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root/cebix/SheepShaver/src/Unix/sysdeps.h
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Comparing SheepShaver/src/Unix/sysdeps.h (file contents):
Revision 1.2 by cebix, 2002-02-21T15:12:12Z vs.
Revision 1.12 by gbeauche, 2003-10-26T13:59:02Z

# 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_CHECK_INTERRUPTS 1
82 + #define PPC_NO_LAZY_PC_UPDATE 1
83 + //#define PPC_NO_DECODE_CACHE 1
84 + #define PPC_FLIGHT_RECORDER 1
85 + #else
86 + // Mac ROM is write protected
87 + #define ROM_IS_WRITE_PROTECTED 1
88 + #define USE_SCRATCHMEM_SUBTERFUGE 0
89 + #endif
90 +
91   // Data types
92   typedef unsigned char uint8;
93   typedef signed char int8;
# Line 92 | Line 112 | typedef long int32;
112   #if SIZEOF_LONG == 8
113   typedef unsigned long uint64;
114   typedef long int64;
115 + #define VAL64(a) (a ## l)
116 + #define UVAL64(a) (a ## ul)
117   #elif SIZEOF_LONG_LONG == 8
118   typedef unsigned long long uint64;
119   typedef long long int64;
120 + #define VAL64(a) (a ## LL)
121 + #define UVAL64(a) (a ## uLL)
122   #else
123   #error "No 8 byte type, you lose."
124   #endif
125 + #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 + #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 + #endif
186 +
187 + // 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 + static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
293 +
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   // Time data type for Time Manager emulation
311   #ifdef HAVE_CLOCK_GETTIME
# Line 127 | Line 335 | typedef struct rgb_color {
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 < extern "C" uint32 call_macos(uint32 tvect);
339 < extern "C" uint32 call_macos1(uint32 tvect, uint32 arg1);
340 < extern "C" uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2);
341 < extern "C" uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3);
342 < extern "C" uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4);
343 < extern "C" uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5);
344 < extern "C" uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6);
345 < extern "C" uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7);
338 > #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  
353   #endif

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