196 lines
6.0 KiB
C
196 lines
6.0 KiB
C
/*-
|
|
* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_GLOBALS_H_
|
|
#define _MACHINE_GLOBALS_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#define GLOBAL_LVALUE(name, type) \
|
|
(*(type *)_global_ptr_##name())
|
|
|
|
#define GLOBAL_RVALUE(name, type) \
|
|
((type)_global_##name())
|
|
|
|
/* non-volatile version */
|
|
#define GLOBAL_LVALUE_NV(name, type) \
|
|
(*(type *)_global_ptr_##name##_nv())
|
|
|
|
#define GLOBAL_RVALUE_NV(name, type) \
|
|
((type)_global_##name##_nv())
|
|
|
|
#define GLOBAL_FUNC(name) \
|
|
static __inline void *_global_ptr_##name(void) { \
|
|
void *val; \
|
|
__asm __volatile("movl $gd_" #name ",%0;" \
|
|
"addl %%fs:globaldata,%0" : "=r" (val)); \
|
|
return (val); \
|
|
} \
|
|
static __inline void *_global_ptr_##name##_nv(void) { \
|
|
void *val; \
|
|
__asm("movl $gd_" #name ",%0;" \
|
|
"addl %%fs:globaldata,%0" : "=r" (val)); \
|
|
return (val); \
|
|
} \
|
|
static __inline int _global_##name(void) { \
|
|
int val; \
|
|
__asm __volatile("movl %%fs:gd_" #name ",%0" : "=r" (val)); \
|
|
return (val); \
|
|
} \
|
|
static __inline int _global_##name##_nv(void) { \
|
|
int val; \
|
|
__asm("movl %%fs:gd_" #name ",%0" : "=r" (val)); \
|
|
return (val); \
|
|
} \
|
|
static __inline void _global_##name##_set(int val) { \
|
|
__asm __volatile("movl %0,%%fs:gd_" #name : : "r" (val)); \
|
|
} \
|
|
static __inline void _global_##name##_set_nv(int val) { \
|
|
__asm("movl %0,%%fs:gd_" #name : : "r" (val)); \
|
|
}
|
|
|
|
static __inline int
|
|
_global_globaldata(void)
|
|
{
|
|
int val;
|
|
__asm("movl %%fs:globaldata,%0" : "=r" (val));
|
|
return (val);
|
|
}
|
|
|
|
#if defined(SMP) || defined(KLD_MODULE)
|
|
/*
|
|
* The following set of macros works for UP kernel as well, but for maximum
|
|
* performance we allow the global variables to be accessed directly. On the
|
|
* other hand, kernel modules should always use these macros to maintain
|
|
* portability between UP and SMP kernels.
|
|
*/
|
|
#define curproc GLOBAL_RVALUE_NV(curproc, struct proc *)
|
|
#define curpcb GLOBAL_RVALUE_NV(curpcb, struct pcb *)
|
|
#define npxproc GLOBAL_RVALUE_NV(npxproc, struct proc *)
|
|
#define idleproc GLOBAL_RVALUE_NV(idleproc, struct proc *)
|
|
#define common_tss GLOBAL_LVALUE(common_tss, struct i386tss)
|
|
#define switchtime GLOBAL_LVALUE(switchtime, struct timeval)
|
|
#define switchticks GLOBAL_LVALUE(switchticks, int)
|
|
#define intr_nesting_level GLOBAL_RVALUE(intr_nesting_level, u_char)
|
|
|
|
#define common_tssd GLOBAL_LVALUE(common_tssd, struct segment_descriptor)
|
|
#define tss_gdt GLOBAL_LVALUE(tss_gdt, struct segment_descriptor *)
|
|
#define astpending GLOBAL_RVALUE(astpending, u_int)
|
|
|
|
#ifdef USER_LDT
|
|
#define currentldt GLOBAL_RVALUE(currentldt, int)
|
|
#endif
|
|
|
|
#ifdef SMP
|
|
#define cpuid GLOBAL_RVALUE(cpuid, u_int)
|
|
#define other_cpus GLOBAL_LVALUE(other_cpus, u_int)
|
|
#define inside_intr GLOBAL_LVALUE(inside_intr, int)
|
|
#define prv_CMAP1 GLOBAL_LVALUE(prv_CMAP1, pt_entry_t *)
|
|
#define prv_CMAP2 GLOBAL_LVALUE(prv_CMAP2, pt_entry_t *)
|
|
#define prv_CMAP3 GLOBAL_LVALUE(prv_CMAP3, pt_entry_t *)
|
|
#define prv_PMAP1 GLOBAL_LVALUE(prv_PMAP1, pt_entry_t *)
|
|
#define prv_CADDR1 GLOBAL_RVALUE(prv_CADDR1, caddr_t)
|
|
#define prv_CADDR2 GLOBAL_RVALUE(prv_CADDR2, caddr_t)
|
|
#define prv_CADDR3 GLOBAL_RVALUE(prv_CADDR3, caddr_t)
|
|
#define prv_PADDR1 GLOBAL_RVALUE(prv_PADDR1, unsigned *)
|
|
#endif
|
|
|
|
#define witness_spin_check GLOBAL_RVALUE(witness_spin_check, int)
|
|
|
|
#else /* !(SMP || KLD_MODULE) */
|
|
|
|
extern u_int astpending;
|
|
extern struct i386tss common_tss;
|
|
extern struct segment_descriptor common_tssd;
|
|
extern struct pcb *curpcb; /* Our current running pcb. */
|
|
extern struct proc *curproc; /* Current running proc. */
|
|
extern struct proc *idleproc; /* Current idle proc. */
|
|
extern u_char intr_nesting_level;
|
|
extern struct proc *npxproc;
|
|
extern int switchticks; /* `ticks' at last context switch. */
|
|
extern struct timeval switchtime; /* Uptime at last context switch. */
|
|
extern struct segment_descriptor *tss_gdt;
|
|
extern int witness_spin_check;
|
|
|
|
#endif /* SMP || KLD_MODULE */
|
|
|
|
GLOBAL_FUNC(curproc)
|
|
GLOBAL_FUNC(astpending)
|
|
GLOBAL_FUNC(curpcb)
|
|
GLOBAL_FUNC(npxproc)
|
|
GLOBAL_FUNC(idleproc)
|
|
GLOBAL_FUNC(common_tss)
|
|
GLOBAL_FUNC(switchtime)
|
|
GLOBAL_FUNC(switchticks)
|
|
GLOBAL_FUNC(intr_nesting_level)
|
|
|
|
GLOBAL_FUNC(common_tssd)
|
|
GLOBAL_FUNC(tss_gdt)
|
|
|
|
/* XXX */
|
|
#ifdef KTR_PERCPU
|
|
GLOBAL_FUNC(ktr_idx)
|
|
GLOBAL_FUNC(ktr_buf)
|
|
GLOBAL_FUNC(ktr_buf_data)
|
|
#endif
|
|
|
|
#ifdef USER_LDT
|
|
GLOBAL_FUNC(currentldt)
|
|
#endif
|
|
|
|
#ifdef SMP
|
|
GLOBAL_FUNC(cpuid)
|
|
GLOBAL_FUNC(other_cpus)
|
|
GLOBAL_FUNC(inside_intr)
|
|
GLOBAL_FUNC(prv_CMAP1)
|
|
GLOBAL_FUNC(prv_CMAP2)
|
|
GLOBAL_FUNC(prv_CMAP3)
|
|
GLOBAL_FUNC(prv_PMAP1)
|
|
GLOBAL_FUNC(prv_CADDR1)
|
|
GLOBAL_FUNC(prv_CADDR2)
|
|
GLOBAL_FUNC(prv_CADDR3)
|
|
GLOBAL_FUNC(prv_PADDR1)
|
|
#endif
|
|
|
|
GLOBAL_FUNC(witness_spin_check)
|
|
|
|
#ifdef SMP
|
|
#define GLOBALDATA GLOBAL_RVALUE(globaldata, struct globaldata *)
|
|
#else
|
|
#define GLOBALDATA (&globaldata)
|
|
#endif
|
|
|
|
#define CURTHD curproc
|
|
#define CURPROC curproc
|
|
|
|
#define PCPU_SET(name, value) (_global_##name##_set((int)value))
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_GLOBALS_H_ */
|