modernc.org/cc@v1.0.1/v2/headers/linux_arm/usr/include/arm-linux-gnueabihf/sys/ucontext.h (about)

     1  /* Copyright (C) 1998-2016 Free Software Foundation, Inc.
     2     This file is part of the GNU C Library.
     3  
     4     The GNU C Library is free software; you can redistribute it and/or
     5     modify it under the terms of the GNU Lesser General Public
     6     License as published by the Free Software Foundation; either
     7     version 2.1 of the License, or (at your option) any later version.
     8  
     9     The GNU C Library is distributed in the hope that it will be useful,
    10     but WITHOUT ANY WARRANTY; without even the implied warranty of
    11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12     Lesser General Public License for more details.
    13  
    14     You should have received a copy of the GNU Lesser General Public
    15     License along with the GNU C Library.  If not, see
    16     <http://www.gnu.org/licenses/>.  */
    17  
    18  /* System V/ARM ABI compliant context switching support.  */
    19  
    20  #ifndef _SYS_UCONTEXT_H
    21  #define _SYS_UCONTEXT_H	1
    22  
    23  #include <features.h>
    24  #include <signal.h>
    25  
    26  /* We need the signal context definitions even if they are not used
    27     included in <signal.h>.  */
    28  #include <bits/sigcontext.h>
    29  
    30  typedef int greg_t;
    31  
    32  /* Number of general registers.  */
    33  #define NGREG	18
    34  
    35  /* Container for all general registers.  */
    36  typedef greg_t gregset_t[NGREG];
    37  
    38  /* Number of each register is the `gregset_t' array.  */
    39  enum {
    40  	REG_R0 = 0,
    41  #define REG_R0	REG_R0
    42  	REG_R1 = 1,
    43  #define REG_R1	REG_R1
    44  	REG_R2 = 2,
    45  #define REG_R2	REG_R2
    46  	REG_R3 = 3,
    47  #define REG_R3	REG_R3
    48  	REG_R4 = 4,
    49  #define REG_R4	REG_R4
    50  	REG_R5 = 5,
    51  #define REG_R5	REG_R5
    52  	REG_R6 = 6,
    53  #define REG_R6	REG_R6
    54  	REG_R7 = 7,
    55  #define REG_R7	REG_R7
    56  	REG_R8 = 8,
    57  #define REG_R8	REG_R8
    58  	REG_R9 = 9,
    59  #define REG_R9	REG_R9
    60  	REG_R10 = 10,
    61  #define REG_R10	REG_R10
    62  	REG_R11 = 11,
    63  #define REG_R11	REG_R11
    64  	REG_R12 = 12,
    65  #define REG_R12	REG_R12
    66  	REG_R13 = 13,
    67  #define REG_R13	REG_R13
    68  	REG_R14 = 14,
    69  #define REG_R14	REG_R14
    70  	REG_R15 = 15
    71  #define REG_R15	REG_R15
    72  };
    73  
    74  struct _libc_fpstate {
    75  	struct {
    76  		unsigned int sign1:1;
    77  		unsigned int unused:15;
    78  		unsigned int sign2:1;
    79  		unsigned int exponent:14;
    80  		unsigned int j:1;
    81  		unsigned int mantissa1:31;
    82  		unsigned int mantissa0:32;
    83  	} fpregs[8];
    84  	unsigned int fpsr:32;
    85  	unsigned int fpcr:32;
    86  	unsigned char ftype[8];
    87  	unsigned int init_flag;
    88  };
    89  /* Structure to describe FPU registers.  */
    90  typedef struct _libc_fpstate fpregset_t;
    91  
    92  /* Context to describe whole processor state.  This only describes
    93     the core registers; coprocessor registers get saved elsewhere
    94     (e.g. in uc_regspace, or somewhere unspecified on the stack
    95     during non-RT signal handlers).  */
    96  typedef struct sigcontext mcontext_t;
    97  
    98  /* Userlevel context.  */
    99  typedef struct ucontext {
   100  	unsigned long uc_flags;
   101  	struct ucontext *uc_link;
   102  	stack_t uc_stack;
   103  	mcontext_t uc_mcontext;
   104  	__sigset_t uc_sigmask;
   105  	unsigned long uc_regspace[128] __attribute__ ((__aligned__(8)));
   106  } ucontext_t;
   107  
   108  #endif				/* sys/ucontext.h */