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Comparing libcoro/coro.c (file contents):
Revision 1.49 by root, Fri Apr 2 19:04:04 2010 UTC vs.
Revision 1.58 by root, Fri Jun 10 12:27:02 2011 UTC

1/* 1/*
2 * Copyright (c) 2001-2009 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,
… …
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
91#if __linux && __amd64
92 /* we blindly assume on any __linux with __amd64 we have a new enough gas with .cfi_undefined support */
93 asm (".cfi_undefined rip");
94#endif
95
91 func ((void *)arg); 96 func ((void *)arg);
92 97
93 /* the new coro returned. bad. just abort() for now */ 98 /* the new coro returned. bad. just abort() for now */
94 abort (); 99 abort ();
95} 100}
… …
115 asm ( 120 asm (
116 ".text\n" 121 ".text\n"
117 ".globl coro_transfer\n" 122 ".globl coro_transfer\n"
118 ".type coro_transfer, @function\n" 123 ".type coro_transfer, @function\n"
119 "coro_transfer:\n" 124 "coro_transfer:\n"
125 /* windows, of course, gives a shit on the amd64 ABI and uses different registers */
126 /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */
120 #if __amd64 127 #if __amd64
128 #ifdef _WIN32
129 #define NUM_SAVED 8
130 "\tpush %rsi\n"
131 "\tpush %rdi\n"
132 "\tpush %rbp\n"
133 "\tpush %rbx\n"
134 "\tpush %r12\n"
135 "\tpush %r13\n"
136 "\tpush %r14\n"
137 "\tpush %r15\n"
121 #if CORO_WIN_TIB 138 #if CORO_WIN_TIB
122 #define NUM_SAVED 6+3
123 "\tpush %fs:0x0\n" 139 "\tpush %gs:0x0\n"
124 "\tpush %fs:0x8\n" 140 "\tpush %gs:0x8\n"
125 "\tpush %fs:0xc\n" 141 "\tpush %gs:0xc\n"
142 #endif
143 "\tmov %rsp, (%rcx)\n"
144 "\tmov (%rdx), %rsp\n"
145 #if CORO_WIN_TIB
146 "\tpop %gs:0xc\n"
147 "\tpop %gs:0x8\n"
148 "\tpop %gs:0x0\n"
149 #endif
150 "\tpop %r15\n"
151 "\tpop %r14\n"
152 "\tpop %r13\n"
153 "\tpop %r12\n"
154 "\tpop %rbx\n"
155 "\tpop %rbp\n"
156 "\tpop %rdi\n"
157 "\tpop %rsi\n"
126 #else 158 #else
127 #define NUM_SAVED 6 159 #define NUM_SAVED 6
128 #endif
129 "\tpush %rbp\n" 160 "\tpush %rbp\n"
130 "\tpush %rbx\n" 161 "\tpush %rbx\n"
131 "\tpush %r12\n" 162 "\tpush %r12\n"
132 "\tpush %r13\n" 163 "\tpush %r13\n"
133 "\tpush %r14\n" 164 "\tpush %r14\n"
134 "\tpush %r15\n" 165 "\tpush %r15\n"
135 "\tmov %rsp, (%rdi)\n" 166 "\tmov %rsp, (%rdi)\n"
136 "\tmov (%rsi), %rsp\n" 167 "\tmov (%rsi), %rsp\n"
137 "\tpop %r15\n" 168 "\tpop %r15\n"
138 "\tpop %r14\n" 169 "\tpop %r14\n"
139 "\tpop %r13\n" 170 "\tpop %r13\n"
140 "\tpop %r12\n" 171 "\tpop %r12\n"
141 "\tpop %rbx\n" 172 "\tpop %rbx\n"
142 "\tpop %rbp\n" 173 "\tpop %rbp\n"
143 #if CORO_WIN_TIB
144 "\tpop %fs:0xc\n"
145 "\tpop %fs:0x8\n"
146 "\tpop %fs:0x0\n"
147 #endif 174 #endif
148 #elif __i386 175 #elif __i386
149 #if CORO_WIN_TIB
150 #define NUM_SAVED 4+3
151 "\tpush %fs:0x0\n"
152 "\tpush %fs:0x4\n"
153 "\tpush %fs:0x8\n"
154 #else
155 #define NUM_SAVED 4 176 #define NUM_SAVED 4
156 #endif
157 "\tpush %ebp\n" 177 "\tpush %ebp\n"
158 "\tpush %ebx\n" 178 "\tpush %ebx\n"
159 "\tpush %esi\n" 179 "\tpush %esi\n"
160 "\tpush %edi\n" 180 "\tpush %edi\n"
161 "\tmov %esp, (%eax)\n"
162 "\tmov (%edx), %esp\n"
163 "\tpop %edi\n"
164 "\tpop %esi\n"
165 "\tpop %ebx\n"
166 "\tpop %ebp\n"
167 #if CORO_WIN_TIB 181 #if CORO_WIN_TIB
168 "\tpop %fs:0x8\n" 182 "\tpush %fs:0\n"
169 "\tpop %fs:0x4\n" 183 "\tpush %fs:4\n"
170 "\tpop %fs:0x0\n" 184 "\tpush %fs:8\n"
171 #endif 185 #endif
186 "\tmov %esp, (%eax)\n"
187 "\tmov (%edx), %esp\n"
188 #if CORO_WIN_TIB
189 "\tpop %fs:8\n"
190 "\tpop %fs:4\n"
191 "\tpop %fs:0\n"
192 #endif
193 "\tpop %edi\n"
194 "\tpop %esi\n"
195 "\tpop %ebx\n"
196 "\tpop %ebp\n"
172 #else 197 #else
173 #error unsupported architecture 198 #error unsupported architecture
174 #endif 199 #endif
175 "\tret\n" 200 "\tret\n"
176 ); 201 );
… …
212 perror ("sigaction"); 237 perror ("sigaction");
213 abort (); 238 abort ();
214 } 239 }
215 240
216 /* set the new stack */ 241 /* set the new stack */
217 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 242 nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */
218 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); 243 nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize);
219 nstk.ss_flags = 0; 244 nstk.ss_flags = 0;
220 245
221 if (sigaltstack (&nstk, &ostk) < 0) 246 if (sigaltstack (&nstk, &ostk) < 0)
222 { 247 {
223 perror ("sigaltstack"); 248 perror ("sigaltstack");
… …
299# elif CORO_ASM 324# elif CORO_ASM
300 325
301 ctx->sp = (void **)(ssize + (char *)sptr); 326 ctx->sp = (void **)(ssize + (char *)sptr);
302 *--ctx->sp = (void *)abort; /* needed for alignment only */ 327 *--ctx->sp = (void *)abort; /* needed for alignment only */
303 *--ctx->sp = (void *)coro_init; 328 *--ctx->sp = (void *)coro_init;
329
330 #if CORO_WIN_TIB
331 *--ctx->sp = 0; /* ExceptionList */
332 *--ctx->sp = (char *)sptr + ssize; /* StackBase */
333 *--ctx->sp = sptr; /* StackLimit */
334 #endif
335
304 ctx->sp -= NUM_SAVED; 336 ctx->sp -= NUM_SAVED;
337 memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED);
305 338
306# elif CORO_UCONTEXT 339# elif CORO_UCONTEXT
307 340
308 getcontext (&(ctx->uc)); 341 getcontext (&(ctx->uc));
309 342
… …
397 args.arg = arg; 430 args.arg = arg;
398 args.self = ctx; 431 args.self = ctx;
399 args.main = &nctx; 432 args.main = &nctx;
400 433
401 pthread_attr_init (&attr); 434 pthread_attr_init (&attr);
435#if __UCLIBC__
436 /* exists, but is borked */
437 /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/
438#else
402 pthread_attr_setstack (&attr, sptr, (size_t)ssize); 439 pthread_attr_setstack (&attr, sptr, (size_t)ssize);
440#endif
403 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); 441 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
404 pthread_create (&ctx->id, &attr, coro_init, &args); 442 pthread_create (&ctx->id, &attr, coro_init, &args);
405 443
406 coro_transfer (args.main, args.self); 444 coro_transfer (args.main, args.self);
407 } 445 }

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