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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.h> | |
11 | #include <linux/slab.h> | |
12 | #include <asm/current.h> | |
13 | #include <asm/processor.h> | |
14 | #include <linux/uaccess.h> | |
15 | #include <as-layout.h> | |
16 | #include <mem_user.h> | |
17 | #include <skas.h> | |
18 | #include <os.h> | |
19 | ||
20 | void flush_thread(void) | |
21 | { | |
22 | void *data = NULL; | |
23 | int ret; | |
24 | ||
25 | arch_flush_thread(¤t->thread.arch); | |
26 | ||
27 | ret = unmap(¤t->mm->context.id, 0, STUB_START, 0, &data); | |
28 | ret = ret || unmap(¤t->mm->context.id, STUB_END, | |
29 | host_task_size - STUB_END, 1, &data); | |
30 | if (ret) { | |
31 | printk(KERN_ERR "flush_thread - clearing address space failed, " | |
32 | "err = %d\n", ret); | |
33 | force_sig(SIGKILL, current); | |
34 | } | |
35 | get_safe_registers(current_pt_regs()->regs.gp, | |
36 | current_pt_regs()->regs.fp); | |
37 | ||
38 | __switch_mm(¤t->mm->context.id); | |
39 | } | |
40 | ||
41 | void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp) | |
42 | { | |
43 | PT_REGS_IP(regs) = eip; | |
44 | PT_REGS_SP(regs) = esp; | |
45 | current->ptrace &= ~PT_DTRACE; | |
46 | #ifdef SUBARCH_EXECVE1 | |
47 | SUBARCH_EXECVE1(regs->regs); | |
48 | #endif | |
49 | } | |
50 | EXPORT_SYMBOL(start_thread); |