Changeset 1f12fab in mainline for kernel/arch/sparc32/src/mm/frame.c

Timestamp:

2013-10-07T20:00:34Z (11 years ago)

Author:

Jakub Klama <jakub.klama@…>

Branches:

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

Children:

a73ebf0

Parents:

80d9d83

Message:

First attempt to implement preemptive trap handlers
and switch to userspace. Preemptive traps are needed
for at least page faults, as page fault handling code
can trigger window underflow/overflow exceptions.

This commit also introduces userspace window buffer
for saving userspace register windows (just as in
sparc64).

These changes are unfinished and far from working
correctly.

File:

• kernel/arch/sparc32/src/mm/frame.c (modified) (3 diffs)

kernel/arch/sparc32/src/mm/frame.c

@@ -60 +60 @@
                     BOOT_PT_START_FRAME + BOOT_PT_SIZE_FRAMES,
                     ZONE_AVAILABLE | ZONE_LOWMEM);
+
+                printf("low_zone: %d frames\n", SIZE2FRAMES(size));
         } else {
                 pfn_t conf = zone_external_conf_alloc(SIZE2FRAMES(size));
@@ -65 +67 @@
                         zone_create(ADDR2PFN(base), SIZE2FRAMES(size), conf,
                             ZONE_AVAILABLE | ZONE_HIGHMEM);
+
+                printf("high zone: %d frames\n", SIZE2FRAMES(size));
         }
-        
+
+        printf("free: %d\n", frame_total_free_get());
 }
 
@@ -81 +86 @@
         /* blacklist boot page table */
         frame_mark_unavailable(BOOT_PT_START_FRAME, BOOT_PT_SIZE_FRAMES);
+        printf("free: %d\n", frame_total_free_get());
         //machine_frame_init();
 }