275 lines
9.6 KiB
C++
275 lines
9.6 KiB
C++
#pragma once
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#include "../jabyengine_defines.hpp"
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/*
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R0 zr Constant Zero
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R1 at Reserved for the assembler
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R2-R3 v0-v1 Values for results and expression evaluation
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R4-R7 a0-a3 Arguments
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R8-R15 t0-t7 Temporaries (not preserved across call)
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R16-R23 s0-s7 Saved (preserved across call)
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R24-R25 t8-t9 More temporaries (not preserved across call)
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R26-R27 k0-k1 Reserved for OS Kernel
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R28 gp Global Pointer
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R29 sp Stack Pointer
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R30 fp Frame Pointer
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R31 ra Return address (set by function call)
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*/
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namespace JabyEngine {
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namespace BIOS {
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struct Version {
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enum Type {
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Unkown,
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Devboard,
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PS1,
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PS2,
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PS3,
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PSCompatible, // internal usage only
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No$psx,
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XEBRA
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};
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struct {
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uint8_t day;
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uint8_t month;
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uint16_t year;
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} date;
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Type type;
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const char* kernel_maker;
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const char* version_str;
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const char* gui_version;
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const char* copyright;
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};
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extern const Version version;
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}
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struct TCB {
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uint32_t status;
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uint32_t unused;
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uint32_t reg[32];
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uint32_t epc;
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uint32_t hi;
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uint32_t lo;
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uint32_t sr;
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uint32_t cause;
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uint32_t unused2[9];
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};
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struct PCB {
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TCB* current_tcb;
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};
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struct ToT {
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using ExCB = void;
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using EvCB = void;
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using FCB = void;
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ExCB* exception_chain;
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uint32_t exception_chain_size;
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PCB* processes;
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uint32_t processes_size;
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TCB* threads;
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uint32_t threads_size;
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uint32_t reserved_0;
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uint32_t reserved_1;
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EvCB* events;
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uint32_t events_size;
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uint32_t reserved_2;
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uint32_t reserved_3;
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uint32_t reserved_4;
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uint32_t reserved_5;
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uint32_t reserved_6;
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uint32_t reserved_7;
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FCB* files;
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uint32_t files_size;
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uint32_t reserved_8;
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uint32_t reserved_9;
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};
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extern ToT table_of_tables;
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namespace SysCall {
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static constexpr const uint32_t Table_A = 0xA0;
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static constexpr const uint32_t Table_B = 0xB0;
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static constexpr const uint32_t Table_C = 0xC0;
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enum struct Priority {
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CdromDmaIrq = 0,
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CdromIoIrq = 0,
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SyscallException = 0,
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CardSpecificIrq = 1,
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VblankIrq = 1,
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Timer2Irq = 1,
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Timer1Irq = 1,
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Timer0Irq = 1,
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PadCardIrq = 2,
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DefInt = 3
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};
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enum InterruptVerifierResult {
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SkipHandler = 0,
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ExecuteHandler = 1
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};
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typedef InterruptVerifierResult (*InterruptVerifier)();
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typedef uint32_t (*InterruptHandler)(uint32_t);
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#pragma pack(push, 1)
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struct InterrupCallback {
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struct InterrupCallback* next;
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InterruptHandler handler_function;
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InterruptVerifier verifier_function;
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uint32_t notUsed;
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};
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#pragma pack(pop)
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#define __syscall_function_cast(table, ...) reinterpret_cast<__VA_ARGS__>(table)
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static __always_inline uint32_t* get_gp() {
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uint32_t* gp;
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__asm__("sw $gp, %0" : "=m"(gp));
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return gp;
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}
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static __always_inline void* memcpy(void *dst, const void *src, size_t len) {
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register uint32_t FuncID asm("t1") = 0x2A;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_A, void*(*)(void*, const void*, size_t))(dst, src, len);
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}
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static __always_inline uint32_t OpenTh(void (*thread_func)(), uint32_t* stack_ptr, uint32_t* gp) {
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register uint32_t FuncID asm("t1") = 0x0E;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_B, uint32_t(*)(void(*)(), uint32_t*, uint32_t*))(thread_func, stack_ptr, gp);
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}
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static __always_inline uint32_t ChangeTh(uint32_t thread) {
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register uint32_t FuncID asm("t1") = 0x10;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_B, uint32_t(*)(uint32_t))(thread);
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}
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static __always_inline int changeThreadSubFunction(uint32_t address) {
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register int n asm("a0") = 3;
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register int tcb asm("a1") = address;
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register int r asm("v0");
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__asm__ volatile("syscall\n" : "=r"(r) : "r"(n), "r"(tcb) : "memory");
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return r;
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}
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static __always_inline void InitPad(uint8_t *portA, uint32_t portASize, uint8_t *portB, uint32_t portBSize) {
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register uint32_t FuncID asm("t1") = 0x12;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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__syscall_function_cast(Table_B, void(*)(uint8_t*, uint32_t, uint8_t*, uint32_t))(portA, portASize, portB, portBSize);
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}
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static __always_inline void StartPad() {
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register uint32_t FuncID asm("t1") = 0x13;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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__syscall_function_cast(Table_B, void(*)())();
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}
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static __always_inline void StopPad() {
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register uint32_t FuncID asm("t1") = 0x14;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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__syscall_function_cast(Table_B, void(*)())();
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}
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static __always_inline void ChangeClearPad(int32_t _reserved) {
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register uint32_t FuncID asm("t1") = 0x5B;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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__syscall_function_cast(Table_B, void(*)(int32_t))(_reserved);
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}
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static __always_inline void [[noreturn]] ReturnFromException() {
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register uint32_t FuncID asm("t1") = 0x17;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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__syscall_function_cast(Table_B, void(*)())();
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}
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static __always_inline int SysEnqIntRP(Priority prio, InterrupCallback* interElm) {
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register uint32_t FuncID asm("t1") = 0x02;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_C, int(*)(Priority prio, InterrupCallback *interElm))(prio, interElm);
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}
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static __always_inline int SysDeqIntRP(Priority prio, InterrupCallback *interElm) {
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register uint32_t FuncID asm("t1") = 0x03;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_C, int(*)(Priority prio, InterrupCallback *interElm))(prio, interElm);
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}
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static __always_inline uint32_t EnterCriticalSection() {
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register uint32_t FuncID asm("a0") = 0x01;
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register uint32_t returnValue asm("v0");
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__asm__ volatile("syscall" : "=r"(FuncID), "=r"(returnValue) : "r"(FuncID) : "at", "v1", "a1", "a2", "a3", "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9", "memory");
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return returnValue;
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}
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static __always_inline void ExitCriticalSection() {
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register uint32_t FuncID asm("a0") = 0x02;
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__asm__ volatile("syscall" : "=r"(FuncID) : "r"(FuncID) : "at", "v0", "v1", "a1", "a2", "a3", "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9", "memory");
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}
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static __always_inline void DeliverEvent(uint32_t classId, uint32_t spec) {
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register uint32_t FuncID asm("t1") = 0x07;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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__syscall_function_cast(Table_B, void (*)(uint32_t, uint32_t))(classId, spec);
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}
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static __always_inline uint32_t OpenEvent(uint32_t classId, uint32_t spec, uint32_t mode, void (*handler)()) {
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register uint32_t FuncID asm("t1") = 0x08;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_B, uint32_t(*)(uint32_t, uint32_t, uint32_t, void(*)()))(classId, spec, mode, handler);
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}
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static __always_inline int CloseEvent(uint32_t event) {
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register uint32_t FuncID asm("t1") = 0x09;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_B, uint32_t(*)(uint32_t))(event);
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}
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static __always_inline int32_t TestEvent(uint32_t event) {
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register uint32_t FuncID asm("t1") = 0x0B;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_B, int32_t (*)(uint32_t))(event);
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}
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static __always_inline int32_t EnableEvent(uint32_t event) {
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register uint32_t FuncID asm("t1") = 0x0C;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_B, int32_t (*)(uint32_t))(event);
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}
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static __always_inline const uint16_t* Krom2RawAdd(uint16_t sjis_code) {
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register uint32_t FuncID asm("t1") = 0x51;
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__asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
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return __syscall_function_cast(Table_B, const uint16_t* (*)(uint16_t))(sjis_code);
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}
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void printf(const char* txt, ...);
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}
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} |