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Comparing libcoro/coro.c (file contents):
Revision 1.7 by root, Mon Sep 3 03:42:13 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,
… …
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 !defined(STACK_ADJUST_PTR)
35/* IRIX is decidedly NON-unix */ 36/* IRIX is decidedly NON-unix */
36#if __sgi 37# if __sgi
37# define STACK_ADJUST(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)
40# elif __i386__ && CORO_LINUX
41# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (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)
38#else 46# else
39# define STACK_ADJUST(sp,ss) (sp) 47# define STACK_ADJUST_PTR(sp,ss) (sp)
48# define STACK_ADJUST_SIZE(sp,ss) (ss)
40#endif 49# endif
50#endif
41 51
42#if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 52#if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
43 53
54#include <stdlib.h>
55
56#if CORO_SJLJ
57# include <stdio.h>
44#include <signal.h> 58# include <signal.h>
59# include <unistd.h>
60#endif
45 61
46static volatile coro_func coro_init_func; 62static volatile coro_func coro_init_func;
47static volatile void *coro_init_arg; 63static volatile void *coro_init_arg;
48static volatile coro_context *new_coro, *create_coro; 64static volatile coro_context *new_coro, *create_coro;
49 65
… …
65 81
66static volatile int trampoline_count; 82static volatile int trampoline_count;
67 83
68/* trampoline signal handler */ 84/* trampoline signal handler */
69static void 85static void
70trampoline(int sig) 86trampoline (int sig)
71{ 87{
72 if (setjmp (((coro_context *)new_coro)->env)) 88 if (setjmp (((coro_context *)new_coro)->env))
73 coro_init (); /* start it */ 89 coro_init (); /* start it */
74 else 90 else
75 trampoline_count++; 91 trampoline_count++;
… …
87#if CORO_UCONTEXT 103#if CORO_UCONTEXT
88 104
89 getcontext (&(ctx->uc)); 105 getcontext (&(ctx->uc));
90 106
91 ctx->uc.uc_link = 0; 107 ctx->uc.uc_link = 0;
92 ctx->uc.uc_stack.ss_sp = STACK_ADJUST(sptr,ssize); 108 ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
93 ctx->uc.uc_stack.ss_size = (size_t) ssize; 109 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
94 ctx->uc.uc_stack.ss_flags = 0; 110 ctx->uc.uc_stack.ss_flags = 0;
95 111
96 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); 112 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
97 113
98#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 114#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
99 115
100# if CORO_SJLJ 116# if CORO_SJLJ
101 stack_t ostk, nstk; 117 stack_t ostk, nstk;
102 struct sigaction osa, nsa; 118 struct sigaction osa, nsa;
103 sigset_t nsig, osig; 119 sigset_t nsig, osig;
… …
123 139
124 if (sigaction (SIGUSR2, &nsa, &osa)) 140 if (sigaction (SIGUSR2, &nsa, &osa))
125 perror ("sigaction"); 141 perror ("sigaction");
126 142
127 /* set the new stack */ 143 /* set the new stack */
128 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. */
129 nstk.ss_size = ssize; 145 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
130 nstk.ss_flags = 0; 146 nstk.ss_flags = 0;
131 147
132 if (sigaltstack (&nstk, &ostk) < 0) 148 if (sigaltstack (&nstk, &ostk) < 0)
133 perror ("sigaltstack"); 149 perror ("sigaltstack");
134 150
… …
149 abort (); 165 abort ();
150 166
151 if (~ostk.ss_flags & SS_DISABLE) 167 if (~ostk.ss_flags & SS_DISABLE)
152 sigaltstack (&ostk, 0); 168 sigaltstack (&ostk, 0);
153 169
154 sigaction (SIGUSR1, &osa, 0); 170 sigaction (SIGUSR2, &osa, 0);
155 171
156 sigprocmask (SIG_SETMASK, &osig, 0); 172 sigprocmask (SIG_SETMASK, &osig, 0);
157 173
158# elif CORO_LOOSE 174# elif CORO_LOSER
159 175
160 setjmp (ctx->env); 176 setjmp (ctx->env);
161 ctx->env[7] = (int)((char *)sptr + ssize); 177 ctx->env[7] = (long)((char *)sptr + ssize);
162 ctx->env[8] = (int)coro_init; 178 ctx->env[8] = (long)coro_init;
163 179
164# elif CORO_LINUX 180# elif CORO_LINUX
165 181
166 setjmp (ctx->env); 182 setjmp (ctx->env);
167#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 183#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
168 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) 184 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP)
169 ctx->env[0].__jmpbuf[JB_PC] = (int)coro_init; 185 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
170 ctx->env[0].__jmpbuf[JB_SP] = (int)((char *)sptr + ssize); 186 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize);
171#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 187#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
172 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) 188 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__)
173 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; 189 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
174 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); 190 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
175#elif defined(__GNU_LIBRARY__) && defined(__i386__) 191#elif defined(__GNU_LIBRARY__) && defined(__i386__)
176 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 192 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
177 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);
178#else 197#else
179#error "linux libc or architecture not supported" 198#error "linux libc or architecture not supported"
180#endif 199#endif
181 200
182# elif CORO_IRIX 201# elif CORO_IRIX
183 202
184 setjmp (ctx->env); 203 setjmp (ctx->env);
185 ctx->env[JB_PC] = (__uint64_t)coro_init; 204 ctx->env[JB_PC] = (__uint64_t)coro_init;
186 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST(sptr,ssize); 205 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr,ssize);
187 206
188# endif 207# endif
189 208
190 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 209 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
191 210

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