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/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/kernel.h"
#include "linux/mm.h"
#include "asm/signal.h"
#include "asm/ptrace.h"
#include "asm/uaccess.h"
#include "asm/pgalloc.h"
#include "asm/tlbflush.h"
#include "user_util.h"
#include "kern_util.h"
#include "irq_user.h"
#include "mem_user.h"
#include "os.h"
#include "tlb.h"
#include "mode.h"
static int exec_tramp(void *sig_stack)
{
init_new_thread_stack(sig_stack, NULL);
init_new_thread_signals();
os_stop_process(os_getpid());
return(0);
}
void flush_thread_tt(void)
{
unsigned long stack;
int new_pid;
stack = alloc_stack(0, 0);
if(stack == 0){
printk(KERN_ERR
"flush_thread : failed to allocate temporary stack\n");
do_exit(SIGKILL);
}
new_pid = start_fork_tramp(task_stack_page(current), stack, 0, exec_tramp);
if(new_pid < 0){
printk(KERN_ERR
"flush_thread : new thread failed, errno = %d\n",
-new_pid);
do_exit(SIGKILL);
}
if(current_thread->cpu == 0)
forward_interrupts(new_pid);
current->thread.request.op = OP_EXEC;
current->thread.request.u.exec.pid = new_pid;
unprotect_stack((unsigned long) current_thread);
os_usr1_process(os_getpid());
change_sig(SIGUSR1, 1);
change_sig(SIGUSR1, 0);
enable_timer();
free_page(stack);
protect_memory(uml_reserved, high_physmem - uml_reserved, 1, 1, 0, 1);
task_protections((unsigned long) current_thread);
force_flush_all();
unblock_signals();
}
void start_thread_tt(struct pt_regs *regs, unsigned long eip,
unsigned long esp)
{
set_fs(USER_DS);
flush_tlb_mm(current->mm);
PT_REGS_IP(regs) = eip;
PT_REGS_SP(regs) = esp;
PT_FIX_EXEC_STACK(esp);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
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