X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=ncpu_debug.c;fp=ncpu_debug.c;h=864cae3961da930ccccbb893943a778c1e51ac52;hp=0000000000000000000000000000000000000000;hb=af32b6c2f0ed2f1a4582c3e8d7ac704b9c61fa4c;hpb=937bf65b1c80e9394547e5f105664bd26f3671de

diff --git a/ncpu_debug.c b/ncpu_debug.c
new file mode 100644
index 0000000..864cae3
--- /dev/null
+++ b/ncpu_debug.c
@@ -0,0 +1,156 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "types.h"
+#include "x6502.h"
+#include "fce.h"
+
+// asm core state
+extern uint32 nes_registers[0x10];
+extern uint32 pc_base;
+uint32 PC_prev = 0;
+
+
+static void leave(void)
+{
+	printf("A: %02x, X: %02x, Y: %02x, S: %02x\n", X.A, X.X, X.Y, X.S);
+	printf("PC = %04lx, OP=%02X\n", PC_prev, (PC_prev < 0x2000) ? RAM[PC_prev&0x7ff] : ARead[PC_prev](PC_prev));
+	exit(1);
+}
+
+static void compare_state(void)
+{
+	uint8 nes_flags;
+
+	if ((nes_registers[0] >> 24) != X.A) {
+		printf("A: %02lx vs %02x\n", nes_registers[0] >> 24, X.A);
+		leave();
+	}
+
+	if ((nes_registers[1] & 0xff) != X.X) {
+		printf("X: %02lx vs %02x\n", nes_registers[1] & 0xff, X.X);
+		leave();
+	}
+
+	if ((nes_registers[2] & 0xff) != X.Y) {
+		printf("Y: %02lx vs %02x\n", nes_registers[2] & 0xff, X.Y);
+		leave();
+	}
+
+	if (nes_registers[3] - pc_base != X.PC) {
+		printf("PC: %04lx vs %04x\n", nes_registers[3] - pc_base, X.PC);
+		leave();
+	}
+
+	if ((nes_registers[4] >> 24) != X.S) {
+		printf("S: %02lx vs %02x\n", nes_registers[4] >> 24, X.S);
+		leave();
+	}
+
+	if (((nes_registers[4]>>8)&0xff) != X.IRQlow) {
+		printf("IRQlow: %02lx vs %02x\n", ((nes_registers[4]>>8)&0xff), X.IRQlow);
+		leave();
+	}
+
+	// NVUB DIZC
+	nes_flags = nes_registers[4] & 0x5d;
+	if (  nes_registers[5]&0x80000000)  nes_flags |= 0x80; // N
+	if (!(nes_registers[5]&0x000000ff)) nes_flags |= 0x02; // Z
+	// nes_flags |= 0x20; // U, not set in C core (set only when pushing)
+
+	if (nes_flags != X.P) {
+		printf("flags: %02x vs %02x\n", nes_flags, X.P);
+		leave();
+	}
+
+	if ((int32)nes_registers[7] != X.count) {
+		printf("cycles: %li vs %li\n", (int32)nes_registers[7], X.count);
+		leave();
+	}
+}
+
+
+void TriggerIRQ_d(void)
+{
+	printf("-- irq\n");
+	TriggerIRQ_c();
+	TriggerIRQ_a();
+	compare_state();
+}
+
+void TriggerNMI_d(void)
+{
+	printf("-- nmi\n");
+	TriggerNMI_c();
+	TriggerNMI_a();
+	compare_state();
+}
+
+void TriggerNMINSF_d(void)
+{
+}
+
+void X6502_Run_d(int32 c)
+{
+	int32 cycles = c << 4; /* *16 */ \
+	if (PAL) cycles -= c;  /* *15 */ \
+
+	printf("-- run(%i)\n", (int)c);
+
+	while (cycles > 0)
+	{
+		PC_prev = X.PC;
+		nes_registers[7]=1;
+		X.count=1;
+		X6502_Run_c();
+		X6502_Run_a();
+		compare_state();
+		cycles -= 1 - X.count;
+	}
+}
+
+void X6502_Reset_d(void)
+{
+	printf("-- reset\n");
+
+	X6502_Reset_c();
+	X6502_Reset_a();
+	compare_state();
+}
+
+void X6502_Power_d(void)
+{
+	printf("-- power\n");
+
+	X6502_Power_c();
+	X6502_Power_a();
+	compare_state();
+}
+
+void X6502_AddCycles_d(int x)
+{
+	printf("-- AddCycles(%i)\n", x);
+
+	X6502_AddCycles_c(x);
+	X6502_AddCycles_a(x);
+	//compare_state();
+}
+
+void X6502_IRQBegin_d(int w)
+{
+	printf("-- IRQBegin(%02x)\n", w);
+
+	X6502_IRQBegin_c(w);
+	X6502_IRQBegin_a(w);
+}
+
+void X6502_IRQEnd_d(int w)
+{
+	printf("-- IRQEnd(%02x)\n", w);
+
+	X6502_IRQEnd_c(w);
+	X6502_IRQEnd_a(w);
+}
+
+
+