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Comparing libcoro/coro.h (file contents):
Revision 1.21 by root, Fri Apr 27 19:35:28 2007 UTC vs.
Revision 1.23 by root, Sun Jan 20 17:30:24 2008 UTC

1/* 1/*
2 * Copyright (c) 2001-2006 Marc Alexander Lehmann <schmorp@schmorp.de> 2 * Copyright (c) 2001-2008 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,
… …
39 * 2006-10-26 Include stddef.h on OS X to work around one of its bugs. 39 * 2006-10-26 Include stddef.h on OS X to work around one of its bugs.
40 * Reported by Michael_G_Schwern. 40 * Reported by Michael_G_Schwern.
41 * 2006-11-26 Use _setjmp instead of setjmp on GNU/Linux. 41 * 2006-11-26 Use _setjmp instead of setjmp on GNU/Linux.
42 * 2007-04-27 Set unwind frame info if gcc 3+ and ELF is detected. 42 * 2007-04-27 Set unwind frame info if gcc 3+ and ELF is detected.
43 * Use _setjmp instead of setjmp on _XOPEN_SOURCE >= 600. 43 * Use _setjmp instead of setjmp on _XOPEN_SOURCE >= 600.
44 * 2007-05-02 Add assembly versions for x86 and amd64 (to avoid reliance
45 * on SIGUSR2 and sigaltstack in Crossfire).
46 * 2008-01-21 Disable CFI usage on anything but GNU/Linux.
44 */ 47 */
45 48
46#ifndef CORO_H 49#ifndef CORO_H
47#define CORO_H 50#define CORO_H
48 51
… …
89 * 92 *
90 * -DCORO_IRIX 93 * -DCORO_IRIX
91 * 94 *
92 * SGI's version of Microsoft's NT ;) 95 * SGI's version of Microsoft's NT ;)
93 * 96 *
97 * -DCORO_ASM
98 *
99 * Handcoded assembly, known to work only on a few architectures/ABI:
100 * ELF Linux x86 && amd64 when gcc is used and optimisation is turned on.
101 *
94 * If you define neither of these symbols, coro.h will try to autodetect 102 * If you define neither of these symbols, coro.h will try to autodetect
95 * the model. This currently works for CORO_LOSER only. For the other 103 * the model. This currently works for CORO_LOSER only. For the other
96 * alternatives you should check (e.g. using autoconf) and define the 104 * alternatives you should check (e.g. using autoconf) and define the
97 * following symbols: HAVE_UCONTEXT_H / HAVE_SETJMP_H / HAVE_SIGALTSTACK. 105 * following symbols: HAVE_UCONTEXT_H / HAVE_SETJMP_H / HAVE_SIGALTSTACK.
98 */ 106 */
… …
136 144
137/*****************************************************************************/ 145/*****************************************************************************/
138 146
139#if !defined(CORO_LOSER) && !defined(CORO_UCONTEXT) \ 147#if !defined(CORO_LOSER) && !defined(CORO_UCONTEXT) \
140 && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \ 148 && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \
141 && !defined(CORO_IRIX) 149 && !defined(CORO_IRIX) && !defined(CORO_ASM)
142# if defined(WINDOWS) 150# if defined(WINDOWS)
143# define CORO_LOSER 1 /* you don't win with windoze */ 151# define CORO_LOSER 1 /* you don't win with windoze */
144# elif defined(__linux) && defined(__x86) 152# elif defined(__linux) && (defined(__x86) || defined (__amd64))
153# define CORO_ASM 1
145# elif defined(HAVE_UCONTEXT_H) 154# elif defined(HAVE_UCONTEXT_H)
146# define CORO_UCONTEXT 1 155# define CORO_UCONTEXT 1
147# elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK) 156# elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK)
148# define CORO_SJLJ 1 157# define CORO_SJLJ 1
149# else 158# else
… …
153 162
154/*****************************************************************************/ 163/*****************************************************************************/
155 164
156#if CORO_UCONTEXT 165#if CORO_UCONTEXT
157 166
158#include <ucontext.h> 167# include <ucontext.h>
159 168
160struct coro_context { 169struct coro_context {
161 ucontext_t uc; 170 ucontext_t uc;
162}; 171};
163 172
164#define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc)) 173# define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc))
165 174
166#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX 175#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
167 176
168#if defined(CORO_LINUX) && !defined(_GNU_SOURCE) 177# if defined(CORO_LINUX) && !defined(_GNU_SOURCE)
169# define _GNU_SOURCE /* for linux libc */ 178# define _GNU_SOURCE /* for linux libc */
170#endif 179# endif
171 180
172#include <setjmp.h> 181# include <setjmp.h>
173 182
174struct coro_context { 183struct coro_context {
175 jmp_buf env; 184 jmp_buf env;
176}; 185};
177 186
178#if CORO_LINUX || (_XOPEN_SOURCE >= 600) 187# if CORO_LINUX || (_XOPEN_SOURCE >= 600)
179# define coro_transfer(p,n) do { if (!_setjmp ((p)->env)) _longjmp ((n)->env, 1); } while (0) 188# define coro_transfer(p,n) do { if (!_setjmp ((p)->env)) _longjmp ((n)->env, 1); } while (0)
180#else 189# else
181# define coro_transfer(p,n) do { if (!setjmp ((p)->env)) longjmp ((n)->env, 1); } while (0) 190# define coro_transfer(p,n) do { if (!setjmp ((p)->env)) longjmp ((n)->env, 1); } while (0)
191# endif
192
193#elif CORO_ASM
194
195struct coro_context {
196 volatile void **sp;
197};
198
199void __attribute__ ((__noinline__, __fastcall__))
200 coro_transfer(coro_context *prev, coro_context *next);
201
182#endif 202#endif
183 203
184#endif 204#endif
185 205
186#endif
187

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