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Comparing libcoro/coro.c (file contents):
Revision 1.58 by root, Fri Jun 10 12:27:02 2011 UTC vs.
Revision 1.65 by root, Wed Dec 5 13:10:21 2012 UTC

1/* 1/*
2 * Copyright (c) 2001-2011 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,
8 * this list of conditions and the following disclaimer. 8 * this list of conditions and the following disclaimer.
9 * 9 *
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the 11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution. 12 * documentation and/or other materials provided with the distribution.
13 * 13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
16 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 16 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
17 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 17 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
18 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 18 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
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 91#if __GCC_HAVE_DWARF2_CFI_ASM && __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"); 92 asm (".cfi_undefined rip");
94#endif 93#endif
95 94
96 func ((void *)arg); 95 func ((void *)arg);
97 96
… …
115 114
116# endif 115# endif
117 116
118# if CORO_ASM 117# if CORO_ASM
119 118
119 #if _WIN32 || __CYGWIN__
120 #define CORO_WIN_TIB 1
121 #endif
122
120 asm ( 123 asm (
121 ".text\n" 124 "\t.text\n"
125 #if _WIN32 || __CYGWIN__
126 "\t.globl _coro_transfer\n"
127 "_coro_transfer:\n"
128 #else
122 ".globl coro_transfer\n" 129 "\t.globl coro_transfer\n"
123 ".type coro_transfer, @function\n"
124 "coro_transfer:\n" 130 "coro_transfer:\n"
131 #endif
125 /* windows, of course, gives a shit on the amd64 ABI and uses different registers */ 132 /* 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 */ 133 /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */
127 #if __amd64 134 #if __amd64
128 #ifdef _WIN32 135
136 #if _WIN32 || __CYGWIN__
129 #define NUM_SAVED 8 137 #define NUM_SAVED 29
138 "\tsubq $168, %rsp\t" /* one dummy qword to improve alignment */
139 "\tmovaps %xmm6, (%rsp)\n"
140 "\tmovaps %xmm7, 16(%rsp)\n"
141 "\tmovaps %xmm8, 32(%rsp)\n"
142 "\tmovaps %xmm9, 48(%rsp)\n"
143 "\tmovaps %xmm10, 64(%rsp)\n"
144 "\tmovaps %xmm11, 80(%rsp)\n"
145 "\tmovaps %xmm12, 96(%rsp)\n"
146 "\tmovaps %xmm13, 112(%rsp)\n"
147 "\tmovaps %xmm14, 128(%rsp)\n"
148 "\tmovaps %xmm15, 144(%rsp)\n"
130 "\tpush %rsi\n" 149 "\tpushq %rsi\n"
131 "\tpush %rdi\n" 150 "\tpushq %rdi\n"
132 "\tpush %rbp\n" 151 "\tpushq %rbp\n"
133 "\tpush %rbx\n" 152 "\tpushq %rbx\n"
134 "\tpush %r12\n" 153 "\tpushq %r12\n"
135 "\tpush %r13\n" 154 "\tpushq %r13\n"
136 "\tpush %r14\n" 155 "\tpushq %r14\n"
137 "\tpush %r15\n" 156 "\tpushq %r15\n"
138 #if CORO_WIN_TIB 157 #if CORO_WIN_TIB
139 "\tpush %gs:0x0\n" 158 "\tpushq %fs:0x0\n"
140 "\tpush %gs:0x8\n" 159 "\tpushq %fs:0x8\n"
141 "\tpush %gs:0xc\n" 160 "\tpushq %fs:0xc\n"
142 #endif 161 #endif
143 "\tmov %rsp, (%rcx)\n" 162 "\tmovq %rsp, (%rcx)\n"
144 "\tmov (%rdx), %rsp\n" 163 "\tmovq (%rdx), %rsp\n"
145 #if CORO_WIN_TIB 164 #if CORO_WIN_TIB
146 "\tpop %gs:0xc\n" 165 "\tpopq %fs:0xc\n"
147 "\tpop %gs:0x8\n" 166 "\tpopq %fs:0x8\n"
148 "\tpop %gs:0x0\n" 167 "\tpopq %fs:0x0\n"
149 #endif 168 #endif
150 "\tpop %r15\n" 169 "\tpopq %r15\n"
151 "\tpop %r14\n" 170 "\tpopq %r14\n"
152 "\tpop %r13\n" 171 "\tpopq %r13\n"
153 "\tpop %r12\n" 172 "\tpopq %r12\n"
154 "\tpop %rbx\n" 173 "\tpopq %rbx\n"
155 "\tpop %rbp\n" 174 "\tpopq %rbp\n"
156 "\tpop %rdi\n" 175 "\tpopq %rdi\n"
157 "\tpop %rsi\n" 176 "\tpopq %rsi\n"
177 "\tmovaps (%rsp), %xmm6\n"
178 "\tmovaps 16(%rsp), %xmm7\n"
179 "\tmovaps 32(%rsp), %xmm8\n"
180 "\tmovaps 48(%rsp), %xmm9\n"
181 "\tmovaps 64(%rsp), %xmm10\n"
182 "\tmovaps 80(%rsp), %xmm11\n"
183 "\tmovaps 96(%rsp), %xmm12\n"
184 "\tmovaps 112(%rsp), %xmm13\n"
185 "\tmovaps 128(%rsp), %xmm14\n"
186 "\tmovaps 144(%rsp), %xmm15\n"
187 "\taddq $168, %rsp\n"
158 #else 188 #else
159 #define NUM_SAVED 6 189 #define NUM_SAVED 6
160 "\tpush %rbp\n" 190 "\tpushq %rbp\n"
161 "\tpush %rbx\n" 191 "\tpushq %rbx\n"
162 "\tpush %r12\n" 192 "\tpushq %r12\n"
163 "\tpush %r13\n" 193 "\tpushq %r13\n"
164 "\tpush %r14\n" 194 "\tpushq %r14\n"
165 "\tpush %r15\n" 195 "\tpushq %r15\n"
166 "\tmov %rsp, (%rdi)\n" 196 "\tmovq %rsp, (%rdi)\n"
167 "\tmov (%rsi), %rsp\n" 197 "\tmovq (%rsi), %rsp\n"
168 "\tpop %r15\n" 198 "\tpopq %r15\n"
169 "\tpop %r14\n" 199 "\tpopq %r14\n"
170 "\tpop %r13\n" 200 "\tpopq %r13\n"
171 "\tpop %r12\n" 201 "\tpopq %r12\n"
172 "\tpop %rbx\n" 202 "\tpopq %rbx\n"
173 "\tpop %rbp\n" 203 "\tpopq %rbp\n"
174 #endif 204 #endif
205 "\tpopq %rcx\n"
206 "\tjmpq *%rcx\n"
207
175 #elif __i386 208 #elif __i386
209
176 #define NUM_SAVED 4 210 #define NUM_SAVED 4
177 "\tpush %ebp\n" 211 "\tpushl %ebp\n"
178 "\tpush %ebx\n" 212 "\tpushl %ebx\n"
179 "\tpush %esi\n" 213 "\tpushl %esi\n"
180 "\tpush %edi\n" 214 "\tpushl %edi\n"
181 #if CORO_WIN_TIB 215 #if CORO_WIN_TIB
216 #undef NUM_SAVED
217 #define NUM_SAVED 7
182 "\tpush %fs:0\n" 218 "\tpushl %fs:0\n"
183 "\tpush %fs:4\n" 219 "\tpushl %fs:4\n"
184 "\tpush %fs:8\n" 220 "\tpushl %fs:8\n"
185 #endif 221 #endif
186 "\tmov %esp, (%eax)\n" 222 "\tmovl %esp, (%eax)\n"
187 "\tmov (%edx), %esp\n" 223 "\tmovl (%edx), %esp\n"
188 #if CORO_WIN_TIB 224 #if CORO_WIN_TIB
189 "\tpop %fs:8\n" 225 "\tpopl %fs:8\n"
190 "\tpop %fs:4\n" 226 "\tpopl %fs:4\n"
191 "\tpop %fs:0\n" 227 "\tpopl %fs:0\n"
192 #endif 228 #endif
193 "\tpop %edi\n" 229 "\tpopl %edi\n"
194 "\tpop %esi\n" 230 "\tpopl %esi\n"
195 "\tpop %ebx\n" 231 "\tpopl %ebx\n"
196 "\tpop %ebp\n" 232 "\tpopl %ebp\n"
233 "\tpopl %ecx\n"
234 "\tjmpl *%ecx\n"
235
197 #else 236 #else
198 #error unsupported architecture 237 #error unsupported architecture
199 #endif 238 #endif
200 "\tret\n"
201 ); 239 );
202 240
203# endif 241# endif
204 242
205void 243void
… …
278 ctx->env[8] = (long) coro_init; 316 ctx->env[8] = (long) coro_init;
279 ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long); 317 ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long);
280 #elif __CYGWIN__ && __x86_64 318 #elif __CYGWIN__ && __x86_64
281 ctx->env[7] = (long) coro_init; 319 ctx->env[7] = (long) coro_init;
282 ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long); 320 ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long);
283 #elif defined(__MINGW32__) 321 #elif defined __MINGW32__
284 ctx->env[5] = (long) coro_init; 322 ctx->env[5] = (long) coro_init;
285 ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long); 323 ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long);
286 #elif defined(_M_IX86) 324 #elif defined _M_IX86
287 ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init; 325 ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init;
288 ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); 326 ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
289 #elif defined(_M_AMD64) 327 #elif defined _M_AMD64
290 ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init; 328 ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init;
291 ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); 329 ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
292 #elif defined(_M_IA64) 330 #elif defined _M_IA64
293 ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init; 331 ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init;
294 ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); 332 ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
295 #else 333 #else
296 #error "microsoft libc or architecture not supported" 334 #error "microsoft libc or architecture not supported"
297 #endif 335 #endif
… …
433 471
434 pthread_attr_init (&attr); 472 pthread_attr_init (&attr);
435#if __UCLIBC__ 473#if __UCLIBC__
436 /* exists, but is borked */ 474 /* exists, but is borked */
437 /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/ 475 /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/
476#elif __CYGWIN__
477 /* POSIX, not here */
478 pthread_attr_setstacksize (&attr, (size_t)ssize);
438#else 479#else
439 pthread_attr_setstack (&attr, sptr, (size_t)ssize); 480 pthread_attr_setstack (&attr, sptr, (size_t)ssize);
440#endif 481#endif
441 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); 482 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
442 pthread_create (&ctx->id, &attr, coro_init, &args); 483 pthread_create (&ctx->id, &attr, coro_init, &args);
… …
459 } 500 }
460 501
461 pthread_cond_destroy (&ctx->cv); 502 pthread_cond_destroy (&ctx->cv);
462} 503}
463 504
505/*****************************************************************************/
506/* fiber backend */
507/*****************************************************************************/
508#elif CORO_FIBER
509
510#define WIN32_LEAN_AND_MEAN
511#define _WIN32_WINNT 0x0400
512#include <windows.h>
513
514VOID CALLBACK
515coro_init (PVOID arg)
516{
517 coro_context *ctx = (coro_context *)arg;
518
519 ctx->coro (ctx->arg);
520}
521
522void
523coro_transfer (coro_context *prev, coro_context *next)
524{
525 if (!prev->fiber)
526 {
527 prev->fiber = GetCurrentFiber ();
528
529 if (prev->fiber == 0 || prev->fiber == (void *)0x1e00)
530 prev->fiber = ConvertThreadToFiber (0);
531 }
532
533 SwitchToFiber (next->fiber);
534}
535
536void
537coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize)
538{
539 ctx->fiber = 0;
540 ctx->coro = coro;
541 ctx->arg = arg;
542
543 if (!coro)
544 return;
545
546 ctx->fiber = CreateFiber (ssize, coro_init, ctx);
547}
548
549void
550coro_destroy (coro_context *ctx)
551{
552 DeleteFiber (ctx->fiber);
553}
554
464#else 555#else
465# error unsupported backend 556# error unsupported backend
466#endif 557#endif
467 558

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