Changeset 20d50a1 in mainline for arch/ia32/src

Timestamp:

2006-01-13T13:02:45Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

f9425006

Parents:

0369911

Message:

Memory management work.

• vm.* → as.* (as like address space is, imho, more fitting)
• Don't do TLB shootdown on vm_install(). Some architectures only need to call tlb_invalidate_asid().
• Don't allocate all frames for as_area in as_area_create(), but let them be allocated on-demand by as_page_fault().
• Add high-level page fault handler as_page_fault().
• Add as_area_load_mapping().

Location:

arch/ia32/src

Files:

• interrupt.c (modified) (2 diffs)
• mm/frame.c (modified) (1 diff)
• userspace.c (modified) (3 diffs)

arch/ia32/src/interrupt.c

@@ -36 +36 @@
 #include <arch/asm.h>
 #include <mm/tlb.h>
+#include <mm/as.h>
 #include <arch.h>
 #include <symtab.h>
@@ -100 +101 @@
 void page_fault(int n, void *stack)
 {
-        PRINT_INFO_ERRCODE(stack);
-        printf("page fault address: %X\n", read_cr2());
-        panic("page fault\n");
+        __address page;
+
+        page = read_cr2();
+        if (!as_page_fault(page)) {
+                PRINT_INFO_ERRCODE(stack);
+                printf("page fault address: %X\n", page);
+                panic("page fault\n");
+        }
 }
 

arch/ia32/src/mm/frame.c

@@ -29 +29 @@
 #include <mm/frame.h>
 #include <arch/mm/frame.h>
-#include <mm/vm.h>
+#include <mm/as.h>
 #include <config.h>
 #include <arch/boot/boot.h>

arch/ia32/src/userspace.c

@@ -32 +32 @@
 #include <arch.h>
 #include <proc/thread.h>
-#include <mm/vm.h>
+#include <mm/as.h>
 
 
@@ -48 +48 @@
         __asm__ volatile (
                 /* CLNT */
-                "pushfl;"
-                "pop %%eax;"
-                "and $0xFFFFBFFF,%%eax;"
-                "push %%eax;"
-                "popfl;"
+                "pushfl\n"
+                "pop %%eax\n"
+                "and $0xffffbfff,%%eax\n"
+                "push %%eax\n"
+                "popfl\n"
 
                 "pushl %0\n"
@@ -65 +65 @@
         
         /* Unreachable */
-        for(;;);
+        for(;;)
+                ;
 }