.h"
#include "sceNetInet.h"
#include "sceNetResolver.h"
// #include "sceNp2.h"
#include "sceNet_lib.h"
#include "sceVideocodec.h"
static const HLEFunction FakeSysCalls[] = {
{NID_THREADRETURN, __KernelReturnFromThread, "__KernelReturnFromThread", 'x', ""},
{NID_CALLBACKRETURN, __KernelReturnFromMipsCall, "__KernelReturnFromMipsCall", 'x', ""},
{NID_INTERRUPTRETURN, __KernelReturnFromInterrupt, "__KernelReturnFromInterrupt", 'x', ""},
{NID_EXTENDRETURN, __KernelReturnFromExtendStack, "__KernelReturnFromExtendStack", 'x', ""},
{NID_MODULERETURN, __KernelReturnFromModuleFunc, "__KernelReturnFromModuleFunc", 'x', ""},
{NID_IDLE, __KernelIdle, "_sceKernelIdle", 'x', ""},
{NID_GPUREPLAY, &WrapI_V<__KernelGPUReplay>, "__KernelGPUReplay", 'x', ""},
{NID_HLECALLRETURN, HLEReturnFromMipsCall, "HLEReturnFromMipsCall", 'x', ""},
};
static const HLEFunction UtilsForUser[] = {
{0X91E4F6A7, &WrapU_V<sceKernelLibcClock>, "sceKernelLibcClock", 'x', "" },
{0X27CC57F0, &WrapU_U<sceKernelLibcTime>, "sceKernelLibcTime", 'x', "x" },
{0X71EC4271, &WrapU_UU<sceKernelLibcGettimeofday>, "sceKernelLibcGettimeofday", 'x', "xx" },
{0XBFA98062, &WrapI_UI<sceKernelDcacheInvalidateRange>, "sceKernelDcacheInvalidateRange", 'i', "xi" },
{0XC8186A58, &WrapI_UIU<sceKernelUtilsMd5Digest>, "sceKernelUtilsMd5Digest", 'i', "xix"},
{0X9E5C5086, &WrapI_U<sceKernelUtilsMd5BlockInit>, "sceKernelUtilsMd5BlockInit", 'i', "x" },
{0X61E1E525, &WrapI_UUI<sceKernelUtilsMd5BlockUpdate>, "sceKernelUtilsMd5BlockUpdate", 'i', "xxi"},
{0XB8D24E78, &WrapI_UU<sceKernelUtilsMd5BlockResult>, "sceKernelUtilsMd5BlockResult", 'i', "xx" },
{0X840259F1, &WrapI_UIU<sceKernelUtilsSha1Digest>, "sceKernelUtilsSha1Digest", 'i', "xix"},
{0XF8FCD5BA, &WrapI_U<sceKernelUtilsSha1BlockInit>, "sceKernelUtilsSha1BlockInit", 'i', "x" },
{0X346F6DA8, &WrapI_UUI<sceKernelUtilsSha1BlockUpdate>, "sceKernelUtilsSha1BlockUpdate", 'i', "xxi"},
{0X585F1C09, &WrapI_UU<sceKernelUtilsSha1BlockResult>, "sceKernelUtilsSha1BlockResult", 'i', "xx" },
{0XE860E75E, &WrapU_UU<sceKernelUtilsMt19937Init>, "sceKernelUtilsMt19937Init", 'x', "xx" },
{0X06FB8A63, &WrapU_U<sceKernelUtilsMt19937UInt>, "sceKernelUtilsMt19937UInt", 'x', "x" },
{0X37FB5C42, &WrapU_V<sceKernelGetGPI>, "sceKernelGetGPI", 'x', "" },
{0X6AD345D7, &WrapV_U<sceKernelSetGPO>, "sceKernelSetGPO", 'v', "x" },
{0X79D1C3FA, &WrapI_V<sceKernelDcacheWritebackAll>, "sceKernelDcacheWritebackAll", 'i', "" },
{0XB435DEC5, &WrapI_V<sceKernelDcacheWritebackInvalidateAll>, "sceKernelDcacheWritebackInvalidateAll", 'i', "" },
{0X3EE30821, &WrapI_UI<sceKernelDcacheWritebackRange>, "sceKernelDcacheWritebackRange", 'i', "xi" },
{0X34B9FA9E, &WrapI_UI<sceKernelDcacheWritebackInvalidateRange>, "sceKernelDcacheWritebackInvalidateRange", 'i', "xi" },
{0XC2DF770E, &WrapI_UI<sceKernelIcacheInvalidateRange>, "sceKernelIcacheInvalidateRange", 'i', "xi" },
{0X80001C4C, nullptr, "sceKernelDcacheProbe", '?', "" },
{0X16641D70, nullptr, "sceKernelDcacheReadTag", '?', "" },
{0X4FD31C9D, nullptr, "sceKernelIcacheProbe", '?', "" },
{0XFB05FAD0, nullptr, "sceKernelIcacheReadTag", '?', "" },
{0X920F104A, &WrapU_V<sceKernelIcacheInvalidateAll>, "sceKernelIcacheInvalidateAll", 'x', "" }
};
static const HLEFunction LoadCoreForKernel[] = {
{0XACE23476, nullptr, "sceKernelCheckPspConfig", '?', "" },
{0X7BE1421C, nullptr, "sceKernelCheckExecFile", '?', "" },
{0XBF983EF2, nullptr, "sceKernelProbeExecutableObject", '?', "" },
{0X7068E6BA, nullptr, "sceKernelLoadExecutableObject", '?', "" },
{0XB4D6FECC, nullptr, "sceKernelApplyElfRelSection", '?', "" },
{0X54AB2675, nullptr, "sceKernelApplyPspRelSection", '?', "" },
{0X2952F5AC, nullptr, "sceKernelDcacheWBinvAll", '?', "" },
{0xD8779AC6, &WrapU_V<sceKernelIcacheClearAll>, "sceKernelIcacheClearAll", 'x', "", HLE_KERNEL_SYSCALL },
{0X99A695F0, nullptr, "sceKernelRegisterLibrary", '?', "" },
{0X5873A31F, nullptr, "sceKernelRegisterLibraryForUser", '?', "" },
{0X0B464512, nullptr, "sceKernelReleaseLibrary", '?', "" },
{0X9BAF90F6, nullptr, "sceKernelCanReleaseLibrary", '?', "" },
{0X0E760DBA, nullptr, "sceKernelLinkLibraryEntries", '?', "" },
{0X0DE1F600, nullptr, "sceKernelLinkLibraryEntriesForUser", '?', "" },
{0XDA1B09AA, nullptr, "sceKernelUnLinkLibraryEntries", '?', "" },
{0XC99DD47A, nullptr, "sceKernelQueryLoadCoreCB", '?', "" },
{0X616FCCCD, nullptr, "sceKernelSetBootCallbackLevel", '?', "" },
{0XF32A2940, nullptr, "sceKernelModuleFromUID", '?', "" },
{0XCD0F3BAC, nullptr, "sceKernelCreateModule", '?', "" },
{0X6B2371C2, nullptr, "sceKernelDeleteModule", '?', "" },
{0X7320D964, nullptr, "sceKernelModuleAssign", '?', "" },
{0X44B292AB, nullptr, "sceKernelAllocModule", '?', "" },
{0XBD61D4D5, nullptr, "sceKernelFreeModule", '?', "" },
{0XAE7C6E76, nullptr, "sceKernelRegisterModule", '?', "" },
{0X74CF001A, nullptr, "sceKernelReleaseModule", '?', "" },
{0XFB8AE27D, nullptr, "sceKernelFindModuleByAddress", '?', "" },
{0XCCE4A157, &WrapU_U<sceKernelFindModuleByUID>, "sceKernelFindModuleByUID", 'x', "x" , HLE_KERNEL_SYSCALL },
{0X82CE54ED, nullptr, "sceKernelModuleCount", '?', "" },
{0XC0584F0C, nullptr, "sceKernelGetModuleList", '?', "" },
{0XCF8A41B1, &WrapU_C<sceKernelFindModuleByName>, "sceKernelFindModuleByName", 'x', "s", HLE_KERNEL_SYSCALL },
{0XB95FA50D, nullptr, "LoadCoreForKernel_B95FA50D", '?', "" },
};
// sceKernelSm1ReferOperations() returns a pointer to a driver-registered "SM1 operations"
// table (set up via the sibling sceKernelSm1RegisterOperations(), also unimplemented here),
// or NULL if nothing has registered one.
static u32 sceKernelSm1ReferOperations() {
return hleLogDebug(Log::sceKernel, 0);
}
// The kernel's debug printf. On hardware it formats the string and hands it to whatever
// sceKernelRegisterKprintfHandler() installed, which on a retail PSP means the serial port -
// so nothing a player ever sees, and games that call it are just leaving debug output in.
// We format it and put it in the log, which is the useful thing to do with it.
// Declared void in the SDK headers, so the return value doesn't matter, but 0 is what the
// firmware leaves in v0.
static u32 Kprintf(u32 fmtAddr) {
std::string formatted;
if (!HLEFormatPrintf(fmtAddr, 1, &formatted)) {
return hleLogError(Log::Printf, 0, "bad format string or args");
}
// Each log line is already a line, so don't double space.
if (!formatted.empty() && formatted.back() == '\n') {
formatted.pop_back();
}
return hleLogInfo(Log::Printf, 0, "\"%s\"", formatted.c_str());
}
static const HLEFunction KDebugForKernel[] = {
{0XE7A3874D, nullptr, "sceKernelRegisterAssertHandler", '?', "" },
{0X2FF4E9F9, nullptr, "sceKernelAssert", '?', "" },
{0X9B868276, nullptr, "sceKernelGetDebugPutchar", '?', "" },
{0XE146606D, nullptr, "sceKernelRegisterDebugPutchar", '?', "" },
{0X7CEB2C09, &WrapU_V<sceKernelRegisterKprintfHandler>, "sceKernelRegisterKprintfHandler", 'x', "", HLE_KERNEL_SYSCALL },
{0X84F370BC, &WrapU_U<Kprintf>, "Kprintf", 'x', "x", HLE_KERNEL_SYSCALL },
{0X5CE9838B, nullptr, "sceKernelDebugWrite", '?', "" },
{0X66253C4E, nullptr, "sceKernelRegisterDebugWrite", '?', "" },
{0XDBB5597F, nullptr, "sceKernelDebugRead", '?', "" },
{0XE6554FDA, nullptr, "sceKernelRegisterDebugRead", '?', "" },
{0XB9C643C9, nullptr, "sceKernelDebugEcho", '?', "" },
{0X7D1C74F0, nullptr, "sceKernelDebugEchoSet", '?', "" },
{0X24C32559, nullptr, "sceKernelDipsw", '?', "" },
{0XD636B827, nullptr, "sceKernelRemoveByDebugSection", '?', "" },
{0X5282DD5E, nullptr, "sceKernelDipswSet", '?', "" },
{0X9F8703E4, nullptr, "sceKernelDipswCpTime", '?', "" },
{0X333DCEC7, nullptr, "sceKernelSm1RegisterOperations", '?', "" },
{0XE892D9A1, &WrapU_V<sceKernelSm1ReferOperations>, "sceKernelSm1ReferOperations", 'x', "" },
{0XA126F497, nullptr, "KDebugForKernel_A126F497", '?', "" },
{0XB7251823, nullptr, "sceKernelAcceptMbogoSig", '?', "" },
};
static const HLEFunction pspeDebug[] = {
{0XDEADBEAF, nullptr, "pspeDebugWrite", '?', "" },
};
static const HLEModule moduleList[] = {
{"FakeSysCalls", ARRAY_SIZE(FakeSysCalls), FakeSysCalls},
{"UtilsForUser", ARRAY_SIZE(UtilsForUser), UtilsForUser},
{"KDebugForKernel", ARRAY_SIZE(KDebugForKernel), KDebugForKernel},
{"sceSAScore"},
{"SceBase64_Library"},
{"sceCert_Loader"},
{"SceFont_Library"},
{"sceNetApctl"},
{"sceSIRCS_IrDA_Driver"},
{"Pspnet_Scan"},
{"Pspnet_Show_MacAddr"},
{"pspeDebug", ARRAY_SIZE(pspeDebug), pspeDebug},
};
static const int numModules = ARRAY_SIZE(moduleList);
void RegisterAllModules() {
Register_Kernel_Library();
Register_ThreadManForUser();
Register_ThreadManForKernel();
Register_LoadExecForUser();
Register_UtilsForKernel();
Register_SysMemUserForUser();
Register_InterruptManager();
Register_IoFileMgrForUser();
Register_ModuleMgrForUser();
Register_ModuleMgrForKernel();
Register_StdioForUser();
Register_sceHprm();
Register_sceCcc();
Register_sceCtrl();
Register_sceDisplay();
Register_sceAudio();
Register_sceSasCore();
Register_sceFont();
Register_sceNet();
Register_sceNetResolver();
Register_sceNetInet();
Register_sceNetApctl();
Register_sceNetAdhoc();
Register_sceNetAdhocMatching();
Register_sceNetAdhocDiscover();
Register_sceNetAdhocctl();
Register_sceRtc();
Register_sceWlanDrv();
Register_sceMpeg();
Register_sceMp3();
Register_sceHttp();
Register_scePower();
Register_sceImpose();
Register_sceSuspendForUser();
Register_sceGe_user();
Register_sceUmdUser();
Register_sceDmac();
Register_sceUtility();
Register_sceAtrac3plus();
Register_scePsmf();
Register_scePsmfPlayer();
Register_sceOpenPSID();
Register_sceParseUri();
Register_sceSsl();
Register_sceParseHttp();
Register_sceVaudio();
Register_sceUsb();
Register_sceChnnlsv();
Register_sceNpDrm();
Register_sceP3da();
Register_sceGameUpdate();
Register_sceDeflt();
Register_sceMp4();
Register_sceAac();
Register_scePauth();
Register_sceNp();
Register_sceNpCommerce2();
Register_sceNpService();
Register_sceNpAuth();
Register_sceMd5();
Register_sceJpeg();
Register_sceAudiocodec();
Register_sceHeap();
for (int i = 0; i < numModules; i++) {
RegisterHLEModule(moduleList[i].name, moduleList[i].numFunctions, moduleList[i].funcTable);
}
// IMPORTANT: New modules have to be added at the end, or they will break savestates.
Register_StdioForKernel();
RegisterHLEModule("LoadCoreForKernel", ARRAY_SIZE(LoadCoreForKernel), LoadCoreForKernel);
Register_IoFileMgrForKernel();
Register_LoadExecForKernel();
Register_SysMemForKernel();
Register_sceMt19937();
Register_SysclibForKernel();
Register_sceCtrl_driver();
Register_sceDisplay_driver();
Register_sceMpegbase();
Register_sceUsbGps();
Register_sceLibFttt();
Register_sceSha256();
Register_sceAdler();
Register_sceSfmt19937();
Register_sceAudioRouting();
Register_sceUsbCam();
Register_sceG729();
Register_sceNetUpnp();
Register_sceNetIfhandle();
Register_KUBridge();
Register_sceUsbAcc();
Register_sceUsbMic();
Register_sceOpenPSID_driver();
Register_semaphore();
Register_sceDdrdb();
Register_mp4msv();
Register_InterruptManagerForKernel();
Register_sceSircs();
Register_sceNet_lib();
Register_sceReg();
Register_sceRtc_driver();
Register_scePower_driver();
Register_sceImpose_driver();
Register_sceHprm_driver();
Register_sceChkreg();
Register_sceVshBridge();
Register_sceResmgr();
Register_sceVideocodec();
// add new modules here.
// Not ready to enable this due to apparent softlocks in Patapon 3.
// Register_sceNpMatching2();
}
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