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-rw-r--r--sys/alpha/include/pcpu.h79
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diff --git a/sys/alpha/include/pcpu.h b/sys/alpha/include/pcpu.h
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+/*-
+ * 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_GLOBALDATA_H_
+#define _MACHINE_GLOBALDATA_H_
+
+#ifdef _KERNEL
+
+#include <sys/queue.h>
+
+/*
+ * This structure maps out the global data that needs to be kept on a
+ * per-cpu basis. genassym uses this to generate offsets for the assembler
+ * code, which also provides external symbols so that C can get at them as
+ * though they were really globals. This structure is pointed to by
+ * the per-cpu system value (see alpha_pal_rdval() and alpha_pal_wrval()).
+ * Inside the kernel, the globally reserved register t7 is used to
+ * point at the globaldata structure.
+ */
+struct globaldata {
+ struct alpha_pcb gd_idlepcb; /* pcb for idling */
+ struct proc *gd_curproc; /* current process */
+ struct proc *gd_idleproc; /* idle process */
+ struct proc *gd_fpcurproc; /* fp state owner */
+ struct pcb *gd_curpcb; /* current pcb */
+ struct timeval gd_switchtime;
+ int gd_switchticks;
+ u_int gd_cpuno; /* this cpu number */
+ u_int gd_other_cpus; /* all other cpus */
+ int gd_inside_intr;
+ u_int64_t gd_idlepcbphys; /* pa of gd_idlepcb */
+ u_int64_t gd_pending_ipis; /* pending IPI events */
+ u_int32_t gd_next_asn; /* next ASN to allocate */
+ u_int32_t gd_current_asngen; /* ASN rollover check */
+ u_int32_t gd_intr_nesting_level; /* interrupt recursion */
+
+ u_int gd_astpending;
+ SLIST_ENTRY(globaldata) gd_allcpu;
+#ifdef KTR_PERCPU
+ volatile int gd_ktr_idx; /* Index into trace table */
+ char *gd_ktr_buf;
+ char gd_ktr_buf_data[0];
+#endif
+};
+
+SLIST_HEAD(cpuhead, globaldata);
+extern struct cpuhead cpuhead;
+
+void globaldata_init(struct globaldata *pcpu, int cpuno, size_t sz);
+struct globaldata *globaldata_find(int cpuno);
+
+#endif /* _KERNEL */
+
+#endif /* !_MACHINE_GLOBALDATA_H_ */
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