mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 11:55:53 +00:00
be662a18b7
I hadn't been running a SKAS3 host when testing the "uml: fix hang in TT mode
on fault" patch (commit 546fe1cbf9), and I
didn't think enough to the missing trap_no in SKAS3 mode.
In fact, the resulting kernel doesn't work at all in SKAS3 mode.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __SYS_SIGCONTEXT_I386_H
|
|
#define __SYS_SIGCONTEXT_I386_H
|
|
|
|
#include "uml-config.h"
|
|
#include <sysdep/sc.h>
|
|
|
|
#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
|
|
|
|
#define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
|
|
#define SC_SET_SYSCALL_RETURN(sc, result) SC_EAX(sc) = (result)
|
|
|
|
#define GET_FAULTINFO_FROM_SC(fi,sc) \
|
|
{ \
|
|
(fi).cr2 = SC_CR2(sc); \
|
|
(fi).error_code = SC_ERR(sc); \
|
|
(fi).trap_no = SC_TRAPNO(sc); \
|
|
}
|
|
|
|
/* ptrace expects that, at the start of a system call, %eax contains
|
|
* -ENOSYS, so this makes it so.
|
|
*/
|
|
#define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0)
|
|
|
|
/* This is Page Fault */
|
|
#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
|
|
|
|
/* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */
|
|
#ifdef UML_CONFIG_MODE_SKAS
|
|
#define SEGV_MAYBE_FIXABLE(fi) ((fi)->trap_no == 0 && ptrace_faultinfo)
|
|
#else
|
|
#define SEGV_MAYBE_FIXABLE(fi) 0
|
|
#endif
|
|
|
|
extern unsigned long *sc_sigmask(void *sc_ptr);
|
|
extern int sc_get_fpregs(unsigned long buf, void *sc_ptr);
|
|
|
|
#endif
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|