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30 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
30 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
31 | */ |
31 | */ |
32 | |
32 | |
33 | #include "coro.h" |
33 | #include "coro.h" |
34 | |
34 | |
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35 | #if !defined(STACK_ADJUST_PTR) |
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36 | /* IRIX is decidedly NON-unix */ |
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37 | # if __sgi |
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38 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
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39 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
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40 | # elif __i386__ && CORO_LINUX |
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41 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
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42 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
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43 | # else |
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44 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
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45 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
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46 | # endif |
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47 | #endif |
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48 | |
35 | #if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX |
49 | #if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX |
36 | |
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37 | /* IRIX is decidedly NON-unix */ |
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38 | #if __sgi |
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39 | # define STACK_ADJUST(sp,ss) ((ss) - sizeof (long) + (char *)(sp)) |
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40 | #else |
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41 | # define STACK_ADJUST(sp,ss) (ss) |
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42 | #endif |
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43 | |
50 | |
44 | #include <signal.h> |
51 | #include <signal.h> |
45 | |
52 | |
46 | static volatile coro_func coro_init_func; |
53 | static volatile coro_func coro_init_func; |
47 | static volatile void *coro_init_arg; |
54 | static volatile void *coro_init_arg; |
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87 | #if CORO_UCONTEXT |
94 | #if CORO_UCONTEXT |
88 | |
95 | |
89 | getcontext (&(ctx->uc)); |
96 | getcontext (&(ctx->uc)); |
90 | |
97 | |
91 | ctx->uc.uc_link = 0; |
98 | ctx->uc.uc_link = 0; |
92 | ctx->uc.uc_stack.ss_sp = STACK_ADJUST(sptr,ssize); |
99 | ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR(sptr,ssize); |
93 | ctx->uc.uc_stack.ss_size = (size_t) ssize; |
100 | ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize); |
94 | ctx->uc.uc_stack.ss_flags = 0; |
101 | ctx->uc.uc_stack.ss_flags = 0; |
95 | |
102 | |
96 | makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); |
103 | makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); |
97 | |
104 | |
98 | #elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX |
105 | #elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX |
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124 | if (sigaction (SIGUSR2, &nsa, &osa)) |
131 | if (sigaction (SIGUSR2, &nsa, &osa)) |
125 | perror ("sigaction"); |
132 | perror ("sigaction"); |
126 | |
133 | |
127 | /* set the new stack */ |
134 | /* set the new stack */ |
128 | nstk.ss_sp = STACK_ADJUST(sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
135 | nstk.ss_sp = STACK_ADJUST(sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
129 | nstk.ss_size = ssize; |
136 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
130 | nstk.ss_flags = 0; |
137 | nstk.ss_flags = 0; |
131 | |
138 | |
132 | if (sigaltstack (&nstk, &ostk) < 0) |
139 | if (sigaltstack (&nstk, &ostk) < 0) |
133 | perror ("sigaltstack"); |
140 | perror ("sigaltstack"); |
134 | |
141 | |
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165 | |
172 | |
166 | setjmp (ctx->env); |
173 | setjmp (ctx->env); |
167 | #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
174 | #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
168 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) |
175 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) |
169 | ctx->env[0].__jmpbuf[JB_PC] = (int)coro_init; |
176 | ctx->env[0].__jmpbuf[JB_PC] = (int)coro_init; |
170 | ctx->env[0].__jmpbuf[JB_SP] = (int)((char *)sptr + ssize); |
177 | ctx->env[0].__jmpbuf[JB_SP] = (int)STACK_ADJUST_PTR(sptr,ssize); |
171 | #elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
178 | #elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
172 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) |
179 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) |
173 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
180 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
174 | ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); |
181 | ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); |
175 | #elif defined(__GNU_LIBRARY__) && defined(__i386__) |
182 | #elif defined(__GNU_LIBRARY__) && defined(__i386__) |
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180 | #endif |
187 | #endif |
181 | |
188 | |
182 | # elif CORO_IRIX |
189 | # elif CORO_IRIX |
183 | |
190 | |
184 | setjmp (ctx->env); |
191 | setjmp (ctx->env); |
185 | ctx->env[JB_PC] = (int)coro_init; |
192 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
186 | ctx->env[JB_SP] = (int)((char *)sptr + ssize); |
193 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR(sptr,ssize); |
187 | |
194 | |
188 | # endif |
195 | # endif |
189 | |
196 | |
190 | coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); |
197 | coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); |
191 | |
198 | |