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/* |
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* sysdeps.h - System dependent definitions for Unix |
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* |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#ifndef SYSDEPS_H |
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#define SYSDEPS_H |
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|
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#ifndef __STDC__ |
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#error "Your compiler is not ANSI. Get a real one." |
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#endif |
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|
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#include "config.h" |
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#include "user_strings_unix.h" |
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|
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#ifndef STDC_HEADERS |
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#error "You don't have ANSI C header files." |
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#endif |
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|
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#ifdef HAVE_UNISTD_H |
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# include <sys/types.h> |
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# include <unistd.h> |
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#endif |
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|
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#include <netinet/in.h> |
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#include <assert.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#ifdef HAVE_PTHREADS |
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# include <pthread.h> |
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#endif |
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|
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#ifdef HAVE_FCNTL_H |
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# include <fcntl.h> |
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#endif |
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|
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#ifdef TIME_WITH_SYS_TIME |
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# include <sys/time.h> |
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# include <time.h> |
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#else |
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# ifdef HAVE_SYS_TIME_H |
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# include <sys/time.h> |
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# else |
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# include <time.h> |
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# endif |
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#endif |
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|
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|
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#ifdef ENABLE_NATIVE_M68K |
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|
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/* Mac and host address space are the same */ |
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#define REAL_ADDRESSING 1 |
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|
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/* Using 68k natively */ |
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#define EMULATED_68K 0 |
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|
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/* Mac ROM is not write protected */ |
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#define ROM_IS_WRITE_PROTECTED 0 |
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#define USE_SCRATCHMEM_SUBTERFUGE 1 |
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|
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#else |
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|
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/* Mac and host address space are distinct */ |
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#ifndef REAL_ADDRESSING |
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#define REAL_ADDRESSING 0 |
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#endif |
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|
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/* Using 68k emulator */ |
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#define EMULATED_68K 1 |
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|
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/* The m68k emulator uses a prefetch buffer ? */ |
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#define USE_PREFETCH_BUFFER 0 |
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|
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/* Mac ROM is write protected when banked memory is used */ |
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#if REAL_ADDRESSING || DIRECT_ADDRESSING |
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# define ROM_IS_WRITE_PROTECTED 0 |
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# define USE_SCRATCHMEM_SUBTERFUGE 1 |
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#else |
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# define ROM_IS_WRITE_PROTECTED 1 |
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#endif |
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|
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#endif |
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|
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/* Direct Addressing requires Video on SEGV signals in plain X11 mode */ |
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#if DIRECT_ADDRESSING && (!ENABLE_VOSF && !USE_SDL_VIDEO) |
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# undef ENABLE_VOSF |
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# define ENABLE_VOSF 1 |
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#endif |
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|
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/* ExtFS is supported */ |
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#define SUPPORTS_EXTFS 1 |
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|
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/* BSD socket API supported */ |
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#define SUPPORTS_UDP_TUNNEL 1 |
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|
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/* Use the CPU emulator to check for periodic tasks? */ |
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#ifdef HAVE_PTHREADS |
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#define USE_PTHREADS_SERVICES |
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#endif |
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#if EMULATED_68K |
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#if defined(__NetBSD__) |
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#define USE_CPU_EMUL_SERVICES |
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#endif |
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#endif |
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#ifdef USE_CPU_EMUL_SERVICES |
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#undef USE_PTHREADS_SERVICES |
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#endif |
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|
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|
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/* Data types */ |
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typedef unsigned char uint8; |
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typedef signed char int8; |
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#if SIZEOF_SHORT == 2 |
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typedef unsigned short uint16; |
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typedef short int16; |
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#elif SIZEOF_INT == 2 |
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typedef unsigned int uint16; |
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typedef int int16; |
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#else |
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#error "No 2 byte type, you lose." |
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#endif |
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#if SIZEOF_INT == 4 |
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typedef unsigned int uint32; |
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typedef int int32; |
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#elif SIZEOF_LONG == 4 |
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typedef unsigned long uint32; |
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typedef long int32; |
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#else |
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#error "No 4 byte type, you lose." |
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#endif |
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#if SIZEOF_LONG == 8 |
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typedef unsigned long uint64; |
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typedef long int64; |
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#define VAL64(a) (a ## l) |
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#define UVAL64(a) (a ## ul) |
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#elif SIZEOF_LONG_LONG == 8 |
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typedef unsigned long long uint64; |
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typedef long long int64; |
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#define VAL64(a) (a ## LL) |
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#define UVAL64(a) (a ## uLL) |
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#else |
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#error "No 8 byte type, you lose." |
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#endif |
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#if SIZEOF_VOID_P == 4 |
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typedef uint32 uintptr; |
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typedef int32 intptr; |
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#elif SIZEOF_VOID_P == 8 |
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typedef uint64 uintptr; |
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typedef int64 intptr; |
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#else |
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#error "Unsupported size of pointer" |
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#endif |
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|
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#ifndef HAVE_LOFF_T |
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typedef off_t loff_t; |
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#endif |
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#ifndef HAVE_CADDR_T |
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typedef char * caddr_t; |
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#endif |
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|
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/* Time data type for Time Manager emulation */ |
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#ifdef HAVE_CLOCK_GETTIME |
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typedef struct timespec tm_time_t; |
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#else |
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typedef struct timeval tm_time_t; |
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#endif |
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|
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/* Define codes for all the float formats that we know of. |
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* Though we only handle IEEE format. */ |
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#define UNKNOWN_FLOAT_FORMAT 0 |
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#define IEEE_FLOAT_FORMAT 1 |
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#define VAX_FLOAT_FORMAT 2 |
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#define IBM_FLOAT_FORMAT 3 |
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#define C4X_FLOAT_FORMAT 4 |
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|
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/* UAE CPU data types */ |
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#define uae_s8 int8 |
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#define uae_u8 uint8 |
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#define uae_s16 int16 |
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#define uae_u16 uint16 |
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#define uae_s32 int32 |
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#define uae_u32 uint32 |
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#define uae_s64 int64 |
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#define uae_u64 uint64 |
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typedef uae_u32 uaecptr; |
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|
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/* Alignment restrictions */ |
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#if defined(__i386__) || defined(__powerpc__) || defined(__m68k__) || defined(__x86_64__) |
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# define CPU_CAN_ACCESS_UNALIGNED |
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#endif |
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|
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/* Timing functions */ |
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extern uint64 GetTicks_usec(void); |
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extern void Delay_usec(uint32 usec); |
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|
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/* Spinlocks */ |
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#ifdef __GNUC__ |
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|
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#if defined(__powerpc__) || defined(__ppc__) |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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int ret; |
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__asm__ __volatile__("0: lwarx %0,0,%1\n" |
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" xor. %0,%3,%0\n" |
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" bne 1f\n" |
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" stwcx. %2,0,%1\n" |
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" bne- 0b\n" |
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"1: " |
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: "=&r" (ret) |
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: "r" (p), "r" (1), "r" (0) |
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: "cr0", "memory"); |
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return ret; |
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} |
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#endif |
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|
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/* FIXME: SheepShaver occasionnally hangs with those locks */ |
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#if 0 && (defined(__i386__) || defined(__x86_64__)) |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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long int ret; |
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/* Note: the "xchg" instruction does not need a "lock" prefix */ |
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__asm__ __volatile__("xchgl %k0, %1" |
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: "=r" (ret), "=m" (*p) |
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: "0" (1), "m" (*p) |
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: "memory"); |
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return ret; |
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} |
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#endif |
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|
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#ifdef __s390__ |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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int ret; |
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|
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__asm__ __volatile__("0: cs %0,%1,0(%2)\n" |
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" jl 0b" |
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: "=&d" (ret) |
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: "r" (1), "a" (p), "0" (*p) |
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: "cc", "memory" ); |
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return ret; |
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} |
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#endif |
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|
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#ifdef __alpha__ |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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int ret; |
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unsigned long one; |
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|
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__asm__ __volatile__("0: mov 1,%2\n" |
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" ldl_l %0,%1\n" |
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" stl_c %2,%1\n" |
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" beq %2,1f\n" |
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".subsection 2\n" |
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"1: br 0b\n" |
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".previous" |
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: "=r" (ret), "=m" (*p), "=r" (one) |
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: "m" (*p)); |
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return ret; |
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} |
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#endif |
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|
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#ifdef __sparc__ |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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int ret; |
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|
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__asm__ __volatile__("ldstub [%1], %0" |
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: "=r" (ret) |
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: "r" (p) |
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: "memory"); |
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|
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return (ret ? 1 : 0); |
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} |
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#endif |
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|
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#ifdef __arm__ |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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register unsigned int ret; |
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__asm__ __volatile__("swp %0, %1, [%2]" |
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: "=r"(ret) |
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: "0"(1), "r"(p)); |
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|
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return ret; |
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} |
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#endif |
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|
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#endif /* __GNUC__ */ |
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|
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typedef volatile int spinlock_t; |
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|
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static const spinlock_t SPIN_LOCK_UNLOCKED = 0; |
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|
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#if HAVE_TEST_AND_SET |
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#define HAVE_SPINLOCKS 1 |
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static inline void spin_lock(spinlock_t *lock) |
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{ |
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while (testandset(lock)); |
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} |
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|
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static inline void spin_unlock(spinlock_t *lock) |
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{ |
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*lock = 0; |
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} |
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|
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static inline int spin_trylock(spinlock_t *lock) |
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{ |
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return !testandset(lock); |
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} |
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#else |
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static inline void spin_lock(spinlock_t *lock) |
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{ |
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} |
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|
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static inline void spin_unlock(spinlock_t *lock) |
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{ |
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} |
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|
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static inline int spin_trylock(spinlock_t *lock) |
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{ |
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return 1; |
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} |
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#endif |
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|
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/* X11 display fast locks */ |
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#ifdef HAVE_SPINLOCKS |
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#define X11_LOCK_TYPE spinlock_t |
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#define X11_LOCK_INIT SPIN_LOCK_UNLOCKED |
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#define XDisplayLock() spin_lock(&x_display_lock) |
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#define XDisplayUnlock() spin_unlock(&x_display_lock) |
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#elif defined(HAVE_PTHREADS) |
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#define X11_LOCK_TYPE pthread_mutex_t |
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#define X11_LOCK_INIT PTHREAD_MUTEX_INITIALIZER |
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#define XDisplayLock() pthread_mutex_lock(&x_display_lock); |
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#define XDisplayUnlock() pthread_mutex_unlock(&x_display_lock); |
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#else |
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#define XDisplayLock() |
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#define XDisplayUnlock() |
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#endif |
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#ifdef X11_LOCK_TYPE |
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extern X11_LOCK_TYPE x_display_lock; |
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#endif |
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|
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#ifdef HAVE_PTHREADS |
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/* Centralized pthread attribute setup */ |
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void Set_pthread_attr(pthread_attr_t *attr, int priority); |
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#endif |
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|
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/* UAE CPU defines */ |
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#ifdef WORDS_BIGENDIAN |
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|
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#ifdef CPU_CAN_ACCESS_UNALIGNED |
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|
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/* Big-endian CPUs which can do unaligned accesses */ |
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static inline uae_u32 do_get_mem_long(uae_u32 *a) {return *a;} |
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static inline uae_u32 do_get_mem_word(uae_u16 *a) {return *a;} |
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static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {*a = v;} |
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static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {*a = v;} |
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|
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#else /* CPU_CAN_ACCESS_UNALIGNED */ |
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|
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#ifdef sgi |
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/* The SGI MIPSPro compilers can do unaligned accesses given enough hints. |
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* They will automatically inline these routines. */ |
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#ifdef __cplusplus |
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extern "C" { /* only the C compiler does unaligned accesses */ |
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#endif |
| 392 |
extern uae_u32 do_get_mem_long(uae_u32 *a); |
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extern uae_u32 do_get_mem_word(uae_u16 *a); |
| 394 |
extern void do_put_mem_long(uae_u32 *a, uae_u32 v); |
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extern void do_put_mem_word(uae_u16 *a, uae_u32 v); |
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#ifdef __cplusplus |
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} |
| 398 |
#endif |
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|
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#else /* sgi */ |
| 401 |
|
| 402 |
/* Big-endian CPUs which can not do unaligned accesses (this is not the most efficient way to do this...) */ |
| 403 |
static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint8 *b = (uint8 *)a; return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];} |
| 404 |
static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint8 *b = (uint8 *)a; return (b[0] << 8) | b[1];} |
| 405 |
static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 24; b[1] = v >> 16; b[2] = v >> 8; b[3] = v;} |
| 406 |
static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 8; b[1] = v;} |
| 407 |
#endif /* sgi */ |
| 408 |
|
| 409 |
#endif /* CPU_CAN_ACCESS_UNALIGNED */ |
| 410 |
|
| 411 |
#else /* WORDS_BIGENDIAN */ |
| 412 |
|
| 413 |
#if defined(__i386__) || defined(__x86_64__) |
| 414 |
|
| 415 |
/* Intel x86 */ |
| 416 |
#define X86_PPRO_OPT |
| 417 |
static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint32 retval; __asm__ ("bswap %0" : "=r" (retval) : "0" (*a) : "cc"); return retval;} |
| 418 |
#ifdef X86_PPRO_OPT |
| 419 |
static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint32 retval; __asm__ ("movzwl %w1,%k0\n\tshll $16,%k0\n\tbswapl %k0\n" : "=&r" (retval) : "m" (*a) : "cc"); return retval;} |
| 420 |
#else |
| 421 |
static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint32 retval; __asm__ ("xorl %k0,%k0\n\tmovw %w1,%w0\n\trolw $8,%w0" : "=&r" (retval) : "m" (*a) : "cc"); return retval;} |
| 422 |
#endif |
| 423 |
#define HAVE_GET_WORD_UNSWAPPED |
| 424 |
#define do_get_mem_word_unswapped(a) ((uae_u32)*((uae_u16 *)(a))) |
| 425 |
static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {__asm__ ("bswap %0" : "=r" (v) : "0" (v) : "cc"); *a = v;} |
| 426 |
#ifdef X86_PPRO_OPT |
| 427 |
static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {__asm__ ("bswapl %0" : "=&r" (v) : "0" (v << 16) : "cc"); *a = v;} |
| 428 |
#else |
| 429 |
static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {__asm__ ("rolw $8,%0" : "=r" (v) : "0" (v) : "cc"); *a = v;} |
| 430 |
#endif |
| 431 |
#define HAVE_OPTIMIZED_BYTESWAP_32 |
| 432 |
/* bswap doesn't affect condition codes */ |
| 433 |
static inline uae_u32 do_byteswap_32(uae_u32 v) {__asm__ ("bswap %0" : "=r" (v) : "0" (v)); return v;} |
| 434 |
#define HAVE_OPTIMIZED_BYTESWAP_16 |
| 435 |
#ifdef X86_PPRO_OPT |
| 436 |
static inline uae_u32 do_byteswap_16(uae_u32 v) {__asm__ ("bswapl %0" : "=&r" (v) : "0" (v << 16) : "cc"); return v;} |
| 437 |
#else |
| 438 |
static inline uae_u32 do_byteswap_16(uae_u32 v) {__asm__ ("rolw $8,%0" : "=r" (v) : "0" (v) : "cc"); return v;} |
| 439 |
#endif |
| 440 |
|
| 441 |
#elif defined(CPU_CAN_ACCESS_UNALIGNED) |
| 442 |
|
| 443 |
/* Other little-endian CPUs which can do unaligned accesses */ |
| 444 |
static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint32 x = *a; return (x >> 24) | (x >> 8) & 0xff00 | (x << 8) & 0xff0000 | (x << 24);} |
| 445 |
static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint16 x = *a; return (x >> 8) | (x << 8);} |
| 446 |
static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {*a = (v >> 24) | (v >> 8) & 0xff00 | (v << 8) & 0xff0000 | (v << 24);} |
| 447 |
static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {*a = (v >> 8) | (v << 8);} |
| 448 |
|
| 449 |
#else /* CPU_CAN_ACCESS_UNALIGNED */ |
| 450 |
|
| 451 |
/* Other little-endian CPUs which can not do unaligned accesses (this needs optimization) */ |
| 452 |
static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint8 *b = (uint8 *)a; return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];} |
| 453 |
static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint8 *b = (uint8 *)a; return (b[0] << 8) | b[1];} |
| 454 |
static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 24; b[1] = v >> 16; b[2] = v >> 8; b[3] = v;} |
| 455 |
static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 8; b[1] = v;} |
| 456 |
|
| 457 |
#endif /* CPU_CAN_ACCESS_UNALIGNED */ |
| 458 |
|
| 459 |
#endif /* WORDS_BIGENDIAN */ |
| 460 |
|
| 461 |
#ifndef HAVE_OPTIMIZED_BYTESWAP_32 |
| 462 |
static inline uae_u32 do_byteswap_32(uae_u32 v) |
| 463 |
{ return (((v >> 24) & 0xff) | ((v >> 8) & 0xff00) | ((v & 0xff) << 24) | ((v & 0xff00) << 8)); } |
| 464 |
#endif |
| 465 |
|
| 466 |
#ifndef HAVE_OPTIMIZED_BYTESWAP_16 |
| 467 |
static inline uae_u32 do_byteswap_16(uae_u32 v) |
| 468 |
{ return (((v >> 8) & 0xff) | ((v & 0xff) << 8)); } |
| 469 |
#endif |
| 470 |
|
| 471 |
#define do_get_mem_byte(a) ((uae_u32)*((uae_u8 *)(a))) |
| 472 |
#define do_put_mem_byte(a, v) (*(uae_u8 *)(a) = (v)) |
| 473 |
|
| 474 |
#define call_mem_get_func(func, addr) ((*func)(addr)) |
| 475 |
#define call_mem_put_func(func, addr, v) ((*func)(addr, v)) |
| 476 |
#define __inline__ inline |
| 477 |
#define CPU_EMU_SIZE 0 |
| 478 |
#undef NO_INLINE_MEMORY_ACCESS |
| 479 |
#undef MD_HAVE_MEM_1_FUNCS |
| 480 |
#define ENUMDECL typedef enum |
| 481 |
#define ENUMNAME(name) name |
| 482 |
#define write_log printf |
| 483 |
|
| 484 |
#if defined(X86_ASSEMBLY) || defined(X86_64_ASSEMBLY) |
| 485 |
#define ASM_SYM_FOR_FUNC(a) __asm__(a) |
| 486 |
#else |
| 487 |
#define ASM_SYM_FOR_FUNC(a) |
| 488 |
#endif |
| 489 |
|
| 490 |
#ifndef REGPARAM |
| 491 |
# define REGPARAM |
| 492 |
#endif |
| 493 |
#define REGPARAM2 |
| 494 |
|
| 495 |
#endif |
