/*-
* Copyright (c) 1995, 2000, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden and Emmanuel Dreyfus.
*
* 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.
*/
/*
* From Linux's include/asm-ppc/ptrace.h
* Needed for sigcontext
*/
struct linux_pt_regs {
#define lpt_regs_fixreg_begin lgpr[0]
unsigned long lgpr[32];
#define lpt_regs_fixreg_end lgpr[31]
unsigned long lnip;
unsigned long lmsr;
unsigned long lorig_gpr3; /* Used for restarting system calls */
unsigned long lctr;
unsigned long llink;
unsigned long lxer;
unsigned long lccr;
unsigned long lmq; /* 601 only (not used at present) */
/* Used on APUS to hold IPL value. */
unsigned long ltrap; /* Reason for being here */
unsigned long ldar; /* Fault registers */
unsigned long ldsisr;
unsigned long lresult; /* Result of a system call */
};
/*
* From Linux's include/asm-ppc/sigcontext.h
* Linux/ppc calls that struct sigcontext_struct
*/
struct linux_sigcontext {
unsigned long _unused[4];
int lsignal;
unsigned long lhandler;
unsigned long lmask;
struct linux_pt_regs *lregs;
};
/*
* From Linux's include/asm-ppc/elf.h
*/
#define LINUX_ELF_NGREG 48 /* includes nip, msr, lr, etc. */
#define LINUX_ELF_NFPREG 33 /* includes fpscr */
typedef unsigned long linux_elf_greg_t;
typedef linux_elf_greg_t linux_elf_gregset_t[LINUX_ELF_NGREG];
/*
* From Linux's include/asm-ppc/ptrace.h
*/
#define LINUX__SIGNAL_FRAMESIZE 64
/*
* We make the stack look like Linux expects it when calling a signal
* handler, but use the BSD way of calling the handler and sigreturn().
* This means that we need to pass the pointer to the handler too.
* It is appended to the frame to not interfere with the rest of it.
*
* The following is from Linux's arch/ppc/kern/signal.c:
*
* > When we have signals to deliver, we set up on the
* > user stack, going down from the original stack pointer:
* > a sigregs struct
* > one or more sigcontext structs with
* > a gap of LINUX__SIGNAL_FRAMESIZE bytes
* >
* > Each of these things must be a multiple of 16 bytes in size.
*
* linux_sigregs is a linux_sigframe on other Linux ports. Linux/PowerPC
* defines a rt_sigframe struct, but it is only used for RT signals. for
* non RT signals, struct sigregs is used instead.
*
* About the ltramp field: that trampoline code is not used. Instead, the
* sigcode (7 bytes long) trampoline code, copied by exec() on program startup
* is used. However, Linux binaries might expect it to be here.
*/
struct linux_sigregs {
linux_elf_gregset_t lgp_regs;
double lfp_regs[LINUX_ELF_NFPREG];
unsigned long ltramp[2];
/*
* Programs using the rs6000/xcoff abi can save up to 19 gp regs
* and 18 fp regs below sp before decrementing it.
*/
int labigap[56];
};
/*
* The following is not from Linux, we define it for convenience. It is the
* size of the abigap field of linux_sigregs.
*/
#define LINUX_ABIGAP (56*sizeof(int))
/*
* linux sigframe in a nutshell (however we don't use it):
*
* struct linux_sigframe {
* char _gap[LINUX__SIGNAL_FRAMESIZE];
* struct sigcontext lsc;
* struct linux_sigregs lsg;
* };
*/
/*
* From Linux's include/asm-ppc/ucontext.h
*/
struct linux_ucontext {
unsigned long luc_flags;
struct linux_ucontext *luc_link;
linux_stack_t luc_stack;
struct linux_sigcontext luc_context;
linux_sigset_t luc_sigmask; /* mask last for extensibility */
};
/*
* From Linux's arch/ppc/kernel/signal.c, the real rt_sigframe
*/
struct linux_rt_sigframe
{
unsigned long _unused[2];
struct linux_siginfo *lpinfo;
void *lpuc;
struct linux_siginfo linfo;
struct linux_ucontext luc;
};
/*
* Major device numbers of VT device on both Linux and NetBSD. Used in
* ugly patch to fake device numbers.
*
* LINUX_CONS_MAJOR is from Linux's include/linux/major.h
*/
#define LINUX_CONS_MAJOR 4
/*
* Mode for KDSKBMODE which we don't have (we just use plain mode for this)
*
* From Linux's include/linux/kd.h
*/
#define LINUX_K_MEDIUMRAW 2
/*
* VT ioctl calls in Linux (the ones that the pcvt emulation in
* wscons can handle)
*
* From Linux's include/linux/vt.h
*/
#define LINUX_VT_OPENQRY 0x5600
#define LINUX_VT_GETMODE 0x5601
#define LINUX_VT_SETMODE 0x5602
#define LINUX_VT_GETSTATE 0x5603
#define LINUX_VT_RELDISP 0x5605
#define LINUX_VT_ACTIVATE 0x5606
#define LINUX_VT_WAITACTIVE 0x5607
#define LINUX_VT_DISALLOCATE 0x5608
/*
* This range used by VMWare (XXX)
*
* From Linux's include/linux/vt.h
* XXX It's not sure this s needed for powerpc
*/
#define LINUX_VMWARE_NONE 200
#define LINUX_VMWARE_LAST 237
/*
* Range of ioctls to just pass on, so that modules (like VMWare) can
* handle them.
*
* From Linux's include/linux/vt.h
*/
#define LINUX_IOCTL_MIN_PASS LINUX_VMWARE_NONE
#define LINUX_IOCTL_MAX_PASS (LINUX_VMWARE_LAST+8)
#ifdef _KERNEL
__BEGIN_DECLS /* XXX from NetBSD/i386. Not arch dependent? */
void linux_syscall_intern(struct proc *);
__END_DECLS
#endif /* !_KERNEL */
