BSD 4_3_Net_2 release

[unix-history] / usr / src / sys / i386 / include / pcb.h

diff --git a/usr/src/sys/i386/include/pcb.h b/usr/src/sys/i386/include/pcb.h
index 4915aa6..c29ac8a 100644 (file)
--- a/usr/src/sys/i386/include/pcb.h
+++ b/usr/src/sys/i386/include/pcb.h
@@ -5,44 +5,72 @@
  * This code is derived from software contributed to Berkeley by
  * William Jolitz.
  *
  * This code is derived from software contributed to Berkeley by
  * William Jolitz.
  *

- * %sccs.include.redist.c%
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.

  *
  *

- *     @(#)pcb.h       5.7 (Berkeley) %G%
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *     @(#)pcb.h       5.10 (Berkeley) 5/12/91

  */
 
 /*
  * Intel 386 process control block
  */
  */
 
 /*
  * Intel 386 process control block
  */

-#include "tss.h"
-#include "npx.h"
+#include "machine/tss.h"
+#include "machine/npx.h"

 
 struct pcb {
 
 struct pcb {

-       struct  i386tss pcbtss;
-#define        pcb_ksp pcbtss.tss_esp0
-#define        pcb_ptd pcbtss.tss_cr3
+       struct  i386tss pcb_tss;
+#define        pcb_ksp pcb_tss.tss_esp0
+#define        pcb_ptd pcb_tss.tss_cr3

 #define        pcb_cr3 pcb_ptd
 #define        pcb_cr3 pcb_ptd

-#define        pcb_pc  pcbtss.tss_eip
-#define        pcb_psl pcbtss.tss_eflags
-#define        pcb_usp pcbtss.tss_esp
-#define        pcb_fp  pcbtss.tss_ebp
+#define        pcb_pc  pcb_tss.tss_eip
+#define        pcb_psl pcb_tss.tss_eflags
+#define        pcb_usp pcb_tss.tss_esp
+#define        pcb_fp  pcb_tss.tss_ebp
+#ifdef notyet
+       u_char  pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
+#endif
+       struct  save87  pcb_savefpu;    /* floating point state for 287/387 */
+       struct  emcsts  pcb_saveemc;    /* Cyrix EMC state */

 /*
  * Software pcb (extension)
  */
        int     pcb_flags;
 /*
  * Software pcb (extension)
  */
        int     pcb_flags;

-#define        FP_WASUSED      0x1     /* floating point has been used in this proc */
-#define        FP_NEEDSSAVE    0x2     /* needs save on next context switch */
-#define        FP_NEEDSRESTORE 0x4     /* need restore on next DNA fault */
-#define        FP_USESEMC      0x8     /* process uses EMC memory-mapped mode */
-#define        EX_TRAPSTK      0x10    /* process entered with a trap stack frame */
-       struct  save87  pcb_savefpu;
-       struct  emcsts  pcb_saveemc;
-       struct  pte     *pcb_p0br;
-       struct  pte     *pcb_p1br;
-       int     pcb_p0lr;
-       int     pcb_p1lr;
-       int     pcb_szpt;       /* number of pages of user page table */
-       int     pcb_cmap2;
-       int     *pcb_sswap;
-       long    pcb_sigc[8];
-       int     pcb_iml;        /* interrupt mask level */
+#define        FP_WASUSED      0x01    /* floating point has been used in this proc */
+#define        FP_NEEDSSAVE    0x02    /* needs save on next context switch */
+#define        FP_NEEDSRESTORE 0x04    /* need restore on next DNA fault */
+#define        FP_USESEMC      0x08    /* process uses EMC memory-mapped mode */
+#define        FM_TRAP         0x10    /* process entered kernel on a trap frame */
+       short   pcb_iml;        /* interrupt mask level */
+       caddr_t pcb_onfault;    /* copyin/out fault recovery */
+       long    pcb_sigc[8];    /* XXX signal code trampoline */
+       int     pcb_cmap2;      /* XXX temporary PTE - will prefault instead */

 };
 };

+
+#ifdef KERNEL
+struct pcb *curpcb;            /* our current running pcb */
+#endif