/* $NetBSD: linux_machdep.h,v 1.15 2024/10/01 16:35:42 riastradh Exp $ */

/* $NetBSD: linux_machdep.h,v 1.15 2024/10/01 16:35:42 riastradh Exp $ */

/*-
* Copyright (c) 2005 Emmanuel Dreyfus, all rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Emmanuel Dreyfus
* 4. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR 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 AUTHOR 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.
*/

#ifndef _AMD64_LINUX_MACHDEP_H
#define _AMD64_LINUX_MACHDEP_H

#define LINUX_STATFS_64BIT /* Needed for full 64bit struct statfs */

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_siginfo.h>

/* From <asm/sigcontext.h> */
/* Matches the cpu's fxsave format */
struct linux__fpstate {
u_int16_t cwd;
u_int16_t swd;
u_int16_t twd;
u_int16_t fop;
u_int64_t rip;
u_int64_t rdp;
u_int32_t mxcsr;
u_int32_t mxcsr_mask;
u_int32_t st_space[32];
u_int32_t xmm_space[64];
u_int32_t reserved2[24];
};
__CTASSERT(sizeof (struct linux__fpstate) == 512);

/* From <asm/sigcontext.h> */
struct linux_sigcontext {
u_int64_t r8;
u_int64_t r9;
u_int64_t r10;
u_int64_t r11;
u_int64_t r12;
u_int64_t r13;
u_int64_t r14;
u_int64_t r15;
u_int64_t rdi;
u_int64_t rsi;
u_int64_t rbp;
u_int64_t rbx;
u_int64_t rdx;
u_int64_t rax;
u_int64_t rcx;
u_int64_t rsp;
u_int64_t rip;
u_int64_t eflags;
u_int16_t cs;
u_int16_t gs;
u_int16_t fs;
u_int16_t pad0;
u_int64_t err;
u_int64_t trapno;
u_int64_t oldmask;
u_int64_t cr2;
struct linux__fpstate *fpstate;
u_int64_t reserved1[8];
};

/* From <asm/ucontext.h> */
struct linux_ucontext {
u_int64_t luc_flags;
struct linux_ucontext *luc_link;
linux_stack_t luc_stack;
struct linux_sigcontext luc_mcontext;
linux_sigset_t luc_sigmask;
};

/* From linux/arch/x86_64/kernel/signal.c */
struct linux_rt_sigframe {
char *pretcode;
struct linux_ucontext uc;
struct linux_siginfo info;
};

#ifdef _KERNEL
__BEGIN_DECLS
void linux_syscall_intern(struct proc *);
__END_DECLS
#endif /* !_KERNEL */

#define LINUX_VSYSCALL_START 0xffffffffff600000
#define LINUX_VSYSCALL_SIZE 1024
#define LINUX_VSYSCALL_MAXNR 3

#define LINUX_UNAME_ARCH MACHINE_ARCH
#define LINUX_LARGEFILE64
#define LINUX_IPC_FORCE64

#define LINUX_LWP_SETPRIVATE linux_lwp_setprivate

/*
* Used in ugly patch to fake device numbers.
*/
/* Major device numbers for new style ptys. */
#define LINUX_PTC_MAJOR 2
#define LINUX_PTS_MAJOR 3
/* Major device numbers of VT device on both Linux and NetBSD. */
#define LINUX_CONS_MAJOR 4

#endif /* _AMD64_LINUX_MACHDEP_H */