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Added preliminary support for execve(). Updates to clone, fork, exit, task handling.

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It turned out we used one version of kmalloc for malloc() and another for kfree()!
Now fixed.
Added parent-child relationship to tasks. Need to polish handling CLONE_PARENT and THREAD.
This commit is contained in:
Bahadir Balban
2008-11-19 12:59:52 +02:00
parent d182b5b35a
commit 46937eab88
39 changed files with 502 additions and 1192 deletions
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19
tasks/mm0/src/init.c
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@@ -7,7 +7,7 @@
#include <string.h>
#include <memory.h>
#include <mm/alloc_page.h>
#include <kmalloc/kmalloc.h>
#include <lib/malloc.h>
#include <l4lib/arch/syscalls.h>
#include <l4lib/arch/syslib.h>
#include <l4lib/utcb.h>
@@ -17,6 +17,7 @@
#include <init.h>
#include <utcb.h>
#include <test.h>
#include <boot.h>
/* A separate list than the generic file list that keeps just the boot files */
LIST_HEAD(boot_file_list);
@@ -44,12 +45,16 @@ int mm0_task_init(struct vm_file *f, unsigned long task_start,
task->spid = ids->spid;
task->tgid = ids->tgid;
if ((err = task_setup_regions(f, task, task_start, task_end)) < 0)
if ((err = boottask_setup_regions(f, task, task_start, task_end)) < 0)
return err;
if ((err = task_mmap_regions(task, f)) < 0)
if ((err = boottask_mmap_regions(task, f)) < 0)
return err;
/* Set pager as child and parent of itself */
list_add(&task->child_ref, &task->children);
task->parent = task;
/* Add the task to the global task list */
global_add_task(task);
@@ -118,7 +123,7 @@ int start_boot_tasks(struct initdata *initdata)
ids.tgid = VFS_TID;
printf("%s: Initialising fs0\n",__TASKNAME__);
BUG_ON((IS_ERR(fs0_task = task_exec(fs0_file, USER_AREA_START, USER_AREA_END, &ids))));
BUG_ON((IS_ERR(fs0_task = boottask_exec(fs0_file, USER_AREA_START, USER_AREA_END, &ids))));
total++;
/* Initialise other tasks */
@@ -128,7 +133,7 @@ int start_boot_tasks(struct initdata *initdata)
ids.spid = TASK_ID_INVALID;
ids.tgid = TASK_ID_INVALID;
list_del_init(&file->list);
BUG_ON(IS_ERR(task_exec(file, USER_AREA_START, USER_AREA_END, &ids)));
BUG_ON(IS_ERR(boottask_exec(file, USER_AREA_START, USER_AREA_END, &ids)));
total++;
}
@@ -151,10 +156,6 @@ void init_mm(struct initdata *initdata)
init_page_allocator(membank[0].free, membank[0].end);
// printf("%s: Initialised page allocator.\n", __TASKNAME__);
/* Initialise the pager's memory allocator */
kmalloc_init();
// printf("%s: Initialised kmalloc.\n", __TASKNAME__);
/* Initialise the zero page */
init_devzero();
// printf("%s: Initialised devzero.\n", __TASKNAME__);