X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/ef7f2ecf428b106013e9abcb9df8c9e4a42e14fe..6ec53610779ef25c81900ddaf0b49eca117cd6ef:/usr/src/lib/libc/gmon/gmon.c?ds=inline

diff --git a/usr/src/lib/libc/gmon/gmon.c b/usr/src/lib/libc/gmon/gmon.c
index ace54dfae8..1c9f0d6740 100644
--- a/usr/src/lib/libc/gmon/gmon.c
+++ b/usr/src/lib/libc/gmon/gmon.c
@@ -1,4 +1,4 @@
-static	char *sccsid = "@(#)gmon.c	1.8 (Berkeley) %G%";
+static	char *sccsid = "@(#)gmon.c	4.4 (Berkeley) %G%";
 
 #ifdef DEBUG
 #include <stdio.h>
@@ -48,14 +48,15 @@ start()
 	/*
 	 *	ALL REGISTER VARIABLES!!!
 	 */
-    register struct kframe	*kfp;		/* r11 */
+    register int		r11;		/* init needs r11 */
+    register struct kframe	*kfp;		/* r10 */
     register char		**targv;
     register char		**argv;
 
 #ifdef lint
     kfp = 0;
 #else not lint
-    asm( "	movl	sp,r11" );		/* catch it quick */
+    asm( "	movl	sp,r10" );		/* catch it quick */
 #endif not lint
     for ( argv = targv = &kfp -> kargv[0] ; *targv++ ; /* void */ )
 	/* VOID */ ;
@@ -89,6 +90,7 @@ static unsigned short	tolimit = 0;
 static char		*s_lowpc = 0;
 static char		*s_highpc = 0;
 static unsigned long	s_textsize = 0;
+static char		*minsbrk = 0;
 
 static int	ssiz;
 static int	*sbuf;
@@ -296,3 +298,23 @@ monitor( lowpc , highpc , buf , bufsiz )
 	o = 65536;
     profil( buf , bufsiz , lowpc , o );
 }
+
+/*
+ * This is a stub for the "brk" system call, which we want to
+ * catch so that it will not deallocate our data space.
+ * (of which the program is not aware)
+ */
+asm("#define _curbrk curbrk");
+extern char *curbrk;
+
+brk(addr)
+	char *addr;
+{
+
+	if (addr < minsbrk)
+		addr = minsbrk;
+	asm("	chmk	$17");
+	asm("	jcs	cerror");
+	curbrk = addr;
+	return (0);
+}