From 67740303f51ca3e5aa7edb19d1d2760990bf0b0c Mon Sep 17 00:00:00 2001
From: neonloop
Date: Sun, 29 Jan 2023 07:37:02 +0000
Subject: Adds dosbox-pure core

dosbox-pure does not support resume states, because it loads puremenu
before loading game. Savestates can also glitch loaded game.
---
 .../dosbox-pure/0001-add-auto-cycle-limit.patch    | 35 ++++++++++++++++++++++
 patches/dosbox-pure/1000-funkey-s-support.patch    |  4 +--
 2 files changed, 37 insertions(+), 2 deletions(-)
 create mode 100644 patches/dosbox-pure/0001-add-auto-cycle-limit.patch

(limited to 'patches')

diff --git a/patches/dosbox-pure/0001-add-auto-cycle-limit.patch b/patches/dosbox-pure/0001-add-auto-cycle-limit.patch
new file mode 100644
index 0000000..69baeb9
--- /dev/null
+++ b/patches/dosbox-pure/0001-add-auto-cycle-limit.patch
@@ -0,0 +1,35 @@
+diff --git a/dosbox_pure_libretro.cpp b/dosbox_pure_libretro.cpp
+index 6a03631..dc4f70d 100644
+--- a/dosbox_pure_libretro.cpp
++++ b/dosbox_pure_libretro.cpp
+@@ -451,15 +451,30 @@ void DBP_SetRealModeCycles()
+ 		(year >  1993 ? 60000 : // Pentium 90 MHz
+ 		Cycles1981to1993[year - 1981]))); // Matching speed for year
+ 
++#ifdef CYCLE_LIMIT
++	if (CPU_CycleMax > CYCLE_LIMIT)
++	{
++		CPU_CycleMax = CYCLE_LIMIT;
++		CPU_AutoDetermineMode &= ~(CPU_AUTODETERMINE_CYCLES|(CPU_AUTODETERMINE_CYCLES<<CPU_AUTODETERMINE_SHIFT));
++		CPU_CycleAutoAdjust = true;
++		// Switch to dynamic core
++		if (CPU_AutoDetermineMode & CPU_AUTODETERMINE_CORE)
++		{
++#else
++
+ 	// Switch to dynamic core for newer real mode games 
+ 	if (CPU_CycleMax >= 8192 && (CPU_AutoDetermineMode & CPU_AUTODETERMINE_CORE))
+ 	{
++#endif
+ 		#if (C_DYNAMIC_X86)
+ 		if (cpudecoder != CPU_Core_Dyn_X86_Run) { void CPU_Core_Dyn_X86_Cache_Init(bool); CPU_Core_Dyn_X86_Cache_Init(true); cpudecoder = CPU_Core_Dyn_X86_Run; }
+ 		#elif (C_DYNREC)
+ 		if (cpudecoder != CPU_Core_Dynrec_Run)  { void CPU_Core_Dynrec_Cache_Init(bool);  CPU_Core_Dynrec_Cache_Init(true);  cpudecoder = CPU_Core_Dynrec_Run;  }
+ 		#endif
+ 	}
++#ifdef CYCLE_LIMIT
++	}
++#endif
+ }
+ 
+ static void DBP_UnlockSpeed(bool unlock, int start_frame_skip = 0, bool skip_once = false)
diff --git a/patches/dosbox-pure/1000-funkey-s-support.patch b/patches/dosbox-pure/1000-funkey-s-support.patch
index 27ef8f7..59f7888 100644
--- a/patches/dosbox-pure/1000-funkey-s-support.patch
+++ b/patches/dosbox-pure/1000-funkey-s-support.patch
@@ -1,5 +1,5 @@
 diff --git a/Makefile b/Makefile
-index f0acd51..8ad5a68 100644
+index f0acd51..7b42e9b 100644
 --- a/Makefile
 +++ b/Makefile
 @@ -104,6 +104,16 @@ else ifeq ($(platform),ctr)
@@ -10,7 +10,7 @@ index f0acd51..8ad5a68 100644
 +  OUTNAME := dosbox_pure_libretro.so
 +  CXX     := $(CROSS_COMPILE)g++
 +  LDFLAGS := -Wl,--gc-sections -fno-ident
-+  COMMONFLAGS += -pthread
++  COMMONFLAGS += -pthread -DCYCLE_LIMIT=8200
 +  CPUFLAGS += -marm -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -march=armv7ve
 +  STRIPCMD := $(CROSS_COMPILE)strip --strip-all
 +  ifeq ($(DEBUG), 1)
-- 
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