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root/cebix/SheepShaver/src/Unix/sysdeps.h
Revision: 1.12
Committed: 2003-10-26T13:59:02Z (21 years ago) by gbeauche
Content type: text/plain
Branch: MAIN
Changes since 1.11: +2 -1 lines
Log Message:
Rewrite interrupts handling code so that the emulator can work with a
predecode cache. This implies to run in interpreted mode only while
processing EmulOps or other native (nested) runs.

Note that the FLIGHT_RECORDER with a predecode cache gets slower than
without caching at all.

File Contents

# User Rev Content
1 cebix 1.1 /*
2     * sysdeps.h - System dependent definitions for Linux
3     *
4     * SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig
5     *
6     * This program is free software; you can redistribute it and/or modify
7     * it under the terms of the GNU General Public License as published by
8     * the Free Software Foundation; either version 2 of the License, or
9     * (at your option) any later version.
10     *
11     * This program is distributed in the hope that it will be useful,
12     * but WITHOUT ANY WARRANTY; without even the implied warranty of
13     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14     * GNU General Public License for more details.
15     *
16     * You should have received a copy of the GNU General Public License
17     * along with this program; if not, write to the Free Software
18     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19     */
20    
21     #ifndef SYSDEPS_H
22     #define SYSDEPS_H
23    
24     #ifndef __STDC__
25     #error "Your compiler is not ANSI. Get a real one."
26     #endif
27    
28     #include "config.h"
29     #include "user_strings_unix.h"
30    
31     #ifndef STDC_HEADERS
32     #error "You don't have ANSI C header files."
33     #endif
34    
35     #ifdef HAVE_UNISTD_H
36     # include <sys/types.h>
37     # include <unistd.h>
38     #endif
39    
40     #include <netinet/in.h>
41     #include <assert.h>
42     #include <stdio.h>
43     #include <stdlib.h>
44     #include <string.h>
45     #include <signal.h>
46    
47     #ifdef HAVE_FCNTL_H
48     # include <fcntl.h>
49     #endif
50    
51     #ifdef TIME_WITH_SYS_TIME
52     # include <sys/time.h>
53     # include <time.h>
54     #else
55     # ifdef HAVE_SYS_TIME_H
56     # include <sys/time.h>
57     # else
58     # include <time.h>
59     # endif
60     #endif
61    
62 gbeauche 1.5 // Define for external components
63     #define SHEEPSHAVER 1
64    
65 gbeauche 1.4 // Mac and host address space are the same
66     #define REAL_ADDRESSING 1
67    
68 gbeauche 1.5 #define POWERPC_ROM 1
69    
70     #if EMULATED_PPC
71 gbeauche 1.7 // Handle interrupts asynchronously?
72     #define ASYNC_IRQ 0
73 gbeauche 1.5 // Mac ROM is write protected when banked memory is used
74     #if REAL_ADDRESSING || DIRECT_ADDRESSING
75     # define ROM_IS_WRITE_PROTECTED 0
76     # define USE_SCRATCHMEM_SUBTERFUGE 1
77 cebix 1.1 #else
78 gbeauche 1.5 # define ROM_IS_WRITE_PROTECTED 1
79     #endif
80 gbeauche 1.9 // Configure PowerPC emulator
81 gbeauche 1.12 #define PPC_CHECK_INTERRUPTS 1
82 gbeauche 1.9 #define PPC_NO_LAZY_PC_UPDATE 1
83 gbeauche 1.12 //#define PPC_NO_DECODE_CACHE 1
84 gbeauche 1.10 #define PPC_FLIGHT_RECORDER 1
85 gbeauche 1.5 #else
86     // Mac ROM is write protected
87     #define ROM_IS_WRITE_PROTECTED 1
88     #define USE_SCRATCHMEM_SUBTERFUGE 0
89 cebix 1.1 #endif
90    
91     // Data types
92     typedef unsigned char uint8;
93     typedef signed char int8;
94     #if SIZEOF_SHORT == 2
95     typedef unsigned short uint16;
96     typedef short int16;
97     #elif SIZEOF_INT == 2
98     typedef unsigned int uint16;
99     typedef int int16;
100     #else
101     #error "No 2 byte type, you lose."
102     #endif
103     #if SIZEOF_INT == 4
104     typedef unsigned int uint32;
105     typedef int int32;
106     #elif SIZEOF_LONG == 4
107     typedef unsigned long uint32;
108     typedef long int32;
109     #else
110     #error "No 4 byte type, you lose."
111     #endif
112     #if SIZEOF_LONG == 8
113     typedef unsigned long uint64;
114     typedef long int64;
115 gbeauche 1.3 #define VAL64(a) (a ## l)
116     #define UVAL64(a) (a ## ul)
117 cebix 1.1 #elif SIZEOF_LONG_LONG == 8
118     typedef unsigned long long uint64;
119     typedef long long int64;
120 gbeauche 1.3 #define VAL64(a) (a ## LL)
121     #define UVAL64(a) (a ## uLL)
122 cebix 1.1 #else
123     #error "No 8 byte type, you lose."
124     #endif
125 gbeauche 1.3 #if SIZEOF_VOID_P == 4
126     typedef uint32 uintptr;
127     typedef int32 intptr;
128     #elif SIZEOF_VOID_P == 8
129     typedef uint64 uintptr;
130     typedef int64 intptr;
131     #else
132     #error "Unsupported size of pointer"
133 gbeauche 1.5 #endif
134    
135     // Helper functions to byteswap data
136     #ifdef HAVE_BYTESWAP_H
137     #include <byteswap.h>
138     #endif
139    
140     #ifndef bswap_16
141     #define bswap_16 generic_bswap_16
142     #endif
143    
144     static inline uint16 generic_bswap_16(uint16 x)
145     {
146     return ((x & 0xff) << 8) | ((x >> 8) & 0xff);
147     }
148    
149     #ifndef bswap_32
150     #define bswap_32 generic_bswap_32
151     #endif
152    
153     static inline uint32 generic_bswap_32(uint32 x)
154     {
155     return (((x & 0xff000000) >> 24) |
156     ((x & 0x00ff0000) >> 8) |
157     ((x & 0x0000ff00) << 8) |
158     ((x & 0x000000ff) << 24) );
159     }
160    
161     #ifndef bswap_64
162     #define bswap_64 generic_bswap_64
163     #endif
164    
165     static inline uint64 generic_bswap_64(uint64 x)
166     {
167     return (((x & UVAL64(0xff00000000000000)) >> 56) |
168     ((x & UVAL64(0x00ff000000000000)) >> 40) |
169     ((x & UVAL64(0x0000ff0000000000)) >> 24) |
170     ((x & UVAL64(0x000000ff00000000)) >> 8) |
171     ((x & UVAL64(0x00000000ff000000)) << 8) |
172     ((x & UVAL64(0x0000000000ff0000)) << 24) |
173     ((x & UVAL64(0x000000000000ff00)) << 40) |
174     ((x & UVAL64(0x00000000000000ff)) << 56) );
175     }
176    
177     #ifdef WORDS_BIGENDIAN
178     static inline uint16 tswap16(uint16 x) { return x; }
179     static inline uint32 tswap32(uint32 x) { return x; }
180     static inline uint64 tswap64(uint64 x) { return x; }
181     #else
182     static inline uint16 tswap16(uint16 x) { return bswap_16(x); }
183     static inline uint32 tswap32(uint32 x) { return bswap_32(x); }
184     static inline uint64 tswap64(uint64 x) { return bswap_64(x); }
185 gbeauche 1.3 #endif
186 cebix 1.1
187 gbeauche 1.6 // spin locks
188     #ifdef __GNUC__
189    
190     #ifdef __powerpc__
191     #define HAVE_TEST_AND_SET 1
192     static inline int testandset(int *p)
193     {
194     int ret;
195     __asm__ __volatile__("0: lwarx %0,0,%1 ;"
196     " xor. %0,%3,%0;"
197     " bne 1f;"
198     " stwcx. %2,0,%1;"
199     " bne- 0b;"
200     "1: "
201     : "=&r" (ret)
202     : "r" (p), "r" (1), "r" (0)
203     : "cr0", "memory");
204     return ret;
205     }
206     #endif
207    
208     #ifdef __i386__
209     #define HAVE_TEST_AND_SET 1
210     static inline int testandset(int *p)
211     {
212     char ret;
213     long int readval;
214    
215     __asm__ __volatile__("lock; cmpxchgl %3, %1; sete %0"
216     : "=q" (ret), "=m" (*p), "=a" (readval)
217     : "r" (1), "m" (*p), "a" (0)
218     : "memory");
219     return ret;
220     }
221     #endif
222    
223     #ifdef __s390__
224     #define HAVE_TEST_AND_SET 1
225     static inline int testandset(int *p)
226     {
227     int ret;
228    
229     __asm__ __volatile__("0: cs %0,%1,0(%2)\n"
230     " jl 0b"
231     : "=&d" (ret)
232     : "r" (1), "a" (p), "0" (*p)
233     : "cc", "memory" );
234     return ret;
235     }
236     #endif
237    
238     #ifdef __alpha__
239     #define HAVE_TEST_AND_SET 1
240     static inline int testandset(int *p)
241     {
242     int ret;
243     unsigned long one;
244    
245     __asm__ __volatile__("0: mov 1,%2\n"
246     " ldl_l %0,%1\n"
247     " stl_c %2,%1\n"
248     " beq %2,1f\n"
249     ".subsection 2\n"
250     "1: br 0b\n"
251     ".previous"
252     : "=r" (ret), "=m" (*p), "=r" (one)
253     : "m" (*p));
254     return ret;
255     }
256     #endif
257    
258     #ifdef __sparc__
259     #define HAVE_TEST_AND_SET 1
260     static inline int testandset(int *p)
261     {
262     int ret;
263    
264     __asm__ __volatile__("ldstub [%1], %0"
265     : "=r" (ret)
266     : "r" (p)
267     : "memory");
268    
269     return (ret ? 1 : 0);
270     }
271     #endif
272    
273     #ifdef __arm__
274     #define HAVE_TEST_AND_SET 1
275     static inline int testandset(int *p)
276     {
277     register unsigned int ret;
278     __asm__ __volatile__("swp %0, %1, [%2]"
279     : "=r"(ret)
280     : "0"(1), "r"(p));
281    
282     return ret;
283     }
284     #endif
285    
286     #endif /* __GNUC__ */
287    
288     #if HAVE_TEST_AND_SET
289     #define HAVE_SPINLOCKS 1
290     typedef int spinlock_t;
291    
292 gbeauche 1.8 static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
293 gbeauche 1.6
294     static inline void spin_lock(spinlock_t *lock)
295     {
296     while (testandset(lock));
297     }
298    
299     static inline void spin_unlock(spinlock_t *lock)
300     {
301     *lock = 0;
302     }
303    
304     static inline int spin_trylock(spinlock_t *lock)
305     {
306     return !testandset(lock);
307     }
308     #endif
309    
310 cebix 1.1 // Time data type for Time Manager emulation
311     #ifdef HAVE_CLOCK_GETTIME
312     typedef struct timespec tm_time_t;
313     #else
314     typedef struct timeval tm_time_t;
315     #endif
316    
317 cebix 1.2 // Setup pthread attributes
318     extern void Set_pthread_attr(pthread_attr_t *attr, int priority);
319    
320 cebix 1.1 // Various definitions
321     typedef struct rgb_color {
322     uint8 red;
323     uint8 green;
324     uint8 blue;
325     uint8 alpha;
326     } rgb_color;
327    
328     // Macro for calling MacOS routines
329     #define CallMacOS(type, tvect) call_macos((uint32)tvect)
330     #define CallMacOS1(type, tvect, arg1) call_macos1((uint32)tvect, (uint32)arg1)
331     #define CallMacOS2(type, tvect, arg1, arg2) call_macos2((uint32)tvect, (uint32)arg1, (uint32)arg2)
332     #define CallMacOS3(type, tvect, arg1, arg2, arg3) call_macos3((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3)
333     #define CallMacOS4(type, tvect, arg1, arg2, arg3, arg4) call_macos4((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4)
334     #define CallMacOS5(type, tvect, arg1, arg2, arg3, arg4, arg5) call_macos5((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4, (uint32)arg5)
335     #define CallMacOS6(type, tvect, arg1, arg2, arg3, arg4, arg5, arg6) call_macos6((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4, (uint32)arg5, (uint32)arg6)
336     #define CallMacOS7(type, tvect, arg1, arg2, arg3, arg4, arg5, arg6, arg7) call_macos7((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4, (uint32)arg5, (uint32)arg6, (uint32)arg7)
337    
338 gbeauche 1.3 #ifdef __cplusplus
339     extern "C" {
340     #endif
341     extern uint32 call_macos(uint32 tvect);
342     extern uint32 call_macos1(uint32 tvect, uint32 arg1);
343     extern uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2);
344     extern uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3);
345     extern uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4);
346     extern uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5);
347     extern uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6);
348     extern uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7);
349     #ifdef __cplusplus
350     }
351     #endif
352 cebix 1.1
353     #endif