modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/i386-linux-gnu/sys/ucontext.h

/* Copyright (C) 2001-2018 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/>.  */

#ifndef _SYS_UCONTEXT_H
#define _SYS_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;
} 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;
} ucontext_t;

#endif				/* !__x86_64__ */

#undef __ctx

#endif				/* sys/ucontext.h */