/usr/arm-linux-gnueabihf/include/sys/ucontext.h is in libc6-dev-armhf-cross 2.27-3ubuntu1cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | /* Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
/* System V/ARM ABI compliant context switching support. */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <bits/types/sigset_t.h>
#include <bits/types/stack_t.h>
#ifdef __USE_MISC
# define __ctx(fld) fld
#else
# define __ctx(fld) __ ## fld
#endif
#ifdef __USE_MISC
typedef int greg_t;
/* Number of general registers. */
# define NGREG 18
/* Container for all general registers. */
typedef greg_t gregset_t[NGREG];
/* Number of each register is the `gregset_t' array. */
enum
{
REG_R0 = 0,
# define REG_R0 REG_R0
REG_R1 = 1,
# define REG_R1 REG_R1
REG_R2 = 2,
# define REG_R2 REG_R2
REG_R3 = 3,
# define REG_R3 REG_R3
REG_R4 = 4,
# define REG_R4 REG_R4
REG_R5 = 5,
# define REG_R5 REG_R5
REG_R6 = 6,
# define REG_R6 REG_R6
REG_R7 = 7,
# define REG_R7 REG_R7
REG_R8 = 8,
# define REG_R8 REG_R8
REG_R9 = 9,
# define REG_R9 REG_R9
REG_R10 = 10,
# define REG_R10 REG_R10
REG_R11 = 11,
# define REG_R11 REG_R11
REG_R12 = 12,
# define REG_R12 REG_R12
REG_R13 = 13,
# define REG_R13 REG_R13
REG_R14 = 14,
# define REG_R14 REG_R14
REG_R15 = 15
# define REG_R15 REG_R15
};
struct _libc_fpstate
{
struct
{
unsigned int sign1:1;
unsigned int unused:15;
unsigned int sign2:1;
unsigned int exponent:14;
unsigned int j:1;
unsigned int mantissa1:31;
unsigned int mantissa0:32;
} fpregs[8];
unsigned int fpsr:32;
unsigned int fpcr:32;
unsigned char ftype[8];
unsigned int init_flag;
};
/* Structure to describe FPU registers. */
typedef struct _libc_fpstate fpregset_t;
#endif
/* Context to describe whole processor state. This only describes
the core registers; coprocessor registers get saved elsewhere
(e.g. in uc_regspace, or somewhere unspecified on the stack
during non-RT signal handlers). */
typedef struct
{
unsigned long int __ctx(trap_no);
unsigned long int __ctx(error_code);
unsigned long int __ctx(oldmask);
unsigned long int __ctx(arm_r0);
unsigned long int __ctx(arm_r1);
unsigned long int __ctx(arm_r2);
unsigned long int __ctx(arm_r3);
unsigned long int __ctx(arm_r4);
unsigned long int __ctx(arm_r5);
unsigned long int __ctx(arm_r6);
unsigned long int __ctx(arm_r7);
unsigned long int __ctx(arm_r8);
unsigned long int __ctx(arm_r9);
unsigned long int __ctx(arm_r10);
unsigned long int __ctx(arm_fp);
unsigned long int __ctx(arm_ip);
unsigned long int __ctx(arm_sp);
unsigned long int __ctx(arm_lr);
unsigned long int __ctx(arm_pc);
unsigned long int __ctx(arm_cpsr);
unsigned long int __ctx(fault_address);
} mcontext_t;
/* Userlevel context. */
typedef struct ucontext_t
{
unsigned long __ctx(uc_flags);
struct ucontext_t *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
sigset_t uc_sigmask;
unsigned long __ctx(uc_regspace)[128] __attribute__((__aligned__(8)));
} ucontext_t;
#undef __ctx
#endif /* sys/ucontext.h */
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