1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2005 Marc Alexander Lehmann <schmorp@schmorp.de> |
2 | * Copyright (c) 2001-2006 Marc Alexander Lehmann <schmorp@schmorp.de> |
3 | * |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without modifica- |
4 | * Redistribution and use in source and binary forms, with or without modifica- |
5 | * tion, are permitted provided that the following conditions are met: |
5 | * tion, are permitted provided that the following conditions are met: |
6 | * |
6 | * |
7 | * 1. Redistributions of source code must retain the above copyright notice, |
7 | * 1. Redistributions of source code must retain the above copyright notice, |
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38 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
38 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
39 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
39 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
40 | # elif __i386__ && CORO_LINUX |
40 | # elif __i386__ && CORO_LINUX |
41 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
41 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
42 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
42 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
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43 | # elif __amd64__ && CORO_LINUX |
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44 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
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45 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
43 | # else |
46 | # else |
44 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
47 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
45 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
48 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
46 | # endif |
49 | # endif |
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50 | #endif |
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51 | |
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52 | #if CORO_UCONTEXT |
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53 | # include <stddef.h> |
47 | #endif |
54 | #endif |
48 | |
55 | |
49 | #if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
56 | #if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
50 | |
57 | |
51 | #include <stdlib.h> |
58 | #include <stdlib.h> |
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91 | # endif |
98 | # endif |
92 | |
99 | |
93 | #endif |
100 | #endif |
94 | |
101 | |
95 | /* initialize a machine state */ |
102 | /* initialize a machine state */ |
96 | void coro_create(coro_context *ctx, |
103 | void coro_create (coro_context *ctx, |
97 | coro_func coro, void *arg, |
104 | coro_func coro, void *arg, |
98 | void *sptr, long ssize) |
105 | void *sptr, long ssize) |
99 | { |
106 | { |
100 | #if CORO_UCONTEXT |
107 | #if CORO_UCONTEXT |
101 | |
108 | |
102 | getcontext (&(ctx->uc)); |
109 | getcontext (&(ctx->uc)); |
103 | |
110 | |
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133 | nsa.sa_handler = trampoline; |
140 | nsa.sa_handler = trampoline; |
134 | sigemptyset (&nsa.sa_mask); |
141 | sigemptyset (&nsa.sa_mask); |
135 | nsa.sa_flags = SA_ONSTACK; |
142 | nsa.sa_flags = SA_ONSTACK; |
136 | |
143 | |
137 | if (sigaction (SIGUSR2, &nsa, &osa)) |
144 | if (sigaction (SIGUSR2, &nsa, &osa)) |
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145 | { |
138 | perror ("sigaction"); |
146 | perror ("sigaction"); |
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147 | abort (); |
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148 | } |
139 | |
149 | |
140 | /* set the new stack */ |
150 | /* set the new stack */ |
141 | nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
151 | nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
142 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
152 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
143 | nstk.ss_flags = 0; |
153 | nstk.ss_flags = 0; |
144 | |
154 | |
145 | if (sigaltstack (&nstk, &ostk) < 0) |
155 | if (sigaltstack (&nstk, &ostk) < 0) |
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156 | { |
146 | perror ("sigaltstack"); |
157 | perror ("sigaltstack"); |
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158 | abort (); |
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159 | } |
147 | |
160 | |
148 | trampoline_count = 0; |
161 | trampoline_count = 0; |
149 | kill (getpid (), SIGUSR2); |
162 | kill (getpid (), SIGUSR2); |
150 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
163 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
151 | |
164 | |
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162 | abort (); |
175 | abort (); |
163 | |
176 | |
164 | if (~ostk.ss_flags & SS_DISABLE) |
177 | if (~ostk.ss_flags & SS_DISABLE) |
165 | sigaltstack (&ostk, 0); |
178 | sigaltstack (&ostk, 0); |
166 | |
179 | |
167 | sigaction (SIGUSR1, &osa, 0); |
180 | sigaction (SIGUSR2, &osa, 0); |
168 | |
181 | |
169 | sigprocmask (SIG_SETMASK, &osig, 0); |
182 | sigprocmask (SIG_SETMASK, &osig, 0); |
170 | |
183 | |
171 | # elif CORO_LOSER |
184 | # elif CORO_LOSER |
172 | |
185 | |
173 | setjmp (ctx->env); |
186 | setjmp (ctx->env); |
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187 | #if __CYGWIN__ |
174 | ctx->env[7] = (long)((char *)sptr + ssize); |
188 | ctx->env[7] = (long)((char *)sptr + ssize); |
175 | ctx->env[8] = (long)coro_init; |
189 | ctx->env[8] = (long)coro_init; |
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190 | #elif defined(_M_IX86) |
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191 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; |
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192 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize); |
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193 | #elif defined(_M_AMD64) |
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194 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; |
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195 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize); |
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196 | #elif defined(_M_IA64) |
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197 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; |
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198 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize); |
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199 | #else |
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200 | #error "microsoft libc or architecture not supported" |
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201 | #endif |
176 | |
202 | |
177 | # elif CORO_LINUX |
203 | # elif CORO_LINUX |
178 | |
204 | |
179 | setjmp (ctx->env); |
205 | _setjmp (ctx->env); |
180 | #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
206 | #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
181 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) |
207 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) |
182 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
208 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
183 | ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize); |
209 | ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize); |
184 | #elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
210 | #elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
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188 | #elif defined(__GNU_LIBRARY__) && defined(__i386__) |
214 | #elif defined(__GNU_LIBRARY__) && defined(__i386__) |
189 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
215 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
190 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); |
216 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); |
191 | #elif defined(__GNU_LIBRARY__) && defined(__amd64__) |
217 | #elif defined(__GNU_LIBRARY__) && defined(__amd64__) |
192 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
218 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
193 | ctx->env[0].__jmpbuf[JB_RSP] = (long)((char *)sptr + ssize); |
219 | ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize); |
194 | #else |
220 | #else |
195 | #error "linux libc or architecture not supported" |
221 | #error "linux libc or architecture not supported" |
196 | #endif |
222 | #endif |
197 | |
223 | |
198 | # elif CORO_IRIX |
224 | # elif CORO_IRIX |