X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=libpcsxcore%2Fr3000a.c;h=5374f86612e2ea20a6028b9686fed69f80edd1a0;hb=b9698f9dadce9831f21f103c09b3569d2b2441a2;hp=8b7cfbf775b6f5d62c33529654669eb9545f6fa5;hpb=6d75addfea5544b926d3924b1bd1e1d8ce9ffdb4;p=pcsx_rearmed.git

diff --git a/libpcsxcore/r3000a.c b/libpcsxcore/r3000a.c
index 8b7cfbf7..5374f866 100644
--- a/libpcsxcore/r3000a.c
+++ b/libpcsxcore/r3000a.c
@@ -26,6 +26,7 @@
 #include "mdec.h"
 #include "gte.h"
 #include "psxinterpreter.h"
+#include "../include/compiler_features.h"
 
 R3000Acpu *psxCpu = NULL;
 #ifdef DRC_DISABLE
@@ -58,8 +59,10 @@ void psxReset() {
 
 	psxRegs.pc = 0xbfc00000; // Start in bootstrap
 
-	psxRegs.CP0.r[12] = 0x10900000; // COP0 enabled | BEV = 1 | TS = 1
+	psxRegs.CP0.r[12] = 0x10600000; // COP0 enabled | BEV = 1 | TS = 1
 	psxRegs.CP0.r[15] = 0x00000002; // PRevID = Revision ID, same as R3000A
+	if (Config.HLE)
+		psxRegs.CP0.n.Status |= 1u << 30; // COP2 enabled
 
 	psxCpu->ApplyConfig();
 	psxCpu->Reset();
@@ -67,8 +70,13 @@ void psxReset() {
 	psxHwReset();
 	psxBiosInit();
 
-	if (!Config.HLE)
+	BiosLikeGPUSetup(); // a bit of a hack but whatever
+
+	if (!Config.HLE) {
 		psxExecuteBios();
+		if (psxRegs.pc == 0x80030000 && !Config.SlowBoot)
+			BiosBootBypass();
+	}
 
 #ifdef EMU_LOG
 	EMU_LOG("*BIOS END*\n");
@@ -85,20 +93,21 @@ void psxShutdown() {
 }
 
 // cp0 is passed separately for lightrec to be less messy
-void psxException(u32 code, u32 bd, psxCP0Regs *cp0) {
-	psxRegs.code = PSXMu32(psxRegs.pc);
+void psxException(u32 cause, u32 bd, psxCP0Regs *cp0) {
+	u32 opcode = intFakeFetch(psxRegs.pc);
 	
-	if (!Config.HLE && ((((psxRegs.code) >> 24) & 0xfe) == 0x4a)) {
+	if (unlikely(!Config.HLE && ((((opcode) >> 24) & 0xfe) == 0x4a))) {
 		// "hokuto no ken" / "Crash Bandicot 2" ...
 		// BIOS does not allow to return to GTE instructions
 		// (just skips it, supposedly because it's scheduled already)
 		// so we execute it here
 		psxCP2Regs *cp2 = (void *)(cp0 + 1);
-		psxCP2[psxRegs.code & 0x3f](cp2);
+		psxRegs.code = opcode;
+		psxCP2[opcode & 0x3f](cp2);
 	}
 
 	// Set the Cause
-	cp0->n.Cause = (cp0->n.Cause & 0x300) | code;
+	cp0->n.Cause = (cp0->n.Cause & 0x300) | cause;
 
 	// Set the EPC & PC
 	if (bd) {
@@ -237,7 +246,13 @@ void psxJumpTest() {
 }
 
 void psxExecuteBios() {
-	while (psxRegs.pc != 0x80030000)
-		psxCpu->ExecuteBlock();
+	int i;
+	for (i = 0; i < 5000000; i++) {
+		psxCpu->ExecuteBlock(EXEC_CALLER_BOOT);
+		if ((psxRegs.pc & 0xff800000) == 0x80000000)
+			break;
+	}
+	if (psxRegs.pc != 0x80030000)
+		SysPrintf("non-standard BIOS detected (%d, %08x)\n", i, psxRegs.pc);
 }