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