1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
4 | */ |
5 | |
6 | #include <linux/stddef.h> |
7 | #include <linux/module.h> |
8 | #include <linux/fs.h> |
9 | #include <linux/ptrace.h> |
10 | #include <linux/sched/mm.h> |
11 | #include <linux/sched/task.h> |
12 | #include <linux/sched/task_stack.h> |
13 | #include <linux/slab.h> |
14 | #include <asm/current.h> |
15 | #include <asm/processor.h> |
16 | #include <linux/uaccess.h> |
17 | #include <as-layout.h> |
18 | #include <mem_user.h> |
19 | #include <registers.h> |
20 | #include <skas.h> |
21 | #include <os.h> |
22 | |
23 | void flush_thread(void) |
24 | { |
25 | void *data = NULL; |
26 | int ret; |
27 | |
28 | arch_flush_thread(¤t->thread.arch); |
29 | |
30 | ret = unmap(¤t->mm->context.id, 0, TASK_SIZE, 1, &data); |
31 | if (ret) { |
32 | printk(KERN_ERR "%s - clearing address space failed, err = %d\n" , |
33 | __func__, ret); |
34 | force_sig(SIGKILL); |
35 | } |
36 | get_safe_registers(current_pt_regs()->regs.gp, |
37 | current_pt_regs()->regs.fp); |
38 | |
39 | __switch_mm(¤t->mm->context.id); |
40 | } |
41 | |
42 | void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp) |
43 | { |
44 | PT_REGS_IP(regs) = eip; |
45 | PT_REGS_SP(regs) = esp; |
46 | clear_thread_flag(TIF_SINGLESTEP); |
47 | #ifdef SUBARCH_EXECVE1 |
48 | SUBARCH_EXECVE1(regs->regs); |
49 | #endif |
50 | } |
51 | EXPORT_SYMBOL(start_thread); |
52 | |