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Comparing libcoro/coro.c (file contents):
Revision 1.13 by root, Thu Mar 3 17:20:31 2005 UTC vs.
Revision 1.24 by root, Mon Feb 12 15:56:46 2007 UTC

1/* 1/*
2 * Copyright (c) 2001-2005 Marc Alexander Lehmann <schmorp@schmorp.de> 2 * Copyright (c) 2001-2006 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# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) 38# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
39# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) 39# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
40# elif __i386__ && CORO_LINUX 40# elif __i386__ && CORO_LINUX
41# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) 41# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
42# define STACK_ADJUST_SIZE(sp,ss) (ss) 42# define STACK_ADJUST_SIZE(sp,ss) (ss)
43# elif __amd64__ && CORO_LINUX
44# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
45# define STACK_ADJUST_SIZE(sp,ss) (ss)
43# else 46# else
44# define STACK_ADJUST_PTR(sp,ss) (sp) 47# define STACK_ADJUST_PTR(sp,ss) (sp)
45# define STACK_ADJUST_SIZE(sp,ss) (ss) 48# define STACK_ADJUST_SIZE(sp,ss) (ss)
46# endif 49# endif
47#endif 50#endif
48 51
52#if CORO_UCONTEXT
53# include <stddef.h>
54#endif
55
49#if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 56#if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
50 57
58#include <stdlib.h>
59
60#if CORO_SJLJ
61# include <stdio.h>
51#include <signal.h> 62# include <signal.h>
63# include <unistd.h>
64#endif
52 65
53static volatile coro_func coro_init_func; 66static volatile coro_func coro_init_func;
54static volatile void *coro_init_arg; 67static volatile void *coro_init_arg;
55static volatile coro_context *new_coro, *create_coro; 68static volatile coro_context *new_coro, *create_coro;
56 69
… …
72 85
73static volatile int trampoline_count; 86static volatile int trampoline_count;
74 87
75/* trampoline signal handler */ 88/* trampoline signal handler */
76static void 89static void
77trampoline(int sig) 90trampoline (int sig)
78{ 91{
79 if (setjmp (((coro_context *)new_coro)->env)) 92 if (setjmp (((coro_context *)new_coro)->env))
80 coro_init (); /* start it */ 93 coro_init (); /* start it */
81 else 94 else
82 trampoline_count++; 95 trampoline_count++;
… …
85# endif 98# endif
86 99
87#endif 100#endif
88 101
89/* initialize a machine state */ 102/* initialize a machine state */
90void coro_create(coro_context *ctx, 103void coro_create (coro_context *ctx,
91 coro_func coro, void *arg, 104 coro_func coro, void *arg,
92 void *sptr, long ssize) 105 void *sptr, long ssize)
93{ 106{
94#if CORO_UCONTEXT 107#if CORO_UCONTEXT
95 108
96 getcontext (&(ctx->uc)); 109 getcontext (&(ctx->uc));
97 110
… …
100 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize); 113 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
101 ctx->uc.uc_stack.ss_flags = 0; 114 ctx->uc.uc_stack.ss_flags = 0;
102 115
103 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); 116 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
104 117
105#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 118#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
106 119
107# if CORO_SJLJ 120# if CORO_SJLJ
108 stack_t ostk, nstk; 121 stack_t ostk, nstk;
109 struct sigaction osa, nsa; 122 struct sigaction osa, nsa;
110 sigset_t nsig, osig; 123 sigset_t nsig, osig;
… …
127 nsa.sa_handler = trampoline; 140 nsa.sa_handler = trampoline;
128 sigemptyset (&nsa.sa_mask); 141 sigemptyset (&nsa.sa_mask);
129 nsa.sa_flags = SA_ONSTACK; 142 nsa.sa_flags = SA_ONSTACK;
130 143
131 if (sigaction (SIGUSR2, &nsa, &osa)) 144 if (sigaction (SIGUSR2, &nsa, &osa))
145 {
132 perror ("sigaction"); 146 perror ("sigaction");
147 abort ();
148 }
133 149
134 /* set the new stack */ 150 /* set the new stack */
135 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 151 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
136 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); 152 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
137 nstk.ss_flags = 0; 153 nstk.ss_flags = 0;
138 154
139 if (sigaltstack (&nstk, &ostk) < 0) 155 if (sigaltstack (&nstk, &ostk) < 0)
156 {
140 perror ("sigaltstack"); 157 perror ("sigaltstack");
158 abort ();
159 }
141 160
142 trampoline_count = 0; 161 trampoline_count = 0;
143 kill (getpid (), SIGUSR2); 162 kill (getpid (), SIGUSR2);
144 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); 163 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
145 164
… …
156 abort (); 175 abort ();
157 176
158 if (~ostk.ss_flags & SS_DISABLE) 177 if (~ostk.ss_flags & SS_DISABLE)
159 sigaltstack (&ostk, 0); 178 sigaltstack (&ostk, 0);
160 179
161 sigaction (SIGUSR1, &osa, 0); 180 sigaction (SIGUSR2, &osa, 0);
162 181
163 sigprocmask (SIG_SETMASK, &osig, 0); 182 sigprocmask (SIG_SETMASK, &osig, 0);
164 183
165# elif CORO_LOOSE 184# elif CORO_LOSER
166 185
167 setjmp (ctx->env); 186 setjmp (ctx->env);
187#if __CYGWIN__
168 ctx->env[7] = (long)((char *)sptr + ssize); 188 ctx->env[7] = (long)((char *)sptr + ssize);
169 ctx->env[8] = (long)coro_init; 189 ctx->env[8] = (long)coro_init;
190#elif defined(_M_IX86)
191 ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
192 ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize);
193#elif defined(_M_AMD64)
194 ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
195 ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize);
196#elif defined(_M_IA64)
197 ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
198 ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize);
199#else
200#error "microsoft libc or architecture not supported"
201#endif
170 202
171# elif CORO_LINUX 203# elif CORO_LINUX
172 204
173 setjmp (ctx->env); 205 _setjmp (ctx->env);
174#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
175 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) 206#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
176 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; 207 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
177 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize); 208 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize);
178#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
179 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) 209#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
180 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; 210 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
181 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); 211 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
182#elif defined(__GNU_LIBRARY__) && defined(__i386__) 212#elif defined (__GNU_LIBRARY__) && defined (__i386__)
183 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 213 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
184 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); 214 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
185#elif defined(__GNU_LIBRARY__) && defined(__amd64__) 215#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
186 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; 216 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
187 ctx->env[0].__jmpbuf[JB_RSP] = (long)((char *)sptr + ssize); 217 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize);
188#else 218#else
189#error "linux libc or architecture not supported" 219#error "linux libc or architecture not supported"
190#endif 220#endif
191 221
192# elif CORO_IRIX 222# elif CORO_IRIX
193 223
194 setjmp (ctx->env); 224 setjmp (ctx->env);
195 ctx->env[JB_PC] = (__uint64_t)coro_init; 225 ctx->env[JB_PC] = (__uint64_t)coro_init;
196 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr,ssize); 226 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
197 227
198# endif 228# endif
199 229
200 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 230 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
201 231

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