70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
#pragma once
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#include "types.h"
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#include "sh4_if.h"
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#undef sh4op
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#define sh4op(str) void DYNACALL str (u32 op)
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typedef void (DYNACALL OpCallFP) (u32 op);
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enum OpcodeType
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{
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//basic
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Normal = 0, // Heh , nothing special :P
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ReadsPC = 1, // PC must be set upon calling it
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WritesPC = 2, // It will write PC (branch)
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Delayslot = 4, // Has a delayslot opcode , valid only when WritesPC is set
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WritesSR = 8, // Writes to SR , and UpdateSR needs to be called
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WritesFPSCR = 16, // Writes to FPSCR , and UpdateSR needs to be called
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Invalid = 128, // Invalid
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NO_FP = 256,
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NO_GP = 512,
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NO_SP = 1024,
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UsesFPU = 2048, // Floating point op
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FWritesFPSCR = UsesFPU | WritesFPSCR,
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// Heh, not basic :P
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ReadWritePC = ReadsPC|WritesPC, // Read and writes pc :P
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WritesSRRWPC = WritesSR|ReadsPC|WritesPC,
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// Branches (not delay slot):
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Branch_dir = ReadWritePC, // Direct (eg , pc=r[xx]) -- this one is ReadWritePC b/c the delayslot may use pc ;)
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Branch_rel = ReadWritePC, // Relative (rg pc+=10);
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// Delay slot
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Branch_dir_d = Delayslot|Branch_dir, // Direct (eg , pc=r[xx])
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Branch_rel_d = Delayslot|Branch_rel, // Relative (rg pc+=10);
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};
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//interface
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void Sh4_int_Run();
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void Sh4_int_Stop();
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void Sh4_int_Start();
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void Sh4_int_Step();
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void Sh4_int_Skip();
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void Sh4_int_Reset(bool Manual);
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void Sh4_int_Init();
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void Sh4_int_Term();
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bool Sh4_int_IsCpuRunning();
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void sh4_int_RaiseExeption(u32 ExeptionCode,u32 VectorAddr);
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u32 Sh4_int_GetRegister(Sh4RegType reg);
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void Sh4_int_SetRegister(Sh4RegType reg,u32 regdata);
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//Other things (mainly used by the cpu core
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void ExecuteDelayslot();
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void ExecuteDelayslot_RTE();
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#define SH4_TIMESLICE (448) // at 112 Bangai-O doesn't start. 224 is ok
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// at 448 Gundam Side Story hangs on Sega copyright screen, 224 ok, 672 ok(!)
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extern "C" {
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int UpdateSystem();
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#ifndef _MSC_VER
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__attribute__((used))
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#endif
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int UpdateSystem_INTC();
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}
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