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functions.cpp
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functions.cpp
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#include "functions.h"
#include <fmt/color.h>
#include <fmt/core.h>
#include <magic_enum.hpp>
#include "debugger/debugger.h"
#include "system.h"
#include "utils/string.h"
namespace bios {
Function::Function(const std::string& prototype, std::function<bool(System* sys)> callback) : callback(callback) {
auto argStart = prototype.find('(');
auto argEnd = prototype.find(')');
assert(argStart != std::string::npos && argEnd != std::string::npos);
std::string sArgs = prototype.substr(argStart + 1, argEnd - argStart - 1);
std::vector<std::string> args = split(sArgs, ", "); // TODO: do trimming
std::string sFuncName = prototype.substr(0, argStart);
this->name = sFuncName.c_str();
for (auto sArg : args) {
sArg = trim(sArg);
auto delim = sArg.find_last_of(' ');
if (delim == std::string::npos) {
throw std::runtime_error(fmt::format("{} -> Invalid parameter without type", prototype));
}
auto sType = trim(sArg.substr(0, delim));
auto sName = trim(sArg.substr(delim + 1));
Arg arg;
arg.name = sName;
arg.type = Type::INT;
if (sType == "int")
arg.type = Type::INT;
else if (sType == "char")
arg.type = Type::CHAR;
else if (sType == "const char*" || sType == "char*")
arg.type = Type::STRING;
else if (sType == "FILE*")
arg.type = Type::INT;
else if (sType == "void*")
arg.type = Type::POINTER;
else
throw std::runtime_error(fmt::format("{} -> Invalid parameter type", prototype));
this->args.push_back(arg);
}
}
inline bool noLog(System* sys) {
(void)(sys);
return false;
}
inline bool dbgOutputChar(System* sys) {
if (sys->debugOutput) putchar(sys->cpu->reg[4]);
return false; // Do not log function call
}
inline bool dbgOutputString(System* sys) {
if (!sys->debugOutput) return false;
for (int i = 0; i < 80; i++) {
char c = sys->readMemory8(sys->cpu->reg[4] + i);
if (c == 0) {
fmt::print("\n");
return false;
}
putchar(c);
}
return false; // Do not log function call
}
inline bool haltSystem(System* sys) {
sys->state = System::State::halted;
return true;
}
inline bool forceTTYOn(System* sys) {
(void)sys;
// Force TTY redirection (requires proper DUART implementation)
sys->cpu->reg[4] = 1;
return true;
}
inline bool unresolvedException(System* sys) {
const int howManyInstructionsToDisassemble = 6;
auto cause = sys->cpu->cop0.cause;
uint32_t epc = sys->cpu->cop0.epc;
#define RED fmt::fg(fmt::terminal_color::red)
#define WHITE fmt::fg(fmt::terminal_color::white)
#define BLUE fmt::fg(fmt::terminal_color::blue)
#define BOLD fmt::emphasis::bold
// Unresolved exception: {EXCEPTION_NAME} (EXCEPTION_NUMBER), epc={EPC}, ra={RA}
fmt::print(RED, "Unresolved exception");
fmt::print(": ");
fmt::print(WHITE | BOLD, "{}", magic_enum::enum_name(cause.exception));
fmt::print(" ({})", static_cast<int>(cause.exception));
fmt::print(", epc=");
fmt::print(BLUE, "0x{:08x}", epc);
fmt::print(", ra=");
fmt::print(BLUE, "0x{:08x}\n", sys->cpu->reg[31]);
for (uint32_t addr = epc - howManyInstructionsToDisassemble * 4; addr <= epc; addr += 4) {
auto opcode = mips::Opcode(sys->readMemory32(addr));
auto ins = debugger::decodeInstruction(opcode);
fmt::print(BLUE, "0x{:08x}: ", addr);
fmt::print(WHITE, "{:<8} {}", ins.mnemonic, ins.parameters);
if (addr == epc) {
fmt::print(WHITE | BOLD, " <---- Caused the exception\n");
} else {
fmt::print("\n");
}
}
fmt::print(RED, "This is most likely bug in Avocado, please report it.\n");
fmt::print(RED | BOLD, "Emulation stopped.\n");
sys->state = System::State::halted;
return false;
}
const std::unordered_map<uint8_t, Function> A0 = {
{0x00, {"FileOpen(const char* file, int mode)"}},
{0x01, {"FileSeek(FILE* file, int offset, int origin)"}},
{0x02, {"FileRead(FILE* file, void* dst, int length)"}},
{0x03, {"FileWrite(FILE* file, void* src, int length)"}},
{0x04, {"FileClose(FILE* file)"}},
{0x05, {"FileIoctl(FILE* file, int cmd, int arg)"}},
{0x06, {"exit(int exitcode)"}},
{0x07, {"FileGetDeviceFlag(FILE* file)"}},
{0x08, {"FileGetc(FILE* file)"}},
{0x09, {"FilePutc(char c, FILE* file)"}},
{0x0A, {"todigit(char c)"}},
{0x0B, {"atof(int src)"}}, // ;Does NOT work - uses ABSENT cop1 !!!
{0x0C, {"strtoul(const char* src, int src_end, int base)"}},
{0x0D, {"strtol(const char* src, int src_end, int base)"}},
{0x0E, {"abs(int val)"}},
{0x0F, {"labs(int val)"}},
{0x10, {"atoi(int src)"}},
{0x11, {"atol(int src)"}},
{0x12, {"atob(const char* src, void* num_dst)"}},
{0x13, {"SaveState(void* buf)"}},
{0x14, {"RestoreState(void* buf, int param)"}},
{0x15, {"strcat(char* dest, const char* src)"}},
{0x16, {"strncat(char* dest, const char* src, int maxlen)"}},
{0x17, {"strcmp(const char* str1, const char* str2)"}},
{0x18, {"strncmp(const char* str1, const char* str2, int maxlen)"}},
{0x19, {"strcpy(char* dst, const char* src)"}},
{0x1A, {"strncpy(char* dst, const char* src, int maxlen)"}},
{0x1B, {"strlen(const char* src)"}},
{0x1C, {"index(const char* src, char c)"}},
{0x1D, {"rindex(const char* src, char c)"}},
{0x1E, {"strchr(const char* src, char c)"}},
{0x1F, {"strrchr(const char* src, char c)"}},
{0x20, {"strpbrk(const char* src, const char* list)"}},
{0x21, {"strspn(const char* src, const char* list)"}},
{0x22, {"strcspn(const char* src, const char* list)"}},
{0x23, {"strtok(const char* src, const char* list)"}},
{0x24, {"strstr(const char* str, const char* substr)"}}, // buggy
{0x25, {"toupper(char c)"}},
{0x26, {"tolower(char c)"}},
{0x27, {"bcopy(void* src, void* dst, int len)"}},
{0x28, {"bzero(void* dst, int len)"}},
{0x29, {"bcmp(void* ptr1, void* ptr2, int len)"}}, // ;Bugged
{0x2A, {"memcpy(void* dst, void* src, int len)"}},
{0x2B, {"memset(void* dst, int value, int num)"}},
{0x2C, {"memmove(void* dst, void* src, int len)"}}, // ;Bugged
{0x2D, {"memcmp(void* src1, void* src2, int len)"}}, // ;Bugged
{0x2E, {"memchr(void* ptr, char value, int num)"}},
{0x2F, {"rand()"}},
{0x30, {"srand(int seed)"}},
{0x31, {"qsort(void* base, int num, int size, void* callback)"}},
{0x32, {"strtod(const char* str, int endptr)"}}, // ABSENT cop1 !!!
{0x33, {"malloc(int size)"}},
{0x34, {"free(void* ptr)"}},
{0x35, {"lsearch(void* key, void* base, int num, int size, void* callback)"}},
{0x36, {"bsearch(void* key, void* base, int num, int size, void* callback)"}},
{0x37, {"calloc(int num, int size)"}}, // ;SLOW!
{0x38, {"realloc(void* ptr, int size)"}}, // ;SLOW!
{0x39, {"InitHeap(void* addr, int size)"}},
{0x3A, {"SystemErrorExit(int code)"}},
{0x3B, {"std_in_getchar()"}},
{0x3C, {"std_out_putchar(char c)", dbgOutputChar}},
{0x3D, {"std_in_gets(void* dst)"}},
{0x3E, {"std_out_puts(const char* src)", dbgOutputString}},
{0x3F, {"printf(const char* fmt)"}},
{0x40, {"SystemErrorUnresolvedException()", unresolvedException}},
{0x41, {"LoadExeHeader(const char* filename, void* headerbuf)"}},
{0x42, {"LoadExeFile(const char* filename, void* headerbuf)"}},
{0x43, {"DoExecute(void* header, int param1, int param2)"}},
{0x44, {"FlushCache()"}},
{0x45, {"init_a0_b0_c0_vectors()"}},
{0x46, {"GPU_dw(int xdst, int ydst, int xsiz, int ysiz, void* src)"}},
{0x47, {"gpu_send_dma(int xdst, int ydst, int xsiz, int ysiz, void* src)"}},
{0x48, {"SendGP1Command(int cmd)"}},
{0x49, {"GPU_cw(int cmd)"}},
{0x4A, {"GPU_cwp(void* src, int num)"}},
{0x4B, {"send_gpu_linked_list(void* src)"}},
{0x4C, {"gpu_abort_dma()"}},
{0x4D, {"GetGPUStatus()"}},
{0x4E, {"gpu_sync()"}},
{0x51, {"LoadAndExecute(const char* filename, int stackbase, int stackoffset)"}},
{0x54, {"CdInit()"}},
{0x55, {"_bu_init()"}},
{0x56, {"CdRemove()"}}, // ;does NOT work due to SysDeqIntRP bug
{0x5B, {"dev_tty_init()"}}, // ;PS2: SystemError
{0x5C, {"dev_tty_open(int fcb, const char* path, int accessmode)"}}, // ;PS2: SystemError
{0x5D, {"dev_tty_in_out(int fcb, int cmd)"}}, // ;PS2: SystemError
{0x5E, {"dev_tty_ioctl(int fcb, int cmd, int arg)"}}, // ;PS2: SystemError
{0x5F, {"dev_cd_open(int fcb, const char* path, int accessmode)"}},
{0x60, {"dev_cd_read(int fcb, void* dst, int len)"}},
{0x61, {"dev_cd_close(int fcb)"}},
{0x62, {"dev_cd_firstfile(int fcb, const char* path, void* direntry)"}},
{0x63, {"dev_cd_nextfile(int fcb, void* direntry)"}},
{0x64, {"dev_cd_chdir(int fcb, const char* path)"}},
{0x65, {"dev_card_open(int fcb, const char* path, int accessmode)"}},
{0x66, {"dev_card_read(int fcb, void* dst, int len)"}},
{0x67, {"dev_card_write(int fcb, void* src, int len)"}},
{0x68, {"dev_card_close(int fcb)"}},
{0x69, {"dev_card_firstfile(int fcb, const char* path, void* direntry)"}},
{0x6A, {"dev_card_nextfile(int fcb, void* direntry)"}},
{0x6B, {"dev_card_erase(int fcb, const char* path)"}},
{0x6C, {"dev_card_undelete(int fcb, const char* path)"}},
{0x6D, {"dev_card_format(int fcb)"}},
{0x6E, {"dev_card_rename(int fcb1, const char* path1, int fcb2, const char* path2)"}},
{0x70, {"_bu_init()"}},
{0x71, {"CdInit()"}},
{0x72, {"CdRemove()"}}, // ;does NOT work due to SysDeqIntRP bug
{0x78, {"CdAsyncSeekL(void* src)"}}, // TODO: Implement BCD struct
{0x7C, {"CdAsyncGetStatus(void* dst)"}},
{0x7E, {"CdAsyncReadSector(int count, void* dst, int mode)"}},
{0x81, {"CdAsyncSetMode(int mode)"}},
{0x90, {"CdromIoIrqFunc1()"}},
{0x91, {"CdromDmaIrqFunc1()"}},
{0x92, {"CdromIoIrqFunc2()"}},
{0x93, {"CdromDmaIrqFunc2()"}},
{0x94, {"CdromGetInt5errCode(void* dst1, void* dst2)"}},
{0x95, {"CdInitSubFunc()"}},
{0x96, {"AddCDROMDevice()"}},
{0x97, {"AddMemCardDevice()"}}, // ;DTL-H: SystemError
{0x98, {"AddDuartTtyDevice()"}}, // ;DTL-H: AddAdconsTtyDevice ;PS2: SystemError
{0x99, {"AddDummyTtyDevice()"}},
{0x9C, {"SetConf(int numb_EvCB, int numb_TCB, int stacktop)"}},
{0x9D, {"GetConf(int numb_EvCB, int numb_TCB, void* stacktop_dst)"}},
{0x9E, {"SetCdromIrqAutoAbort(int type, int flag)"}},
{0x9F, {"SetMemSize(int size)"}},
{0xA1, {"BootFailed()", haltSystem}}, // Called when booting CD fails
{0xA0, {"WarmBoot()"}},
{0xA1, {"SystemErrorBootOrDiskFailure(char type, int errorcode)", haltSystem}}, // Called when booting CD fails
{0xA2, {"EnqueueCdIntr()"}},
{0xA3, {"DequeueCdIntr()"}},
{0xA4, {"CdGetLbn(const char* filename)"}},
{0xA5, {"CdReadSector(int count, int sector, void* buffer)"}},
{0xA6, {"CdGetStatus()"}},
{0xA7, {"bu_callback_okay()"}},
{0xA8, {"bu_callback_err_write()"}},
{0xA9, {"bu_callback_err_busy()"}},
{0xAA, {"bu_callback_err_eject()"}},
{0xAB, {"_card_info(int port)"}},
{0xAC, {"_card_async_load_directory(int port)"}},
{0xAD, {"set_card_auto_format(int flag)"}},
{0xAE, {"bu_callback_err_prev_write()"}},
{0xAF, {"card_write_test(int port)"}},
{0xB0, {"return_0()"}},
{0xB1, {"return_0()"}},
{0xB2, {"ioabort_raw(int param)"}},
{0xB3, {"return_0()"}},
{0xB4, {"GetSystemInfo(int index)"}},
};
const std::unordered_map<uint8_t, Function> B0 = {
{0x00, {"alloc_kernel_memory(int size)"}},
{0x01, {"free_kernel_memory(void* ptr)"}},
{0x02, {"init_timer(int t, int reload, int flags)"}},
{0x03, {"get_timer(int t)"}},
{0x04, {"enable_timer_irq(int t)"}},
{0x05, {"disable_timer_irq(int t)"}},
{0x06, {"restart_timer(int t)"}},
{0x07, {"DeliverEvent(int event, int spec)"}},
{0x08, {"OpenEvent(int class, int spec, int mode, void* func)"}},
{0x09, {"CloseEvent(int event)"}},
{0x0A, {"WaitEvent(int event)"}},
{0x0B, {"TestEvent(int event)"}},
{0x0C, {"EnableEvent(int event)"}},
{0x0D, {"DisableEvent(int event)"}},
{0x0E, {"OpenThread(int pc, int sp_fp, int gp)"}},
{0x0F, {"CloseThread(int handle)"}},
{0x10, {"ChangeThread(int handle)"}},
{0x11, {"jump_to_00000000h()"}},
{0x12, {"InitPad(void* buf1, int size1, void* buf2, int size2)"}},
{0x13, {"StartPad()"}},
{0x14, {"StopPad()"}},
{0x15, {"OutdatedPadInitAndStart(int type, void* button_dest, int unused1, int unused2)"}},
{0x16, {"OutdatedPadGetButtons()"}},
{0x17, {"ReturnFromException()"}},
{0x18, {"SetDefaultExitFromException()"}},
{0x19, {"SetCustomExitFromException(int addr)"}},
{0x1A, {"SystemError()", haltSystem}},
{0x1B, {"SystemError()", haltSystem}},
{0x1C, {"SystemError()", haltSystem}},
{0x1D, {"SystemError()", haltSystem}},
{0x1E, {"SystemError()", haltSystem}},
{0x1F, {"SystemError()", haltSystem}},
{0x20, {"UnDeliverEvent(int event, int spec)"}},
{0x21, {"SystemError()", haltSystem}},
{0x22, {"SystemError()", haltSystem}},
{0x23, {"SystemError()", haltSystem}},
{0x2A, {"SystemError()", haltSystem}},
{0x2B, {"SystemError()", haltSystem}},
{0x32, {"FileOpen(const char* file, int mode)"}},
{0x33, {"FileSeek(FILE* file, int offset, int origin)"}},
{0x34, {"FileRead(FILE* file, void* dst, int length)"}},
{0x35, {"FileWrite(FILE* file, void* src, int length)"}},
{0x36, {"FileClose(FILE* file)"}},
{0x37, {"FileIoctl(FILE* file, int cmd, int arg)"}},
{0x38, {"exit(int code)"}},
{0x39, {"FileGetDeviceFlag(FILE* file)"}},
{0x3A, {"FileGetc(FILE* file)"}},
{0x3B, {"FilePutc(char c, FILE* file)"}},
{0x3C, {"std_in_getchar()"}},
{0x3D, {"std_out_putchar(char c)", dbgOutputChar}},
{0x3E, {"std_in_gets(void* dst)"}},
{0x3F, {"std_out_puts(const char* src)", dbgOutputString}},
{0x40, {"chdir(const char* name)"}},
{0x41, {"FormatDevice(const char* device_name)"}},
{0x42, {"firstfile(const char* filename, void* direntry)"}},
{0x43, {"nextfile(void* direntry)"}},
{0x44, {"FileRename(const char* old_filename, const char* new_filename)"}},
{0x45, {"FileDelete(const char* filename)"}},
{0x46, {"FileUndelete(const char* filename)"}},
{0x47, {"AddDevice(void* device_info)"}},
{0x48, {"RemoveDevice(const char* device_name)"}},
{0x49, {"PrintInstalledDevices()"}},
{0x4A, {"InitCard(int pad_enable)"}},
{0x4B, {"StartCard()"}},
{0x4C, {"StopCard()"}},
{0x4D, {"_card_info_subfunc(int port)"}},
{0x4E, {"write_card_sector(int port, int sector, void* src)"}},
{0x4F, {"read_card_sector(int port, int sector, void* dst)"}},
{0x50, {"allow_new_card()"}},
{0x51, {"Krom2RawAdd(int shiftjis_code)"}},
{0x52, {"SystemError()", haltSystem}},
{0x53, {"Krom2Offset(int shiftjis_code)"}},
{0x54, {"GetLastError()"}},
{0x55, {"GetLastFileError(FILE* file)"}},
{0x56, {"GetC0Table()"}},
{0x57, {"GetB0Table()"}},
{0x58, {"get_bu_callback_port()"}},
{0x59, {"testdevice(const char* device_name)"}},
{0x5A, {"SystemError()", haltSystem}},
{0x5B, {"ChangeClearPad(int unknown)"}},
{0x5C, {"get_card_status(int slot)"}},
{0x5D, {"wait_card_status(int slot)"}},
};
const std::unordered_map<uint8_t, Function> C0 = {
//
{0x00, {"EnqueueTimerAndVblankIrqs(int priority)"}},
{0x01, {"EnqueueSyscallHandler(int priority)"}},
{0x02, {"SysEnqIntRP(int priority, void* struc)"}}, // ;bugged, use with care
{0x03, {"SysDeqIntRP(int priority, void* struc)"}}, // ;bugged, use with care
{0x04, {"get_free_EvCB_slot()"}},
{0x05, {"get_free_TCB_slot()"}},
{0x06, {"ExceptionHandler()"}},
{0x07, {"InstallExceptionHandlers()"}}, // ;destroys/uses k0/k1
{0x08, {"SysInitMemory(void* addr, int size)"}},
{0x09, {"SysInitKernelVariables()"}},
{0x0A, {"ChangeClearRCnt(int t, int flag)"}},
{0x0B, {"SystemError()", haltSystem}}, // ;PS2: return 0
{0x0C, {"InitDefInt(int priority)"}},
{0x0D, {"SetIrqAutoAck(int irq, int flag)"}},
{0x0E, {"return_0()"}}, // ;DTL-H2000: dev_sio_init
{0x0F, {"return_0()"}}, // ;DTL-H2000: dev_sio_open
{0x10, {"return_0()"}}, // ;DTL-H2000: dev_sio_in_out
{0x11, {"return_0()"}}, // ;DTL-H2000: dev_sio_ioctl
{0x12, {"InstallDevices(int ttyflag)"}},
{0x13, {"FlushStdInOutPut()"}},
{0x14, {"return 0()"}}, // ;DTL-H2000: SystemError
{0x15, {"tty_cdevinput(int circ, char c)"}},
{0x16, {"tty_cdevscan()"}},
{0x17, {"tty_circgetc(int circ)"}}, // ;uses r5 as garbage txt for ioabort
{0x18, {"tty_circputc(char c, int circ)"}},
{0x19, {"ioabort(const char* txt1, const char* txt2)"}},
{0x1A, {"set_card_find_mode(int mode)"}}, // ;0=normal, 1=find deleted files
{0x1B, {"KernelRedirect(int ttyflag)"}}, // ;PS2: ttyflag=1 causes SystemError
{0x1C, {"AdjustA0Table()"}},
{0x1D, {"get_card_find_mode()"}},
};
const std::array<std::unordered_map<uint8_t, Function>, 3> tables = {{A0, B0, C0}};
const std::unordered_map<uint8_t, Function> SYSCALL = {
//
{0x00, {"NoFunction()"}}, {0x01, {"EnterCriticalSection()"}},
{0x02, {"ExitCriticalSection()"}}, {0x03, {"ChangeThreadSubFunction(int addr)"}},
{0x04, {"DeliverEvent()"}},
};
}; // namespace bios