From 1da9b9ae28406f3bec5b2bd5905783971b991bec Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Sat, 2 Sep 2023 22:54:16 +0300
Subject: [PATCH] initial hle support for lightrec

---
 frontend/libretro.c              |  7 +------
 libpcsxcore/new_dynarec/emu_if.c |  3 ++-
 libpcsxcore/psxbios.c            | 10 ++++++++++
 libpcsxcore/r3000a.h             |  2 +-
 4 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/frontend/libretro.c b/frontend/libretro.c
index a115fc67..b1af9f15 100644
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -1948,18 +1948,13 @@ static void update_variables(bool in_flight)
 
    {
       R3000Acpu *prev_cpu = psxCpu;
-#if defined(LIGHTREC)
-      bool can_use_dynarec = found_bios;
-#else
-      bool can_use_dynarec = 1;
-#endif
 
 #ifdef _3DS
       if (!__ctr_svchax)
          Config.Cpu = CPU_INTERPRETER;
       else
 #endif
-      if (strcmp(var.value, "disabled") == 0 || !can_use_dynarec)
+      if (strcmp(var.value, "disabled") == 0)
          Config.Cpu = CPU_INTERPRETER;
       else if (strcmp(var.value, "enabled") == 0)
          Config.Cpu = CPU_DYNAREC;
diff --git a/libpcsxcore/new_dynarec/emu_if.c b/libpcsxcore/new_dynarec/emu_if.c
index f879ad8c..e21003c0 100644
--- a/libpcsxcore/new_dynarec/emu_if.c
+++ b/libpcsxcore/new_dynarec/emu_if.c
@@ -297,7 +297,8 @@ static void ari64_notify(enum R3000Anote note, void *data) {
 	case R3000ACPU_NOTIFY_BEFORE_SAVE:
 		break;
 	case R3000ACPU_NOTIFY_AFTER_LOAD:
-		ari64_reset();
+		if (data == NULL)
+			ari64_reset();
 		psxInt.Notify(note, data);
 		break;
 	}
diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c
index dc726e48..fdac5562 100644
--- a/libpcsxcore/psxbios.c
+++ b/libpcsxcore/psxbios.c
@@ -47,6 +47,8 @@
 #define PSXBIOS_LOG(...)
 #endif
 
+#define PTR_1 (void *)(size_t)1
+
 char *biosA0n[256] = {
 // 0x00
 	"open",		"lseek",	"read",		"write",
@@ -384,9 +386,13 @@ static inline void softCall(u32 pc) {
 	ra = 0x80001000;
 	psxRegs.CP0.n.SR &= ~0x404; // disable interrupts
 
+	psxCpu->Notify(R3000ACPU_NOTIFY_AFTER_LOAD, PTR_1);
+
 	while (pc0 != 0x80001000 && ++lim < 1000000)
 		psxCpu->ExecuteBlock(EXEC_CALLER_HLE);
 
+	psxCpu->Notify(R3000ACPU_NOTIFY_BEFORE_SAVE, PTR_1);
+
 	if (lim == 1000000)
 		PSXBIOS_LOG("softCall @%x hit lim\n", pc);
 	ra = sra;
@@ -403,9 +409,13 @@ static inline void softCallInException(u32 pc) {
 		return;
 	ra = 0x80001000;
 
+	psxCpu->Notify(R3000ACPU_NOTIFY_AFTER_LOAD, PTR_1);
+
 	while (!returned_from_exception() && pc0 != 0x80001000 && ++lim < 1000000)
 		psxCpu->ExecuteBlock(EXEC_CALLER_HLE);
 
+	psxCpu->Notify(R3000ACPU_NOTIFY_BEFORE_SAVE, PTR_1);
+
 	if (lim == 1000000)
 		PSXBIOS_LOG("softCallInException @%x hit lim\n", pc);
 	if (pc0 == 0x80001000)
diff --git a/libpcsxcore/r3000a.h b/libpcsxcore/r3000a.h
index 912a41f6..fb5e1db6 100644
--- a/libpcsxcore/r3000a.h
+++ b/libpcsxcore/r3000a.h
@@ -45,7 +45,7 @@ enum R3000Aexception {
 enum R3000Anote {
 	R3000ACPU_NOTIFY_CACHE_ISOLATED = 0,
 	R3000ACPU_NOTIFY_CACHE_UNISOLATED = 1,
-	R3000ACPU_NOTIFY_BEFORE_SAVE,
+	R3000ACPU_NOTIFY_BEFORE_SAVE,  // data arg - hle if non-null
 	R3000ACPU_NOTIFY_AFTER_LOAD,
 };
 
-- 
2.39.2