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/cvs/libcoro/coro.c
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Comparing libcoro/coro.c (file contents):
Revision 1.8 by root, Sun Sep 16 01:34:36 2001 UTC vs.
Revision 1.19 by root, Wed Oct 19 19:04:24 2005 UTC

1/* 1/*
2 * Copyright (c) 2001 Marc Alexander Lehmann <pcg@goof.com> 2 * Copyright (c) 2001-2005 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
49#if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 52#if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
50 53
54#include <stdlib.h>
55
56#if CORO_SJLJ
57# include <stdio.h>
51#include <signal.h> 58# include <signal.h>
59# include <unistd.h>
60#endif
52 61
53static volatile coro_func coro_init_func; 62static volatile coro_func coro_init_func;
54static volatile void *coro_init_arg; 63static volatile void *coro_init_arg;
55static volatile coro_context *new_coro, *create_coro; 64static volatile coro_context *new_coro, *create_coro;
56 65
… …
72 81
73static volatile int trampoline_count; 82static volatile int trampoline_count;
74 83
75/* trampoline signal handler */ 84/* trampoline signal handler */
76static void 85static void
77trampoline(int sig) 86trampoline (int sig)
78{ 87{
79 if (setjmp (((coro_context *)new_coro)->env)) 88 if (setjmp (((coro_context *)new_coro)->env))
80 coro_init (); /* start it */ 89 coro_init (); /* start it */
81 else 90 else
82 trampoline_count++; 91 trampoline_count++;
… …
94#if CORO_UCONTEXT 103#if CORO_UCONTEXT
95 104
96 getcontext (&(ctx->uc)); 105 getcontext (&(ctx->uc));
97 106
98 ctx->uc.uc_link = 0; 107 ctx->uc.uc_link = 0;
99 ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR(sptr,ssize); 108 ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
100 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize); 109 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
101 ctx->uc.uc_stack.ss_flags = 0; 110 ctx->uc.uc_stack.ss_flags = 0;
102 111
103 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); 112 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
104 113
105#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 114#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
106 115
107# if CORO_SJLJ 116# if CORO_SJLJ
108 stack_t ostk, nstk; 117 stack_t ostk, nstk;
109 struct sigaction osa, nsa; 118 struct sigaction osa, nsa;
110 sigset_t nsig, osig; 119 sigset_t nsig, osig;
… …
130 139
131 if (sigaction (SIGUSR2, &nsa, &osa)) 140 if (sigaction (SIGUSR2, &nsa, &osa))
132 perror ("sigaction"); 141 perror ("sigaction");
133 142
134 /* set the new stack */ 143 /* set the new stack */
135 nstk.ss_sp = STACK_ADJUST(sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 144 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
136 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); 145 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
137 nstk.ss_flags = 0; 146 nstk.ss_flags = 0;
138 147
139 if (sigaltstack (&nstk, &ostk) < 0) 148 if (sigaltstack (&nstk, &ostk) < 0)
140 perror ("sigaltstack"); 149 perror ("sigaltstack");
… …
156 abort (); 165 abort ();
157 166
158 if (~ostk.ss_flags & SS_DISABLE) 167 if (~ostk.ss_flags & SS_DISABLE)
159 sigaltstack (&ostk, 0); 168 sigaltstack (&ostk, 0);
160 169
161 sigaction (SIGUSR1, &osa, 0); 170 sigaction (SIGUSR2, &osa, 0);
162 171
163 sigprocmask (SIG_SETMASK, &osig, 0); 172 sigprocmask (SIG_SETMASK, &osig, 0);
164 173
165# elif CORO_LOOSE 174# elif CORO_LOSER
166 175
167 setjmp (ctx->env); 176 setjmp (ctx->env);
168 ctx->env[7] = (int)((char *)sptr + ssize); 177 ctx->env[7] = (long)((char *)sptr + ssize);
169 ctx->env[8] = (int)coro_init; 178 ctx->env[8] = (long)coro_init;
170 179
171# elif CORO_LINUX 180# elif CORO_LINUX
172 181
173 setjmp (ctx->env); 182 setjmp (ctx->env);
174#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 183#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
175 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) 184 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP)
176 ctx->env[0].__jmpbuf[JB_PC] = (int)coro_init; 185 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
177 ctx->env[0].__jmpbuf[JB_SP] = (int)STACK_ADJUST_PTR(sptr,ssize); 186 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize);
178#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 187#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
179 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) 188 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__)
180 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; 189 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
181 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); 190 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
182#elif defined(__GNU_LIBRARY__) && defined(__i386__) 191#elif defined(__GNU_LIBRARY__) && defined(__i386__)
183 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 192 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
184 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); 193 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
194#elif defined(__GNU_LIBRARY__) && defined(__amd64__)
195 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
196 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize);
185#else 197#else
186#error "linux libc or architecture not supported" 198#error "linux libc or architecture not supported"
187#endif 199#endif
188 200
189# elif CORO_IRIX 201# elif CORO_IRIX
190 202
191 setjmp (ctx->env); 203 setjmp (ctx->env);
192 ctx->env[JB_PC] = (__uint64_t)coro_init; 204 ctx->env[JB_PC] = (__uint64_t)coro_init;
193 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR(sptr,ssize); 205 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr,ssize);
194 206
195# endif 207# endif
196 208
197 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 209 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
198 210

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