/usr/include/xenomai/asm-sh/system.h is in libxenomai-dev 2.6.4+dfsg-1.
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) 2011 Philippe Gerum <rpm@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_SH_SYSTEM_H
#define _XENO_ASM_SH_SYSTEM_H
#ifdef __KERNEL__
#include <linux/ptrace.h>
#include <asm-generic/xenomai/system.h>
#include <asm/system.h>
#include <asm/processor.h>
#define XNARCH_THREAD_STACKSZ 4096
#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_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 */
/* Shadowed user-space task */
struct task_struct *user_task;
/* Active user-space task */
struct task_struct *active_task;
/* Active thread struct (&ts or &user->thread). */
struct thread_struct *tsp;
struct mm_struct *mm;
struct mm_struct *active_mm;
#ifdef XNARCH_HAVE_MAYDAY
struct {
unsigned long pc;
unsigned long r3;
} mayday;
#endif
/* Thread context placeholder for kernel threads. */
struct thread_struct ts;
#ifdef CONFIG_XENO_HW_FPU
/* Pointer to the FPU backup container */
struct thread_struct *fpup;
struct task_struct *user_fpu_owner;
/* Pointer to the FPU owner in userspace. */
#define xnarch_fpu_ptr(tcb) ((tcb)->fpup)
#else /* !CONFIG_XENO_HW_FPU */
#define xnarch_fpu_ptr(tcb) NULL
#endif /* CONFIG_XENO_HW_FPU */
unsigned int stacksize;
unsigned long *stackbase;
struct xnthread *self;
int imask;
const char *name;
void (*entry)(void *cookie);
void *cookie;
} xnarchtcb_t;
typedef struct xnarch_fltinfo {
unsigned int exception;
struct pt_regs *regs;
} xnarch_fltinfo_t;
#define xnarch_fault_trap(fi) ((fi)->exception)
#define xnarch_fault_code(fi) (0)
#define xnarch_fault_pc(fi) ((fi)->regs->pc)
#define xnarch_fault_fpu_p(fi) ((fi)->exception == IPIPE_TRAP_FPUERR)
#define xnarch_fault_pf_p(fi) ((fi)->exception == IPIPE_TRAP_PF)
#define xnarch_fault_bp_p(fi) ((current->ptrace & PT_PTRACED) && \
(fi)->exception == IPIPE_TRAP_BP)
#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_SH_SYSTEM_H */
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