From a74bdeb7d109443c9e5e0c792c2259175cb4174b Mon Sep 17 00:00:00 2001
From: peter <peter@FreeBSD.org>
Date: Mon, 19 Apr 1999 14:14:14 +0000
Subject: unifdef -DVM_STACK - it's been on for a while for x86 and was checked
 and appeared to be working for the Alpha some time ago.

---
 sys/kern/kern_exec.c | 19 +------------------
 sys/kern/subr_trap.c | 32 +-------------------------------
 2 files changed, 2 insertions(+), 49 deletions(-)

(limited to 'sys/kern')

diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c
index c96055d..9e85104 100644
--- a/sys/kern/kern_exec.c
+++ b/sys/kern/kern_exec.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: kern_exec.c,v 1.96 1999/02/19 14:25:34 luoqi Exp $
+ *	$Id: kern_exec.c,v 1.97 1999/04/03 22:20:01 jdp Exp $
  */
 
 #include <sys/param.h>
@@ -428,11 +428,7 @@ exec_new_vmspace(imgp)
 {
 	int error;
 	struct vmspace *vmspace = imgp->proc->p_vmspace;
-#ifdef VM_STACK
 	caddr_t	stack_addr = (caddr_t) (USRSTACK - MAXSSIZ);
-#else
-	caddr_t	stack_addr = (caddr_t) (USRSTACK - SGROWSIZ);
-#endif
 	vm_map_t map = &vmspace->vm_map;
 
 	imgp->vmspace_destroyed = 1;
@@ -454,7 +450,6 @@ exec_new_vmspace(imgp)
 	}
 
 	/* Allocate a new stack */
-#ifdef VM_STACK
 	error = vm_map_stack (&vmspace->vm_map, (vm_offset_t)stack_addr,
 			      (vm_size_t)MAXSSIZ, VM_PROT_ALL, VM_PROT_ALL, 0);
 	if (error)
@@ -466,18 +461,6 @@ exec_new_vmspace(imgp)
 	 */
 	vmspace->vm_ssize = SGROWSIZ >> PAGE_SHIFT;
 	vmspace->vm_maxsaddr = (char *)USRSTACK - MAXSSIZ;
-#else
-	error = vm_map_insert(&vmspace->vm_map, NULL, 0,
-		(vm_offset_t) stack_addr, (vm_offset_t) USRSTACK,
-		VM_PROT_ALL, VM_PROT_ALL, 0);
-	if (error)
-		return (error);
-
-	vmspace->vm_ssize = SGROWSIZ >> PAGE_SHIFT;
-
-	/* Initialize maximum stack address */
-	vmspace->vm_maxsaddr = (char *)USRSTACK - MAXSSIZ;
-#endif
 
 	return(0);
 }
diff --git a/sys/kern/subr_trap.c b/sys/kern/subr_trap.c
index 4498e99..d08306e 100644
--- a/sys/kern/subr_trap.c
+++ b/sys/kern/subr_trap.c
@@ -35,7 +35,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)trap.c	7.4 (Berkeley) 5/13/91
- *	$Id: trap.c,v 1.133 1999/01/06 23:05:36 julian Exp $
+ *	$Id: trap.c,v 1.134 1999/03/09 20:20:09 phk Exp $
  */
 
 /*
@@ -666,16 +666,6 @@ trap_pfault(frame, usermode, eva)
 		/*
 		 * Grow the stack if necessary
 		 */
-#ifndef VM_STACK
-		if ((caddr_t)va > vm->vm_maxsaddr && va < USRSTACK) {
-			if (!grow(p, va)) {
-				rv = KERN_FAILURE;
-				--p->p_lock;
-				goto nogo;
-			}
-		}
-
-#else
 		/* grow_stack returns false only if va falls into
 		 * a growable stack region and the stack growth
 		 * fails.  It returns true if va was not within
@@ -687,7 +677,6 @@ trap_pfault(frame, usermode, eva)
 			--p->p_lock;
 			goto nogo;
 		}
-#endif
 		
 		/* Fault in the user page: */
 		rv = vm_fault(map, va, ftype,
@@ -791,15 +780,6 @@ trap_pfault(frame, usermode, eva)
 		/*
 		 * Grow the stack if necessary
 		 */
-#ifndef VM_STACK
-		if ((caddr_t)va > vm->vm_maxsaddr && va < USRSTACK) {
-			if (!grow(p, va)) {
-				rv = KERN_FAILURE;
-				--p->p_lock;
-				goto nogo;
-			}
-		}
-#else
 		/* grow_stack returns false only if va falls into
 		 * a growable stack region and the stack growth
 		 * fails.  It returns true if va was not within
@@ -811,7 +791,6 @@ trap_pfault(frame, usermode, eva)
 			--p->p_lock;
 			goto nogo;
 		}
-#endif
 
 		/* Fault in the user page: */
 		rv = vm_fault(map, va, ftype,
@@ -999,19 +978,10 @@ int trapwrite(addr)
 
 	++p->p_lock;
 
-#ifndef VM_STACK
-	if ((caddr_t)va >= vm->vm_maxsaddr && va < USRSTACK) {
-		if (!grow(p, va)) {
-			--p->p_lock;
-			return (1);
-		}
-	}
-#else
 	if (!grow_stack (p, va)) {
 		--p->p_lock;
 		return (1);
 	}
-#endif
 
 	/*
 	 * fault the data page
-- 
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