From fde3b8ee3eaf48b1a6bb14568aedc207e62accab Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@cs.stanford.edu>
Date: Thu, 6 Nov 2008 21:19:34 -0800
Subject: [PATCH] Rename base_page_dir to init_page_dir.

This makes its name fit the convention that the file name is used as
a prefix for global symbol names.

Found by Godmar with his process-linker-map.pl script.
---
 src/threads/init.c     | 8 ++++----
 src/threads/init.h     | 2 +-
 src/userprog/pagedir.c | 8 ++++----
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/threads/init.c b/src/threads/init.c
index a831a80..60d6c46 100644
--- a/src/threads/init.c
+++ b/src/threads/init.c
@@ -40,7 +40,7 @@
 size_t ram_pages;
 
 /* Page directory with kernel mappings only. */
-uint32_t *base_page_dir;
+uint32_t *init_page_dir;
 
 #ifdef FILESYS
 /* -f: Format the file system? */
@@ -152,7 +152,7 @@ ram_init (void)
 
 /* Populates the base page directory and page table with the
    kernel virtual mapping, and then sets up the CPU to use the
-   new page directory.  Points base_page_dir to the page
+   new page directory.  Points init_page_dir to the page
    directory it creates.
 
    At the time this function is called, the active page table
@@ -166,7 +166,7 @@ paging_init (void)
   size_t page;
   extern char _start, _end_kernel_text;
 
-  pd = base_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);
+  pd = init_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);
   pt = NULL;
   for (page = 0; page < ram_pages; page++) 
     {
@@ -190,7 +190,7 @@ paging_init (void)
      new page tables immediately.  See [IA32-v2a] "MOV--Move
      to/from Control Registers" and [IA32-v3a] 3.7.5 "Base Address
      of the Page Directory". */
-  asm volatile ("movl %0, %%cr3" : : "r" (vtop (base_page_dir)));
+  asm volatile ("movl %0, %%cr3" : : "r" (vtop (init_page_dir)));
 }
 
 /* Breaks the kernel command line into words and returns them as
diff --git a/src/threads/init.h b/src/threads/init.h
index 963cbd6..f28303c 100644
--- a/src/threads/init.h
+++ b/src/threads/init.h
@@ -10,7 +10,7 @@
 extern size_t ram_pages;
 
 /* Page directory with kernel mappings only. */
-extern uint32_t *base_page_dir;
+extern uint32_t *init_page_dir;
 
 /* -q: Power off when kernel tasks complete? */
 extern bool power_off_when_done;
diff --git a/src/userprog/pagedir.c b/src/userprog/pagedir.c
index 30bdfe2..1442d40 100644
--- a/src/userprog/pagedir.c
+++ b/src/userprog/pagedir.c
@@ -18,7 +18,7 @@ pagedir_create (void)
 {
   uint32_t *pd = palloc_get_page (0);
   if (pd != NULL)
-    memcpy (pd, base_page_dir, PGSIZE);
+    memcpy (pd, init_page_dir, PGSIZE);
   return pd;
 }
 
@@ -32,7 +32,7 @@ pagedir_destroy (uint32_t *pd)
   if (pd == NULL)
     return;
 
-  ASSERT (pd != base_page_dir);
+  ASSERT (pd != init_page_dir);
   for (pde = pd; pde < pd + pd_no (PHYS_BASE); pde++)
     if (*pde & PTE_P) 
       {
@@ -104,7 +104,7 @@ pagedir_set_page (uint32_t *pd, void *upage, void *kpage, bool writable)
   ASSERT (pg_ofs (kpage) == 0);
   ASSERT (is_user_vaddr (upage));
   ASSERT (vtop (kpage) >> PTSHIFT < ram_pages);
-  ASSERT (pd != base_page_dir);
+  ASSERT (pd != init_page_dir);
 
   pte = lookup_page (pd, upage, true);
 
@@ -220,7 +220,7 @@ void
 pagedir_activate (uint32_t *pd) 
 {
   if (pd == NULL)
-    pd = base_page_dir;
+    pd = init_page_dir;
 
   /* Store the physical address of the page directory into CR3
      aka PDBR (page directory base register).  This activates our
-- 
2.30.2