Even more fixes! :^)

3 files changed, 12 insertions, 14 deletions

diff --git a/kernel/features/load.c b/kernel/features/load.c
index 079cbbe..d3f3495 100644
--- a/kernel/features/load.c
+++ b/kernel/features/load.c
@@ -119,8 +119,8 @@ s32 elf_load(const char *path, struct proc *proc)
 	memory_switch_dir(proc->page_dir);
 
 	u32 stack = (u32)memory_alloc(proc->page_dir, PROC_STACK_SIZE, MEMORY_USER | MEMORY_CLEAR);
-	proc->regs.ebp = stack + PROC_STACK_SIZE - 1;
-	proc->regs.useresp = stack + PROC_STACK_SIZE - 1;
+	proc->regs.ebp = stack + PROC_STACK_SIZE;
+	proc->regs.useresp = stack + PROC_STACK_SIZE;
 	proc->regs.eip = header.entry;
 	proc->entry = header.entry;
 
diff --git a/kernel/features/mm.c b/kernel/features/mm.c
index 01e21e7..b06657f 100644
--- a/kernel/features/mm.c
+++ b/kernel/features/mm.c
@@ -48,8 +48,8 @@ void page_fault_handler(struct regs *r)
 	struct page_dir *dir = NULL;
 	if (proc && proc->page_dir) {
 		dir = proc->page_dir;
-		printf("Stack is at %x, entry at %x\n", virtual_to_physical(dir, proc->regs.ebp),
-		       virtual_to_physical(dir, proc->entry));
+		/* printf("Stack is at %x, entry at %x\n", virtual_to_physical(dir, proc->regs.ebp), */
+		/*        virtual_to_physical(dir, proc->entry)); */
 	} else {
 		dir = &kernel_dir;
 	}
@@ -165,7 +165,7 @@ void physical_free(struct memory_range range)
  * Virtual
  */
 
-#define PDI(vaddr) (((vaddr) >> 22) & 0x03ff)
+#define PDI(vaddr) ((vaddr) >> 22)
 #define PTI(vaddr) (((vaddr) >> 12) & 0x03ff)
 
 u8 virtual_present(struct page_dir *dir, u32 vaddr)
@@ -210,15 +210,11 @@ void virtual_map(struct page_dir *dir, struct memory_range prange, u32 vaddr, u3
 		struct page_table *table =
 			(struct page_table *)(dir_entry->bits.address * PAGE_SIZE);
 
-		if (dir_entry->bits.present) {
-			// TODO: Is this a security risk?
-			if (flags & MEMORY_USER)
-				dir_entry->bits.user = 1;
-		} else {
+		if (!dir_entry->bits.present) {
 			table = memory_alloc_identity(dir, MEMORY_CLEAR);
 			dir_entry->bits.present = 1;
 			dir_entry->bits.writable = 1;
-			dir_entry->bits.user = flags & MEMORY_USER;
+			dir_entry->bits.user = 1;
 			dir_entry->bits.address = (u32)(table) >> 12;
 		}
 
diff --git a/kernel/features/proc.c b/kernel/features/proc.c
index aa595ff..5d3c8aa 100644
--- a/kernel/features/proc.c
+++ b/kernel/features/proc.c
@@ -81,11 +81,13 @@ void proc_print(void)
 {
 	struct node *node = proc_list->head;
 
-	printf("\nPROCESSES\n");
+	printf("--- PROCESSES ---\n");
 	struct proc *proc = NULL;
 	while (node && (proc = node->data)) {
-		printf("Process %d: %s [%s]\n", proc->pid, proc->name,
-		       proc->state == PROC_RUNNING ? "RUNNING" : "SLEEPING");
+		printf("Process %d: %s [%s] [entry: %x; stack: %x]\n", proc->pid, proc->name,
+		       proc->state == PROC_RUNNING ? "RUNNING" : "SLEEPING",
+		       virtual_to_physical(proc->page_dir, proc->entry),
+		       virtual_to_physical(proc->page_dir, proc->regs.ebp));
 		node = node->next;
 	}
 	printf("\n");