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
flush_thread(void)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
start_thread(struct pt_regs * regs,unsigned long eip,unsigned long esp)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