/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2003 Peter Wemm.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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: @(#)frame.h 5.2 (Berkeley) 1/18/91
*/
#ifndef _MACHINE_FRAME_H_
#define _MACHINE_FRAME_H_ 1
/*
* System stack frames.
*/
#ifdef __i386__
/*
* Exception/Trap Stack Frame
*/
struct trapframe {
int tf_fs;
int tf_es;
int tf_ds;
int tf_edi;
int tf_esi;
int tf_ebp;
int tf_isp;
int tf_ebx;
int tf_edx;
int tf_ecx;
int tf_eax;
int tf_trapno;
/* below portion defined in 386 hardware */
int tf_err;
int tf_eip;
int tf_cs;
int tf_eflags;
/* below only when crossing rings (user to kernel) */
int tf_esp;
int tf_ss;
};
/* Superset of trap frame, for traps from virtual-8086 mode */
struct trapframe_vm86 {
int tf_fs;
int tf_es;
int tf_ds;
int tf_edi;
int tf_esi;
int tf_ebp;
int tf_isp;
int tf_ebx;
int tf_edx;
int tf_ecx;
int tf_eax;
int tf_trapno;
/* below portion defined in 386 hardware */
int tf_err;
int tf_eip;
int tf_cs;
int tf_eflags;
/* below only when crossing rings (user (including vm86) to kernel) */
int tf_esp;
int tf_ss;
/* below only when crossing from vm86 mode to kernel */
int tf_vm86_es;
int tf_vm86_ds;
int tf_vm86_fs;
int tf_vm86_gs;
};
/*
* This alias for the MI TRAPF_USERMODE() should be used when we don't
* care about user mode itself, but need to know if a frame has stack
* registers. The difference is only logical, but on i386 the logic
* for using TRAPF_USERMODE() is complicated by sometimes treating vm86
* bioscall mode (which is a special ring 3 user mode) as kernel mode.
*/
#define TF_HAS_STACKREGS(tf) TRAPF_USERMODE(tf)
#endif /* __i386__ */
#ifdef __amd64__
/*
* Exception/Trap Stack Frame
*
* The ordering of this is specifically so that we can take first 6
* the syscall arguments directly from the beginning of the frame.
*/
struct trapframe {
register_t tf_rdi;
register_t tf_rsi;
register_t tf_rdx;
register_t tf_rcx;
register_t tf_r8;
register_t tf_r9;
register_t tf_rax;
register_t tf_rbx;
register_t tf_rbp;
register_t tf_r10;
register_t tf_r11;
register_t tf_r12;
register_t tf_r13;
register_t tf_r14;
register_t tf_r15;
uint32_t tf_trapno;
uint16_t tf_fs;
uint16_t tf_gs;
register_t tf_addr;
uint32_t tf_flags;
uint16_t tf_es;
uint16_t tf_ds;
/* below portion defined in hardware */
register_t tf_err;
register_t tf_rip;
register_t tf_cs;
register_t tf_rflags;
/* the amd64 frame always has the stack registers */
register_t tf_rsp;
register_t tf_ss;
};
#define TF_HASSEGS 0x1
#define TF_HASBASES 0x2
#define TF_HASFPXSTATE 0x4
#endif /* __amd64__ */
#endif /* _MACHINE_FRAME_H_ */
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