From 7a7857f47b33f1b63fb585d2dc6c60d87c3e928f Mon Sep 17 00:00:00 2001
From: aliaspider
Date: Mon, 9 Nov 2015 19:55:28 +0100
Subject: C++ --> C99

---
 src/os9x_asm_cpu.c | 255 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 255 insertions(+)
 create mode 100644 src/os9x_asm_cpu.c

(limited to 'src/os9x_asm_cpu.c')

diff --git a/src/os9x_asm_cpu.c b/src/os9x_asm_cpu.c
new file mode 100644
index 0000000..bfd2ec5
--- /dev/null
+++ b/src/os9x_asm_cpu.c
@@ -0,0 +1,255 @@
+#include "snes9x.h"
+#include "apu.h"
+#include "ppu.h"
+#include "cpuexec.h"
+//#include "cpuops.h"
+
+#include "os9x_asm_cpu.h"
+
+//#define __debug_c_irq__
+//#define __debug_c_nmi__
+//#define __debug_c_hblank__
+//#define __debug_c_io__
+
+START_EXTERN_C
+
+void asm_S9xSetPCBase(uint32 Address)
+{
+#ifdef __debug_c_setpc__
+	printf("spcb\n");
+#endif	
+	S9xSetPCBase(Address);	
+}
+
+
+#ifdef _C_GW_
+#define PushW(w) \
+    S9xSetWord (w, Registers.S.W - 1);\
+    Registers.S.W -= 2;
+#define PushB(b)\
+    S9xSetByte (b, Registers.S.W--);
+
+
+void asm_S9xMainLoop(void)
+{
+	//S9xPackStatus();
+	//printf("asmMainLoop Enter(0x%08x).\n", CPU.Flags);
+	asmMainLoop(&CPU);
+	//printf("asmMainLoop Exit(0x%08x, %d).\n", CPU.PC - CPU.PCBase, CPU.Cycles);
+	//S9xUnpackStatus();	
+}
+
+void asm_S9xDoHBlankProcessing(void)
+{	
+#ifdef __debug_c_hblank__
+	printf("hblank\n");
+#endif	
+//	S9xUnpackStatus(); // not needed
+	S9xDoHBlankProcessing();	
+//	S9xPackStatus();	
+}
+
+
+uint8 asm_S9xGetByte(uint32 Address)
+{
+#ifdef __debug_c_io__
+	printf("gb\n");
+#endif	
+	return S9xGetByte(Address);	
+}
+
+uint16 asm_S9xGetWord(uint32 Address)
+{
+#ifdef __debug_c_io__
+	printf("gw\n");
+#endif	
+	return S9xGetWord(Address);	
+}
+
+
+void asm_S9xSetByte(uint32 Address,uint8 value)
+{	
+#ifdef __debug_c_io__
+	printf("sb\n");		
+#endif
+	S9xSetByte(value,Address);	
+}
+
+void asm_S9xSetWord(uint32 Address,uint16 value)
+{	
+#ifdef __debug_c_io__
+	printf("sw\n");
+#endif	
+	S9xSetWord(value,Address);
+}
+
+
+void asm_S9xOpcode_NMI(void)
+{	
+#ifdef __debug_c_nmi__
+	printf("nmi\n");
+#endif	
+//	S9xUnpackStatus(); // not needed
+
+	if (!CheckEmulation())
+    {
+	PushB (Registers.PB);
+	PushW (CPU.PC - CPU.PCBase);
+//	S9xPackStatus ();
+	PushB (Registers.PL);
+	ClearDecimal ();
+	SetIRQ ();
+
+	Registers.PB = 0;
+//	c = 0; // unused
+#ifdef USE_SA1
+	if (Settings.SA1 && (Memory.FillRAM [0x2209] & 0x20))
+	    S9xSetPCBase (Memory.FillRAM [0x220c] |
+			  (Memory.FillRAM [0x220d] << 8));
+	else
+#endif
+		S9xSetPCBase (S9xGetWord (0xFFEA));
+#ifdef VAR_CYCLES
+	CPU.Cycles += TWO_CYCLES;
+#else
+	CPU.Cycles += 8;
+#endif
+    }
+    else
+    {
+	PushW (CPU.PC - CPU.PCBase);
+//	S9xPackStatus (); // not needed
+	PushB (Registers.PL);
+	ClearDecimal ();
+	SetIRQ ();
+
+	Registers.PB = 0;
+//	ICPU.ShiftedPB = 0; // unused
+#ifdef USE_SA1
+	if (Settings.SA1 && (Memory.FillRAM [0x2209] & 0x20))
+	    S9xSetPCBase (Memory.FillRAM [0x220c] |
+			  (Memory.FillRAM [0x220d] << 8));
+	else
+#endif
+	    S9xSetPCBase (S9xGetWord (0xFFFA));
+#ifdef VAR_CYCLES
+	CPU.Cycles += ONE_CYCLE;
+#else
+	CPU.Cycles += 6;
+#endif
+    }
+
+//	S9xPackStatus(); // not needed
+}
+
+void asm_S9xOpcode_IRQ(void)
+{
+#ifdef __debug_c_irq__
+	printf("irq\n");
+#endif	
+//	S9xUnpackStatus(); // not needed
+
+    if (!CheckEmulation())
+    {
+	PushB (Registers.PB);
+	PushW (CPU.PC - CPU.PCBase);
+//	S9xPackStatus (); // not needed
+	PushB (Registers.PL);
+	ClearDecimal ();
+	SetIRQ ();
+
+	Registers.PB = 0;
+//	ICPU.ShiftedPB = 0; // unused
+
+#ifdef USE_SA1
+	if (Settings.SA1 && (Memory.FillRAM [0x2209] & 0x40))
+	    S9xSetPCBase (Memory.FillRAM [0x220e] | 
+			  (Memory.FillRAM [0x220f] << 8));
+	else
+#endif
+		S9xSetPCBase (S9xGetWord (0xFFEE));
+#ifdef VAR_CYCLES
+        CPU.Cycles += TWO_CYCLES;
+#else
+	CPU.Cycles += 8;
+#endif
+    }
+    else
+    {
+	PushW (CPU.PC - CPU.PCBase);
+//	S9xPackStatus (); // not needed
+	PushB (Registers.PL);
+	ClearDecimal ();
+	SetIRQ ();
+
+	Registers.PB = 0;
+//	ICPU.ShiftedPB = 0; // unused
+
+#ifdef USE_SA1
+	if (Settings.SA1 && (Memory.FillRAM [0x2209] & 0x40))
+	    S9xSetPCBase (Memory.FillRAM [0x220e] | 
+			  (Memory.FillRAM [0x220f] << 8));
+	else
+#endif
+		S9xSetPCBase (S9xGetWord (0xFFFE));
+#ifdef VAR_CYCLES
+	CPU.Cycles += ONE_CYCLE;
+#else
+	CPU.Cycles += 6;
+#endif
+    }
+	
+//	S9xPackStatus(); // not needed
+}
+#endif
+
+/*
+void asm_APU_EXECUTE(int Mode)
+{
+#ifdef __debug_c_apuex__	
+	printf("apuexec\n");
+#endif
+	if(CPU.APU_APUExecuting != Mode) return;
+
+	if (Settings.asmspc700)
+	{
+		if(CPU.APU_Cycles < CPU.Cycles) {
+			int cycles = CPU.Cycles - CPU.APU_Cycles;
+			CPU.APU_Cycles += cycles - spc700_execute(cycles);
+		}
+	}
+	else
+	{
+		while (CPU.APU_Cycles <= CPU.Cycles)
+		{
+			CPU.APU_Cycles += S9xAPUCycles [*IAPU.PC];
+			(*S9xApuOpcodes[*IAPU.PC]) ();
+		}
+	}
+}
+
+
+void asm_APU_EXECUTE2(void)
+{
+	if(CPU.APU_APUExecuting != 1) return;
+
+	//ICPU.CPUExecuting = FALSE;
+	if (Settings.asmspc700)
+	{
+		if(CPU.APU_Cycles < CPU.NextEvent) {
+			int cycles = CPU.NextEvent - CPU.APU_Cycles;
+			CPU.APU_Cycles += cycles - spc700_execute(cycles);
+		}
+	}
+	else
+	{
+		do
+		{
+			CPU.APU_Cycles += S9xAPUCycles [*IAPU.PC];
+			(*S9xApuOpcodes[*IAPU.PC]) ();
+		} while (CPU.APU_Cycles < CPU.NextEvent);
+	}
+	//ICPU.CPUExecuting = TRUE;
+}*/
+
+END_EXTERN_C
-- 
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