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root/cebix/SheepShaver/src/Unix/sysdeps.h
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Comparing SheepShaver/src/Unix/sysdeps.h (file contents):
Revision 1.1 by cebix, 2002-02-04T16:58:13Z vs.
Revision 1.10 by gbeauche, 2003-10-11T09:57:49Z

# Line 59 | Line 59
59   # endif
60   #endif
61  
62 < // Are we using a PPC emulator or the real thing?
63 < #ifdef __powerpc__
64 < #define EMULATED_PPC 0
65 < #else
66 < #define EMULATED_PPC 1
67 < #endif
62 > // Define for external components
63 > #define SHEEPSHAVER 1
64 >
65 > // Mac and host address space are the same
66 > #define REAL_ADDRESSING 1
67  
68   #define POWERPC_ROM 1
69  
70 + #if EMULATED_PPC
71 + // Handle interrupts asynchronously?
72 + #define ASYNC_IRQ 0
73 + // 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 + #else
78 + # define ROM_IS_WRITE_PROTECTED 1
79 + #endif
80 + // Configure PowerPC emulator
81 + #define PPC_NO_LAZY_PC_UPDATE 1
82 + #define PPC_FLIGHT_RECORDER 1
83 + #else
84 + // Mac ROM is write protected
85 + #define ROM_IS_WRITE_PROTECTED 1
86 + #define USE_SCRATCHMEM_SUBTERFUGE 0
87 + #endif
88 +
89   // Data types
90   typedef unsigned char uint8;
91   typedef signed char int8;
# Line 92 | Line 110 | typedef long int32;
110   #if SIZEOF_LONG == 8
111   typedef unsigned long uint64;
112   typedef long int64;
113 + #define VAL64(a) (a ## l)
114 + #define UVAL64(a) (a ## ul)
115   #elif SIZEOF_LONG_LONG == 8
116   typedef unsigned long long uint64;
117   typedef long long int64;
118 + #define VAL64(a) (a ## LL)
119 + #define UVAL64(a) (a ## uLL)
120   #else
121   #error "No 8 byte type, you lose."
122   #endif
123 + #if SIZEOF_VOID_P == 4
124 + typedef uint32 uintptr;
125 + typedef int32 intptr;
126 + #elif SIZEOF_VOID_P == 8
127 + typedef uint64 uintptr;
128 + typedef int64 intptr;
129 + #else
130 + #error "Unsupported size of pointer"
131 + #endif
132 +
133 + // Helper functions to byteswap data
134 + #ifdef HAVE_BYTESWAP_H
135 + #include <byteswap.h>
136 + #endif
137 +
138 + #ifndef bswap_16
139 + #define bswap_16 generic_bswap_16
140 + #endif
141 +
142 + static inline uint16 generic_bswap_16(uint16 x)
143 + {
144 +  return ((x & 0xff) << 8) | ((x >> 8) & 0xff);
145 + }
146 +
147 + #ifndef bswap_32
148 + #define bswap_32 generic_bswap_32
149 + #endif
150 +
151 + static inline uint32 generic_bswap_32(uint32 x)
152 + {
153 +  return (((x & 0xff000000) >> 24) |
154 +                  ((x & 0x00ff0000) >>  8) |
155 +                  ((x & 0x0000ff00) <<  8) |
156 +                  ((x & 0x000000ff) << 24) );
157 + }
158 +
159 + #ifndef bswap_64
160 + #define bswap_64 generic_bswap_64
161 + #endif
162 +
163 + static inline uint64 generic_bswap_64(uint64 x)
164 + {
165 +  return (((x & UVAL64(0xff00000000000000)) >> 56) |
166 +                  ((x & UVAL64(0x00ff000000000000)) >> 40) |
167 +                  ((x & UVAL64(0x0000ff0000000000)) >> 24) |
168 +                  ((x & UVAL64(0x000000ff00000000)) >>  8) |
169 +                  ((x & UVAL64(0x00000000ff000000)) <<  8) |
170 +                  ((x & UVAL64(0x0000000000ff0000)) << 24) |
171 +                  ((x & UVAL64(0x000000000000ff00)) << 40) |
172 +                  ((x & UVAL64(0x00000000000000ff)) << 56) );
173 + }
174 +
175 + #ifdef WORDS_BIGENDIAN
176 + static inline uint16 tswap16(uint16 x) { return x; }
177 + static inline uint32 tswap32(uint32 x) { return x; }
178 + static inline uint64 tswap64(uint64 x) { return x; }
179 + #else
180 + static inline uint16 tswap16(uint16 x) { return bswap_16(x); }
181 + static inline uint32 tswap32(uint32 x) { return bswap_32(x); }
182 + static inline uint64 tswap64(uint64 x) { return bswap_64(x); }
183 + #endif
184 +
185 + // spin locks
186 + #ifdef __GNUC__
187 +
188 + #ifdef __powerpc__
189 + #define HAVE_TEST_AND_SET 1
190 + static inline int testandset(int *p)
191 + {
192 +        int ret;
193 +        __asm__ __volatile__("0:    lwarx %0,0,%1 ;"
194 +                                                 "      xor. %0,%3,%0;"
195 +                                                 "      bne 1f;"
196 +                                                 "      stwcx. %2,0,%1;"
197 +                                                 "      bne- 0b;"
198 +                                                 "1:    "
199 +                                                 : "=&r" (ret)
200 +                                                 : "r" (p), "r" (1), "r" (0)
201 +                                                 : "cr0", "memory");
202 +        return ret;
203 + }
204 + #endif
205 +
206 + #ifdef __i386__
207 + #define HAVE_TEST_AND_SET 1
208 + static inline int testandset(int *p)
209 + {
210 +        char ret;
211 +        long int readval;
212 +        
213 +        __asm__ __volatile__("lock; cmpxchgl %3, %1; sete %0"
214 +                                                 : "=q" (ret), "=m" (*p), "=a" (readval)
215 +                                                 : "r" (1), "m" (*p), "a" (0)
216 +                                                 : "memory");
217 +        return ret;
218 + }
219 + #endif
220 +
221 + #ifdef __s390__
222 + #define HAVE_TEST_AND_SET 1
223 + static inline int testandset(int *p)
224 + {
225 +        int ret;
226 +
227 +        __asm__ __volatile__("0: cs    %0,%1,0(%2)\n"
228 +                                                 "   jl    0b"
229 +                                                 : "=&d" (ret)
230 +                                                 : "r" (1), "a" (p), "0" (*p)
231 +                                                 : "cc", "memory" );
232 +        return ret;
233 + }
234 + #endif
235 +
236 + #ifdef __alpha__
237 + #define HAVE_TEST_AND_SET 1
238 + static inline int testandset(int *p)
239 + {
240 +        int ret;
241 +        unsigned long one;
242 +
243 +        __asm__ __volatile__("0:        mov 1,%2\n"
244 +                                                 "      ldl_l %0,%1\n"
245 +                                                 "      stl_c %2,%1\n"
246 +                                                 "      beq %2,1f\n"
247 +                                                 ".subsection 2\n"
248 +                                                 "1:    br 0b\n"
249 +                                                 ".previous"
250 +                                                 : "=r" (ret), "=m" (*p), "=r" (one)
251 +                                                 : "m" (*p));
252 +        return ret;
253 + }
254 + #endif
255 +
256 + #ifdef __sparc__
257 + #define HAVE_TEST_AND_SET 1
258 + static inline int testandset(int *p)
259 + {
260 +        int ret;
261 +
262 +        __asm__ __volatile__("ldstub    [%1], %0"
263 +                                                 : "=r" (ret)
264 +                                                 : "r" (p)
265 +                                                 : "memory");
266 +
267 +        return (ret ? 1 : 0);
268 + }
269 + #endif
270 +
271 + #ifdef __arm__
272 + #define HAVE_TEST_AND_SET 1
273 + static inline int testandset(int *p)
274 + {
275 +        register unsigned int ret;
276 +        __asm__ __volatile__("swp %0, %1, [%2]"
277 +                                                 : "=r"(ret)
278 +                                                 : "0"(1), "r"(p));
279 +        
280 +        return ret;
281 + }
282 + #endif
283 +
284 + #endif /* __GNUC__ */
285 +
286 + #if HAVE_TEST_AND_SET
287 + #define HAVE_SPINLOCKS 1
288 + typedef int spinlock_t;
289 +
290 + static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
291 +
292 + static inline void spin_lock(spinlock_t *lock)
293 + {
294 +        while (testandset(lock));
295 + }
296 +
297 + static inline void spin_unlock(spinlock_t *lock)
298 + {
299 +        *lock = 0;
300 + }
301 +
302 + static inline int spin_trylock(spinlock_t *lock)
303 + {
304 +        return !testandset(lock);
305 + }
306 + #endif
307  
308   // Time data type for Time Manager emulation
309   #ifdef HAVE_CLOCK_GETTIME
# Line 106 | Line 312 | typedef struct timespec tm_time_t;
312   typedef struct timeval tm_time_t;
313   #endif
314  
315 + // Setup pthread attributes
316 + extern void Set_pthread_attr(pthread_attr_t *attr, int priority);
317 +
318   // Various definitions
319   typedef struct rgb_color {
320          uint8           red;
# Line 124 | Line 333 | typedef struct rgb_color {
333   #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)
334   #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)
335  
336 < extern "C" uint32 call_macos(uint32 tvect);
337 < extern "C" uint32 call_macos1(uint32 tvect, uint32 arg1);
338 < extern "C" uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2);
339 < extern "C" uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3);
340 < extern "C" uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4);
341 < extern "C" uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5);
342 < extern "C" uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6);
343 < extern "C" uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7);
336 > #ifdef __cplusplus
337 > extern "C" {
338 > #endif
339 > extern uint32 call_macos(uint32 tvect);
340 > extern uint32 call_macos1(uint32 tvect, uint32 arg1);
341 > extern uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2);
342 > extern uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3);
343 > extern uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4);
344 > extern uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5);
345 > extern uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6);
346 > extern uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7);
347 > #ifdef __cplusplus
348 > }
349 > #endif
350  
351   #endif

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