04b33e2186
glibc used to have:
typedef struct ucontext { ... } ucontext_t;
glibc now has:
typedef struct ucontext_t { ... } ucontext_t;
(See https://sourceware.org/bugzilla/show_bug.cgi?id=21457
for detail and rationale for the glibc change)
However, QEMU used "struct ucontext" in declarations. This is a
private name and compatibility cannot be guaranteed. Switch to
only using the standardized type name.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Message-id: 20170628204452.41230-1-raj.khem@gmail.com
Cc: Kamil Rytarowski <kamil@netbsd.org>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[PMM: Rewrote commit message, based mostly on the one from
Nathaniel McCallum]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
39 lines
971 B
C
39 lines
971 B
C
/*
|
|
* hostdep.h : things which are dependent on the host architecture
|
|
*
|
|
* * Written by Peter Maydell <peter.maydell@linaro.org>
|
|
*
|
|
* Copyright (C) 2016 Linaro Limited
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#ifndef X86_64_HOSTDEP_H
|
|
#define X86_64_HOSTDEP_H
|
|
|
|
/* We have a safe-syscall.inc.S */
|
|
#define HAVE_SAFE_SYSCALL
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
/* These are defined by the safe-syscall.inc.S file */
|
|
extern char safe_syscall_start[];
|
|
extern char safe_syscall_end[];
|
|
|
|
/* Adjust the signal context to rewind out of safe-syscall if we're in it */
|
|
static inline void rewind_if_in_safe_syscall(void *puc)
|
|
{
|
|
ucontext_t *uc = puc;
|
|
greg_t *pcreg = &uc->uc_mcontext.gregs[REG_RIP];
|
|
|
|
if (*pcreg > (uintptr_t)safe_syscall_start
|
|
&& *pcreg < (uintptr_t)safe_syscall_end) {
|
|
*pcreg = (uintptr_t)safe_syscall_start;
|
|
}
|
|
}
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
|
|
#endif
|