From: Bill Joy <wnj@ucbvax.Berkeley.EDU>
Date: Wed, 16 Jan 1980 08:09:11 +0000 (-0800)
Subject: BSD 3 development
X-Git-Tag: BSD-3~48
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/1770eb134541846ff1cb5217aab429480cc5271d

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
index 0000000000..ee4c2715da
--- /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 */