diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86/bits/ucontext.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86/bits/ucontext.h | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/bits/ucontext.h b/sysdeps/unix/sysv/linux/x86/bits/ucontext.h new file mode 100644 index 0000000000..fe5cbae8fc --- /dev/null +++ b/sysdeps/unix/sysv/linux/x86/bits/ucontext.h @@ -0,0 +1,262 @@ +/* Copyright (C) 2001-2020 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/>. */ + +#ifndef _BITS_UCONTEXT_H +#define _BITS_UCONTEXT_H 1 + +#include <features.h> + +#include <bits/types.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 __x86_64__ + +/* Type for general register. */ +__extension__ typedef long long int greg_t; + +/* Number of general registers. */ +#define __NGREG 23 +#ifdef __USE_MISC +# define NGREG __NGREG +#endif + +/* 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_R8 = 0, +# 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_RBX, +# define REG_RBX REG_RBX + REG_RDX, +# define REG_RDX REG_RDX + REG_RAX, +# define REG_RAX REG_RAX + REG_RCX, +# define REG_RCX REG_RCX + REG_RSP, +# define REG_RSP REG_RSP + REG_RIP, +# define REG_RIP REG_RIP + REG_EFL, +# define REG_EFL REG_EFL + REG_CSGSFS, /* Actually short cs, gs, fs, __pad0. */ +# define REG_CSGSFS REG_CSGSFS + REG_ERR, +# define REG_ERR REG_ERR + REG_TRAPNO, +# define REG_TRAPNO REG_TRAPNO + REG_OLDMASK, +# define REG_OLDMASK REG_OLDMASK + REG_CR2 +# define REG_CR2 REG_CR2 +}; +#endif + +struct _libc_fpxreg +{ + unsigned short int __ctx(significand)[4]; + unsigned short int __ctx(exponent); + unsigned short int __glibc_reserved1[3]; +}; + +struct _libc_xmmreg +{ + __uint32_t __ctx(element)[4]; +}; + +struct _libc_fpstate +{ + /* 64-bit FXSAVE format. */ + __uint16_t __ctx(cwd); + __uint16_t __ctx(swd); + __uint16_t __ctx(ftw); + __uint16_t __ctx(fop); + __uint64_t __ctx(rip); + __uint64_t __ctx(rdp); + __uint32_t __ctx(mxcsr); + __uint32_t __ctx(mxcr_mask); + struct _libc_fpxreg _st[8]; + struct _libc_xmmreg _xmm[16]; + __uint32_t __glibc_reserved1[24]; +}; + +/* Structure to describe FPU registers. */ +typedef struct _libc_fpstate *fpregset_t; + +/* Context to describe whole processor state. */ +typedef struct + { + gregset_t __ctx(gregs); + /* Note that fpregs is a pointer. */ + fpregset_t __ctx(fpregs); + __extension__ unsigned long long __reserved1 [8]; +} mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long int __ctx(uc_flags); + struct ucontext_t *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + sigset_t uc_sigmask; + struct _libc_fpstate __fpregs_mem; + __extension__ unsigned long long int __ssp[4]; + } ucontext_t; + +#else /* !__x86_64__ */ + +/* 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_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 __ctx(significand)[4]; + unsigned short int __ctx(exponent); +}; + +struct _libc_fpstate +{ + unsigned long int __ctx(cw); + unsigned long int __ctx(sw); + unsigned long int __ctx(tag); + unsigned long int __ctx(ipoff); + unsigned long int __ctx(cssel); + unsigned long int __ctx(dataoff); + unsigned long int __ctx(datasel); + struct _libc_fpreg _st[8]; + unsigned long int __ctx(status); +}; + +/* Structure to describe FPU registers. */ +typedef struct _libc_fpstate *fpregset_t; + +/* Context to describe whole processor state. */ +typedef struct + { + gregset_t __ctx(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 __ctx(fpregs); + unsigned long int __ctx(oldmask); + unsigned long int __ctx(cr2); + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long int __ctx(uc_flags); + struct ucontext_t *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + sigset_t uc_sigmask; + struct _libc_fpstate __fpregs_mem; + unsigned long int __ssp[4]; + } ucontext_t; + +#endif /* !__x86_64__ */ + +#undef __ctx + +#endif /* bits/ucontext.h */ |