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/mips/include/ucontext.h

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    1 /*
    2  * Copyright (c) 1992, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * Ralph Campbell.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 4. Neither the name of the University nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  *      @(#)ucontext.h  8.1 (Berkeley) 6/10/93
   33  *      JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta
   34  * $FreeBSD: releng/8.4/sys/mips/include/ucontext.h 215938 2010-11-27 12:26:40Z jchandra $
   35  */
   36 
   37 #ifndef _MACHINE_UCONTEXT_H_
   38 #define _MACHINE_UCONTEXT_H_
   39 
   40 #ifndef _LOCORE
   41 
   42 typedef struct  __mcontext {
   43         /*
   44          * These fields must match the corresponding fields in struct 
   45          * sigcontext which follow 'sc_mask'. That way we can support
   46          * struct sigcontext and ucontext_t at the same time.
   47          */
   48         int             mc_onstack;     /* sigstack state to restore */
   49         register_t      mc_pc;          /* pc at time of signal */
   50         register_t      mc_regs[32];    /* processor regs 0 to 31 */
   51         register_t      sr;             /* status register */
   52         register_t      mullo, mulhi;   /* mullo and mulhi registers... */
   53         int             mc_fpused;      /* fp has been used */
   54         f_register_t    mc_fpregs[33];  /* fp regs 0 to 31 and csr */
   55         register_t      mc_fpc_eir;     /* fp exception instruction reg */
   56         void            *mc_tls;        /* pointer to TLS area */
   57         int             __spare__[8];   /* XXX reserved */ 
   58 } mcontext_t;
   59 #endif
   60 
   61 #ifndef SZREG
   62 #if defined(__mips_o32)
   63 #define SZREG   4
   64 #else
   65 #define SZREG   8
   66 #endif
   67 #endif
   68 
   69 /* offsets into mcontext_t */
   70 #define UCTX_REG(x)     (4 + SZREG + (x)*SZREG)
   71 
   72 #define UCR_ZERO        UCTX_REG(0)
   73 #define UCR_AT          UCTX_REG(1)
   74 #define UCR_V0          UCTX_REG(2)
   75 #define UCR_V1          UCTX_REG(3)
   76 #define UCR_A0          UCTX_REG(4)
   77 #define UCR_A1          UCTX_REG(5)
   78 #define UCR_A2          UCTX_REG(6)
   79 #define UCR_A3          UCTX_REG(7)
   80 #define UCR_T0          UCTX_REG(8)
   81 #define UCR_T1          UCTX_REG(9)
   82 #define UCR_T2          UCTX_REG(10)
   83 #define UCR_T3          UCTX_REG(11)
   84 #define UCR_T4          UCTX_REG(12)
   85 #define UCR_T5          UCTX_REG(13)
   86 #define UCR_T6          UCTX_REG(14)
   87 #define UCR_T7          UCTX_REG(15)
   88 #define UCR_S0          UCTX_REG(16)
   89 #define UCR_S1          UCTX_REG(17)
   90 #define UCR_S2          UCTX_REG(18)
   91 #define UCR_S3          UCTX_REG(19)
   92 #define UCR_S4          UCTX_REG(20)
   93 #define UCR_S5          UCTX_REG(21)
   94 #define UCR_S6          UCTX_REG(22)
   95 #define UCR_S7          UCTX_REG(23)
   96 #define UCR_T8          UCTX_REG(24)
   97 #define UCR_T9          UCTX_REG(25)
   98 #define UCR_K0          UCTX_REG(26)
   99 #define UCR_K1          UCTX_REG(27)
  100 #define UCR_GP          UCTX_REG(28)
  101 #define UCR_SP          UCTX_REG(29)
  102 #define UCR_S8          UCTX_REG(30)
  103 #define UCR_RA          UCTX_REG(31)
  104 #define UCR_SR          UCTX_REG(32)
  105 #define UCR_MDLO        UCTX_REG(33)
  106 #define UCR_MDHI        UCTX_REG(34)
  107 
  108 #endif  /* !_MACHINE_UCONTEXT_H_ */

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