/usr/include/xenomai/asm-powerpc/system.h is in libxenomai-dev 2.6.3-2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | /*
* Copyright (C) 2001,2002,2003,2004 Philippe Gerum <rpm@xenomai.org>.
*
* 64-bit PowerPC adoption
* copyright (C) 2005 Taneli Vähäkangas and Heikki Lindholm
*
* 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_POWERPC_SYSTEM_H
#define _XENO_ASM_POWERPC_SYSTEM_H
#ifdef __KERNEL__
#include <linux/ptrace.h>
#include <asm-generic/xenomai/system.h>
#ifdef CONFIG_PPC64
#define XNARCH_THREAD_STACKSZ 8182
#else
#define XNARCH_THREAD_STACKSZ 4096
#endif
#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 */
/* User mode side */
struct task_struct *user_task; /* Shadowed user-space task */
struct task_struct *active_task; /* Active user-space task */
struct thread_struct *tsp; /* Pointer to the active thread struct (&ts or &user->thread). */
struct mm_struct *mm;
struct mm_struct *active_mm;
#ifdef XNARCH_HAVE_MAYDAY
struct {
unsigned long nip;
unsigned long r0;
} mayday;
#endif
/* Kernel mode side */
struct thread_struct ts; /* Holds kernel-based thread context. */
#ifdef CONFIG_XENO_HW_UNLOCKED_SWITCH
struct thread_info *tip; /* Pointer to the active thread info (ti or user->thread_info). */
struct thread_info ti; /* Holds kernel-based thread info */
#endif
#ifdef CONFIG_XENO_HW_FPU
/*
* We only care for basic FPU handling in kernel-space; Altivec
* and SPE are not available to kernel-based nucleus threads.
*/
struct thread_struct *fpup; /* Pointer to the FPU backup container */
struct task_struct *user_fpu_owner;
/*
* Pointer to the FPU owner in userspace:
* - NULL for RT K threads,
* - last_task_used_math for Linux US threads (current or NULL when SMP)
* - current for RT US threads.
*/
#define xnarch_fpu_ptr(tcb) ((tcb)->fpup)
#else /* !CONFIG_XENO_HW_FPU */
#define xnarch_fpu_ptr(tcb) NULL
#endif /* CONFIG_XENO_HW_FPU */
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 exception;
struct pt_regs *regs;
} xnarch_fltinfo_t;
#define xnarch_fault_trap(fi) ((unsigned int)(fi)->regs->trap)
#define xnarch_fault_code(fi) ((fi)->regs->dar)
#define xnarch_fault_pc(fi) ((fi)->regs->nip)
#define xnarch_fault_pc(fi) ((fi)->regs->nip)
/* FIXME: FPU faults ignored by the nanokernel on PPC. */
#define xnarch_fault_fpu_p(fi) (0)
/* The following predicates are only usable over a regular Linux stack
context. */
#define xnarch_fault_pf_p(fi) ((fi)->exception == IPIPE_TRAP_ACCESS)
#ifdef CONFIG_PPC64
#define xnarch_fault_bp_p(fi) ((current->ptrace & PT_PTRACED) && \
((fi)->exception == IPIPE_TRAP_IABR || \
(fi)->exception == IPIPE_TRAP_SSTEP))
#else /* !CONFIG_PPC64 */
#define xnarch_fault_bp_p(fi) ((current->ptrace & PT_PTRACED) && \
((fi)->exception == IPIPE_TRAP_IABR || \
(fi)->exception == IPIPE_TRAP_SSTEP || \
(fi)->exception == IPIPE_TRAP_DEBUG))
#endif /* CONFIG_PPC64 */
#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_POWERPC_SYSTEM_H */
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