/usr/include/xenomai/asm-powerpc/bits/shadow.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.
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 | /*
* 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_BITS_SHADOW_H
#define _XENO_ASM_POWERPC_BITS_SHADOW_H
#ifndef __KERNEL__
#error "Pure kernel header included from user-space!"
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
#include <asm/cache.h>
#else
#include <asm/cacheflush.h>
#endif
static inline void xnarch_init_shadow_tcb(xnarchtcb_t * tcb,
struct xnthread *thread,
const char *name)
{
struct task_struct *task = current;
tcb->user_task = task;
tcb->active_task = NULL;
tcb->tsp = &task->thread;
tcb->mm = task->mm;
tcb->active_mm = NULL;
#ifdef CONFIG_XENO_HW_UNLOCKED_SWITCH
tcb->tip = task_thread_info(task);
#endif
#ifdef CONFIG_XENO_HW_FPU
tcb->user_fpu_owner = task;
tcb->fpup = &task->thread;
#endif /* CONFIG_XENO_HW_FPU */
tcb->entry = NULL;
tcb->cookie = NULL;
tcb->self = thread;
tcb->imask = 0;
tcb->name = name;
}
static inline int xnarch_local_syscall(struct pt_regs *regs)
{
return -ENOSYS;
}
#define xnarch_schedule_tail(prev) do { } while(0)
#ifdef XNARCH_HAVE_MAYDAY
static inline void xnarch_setup_mayday_page(void *page)
{
/*
* We want this code to appear at the top of the MAYDAY page:
*
* 3c 00 0b 00 lis r0,mux_code@h
* 60 00 02 2b ori r0,r0,mux_code@l
* 44 00 00 02 sc
* 00 b0 0b 00 .long 0x00b00b00 <illegal insn>
*
* We don't mess with CCR here, so no need to save/restore it
* in handle/fixup code.
*/
u32 mux, insn[4];
mux = __xn_mux_code(0, __xn_sys_mayday);
insn[0] = 0x3c000000 | (mux >> 16);
insn[1] = 0x60000000 | (mux & 0xffff);
insn[2] = 0x44000002;
insn[3] = 0x00b00b00;
memcpy(page, insn, sizeof(insn));
flush_dcache_range((unsigned long)page,
(unsigned long)page + sizeof(insn));
}
static inline void xnarch_call_mayday(struct task_struct *p)
{
rthal_return_intercept(p);
}
static inline void xnarch_handle_mayday(struct xnarchtcb *tcb,
struct pt_regs *regs,
unsigned long tramp)
{
tcb->mayday.nip = regs->nip;
tcb->mayday.r0 = regs->gpr[0];
regs->nip = tramp;
}
static inline void xnarch_fixup_mayday(struct xnarchtcb *tcb,
struct pt_regs *regs)
{
regs->nip = tcb->mayday.nip;
regs->gpr[0] = tcb->mayday.r0;
}
#endif /* XNARCH_HAVE_MAYDAY */
#endif /* !_XENO_ASM_POWERPC_BITS_SHADOW_H */
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