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Added some privileged instructions emulation.

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Ivan Leo Puoti 2005-05-27 19:30:22 +00:00 committed by Alexandre Julliard
parent b69e7a19d5
commit eeb0a90ec9
1 changed files with 25 additions and 3 deletions
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28
dlls/kernel/instr.c
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@ -2,6 +2,8 @@
* Emulation of privileged instructions
*
* Copyright 1995 Alexandre Julliard
* Copyright 2005 Ivan Leo Puoti
* Copyright 2005 Laurent Pinchart
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -537,15 +539,35 @@ DWORD INSTR_EmulateInstruction( EXCEPTION_RECORD *rec, CONTEXT86 *context )
case 0x21: /* mov drX, eax */
switch (instr[2])
{
case 0xc8: /* mov dr1, eax */
context->ContextFlags = CONTEXT_DEBUG_REGISTERS;
NtGetContextThread( GetCurrentThread(), context );
TRACE("mov dr1,eax at 0x%08lx\n",context->Eip);
context->Eax = context->Dr1;
context->Eip += prefixlen+3;
return ExceptionContinueExecution;
case 0xf8: /* mov dr7, eax */
TRACE("mov dr7,eax at 0x%08lx\n",context->Eip);
context->Eax = 0x400;
context->Eip += prefixlen+3;
return ExceptionContinueExecution;
default: /* fallthrough to illegal instruction */
ERR("Unknown DR register, eip+2 is %02x\n", instr[2]);
break;
}
ERR("Unsupported DR register, eip+2 is %02x\n", instr[2]);
/* fallthrough to illegal instruction */
break;
case 0x23: /* mov eax drX */
switch (instr[2])
{
case 0xc8: /* mov eax, dr1 */
context->ContextFlags = CONTEXT_DEBUG_REGISTERS;
NtGetContextThread( GetCurrentThread(), context );
context->Dr1 = context->Eax;
context->Eip += prefixlen+3;
context->ContextFlags = CONTEXT_DEBUG_REGISTERS;
NtSetContextThread( GetCurrentThread(), context );
return ExceptionContinueExecution;
}
ERR("Unsupported DR register, eip+2 is %02x\n", instr[2]);
/* fallthrough to illegal instruction */
break;
case 0xa1: /* pop fs */