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Do not affect CPU state if any exception occured - in this case do not write to MEM and flags

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This commit is contained in:
Stanislav Shwartsman 2007-12-03 20:48:02 +00:00
parent 17af54cbbb
commit dbfa7a51e9
2 changed files with 6 additions and 6 deletions
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6
bochs/cpu/arith32.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: arith32.cc,v 1.64 2007-12-01 16:45:16 sshwarts Exp $
// $Id: arith32.cc,v 1.65 2007-12-03 20:48:02 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
@ -707,10 +707,10 @@ void BX_CPU_C::CMPXCHG8B(bxInstruction_c *i)
diff |= EDX - op1_64_hi;
if (diff == 0) { // if accumulator == dest
assert_ZF();
// dest <-- src
write_RMW_virtual_dword(ECX);
write_virtual_dword(i->seg(), RMAddr(i), &EBX);
write_RMW_virtual_dword(ECX);
assert_ZF();
}
else {
clear_ZF();

6
bochs/cpu/arith64.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: arith64.cc,v 1.40 2007-11-21 22:36:01 sshwarts Exp $
// $Id: arith64.cc,v 1.41 2007-12-03 20:48:02 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
@ -685,10 +685,10 @@ void BX_CPU_C::CMPXCHG16B(bxInstruction_c *i)
diff |= RDX - op1_64_hi;
if (diff == 0) { // if accumulator == dest
assert_ZF();
// dest <-- src
write_RMW_virtual_qword(RCX);
write_virtual_qword(i->seg(), RMAddr(i), &RBX);
write_RMW_virtual_qword(RCX);
assert_ZF();
}
else {
clear_ZF();