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2008-03-08 Roland McGrath <roland@frob.com>

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* sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler):
	Clear DF bit in thread state's eflags.
	Reported by Samuel Thibault <samuel.thibault@ens-lyon.org>.
This commit is contained in:
Roland McGrath 2008-03-08 21:39:00 +00:00
parent b3278554af
commit d2ea0b9659
1 changed files with 5 additions and 1 deletions
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6
sysdeps/mach/hurd/i386/trampoline.c
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@ -1,5 +1,5 @@
/* Set thread_state for sighandler, and sigcontext to recover. i386 version. /* Set thread_state for sighandler, and sigcontext to recover. i386 version.
Copyright (C) 1994,1995,1996,1997,1998,1999,2005 Copyright (C) 1994,1995,1996,1997,1998,1999,2005,2008
Free Software Foundation, Inc. Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
@ -21,6 +21,7 @@
#include <hurd/signal.h> #include <hurd/signal.h>
#include <hurd/userlink.h> #include <hurd/userlink.h>
#include <thread_state.h> #include <thread_state.h>
#include <mach/machine/eflags.h>
#include <assert.h> #include <assert.h>
#include <errno.h> #include <errno.h>
#include "hurdfault.h" #include "hurdfault.h"
@ -218,6 +219,9 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler,
/* We pass the handler function to the trampoline code in %edx. */ /* We pass the handler function to the trampoline code in %edx. */
state->basic.edx = (int) handler; state->basic.edx = (int) handler;
/* The x86 ABI says the DF bit is clear on entry to any function. */
state->basic.efl &= ~EFL_DF;
return scp; return scp;
} }