summaryrefslogtreecommitdiff
path: root/sys/arch/macppc/include
diff options
context:
space:
mode:
authorKurt Miller <kurt@cvs.openbsd.org>2008-07-18 16:40:18 +0000
committerKurt Miller <kurt@cvs.openbsd.org>2008-07-18 16:40:18 +0000
commit9d741144290ccbc0fa7905a4b2359a24d7606fbd (patch)
treeaaf5480cc97ddb01e80b6498db6c60b3f8610427 /sys/arch/macppc/include
parent98b4cba6a75c90bb5103f54759d0b1b7a886ed22 (diff)
Add new uvm function called uvm_map_pie() which takes align as a
parameter and returns an aligned random load address for position independent executables to use. This also adds three new vmparam.h defines to specify the maximum address, minimum address and minimum allowed alignment for uvm_map_pie() to use. The PIE address range for i386 was carefully selected to work well within the i386 W^X framework. With much help and feedback from weingart@. okay weingart@, miod@, kettenis@, drahn@
Diffstat (limited to 'sys/arch/macppc/include')
-rw-r--r--sys/arch/macppc/include/vmparam.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/arch/macppc/include/vmparam.h b/sys/arch/macppc/include/vmparam.h
index ab20ab911a9..c0fcbd26b80 100644
--- a/sys/arch/macppc/include/vmparam.h
+++ b/sys/arch/macppc/include/vmparam.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: vmparam.h,v 1.19 2007/06/14 14:27:46 drahn Exp $ */
+/* $OpenBSD: vmparam.h,v 1.20 2008/07/18 16:40:17 kurt Exp $ */
/* $NetBSD: vmparam.h,v 1.1 1996/09/30 16:34:38 ws Exp $ */
/*-
@@ -80,6 +80,10 @@
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)(PPC_KERNEL_SR << ADDR_SR_SHIFT))
+/* map PIE into approximately the first quarter of user va space */
+#define VM_PIE_MIN_ADDR PAGE_SIZE
+#define VM_PIE_MAX_ADDR 0x40000000
+
/* ppc_kvm_stolen is so that vm space can be stolen before vm is fully
* initialized.
*/