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Comparing libcoro/coro.c (file contents):
Revision 1.19 by root, Wed Oct 19 19:04:24 2005 UTC vs.
Revision 1.25 by root, Fri Apr 27 19:26:18 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,
… …
47# define STACK_ADJUST_PTR(sp,ss) (sp) 47# define STACK_ADJUST_PTR(sp,ss) (sp)
48# define STACK_ADJUST_SIZE(sp,ss) (ss) 48# define STACK_ADJUST_SIZE(sp,ss) (ss)
49# endif 49# endif
50#endif 50#endif
51 51
52#if CORO_UCONTEXT
53# include <stddef.h>
54#endif
55
52#if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX 56#if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
53 57
54#include <stdlib.h> 58#include <stdlib.h>
55 59
56#if CORO_SJLJ 60#if CORO_SJLJ
… …
60#endif 64#endif
61 65
62static volatile coro_func coro_init_func; 66static volatile coro_func coro_init_func;
63static volatile void *coro_init_arg; 67static volatile void *coro_init_arg;
64static volatile coro_context *new_coro, *create_coro; 68static volatile 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 and ELF and hope for the best */
72#if __GNUC__ >= 3 && __ELF__
73# define HAVE_CFI 1
74#endif
65 75
66static void 76static void
67coro_init (void) 77coro_init (void)
68{ 78{
69 volatile coro_func func = coro_init_func; 79 volatile coro_func func = coro_init_func;
70 volatile void *arg = coro_init_arg; 80 volatile void *arg = coro_init_arg;
71 81
72 coro_transfer ((coro_context *)new_coro, (coro_context *)create_coro); 82 coro_transfer ((coro_context *)new_coro, (coro_context *)create_coro);
73 83
84#if HAVE_CFI
85 asm (".cfi_startproc");
86#endif
74 func ((void *)arg); 87 func ((void *)arg);
88#if HAVE_CFI
89 asm (".cfi_endproc");
90#endif
75 91
76 /* the new coro returned. bad. just abort() for now */ 92 /* the new coro returned. bad. just abort() for now */
77 abort (); 93 abort ();
78} 94}
79 95
… …
94# endif 110# endif
95 111
96#endif 112#endif
97 113
98/* initialize a machine state */ 114/* initialize a machine state */
99void coro_create(coro_context *ctx, 115void coro_create (coro_context *ctx,
100 coro_func coro, void *arg, 116 coro_func coro, void *arg,
101 void *sptr, long ssize) 117 void *sptr, long ssize)
102{ 118{
103#if CORO_UCONTEXT 119#if CORO_UCONTEXT
104 120
105 getcontext (&(ctx->uc)); 121 getcontext (&(ctx->uc));
106 122
… …
136 nsa.sa_handler = trampoline; 152 nsa.sa_handler = trampoline;
137 sigemptyset (&nsa.sa_mask); 153 sigemptyset (&nsa.sa_mask);
138 nsa.sa_flags = SA_ONSTACK; 154 nsa.sa_flags = SA_ONSTACK;
139 155
140 if (sigaction (SIGUSR2, &nsa, &osa)) 156 if (sigaction (SIGUSR2, &nsa, &osa))
157 {
141 perror ("sigaction"); 158 perror ("sigaction");
159 abort ();
160 }
142 161
143 /* set the new stack */ 162 /* set the new stack */
144 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 163 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
145 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); 164 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
146 nstk.ss_flags = 0; 165 nstk.ss_flags = 0;
147 166
148 if (sigaltstack (&nstk, &ostk) < 0) 167 if (sigaltstack (&nstk, &ostk) < 0)
168 {
149 perror ("sigaltstack"); 169 perror ("sigaltstack");
170 abort ();
171 }
150 172
151 trampoline_count = 0; 173 trampoline_count = 0;
152 kill (getpid (), SIGUSR2); 174 kill (getpid (), SIGUSR2);
153 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); 175 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
154 176
… …
172 sigprocmask (SIG_SETMASK, &osig, 0); 194 sigprocmask (SIG_SETMASK, &osig, 0);
173 195
174# elif CORO_LOSER 196# elif CORO_LOSER
175 197
176 setjmp (ctx->env); 198 setjmp (ctx->env);
199#if __CYGWIN__
177 ctx->env[7] = (long)((char *)sptr + ssize); 200 ctx->env[7] = (long)((char *)sptr + ssize);
178 ctx->env[8] = (long)coro_init; 201 ctx->env[8] = (long)coro_init;
202#elif defined(_M_IX86)
203 ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
204 ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize);
205#elif defined(_M_AMD64)
206 ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
207 ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize);
208#elif defined(_M_IA64)
209 ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
210 ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize);
211#else
212#error "microsoft libc or architecture not supported"
213#endif
179 214
180# elif CORO_LINUX 215# elif CORO_LINUX
181 216
182 setjmp (ctx->env); 217 _setjmp (ctx->env);
183#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
184 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) 218#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
185 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; 219 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
186 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize); 220 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize);
187#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
188 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) 221#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
189 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; 222 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
190 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); 223 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
191#elif defined(__GNU_LIBRARY__) && defined(__i386__) 224#elif defined (__GNU_LIBRARY__) && defined (__i386__)
192 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 225 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
193 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); 226 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
194#elif defined(__GNU_LIBRARY__) && defined(__amd64__) 227#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
195 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; 228 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
196 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize); 229 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize);
197#else 230#else
198#error "linux libc or architecture not supported" 231#error "linux libc or architecture not supported"
199#endif 232#endif
200 233
201# elif CORO_IRIX 234# elif CORO_IRIX
202 235
203 setjmp (ctx->env); 236 setjmp (ctx->env);
204 ctx->env[JB_PC] = (__uint64_t)coro_init; 237 ctx->env[JB_PC] = (__uint64_t)coro_init;
205 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr,ssize); 238 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
206 239
207# endif 240# endif
208 241
209 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 242 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
210 243

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