The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/x86/include/frame.h

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    1 /*-
    2  * Copyright (c) 2003 Peter Wemm.
    3  * Copyright (c) 1990 The Regents of the University of California.
    4  * All rights reserved.
    5  *
    6  * This code is derived from software contributed to Berkeley by
    7  * William Jolitz.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      from: @(#)frame.h       5.2 (Berkeley) 1/18/91
   34  * $FreeBSD$
   35  */
   36 
   37 #ifndef _MACHINE_FRAME_H_
   38 #define _MACHINE_FRAME_H_ 1
   39 
   40 /*
   41  * System stack frames.
   42  */
   43 
   44 #ifdef __i386__
   45 /*
   46  * Exception/Trap Stack Frame
   47  */
   48 
   49 struct trapframe {
   50         int     tf_fs;
   51         int     tf_es;
   52         int     tf_ds;
   53         int     tf_edi;
   54         int     tf_esi;
   55         int     tf_ebp;
   56         int     tf_isp;
   57         int     tf_ebx;
   58         int     tf_edx;
   59         int     tf_ecx;
   60         int     tf_eax;
   61         int     tf_trapno;
   62         /* below portion defined in 386 hardware */
   63         int     tf_err;
   64         int     tf_eip;
   65         int     tf_cs;
   66         int     tf_eflags;
   67         /* below only when crossing rings (user to kernel) */
   68         int     tf_esp;
   69         int     tf_ss;
   70 };
   71 
   72 /* Superset of trap frame, for traps from virtual-8086 mode */
   73 
   74 struct trapframe_vm86 {
   75         int     tf_fs;
   76         int     tf_es;
   77         int     tf_ds;
   78         int     tf_edi;
   79         int     tf_esi;
   80         int     tf_ebp;
   81         int     tf_isp;
   82         int     tf_ebx;
   83         int     tf_edx;
   84         int     tf_ecx;
   85         int     tf_eax;
   86         int     tf_trapno;
   87         /* below portion defined in 386 hardware */
   88         int     tf_err;
   89         int     tf_eip;
   90         int     tf_cs;
   91         int     tf_eflags;
   92         /* below only when crossing rings (user (including vm86) to kernel) */
   93         int     tf_esp;
   94         int     tf_ss;
   95         /* below only when crossing from vm86 mode to kernel */
   96         int     tf_vm86_es;
   97         int     tf_vm86_ds;
   98         int     tf_vm86_fs;
   99         int     tf_vm86_gs;
  100 };
  101 
  102 /*
  103  * This alias for the MI TRAPF_USERMODE() should be used when we don't
  104  * care about user mode itself, but need to know if a frame has stack
  105  * registers.  The difference is only logical, but on i386 the logic
  106  * for using TRAPF_USERMODE() is complicated by sometimes treating vm86
  107  * bioscall mode (which is a special ring 3 user mode) as kernel mode.
  108  */
  109 #define TF_HAS_STACKREGS(tf)    TRAPF_USERMODE(tf)
  110 #endif /* __i386__ */
  111 
  112 #ifdef __amd64__
  113 /*
  114  * Exception/Trap Stack Frame
  115  *
  116  * The ordering of this is specifically so that we can take first 6
  117  * the syscall arguments directly from the beginning of the frame.
  118  */
  119 
  120 struct trapframe {
  121         register_t      tf_rdi;
  122         register_t      tf_rsi;
  123         register_t      tf_rdx;
  124         register_t      tf_rcx;
  125         register_t      tf_r8;
  126         register_t      tf_r9;
  127         register_t      tf_rax;
  128         register_t      tf_rbx;
  129         register_t      tf_rbp;
  130         register_t      tf_r10;
  131         register_t      tf_r11;
  132         register_t      tf_r12;
  133         register_t      tf_r13;
  134         register_t      tf_r14;
  135         register_t      tf_r15;
  136         uint32_t        tf_trapno;
  137         uint16_t        tf_fs;
  138         uint16_t        tf_gs;
  139         register_t      tf_addr;
  140         uint32_t        tf_flags;
  141         uint16_t        tf_es;
  142         uint16_t        tf_ds;
  143         /* below portion defined in hardware */
  144         register_t      tf_err;
  145         register_t      tf_rip;
  146         register_t      tf_cs;
  147         register_t      tf_rflags;
  148         /* the amd64 frame always has the stack registers */
  149         register_t      tf_rsp;
  150         register_t      tf_ss;
  151 };
  152 
  153 #define TF_HASSEGS      0x1
  154 #define TF_HASBASES     0x2
  155 #define TF_HASFPXSTATE  0x4
  156 #endif /* __amd64__ */
  157 
  158 #endif /* _MACHINE_FRAME_H_ */

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