mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
139 lines
3.0 KiB
C
139 lines
3.0 KiB
C
/* Copyright (C) 1997-2020 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* System V/i386 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>
|
|
|
|
|
|
/* Type for general register. */
|
|
typedef int greg_t;
|
|
|
|
/* Number of general registers. */
|
|
#define __NGREG 19
|
|
#ifdef __USE_MISC
|
|
# define NGREG __NGREG
|
|
#endif
|
|
|
|
/* Container for all general registers. */
|
|
typedef greg_t gregset_t[__NGREG];
|
|
|
|
#ifdef __USE_MISC
|
|
/* Number of each register is the `gregset_t' array. */
|
|
enum
|
|
{
|
|
REG_GS = 0,
|
|
# define REG_GS REG_GS
|
|
REG_FS,
|
|
# define REG_FS REG_FS
|
|
REG_ES,
|
|
# define REG_ES REG_ES
|
|
REG_DS,
|
|
# define REG_DS REG_DS
|
|
REG_EDI,
|
|
# define REG_EDI REG_EDI
|
|
REG_ESI,
|
|
# define REG_ESI REG_ESI
|
|
REG_EBP,
|
|
# define REG_EBP REG_EBP
|
|
REG_ESP,
|
|
# define REG_ESP REG_ESP
|
|
REG_EBX,
|
|
# define REG_EBX REG_EBX
|
|
REG_EDX,
|
|
# define REG_EDX REG_EDX
|
|
REG_ECX,
|
|
# define REG_ECX REG_ECX
|
|
REG_EAX,
|
|
# define REG_EAX REG_EAX
|
|
REG_TRAPNO,
|
|
# define REG_TRAPNO REG_TRAPNO
|
|
REG_ERR,
|
|
# define REG_ERR REG_ERR
|
|
REG_EIP,
|
|
# define REG_EIP REG_EIP
|
|
REG_CS,
|
|
# define REG_CS REG_CS
|
|
REG_EFL,
|
|
# define REG_EFL REG_EFL
|
|
REG_UESP,
|
|
# define REG_UESP REG_UESP
|
|
REG_SS
|
|
# define REG_SS REG_SS
|
|
};
|
|
#endif
|
|
|
|
#ifdef __USE_MISC
|
|
# define __ctx(fld) fld
|
|
# define __ctxt(tag) tag
|
|
#else
|
|
# define __ctx(fld) __ ## fld
|
|
# define __ctxt(tag) /* Empty. */
|
|
#endif
|
|
|
|
/* Structure to describe FPU registers. */
|
|
typedef struct
|
|
{
|
|
union
|
|
{
|
|
struct __ctxt(fpchip_state)
|
|
{
|
|
int __ctx(state)[27];
|
|
int __ctx(status);
|
|
} __ctx(fpchip_state);
|
|
|
|
struct __ctxt(fp_emul_space)
|
|
{
|
|
char __ctx(fp_emul)[246];
|
|
char __ctx(fp_epad)[2];
|
|
} __ctx(fp_emul_space);
|
|
|
|
int __ctx(f_fpregs)[62];
|
|
} __ctx(fp_reg_set);
|
|
|
|
long int __ctx(f_wregs)[33];
|
|
} fpregset_t;
|
|
|
|
/* Context to describe whole processor state. */
|
|
typedef struct
|
|
{
|
|
gregset_t __ctx(gregs);
|
|
fpregset_t __ctx(fpregs);
|
|
} mcontext_t;
|
|
|
|
/* Userlevel context. */
|
|
typedef struct ucontext_t
|
|
{
|
|
unsigned long int __ctx(uc_flags);
|
|
struct ucontext_t *uc_link;
|
|
sigset_t uc_sigmask;
|
|
stack_t uc_stack;
|
|
mcontext_t uc_mcontext;
|
|
long int __glibc_reserved1[5];
|
|
} ucontext_t;
|
|
|
|
#undef __ctx
|
|
#undef __ctxt
|
|
|
|
#endif /* sys/ucontext.h */
|