/* $NetBSD: linux_machdep.h,v 1.7 2008/04/28 20:23:42 martin Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by ITOH Yasufumi.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Signal stack definitions for old signal interface.
*/
struct linux_sigcontext {
linux_old_sigset_t sc_mask; /* signal mask to restore */
u_int sc_sp; /* usp to restore */
u_int sc_d0;
u_int sc_d1;
u_int sc_a0;
u_int sc_a1;
u_short sc_ps; /* processor status (sr reg) */
u_int sc_pc;
/*
* The Linux sigstate (state of hardware).
*/
struct linux_sigstate {
u_short ss_format:4, /* frame # */
ss_vector:12; /* vector offset */
struct linux_fpframe {
u_int fpf_regs[2][3]; /* only fp0 and fp1 */
u_int fpf_fpcr;
u_int fpf_fpsr;
u_int fpf_fpiar;
union FPF_u1 FPF_u1;
union FPF_u2 FPF_u2;
} ss_fpstate; /* 68881/68882 state info */
union F_u ss_frame; /* original exception frame */
} sc_ss;
};
/*
* The Linux compatible signal frame
* On Linux, the sigtramp code is on the frame structure.
*/
struct linux_sigframe {
void *sf_psigtramp;
int sf_signum; /* signo for handler */
int sf_code; /* Linux stores vector offset here */
struct linux_sigcontext *sf_scp; /* context ptr for handler */
int sf_sigtramp[2];
struct linux_sigc2 {
#if LINUX__NSIG_WORDS > 1
/* This breaks backward compatibility, but Linux 2.1 has.... */
u_long c_extrasigmask[LINUX__NSIG_WORDS - 1];
#endif
struct linux_sigcontext c_sc; /* actual context */
} sf_c;
};
struct linux_mcontext {
int mc_version;
linux_gregset_t mc_gregs;
linux_fpregset_t mc_fpregs;
};
#define LINUX_MCONTEXT_VERSION 2
struct linux_ucontext {
u_long uc_flags; /* 0 */
struct linux_ucontext *uc_link; /* 0 */
linux_stack_t uc_stack;
struct linux_mcontext uc_mc;
struct linux_rt_sigstate {
struct linux_rt_fpframe {
union FPF_u1 FPF_u1;
union FPF_u2 FPF_u2;
} ss_fpstate;
unsigned int ss_unused1:16,
ss_format:4,
ss_vector:12;
union F_u ss_frame; /* original exception frame */
int ss_unused2[4];
} uc_ss;
linux_sigset_t uc_sigmask;
};
/*
* The Linux compatible RT signal frame
* On Linux, the sigtramp code is on the frame structure.
*/
struct linux_rt_sigframe {
void *sf_psigtramp;
int sf_signum;
struct linux_siginfo *sf_pinfo;
void *sf_puc;
struct linux_siginfo sf_info;
struct linux_ucontext sf_uc;
int sf_sigtramp[2];
};
