diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/sys/ucontext.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/sys/ucontext.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/sys/ucontext.h b/sysdeps/unix/sysv/linux/x86_64/sys/ucontext.h new file mode 100644 index 0000000000..6b69c84db2 --- /dev/null +++ b/sysdeps/unix/sysv/linux/x86_64/sys/ucontext.h @@ -0,0 +1,160 @@ +/* Copyright (C) 2001 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 long int greg_t; + +/* Number of general registers. */ +#define NGREG 27 + +/* Container for all general registers. */ +typedef greg_t gregset_t[NGREG]; + +#ifdef __USE_GNU +/* Number of each register in the `gregset_t' array. */ +enum +{ + REG_GSFS = 0, +# define REG_GSFS REG_GSFS + REG_ESDS, +# define REG_ESDS REG_ESDS + REG_R8, +# define REG_R8 REG_R8 + REG_R9, +# define REG_R9 REG_R9 + REG_R10, +# define REG_R10 REG_R10 + REG_R11, +# define REG_R11 REG_R11 + REG_R12, +# define REG_R12 REG_R12 + REG_R13, +# define REG_R13 REG_R13 + REG_R14, +# define REG_R14 REG_R14 + REG_R15, +# define REG_R15 REG_R15 + REG_RDI, +# define REG_RDI REG_RDI + REG_RSI, +# define REG_RSI REG_RSI + REG_RBP, +# define REG_RBP REG_RBP + REG_RSP, +# define REG_RSP REG_RSP + REG_RBX, +# define REG_RBX REG_RBX + REG_RDX, +# define REG_RDX REG_RDX + REG_RCX, +# define REG_RCX REG_RCX + REG_RAX, +# define REG_RAX REG_RAX + REG_TRAPNO, +# define REG_TRAPNO REG_TRAPNO + REG_ERR, +# define REG_ERR REG_ERR + REG_RIP, +# define REG_RIP REG_RIP + REG_CS, +# define REG_CS REG_CS + REG_EFL, +# define REG_EFL REG_EFL + REG_URSP, +# define REG_URSP REG_URSP + 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_fpxreg +{ + unsigned short int significand[4]; + unsigned short int exponent; + unsigned short int padding[3]; +}; + +struct _libc_xmmreg +{ + unsigned long int element[4]; +}; + +struct _libc_fpstate +{ + /* Regular FPU environment. */ + 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[16]; + unsigned short int status; + unsigned short int magic; + /* FXSR FPU environment. */ + + unsigned long int _fxsr_env[6]; + unsigned long int mxcsr; + unsigned long int reserved; + struct _libc_fpxreg _fxsr_st[8]; + struct _libc_xmmreg _xmm[16]; + unsigned long int padding[32]; +}; + +/* Structure to describe FPU registers. */ +typedef struct _libc_fpstate fpregset_t; + +/* Context to describe whole processor state. */ +typedef struct + { + gregset_t gregs; + 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 */ |