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/cvs/libcoro/coro.c
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Comparing libcoro/coro.c (file contents):
Revision 1.20 by root, Thu Oct 26 05:20:47 2006 UTC vs.
Revision 1.25 by root, Fri Apr 27 19:26:18 2007 UTC

… …
65 65
66static volatile coro_func coro_init_func; 66static volatile coro_func coro_init_func;
67static volatile void *coro_init_arg; 67static volatile void *coro_init_arg;
68static volatile coro_context *new_coro, *create_coro; 68static volatile coro_context *new_coro, *create_coro;
69 69
70/* what we really want to detect here is wether we use a new-enough version of GAS */
71/* instead, check for gcc 3 and ELF and hope for the best */
72#if __GNUC__ >= 3 && __ELF__
73# define HAVE_CFI 1
74#endif
75
70static void 76static void
71coro_init (void) 77coro_init (void)
72{ 78{
73 volatile coro_func func = coro_init_func; 79 volatile coro_func func = coro_init_func;
74 volatile void *arg = coro_init_arg; 80 volatile void *arg = coro_init_arg;
75 81
76 coro_transfer ((coro_context *)new_coro, (coro_context *)create_coro); 82 coro_transfer ((coro_context *)new_coro, (coro_context *)create_coro);
77 83
84#if HAVE_CFI
85 asm (".cfi_startproc");
86#endif
78 func ((void *)arg); 87 func ((void *)arg);
88#if HAVE_CFI
89 asm (".cfi_endproc");
90#endif
79 91
80 /* the new coro returned. bad. just abort() for now */ 92 /* the new coro returned. bad. just abort() for now */
81 abort (); 93 abort ();
82} 94}
83 95
… …
98# endif 110# endif
99 111
100#endif 112#endif
101 113
102/* initialize a machine state */ 114/* initialize a machine state */
103void coro_create(coro_context *ctx, 115void coro_create (coro_context *ctx,
104 coro_func coro, void *arg, 116 coro_func coro, void *arg,
105 void *sptr, long ssize) 117 void *sptr, long ssize)
106{ 118{
107#if CORO_UCONTEXT 119#if CORO_UCONTEXT
108 120
109 getcontext (&(ctx->uc)); 121 getcontext (&(ctx->uc));
110 122
… …
140 nsa.sa_handler = trampoline; 152 nsa.sa_handler = trampoline;
141 sigemptyset (&nsa.sa_mask); 153 sigemptyset (&nsa.sa_mask);
142 nsa.sa_flags = SA_ONSTACK; 154 nsa.sa_flags = SA_ONSTACK;
143 155
144 if (sigaction (SIGUSR2, &nsa, &osa)) 156 if (sigaction (SIGUSR2, &nsa, &osa))
157 {
145 perror ("sigaction"); 158 perror ("sigaction");
159 abort ();
160 }
146 161
147 /* set the new stack */ 162 /* set the new stack */
148 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 163 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
149 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); 164 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
150 nstk.ss_flags = 0; 165 nstk.ss_flags = 0;
151 166
152 if (sigaltstack (&nstk, &ostk) < 0) 167 if (sigaltstack (&nstk, &ostk) < 0)
168 {
153 perror ("sigaltstack"); 169 perror ("sigaltstack");
170 abort ();
171 }
154 172
155 trampoline_count = 0; 173 trampoline_count = 0;
156 kill (getpid (), SIGUSR2); 174 kill (getpid (), SIGUSR2);
157 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); 175 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
158 176
… …
176 sigprocmask (SIG_SETMASK, &osig, 0); 194 sigprocmask (SIG_SETMASK, &osig, 0);
177 195
178# elif CORO_LOSER 196# elif CORO_LOSER
179 197
180 setjmp (ctx->env); 198 setjmp (ctx->env);
199#if __CYGWIN__
181 ctx->env[7] = (long)((char *)sptr + ssize); 200 ctx->env[7] = (long)((char *)sptr + ssize);
182 ctx->env[8] = (long)coro_init; 201 ctx->env[8] = (long)coro_init;
202#elif defined(_M_IX86)
203 ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
204 ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize);
205#elif defined(_M_AMD64)
206 ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
207 ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize);
208#elif defined(_M_IA64)
209 ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
210 ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize);
211#else
212#error "microsoft libc or architecture not supported"
213#endif
183 214
184# elif CORO_LINUX 215# elif CORO_LINUX
185 216
186 setjmp (ctx->env); 217 _setjmp (ctx->env);
187#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
188 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) 218#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
189 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; 219 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
190 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize); 220 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize);
191#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
192 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) 221#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
193 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; 222 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
194 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); 223 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
195#elif defined(__GNU_LIBRARY__) && defined(__i386__) 224#elif defined (__GNU_LIBRARY__) && defined (__i386__)
196 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 225 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
197 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); 226 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
198#elif defined(__GNU_LIBRARY__) && defined(__amd64__) 227#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
199 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; 228 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
200 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize); 229 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize);
201#else 230#else
202#error "linux libc or architecture not supported" 231#error "linux libc or architecture not supported"
203#endif 232#endif
204 233
205# elif CORO_IRIX 234# elif CORO_IRIX
206 235
207 setjmp (ctx->env); 236 setjmp (ctx->env);
208 ctx->env[JB_PC] = (__uint64_t)coro_init; 237 ctx->env[JB_PC] = (__uint64_t)coro_init;
209 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr,ssize); 238 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
210 239
211# endif 240# endif
212 241
213 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 242 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
214 243

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