src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/uptcpip/src/include/discard/bsd_pcpu.h - public/gem5-resources - Git at Google

 /*-
  * Copyright (c) Peter Wemm
  * 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 _BSD_MACHINE_PCPU_H_
 #define	_BSD_MACHINE_PCPU_H_

 #ifndef _BSD_SYS_CDEFS_H_
 #error "sys/cdefs.h is a prerequisite for this file"
 #endif

 #include <machine/bsd_segments.h>
 #include <machine/bsd_tss.h>

 /*
  * The SMP parts are setup in pmap.c and locore.s for the BSP, and
  * mp_machdep.c sets up the data for the AP's to "see" when they awake.
  * The reason for doing it via a struct is so that an array of pointers
  * to each CPU's data can be set up for things like "check curproc on all
  * other processors"
  */

 #ifdef XEN
 #ifndef NR_VIRQS
 #define	NR_VIRQS	24
 #endif
 #ifndef NR_IPIS
 #define	NR_IPIS		2
 #endif

 /* These are peridically updated in shared_info, and then copied here. */
 struct shadow_time_info {
 	uint64_t tsc_timestamp;     /* TSC at last update of time vals.  */
 	uint64_t system_timestamp;  /* Time, in nanosecs, since boot.    */
 	uint32_t tsc_to_nsec_mul;
 	uint32_t tsc_to_usec_mul;
 	int tsc_shift;
 	uint32_t version;
 };


 #define	PCPU_MD_FIELDS							\
 	char	pc_monitorbuf[128] __aligned(128); /* cache line */	\
 	struct	pcpu *pc_prvspace;	/* Self-reference */		\
 	struct	pmap *pc_curpmap;					\
 	struct	i386tss pc_common_tss;					\
 	struct	segment_descriptor pc_common_tssd;			\
 	struct	segment_descriptor *pc_tss_gdt;				\
 	struct	segment_descriptor *pc_fsgs_gdt;			\
 	vm_paddr_t 	*pc_pdir_shadow;				\
 	int	pc_currentldt;						\
 	u_int   pc_acpi_id;		/* ACPI CPU id */		\
 	u_int	pc_apic_id;						\
 	int	pc_private_tss;		/* Flag indicating private tss*/\
         u_int     pc_cr3;		/* track cr3 for R1/R3*/	\
         u_int     pc_pdir;                                              \
         u_int     pc_lazypmap;                                          \
         u_int     pc_rendezvous;                                        \
         u_int     pc_cpuast;						\
 	uint64_t  pc_processed_system_time;				\
 	struct shadow_time_info pc_shadow_time;				\
 	int	pc_resched_irq;						\
 	int	pc_callfunc_irq;					\
         int	pc_virq_to_irq[NR_VIRQS];				\
 	int	pc_ipi_to_irq[NR_IPIS]


 #else
 #define	PCPU_MD_FIELDS							\
 	char	pc_monitorbuf[128] __aligned(128); /* cache line */	\
 	struct	pcpu *pc_prvspace;	/* Self-reference */		\
 	struct	pmap *pc_curpmap;					\
 	struct	i386tss pc_common_tss;					\
 	struct	segment_descriptor pc_common_tssd;			\
 	struct	segment_descriptor *pc_tss_gdt;				\
 	struct	segment_descriptor *pc_fsgs_gdt;			\
 	int	pc_currentldt;						\
 	u_int   pc_acpi_id;		/* ACPI CPU id */		\
 	u_int	pc_apic_id;						\
 	int	pc_private_tss		/* Flag indicating private tss */

 #endif

 #ifdef _FREEBSD_KERNEL

 #ifdef lint

 extern struct pcpu *pcpup;

 #define	PCPU_GET(member)	(pcpup->pc_ ## member)
 #define	PCPU_ADD(member, val)	(pcpup->pc_ ## member += (val))
 #define	PCPU_INC(member)	PCPU_ADD(member, 1)
 #define	PCPU_PTR(member)	(&pcpup->pc_ ## member)
 #define	PCPU_SET(member, val)	(pcpup->pc_ ## member = (val))

 #elif defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF)

 /*
  * Evaluates to the byte offset of the per-cpu variable name.
  */
 #define	__pcpu_offset(name)						\
 	__offsetof(struct pcpu, name)

 /*
  * Evaluates to the type of the per-cpu variable name.
  */
 #define	__pcpu_type(name)						\
 	__typeof(((struct pcpu *)0)->name)

 /*
  * Evaluates to the address of the per-cpu variable name.
  */
 #define	__PCPU_PTR(name) __extension__ ({				\
 	__pcpu_type(name) *__p;						\
 									\
 	__asm __volatile("movl %%fs:%1,%0; addl %2,%0"			\
 	    : "=r" (__p)						\
 	    : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace))),	\
 	      "i" (__pcpu_offset(name)));				\
 									\
 	__p;								\
 })

 /*
  * Evaluates to the value of the per-cpu variable name.
  */
 #define	__PCPU_GET(name) __extension__ ({				\
 	__pcpu_type(name) __res;					\
 	struct __s {							\
 		u_char	__b[MIN(sizeof(__pcpu_type(name)), 4)];		\
 	} __s;								\
 									\
 	if (sizeof(__res) == 1 || sizeof(__res) == 2 ||			\
 	    sizeof(__res) == 4) {					\
 		__asm __volatile("mov %%fs:%1,%0"			\
 		    : "=r" (__s)					\
 		    : "m" (*(struct __s *)(__pcpu_offset(name))));	\
 		*(struct __s *)(void *)&__res = __s;			\
 	} else {							\
 		__res = *__PCPU_PTR(name);				\
 	}								\
 	__res;								\
 })

 /*
  * Adds a value of the per-cpu counter name.  The implementation
  * must be atomic with respect to interrupts.
  */
 #define	__PCPU_ADD(name, val) do {					\
 	__pcpu_type(name) __val;					\
 	struct __s {							\
 		u_char	__b[MIN(sizeof(__pcpu_type(name)), 4)];		\
 	} __s;								\
 									\
 	__val = (val);							\
 	if (sizeof(__val) == 1 || sizeof(__val) == 2 ||			\
 	    sizeof(__val) == 4) {					\
 		__s = *(struct __s *)(void *)&__val;			\
 		__asm __volatile("add %1,%%fs:%0"			\
 		    : "=m" (*(struct __s *)(__pcpu_offset(name)))	\
 		    : "r" (__s));					\
 	} else								\
 		*__PCPU_PTR(name) += __val;				\
 } while (0)

 /*
  * Increments the value of the per-cpu counter name.  The implementation
  * must be atomic with respect to interrupts.
  */
 #define	__PCPU_INC(name) do {						\
 	CTASSERT(sizeof(__pcpu_type(name)) == 1 ||			\
 	    sizeof(__pcpu_type(name)) == 2 ||				\
 	    sizeof(__pcpu_type(name)) == 4);				\
 	if (sizeof(__pcpu_type(name)) == 1) {				\
 		__asm __volatile("incb %%fs:%0"				\
 		    : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
 		    : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
 	} else if (sizeof(__pcpu_type(name)) == 2) {			\
 		__asm __volatile("incw %%fs:%0"				\
 		    : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
 		    : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
 	} else if (sizeof(__pcpu_type(name)) == 4) {			\
 		__asm __volatile("incl %%fs:%0"				\
 		    : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
 		    : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
 	}								\
 } while (0)

 /*
  * Sets the value of the per-cpu variable name to value val.
  */
 #define	__PCPU_SET(name, val) {						\
 	__pcpu_type(name) __val;					\
 	struct __s {							\
 		u_char	__b[MIN(sizeof(__pcpu_type(name)), 4)];		\
 	} __s;								\
 									\
 	__val = (val);							\
 	if (sizeof(__val) == 1 || sizeof(__val) == 2 ||			\
 	    sizeof(__val) == 4) {					\
 		__s = *(struct __s *)(void *)&__val;			\
 		__asm __volatile("mov %1,%%fs:%0"			\
 		    : "=m" (*(struct __s *)(__pcpu_offset(name)))	\
 		    : "r" (__s));					\
 	} else {							\
 		*__PCPU_PTR(name) = __val;				\
 	}								\
 }

 #define	PCPU_GET(member)	__PCPU_GET(pc_ ## member)
 #define	PCPU_ADD(member, val)	__PCPU_ADD(pc_ ## member, val)
 #define	PCPU_INC(member)	__PCPU_INC(pc_ ## member)
 #define	PCPU_PTR(member)	__PCPU_PTR(pc_ ## member)
 #define	PCPU_SET(member, val)	__PCPU_SET(pc_ ## member, val)

 static __inline struct thread *
 __curthread(void)
 {
 	struct thread *td;

 	__asm __volatile("movl %%fs:0,%0" : "=r" (td));
 	return (td);
 }
 #define	curthread		(__curthread())

 #else /* !lint || defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) */

 #error "this file needs to be ported to your compiler"

 #endif /* lint, etc. */

 #endif /* _FREEBSD_KERNEL */

 #endif /* !_BSD_MACHINE_PCPU_H_ */
	/*-
	* Copyright (c) Peter Wemm
	* 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 _BSD_MACHINE_PCPU_H_
	#define _BSD_MACHINE_PCPU_H_

	#ifndef _BSD_SYS_CDEFS_H_
	#error "sys/cdefs.h is a prerequisite for this file"
	#endif

	#include <machine/bsd_segments.h>
	#include <machine/bsd_tss.h>

	/*
	* The SMP parts are setup in pmap.c and locore.s for the BSP, and
	* mp_machdep.c sets up the data for the AP's to "see" when they awake.
	* The reason for doing it via a struct is so that an array of pointers
	* to each CPU's data can be set up for things like "check curproc on all
	* other processors"
	*/

	#ifdef XEN
	#ifndef NR_VIRQS
	#define NR_VIRQS 24
	#endif
	#ifndef NR_IPIS
	#define NR_IPIS 2
	#endif

	/* These are peridically updated in shared_info, and then copied here. */
	struct shadow_time_info {
	uint64_t tsc_timestamp; /* TSC at last update of time vals. */
	uint64_t system_timestamp; /* Time, in nanosecs, since boot. */
	uint32_t tsc_to_nsec_mul;
	uint32_t tsc_to_usec_mul;
	int tsc_shift;
	uint32_t version;
	};


	#define PCPU_MD_FIELDS \
	char pc_monitorbuf[128] __aligned(128); /* cache line */ \
	struct pcpu pc_prvspace; / Self-reference */ \
	struct pmap *pc_curpmap; \
	struct i386tss pc_common_tss; \
	struct segment_descriptor pc_common_tssd; \
	struct segment_descriptor *pc_tss_gdt; \
	struct segment_descriptor *pc_fsgs_gdt; \
	vm_paddr_t *pc_pdir_shadow; \
	int pc_currentldt; \
	u_int pc_acpi_id; /* ACPI CPU id */ \
	u_int pc_apic_id; \
	int pc_private_tss; /* Flag indicating private tss*/\
	u_int pc_cr3; /* track cr3 for R1/R3*/ \
	u_int pc_pdir; \
	u_int pc_lazypmap; \
	u_int pc_rendezvous; \
	u_int pc_cpuast; \
	uint64_t pc_processed_system_time; \
	struct shadow_time_info pc_shadow_time; \
	int pc_resched_irq; \
	int pc_callfunc_irq; \
	int pc_virq_to_irq[NR_VIRQS]; \
	int pc_ipi_to_irq[NR_IPIS]



	#else
	#define PCPU_MD_FIELDS \
	char pc_monitorbuf[128] __aligned(128); /* cache line */ \
	struct pcpu pc_prvspace; / Self-reference */ \
	struct pmap *pc_curpmap; \
	struct i386tss pc_common_tss; \
	struct segment_descriptor pc_common_tssd; \
	struct segment_descriptor *pc_tss_gdt; \
	struct segment_descriptor *pc_fsgs_gdt; \
	int pc_currentldt; \
	u_int pc_acpi_id; /* ACPI CPU id */ \
	u_int pc_apic_id; \
	int pc_private_tss /* Flag indicating private tss */

	#endif

	#ifdef _FREEBSD_KERNEL

	#ifdef lint

	extern struct pcpu *pcpup;

	#define PCPU_GET(member) (pcpup->pc_ ## member)
	#define PCPU_ADD(member, val) (pcpup->pc_ ## member += (val))
	#define PCPU_INC(member) PCPU_ADD(member, 1)
	#define PCPU_PTR(member) (&pcpup->pc_ ## member)
	#define PCPU_SET(member, val) (pcpup->pc_ ## member = (val))

	#elif defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF)

	/*
	* Evaluates to the byte offset of the per-cpu variable name.
	*/
	#define __pcpu_offset(name) \
	__offsetof(struct pcpu, name)

	/*
	* Evaluates to the type of the per-cpu variable name.
	*/
	#define __pcpu_type(name) \
	__typeof(((struct pcpu *)0)->name)

	/*
	* Evaluates to the address of the per-cpu variable name.
	*/
	#define __PCPU_PTR(name) __extension__ ({ \
	__pcpu_type(name) *__p; \
	\
	__asm __volatile("movl %%fs:%1,%0; addl %2,%0" \
	: "=r" (__p) \
	: "m" ((struct pcpu )(__pcpu_offset(pc_prvspace))), \
	"i" (__pcpu_offset(name))); \
	\
	__p; \
	})

	/*
	* Evaluates to the value of the per-cpu variable name.
	*/
	#define __PCPU_GET(name) __extension__ ({ \
	__pcpu_type(name) __res; \
	struct __s { \
	u_char __b[MIN(sizeof(__pcpu_type(name)), 4)]; \
	} __s; \
	\
	if (sizeof(__res) == 1 \|\| sizeof(__res) == 2 \|\| \
	sizeof(__res) == 4) { \
	__asm __volatile("mov %%fs:%1,%0" \
	: "=r" (__s) \
	: "m" ((struct __s )(__pcpu_offset(name)))); \
	(struct __s )(void *)&__res = __s; \
	} else { \
	__res = *__PCPU_PTR(name); \
	} \
	__res; \
	})

	/*
	* Adds a value of the per-cpu counter name. The implementation
	* must be atomic with respect to interrupts.
	*/
	#define __PCPU_ADD(name, val) do { \
	__pcpu_type(name) __val; \
	struct __s { \
	u_char __b[MIN(sizeof(__pcpu_type(name)), 4)]; \
	} __s; \
	\
	__val = (val); \
	if (sizeof(__val) == 1 \|\| sizeof(__val) == 2 \|\| \
	sizeof(__val) == 4) { \
	__s = (struct __s )(void *)&__val; \
	__asm __volatile("add %1,%%fs:%0" \
	: "=m" ((struct __s )(__pcpu_offset(name))) \
	: "r" (__s)); \
	} else \
	*__PCPU_PTR(name) += __val; \
	} while (0)

	/*
	* Increments the value of the per-cpu counter name. The implementation
	* must be atomic with respect to interrupts.
	*/
	#define __PCPU_INC(name) do { \
	CTASSERT(sizeof(__pcpu_type(name)) == 1 \|\| \
	sizeof(__pcpu_type(name)) == 2 \|\| \
	sizeof(__pcpu_type(name)) == 4); \
	if (sizeof(__pcpu_type(name)) == 1) { \
	__asm __volatile("incb %%fs:%0" \
	: "=m" ((__pcpu_type(name) )(__pcpu_offset(name)))\
	: "m" ((__pcpu_type(name) )(__pcpu_offset(name))));\
	} else if (sizeof(__pcpu_type(name)) == 2) { \
	__asm __volatile("incw %%fs:%0" \
	: "=m" ((__pcpu_type(name) )(__pcpu_offset(name)))\
	: "m" ((__pcpu_type(name) )(__pcpu_offset(name))));\
	} else if (sizeof(__pcpu_type(name)) == 4) { \
	__asm __volatile("incl %%fs:%0" \
	: "=m" ((__pcpu_type(name) )(__pcpu_offset(name)))\
	: "m" ((__pcpu_type(name) )(__pcpu_offset(name))));\
	} \
	} while (0)

	/*
	* Sets the value of the per-cpu variable name to value val.
	*/
	#define __PCPU_SET(name, val) { \
	__pcpu_type(name) __val; \
	struct __s { \
	u_char __b[MIN(sizeof(__pcpu_type(name)), 4)]; \
	} __s; \
	\
	__val = (val); \
	if (sizeof(__val) == 1 \|\| sizeof(__val) == 2 \|\| \
	sizeof(__val) == 4) { \
	__s = (struct __s )(void *)&__val; \
	__asm __volatile("mov %1,%%fs:%0" \
	: "=m" ((struct __s )(__pcpu_offset(name))) \
	: "r" (__s)); \
	} else { \
	*__PCPU_PTR(name) = __val; \
	} \
	}

	#define PCPU_GET(member) __PCPU_GET(pc_ ## member)
	#define PCPU_ADD(member, val) __PCPU_ADD(pc_ ## member, val)
	#define PCPU_INC(member) __PCPU_INC(pc_ ## member)
	#define PCPU_PTR(member) __PCPU_PTR(pc_ ## member)
	#define PCPU_SET(member, val) __PCPU_SET(pc_ ## member, val)

	static __inline struct thread *
	__curthread(void)
	{
	struct thread *td;

	__asm __volatile("movl %%fs:0,%0" : "=r" (td));
	return (td);
	}
	#define curthread (__curthread())

	#else /* !lint \|\| defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) */

	#error "this file needs to be ported to your compiler"

	#endif /* lint, etc. */

	#endif /* _FREEBSD_KERNEL */

	#endif /* !_BSD_MACHINE_PCPU_H_ */