| /* Copyright (C) 1997, 1998, 1999, 2000 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #ifndef _SYS_UCONTEXT_H |
| #define _SYS_UCONTEXT_H 1 |
| |
| #include <features.h> |
| #include <signal.h> |
| |
| /* We need the signal context definitions even if they are not used |
| included in <signal.h>. */ |
| #include <bits/sigcontext.h> |
| |
| |
| /* Type for general register. */ |
| typedef int greg_t; |
| |
| /* Number of general registers. */ |
| #define NGREG 19 |
| |
| /* Container for all general registers. */ |
| typedef greg_t gregset_t[NGREG]; |
| |
| #ifdef __USE_GNU |
| /* 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 |
| |
| /* Definitions taken from the kernel headers. */ |
| struct _libc_fpreg |
| { |
| unsigned short int significand[4]; |
| unsigned short int exponent; |
| }; |
| |
| struct _libc_fpstate |
| { |
| unsigned long int cw; |
| unsigned long int sw; |
| unsigned long int tag; |
| unsigned long int ipoff; |
| unsigned long int cssel; |
| unsigned long int dataoff; |
| unsigned long int datasel; |
| struct _libc_fpreg _st[8]; |
| unsigned long int status; |
| }; |
| |
| /* Structure to describe FPU registers. */ |
| typedef struct _libc_fpstate *fpregset_t; |
| |
| /* Context to describe whole processor state. */ |
| typedef struct |
| { |
| gregset_t gregs; |
| /* Due to Linux's history we have to use a pointer here. The SysV/i386 |
| ABI requires a struct with the values. */ |
| fpregset_t fpregs; |
| unsigned long int oldmask; |
| unsigned long int cr2; |
| } mcontext_t; |
| |
| /* Userlevel context. */ |
| typedef struct ucontext |
| { |
| unsigned long int uc_flags; |
| struct ucontext *uc_link; |
| stack_t uc_stack; |
| mcontext_t uc_mcontext; |
| __sigset_t uc_sigmask; |
| struct _libc_fpstate __fpregs_mem; |
| } ucontext_t; |
| |
| #endif /* sys/ucontext.h */ |
