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The default definition of setjmp which is implemented in MinGW-w64 cannot be used with programs like QEMU which call longjmp from code without structured exception handling (SEH). This code therefore disables stack unwinding. We could also implement SEH for QEMU's generated JIT code, but that is much more difficult. Stack unwinding would also cost execution time. Signed-off-by: Stefan Weil <sw@weilnetz.de>
89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
/*
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* win32 specific declarations
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_OS_WIN32_H
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#define QEMU_OS_WIN32_H
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#include <windows.h>
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#include <winsock2.h>
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#include "main-loop.h"
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/* Workaround for older versions of MinGW. */
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#ifndef ECONNREFUSED
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# define ECONNREFUSED WSAECONNREFUSED
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#endif
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#ifndef EINPROGRESS
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# define EINPROGRESS WSAEINPROGRESS
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#endif
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#ifndef EHOSTUNREACH
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# define EHOSTUNREACH WSAEHOSTUNREACH
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#endif
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#ifndef EINTR
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# define EINTR WSAEINTR
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#endif
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#ifndef EINPROGRESS
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# define EINPROGRESS WSAEINPROGRESS
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#endif
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#ifndef ENETUNREACH
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# define ENETUNREACH WSAENETUNREACH
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#endif
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#ifndef ENOTCONN
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# define ENOTCONN WSAENOTCONN
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#endif
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#ifndef EWOULDBLOCK
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# define EWOULDBLOCK WSAEWOULDBLOCK
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#endif
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#if defined(_WIN64)
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/* On w64, setjmp is implemented by _setjmp which needs a second parameter.
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* If this parameter is NULL, longjump does no stack unwinding.
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* That is what we need for QEMU. Passing the value of register rsp (default)
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* lets longjmp try a stack unwinding which will crash with generated code. */
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# undef setjmp
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# define setjmp(env) _setjmp(env, NULL)
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#endif
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/* Declaration of ffs() is missing in MinGW's strings.h. */
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int ffs(int i);
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static inline void os_setup_signal_handling(void) {}
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static inline void os_daemonize(void) {}
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static inline void os_setup_post(void) {}
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void os_set_line_buffering(void);
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static inline void os_set_proc_name(const char *dummy) {}
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#if !defined(EPROTONOSUPPORT)
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# define EPROTONOSUPPORT EINVAL
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#endif
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int setenv(const char *name, const char *value, int overwrite);
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typedef struct {
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long tv_sec;
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long tv_usec;
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} qemu_timeval;
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int qemu_gettimeofday(qemu_timeval *tp);
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#endif
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