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Comparing libcoro/coro.h (file contents):
Revision 1.20 by root, Fri Apr 27 19:26:18 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,
… …
38/* 38/*
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.
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.
43 */ 47 */
44 48
45#ifndef CORO_H 49#ifndef CORO_H
46#define CORO_H 50#define CORO_H
47 51
… …
88 * 92 *
89 * -DCORO_IRIX 93 * -DCORO_IRIX
90 * 94 *
91 * SGI's version of Microsoft's NT ;) 95 * SGI's version of Microsoft's NT ;)
92 * 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 *
93 * 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
94 * 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
95 * alternatives you should check (e.g. using autoconf) and define the 104 * alternatives you should check (e.g. using autoconf) and define the
96 * following symbols: HAVE_UCONTEXT_H / HAVE_SETJMP_H / HAVE_SIGALTSTACK. 105 * following symbols: HAVE_UCONTEXT_H / HAVE_SETJMP_H / HAVE_SIGALTSTACK.
97 */ 106 */
… …
135 144
136/*****************************************************************************/ 145/*****************************************************************************/
137 146
138#if !defined(CORO_LOSER) && !defined(CORO_UCONTEXT) \ 147#if !defined(CORO_LOSER) && !defined(CORO_UCONTEXT) \
139 && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \ 148 && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \
140 && !defined(CORO_IRIX) 149 && !defined(CORO_IRIX) && !defined(CORO_ASM)
141# if defined(WINDOWS) 150# if defined(WINDOWS)
142# define CORO_LOSER 1 /* you don't win with windoze */ 151# define CORO_LOSER 1 /* you don't win with windoze */
143# elif defined(__linux) && defined(__x86) 152# elif defined(__linux) && (defined(__x86) || defined (__amd64))
153# define CORO_ASM 1
144# elif defined(HAVE_UCONTEXT_H) 154# elif defined(HAVE_UCONTEXT_H)
145# define CORO_UCONTEXT 1 155# define CORO_UCONTEXT 1
146# elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK) 156# elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK)
147# define CORO_SJLJ 1 157# define CORO_SJLJ 1
148# else 158# else
… …
152 162
153/*****************************************************************************/ 163/*****************************************************************************/
154 164
155#if CORO_UCONTEXT 165#if CORO_UCONTEXT
156 166
157#include <ucontext.h> 167# include <ucontext.h>
158 168
159struct coro_context { 169struct coro_context {
160 ucontext_t uc; 170 ucontext_t uc;
161}; 171};
162 172
163#define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc)) 173# define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc))
164 174
165#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX 175#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
166 176
167#if defined(CORO_LINUX) && !defined(_GNU_SOURCE) 177# if defined(CORO_LINUX) && !defined(_GNU_SOURCE)
168# define _GNU_SOURCE /* for linux libc */ 178# define _GNU_SOURCE /* for linux libc */
169#endif 179# endif
170 180
171#include <setjmp.h> 181# include <setjmp.h>
172 182
173struct coro_context { 183struct coro_context {
174 jmp_buf env; 184 jmp_buf env;
175}; 185};
176 186
177#if CORO_LINUX 187# if CORO_LINUX || (_XOPEN_SOURCE >= 600)
178# 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)
179#else 189# else
180# 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
181#endif 202#endif
182 203
183#endif 204#endif
184 205
185#endif
186

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