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When printing a directory tree, indicate explicitly if it's empty.
[pintos-anon]
/
src
/
threads
/
init.c
diff --git
a/src/threads/init.c
b/src/threads/init.c
index 458f67cb2bbd7a7424950d8a219c9f08747c30f8..5893ce970b21fe12f707e4c3be55767e31c0034f 100644
(file)
--- a/
src/threads/init.c
+++ b/
src/threads/init.c
@@
-41,11
+41,6
@@
size_t ram_pages;
/* Page directory with kernel mappings only. */
uint32_t *base_page_dir;
/* Page directory with kernel mappings only. */
uint32_t *base_page_dir;
-/* -mlfqs:
- If false (default), use round-robin scheduler.
- If true, use multi-level feedback queue scheduler. */
-bool enable_mlfqs;
-
#ifdef FILESYS
/* -f: Format the file system? */
static bool format_filesys;
#ifdef FILESYS
/* -f: Format the file system? */
static bool format_filesys;
@@
-76,23
+71,17
@@
main (void)
/* Clear BSS and get machine's RAM size. */
ram_init ();
/* Clear BSS and get machine's RAM size. */
ram_init ();
- /* Initialize ourselves as a thread so we can use locks. */
- thread_init ();
-
- /* Initialize the console so we can use printf(). */
- vga_init ();
- serial_init_poll ();
- console_init ();
-
- /* Greet user. */
- printf ("Pintos booting with %'zu kB RAM...\n", ram_pages * PGSIZE / 1024);
-
/* Break command line into arguments and parse options. */
argv = read_command_line ();
argv = parse_options (argv);
/* Break command line into arguments and parse options. */
argv = read_command_line ();
argv = parse_options (argv);
- /* Set random seed if parse_options() didn't. */
- random_init (0);
+ /* Initialize ourselves as a thread so we can use locks,
+ then enable console locking. */
+ thread_init ();
+ console_init ();
+
+ /* Greet user. */
+ printf ("Pintos booting with %'zu kB RAM...\n", ram_pages * PGSIZE / 1024);
/* Initialize memory system. */
palloc_init ();
/* Initialize memory system. */
palloc_init ();
@@
-168,15
+157,17
@@
paging_init (void)
{
uint32_t *pd, *pt;
size_t page;
{
uint32_t *pd, *pt;
size_t page;
+ extern char _start, _end_kernel_text;
pd = base_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);
pt = NULL;
for (page = 0; page < ram_pages; page++)
{
uintptr_t paddr = page * PGSIZE;
pd = base_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);
pt = NULL;
for (page = 0; page < ram_pages; page++)
{
uintptr_t paddr = page * PGSIZE;
-
void
*vaddr = ptov (paddr);
+
char
*vaddr = ptov (paddr);
size_t pde_idx = pd_no (vaddr);
size_t pte_idx = pt_no (vaddr);
size_t pde_idx = pd_no (vaddr);
size_t pte_idx = pt_no (vaddr);
+ bool in_kernel_text = &_start <= vaddr && vaddr < &_end_kernel_text;
if (pd[pde_idx] == 0)
{
if (pd[pde_idx] == 0)
{
@@
-184,7
+175,7
@@
paging_init (void)
pd[pde_idx] = pde_create (pt);
}
pd[pde_idx] = pde_create (pt);
}
- pt[pte_idx] = pte_create_kernel (vaddr,
true
);
+ pt[pte_idx] = pte_create_kernel (vaddr,
!in_kernel_text
);
}
/* Store the physical address of the page directory into CR3
}
/* Store the physical address of the page directory into CR3
@@
-192,7
+183,7
@@
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". */
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 (base_page_dir)));
}
/* Breaks the kernel command line into words and returns them as
}
/* Breaks the kernel command line into words and returns them as
@@
-252,7
+243,7
@@
parse_options (char **argv)
else if (!strcmp (name, "-rs"))
random_init (atoi (value));
else if (!strcmp (name, "-mlfqs"))
else if (!strcmp (name, "-rs"))
random_init (atoi (value));
else if (!strcmp (name, "-mlfqs"))
-
enable
_mlfqs = true;
+
thread
_mlfqs = true;
#ifdef USERPROG
else if (!strcmp (name, "-ul"))
user_page_limit = atoi (value);
#ifdef USERPROG
else if (!strcmp (name, "-ul"))
user_page_limit = atoi (value);
@@
-385,7
+376,7
@@
power_off (void)
for (p = s; *p != '\0'; p++)
outb (0x8900, *p);
for (p = s; *p != '\0'; p++)
outb (0x8900, *p);
- asm
("cli; hlt
");
+ asm
volatile ("cli; hlt" : : : "memory
");
printf ("still running...\n");
for (;;);
}
printf ("still running...\n");
for (;;);
}