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Comparing libcoro/coro.c (file contents):
Revision 1.5 by root, Mon Sep 3 02:50:18 2001 UTC vs.
Revision 1.23 by root, Thu Nov 30 18:21:14 2006 UTC

1/* 1/*
2 * Copyright (c) 2001 Marc Alexander Lehmann <pcg@goof.com> 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,
… …
30 * go to Ralf S. Engelschall <rse@engelschall.com>. 30 * go to Ralf S. Engelschall <rse@engelschall.com>.
31 */ 31 */
32 32
33#include "coro.h" 33#include "coro.h"
34 34
35#if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 35#if !defined(STACK_ADJUST_PTR)
36
37/* IRIX is decidedly NON-unix */ 36/* IRIX is decidedly NON-unix */
38#if __sgi 37# if __sgi
39# define STACK_ADJUST(sp,ss) ((ss) - sizeof (long) + (char *)(sp)) 38# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
40#else 39# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
40# elif __i386__ && CORO_LINUX
41# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
41# define STACK_ADJUST(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)
46# else
47# define STACK_ADJUST_PTR(sp,ss) (sp)
48# define STACK_ADJUST_SIZE(sp,ss) (ss)
42#endif 49# endif
50#endif
43 51
52#if CORO_UCONTEXT
53# include <stddef.h>
54#endif
55
56#if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
57
58#include <stdlib.h>
59
60#if CORO_SJLJ
61# include <stdio.h>
44#include <signal.h> 62# include <signal.h>
63# include <unistd.h>
64#endif
45 65
46static volatile coro_func coro_init_func; 66static volatile coro_func coro_init_func;
47static volatile void *coro_init_arg; 67static volatile void *coro_init_arg;
48static volatile coro_context *new_coro, *create_coro; 68static volatile coro_context *new_coro, *create_coro;
49 69
… …
65 85
66static volatile int trampoline_count; 86static volatile int trampoline_count;
67 87
68/* trampoline signal handler */ 88/* trampoline signal handler */
69static void 89static void
70trampoline(int sig) 90trampoline (int sig)
71{ 91{
72 if (setjmp (((coro_context *)new_coro)->env)) 92 if (setjmp (((coro_context *)new_coro)->env))
73 coro_init (); /* start it */ 93 coro_init (); /* start it */
74 else 94 else
75 trampoline_count++; 95 trampoline_count++;
… …
78# endif 98# endif
79 99
80#endif 100#endif
81 101
82/* initialize a machine state */ 102/* initialize a machine state */
83void coro_create(coro_context *ctx, 103void coro_create (coro_context *ctx,
84 coro_func coro, void *arg, 104 coro_func coro, void *arg,
85 void *sptr, long ssize) 105 void *sptr, long ssize)
86{ 106{
87#if CORO_UCONTEXT 107#if CORO_UCONTEXT
88 108
89 getcontext (&(ctx->uc)); 109 getcontext (&(ctx->uc));
90 110
91 ctx->uc.uc_link = 0; 111 ctx->uc.uc_link = 0;
92 ctx->uc.uc_stack.ss_sp = STACK_ADJUST(sptr,ssize); 112 ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
93 ctx->uc.uc_stack.ss_size = (size_t) ssize; 113 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
94 ctx->uc.uc_stack.ss_flags = 0; 114 ctx->uc.uc_stack.ss_flags = 0;
95 115
96 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); 116 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
97 117
98#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 118#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
99 119
100# if CORO_SJLJ 120# if CORO_SJLJ
101 stack_t ostk, nstk; 121 stack_t ostk, nstk;
102 struct sigaction osa, nsa; 122 struct sigaction osa, nsa;
103 sigset_t nsig, osig; 123 sigset_t nsig, osig;
… …
120 nsa.sa_handler = trampoline; 140 nsa.sa_handler = trampoline;
121 sigemptyset (&nsa.sa_mask); 141 sigemptyset (&nsa.sa_mask);
122 nsa.sa_flags = SA_ONSTACK; 142 nsa.sa_flags = SA_ONSTACK;
123 143
124 if (sigaction (SIGUSR2, &nsa, &osa)) 144 if (sigaction (SIGUSR2, &nsa, &osa))
145 {
125 perror ("sigaction"); 146 perror ("sigaction");
147 abort ();
148 }
126 149
127 /* set the new stack */ 150 /* set the new stack */
128 nstk.ss_sp = STACK_ADJUST(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. */
129 nstk.ss_size = ssize; 152 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
130 nstk.ss_flags = 0; 153 nstk.ss_flags = 0;
131 154
132 if (sigaltstack (&nstk, &ostk) < 0) 155 if (sigaltstack (&nstk, &ostk) < 0)
156 {
133 perror ("sigaltstack"); 157 perror ("sigaltstack");
158 abort ();
159 }
134 160
135 trampoline_count = 0; 161 trampoline_count = 0;
136 kill (getpid (), SIGUSR2); 162 kill (getpid (), SIGUSR2);
137 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); 163 sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
138 164
… …
149 abort (); 175 abort ();
150 176
151 if (~ostk.ss_flags & SS_DISABLE) 177 if (~ostk.ss_flags & SS_DISABLE)
152 sigaltstack (&ostk, 0); 178 sigaltstack (&ostk, 0);
153 179
154 sigaction (SIGUSR1, &osa, 0); 180 sigaction (SIGUSR2, &osa, 0);
155 181
156 sigprocmask (SIG_SETMASK, &osig, 0); 182 sigprocmask (SIG_SETMASK, &osig, 0);
157 183
158# elif CORO_LOOSE 184# elif CORO_LOSER
159 185
160 setjmp (ctx->env); 186 setjmp (ctx->env);
187#if __CYGWIN__
161 ctx->env[7] = (int)((char *)sptr + ssize); 188 ctx->env[7] = (long)((char *)sptr + ssize);
162 ctx->env[8] = (int)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
163 202
164# elif CORO_LINUX 203# elif CORO_LINUX
165 204
166 setjmp (ctx->env); 205 _setjmp (ctx->env);
167#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 206#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
168 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) 207 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP)
169 ctx->env[0].__jmpbuf[JB_PC] = (int)coro_init; 208 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
170 ctx->env[0].__jmpbuf[JB_SP] = (int)((char *)sptr + ssize); 209 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize);
171#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 210#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
172 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) 211 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__)
173 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; 212 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
174 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); 213 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
175#elif defined(__GNU_LIBRARY__) && defined(__i386__) 214#elif defined(__GNU_LIBRARY__) && defined(__i386__)
176 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 215 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
177 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); 216 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
217#elif defined(__GNU_LIBRARY__) && defined(__amd64__)
218 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
219 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize);
178#else 220#else
179#error "linux libc or architecture not supported" 221#error "linux libc or architecture not supported"
180#endif 222#endif
181 223
182# elif CORO_IRIX 224# elif CORO_IRIX
183 225
184 setjmp (ctx->env); 226 setjmp (ctx->env);
185 ctx->env[JB_PC] = (int)coro_init; 227 ctx->env[JB_PC] = (__uint64_t)coro_init;
186 ctx->env[JB_SP] = (int)((char *)sptr + ssize); 228 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr,ssize);
187 229
188# endif 230# endif
189 231
190 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 232 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
191 233

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