/usr/include/xenomai/asm-x86/system_64.h is in libxenomai-dev 2.5.5.2-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2001-2007 Philippe Gerum <rpm@xenomai.org>.
* Copyright (C) 2004-2006 Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>.
*
* Xenomai is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Xenomai 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Xenomai; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _XENO_ASM_X86_SYSTEM_64_H
#define _XENO_ASM_X86_SYSTEM_64_H
#define _XENO_ASM_X86_SYSTEM_H
#ifdef __KERNEL__
#include <linux/types.h>
#include <linux/ptrace.h>
#include <asm-generic/xenomai/system.h>
#define XNARCH_THREAD_STACKSZ 8192
#define xnarch_stack_size(tcb) ((tcb)->stacksize)
#define xnarch_stack_base(tcb) ((tcb)->stackbase)
#define xnarch_stack_end(tcb) ((caddr_t)(tcb)->stackbase - (tcb)->stacksize)
#define xnarch_fpu_ptr(tcb) ((tcb)->fpup)
#define xnarch_user_task(tcb) ((tcb)->user_task)
#define xnarch_user_pid(tcb) ((tcb)->user_task->pid)
struct xnthread;
struct task_struct;
typedef struct xnarchtcb { /* Per-thread arch-dependent block */
unsigned long *rspp; /* Pointer to rsp backup (&rsp or &user->thread.rsp). */
unsigned long *ripp; /* Pointer to rip backup (&rip or &user->thread.rip). */
struct task_struct *user_task; /* Shadowed user-space task */
struct task_struct *active_task; /* Active user-space task */
x86_fpustate *fpup; /* &i387 or &user->thread.i387 */
#ifdef XNARCH_HAVE_MAYDAY
struct {
unsigned long eip;
unsigned long eax;
unsigned long r9;
} mayday;
#endif
/* Private context for kernel threads. */
x86_fpustate i387;
unsigned long rsp;
unsigned long rip;
#ifdef CONFIG_CC_STACKPROTECTOR
unsigned long canary;
#endif
/* FPU context bits for the root thread. */
unsigned long is_root: 1;
unsigned long ts_usedfpu: 1;
unsigned long cr0_ts: 1;
unsigned stacksize; /* Aligned size of stack (bytes) */
unsigned long *stackbase; /* Stack space */
/* Init block */
struct xnthread *self;
int imask;
const char *name;
void (*entry)(void *cookie);
void *cookie;
} xnarchtcb_t;
typedef struct xnarch_fltinfo {
unsigned vector;
long errcode;
struct pt_regs *regs;
} xnarch_fltinfo_t;
#define xnarch_fault_trap(fi) ((fi)->vector)
#define xnarch_fault_code(fi) ((fi)->errcode)
#define xnarch_fault_pc(fi) ((fi)->regs->x86reg_ip)
/* fault is caused by use FPU while FPU disabled. */
#define xnarch_fault_fpu_p(fi) ((fi)->vector == 7)
/* The following predicates are only usable over a regular Linux stack
context. */
#define xnarch_fault_pf_p(fi) ((fi)->vector == 14)
#define xnarch_fault_bp_p(fi) ((current->ptrace & PT_PTRACED) && \
((fi)->vector == 1 || (fi)->vector == 3))
#define xnarch_fault_notify(fi) (!xnarch_fault_bp_p(fi))
#ifdef __cplusplus
extern "C" {
#endif
static inline void *xnarch_alloc_host_mem(u_long bytes)
{
if (bytes > 128*1024)
return vmalloc(bytes);
return kmalloc(bytes,GFP_KERNEL);
}
static inline void xnarch_free_host_mem(void *chunk, u_long bytes)
{
if (bytes > 128*1024)
vfree(chunk);
else
kfree(chunk);
}
static inline void *xnarch_alloc_stack_mem(u_long bytes)
{
return kmalloc(bytes, GFP_KERNEL);
}
static inline void xnarch_free_stack_mem(void *chunk, u_long bytes)
{
kfree(chunk);
}
#ifdef __cplusplus
}
#endif
#else /* !__KERNEL__ */
#include <nucleus/system.h>
#include <bits/local_lim.h>
#endif /* __KERNEL__ */
#endif /* !_XENO_ASM_X86_SYSTEM_64_H */
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