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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 1.56 by root, Mon May 30 02:32:06 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#ifdef __linux && __elf
92 /* we blindly assume on any __linux with __elf 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
121 #if CORO_WIN_TIB
122 #define NUM_SAVED 6+3
123 "\tpush %fs:0x0\n"
124 "\tpush %fs:0x8\n"
125 "\tpush %fs:0xc\n"
126 #else
127 #define NUM_SAVED 6 128 #define NUM_SAVED 6
128 #endif
129 "\tpush %rbp\n" 129 "\tpush %rbp\n"
130 "\tpush %rbx\n" 130 "\tpush %rbx\n"
131 "\tpush %r12\n" 131 "\tpush %r12\n"
132 "\tpush %r13\n" 132 "\tpush %r13\n"
133 "\tpush %r14\n" 133 "\tpush %r14\n"
134 "\tpush %r15\n" 134 "\tpush %r15\n"
135 #if CORO_WIN_TIB
136 "\tpush %gs:0x0\n"
137 "\tpush %gs:0x8\n"
138 "\tpush %gs:0xc\n"
139 #endif
135 "\tmov %rsp, (%rdi)\n" 140 "\tmov %rsp, (%rdi)\n"
136 "\tmov (%rsi), %rsp\n" 141 "\tmov (%rsi), %rsp\n"
142 #if CORO_WIN_TIB
143 "\tpop %gs:0xc\n"
144 "\tpop %gs:0x8\n"
145 "\tpop %gs:0x0\n"
146 #endif
137 "\tpop %r15\n" 147 "\tpop %r15\n"
138 "\tpop %r14\n" 148 "\tpop %r14\n"
139 "\tpop %r13\n" 149 "\tpop %r13\n"
140 "\tpop %r12\n" 150 "\tpop %r12\n"
141 "\tpop %rbx\n" 151 "\tpop %rbx\n"
142 "\tpop %rbp\n" 152 "\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
148 #elif __i386 153 #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 4 154 #define NUM_SAVED 4
156 #endif
157 "\tpush %ebp\n" 155 "\tpush %ebp\n"
158 "\tpush %ebx\n" 156 "\tpush %ebx\n"
159 "\tpush %esi\n" 157 "\tpush %esi\n"
160 "\tpush %edi\n" 158 "\tpush %edi\n"
159 #if CORO_WIN_TIB
160 "\tpush %fs:0\n"
161 "\tpush %fs:4\n"
162 "\tpush %fs:8\n"
163 #endif
161 "\tmov %esp, (%eax)\n" 164 "\tmov %esp, (%eax)\n"
162 "\tmov (%edx), %esp\n" 165 "\tmov (%edx), %esp\n"
166 #if CORO_WIN_TIB
167 "\tpop %fs:8\n"
168 "\tpop %fs:4\n"
169 "\tpop %fs:0\n"
170 #endif
163 "\tpop %edi\n" 171 "\tpop %edi\n"
164 "\tpop %esi\n" 172 "\tpop %esi\n"
165 "\tpop %ebx\n" 173 "\tpop %ebx\n"
166 "\tpop %ebp\n" 174 "\tpop %ebp\n"
167 #if CORO_WIN_TIB
168 "\tpop %fs:0x8\n"
169 "\tpop %fs:0x4\n"
170 "\tpop %fs:0x0\n"
171 #endif
172 #else 175 #else
173 #error unsupported architecture 176 #error unsupported architecture
174 #endif 177 #endif
175 "\tret\n" 178 "\tret\n"
176 ); 179 );
… …
212 perror ("sigaction"); 215 perror ("sigaction");
213 abort (); 216 abort ();
214 } 217 }
215 218
216 /* set the new stack */ 219 /* set the new stack */
217 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 220 nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */
218 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); 221 nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize);
219 nstk.ss_flags = 0; 222 nstk.ss_flags = 0;
220 223
221 if (sigaltstack (&nstk, &ostk) < 0) 224 if (sigaltstack (&nstk, &ostk) < 0)
222 { 225 {
223 perror ("sigaltstack"); 226 perror ("sigaltstack");
… …
299# elif CORO_ASM 302# elif CORO_ASM
300 303
301 ctx->sp = (void **)(ssize + (char *)sptr); 304 ctx->sp = (void **)(ssize + (char *)sptr);
302 *--ctx->sp = (void *)abort; /* needed for alignment only */ 305 *--ctx->sp = (void *)abort; /* needed for alignment only */
303 *--ctx->sp = (void *)coro_init; 306 *--ctx->sp = (void *)coro_init;
307
308 #if CORO_WIN_TIB
309 *--ctx->sp = 0; /* ExceptionList */
310 *--ctx->sp = (char *)sptr + ssize; /* StackBase */
311 *--ctx->sp = sptr; /* StackLimit */
312 #endif
313
304 ctx->sp -= NUM_SAVED; 314 ctx->sp -= NUM_SAVED;
315 memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED);
305 316
306# elif CORO_UCONTEXT 317# elif CORO_UCONTEXT
307 318
308 getcontext (&(ctx->uc)); 319 getcontext (&(ctx->uc));
309 320
… …
397 args.arg = arg; 408 args.arg = arg;
398 args.self = ctx; 409 args.self = ctx;
399 args.main = &nctx; 410 args.main = &nctx;
400 411
401 pthread_attr_init (&attr); 412 pthread_attr_init (&attr);
413#if __UCLIBC__
414 /* exists, but is borked */
415 /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/
416#else
402 pthread_attr_setstack (&attr, sptr, (size_t)ssize); 417 pthread_attr_setstack (&attr, sptr, (size_t)ssize);
418#endif
403 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); 419 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
404 pthread_create (&ctx->id, &attr, coro_init, &args); 420 pthread_create (&ctx->id, &attr, coro_init, &args);
405 421
406 coro_transfer (args.main, args.self); 422 coro_transfer (args.main, args.self);
407 } 423 }

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