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/*
* 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__ */
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