/usr/include/xenomai/asm-x86/system_32.h is in libxenomai-dev 2.6.2.1-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | /*
* Copyright (C) 2001,2002,2003 Philippe Gerum <rpm@xenomai.org>.
* Copyright (C) 2004 The HYADES Project (http://www.hyades-itea.org).
* Copyright (C) 2004,2005 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_32_H
#define _XENO_ASM_X86_SYSTEM_32_H
#define _XENO_ASM_X86_SYSTEM_H
#ifdef __KERNEL__
#include <linux/ptrace.h>
#include <asm-generic/xenomai/system.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_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 */
/* Kernel mode side */
x86_fpustate fpuenv __attribute__ ((aligned (16))); /* FPU backup area */
unsigned stacksize; /* Aligned size of stack (bytes) */
unsigned long *stackbase; /* Stack space */
unsigned long esp; /* Saved ESP for kernel-based threads */
unsigned long eip; /* Saved EIP for kernel-based threads */
#ifdef XNARCH_HAVE_MAYDAY
struct {
unsigned long eip;
unsigned long eax;
unsigned long esp;
} mayday;
#endif
/* User mode side */
struct task_struct *user_task; /* Shadowed user-space task */
struct task_struct *active_task; /* Active user-space task */
unsigned long *espp; /* Pointer to ESP backup area (&esp or &user->thread.esp) */
unsigned long *eipp; /* Pointer to EIP backup area (&eip or &user->thread.eip) */
x86_fpustate *fpup; /* Pointer to the FPU backup area (&fpuenv or &user->thread.i387.f[x]save */
/* FPU context bits for root thread. */
unsigned is_root: 1;
unsigned ts_usedfpu: 1;
unsigned cr0_ts: 1;
} 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);
}
static inline int xnarch_shadow_p (xnarchtcb_t *tcb, struct task_struct *task)
{
return tcb->espp == &task->thread.x86reg_sp;
}
#ifdef __cplusplus
}
#endif
#else /* !__KERNEL__ */
#include <nucleus/system.h>
#include <bits/local_lim.h>
#endif /* __KERNEL__ */
#endif /* !_XENO_ASM_X86_SYSTEM_32_H */
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