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This commit is contained in:
Stanislav Shwartsman 2008-05-26 18:02:07 +00:00
parent 77fbc2c187
commit aaf6b3a648
2 changed files with 18 additions and 3 deletions
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17
bochs/cpu/descriptor.h
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: descriptor.h,v 1.23 2008-05-13 05:12:11 sshwarts Exp $
// $Id: descriptor.h,v 1.24 2008-05-26 18:02:07 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2007 Stanislav Shwartsman
@ -23,6 +23,21 @@
#ifndef BX_DESCRIPTOR_H
#define BX_DESCRIPTOR_H
//
// |---------------------------------------------|
// | Segment Descriptor |
// |---------------------------------------------|
// |33222222|2|2|2|2| 11 11 |1|11|1|11 | |
// |10987654|3|2|1|0| 98 76 |5|43|2|1098|76543210|
// |--------|-|-|-|-|-------|-|--|-|----|--------|
// |Base |G|D|L|A|Limit |P|D |S|Type|Base |
// |[31-24] | |/| |V|[19-16]| |P | | |[23-16] |
// | | |B| |L| | |L | | | |
// |------------------------|--------------------|
// | Base [15-0] | Limit [15-0] |
// |------------------------|--------------------|
//
typedef struct { /* bx_selector_t */
Bit16u value; /* the 16bit value of the selector */
#if BX_CPU_LEVEL >= 2

4
bochs/cpu/io_pro.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: io_pro.cc,v 1.32 2008-05-19 20:01:23 sshwarts Exp $
// $Id: io_pro.cc,v 1.33 2008-05-26 18:02:07 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
@ -133,7 +133,7 @@ bx_bool BX_CPU_C::allow_io(Bit16u addr, unsigned len)
return(0);
}
*/
if ((Bit32s) (addr/8) >= (Bit32s) (BX_CPU_THIS_PTR tr.cache.u.system.limit_scaled - io_base)) {
if ((io_base + addr/8) >= BX_CPU_THIS_PTR tr.cache.u.system.limit_scaled) {
BX_ERROR(("allow_io(): IO addr %x (len %d) outside TSS IO permission map (base=%x, limit=%x) #GP(0)",
addr, len, io_base, BX_CPU_THIS_PTR tr.cache.u.system.limit_scaled));
return(0);