/usr/include/xenomai/asm-x86/wrappers_32.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) 2005 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_X86_WRAPPERS_32_H
#define _XENO_ASM_X86_WRAPPERS_32_H
#define _XENO_ASM_X86_WRAPPERS_H
#ifndef __KERNEL__
#error "Pure kernel header included from user-space!"
#endif
#include <asm-generic/xenomai/wrappers.h> /* Read the generic portion. */
#include <linux/interrupt.h>
#include <asm/processor.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
#define tsk_used_math(task) ((task)->used_math)
#define set_stopped_child_used_math(task) ((task)->used_math = 1)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
#define CONFIG_MMU 1
#define wrap_phys_mem_prot(filp,pfn,size,prot) (prot)
#define wrap_range_ok(task,addr,size) ({ \
unsigned long flag,sum; \
asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \
:"=&r" (flag), "=r" (sum) \
:"1" (addr),"g" ((int)(size)),"g" ((task)->addr_limit.seg)); \
flag == 0; })
#define wrap_test_fpu_used(task) \
((task)->flags & PF_USEDFPU)
#define wrap_set_fpu_used(task) \
do { \
(task)->flags |= PF_USEDFPU; \
} while(0)
#define wrap_clear_fpu_used(task) \
do { \
(task)->flags &= ~PF_USEDFPU; \
} while(0)
/* Since the job is done in the vanilla __switch_to() we call, the
following routine is a nop on 2.4 kernels. */
#define wrap_switch_iobitmap(p,cpu) do { } while(0)
#define wrap_strncpy_from_user(dstP,srcP,n) __strncpy_from_user(dstP,srcP,n)
/**
* fls - find last bit set
* @x: the word to search
*
* This is defined the same way as
* the libc and compiler builtin ffs routines, therefore
* differs in spirit from ffz (man ffs).
*/
static inline int fls(int x)
{
int r;
__asm__("bsrl %1,%0\n\t"
"jnz 1f\n\t"
"movl $-1,%0\n"
"1:" : "=r" (r) : "rm" (x));
return r+1;
}
typedef unsigned long phys_addr_t;
typedef phys_addr_t resource_size_t;
#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) */
#define wrap_phys_mem_prot(filp,pfn,size,prot) (prot)
#define wrap_range_ok(task,addr,size) ({ \
unsigned long flag,sum; \
asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \
:"=&r" (flag), "=r" (sum) \
:"1" (addr),"g" ((int)(size)),"g" (task_thread_info(task)->addr_limit.seg)); \
flag == 0; })
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0)
#ifndef CONFIG_X86_WP_WORKS_OK
#error "Xenomai has to rely on the WP bit, CONFIG_M486 or better required"
#endif /* CONFIG_X86_WP_WORKS_OK */
#endif /* Linux < 3.8.0 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)
#ifdef TS_USEDFPU
#define wrap_test_fpu_used(task) \
(task_thread_info(task)->status & TS_USEDFPU)
#define wrap_set_fpu_used(task) \
do { \
task_thread_info(task)->status |= TS_USEDFPU; \
} while(0)
#define wrap_clear_fpu_used(task) \
do { \
task_thread_info(task)->status &= ~TS_USEDFPU; \
} while(0)
#else /* !defined(TS_USEDFPU) */
#define wrap_test_fpu_used(task) ((task)->thread.has_fpu)
#define wrap_set_fpu_used(task) \
do { \
(task)->thread.has_fpu = 1; \
} while(0)
#define wrap_clear_fpu_used(task) \
do { \
(task)->thread.has_fpu = 0; \
} while(0)
#endif /* !defined(TS_USEDFPU) */
#else /* Linux >= 3.4.0 */
#include <asm/i387.h>
#include <asm/fpu-internal.h>
#define wrap_test_fpu_used(task) __thread_has_fpu(task)
#define wrap_set_fpu_used(task) __thread_set_has_fpu(task)
#define wrap_clear_fpu_used(task) __thread_clear_has_fpu(task)
#endif /* Linux >= 3.4.0 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
#define wrap_iobitmap_base(tss) (tss)->io_bitmap_base
#else
#define wrap_iobitmap_base(tss) (tss)->x86_tss.io_bitmap_base
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
static inline void wrap_switch_iobitmap(struct task_struct *p, int cpu)
{
struct thread_struct *thread = &p->thread;
if (thread->io_bitmap_ptr) {
struct tss_struct *tss = &per_cpu(init_tss, cpu);
if (wrap_iobitmap_base(tss) == INVALID_IO_BITMAP_OFFSET_LAZY) {
memcpy(tss->io_bitmap, thread->io_bitmap_ptr, thread->io_bitmap_max);
if (thread->io_bitmap_max < tss->io_bitmap_max)
memset((char *) tss->io_bitmap +
thread->io_bitmap_max, 0xff,
tss->io_bitmap_max - thread->io_bitmap_max);
tss->io_bitmap_max = thread->io_bitmap_max;
wrap_iobitmap_base(tss) = IO_BITMAP_OFFSET;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
tss->io_bitmap_owner = thread;
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15) */
}
}
}
#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30) */
static inline void wrap_switch_iobitmap(struct task_struct *p, int cpu)
{
/* I/O bitmap is eagerly switched in __switch_to() */
}
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30) */
#define wrap_strncpy_from_user(dstP,srcP,n) rthal_strncpy_from_user(dstP,srcP,n)
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
#define rthal_irq_desc_status(irq) (rthal_irq_descp(irq)->status)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
#define rthal_irq_chip_enable(irq) \
({ \
int __err__ = 0; \
if (rthal_irq_descp(irq)->handler == NULL) \
__err__ = -ENODEV; \
else \
rthal_irq_descp(irq)->handler->enable(irq); \
__err__; \
})
#define rthal_irq_chip_disable(irq) \
({ \
int __err__ = 0; \
if (rthal_irq_descp(irq)->handler == NULL) \
__err__ = -ENODEV; \
else \
rthal_irq_descp(irq)->handler->disable(irq); \
__err__; \
})
typedef irqreturn_t (*rthal_irq_host_handler_t)(int irq,
void *dev_id,
struct pt_regs *regs);
#define DECLARE_LINUX_IRQ_HANDLER(fn, irq, dev_id) \
irqreturn_t fn(int irq, void *dev_id, struct pt_regs *regs)
#define rthal_irq_chip_end(irq) rthal_irq_chip_enable(irq)
#else /* >= 2.6.19 */
#if !defined(CONFIG_GENERIC_HARDIRQS) \
|| LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
#define rthal_irq_chip_enable(irq) ({ rthal_irq_descp(irq)->chip->unmask(irq); 0; })
#define rthal_irq_chip_disable(irq) ({ rthal_irq_descp(irq)->chip->mask(irq); 0; })
#endif
#define rthal_irq_chip_end(irq) ({ rthal_irq_descp(irq)->ipipe_end(irq, rthal_irq_descp(irq)); 0; })
typedef irq_handler_t rthal_irq_host_handler_t;
#define DECLARE_LINUX_IRQ_HANDLER(fn, irq, dev_id) \
irqreturn_t fn(int irq, void *dev_id)
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25)
#define x86reg_origax orig_ax
#define x86reg_ax ax
#define x86reg_bx bx
#define x86reg_cx cx
#define x86reg_dx dx
#define x86reg_si si
#define x86reg_di di
#define x86reg_sp sp
#define x86reg_bp bp
#define x86reg_ip ip
#else
#define x86reg_origax orig_eax
#define x86reg_ax eax
#define x86reg_bx ebx
#define x86reg_cx ecx
#define x86reg_dx edx
#define x86reg_si esi
#define x86reg_di edi
#define x86reg_sp esp
#define x86reg_bp ebp
#define x86reg_ip eip
#endif
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,25)
typedef union i387_union x86_fpustate;
#define x86_fpustate_ptr(t) (&(t)->i387)
#elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
typedef union thread_xstate x86_fpustate;
#define x86_fpustate_ptr(t) ((t)->xstate)
#else /* 2.6.35 and above */
typedef union thread_xstate x86_fpustate;
#define x86_fpustate_ptr(t) ((t)->fpu.state)
#endif
#endif /* _XENO_ASM_X86_WRAPPERS_32_H */
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