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

Comparing libcoro/coro.c (file contents):
Revision 1.29 by root, Sun Mar 2 16:10:22 2008 UTC vs.
Revision 1.59 by root, Mon Jun 13 08:38:16 2011 UTC

…		…
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,
38	* go to Ralf S. Engelschall <rse@engelschall.com>.	38	* go to Ralf S. Engelschall <rse@engelschall.com>.
39	*/	39	*/
40		40
41	#include "coro.h"	41	#include "coro.h"
42		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
43	#if !defined(STACK_ADJUST_PTR)	54	# if !defined(STACK_ADJUST_PTR)
		55	# if __sgi
44	/* IRIX is decidedly NON-unix */	56	/* IRIX is decidedly NON-unix */
45	# if __sgi
46	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	57	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
47	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)	58	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
48	# elif __i386__ && CORO_LINUX	59	# elif (__i386__ && CORO_LINUX) \|\| (_M_IX86 && CORO_LOSER)
49	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))	60	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
50	# define STACK_ADJUST_SIZE(sp,ss) (ss)	61	# define STACK_ADJUST_SIZE(sp,ss) (ss)
51	# elif __amd64__ && CORO_LINUX	62	# elif (__amd64__ && CORO_LINUX) \|\| ((_M_AMD64 \|\| _M_IA64) && CORO_LOSER)
52	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	63	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
53	# define STACK_ADJUST_SIZE(sp,ss) (ss)	64	# define STACK_ADJUST_SIZE(sp,ss) (ss)
54	# else	65	# else
55	# define STACK_ADJUST_PTR(sp,ss) (sp)	66	# define STACK_ADJUST_PTR(sp,ss) (sp)
56	# define STACK_ADJUST_SIZE(sp,ss) (ss)	67	# define STACK_ADJUST_SIZE(sp,ss) (ss)
57	# endif	68	# endif
58	#endif	69	# endif
59		70
60	#if CORO_UCONTEXT
61	# include <stddef.h>
62	#endif
63
64	#if CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
65
66	#include <stdlib.h>	71	# include <stdlib.h>
67		72
68	#if CORO_SJLJ	73	# if CORO_SJLJ
69	# include <stdio.h>	74	# include <stdio.h>
70	# include <signal.h>	75	# include <signal.h>
71	# include <unistd.h>	76	# include <unistd.h>
72	#endif	77	# endif
73		78
74	static volatile coro_func coro_init_func;	79	static coro_func coro_init_func;
75	static volatile void *coro_init_arg;	80	static void *coro_init_arg;
76	static volatile coro_context new_coro, create_coro;	81	static coro_context new_coro, create_coro;
77
78	/* what we really want to detect here is wether we use a new-enough version of GAS */
79	/* instead, check for gcc 3, ELF and GNU/Linux and hope for the best */
80	#if __GNUC__ >= 3 && __ELF__ && __linux__
81	# define HAVE_CFI 1
82	#endif
83		82
84	static void	83	static void
85	coro_init (void)	84	coro_init (void)
86	{	85	{
87	volatile coro_func func = coro_init_func;	86	volatile coro_func func = coro_init_func;
88	volatile void *arg = coro_init_arg;	87	volatile void *arg = coro_init_arg;
89		88
90	coro_transfer ((coro_context )new_coro, (coro_context )create_coro);	89	coro_transfer (new_coro, create_coro);
		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
91		95
92	func ((void *)arg);	96	func ((void *)arg);
93		97
94	/* the new coro returned. bad. just abort() for now */	98	/* the new coro returned. bad. just abort() for now */
95	abort ();	99	abort ();
96	}	100	}
97		101
98	# if CORO_SJLJ	102	# if CORO_SJLJ
99		103
100	static volatile int trampoline_count;	104	static volatile int trampoline_done;
101		105
102	/* trampoline signal handler */	106	/* trampoline signal handler */
103	static void	107	static void
104	trampoline (int sig)	108	trampoline (int sig)
105	{	109	{
106	if (setjmp (((coro_context *)new_coro)->env))	110	if (coro_setjmp (new_coro->env))
107	{
108	#if HAVE_CFI
109	asm (".cfi_startproc");
110	#endif
111	coro_init (); /* start it */	111	coro_init (); /* start it */
112	#if HAVE_CFI
113	asm (".cfi_endproc");
114	#endif
115	}
116	else	112	else
117	trampoline_count++;	113	trampoline_done = 1;
118	}	114	}
119		115
120	# endif
121
122	#endif	116	# endif
123		117
124	#if CORO_ASM	118	# if CORO_ASM
125	void __attribute__((__noinline__, __fastcall__))	119
126	coro_transfer (struct coro_context prev, struct coro_context next)	120	asm (
127	{	121	".text\n"
128	asm volatile (	122	".globl coro_transfer\n"
		123	".type coro_transfer, @function\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 */
129	#if __amd64	127	#if __amd64
130	# define NUM_CLOBBERED 5	128	#ifdef _WIN32
131	"push %%rbx\n\t"	129	/* TODO: xmm6..15 also would need to be saved. sigh. */
132	"push %%r12\n\t"	130	#define NUM_SAVED 8
133	"push %%r13\n\t"	131	#undef CORO_WIN_TIB
134	"push %%r14\n\t"	132	"\tpushq %rsi\n"
135	"push %%r15\n\t"	133	"\tpushq %rdi\n"
136	"mov %%rsp, %0\n\t"	134	"\tpushq %rbp\n"
137	"mov %1, %%rsp\n\t"	135	"\tpushq %rbx\n"
138	"pop %%r15\n\t"	136	"\tpushq %r12\n"
139	"pop %%r14\n\t"	137	"\tpushq %r13\n"
140	"pop %%r13\n\t"	138	"\tpushq %r14\n"
141	"pop %%r12\n\t"	139	"\tpushq %r15\n"
142	"pop %%rbx\n\t"	140	"\tmovq %rsp, (%rcx)\n"
		141	"\tmovq (%rdx), %rsp\n"
		142	"\tpopq %r15\n"
		143	"\tpopq %r14\n"
		144	"\tpopq %r13\n"
		145	"\tpopq %r12\n"
		146	"\tpopq %rbx\n"
		147	"\tpopq %rbp\n"
		148	"\tpopq %rdi\n"
		149	"\tpopq %rsi\n"
		150	#else
		151	#define NUM_SAVED 6
		152	"\tpushq %rbp\n"
		153	"\tpushq %rbx\n"
		154	"\tpushq %r12\n"
		155	"\tpushq %r13\n"
		156	"\tpushq %r14\n"
		157	"\tpushq %r15\n"
		158	"\tmovq %rsp, (%rdi)\n"
		159	"\tmovq (%rsi), %rsp\n"
		160	"\tpopq %r15\n"
		161	"\tpopq %r14\n"
		162	"\tpopq %r13\n"
		163	"\tpopq %r12\n"
		164	"\tpopq %rbx\n"
		165	"\tpopq %rbp\n"
		166	#endif
143	#elif __i386	167	#elif __i386
144	# define NUM_CLOBBERED 4	168	#define NUM_SAVED 4
145	"push %%ebx\n\t"	169	"\tpushl %ebp\n"
146	"push %%esi\n\t"	170	"\tpushl %ebx\n"
147	"push %%edi\n\t"	171	"\tpushl %esi\n"
148	"push %%ebp\n\t"	172	"\tpushl %edi\n"
149	"mov %%esp, %0\n\t"	173	#if CORO_WIN_TIB
150	"mov %1, %%esp\n\t"	174	"\tpushl %fs:0\n"
151	"pop %%ebp\n\t"	175	"\tpushl %fs:4\n"
152	"pop %%edi\n\t"	176	"\tpushl %fs:8\n"
153	"pop %%esi\n\t"	177	#endif
154	"pop %%ebx\n\t"	178	"\tmovl %esp, (%eax)\n"
155	#else	179	"\tmovl (%edx), %esp\n"
		180	#if CORO_WIN_TIB
		181	"\tpopl %fs:8\n"
		182	"\tpopl %fs:4\n"
		183	"\tpopl %fs:0\n"
		184	#endif
		185	"\tpopl %edi\n"
		186	"\tpopl %esi\n"
		187	"\tpopl %ebx\n"
		188	"\tpopl %ebp\n"
		189	#else
156	# error unsupported architecture	190	#error unsupported architecture
157	#endif	191	#endif
158	: "=m" (prev->sp)	192	"\tret\n"
159	: "m" (next->sp)
160	);	193	);
161	}	194
162	#endif	195	# endif
163		196
164	/* initialize a machine state */	197	void
165	void coro_create (coro_context *ctx,	198	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
166	coro_func coro, void *arg,
167	void *sptr, long ssize)
168	{	199	{
169	#if CORO_UCONTEXT	200	coro_context nctx;
170
171	getcontext (&(ctx->uc));
172
173	ctx->uc.uc_link = 0;
174	ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
175	ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
176	ctx->uc.uc_stack.ss_flags = 0;
177
178	makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
179
180	#elif CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
181
182	# if CORO_SJLJ	201	# if CORO_SJLJ
183	stack_t ostk, nstk;	202	stack_t ostk, nstk;
184	struct sigaction osa, nsa;	203	struct sigaction osa, nsa;
185	sigset_t nsig, osig;	204	sigset_t nsig, osig;
186	# endif	205	# endif
187	coro_context nctx;	206
		207	if (!coro)
		208	return;
188		209
189	coro_init_func = coro;	210	coro_init_func = coro;
190	coro_init_arg = arg;	211	coro_init_arg = arg;
191		212
192	new_coro = ctx;	213	new_coro = ctx;
…		…
208	perror ("sigaction");	229	perror ("sigaction");
209	abort ();	230	abort ();
210	}	231	}
211		232
212	/* set the new stack */	233	/* set the new stack */
213	nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */	234	nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */
214	nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);	235	nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize);
215	nstk.ss_flags = 0;	236	nstk.ss_flags = 0;
216		237
217	if (sigaltstack (&nstk, &ostk) < 0)	238	if (sigaltstack (&nstk, &ostk) < 0)
218	{	239	{
219	perror ("sigaltstack");	240	perror ("sigaltstack");
220	abort ();	241	abort ();
221	}	242	}
222		243
223	trampoline_count = 0;	244	trampoline_done = 0;
224	kill (getpid (), SIGUSR2);	245	kill (getpid (), SIGUSR2);
225	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);	246	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
226		247
227	while (!trampoline_count)	248	while (!trampoline_done)
228	sigsuspend (&nsig);	249	sigsuspend (&nsig);
229		250
230	sigaltstack (0, &nstk);	251	sigaltstack (0, &nstk);
231	nstk.ss_flags = SS_DISABLE;	252	nstk.ss_flags = SS_DISABLE;
232	if (sigaltstack (&nstk, 0) < 0)	253	if (sigaltstack (&nstk, 0) < 0)
…		…
238		259
239	if (~ostk.ss_flags & SS_DISABLE)	260	if (~ostk.ss_flags & SS_DISABLE)
240	sigaltstack (&ostk, 0);	261	sigaltstack (&ostk, 0);
241		262
242	sigaction (SIGUSR2, &osa, 0);	263	sigaction (SIGUSR2, &osa, 0);
243
244	sigprocmask (SIG_SETMASK, &osig, 0);	264	sigprocmask (SIG_SETMASK, &osig, 0);
245		265
246	# elif CORO_LOSER	266	# elif CORO_LOSER
247		267
248	setjmp (ctx->env);	268	coro_setjmp (ctx->env);
249	#if __CYGWIN__	269	#if __CYGWIN__ && __i386
250	ctx->env[7] = (long)((char *)sptr + ssize);	270	ctx->env[8] = (long) coro_init;
251	ctx->env[8] = (long)coro_init;	271	ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long);
		272	#elif __CYGWIN__ && __x86_64
		273	ctx->env[7] = (long) coro_init;
		274	ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long);
		275	#elif defined(__MINGW32__)
		276	ctx->env[5] = (long) coro_init;
		277	ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long);
252	#elif defined(_M_IX86)	278	#elif defined(_M_IX86)
253	((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;	279	((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init;
254	((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize);	280	((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
255	#elif defined(_M_AMD64)	281	#elif defined(_M_AMD64)
256	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;	282	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init;
257	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize);	283	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
258	#elif defined(_M_IA64)	284	#elif defined(_M_IA64)
259	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;	285	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init;
260	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize);	286	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
		287	#else
		288	#error "microsoft libc or architecture not supported"
		289	#endif
		290
		291	# elif CORO_LINUX
		292
		293	coro_setjmp (ctx->env);
		294	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
		295	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
		296	ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		297	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
		298	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
		299	ctx->env[0].__jmpbuf[0].__sp = (int ) ((char )sptr + ssize) - sizeof (long);
		300	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
		301	ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init;
		302	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
		303	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
		304	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
		305	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
		306	#else
		307	#error "linux libc or architecture not supported"
		308	#endif
		309
		310	# elif CORO_IRIX
		311
		312	coro_setjmp (ctx->env, 0);
		313	ctx->env[JB_PC] = (__uint64_t)coro_init;
		314	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		315
		316	# elif CORO_ASM
		317
		318	ctx->sp = (void *)(ssize + (char )sptr);
		319	--ctx->sp = (void )abort; /* needed for alignment only */
		320	--ctx->sp = (void )coro_init;
		321
		322	#if CORO_WIN_TIB
		323	--ctx->sp = 0; / ExceptionList */
		324	--ctx->sp = (char )sptr + ssize; /* StackBase */
		325	--ctx->sp = sptr; / StackLimit */
		326	#endif
		327
		328	ctx->sp -= NUM_SAVED;
		329	memset (ctx->sp, 0, sizeof (ctx->sp) NUM_SAVED);
		330
		331	# elif CORO_UCONTEXT
		332
		333	getcontext (&(ctx->uc));
		334
		335	ctx->uc.uc_link = 0;
		336	ctx->uc.uc_stack.ss_sp = sptr;
		337	ctx->uc.uc_stack.ss_size = (size_t)ssize;
		338	ctx->uc.uc_stack.ss_flags = 0;
		339
		340	makecontext (&(ctx->uc), (void (*)())coro_init, 0);
		341
		342	# endif
		343
		344	coro_transfer (create_coro, new_coro);
		345	}
		346
		347	/*****************************************************************************/
		348	/* pthread backend */
		349	/*****************************************************************************/
		350	#elif CORO_PTHREAD
		351
		352	/* this mutex will be locked by the running coroutine */
		353	pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;
		354
		355	struct coro_init_args
		356	{
		357	coro_func func;
		358	void *arg;
		359	coro_context self, main;
		360	};
		361
		362	static pthread_t null_tid;
		363
		364	/* I'd so love to cast pthread_mutex_unlock to void ()(void )... */
		365	static void
		366	mutex_unlock_wrapper (void *arg)
		367	{
		368	pthread_mutex_unlock ((pthread_mutex_t *)arg);
		369	}
		370
		371	static void *
		372	coro_init (void *args_)
		373	{
		374	struct coro_init_args args = (struct coro_init_args )args_;
		375	coro_func func = args->func;
		376	void *arg = args->arg;
		377
		378	pthread_mutex_lock (&coro_mutex);
		379
		380	/* we try to be good citizens and use deferred cancellation and cleanup handlers */
		381	pthread_cleanup_push (mutex_unlock_wrapper, &coro_mutex);
		382	coro_transfer (args->self, args->main);
		383	func (arg);
		384	pthread_cleanup_pop (1);
		385
		386	return 0;
		387	}
		388
		389	void
		390	coro_transfer (coro_context prev, coro_context next)
		391	{
		392	pthread_cond_signal (&next->cv);
		393	pthread_cond_wait (&prev->cv, &coro_mutex);
		394	#if __FreeBSD__ /* freebsd is of course broken and needs manual testcancel calls... yay... */
		395	pthread_testcancel ();
		396	#endif
		397	}
		398
		399	void
		400	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
		401	{
		402	static coro_context nctx;
		403	static int once;
		404
		405	if (!once)
		406	{
		407	once = 1;
		408
		409	pthread_mutex_lock (&coro_mutex);
		410	pthread_cond_init (&nctx.cv, 0);
		411	null_tid = pthread_self ();
		412	}
		413
		414	pthread_cond_init (&ctx->cv, 0);
		415
		416	if (coro)
		417	{
		418	pthread_attr_t attr;
		419	struct coro_init_args args;
		420
		421	args.func = coro;
		422	args.arg = arg;
		423	args.self = ctx;
		424	args.main = &nctx;
		425
		426	pthread_attr_init (&attr);
		427	#if __UCLIBC__
		428	/* exists, but is borked */
		429	/pthread_attr_setstacksize (&attr, (size_t)ssize);/
261	#else	430	#else
262	#error "microsoft libc or architecture not supported"	431	pthread_attr_setstack (&attr, sptr, (size_t)ssize);
263	#endif	432	#endif
		433	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		434	pthread_create (&ctx->id, &attr, coro_init, &args);
264		435
265	# elif CORO_LINUX	436	coro_transfer (args.main, args.self);
		437	}
		438	else
		439	ctx->id = null_tid;
		440	}
266		441
267	_setjmp (ctx->env);	442	void
268	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)	443	coro_destroy (coro_context *ctx)
269	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;	444	{
270	ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize);	445	if (!pthread_equal (ctx->id, null_tid))
271	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)	446	{
272	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;	447	pthread_cancel (ctx->id);
273	ctx->env[0].__jmpbuf[0].__sp = (int )((char )sptr + ssize);	448	pthread_mutex_unlock (&coro_mutex);
274	#elif defined (__GNU_LIBRARY__) && defined (__i386__)	449	pthread_join (ctx->id, 0);
275	ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;	450	pthread_mutex_lock (&coro_mutex);
276	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize);	451	}
277	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)	452
278	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;	453	pthread_cond_destroy (&ctx->cv);
279	ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize);	454	}
		455
280	#else	456	#else
281	# error "linux libc or architecture not supported"	457	# error unsupported backend
282	#endif	458	#endif
283		459
284	# elif CORO_IRIX
285
286	setjmp (ctx->env);
287	ctx->env[JB_PC] = (__uint64_t)coro_init;
288	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
289
290	# elif CORO_ASM
291
292	ctx->sp = (volatile void *)(ssize + (char )sptr);
293	--ctx->sp = (void )coro_init;
294	--ctx->sp = (void )coro_init; // this is needed when the prologue saves ebp
295	ctx->sp -= NUM_CLOBBERED;
296
297	# endif
298
299	coro_transfer ((coro_context )create_coro, (coro_context )new_coro);
300
301	#else
302	# error unsupported architecture
303	#endif
304	}
305

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Comparing libcoro/coro.c (file contents): Revision 1.29 by root, Sun Mar 2 16:10:22 2008 UTC vs. Revision 1.59 by root, Mon Jun 13 08:38:16 2011 UTC

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Comparing libcoro/coro.c (file contents):
Revision 1.29 by root, Sun Mar 2 16:10:22 2008 UTC vs.
Revision 1.59 by root, Mon Jun 13 08:38:16 2011 UTC