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Add debug prints for NX bit feature

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This commit is contained in:
Stanislav Shwartsman 2006-10-28 12:31:23 +00:00
parent 598c34ed0a
commit 905de565a9
1 changed files with 25 additions and 9 deletions
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34
bochs/cpu/paging.cc
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@ -1,5 +1,5 @@
///////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////
// $Id: paging.cc,v 1.79 2006-10-04 19:47:24 sshwarts Exp $ // $Id: paging.cc,v 1.80 2006-10-28 12:31:23 sshwarts Exp $
///////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////
// //
// Copyright (C) 2001 MandrakeSoft S.A. // Copyright (C) 2001 MandrakeSoft S.A.
@ -646,10 +646,14 @@ BX_CPU_C::translate_linear(bx_address laddr, unsigned pl, unsigned rw, unsigned
goto page_fault_not_present; // PML4 Entry NOT present goto page_fault_not_present; // PML4 Entry NOT present
} }
if (pml4 & PAGE_DIRECTORY_NX_BIT) { if (pml4 & PAGE_DIRECTORY_NX_BIT) {
if (! BX_CPU_THIS_PTR msr.nxe) if (! BX_CPU_THIS_PTR msr.nxe) {
BX_DEBUG(("PML4: NX bit set when EFER.NXE is disabled"));
goto page_fault_reserved; goto page_fault_reserved;
else if (access_type == CODE_ACCESS) }
if (access_type == CODE_ACCESS) {
BX_DEBUG(("PML4: non-executable page fault occured"));
goto page_fault_access; goto page_fault_access;
}
} }
if (!(pml4 & 0x20)) if (!(pml4 & 0x20))
{ {
@ -680,10 +684,14 @@ BX_CPU_C::translate_linear(bx_address laddr, unsigned pl, unsigned rw, unsigned
if (BX_CPU_THIS_PTR msr.lma) if (BX_CPU_THIS_PTR msr.lma)
{ {
if (pdp & PAGE_DIRECTORY_NX_BIT) { if (pdp & PAGE_DIRECTORY_NX_BIT) {
if (! BX_CPU_THIS_PTR msr.nxe) if (! BX_CPU_THIS_PTR msr.nxe) {
BX_DEBUG(("PAE PDP: NX bit set when EFER.NXE is disabled"));
goto page_fault_reserved; goto page_fault_reserved;
else if (access_type == CODE_ACCESS) }
if (access_type == CODE_ACCESS) {
BX_DEBUG(("PAE PDP: non-executable page fault occured"));
goto page_fault_access; goto page_fault_access;
}
} }
} }
#endif #endif
@ -707,10 +715,14 @@ BX_CPU_C::translate_linear(bx_address laddr, unsigned pl, unsigned rw, unsigned
#if BX_SUPPORT_X86_64 #if BX_SUPPORT_X86_64
if (pde & PAGE_DIRECTORY_NX_BIT) { if (pde & PAGE_DIRECTORY_NX_BIT) {
if (! BX_CPU_THIS_PTR msr.nxe) if (! BX_CPU_THIS_PTR msr.nxe) {
BX_DEBUG(("PAE PDE: NX bit set when EFER.NXE is disabled"));
goto page_fault_reserved; goto page_fault_reserved;
else if (access_type == CODE_ACCESS) }
if (access_type == CODE_ACCESS) {
BX_DEBUG(("PAE PDE: non-executable page fault occured"));
goto page_fault_access; goto page_fault_access;
}
} }
#endif #endif
@ -764,10 +776,14 @@ BX_CPU_C::translate_linear(bx_address laddr, unsigned pl, unsigned rw, unsigned
#if BX_SUPPORT_X86_64 #if BX_SUPPORT_X86_64
if (pte & PAGE_DIRECTORY_NX_BIT) { if (pte & PAGE_DIRECTORY_NX_BIT) {
if (! BX_CPU_THIS_PTR msr.nxe) if (! BX_CPU_THIS_PTR msr.nxe) {
BX_DEBUG(("PAE PTE: NX bit set when EFER.NXE is disabled"));
goto page_fault_reserved; goto page_fault_reserved;
else if (access_type == CODE_ACCESS) }
if (access_type == CODE_ACCESS) {
BX_DEBUG(("PAE PTE: non-executable page fault occured"));
goto page_fault_access; goto page_fault_access;
}
} }
#endif #endif