FM / sys

/usr/include/sys

Name	Size	Mode	Actions
platform/	-	0755	rm
acct.h	3302	0644	edit dl rm
auxv.h	1260	0644	edit dl rm
bitypes.h	86	0644	edit dl rm
cdefs.h	26257	0644	edit dl rm
debugreg.h	3576	0644	edit dl rm
dir.h	922	0644	edit dl rm
elf.h	1024	0644	edit dl rm
epoll.h	5076	0644	edit dl rm
errno.h	19	0644	edit dl rm
eventfd.h	1400	0644	edit dl rm
fanotify.h	1292	0644	edit dl rm
fcntl.h	19	0644	edit dl rm
file.h	1675	0644	edit dl rm
fsuid.h	1188	0644	edit dl rm
gmon.h	6230	0644	edit dl rm
gmon_out.h	2636	0644	edit dl rm
inotify.h	3901	0644	edit dl rm
io.h	5086	0644	edit dl rm
ioctl.h	2027	0644	edit dl rm
ipc.h	1462	0644	edit dl rm
kd.h	1112	0644	edit dl rm
klog.h	1204	0644	edit dl rm
mman.h	5552	0644	edit dl rm
mount.h	5706	0644	edit dl rm
msg.h	2623	0644	edit dl rm
mtio.h	11163	0644	edit dl rm
param.h	3149	0644	edit dl rm
pci.h	923	0644	edit dl rm
perm.h	1127	0644	edit dl rm
personality.h	2723	0644	edit dl rm
poll.h	3025	0644	edit dl rm
prctl.h	1795	0644	edit dl rm
procfs.h	4338	0644	edit dl rm
profil.h	1959	0644	edit dl rm
ptrace.h	6126	0644	edit dl rm
queue.h	19539	0644	edit dl rm
quota.h	5173	0644	edit dl rm
random.h	1471	0644	edit dl rm
raw.h	1182	0644	edit dl rm
reboot.h	1633	0644	edit dl rm
reg.h	1827	0644	edit dl rm
resource.h	4034	0644	edit dl rm
rseq.h	6405	0644	edit dl rm
select.h	5039	0644	edit dl rm
sem.h	2660	0644	edit dl rm
sendfile.h	1806	0644	edit dl rm
shm.h	2131	0644	edit dl rm
signal.h	20	0644	edit dl rm
signalfd.h	1714	0644	edit dl rm
single_threaded.h	1182	0644	edit dl rm
socket.h	12382	0644	edit dl rm
socketvar.h	141	0644	edit dl rm
soundcard.h	29	0644	edit dl rm
stat.h	13735	0644	edit dl rm
statfs.h	2094	0644	edit dl rm
statvfs.h	2821	0644	edit dl rm
swap.h	1593	0644	edit dl rm
syscall.h	1256	0644	edit dl rm
sysinfo.h	1518	0644	edit dl rm
syslog.h	7786	0644	edit dl rm
sysmacros.h	2103	0644	edit dl rm
termios.h	74	0644	edit dl rm
time.h	9139	0644	edit dl rm
timeb.h	1155	0644	edit dl rm
timerfd.h	2583	0644	edit dl rm
times.h	1597	0644	edit dl rm
timex.h	2839	0644	edit dl rm
ttychars.h	2499	0644	edit dl rm
ttydefaults.h	3568	0644	edit dl rm
types.h	5713	0644	edit dl rm
ucontext.h	5842	0644	edit dl rm
uio.h	6796	0644	edit dl rm
un.h	1453	0644	edit dl rm
unistd.h	20	0644	edit dl rm
user.h	5208	0644	edit dl rm
utsname.h	2481	0644	edit dl rm
vfs.h	161	0644	edit dl rm
vlimit.h	1880	0644	edit dl rm
vm86.h	1199	0644	edit dl rm
vt.h	22	0644	edit dl rm
wait.h	6233	0644	edit dl rm
xattr.h	4275	0644	edit dl rm

Edit: /usr/include/sys/ucontext.h (5842B)

/* Copyright (C) 2001-2021 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 _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;
    __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;

#endif /* !__x86_64__ */

#undef __ctx

#endif /* sys/ucontext.h */

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