LXR qemu/bsd-user/i386/target_arch

   1/*
   2 *  i386 thread support
   3 *
   4 *  Copyright (c) 2013 Stacey D. Son
   5 *
   6 *  This program is free software; you can redistribute it and/or modify
   7 *  it under the terms of the GNU General Public License as published by
   8 *  the Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19#ifndef _TARGET_ARCH_THREAD_H_
  20#define _TARGET_ARCH_THREAD_H_
  21
  22/* Compare to vm_machdep.c cpu_set_upcall_kse() */
  23static inline void target_thread_set_upcall(CPUX86State *regs, abi_ulong entry,
  24    abi_ulong arg, abi_ulong stack_base, abi_ulong stack_size)
  25{
  26    /* XXX */
  27}
  28
  29static inline void target_thread_init(struct target_pt_regs *regs,
  30        struct image_info *infop)
  31{
  32    regs->esp = infop->start_stack;
  33    regs->eip = infop->entry;
  34
  35    /*
  36     * SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
  37     * contains a pointer to a function which might be registered using
  38     * `atexit'.  This provides a mean for the dynamic linker to call DT_FINI
  39     * functions for shared libraries that have been loaded before the code
  40     * runs.
  41     *
  42     * A value of 0 tells we have no such handler.
  43     */
  44    regs->edx = 0;
  45}
  46
  47#endif /* !_TARGET_ARCH_THREAD_H_ */
  48