From 88f7643f70681d211c71a30d845592d48b1b9bea Mon Sep 17 00:00:00 2001
From: lentillog <lentillog@gmail.com>
Date: Fri, 30 Sep 2016 23:44:49 -0700
Subject: [PATCH] (VITA) Dynarec working

---
 Makefile                     |  4 ++++
 Makefile.libretro            | 14 ++++++++------
 cpu/drc/cmn.c                | 10 ++++++++++
 cpu/drc/cmn.h                |  4 ++++
 platform/libretro/libretro.c | 18 ++++++++++++++++--
 5 files changed, 42 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index c7fbe9e..9b364dd 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,11 @@ TARGET ?= PicoDrive
 CFLAGS += -Wall 
 CFLAGS += -I. -DINLINE=inline
 ifndef DEBUG
+ifeq ($(platform), vita)
+CFLAGS += -O3 -DNDEBUG
+else
 CFLAGS += -O2 -DNDEBUG -ffunction-sections
+endif
 ifneq ($(APPLE),1)
 LDFLAGS += -Wl,--gc-sections
 endif
diff --git a/Makefile.libretro b/Makefile.libretro
index 3b7c0fe..b2759d8 100644
--- a/Makefile.libretro
+++ b/Makefile.libretro
@@ -263,8 +263,10 @@ else ifeq ($(platform), vita)
 	CC = arm-vita-eabi-gcc$(EXE_EXT)
 	AR = arm-vita-eabi-ar$(EXE_EXT)
 	CFLAGS += -DVITA
-	CFLAGS += -mfloat-abi=hard -ffast-math -mword-relocations -fno-optimize-sibling-calls
-	CFLAGS += -marm -mfpu=neon -mcpu=cortex-a9 -march=armv7-a
+	CFLAGS += -marm -mfpu=neon -mcpu=cortex-a9 -march=armv7-a -mfloat-abi=hard -ffast-math
+	CFLAGS += -fno-asynchronous-unwind-tables -ftree-vectorize -funroll-loops
+	CFLAGS += -mword-relocations -fno-unwind-tables
+	CFLAGS += -fno-optimize-sibling-calls
 	STATIC_LINKING = 1
 	NO_MMAP = 1
 	DONT_COMPILE_IN_ZLIB = 1
@@ -274,15 +276,15 @@ else ifeq ($(platform), vita)
 	asm_render = 1
 	asm_ym2612 = 1
 	asm_misc = 1
-	asm_cdpico = 0
-	asm_cdmemory = 0
+	asm_cdpico = 1
+	asm_cdmemory = 1
 	asm_mix = 1
 	use_cyclone = 1
 	use_fame = 0
 	use_drz80 = 1
 	use_cz80 = 0
-	use_sh2drc = 0
-	use_svpdrc = 0
+	use_sh2drc = 1
+	use_svpdrc = 1
 
 # Xbox 360
 else ifeq ($(platform), xenon)
diff --git a/cpu/drc/cmn.c b/cpu/drc/cmn.c
index a07dcbd..f788eca 100644
--- a/cpu/drc/cmn.c
+++ b/cpu/drc/cmn.c
@@ -12,6 +12,11 @@
 
 #ifdef _MSC_VER
 u8 tcache[DRC_TCACHE_SIZE];
+#elif defined(VITA)
+#include <psp2/kernel/sysmem.h>
+u8 *tcache;
+static int sceBlock;
+int getVMBlock();
 #else
 u8 __attribute__((aligned(4096))) tcache[DRC_TCACHE_SIZE];
 #endif
@@ -19,6 +24,11 @@ u8 __attribute__((aligned(4096))) tcache[DRC_TCACHE_SIZE];
 
 void drc_cmn_init(void)
 {
+#ifdef VITA
+   sceBlock = getVMBlock();
+   sceKernelGetMemBlockBase(sceBlock, (void **)&tcache);
+#endif
+
   int ret = plat_mem_set_exec(tcache, sizeof(tcache));
   elprintf(EL_STATUS, "drc_cmn_init: %p, %zd bytes: %d",
     tcache, sizeof(tcache), ret);
diff --git a/cpu/drc/cmn.h b/cpu/drc/cmn.h
index 4737b74..e6da6ea 100644
--- a/cpu/drc/cmn.h
+++ b/cpu/drc/cmn.h
@@ -5,7 +5,11 @@ typedef unsigned int   u32;
 
 #define DRC_TCACHE_SIZE         (2*1024*1024)
 
+#ifdef VITA
+extern u8 *tcache;
+#else
 extern u8 tcache[DRC_TCACHE_SIZE];
+#endif
 
 void drc_cmn_init(void);
 void drc_cmn_cleanup(void);
diff --git a/platform/libretro/libretro.c b/platform/libretro/libretro.c
index 581702c..4636361 100644
--- a/platform/libretro/libretro.c
+++ b/platform/libretro/libretro.c
@@ -38,6 +38,15 @@ void* linearMemAlign(size_t size, size_t alignment);
 void linearFree(void* mem);
 
 static int ctr_svchack_successful = 0;
+
+#elif defined(VITA)
+#define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
+
+#include <psp2/kernel/sysmem.h>
+static int sceBlock;
+int getVMBlock();
+int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
+
 #endif
 
 #include <pico/pico_int.h>
@@ -83,14 +92,16 @@ static void snd_write(int len);
 void cache_flush_d_inval_i(void *start, void *end)
 {
 #ifdef __arm__
+   size_t len = (char *)end - (char *)start;
 #if defined(__BLACKBERRY_QNX__)
    msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
 #elif defined(__MACH__)
-   size_t len = (char *)end - (char *)start;
    sys_dcache_flush(start, len);
    sys_icache_invalidate(start, len);
 #elif defined(_3DS)
    ctr_flush_invalidate_cache();
+#elif defined(VITA)
+   sceKernelSyncVMDomain(sceBlock, start, len);
 #else
    __clear_cache(start, end);
 #endif
@@ -444,7 +455,8 @@ int plat_mem_set_exec(void *ptr, size_t size)
       exit(1);
    }
 
-
+#elif defined(VITA)
+   int ret = sceKernelOpenVMDomain();
 #else
    int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
    if (ret != 0 && log_cb)
@@ -1251,6 +1263,8 @@ void retro_init(void)
 
 #ifdef _3DS
    ctr_svchack_successful = ctr_svchack_init();
+#elif defined(VITA)
+   sceBlock = getVMBlock();
 #endif
 
    PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
-- 
2.39.2