[ViewVC] Diff of: cvs/libcoro/coro.c

Comparing libcoro/coro.c (file contents):
Revision 1.28 by root, Sun Jan 20 17:30:24 2008 UTC vs.
Revision 1.49 by root, Fri Apr 2 19:04:04 2010 UTC

…		…
1	/*	1	/*
2	* Copyright (c) 2001-2008 Marc Alexander Lehmann <schmorp@schmorp.de>	2	* Copyright (c) 2001-2009 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	*
14	* 3. The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.
16	*	13	*
17	* 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
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	15	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	16	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* 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-
23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,	20	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-	21	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED	22	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26	* OF THE POSSIBILITY OF SUCH DAMAGE.	23	* OF THE POSSIBILITY OF SUCH DAMAGE.
27	*	24	*
		25	* Alternatively, the contents of this file may be used under the terms of
		26	* the GNU General Public License ("GPL") version 2 or any later version,
		27	* in which case the provisions of the GPL are applicable instead of
		28	* the above. If you wish to allow the use of your version of this file
		29	* only under the terms of the GPL and not to allow others to use your
		30	* version of this file under the BSD license, indicate your decision
		31	* by deleting the provisions above and replace them with the notice
		32	* and other provisions required by the GPL. If you do not delete the
		33	* provisions above, a recipient may use your version of this file under
		34	* either the BSD or the GPL.
		35	*
28	* This library is modelled strictly after Ralf S. Engelschalls article at	36	* This library is modelled strictly after Ralf S. Engelschalls article at
29	* http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must	37	* http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must
30	* go to Ralf S. Engelschall <rse@engelschall.com>.	38	* go to Ralf S. Engelschall <rse@engelschall.com>.
31	*/	39	*/
32		40
33	#include "coro.h"	41	#include "coro.h"
34		42
		43	#include <string.h>
		44
		45	/*****************************************************************************/
		46	/* ucontext/setjmp/asm backends */
		47	/*****************************************************************************/
		48	#if CORO_UCONTEXT \|\| CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
		49
		50	# if CORO_UCONTEXT
		51	# include <stddef.h>
		52	# endif
		53
35	#if !defined(STACK_ADJUST_PTR)	54	# if !defined(STACK_ADJUST_PTR)
		55	# if __sgi
36	/* IRIX is decidedly NON-unix */	56	/* IRIX is decidedly NON-unix */
37	# if __sgi
38	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	57	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
39	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)	58	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
40	# elif __i386__ && CORO_LINUX	59	# elif (__i386__ && CORO_LINUX) \|\| (_M_IX86 && CORO_LOSER)
41	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))	60	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
42	# define STACK_ADJUST_SIZE(sp,ss) (ss)	61	# define STACK_ADJUST_SIZE(sp,ss) (ss)
43	# elif __amd64__ && CORO_LINUX	62	# elif (__amd64__ && CORO_LINUX) \|\| ((_M_AMD64 \|\| _M_IA64) && CORO_LOSER)
44	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	63	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
45	# define STACK_ADJUST_SIZE(sp,ss) (ss)	64	# define STACK_ADJUST_SIZE(sp,ss) (ss)
46	# else	65	# else
47	# define STACK_ADJUST_PTR(sp,ss) (sp)	66	# define STACK_ADJUST_PTR(sp,ss) (sp)
48	# define STACK_ADJUST_SIZE(sp,ss) (ss)	67	# define STACK_ADJUST_SIZE(sp,ss) (ss)
49	# endif	68	# endif
50	#endif	69	# endif
51		70
52	#if CORO_UCONTEXT
53	# include <stddef.h>
54	#endif
55
56	#if CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
57
58	#include <stdlib.h>	71	# include <stdlib.h>
59		72
60	#if CORO_SJLJ	73	# if CORO_SJLJ
61	# include <stdio.h>	74	# include <stdio.h>
62	# include <signal.h>	75	# include <signal.h>
63	# include <unistd.h>	76	# include <unistd.h>
64	#endif	77	# endif
65		78
66	static volatile coro_func coro_init_func;	79	static coro_func coro_init_func;
67	static volatile void *coro_init_arg;	80	static void *coro_init_arg;
68	static volatile coro_context new_coro, create_coro;	81	static coro_context new_coro, create_coro;
69
70	/* what we really want to detect here is wether we use a new-enough version of GAS */
71	/* instead, check for gcc 3, ELF and GNU/Linux and hope for the best */
72	#if __GNUC__ >= 3 && __ELF__ && __linux__
73	# define HAVE_CFI 1
74	#endif
75		82
76	static void	83	static void
77	coro_init (void)	84	coro_init (void)
78	{	85	{
79	volatile coro_func func = coro_init_func;	86	volatile coro_func func = coro_init_func;
80	volatile void *arg = coro_init_arg;	87	volatile void *arg = coro_init_arg;
81		88
82	coro_transfer ((coro_context )new_coro, (coro_context )create_coro);	89	coro_transfer (new_coro, create_coro);
83		90
84	func ((void *)arg);	91	func ((void *)arg);
85		92
86	/* the new coro returned. bad. just abort() for now */	93	/* the new coro returned. bad. just abort() for now */
87	abort ();	94	abort ();
88	}	95	}
89		96
90	# if CORO_SJLJ	97	# if CORO_SJLJ
91		98
92	static volatile int trampoline_count;	99	static volatile int trampoline_done;
93		100
94	/* trampoline signal handler */	101	/* trampoline signal handler */
95	static void	102	static void
96	trampoline (int sig)	103	trampoline (int sig)
97	{	104	{
98	if (setjmp (((coro_context *)new_coro)->env))	105	if (coro_setjmp (new_coro->env))
99	{
100	#if HAVE_CFI
101	asm (".cfi_startproc");
102	#endif
103	coro_init (); /* start it */	106	coro_init (); /* start it */
104	#if HAVE_CFI
105	asm (".cfi_endproc");
106	#endif
107	}
108	else	107	else
109	trampoline_count++;	108	trampoline_done = 1;
110	}	109	}
111		110
112	# endif
113
114	#endif	111	# endif
115		112
116	#if CORO_ASM	113	# if CORO_ASM
117	void __attribute__((__noinline__, __fastcall__))	114
118	coro_transfer (struct coro_context prev, struct coro_context next)	115	asm (
119	{	116	".text\n"
120	asm volatile (	117	".globl coro_transfer\n"
		118	".type coro_transfer, @function\n"
		119	"coro_transfer:\n"
121	#if __amd64	120	#if __amd64
122	# define NUM_CLOBBERED 5	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	#endif
		129	"\tpush %rbp\n"
123	"push %%rbx\n\t"	130	"\tpush %rbx\n"
124	"push %%r12\n\t"	131	"\tpush %r12\n"
125	"push %%r13\n\t"	132	"\tpush %r13\n"
126	"push %%r14\n\t"	133	"\tpush %r14\n"
127	"push %%r15\n\t"	134	"\tpush %r15\n"
128	"mov %%rsp, %0\n\t"	135	"\tmov %rsp, (%rdi)\n"
129	"mov %1, %%rsp\n\t"	136	"\tmov (%rsi), %rsp\n"
130	"pop %%r15\n\t"	137	"\tpop %r15\n"
131	"pop %%r14\n\t"	138	"\tpop %r14\n"
132	"pop %%r13\n\t"	139	"\tpop %r13\n"
133	"pop %%r12\n\t"	140	"\tpop %r12\n"
134	"pop %%rbx\n\t"	141	"\tpop %rbx\n"
		142	"\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
135	#elif __i386	148	#elif __i386
136	# define NUM_CLOBBERED 4	149	#if CORO_WIN_TIB
137	"push %%ebx\n\t"	150	#define NUM_SAVED 4+3
138	"push %%esi\n\t"	151	"\tpush %fs:0x0\n"
139	"push %%edi\n\t"	152	"\tpush %fs:0x4\n"
		153	"\tpush %fs:0x8\n"
		154	#else
		155	#define NUM_SAVED 4
		156	#endif
140	"push %%ebp\n\t"	157	"\tpush %ebp\n"
141	"mov %%esp, %0\n\t"	158	"\tpush %ebx\n"
142	"mov %1, %%esp\n\t"	159	"\tpush %esi\n"
143	"pop %%ebp\n\t"	160	"\tpush %edi\n"
		161	"\tmov %esp, (%eax)\n"
		162	"\tmov (%edx), %esp\n"
144	"pop %%edi\n\t"	163	"\tpop %edi\n"
145	"pop %%esi\n\t"	164	"\tpop %esi\n"
146	"pop %%ebx\n\t"	165	"\tpop %ebx\n"
147	#else	166	"\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
148	# error unsupported architecture	173	#error unsupported architecture
149	#endif	174	#endif
150	: "=m" (prev->sp)	175	"\tret\n"
151	: "m" (next->sp)
152	);	176	);
153	}	177
154	#endif	178	# endif
155		179
156	/* initialize a machine state */	180	void
157	void coro_create (coro_context *ctx,	181	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
158	coro_func coro, void *arg,
159	void *sptr, long ssize)
160	{	182	{
161	#if CORO_UCONTEXT	183	coro_context nctx;
162
163	getcontext (&(ctx->uc));
164
165	ctx->uc.uc_link = 0;
166	ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
167	ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
168	ctx->uc.uc_stack.ss_flags = 0;
169
170	makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
171
172	#elif CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
173
174	# if CORO_SJLJ	184	# if CORO_SJLJ
175	stack_t ostk, nstk;	185	stack_t ostk, nstk;
176	struct sigaction osa, nsa;	186	struct sigaction osa, nsa;
177	sigset_t nsig, osig;	187	sigset_t nsig, osig;
178	# endif	188	# endif
179	coro_context nctx;	189
		190	if (!coro)
		191	return;
180		192
181	coro_init_func = coro;	193	coro_init_func = coro;
182	coro_init_arg = arg;	194	coro_init_arg = arg;
183		195
184	new_coro = ctx;	196	new_coro = ctx;
…		…
210	{	222	{
211	perror ("sigaltstack");	223	perror ("sigaltstack");
212	abort ();	224	abort ();
213	}	225	}
214		226
215	trampoline_count = 0;	227	trampoline_done = 0;
216	kill (getpid (), SIGUSR2);	228	kill (getpid (), SIGUSR2);
217	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);	229	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
218		230
219	while (!trampoline_count)	231	while (!trampoline_done)
220	sigsuspend (&nsig);	232	sigsuspend (&nsig);
221		233
222	sigaltstack (0, &nstk);	234	sigaltstack (0, &nstk);
223	nstk.ss_flags = SS_DISABLE;	235	nstk.ss_flags = SS_DISABLE;
224	if (sigaltstack (&nstk, 0) < 0)	236	if (sigaltstack (&nstk, 0) < 0)
…		…
230		242
231	if (~ostk.ss_flags & SS_DISABLE)	243	if (~ostk.ss_flags & SS_DISABLE)
232	sigaltstack (&ostk, 0);	244	sigaltstack (&ostk, 0);
233		245
234	sigaction (SIGUSR2, &osa, 0);	246	sigaction (SIGUSR2, &osa, 0);
235
236	sigprocmask (SIG_SETMASK, &osig, 0);	247	sigprocmask (SIG_SETMASK, &osig, 0);
237		248
238	# elif CORO_LOSER	249	# elif CORO_LOSER
239		250
240	setjmp (ctx->env);	251	coro_setjmp (ctx->env);
241	#if __CYGWIN__	252	#if __CYGWIN__ && __i386
242	ctx->env[7] = (long)((char *)sptr + ssize);	253	ctx->env[8] = (long) coro_init;
243	ctx->env[8] = (long)coro_init;	254	ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long);
		255	#elif __CYGWIN__ && __x86_64
		256	ctx->env[7] = (long) coro_init;
		257	ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long);
		258	#elif defined(__MINGW32__)
		259	ctx->env[5] = (long) coro_init;
		260	ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long);
244	#elif defined(_M_IX86)	261	#elif defined(_M_IX86)
245	((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;	262	((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init;
246	((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize);	263	((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
247	#elif defined(_M_AMD64)	264	#elif defined(_M_AMD64)
248	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;	265	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init;
249	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize);	266	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
250	#elif defined(_M_IA64)	267	#elif defined(_M_IA64)
251	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;	268	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init;
252	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize);	269	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
		270	#else
		271	#error "microsoft libc or architecture not supported"
		272	#endif
		273
		274	# elif CORO_LINUX
		275
		276	coro_setjmp (ctx->env);
		277	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
		278	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
		279	ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		280	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
		281	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
		282	ctx->env[0].__jmpbuf[0].__sp = (int ) ((char )sptr + ssize) - sizeof (long);
		283	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
		284	ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init;
		285	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
		286	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
		287	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
		288	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
		289	#else
		290	#error "linux libc or architecture not supported"
		291	#endif
		292
		293	# elif CORO_IRIX
		294
		295	coro_setjmp (ctx->env, 0);
		296	ctx->env[JB_PC] = (__uint64_t)coro_init;
		297	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		298
		299	# elif CORO_ASM
		300
		301	ctx->sp = (void *)(ssize + (char )sptr);
		302	--ctx->sp = (void )abort; /* needed for alignment only */
		303	--ctx->sp = (void )coro_init;
		304	ctx->sp -= NUM_SAVED;
		305
		306	# elif CORO_UCONTEXT
		307
		308	getcontext (&(ctx->uc));
		309
		310	ctx->uc.uc_link = 0;
		311	ctx->uc.uc_stack.ss_sp = sptr;
		312	ctx->uc.uc_stack.ss_size = (size_t)ssize;
		313	ctx->uc.uc_stack.ss_flags = 0;
		314
		315	makecontext (&(ctx->uc), (void (*)())coro_init, 0);
		316
		317	# endif
		318
		319	coro_transfer (create_coro, new_coro);
		320	}
		321
		322	/*****************************************************************************/
		323	/* pthread backend */
		324	/*****************************************************************************/
		325	#elif CORO_PTHREAD
		326
		327	/* this mutex will be locked by the running coroutine */
		328	pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;
		329
		330	struct coro_init_args
		331	{
		332	coro_func func;
		333	void *arg;
		334	coro_context self, main;
		335	};
		336
		337	static pthread_t null_tid;
		338
		339	/* I'd so love to cast pthread_mutex_unlock to void ()(void )... */
		340	static void
		341	mutex_unlock_wrapper (void *arg)
		342	{
		343	pthread_mutex_unlock ((pthread_mutex_t *)arg);
		344	}
		345
		346	static void *
		347	coro_init (void *args_)
		348	{
		349	struct coro_init_args args = (struct coro_init_args )args_;
		350	coro_func func = args->func;
		351	void *arg = args->arg;
		352
		353	pthread_mutex_lock (&coro_mutex);
		354
		355	/* we try to be good citizens and use deferred cancellation and cleanup handlers */
		356	pthread_cleanup_push (mutex_unlock_wrapper, &coro_mutex);
		357	coro_transfer (args->self, args->main);
		358	func (arg);
		359	pthread_cleanup_pop (1);
		360
		361	return 0;
		362	}
		363
		364	void
		365	coro_transfer (coro_context prev, coro_context next)
		366	{
		367	pthread_cond_signal (&next->cv);
		368	pthread_cond_wait (&prev->cv, &coro_mutex);
		369	#if __FreeBSD__ /* freebsd is of course broken and needs manual testcancel calls... yay... */
		370	pthread_testcancel ();
		371	#endif
		372	}
		373
		374	void
		375	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
		376	{
		377	static coro_context nctx;
		378	static int once;
		379
		380	if (!once)
		381	{
		382	once = 1;
		383
		384	pthread_mutex_lock (&coro_mutex);
		385	pthread_cond_init (&nctx.cv, 0);
		386	null_tid = pthread_self ();
		387	}
		388
		389	pthread_cond_init (&ctx->cv, 0);
		390
		391	if (coro)
		392	{
		393	pthread_attr_t attr;
		394	struct coro_init_args args;
		395
		396	args.func = coro;
		397	args.arg = arg;
		398	args.self = ctx;
		399	args.main = &nctx;
		400
		401	pthread_attr_init (&attr);
		402	pthread_attr_setstack (&attr, sptr, (size_t)ssize);
		403	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		404	pthread_create (&ctx->id, &attr, coro_init, &args);
		405
		406	coro_transfer (args.main, args.self);
		407	}
		408	else
		409	ctx->id = null_tid;
		410	}
		411
		412	void
		413	coro_destroy (coro_context *ctx)
		414	{
		415	if (!pthread_equal (ctx->id, null_tid))
		416	{
		417	pthread_cancel (ctx->id);
		418	pthread_mutex_unlock (&coro_mutex);
		419	pthread_join (ctx->id, 0);
		420	pthread_mutex_lock (&coro_mutex);
		421	}
		422
		423	pthread_cond_destroy (&ctx->cv);
		424	}
		425
253	#else	426	#else
254	#error "microsoft libc or architecture not supported"	427	# error unsupported backend
255	#endif	428	#endif
256		429
257	# elif CORO_LINUX
258
259	_setjmp (ctx->env);
260	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
261	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
262	ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize);
263	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
264	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
265	ctx->env[0].__jmpbuf[0].__sp = (int )((char )sptr + ssize);
266	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
267	ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
268	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize);
269	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
270	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
271	ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize);
272	#else
273	# error "linux libc or architecture not supported"
274	#endif
275
276	# elif CORO_IRIX
277
278	setjmp (ctx->env);
279	ctx->env[JB_PC] = (__uint64_t)coro_init;
280	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
281
282	# elif CORO_ASM
283
284	ctx->sp = (volatile void *)(ssize + (char )sptr);
285	--ctx->sp = (void )coro_init;
286	--ctx->sp = (void )coro_init; // this is needed when the prologue saves ebp
287	ctx->sp -= NUM_CLOBBERED;
288
289	# endif
290
291	coro_transfer ((coro_context )create_coro, (coro_context )new_coro);
292
293	#else
294	# error unsupported architecture
295	#endif
296	}
297

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Comparing libcoro/coro.c (file contents): Revision 1.28 by root, Sun Jan 20 17:30:24 2008 UTC vs. Revision 1.49 by root, Fri Apr 2 19:04:04 2010 UTC

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Comparing libcoro/coro.c (file contents):
Revision 1.28 by root, Sun Jan 20 17:30:24 2008 UTC vs.
Revision 1.49 by root, Fri Apr 2 19:04:04 2010 UTC