BSD 3 development

Work on file usr/src/sys/h/systm.h

Synthesized-from: 3bsd

diff --git a/usr/src/sys/h/systm.h b/usr/src/sys/h/systm.h
new file mode 100644 (file)
index 0000000..ee4c271
--- /dev/null
+++ b/usr/src/sys/h/systm.h
@@ -0,0 +1,90 @@
+/*     systm.h 2.2     1/14/80 */
+
+/*
+ * Random set of variables
+ * used by more than one
+ * routine.
+ */
+char   canonb[CANBSIZ];        /* buffer for erase and kill (#@) */
+int    cpusid;                 /* cpu SID register */
+char   version[];              /* system version */
+int    lbolt;                  /* time of day in 60th not in time */
+time_t time;                   /* time in sec from 1970 */
+time_t bootime;                /* time at which booted */
+
+/* int zeropage;               /* page frame number of page of zeros */
+int    hand;                   /* current index into coremap used by daemon */
+
+/*
+ * Nblkdev is the number of entries
+ * (rows) in the block switch. It is
+ * set in binit/bio.c by making
+ * a pass over the switch.
+ * Used in bounds checking on major
+ * device numbers.
+ */
+int    nblkdev;
+
+/*
+ * Number of character switch entries.
+ * Set by cinit/tty.c
+ */
+int    nchrdev;
+
+int    mpid;                   /* generic for unique process id's */
+char   runin;                  /* scheduling flag */
+char   runout;                 /* scheduling flag */
+char   runrun;                 /* scheduling flag */
+char   kmapwnt;                /* kernel map want flag */
+char   curpri;                 /* more scheduling */
+
+int    maxmem;                 /* actual max memory per process */
+int    physmem;                /* physical memory on this CPU */
+
+daddr_t        swplo;                  /* block number of swap space */
+int    nswap;                  /* size of swap space */
+int    updlock;                /* lock for sync */
+daddr_t        rablock;                /* block to be read ahead */
+char   msgbuf[MSGBUFS];        /* saved "printf" characters */
+int    intstack[512];          /* stack for interrupts */
+dev_t  rootdev;                /* device of the root */
+dev_t  swapdev;                /* swapping device */
+dev_t  pipedev;                /* pipe device */
+
+extern int icode[];            /* user init code */
+extern int szicode;            /* its size */
+
+extern int printsw;            /* debug print switch */
+extern int coresw;             /* switch to force action on core dumps */
+
+dev_t  getmdev();
+daddr_t        bmap();
+unsigned max();
+unsigned min();
+int    memall();
+int    uchar();
+int    vmemall();
+swblk_t        vtod();
+/*
+ * Instrumentation
+ */
+int    dk_busy;
+long   dk_time[32];
+long   dk_numb[3];
+long   dk_wds[3];
+long   tk_nin;
+long   tk_nout;
+
+/*
+ * Structure of the system-entry table
+ */
+extern struct sysent
+{
+       char    sy_narg;                /* total number of arguments */
+       char    sy_nrarg;               /* number of args in registers */
+       int     (*sy_call)();           /* handler */
+} sysent[];
+
+char   vmmap[];                /* poor name! */
+int    mcr[3];                 /* memory controller registers */
+int    umbabeg,umbaend;        /* where sensitive vm begins/ends */