Changeset 11928d5 in mainline for arch/ia32/src

Timestamp:

2006-04-28T14:32:44Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

a98cdc7

Parents:

040e4e9

Message:

Fix BITS2BYTES macro to return 0 when passed 0 as argument.
Fix ia32 TSS segment granularity to be 0.
Fix ia32 and amd64 initial TSS limit to be 103.
Little textual changes here and there.

Location:

arch/ia32/src

Files:

• pm.c (modified) (2 diffs)
• proc/scheduler.c (modified) (2 diffs)

arch/ia32/src/pm.c

@@ -200 +200 @@
         gdt_p[TSS_DES].access = AR_PRESENT | AR_TSS | DPL_KERNEL;
         gdt_p[TSS_DES].special = 1;
-        gdt_p[TSS_DES].granularity = 1;
+        gdt_p[TSS_DES].granularity = 0;
         
         gdt_setbase(&gdt_p[TSS_DES], (__address) tss_p);
-        gdt_setlimit(&gdt_p[TSS_DES], sizeof(tss_t) - 1);
+        gdt_setlimit(&gdt_p[TSS_DES], TSS_BASIC_SIZE - 1);
 
         /*
@@ -211 +211 @@
         tr_load(selector(TSS_DES));
         
-        clean_IOPL_NT_flags();    /* Disable I/O on nonprivileged levels */
+        clean_IOPL_NT_flags();    /* Disable I/O on nonprivileged levels and clear NT flag. */
         clean_AM_flag();          /* Disable alignment check */
 }

arch/ia32/src/proc/scheduler.c

@@ -37 +37 @@
 #include <arch/asm.h>
 #include <adt/bitmap.h>
+#include <print.h>
 
 /** Perform ia32 specific tasks needed before the new task is run.
@@ -56 +57 @@
         if ((bits = TASK->arch.iomap.bits)) {
                 bitmap_t iomap;
-
+        
                 ASSERT(TASK->arch.iomap.map);
                 bitmap_initialize(&iomap, CPU->arch.tss->iomap, TSS_IOMAP_SIZE * 8);