1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2008 Marc Alexander Lehmann <schmorp@schmorp.de> |
2 | * Copyright (c) 2001-2011 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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86 | volatile coro_func func = coro_init_func; |
86 | volatile coro_func func = coro_init_func; |
87 | volatile void *arg = coro_init_arg; |
87 | volatile void *arg = coro_init_arg; |
88 | |
88 | |
89 | coro_transfer (new_coro, create_coro); |
89 | coro_transfer (new_coro, create_coro); |
90 | |
90 | |
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91 | #if __GCC_HAVE_DWARF2_CFI_ASM && __amd64 |
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92 | asm (".cfi_undefined rip"); |
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93 | #endif |
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94 | |
91 | func ((void *)arg); |
95 | func ((void *)arg); |
92 | |
96 | |
93 | /* the new coro returned. bad. just abort() for now */ |
97 | /* the new coro returned. bad. just abort() for now */ |
94 | abort (); |
98 | abort (); |
95 | } |
99 | } |
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100 | |
104 | |
101 | /* trampoline signal handler */ |
105 | /* trampoline signal handler */ |
102 | static void |
106 | static void |
103 | trampoline (int sig) |
107 | trampoline (int sig) |
104 | { |
108 | { |
105 | if ( |
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106 | #if _XOPEN_UNIX > 0 |
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107 | _setjmp (new_coro->env) |
109 | if (coro_setjmp (new_coro->env)) |
108 | #else |
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109 | sigsetjmp (new_coro->env, 0) |
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110 | #endif |
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111 | ) { |
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112 | coro_init (); /* start it */ |
110 | coro_init (); /* start it */ |
113 | } |
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114 | else |
111 | else |
115 | trampoline_done = 1; |
112 | trampoline_done = 1; |
116 | } |
113 | } |
117 | |
114 | |
118 | # endif |
115 | # endif |
119 | |
116 | |
120 | # if CORO_ASM |
117 | # if CORO_ASM |
121 | |
118 | |
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119 | #if _WIN32 |
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120 | #define CORO_WIN_TIB 1 |
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121 | #endif |
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122 | |
122 | asm ( |
123 | asm ( |
123 | ".text\n" |
124 | "\t.text\n" |
124 | ".globl coro_transfer\n" |
125 | "\t.globl coro_transfer\n" |
125 | ".type coro_transfer, @function\n" |
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126 | "coro_transfer:\n" |
126 | "coro_transfer:\n" |
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127 | /* windows, of course, gives a shit on the amd64 ABI and uses different registers */ |
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128 | /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */ |
127 | #if __amd64 |
129 | #if __amd64 |
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130 | #ifdef WIN32 |
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131 | /* TODO: xmm6..15 also would need to be saved. sigh. */ |
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132 | #define NUM_SAVED 8 |
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133 | "\tpushq %rsi\n" |
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134 | "\tpushq %rdi\n" |
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135 | "\tpushq %rbp\n" |
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136 | "\tpushq %rbx\n" |
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137 | "\tpushq %r12\n" |
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138 | "\tpushq %r13\n" |
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139 | "\tpushq %r14\n" |
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140 | "\tpushq %r15\n" |
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141 | #if CORO_WIN_TIB |
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142 | "\tpushq %fs:0x0\n" |
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143 | "\tpushq %fs:0x8\n" |
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144 | "\tpushq %fs:0xc\n" |
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145 | #endif |
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146 | "\tmovq %rsp, (%rcx)\n" |
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147 | "\tmovq (%rdx), %rsp\n" |
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148 | #if CORO_WIN_TIB |
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149 | "\tpopq %fs:0xc\n" |
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150 | "\tpopq %fs:0x8\n" |
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151 | "\tpopq %fs:0x0\n" |
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152 | #endif |
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153 | "\tpopq %r15\n" |
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154 | "\tpopq %r14\n" |
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155 | "\tpopq %r13\n" |
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156 | "\tpopq %r12\n" |
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157 | "\tpopq %rbx\n" |
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158 | "\tpopq %rbp\n" |
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159 | "\tpopq %rdi\n" |
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160 | "\tpopq %rsi\n" |
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161 | #else |
128 | #define NUM_SAVED 6 |
162 | #define NUM_SAVED 6 |
129 | "\tpush %rbp\n" |
163 | "\tpushq %rbp\n" |
130 | "\tpush %rbx\n" |
164 | "\tpushq %rbx\n" |
131 | "\tpush %r12\n" |
165 | "\tpushq %r12\n" |
132 | "\tpush %r13\n" |
166 | "\tpushq %r13\n" |
133 | "\tpush %r14\n" |
167 | "\tpushq %r14\n" |
134 | "\tpush %r15\n" |
168 | "\tpushq %r15\n" |
135 | "\tmov %rsp, (%rdi)\n" |
169 | "\tmovq %rsp, (%rdi)\n" |
136 | "\tmov (%rsi), %rsp\n" |
170 | "\tmovq (%rsi), %rsp\n" |
137 | "\tpop %r15\n" |
171 | "\tpopq %r15\n" |
138 | "\tpop %r14\n" |
172 | "\tpopq %r14\n" |
139 | "\tpop %r13\n" |
173 | "\tpopq %r13\n" |
140 | "\tpop %r12\n" |
174 | "\tpopq %r12\n" |
141 | "\tpop %rbx\n" |
175 | "\tpopq %rbx\n" |
142 | "\tpop %rbp\n" |
176 | "\tpopq %rbp\n" |
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177 | #endif |
143 | #elif __i386 |
178 | #elif __i386 |
144 | #define NUM_SAVED 4 |
179 | #define NUM_SAVED 4 |
145 | "\tpush %ebp\n" |
180 | "\tpushl %ebp\n" |
146 | "\tpush %ebx\n" |
181 | "\tpushl %ebx\n" |
147 | "\tpush %esi\n" |
182 | "\tpushl %esi\n" |
148 | "\tpush %edi\n" |
183 | "\tpushl %edi\n" |
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184 | #if CORO_WIN_TIB |
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185 | "\tpushl %fs:0\n" |
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186 | "\tpushl %fs:4\n" |
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187 | "\tpushl %fs:8\n" |
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188 | #endif |
149 | "\tmov %esp, (%eax)\n" |
189 | "\tmovl %esp, (%eax)\n" |
150 | "\tmov (%edx), %esp\n" |
190 | "\tmovl (%edx), %esp\n" |
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191 | #if CORO_WIN_TIB |
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192 | "\tpopl %fs:8\n" |
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193 | "\tpopl %fs:4\n" |
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194 | "\tpopl %fs:0\n" |
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195 | #endif |
151 | "\tpop %edi\n" |
196 | "\tpopl %edi\n" |
152 | "\tpop %esi\n" |
197 | "\tpopl %esi\n" |
153 | "\tpop %ebx\n" |
198 | "\tpopl %ebx\n" |
154 | "\tpop %ebp\n" |
199 | "\tpopl %ebp\n" |
155 | #else |
200 | #else |
156 | #error unsupported architecture |
201 | #error unsupported architecture |
157 | #endif |
202 | #endif |
158 | "\tret\n" |
203 | "\tret\n" |
159 | ); |
204 | ); |
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195 | perror ("sigaction"); |
240 | perror ("sigaction"); |
196 | abort (); |
241 | abort (); |
197 | } |
242 | } |
198 | |
243 | |
199 | /* set the new stack */ |
244 | /* set the new stack */ |
200 | nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
245 | nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */ |
201 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
246 | nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize); |
202 | nstk.ss_flags = 0; |
247 | nstk.ss_flags = 0; |
203 | |
248 | |
204 | if (sigaltstack (&nstk, &ostk) < 0) |
249 | if (sigaltstack (&nstk, &ostk) < 0) |
205 | { |
250 | { |
206 | perror ("sigaltstack"); |
251 | perror ("sigaltstack"); |
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229 | sigaction (SIGUSR2, &osa, 0); |
274 | sigaction (SIGUSR2, &osa, 0); |
230 | sigprocmask (SIG_SETMASK, &osig, 0); |
275 | sigprocmask (SIG_SETMASK, &osig, 0); |
231 | |
276 | |
232 | # elif CORO_LOSER |
277 | # elif CORO_LOSER |
233 | |
278 | |
234 | setjmp (ctx->env); |
279 | coro_setjmp (ctx->env); |
235 | #if __CYGWIN__ |
280 | #if __CYGWIN__ && __i386 |
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281 | ctx->env[8] = (long) coro_init; |
236 | ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long); |
282 | ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long); |
237 | ctx->env[8] = (long)coro_init; |
283 | #elif __CYGWIN__ && __x86_64 |
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284 | ctx->env[7] = (long) coro_init; |
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285 | ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long); |
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286 | #elif defined(__MINGW32__) |
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287 | ctx->env[5] = (long) coro_init; |
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288 | ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long); |
238 | #elif defined(_M_IX86) |
289 | #elif defined(_M_IX86) |
239 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; |
290 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init; |
240 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
291 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
241 | #elif defined(_M_AMD64) |
292 | #elif defined(_M_AMD64) |
242 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; |
293 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init; |
243 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
294 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
244 | #elif defined(_M_IA64) |
295 | #elif defined(_M_IA64) |
245 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; |
296 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init; |
246 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
297 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
247 | #else |
298 | #else |
248 | #error "microsoft libc or architecture not supported" |
299 | #error "microsoft libc or architecture not supported" |
249 | #endif |
300 | #endif |
250 | |
301 | |
251 | # elif CORO_LINUX |
302 | # elif CORO_LINUX |
252 | |
303 | |
253 | _setjmp (ctx->env); |
304 | coro_setjmp (ctx->env); |
254 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
305 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
255 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
306 | ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; |
256 | ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
307 | ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
257 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
308 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
258 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
309 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
259 | ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize) - sizeof (long); |
310 | ctx->env[0].__jmpbuf[0].__sp = (int *) ((char *)sptr + ssize) - sizeof (long); |
260 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
311 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
261 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
312 | ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init; |
262 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
313 | ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); |
263 | #elif defined (__GNU_LIBRARY__) && defined (__amd64__) |
314 | #elif defined (__GNU_LIBRARY__) && defined (__amd64__) |
264 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
315 | ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; |
265 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
316 | ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); |
266 | #else |
317 | #else |
267 | #error "linux libc or architecture not supported" |
318 | #error "linux libc or architecture not supported" |
268 | #endif |
319 | #endif |
269 | |
320 | |
270 | # elif CORO_IRIX |
321 | # elif CORO_IRIX |
271 | |
322 | |
272 | sigsetjmp (ctx->env, 0); |
323 | coro_setjmp (ctx->env, 0); |
273 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
324 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
274 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
325 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
275 | |
326 | |
276 | # elif CORO_ASM |
327 | # elif CORO_ASM |
277 | |
328 | |
278 | ctx->sp = (void **)(ssize + (char *)sptr); |
329 | ctx->sp = (void **)(ssize + (char *)sptr); |
279 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
330 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
280 | *--ctx->sp = (void *)coro_init; |
331 | *--ctx->sp = (void *)coro_init; |
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332 | |
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333 | #if CORO_WIN_TIB |
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334 | *--ctx->sp = 0; /* ExceptionList */ |
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335 | *--ctx->sp = (char *)sptr + ssize; /* StackBase */ |
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336 | *--ctx->sp = sptr; /* StackLimit */ |
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337 | #endif |
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338 | |
281 | ctx->sp -= NUM_SAVED; |
339 | ctx->sp -= NUM_SAVED; |
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340 | memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED); |
282 | |
341 | |
283 | # elif CORO_UCONTEXT |
342 | # elif CORO_UCONTEXT |
284 | |
343 | |
285 | getcontext (&(ctx->uc)); |
344 | getcontext (&(ctx->uc)); |
286 | |
345 | |
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374 | args.arg = arg; |
433 | args.arg = arg; |
375 | args.self = ctx; |
434 | args.self = ctx; |
376 | args.main = &nctx; |
435 | args.main = &nctx; |
377 | |
436 | |
378 | pthread_attr_init (&attr); |
437 | pthread_attr_init (&attr); |
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438 | #if __UCLIBC__ |
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439 | /* exists, but is borked */ |
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440 | /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/ |
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441 | #else |
379 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
442 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
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443 | #endif |
380 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
444 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
381 | pthread_create (&ctx->id, &attr, coro_init, &args); |
445 | pthread_create (&ctx->id, &attr, coro_init, &args); |
382 | |
446 | |
383 | coro_transfer (args.main, args.self); |
447 | coro_transfer (args.main, args.self); |
384 | } |
448 | } |