1 /*
2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
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 <skas.h>
20 #include <os.h>
21
flush_thread(void)22 void flush_thread(void)
23 {
24 void *data = NULL;
25 int ret;
26
27 arch_flush_thread(¤t->thread.arch);
28
29 ret = unmap(¤t->mm->context.id, 0, STUB_START, 0, &data);
30 ret = ret || unmap(¤t->mm->context.id, STUB_END,
31 host_task_size - STUB_END, 1, &data);
32 if (ret) {
33 printk(KERN_ERR "flush_thread - clearing address space failed, "
34 "err = %d\n", ret);
35 force_sig(SIGKILL, current);
36 }
37 get_safe_registers(current_pt_regs()->regs.gp,
38 current_pt_regs()->regs.fp);
39
40 __switch_mm(¤t->mm->context.id);
41 }
42
start_thread(struct pt_regs * regs,unsigned long eip,unsigned long esp)43 void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
44 {
45 PT_REGS_IP(regs) = eip;
46 PT_REGS_SP(regs) = esp;
47 current->ptrace &= ~PT_DTRACE;
48 #ifdef SUBARCH_EXECVE1
49 SUBARCH_EXECVE1(regs->regs);
50 #endif
51 }
52 EXPORT_SYMBOL(start_thread);
53
