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📄 _align.h(87 B)
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📄 _inttypes.h(90 B)
📄 _limits.h(88 B)
📄 _stdint.h(88 B)
📄 _types.h(87 B)
📄 acpica_machdep.h(95 B)
📄 apm_bios.h(89 B)
📄 apm_segments.h(1.16 KB)
📄 asm.h(4.01 KB)
📄 asmacros.h(8.5 KB)
📄 atomic.h(27.13 KB)
📄 bootinfo.h(4.51 KB)
📄 bus.h(84 B)
📄 bus_dma.h(1.51 KB)
📄 clock.h(853 B)
📄 counter.h(4.78 KB)
📄 cpu.h(2.99 KB)
📄 cpufunc.h(15.05 KB)
📄 cputypes.h(2.64 KB)
📄 cserial.h(14.25 KB)
📄 db_machdep.h(2.87 KB)
📄 dump.h(85 B)
📄 efi.h(322 B)
📄 elan_mmcr.h(7.09 KB)
📄 elf.h(84 B)
📄 endian.h(87 B)
📄 exec.h(1.76 KB)
📄 fdt.h(84 B)
📄 float.h(86 B)
📄 floatingpoint.h(2.01 KB)
📄 fpu.h(87 B)
📄 frame.h(1.98 KB)
📄 gdb_machdep.h(1.89 KB)
📄 ieeefp.h(6.83 KB)
📄 in_cksum.h(3.98 KB)
📄 intr_machdep.h(93 B)
📄 iodev.h(1.81 KB)
📄 iommu.h(121 B)
📄 kdb.h(1.85 KB)
📄 limits.h(1.9 KB)
📄 md_var.h(3.41 KB)
📄 memdev.h(1.6 KB)
📄 metadata.h(89 B)
📄 minidump.h(1.71 KB)
📄 mp_watchdog.h(1.53 KB)
📄 nexusvar.h(1.76 KB)
📄 npx.h(3.39 KB)
📄 ofw_machdep.h(92 B)
📄 param.h(5.17 KB)
📁 pc
📄 pcb.h(3.61 KB)
📄 pcb_ext.h(1.88 KB)
📄 pci_cfgreg.h(91 B)
📄 pcpu.h(7.63 KB)
📄 pcpu_aux.h(2.3 KB)
📄 perfmon.h(7.25 KB)
📄 pmap.h(9.9 KB)
📄 pmap_base.h(5.33 KB)
📄 pmap_nopae.h(3.62 KB)
📄 pmap_pae.h(5.18 KB)
📄 pmc_mdep.h(5.51 KB)
📄 ppireg.h(1.88 KB)
📄 proc.h(2.92 KB)
📄 procctl.h(88 B)
📄 profile.h(5.53 KB)
📄 psl.h(84 B)
📄 ptrace.h(87 B)
📄 pvclock.h(88 B)
📄 reg.h(84 B)
📄 reloc.h(2.26 KB)
📄 resource.h(1.93 KB)
📄 runq.h(1.85 KB)
📄 segments.h(3.59 KB)
📄 setjmp.h(87 B)
📄 sf_buf.h(1.62 KB)
📄 sigframe.h(2.9 KB)
📄 signal.h(2.28 KB)
📄 smapi.h(2.57 KB)
📄 smp.h(1.16 KB)
📄 speaker.h(291 B)
📄 specialreg.h(91 B)
📄 stack.h(85 B)
📄 stdarg.h(87 B)
📄 sysarch.h(88 B)
📄 timerreg.h(2.05 KB)
📄 trap.h(85 B)
📄 tss.h(3.13 KB)
📄 ucontext.h(2.34 KB)
📄 vdso.h(85 B)
📄 vm.h(2.02 KB)
📄 vm86.h(4.53 KB)
📄 vmparam.h(7.59 KB)
📁 xen

Editing: pcpu.h

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * 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 _MACHINE_PCPU_H_
#define	_MACHINE_PCPU_H_

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

#include <machine/segments.h>
#include <machine/tss.h>

#include <sys/_lock.h>
#include <sys/_mutex.h>

struct monitorbuf {
	int idle_state;		/* Used by cpu_idle_mwait. */
	int stop_state;		/* Used by cpustop_handler. */
	char padding[128 - (2 * sizeof(int))];
};
_Static_assert(sizeof(struct monitorbuf) == 128, "2x cache line");

/*
 * The SMP parts are setup in pmap.c and machdep.c for the BSP, and
 * pmap.c 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"
 */

#define	PCPU_MD_FIELDS							\
	struct monitorbuf pc_monitorbuf __aligned(128);	/* cache line */\
	struct	pcpu *pc_prvspace;	/* Self-reference */		\
	struct	pmap *pc_curpmap;					\
	struct	segment_descriptor pc_common_tssd;			\
	struct	segment_descriptor *pc_tss_gdt;				\
	struct	segment_descriptor *pc_fsgs_gdt;			\
	struct	i386tss *pc_common_tssp;				\
	u_int	pc_kesp0;						\
	u_int	pc_trampstk;						\
	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_cmci_mask;		/* MCx banks for CMCI */	\
	u_int	pc_vcpu_id;		/* Xen vCPU ID */		\
	struct	mtx pc_cmap_lock;					\
	void	*pc_cmap_pte1;						\
	void	*pc_cmap_pte2;						\
	caddr_t	pc_cmap_addr1;						\
	caddr_t	pc_cmap_addr2;						\
	vm_offset_t pc_qmap_addr;	/* KVA for temporary mappings */\
	vm_offset_t pc_copyout_maddr;					\
	vm_offset_t pc_copyout_saddr;					\
	struct	mtx pc_copyout_mlock;					\
	struct	sx pc_copyout_slock;					\
	char	*pc_copyout_buf;					\
	vm_offset_t pc_pmap_eh_va;					\
	caddr_t pc_pmap_eh_ptep;					\
	uint32_t pc_smp_tlb_done;	/* TLB op acknowledgement */	\
	uint32_t pc_ibpb_set;						\
	void	*pc_mds_buf;						\
	void	*pc_mds_buf64;						\
	uint32_t pc_pad[4];						\
	uint8_t	pc_mds_tmp[64];						\
	u_int	pc_ipi_bitmap;						\
	char	__pad[3518]

#ifdef _KERNEL

#define MONITOR_STOPSTATE_RUNNING	0
#define MONITOR_STOPSTATE_STOPPED	1

#if 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(__res), 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(__val), 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) do {					\
	__pcpu_type(name) __val;					\
	struct __s {							\
		u_char	__b[MIN(sizeof(__val), 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;				\
	}								\
} while (0)

#define	get_pcpu() __extension__ ({					\
	struct pcpu *__pc;						\
									\
	__asm __volatile("movl %%fs:%1,%0"				\
	    : "=r" (__pc)						\
	    : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace))));	\
	__pc;								\
})

#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)

#define	IS_BSP()	(PCPU_GET(cpuid) == 0)

#else /* defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) */

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

#endif /* __GNUCLIKE_ASM etc. */

#endif /* _KERNEL */

#endif /* !_MACHINE_PCPU_H_ */

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Editing: pcpu.h

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