bsd-user/i386/target_arch_thread.h

   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() */
  23 static 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
  29 static 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_ */