Wine Cross Reference
wine/server/context_x86_64.c

   /*
    * x86-64 register context support
    *
    * Copyright (C) 1999, 2005 Alexandre Julliard
    *
    * This library is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Lesser General Public
    * License as published by the Free Software Foundation; either
    * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include "config.h"
  
  #ifdef __x86_64__
  
  #include <assert.h>
  #include <errno.h>
  #include <stdarg.h>
  #include <unistd.h>
  
  #define NONAMELESSUNION
  #include "windef.h"
  #include "winbase.h"
  
  #include "file.h"
  #include "thread.h"
  #include "request.h"
  
  /* copy a context structure according to the flags */
  void copy_context( CONTEXT *to, const CONTEXT *from, unsigned int flags )
  {
      flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
      if (flags & CONTEXT_CONTROL)
      {
          to->Rbp    = from->Rbp;
          to->Rip    = from->Rip;
          to->Rsp    = from->Rsp;
          to->SegCs  = from->SegCs;
          to->SegSs  = from->SegSs;
          to->EFlags = from->EFlags;
          to->MxCsr  = from->MxCsr;
      }
      if (flags & CONTEXT_INTEGER)
      {
          to->Rax = from->Rax;
          to->Rcx = from->Rcx;
          to->Rdx = from->Rdx;
          to->Rbx = from->Rbx;
          to->Rsi = from->Rsi;
          to->Rdi = from->Rdi;
          to->R8  = from->R8;
          to->R9  = from->R9;
          to->R10 = from->R10;
          to->R11 = from->R11;
          to->R12 = from->R12;
          to->R13 = from->R13;
          to->R14 = from->R14;
          to->R15 = from->R15;
      }
      if (flags & CONTEXT_SEGMENTS)
      {
          to->SegDs = from->SegDs;
          to->SegEs = from->SegEs;
          to->SegFs = from->SegFs;
          to->SegGs = from->SegGs;
      }
      if (flags & CONTEXT_FLOATING_POINT)
      {
          to->u.FltSave = from->u.FltSave;
      }
      /* we don't bother copying the debug registers, since they */
      /* always need to be accessed by ptrace anyway */
      to->ContextFlags |= flags & ~CONTEXT_DEBUG_REGISTERS;
  }
  
  /* retrieve the current instruction pointer of a context */
  void *get_context_ip( const CONTEXT *context )
  {
      return (void *)context->Rip;
  }
  
  /* return the context flag that contains the CPU id */
  unsigned int get_context_cpu_flag(void)
  {
      return CONTEXT_AMD64;
  }
  
  /* return only the context flags that correspond to system regs */
  /* (system regs are the ones we can't access on the client side) */
  unsigned int get_context_system_regs( unsigned int flags )
 {
     return flags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_AMD64);
 }
 
 #endif  /* __x86_64__ */