remove ancient syssem entry points.

Reference: /n/atom/patch/applied/rmsyssem
Date: Thu Jun 12 03:33:47 CES 2014
Signed-off-by: quanstro@quanstro.net

# rm /sys/src/nix/port/syssem.c

--- /sys/src/nix/port/image.c	Thu Jun 12 03:33:17 2014
+++ /sys/src/nix/port/image.c	Thu Jun 12 03:33:19 2014
@@ -139,7 +139,6 @@
 			   eqqid(c->mqid, i->mqid) &&
 			   c->mchan == i->mchan &&
 			   c->dev->dc == i->dc) {
-//subtype
 				goto found;
 			}
 			unlock(i);
@@ -161,7 +160,6 @@
 	incref(c);
 	i->c = c;
 	i->dc = c->dev->dc;
-//subtype
 	i->qid = c->qid;
 	i->mqid = c->mqid;
 	i->mchan = c->mchan;
--- /sys/src/nix/port/portdat.h	Thu Jun 12 03:33:23 2014
+++ /sys/src/nix/port/portdat.h	Thu Jun 12 03:33:26 2014
@@ -46,9 +46,7 @@
 typedef struct Sched	Sched;
 typedef struct Schedq	Schedq;
 typedef struct Segment	Segment;
-typedef struct Sem	Sem;
 typedef struct Sema	Sema;
-typedef struct Sems	Sems;
 typedef struct Timer	Timer;
 typedef struct Timers	Timers;
 typedef struct Uart	Uart;
@@ -387,7 +385,6 @@
 	Qid	mqid;
 	Chan	*mchan;
 	int	dc;			/* Device type of owning channel */
-//subtype
 	Segment *s;			/* TEXT segment for image if running */
 	Image	*hash;			/* Qid hash chains */
 	Image	*next;			/* Free list or lru list */
@@ -454,23 +451,6 @@
 	Sema*	prev;
 };
 
-/* NIX semaphores */
-struct Sem
-{
-	Lock;
-	int*	np;		/* user-level semaphore */
-	Proc**	q;
-	int	nq;
-	Sem*	next;		/* in list of semaphores for this Segment */
-};
-
-/* NIX semaphores */
-struct Sems
-{
-	Sem**	s;
-	int	ns;
-};
-
 #define NOCOLOR -1
 
 struct Segment
@@ -497,7 +477,6 @@
 	Pte	*ssegmap[SSEGMAPSIZE];
 	Lock	semalock;
 	Sema	sema;
-	Sems	sems;
 };
 
 enum
@@ -845,9 +824,6 @@
 
 	int	fcount;
 	char*	syscalltrace;
-
-	/* NIX */
-	Sem	*waitsem;
 
 	uint	ntrap;		/* # of traps while in this process */
 	uint	nintr;		/* # of intrs while in this process */
--- /sys/src/nix/port/portfns.h	Thu Jun 12 03:33:29 2014
+++ /sys/src/nix/port/portfns.h	Thu Jun 12 03:33:30 2014
@@ -324,7 +324,6 @@
 long		seconds(void);
 Segment*	seg(Proc*, uintptr, int);
 void		segclock(uintptr);
-Sem*		segmksem(Segment*, int*);
 void		segpage(Segment*, Page*);
 uintmem		segppn(Segment*, uintmem);
 char*		seprintpagestats(char*, char*);
--- /sys/src/nix/port/segment.c	Thu Jun 12 03:33:32 2014
+++ /sys/src/nix/port/segment.c	Thu Jun 12 03:33:33 2014
@@ -94,26 +94,6 @@
 #define	NHASH 101
 #define SHASH(np)	(PTR2UINT(np)%NHASH)
 
-Sem*
-segmksem(Segment *sg, int *np)
-{
-	Sem *s, **l;
-
-	qlock(&sg->lk);
-	if(sg->sems.s == nil)
-		sg->sems.s = mallocz(NHASH * sizeof(Sem*), 1);
-	for(l = &sg->sems.s[SHASH(np)]; (s = *l) != nil; l = &s->next)
-		if(s->np == np){
-			qunlock(&sg->lk);
-			return s;
-		}
-	s = mallocz(sizeof *s, 1);
-	s->np = np;
-	*l = s;
-	qunlock(&sg->lk);
-	return s;
-}
-
 void
 putseg(Segment *s)
 {
@@ -156,8 +136,6 @@
 		free(s->map);
 	if(s->profile != 0)
 		free(s->profile);
-	if(s->sems.s != nil)
-		free(s->sems.s);
 	free(s);
 }