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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47 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
47 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
48 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
48 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
49 | # endif |
49 | # endif |
50 | #endif |
50 | #endif |
51 | |
51 | |
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52 | #if CORO_UCONTEXT |
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53 | # include <stddef.h> |
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54 | #endif |
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55 | |
52 | #if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
56 | #if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
53 | |
57 | |
54 | #include <stdlib.h> |
58 | #include <stdlib.h> |
55 | |
59 | |
56 | #if CORO_SJLJ |
60 | #if CORO_SJLJ |
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94 | # endif |
98 | # endif |
95 | |
99 | |
96 | #endif |
100 | #endif |
97 | |
101 | |
98 | /* initialize a machine state */ |
102 | /* initialize a machine state */ |
99 | void coro_create(coro_context *ctx, |
103 | void coro_create (coro_context *ctx, |
100 | coro_func coro, void *arg, |
104 | coro_func coro, void *arg, |
101 | void *sptr, long ssize) |
105 | void *sptr, long ssize) |
102 | { |
106 | { |
103 | #if CORO_UCONTEXT |
107 | #if CORO_UCONTEXT |
104 | |
108 | |
105 | getcontext (&(ctx->uc)); |
109 | getcontext (&(ctx->uc)); |
106 | |
110 | |
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136 | nsa.sa_handler = trampoline; |
140 | nsa.sa_handler = trampoline; |
137 | sigemptyset (&nsa.sa_mask); |
141 | sigemptyset (&nsa.sa_mask); |
138 | nsa.sa_flags = SA_ONSTACK; |
142 | nsa.sa_flags = SA_ONSTACK; |
139 | |
143 | |
140 | if (sigaction (SIGUSR2, &nsa, &osa)) |
144 | if (sigaction (SIGUSR2, &nsa, &osa)) |
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145 | { |
141 | perror ("sigaction"); |
146 | perror ("sigaction"); |
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147 | abort (); |
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148 | } |
142 | |
149 | |
143 | /* set the new stack */ |
150 | /* set the new stack */ |
144 | 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. */ |
145 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
152 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
146 | nstk.ss_flags = 0; |
153 | nstk.ss_flags = 0; |
147 | |
154 | |
148 | if (sigaltstack (&nstk, &ostk) < 0) |
155 | if (sigaltstack (&nstk, &ostk) < 0) |
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156 | { |
149 | perror ("sigaltstack"); |
157 | perror ("sigaltstack"); |
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158 | abort (); |
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159 | } |
150 | |
160 | |
151 | trampoline_count = 0; |
161 | trampoline_count = 0; |
152 | kill (getpid (), SIGUSR2); |
162 | kill (getpid (), SIGUSR2); |
153 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
163 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
154 | |
164 | |
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165 | abort (); |
175 | abort (); |
166 | |
176 | |
167 | if (~ostk.ss_flags & SS_DISABLE) |
177 | if (~ostk.ss_flags & SS_DISABLE) |
168 | sigaltstack (&ostk, 0); |
178 | sigaltstack (&ostk, 0); |
169 | |
179 | |
170 | sigaction (SIGUSR1, &osa, 0); |
180 | sigaction (SIGUSR2, &osa, 0); |
171 | |
181 | |
172 | sigprocmask (SIG_SETMASK, &osig, 0); |
182 | sigprocmask (SIG_SETMASK, &osig, 0); |
173 | |
183 | |
174 | # elif CORO_LOSER |
184 | # elif CORO_LOSER |
175 | |
185 | |
176 | setjmp (ctx->env); |
186 | setjmp (ctx->env); |
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187 | #if __CYGWIN__ |
177 | ctx->env[7] = (long)((char *)sptr + ssize); |
188 | ctx->env[7] = (long)((char *)sptr + ssize); |
178 | 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 |
179 | |
202 | |
180 | # elif CORO_LINUX |
203 | # elif CORO_LINUX |
181 | |
204 | |
182 | setjmp (ctx->env); |
205 | _setjmp (ctx->env); |
183 | #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
206 | #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
184 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) |
207 | && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) |
185 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
208 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
186 | 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); |
187 | #elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |
210 | #elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ |