Create memmap_win32.c for Win32 systems - a mman wrapper
This commit is contained in:
twinaphex
parent
6ddc6f494d
commit
5820d8be94
42
Makefile
42
Makefile
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@ -2,6 +2,8 @@ DEBUG=0
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HAVE_GRIFFIN=0
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FRONTEND_SUPPORTS_RGB565=1
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FORCE_32BIT_ARCH=0
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HAVE_MMAP=0
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HAVE_MMAP_WIN32=0
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ifneq ($(EMSCRIPTEN),)
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platform = emscripten
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@ -69,14 +71,18 @@ ifeq ($(platform), unix)
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ifneq ($(findstring Haiku,$(shell uname -a)),)
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LIBM :=
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endif
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CFLAGS += $(FORCE_32BIT) -DHAVE_MMAP
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CFLAGS += $(FORCE_32BIT)
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LDFLAGS := -Wl,--no-undefined
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ifeq ($(HAVE_DYNAREC),1)
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HAVE_MMAP = 1
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endif
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# OS X
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else ifeq ($(platform), osx)
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TARGET := $(TARGET_NAME)_libretro.dylib
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fpic := -fPIC
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ifeq ($(arch),ppc)
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CFLAGS += -DBLARGG_BIG_ENDIAN=1 -D__ppc__
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CFLAGS += -DMSB_FIRST -D__ppc__
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endif
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OSXVER = `sw_vers -productVersion | cut -d. -f 2`
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OSX_LT_MAVERICKS = `(( $(OSXVER) <= 9)) && echo "YES"`
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@ -84,7 +90,10 @@ else ifeq ($(platform), osx)
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fpic += -mmacosx-version-min=10.5
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endif
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SHARED := -dynamiclib
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CFLAGS += -DHAVE_MMAP
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ifeq ($(HAVE_DYNAREC),1)
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HAVE_MMAP = 1
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endif
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# iOS
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else ifeq ($(platform), ios)
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@ -98,7 +107,7 @@ else ifeq ($(platform), ios)
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endif
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CC = clang -arch armv7 -isysroot $(IOSSDK)
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CFLAGS += -DIOS -DHAVE_MMAP -DHAVE_POSIX_MEMALIGN -marm
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CFLAGS += -DIOS -DHAVE_POSIX_MEMALIGN -marm
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OSXVER = `sw_vers -productVersion | cut -d. -f 2`
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OSX_LT_MAVERICKS = `(( $(OSXVER) <= 9)) && echo "YES"`
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ifeq ($(OSX_LT_MAVERICKS),"YES")
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@ -111,7 +120,7 @@ else ifeq ($(platform), qnx)
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TARGET := $(TARGET_NAME)_libretro_qnx.so
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fpic := -fPIC
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SHARED := -shared -Wl,--version-script=link.T
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CFLAGS += -DHAVE_MMAP
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HAVE_MMAP = 1
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CC = qcc -Vgcc_ntoarmv7le
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AR = qcc -Vgcc_ntoarmv7le
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@ -122,7 +131,7 @@ else ifeq ($(platform), ps3)
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TARGET := $(TARGET_NAME)_libretro_ps3.a
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CC = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-gcc.exe
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AR = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-ar.exe
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CFLAGS += -DBLARGG_BIG_ENDIAN=1 -D__ppc__
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CFLAGS += -DMSB_FIRST -D__ppc__
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STATIC_LINKING = 1
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# sncps3
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@ -130,7 +139,7 @@ else ifeq ($(platform), sncps3)
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TARGET := $(TARGET_NAME)_libretro_ps3.a
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CC = $(CELL_SDK)/host-win32/sn/bin/ps3ppusnc.exe
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AR = $(CELL_SDK)/host-win32/sn/bin/ps3snarl.exe
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CFLAGS += -DBLARGG_BIG_ENDIAN=1 -D__ppc__
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CFLAGS += -DMSB_FIRST -D__ppc__
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STATIC_LINKING = 1
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# Lightweight PS3 Homebrew SDK
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@ -138,7 +147,7 @@ else ifeq ($(platform), psl1ght)
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TARGET := $(TARGET_NAME)_libretro_psl1ght.a
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CC = $(PS3DEV)/ppu/bin/ppu-gcc$(EXE_EXT)
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AR = $(PS3DEV)/ppu/bin/ppu-ar$(EXE_EXT)
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CFLAGS += -DBLARGG_BIG_ENDIAN=1 -D__ppc__
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CFLAGS += -DMSB_FIRST -D__ppc__
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STATIC_LINKING = 1
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# PSP
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@ -162,7 +171,7 @@ else ifeq ($(platform), ngc)
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TARGET := $(TARGET_NAME)_libretro_ngc.a
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CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
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AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
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CFLAGS += -DGEKKO -DHW_DOL -mrvl -mcpu=750 -meabi -mhard-float -DBLARGG_BIG_ENDIAN=1 -D__ppc__
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CFLAGS += -DGEKKO -DHW_DOL -mrvl -mcpu=750 -meabi -mhard-float -DMSB_FIRST -D__ppc__
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STATIC_LINKING = 1
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# Nintendo Wii
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@ -170,7 +179,7 @@ else ifeq ($(platform), wii)
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TARGET := $(TARGET_NAME)_libretro_wii.a
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CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
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AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
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CFLAGS += -DGEKKO -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float -DBLARGG_BIG_ENDIAN=1 -D__ppc__
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CFLAGS += -DGEKKO -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float -DMSB_FIRST -D__ppc__
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STATIC_LINKING = 1
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# ARM
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@ -200,7 +209,7 @@ else ifneq (,$(findstring armv,$(platform)))
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ASFLAGS += -mfloat-abi=hard
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endif
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CFLAGS += -DARM
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CFLAGS += -DHAVE_MMAP
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HAVE_MMAP = 1
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# emscripten
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else ifeq ($(platform), emscripten)
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@ -212,7 +221,16 @@ else
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CC = gcc
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SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=link.T
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CFLAGS += -D__WIN32__ -D__WIN32_LIBRETRO__
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# CFLAGS += -DHAVE_MMAP
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ifeq ($(HAVE_DYNAREC),1)
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HAVE_MMAP = 1
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HAVE_MMAP_WIN32 = 1
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endif
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endif
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ifeq ($(HAVE_MMAP), 1)
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CFLAGS += -DHAVE_MMAP
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endif
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ifeq ($(HAVE_DYNAREC), 1)
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@ -29,14 +29,19 @@ endif
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ifeq ($(CPU_ARCH), arm)
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SOURCES_ASM += $(CORE_DIR)/arm/arm_stub.S
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endif
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endif
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ifeq ($(CPU_ARCH), arm)
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ifeq ($(CPU_ARCH_ARM_BLENDING_OPTS),1)
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CFLAGS += -DARM_ARCH_BLENDING_OPTS
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SOURCES_ASM += $(CORE_DIR)/arm/video_blend.S
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endif
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endif
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ifeq ($(HAVE_MMAP_WIN32),1)
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SOURCES_C += $(CORE_DIR)/memmap_win32.c
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endif
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INCFLAGS := -I$(CORE_DIR)
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@ -6,6 +6,7 @@
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#include "common.h"
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#include "libco.h"
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#include "libretro.h"
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#include "memmap.h"
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#ifndef MAX_PATH
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#define MAX_PATH (512)
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@ -99,10 +100,6 @@ void retro_get_system_av_info(struct retro_system_av_info* info)
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info->timing.sample_rate = GBA_SOUND_FREQUENCY;
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}
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#ifdef HAVE_MMAP
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#include <sys/mman.h>
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#endif
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void retro_init(void)
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{
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init_gamepak_buffer();
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@ -0,0 +1,60 @@
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#ifndef _MEMMAP_H
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#define _MEMMAP_H
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#ifdef HAVE_MMAP
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#ifdef _WIN32
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#ifndef _WIN32_WINNT // Allow use of features specific to Windows XP or later.
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#define _WIN32_WINNT 0x0501 // Change this to the appropriate value to target other versions of Windows.
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#endif
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/* All the headers include this file. */
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#ifndef _MSC_VER
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#include <_mingw.h>
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#endif
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define PROT_NONE 0
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#define PROT_READ 1
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#define PROT_WRITE 2
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#define PROT_EXEC 4
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#define MAP_FILE 0
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#define MAP_SHARED 1
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#define MAP_PRIVATE 2
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#define MAP_TYPE 0xf
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#define MAP_FIXED 0x10
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#define MAP_ANONYMOUS 0x20
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#define MAP_ANON MAP_ANONYMOUS
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#define MAP_FAILED ((void *)-1)
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/* Flags for msync. */
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#define MS_ASYNC 1
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#define MS_SYNC 2
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#define MS_INVALIDATE 4
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void* mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
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int munmap(void *addr, size_t len);
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int mprotect(void *addr, size_t len, int prot);
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int msync(void *addr, size_t len, int flags);
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int mlock(const void *addr, size_t len);
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int munlock(const void *addr, size_t len);
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#ifdef __cplusplus
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};
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#endif
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#else
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#include <sys/mman.h>
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#endif
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#endif
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#endif
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@ -0,0 +1,173 @@
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#include <windows.h>
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#include <errno.h>
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#include <io.h>
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#include "mman.h"
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#ifndef FILE_MAP_EXECUTE
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#define FILE_MAP_EXECUTE 0x0020
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#endif /* FILE_MAP_EXECUTE */
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static int __map_mman_error(const DWORD err, const int deferr)
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{
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if (err == 0)
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return 0;
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/* TODO: implement */
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return err;
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}
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static DWORD __map_mmap_prot_page(const int prot)
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{
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DWORD protect = 0;
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if (prot == PROT_NONE)
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return 0;
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if ((prot & PROT_EXEC) != 0)
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protect = ((prot & PROT_WRITE) != 0) ?
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PAGE_EXECUTE_READWRITE : PAGE_EXECUTE_READ;
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else
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protect = ((prot & PROT_WRITE) != 0) ?
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PAGE_READWRITE : PAGE_READONLY;
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return protect;
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}
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static DWORD __map_mmap_prot_file(const int prot)
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{
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DWORD desiredAccess = 0;
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if (prot == PROT_NONE)
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return 0;
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if ((prot & PROT_READ) != 0)
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desiredAccess |= FILE_MAP_READ;
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if ((prot & PROT_WRITE) != 0)
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desiredAccess |= FILE_MAP_WRITE;
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if ((prot & PROT_EXEC) != 0)
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desiredAccess |= FILE_MAP_EXECUTE;
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return desiredAccess;
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}
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void* mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off)
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{
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HANDLE fm, h;
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void * map = MAP_FAILED;
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#ifdef _MSC_VER
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#pragma warning(push)
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#pragma warning(disable: 4293)
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#endif
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const DWORD dwFileOffsetLow = (sizeof(off_t) <= sizeof(DWORD)) ?
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(DWORD)off : (DWORD)(off & 0xFFFFFFFFL);
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const DWORD dwFileOffsetHigh = (sizeof(off_t) <= sizeof(DWORD)) ?
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(DWORD)0 : (DWORD)((off >> 32) & 0xFFFFFFFFL);
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const DWORD protect = __map_mmap_prot_page(prot);
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const DWORD desiredAccess = __map_mmap_prot_file(prot);
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const off_t maxSize = off + (off_t)len;
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const DWORD dwMaxSizeLow = (sizeof(off_t) <= sizeof(DWORD)) ?
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(DWORD)maxSize : (DWORD)(maxSize & 0xFFFFFFFFL);
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const DWORD dwMaxSizeHigh = (sizeof(off_t) <= sizeof(DWORD)) ?
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(DWORD)0 : (DWORD)((maxSize >> 32) & 0xFFFFFFFFL);
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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errno = 0;
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if (len == 0
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/* Unsupported flag combinations */
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|| (flags & MAP_FIXED) != 0
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/* Usupported protection combinations */
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|| prot == PROT_EXEC)
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{
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errno = EINVAL;
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return MAP_FAILED;
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}
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h = ((flags & MAP_ANONYMOUS) == 0) ?
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(HANDLE)_get_osfhandle(fildes) : INVALID_HANDLE_VALUE;
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if ((flags & MAP_ANONYMOUS) == 0 && h == INVALID_HANDLE_VALUE)
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{
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errno = EBADF;
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return MAP_FAILED;
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}
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fm = CreateFileMapping(h, NULL, protect, dwMaxSizeHigh, dwMaxSizeLow, NULL);
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if (!fm)
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goto error;
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map = MapViewOfFile(fm, desiredAccess, dwFileOffsetHigh, dwFileOffsetLow, len);
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CloseHandle(fm);
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if (!map)
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goto error;
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return map;
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error:
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errno = __map_mman_error(GetLastError(), EPERM);
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return MAP_FAILED;
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}
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int munmap(void *addr, size_t len)
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{
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if (UnmapViewOfFile(addr))
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return 0;
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errno = __map_mman_error(GetLastError(), EPERM);
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return -1;
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}
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int mprotect(void *addr, size_t len, int prot)
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{
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DWORD newProtect = __map_mmap_prot_page(prot);
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DWORD oldProtect = 0;
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if (VirtualProtect(addr, len, newProtect, &oldProtect))
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return 0;
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errno = __map_mman_error(GetLastError(), EPERM);
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return -1;
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}
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int msync(void *addr, size_t len, int flags)
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{
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if (FlushViewOfFile(addr, len))
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return 0;
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errno = __map_mman_error(GetLastError(), EPERM);
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return -1;
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}
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int mlock(const void *addr, size_t len)
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{
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if (VirtualLock((LPVOID)addr, len))
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return 0;
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errno = __map_mman_error(GetLastError(), EPERM);
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return -1;
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}
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int munlock(const void *addr, size_t len)
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{
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if (VirtualUnlock((LPVOID)addr, len))
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return 0;
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errno = __map_mman_error(GetLastError(), EPERM);
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return -1;
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}
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