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Revised task initialisation, revising mmap yet.

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This commit is contained in:
Bahadir Balban
2008-03-06 20:55:46 +00:00
parent 5681f3d1cb
commit 783904574d
12 changed files with 589 additions and 308 deletions
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58
tasks/mm0/src/boot.c
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@@ -1,58 +0,0 @@
#define vm_object_to_file(obj) \
(struct vm_file *)container_of(obj, struct vm_file, vm_obj)
/* Returns the page with given offset in this vm_object */
struct page *devzero_pager_page_in(struct vm_object *vm_obj,
unsigned long page_offset)
{
struct vm_file *devzero = container_of(vm_obj, struct vm_file, vm_obj);
struct page *zpage = devzero->priv_data;
/* Update zero page struct. */
spin_lock(&page->lock);
zpage->count++;
spin_unlock(&page->lock);
return zpage;
}
struct page *device_page_in(struct vm_object *vm_obj,
unsigned long page_offset)
{
struct vm_file *dev_file;
BUG_ON(vm_obj->type != VM_OBJ_DEVICE);
dev_file = vm_object_to_file(vm_obj);
}
struct vm_pager device_pager {
.page_in = device_page_in,
};
LIST_HEAD(&boot_files);
/* From bare boot images, create mappable device files */
int init_boot_files(struct initdata *initdata)
{
int err;
struct svc_image *img;
unsigned int sp, pc;
struct tcb *task;
struct task_ids ids;
struct bootdesc *bd;
struct vm_file *boot_file;
bd = initdata->bootdesc;
for (int i = 0; i < bd->total_images; i++) {
img = &bd->images[i];
boot_file = kzalloc(sizeof(struct vm_file));
INIT_LIST_HEAD(&boot_file->vm_obj.list);
boot_file->priv_data = img;
boot_file->length = img->phys_end - img->phys_start;
boot_file->pager = &device_pager;
list_add(&boot_file->vm_obj.list, &boot_files);
}
}