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Comparing libcoro/coro.c (file contents):
Revision 1.6 by root, Mon Sep 3 03:36:00 2001 UTC vs.
Revision 1.20 by root, Thu Oct 26 05:20:47 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
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
39# define STACK_ADJUST(sp,ss) ((ss) - 8 + (char *)(sp)) 41# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
40#else
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++;
… …
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;
… …
123 143
124 if (sigaction (SIGUSR2, &nsa, &osa)) 144 if (sigaction (SIGUSR2, &nsa, &osa))
125 perror ("sigaction"); 145 perror ("sigaction");
126 146
127 /* set the new stack */ 147 /* set the new stack */
128 nstk.ss_sp = STACK_ADJUST(sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 148 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
129 nstk.ss_size = ssize; 149 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
130 nstk.ss_flags = 0; 150 nstk.ss_flags = 0;
131 151
132 if (sigaltstack (&nstk, &ostk) < 0) 152 if (sigaltstack (&nstk, &ostk) < 0)
133 perror ("sigaltstack"); 153 perror ("sigaltstack");
134 154
… …
149 abort (); 169 abort ();
150 170
151 if (~ostk.ss_flags & SS_DISABLE) 171 if (~ostk.ss_flags & SS_DISABLE)
152 sigaltstack (&ostk, 0); 172 sigaltstack (&ostk, 0);
153 173
154 sigaction (SIGUSR1, &osa, 0); 174 sigaction (SIGUSR2, &osa, 0);
155 175
156 sigprocmask (SIG_SETMASK, &osig, 0); 176 sigprocmask (SIG_SETMASK, &osig, 0);
157 177
158# elif CORO_LOOSE 178# elif CORO_LOSER
159 179
160 setjmp (ctx->env); 180 setjmp (ctx->env);
161 ctx->env[7] = (int)((char *)sptr + ssize); 181 ctx->env[7] = (long)((char *)sptr + ssize);
162 ctx->env[8] = (int)coro_init; 182 ctx->env[8] = (long)coro_init;
163 183
164# elif CORO_LINUX 184# elif CORO_LINUX
165 185
166 setjmp (ctx->env); 186 setjmp (ctx->env);
167#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 187#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
168 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP) 188 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP)
169 ctx->env[0].__jmpbuf[JB_PC] = (int)coro_init; 189 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
170 ctx->env[0].__jmpbuf[JB_SP] = (int)((char *)sptr + ssize); 190 ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr,ssize);
171#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \ 191#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
172 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__) 192 && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__)
173 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; 193 ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
174 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); 194 ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
175#elif defined(__GNU_LIBRARY__) && defined(__i386__) 195#elif defined(__GNU_LIBRARY__) && defined(__i386__)
176 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 196 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
177 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); 197 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
198#elif defined(__GNU_LIBRARY__) && defined(__amd64__)
199 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
200 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize);
178#else 201#else
179#error "linux libc or architecture not supported" 202#error "linux libc or architecture not supported"
180#endif 203#endif
181 204
182# elif CORO_IRIX 205# elif CORO_IRIX
183 206
184 setjmp (ctx->env); 207 setjmp (ctx->env);
185 ctx->env[JB_PC] = (__uint64_t)coro_init; 208 ctx->env[JB_PC] = (__uint64_t)coro_init;
186 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST(sptr,ssize); 209 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr,ssize);
187 210
188# endif 211# endif
189 212
190 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 213 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
191 214

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