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 <asm/uaccess.h> 15#include <as-layout.h> 16#include <mem_user.h> 17#include <skas.h> 18#include <os.h> 19 20void 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 41void 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} 50EXPORT_SYMBOL(start_thread); 51