reg.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 2003 Peter Wemm.
    5  * Copyright (c) 1990 The Regents of the University of California.
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to Berkeley by
    9  * William Jolitz.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. Neither the name of the University nor the names of its contributors
   20  *    may be used to endorse or promote products derived from this software
   21  *    without specific prior written permission.
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   33  * SUCH DAMAGE.
   34  *
   35  *      from: @(#)reg.h 5.5 (Berkeley) 1/18/91
   36  * $FreeBSD$
   37  */
   38 
   39 #ifndef _MACHINE_REG_H_
   40 #define _MACHINE_REG_H_
   41 
   42 #include <sys/_types.h>
   43 
   44 #ifdef __i386__
   45 /*
   46  * Indices for registers in `struct trapframe' and `struct regs'.
   47  *
   48  * This interface is deprecated.  In the kernel, it is only used in FPU
   49  * emulators to convert from register numbers encoded in instructions to
   50  * register values.  Everything else just accesses the relevant struct
   51  * members.  In userland, debuggers tend to abuse this interface since
   52  * they don't understand that `struct regs' is a struct.  I hope they have
   53  * stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U
   54  * and we can stop supporting the user area soon.
   55  */
   56 #define tFS     (0)
   57 #define tES     (1)
   58 #define tDS     (2)
   59 #define tEDI    (3)
   60 #define tESI    (4)
   61 #define tEBP    (5)
   62 #define tISP    (6)
   63 #define tEBX    (7)
   64 #define tEDX    (8)
   65 #define tECX    (9)
   66 #define tEAX    (10)
   67 #define tERR    (12)
   68 #define tEIP    (13)
   69 #define tCS     (14)
   70 #define tEFLAGS (15)
   71 #define tESP    (16)
   72 #define tSS     (17)
   73 
   74 /*
   75  * Indices for registers in `struct regs' only.
   76  *
   77  * Some registers live in the pcb and are only in an "array" with the
   78  * other registers in application interfaces that copy all the registers
   79  * to or from a `struct regs'.
   80  */
   81 #define tGS     (18)
   82 #endif /* __i386__ */
   83 
   84 /* Rename the structs below depending on the machine architecture. */
   85 #ifdef  __i386__
   86 #define __reg32         reg
   87 #define __fpreg32       fpreg
   88 #define __dbreg32       dbreg
   89 #define __segbasereg32  segbasereg
   90 #else
   91 #define __reg32         reg32
   92 #define __reg64         reg
   93 #define __fpreg32       fpreg32
   94 #define __fpreg64       fpreg
   95 #define __dbreg32       dbreg32
   96 #define __dbreg64       dbreg
   97 #define __segbasereg32  segbasereg32
   98 #define __segbasereg64  segbasereg
   99 #define __HAVE_REG32
  100 #endif
  101 
  102 /*
  103  * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
  104  */
  105 struct __reg32 {
  106         __uint32_t      r_fs;
  107         __uint32_t      r_es;
  108         __uint32_t      r_ds;
  109         __uint32_t      r_edi;
  110         __uint32_t      r_esi;
  111         __uint32_t      r_ebp;
  112         __uint32_t      r_isp;
  113         __uint32_t      r_ebx;
  114         __uint32_t      r_edx;
  115         __uint32_t      r_ecx;
  116         __uint32_t      r_eax;
  117         __uint32_t      r_trapno;
  118         __uint32_t      r_err;
  119         __uint32_t      r_eip;
  120         __uint32_t      r_cs;
  121         __uint32_t      r_eflags;
  122         __uint32_t      r_esp;
  123         __uint32_t      r_ss;
  124         __uint32_t      r_gs;
  125 };
  126 
  127 struct __reg64 {
  128         __int64_t       r_r15;
  129         __int64_t       r_r14;
  130         __int64_t       r_r13;
  131         __int64_t       r_r12;
  132         __int64_t       r_r11;
  133         __int64_t       r_r10;
  134         __int64_t       r_r9;
  135         __int64_t       r_r8;
  136         __int64_t       r_rdi;
  137         __int64_t       r_rsi;
  138         __int64_t       r_rbp;
  139         __int64_t       r_rbx;
  140         __int64_t       r_rdx;
  141         __int64_t       r_rcx;
  142         __int64_t       r_rax;
  143         __uint32_t      r_trapno;
  144         __uint16_t      r_fs;
  145         __uint16_t      r_gs;
  146         __uint32_t      r_err;
  147         __uint16_t      r_es;
  148         __uint16_t      r_ds;
  149         __int64_t       r_rip;
  150         __int64_t       r_cs;
  151         __int64_t       r_rflags;
  152         __int64_t       r_rsp;
  153         __int64_t       r_ss;
  154 };
  155 
  156 /*
  157  * Register set accessible via /proc/$pid/fpregs.
  158  *
  159  * XXX should get struct from fpu.h.  Here we give a slightly
  160  * simplified struct.  This may be too much detail.  Perhaps
  161  * an array of unsigned longs is best.
  162  */
  163 struct __fpreg32 {
  164         __uint32_t      fpr_env[7];
  165         __uint8_t       fpr_acc[8][10];
  166         __uint32_t      fpr_ex_sw;
  167         __uint8_t       fpr_pad[64];
  168 };
  169 
  170 struct __fpreg64 {
  171         __uint64_t      fpr_env[4];
  172         __uint8_t       fpr_acc[8][16];
  173         __uint8_t       fpr_xacc[16][16];
  174         __uint64_t      fpr_spare[12];
  175 };
  176 
  177 /*
  178  * Register set accessible via PT_GETXMMREGS (i386).
  179  */
  180 struct xmmreg {
  181         /*
  182          * XXX should get struct from npx.h.  Here we give a slightly
  183          * simplified struct.  This may be too much detail.  Perhaps
  184          * an array of unsigned longs is best.
  185          */
  186         __uint32_t      xmm_env[8];
  187         __uint8_t       xmm_acc[8][16];
  188         __uint8_t       xmm_reg[8][16];
  189         __uint8_t       xmm_pad[224];
  190 };
  191 
  192 /*
  193  * Register set accessible via /proc/$pid/dbregs.
  194  */
  195 struct __dbreg32 {
  196         __uint32_t      dr[8];  /* debug registers */
  197                                 /* Index 0-3: debug address registers */
  198                                 /* Index 4-5: reserved */
  199                                 /* Index 6: debug status */
  200                                 /* Index 7: debug control */
  201 };
  202 
  203 struct __dbreg64 {
  204         __uint64_t      dr[16]; /* debug registers */
  205                                 /* Index 0-3: debug address registers */
  206                                 /* Index 4-5: reserved */
  207                                 /* Index 6: debug status */
  208                                 /* Index 7: debug control */
  209                                 /* Index 8-15: reserved */
  210 };
  211 
  212 #define DBREG_DR6_RESERVED1     0xffff0ff0
  213 #define DBREG_DR6_BMASK         0x000f
  214 #define DBREG_DR6_B(i)          (1 << (i))
  215 #define DBREG_DR6_BD            0x2000
  216 #define DBREG_DR6_BS            0x4000
  217 #define DBREG_DR6_BT            0x8000
  218 
  219 #define DBREG_DR7_RESERVED1     0x0400
  220 #define DBREG_DR7_LOCAL_ENABLE  0x01
  221 #define DBREG_DR7_GLOBAL_ENABLE 0x02
  222 #define DBREG_DR7_LEN_1         0x00    /* 1 byte length          */
  223 #define DBREG_DR7_LEN_2         0x01
  224 #define DBREG_DR7_LEN_4         0x03
  225 #define DBREG_DR7_LEN_8         0x02
  226 #define DBREG_DR7_EXEC          0x00    /* break on execute       */
  227 #define DBREG_DR7_WRONLY        0x01    /* break on write         */
  228 #define DBREG_DR7_RDWR          0x03    /* break on read or write */
  229 #define DBREG_DR7_MASK(i)       \
  230         ((__u_register_t)(0xf) << ((i) * 4 + 16) | 0x3 << (i) * 2)
  231 #define DBREG_DR7_SET(i, len, access, enable)                           \
  232         ((__u_register_t)((len) << 2 | (access)) << ((i) * 4 + 16) |    \
  233         (enable) << (i) * 2)
  234 #define DBREG_DR7_GD            0x2000
  235 #define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0)
  236 #define DBREG_DR7_ACCESS(d, i)  ((d) >> ((i) * 4 + 16) & 0x3)
  237 #define DBREG_DR7_LEN(d, i)     ((d) >> ((i) * 4 + 18) & 0x3)
  238 
  239 #define DBREG_DRX(d,x)  ((d)->dr[(x)])  /* reference dr0 - dr7 by
  240                                            register number */
  241 
  242 /*
  243  * Register set accessible via NT_X86_SEGBASES.
  244  */
  245 struct __segbasereg32 {
  246         __uint32_t      r_fsbase;
  247         __uint32_t      r_gsbase;
  248 };
  249 
  250 struct __segbasereg64 {
  251         __uint64_t      r_fsbase;
  252         __uint64_t      r_gsbase;
  253 };
  254 
  255 #undef __reg32
  256 #undef __reg64
  257 #undef __fpreg32
  258 #undef __fpreg64
  259 #undef __dbreg32
  260 #undef __dbreg64
  261 #undef __segbasereg32
  262 #undef __segbasereg64
  263 
  264 #ifdef _KERNEL
  265 /*
  266  * XXX these interfaces are MI, so they should be declared in a MI place.
  267  */
  268 int     fill_frame_regs(struct trapframe *, struct reg *);
  269 #endif
  270 
  271 #endif /* !_MACHINE_REG_H_ */

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

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