forked from xuos/xiuos
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
/*
|
|
* Copyright (c) 2020 AIIT XUOS Lab
|
|
* XiUOS is licensed under Mulan PSL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PSL v2.
|
|
* You may obtain a copy of Mulan PSL v2 at:
|
|
* http://license.coscl.org.cn/MulanPSL2
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PSL v2 for more details.
|
|
*/
|
|
/**
|
|
* @file sys_spawn.c
|
|
* @brief spawn a task
|
|
* @version 3.0
|
|
* @author AIIT XUOS Lab
|
|
* @date 2023.08.25
|
|
*/
|
|
|
|
/*************************************************
|
|
File name: sys_spawn.c
|
|
Description: spawn a task
|
|
Others:
|
|
History:
|
|
1. Date: 2023-08-28
|
|
Author: AIIT XUOS Lab
|
|
Modification:
|
|
1. first version
|
|
*************************************************/
|
|
#include "actracer.h"
|
|
#include "assert.h"
|
|
#include "memspace.h"
|
|
#include "share_page.h"
|
|
#include "syscall.h"
|
|
#include "task.h"
|
|
|
|
extern int task_exec(struct Thread* task, char* img_start, char* name, char** argv);
|
|
int sys_spawn(char* img_start, char* name, char** argv)
|
|
{
|
|
// alloc a new memspace
|
|
struct MemSpace* pmemspace = alloc_memspace();
|
|
if (pmemspace == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
// load memspace
|
|
uintptr_t* entry = load_memspace(pmemspace, img_start);
|
|
if (NULL == entry) {
|
|
ERROR("Loading memspace from %016x failed.\n", img_start);
|
|
free_memspace(pmemspace);
|
|
return -1;
|
|
}
|
|
|
|
// alloc a new pcb
|
|
struct Thread* new_task_cb = xizi_task_manager.new_task_cb(pmemspace);
|
|
if (UNLIKELY(!new_task_cb)) {
|
|
ERROR("Unable to new task control block.\n");
|
|
free_memspace(pmemspace);
|
|
return -1;
|
|
}
|
|
assert(!IS_DOUBLE_LIST_EMPTY(&pmemspace->thread_list_guard));
|
|
|
|
// init params
|
|
struct ThreadStackPointer loaded_sp = load_user_stack(pmemspace, argv);
|
|
if (loaded_sp.stack_idx == -1) {
|
|
ERROR("Uable to load params to memspace.\n");
|
|
/* memspace is freed alone with free_pcb() */
|
|
xizi_task_manager.free_pcb(new_task_cb);
|
|
return -1;
|
|
}
|
|
|
|
// init trapframe
|
|
new_task_cb->thread_context.user_stack_idx = loaded_sp.stack_idx;
|
|
new_task_cb->thread_context.uspace_stack_addr = USER_MEM_TOP - ((loaded_sp.stack_idx + 1) * USER_STACK_SIZE);
|
|
new_task_cb->thread_context.ustack_kvaddr = loaded_sp.user_stack_vaddr;
|
|
arch_init_trapframe(new_task_cb->thread_context.trapframe, 0, 0);
|
|
arch_trapframe_set_sp_pc(new_task_cb->thread_context.trapframe, loaded_sp.user_sp, (uintptr_t)entry);
|
|
arch_set_main_params(new_task_cb->thread_context.trapframe, loaded_sp.argc, loaded_sp.user_sp);
|
|
|
|
// init thread name
|
|
char* last = NULL;
|
|
for (last = name; *name; name++) {
|
|
if (*name == '/') {
|
|
last = name + 1;
|
|
}
|
|
}
|
|
strncpy(new_task_cb->name, last, sizeof(new_task_cb->name));
|
|
|
|
// init pcb schedule attributes
|
|
xizi_task_manager.task_set_default_schedule_attr(new_task_cb);
|
|
|
|
return 0;
|
|
} |