Changeset d364e94 in mainline for kernel/arch/sparc64/include/trap/regwin.h

Timestamp:

2008-10-02T20:24:01Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1d132ae

Parents:

c2ad500

Message:

Do not allocate full page for the uspace window buffer.
Instead, allocate only the bare minimum to fit NWINDOWS - 1
uspace windows and to satisfy alignment requirements.

File:

• kernel/arch/sparc64/include/trap/regwin.h (modified) (2 diffs)

kernel/arch/sparc64/include/trap/regwin.h

@@ -40 +40 @@
 #include <arch/stack.h>
 #include <arch/arch.h>
+#include <align.h>
 
 #define TT_CLEAN_WINDOW                 0x24
@@ -72 +73 @@
 #define I6_OFFSET       112
 #define I7_OFFSET       120
+
+/* Uspace Window Buffer constants. */
+#define UWB_SIZE        ((NWINDOWS - 1) * STACK_WINDOW_SAVE_AREA_SIZE)
+#define UWB_ALIGNMENT   1024
+#define UWB_ASIZE       ALIGN_UP(UWB_SIZE, UWB_ALIGNMENT)
 
 #ifdef __ASM__