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[/] [ao486/] [trunk/] [bochs486/] [cpu/] [stack.cc] - Blame information for rev 2

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/////////////////////////////////////////////////////////////////////////
// $Id: stack.cc 11580 2013-01-19 20:45:03Z sshwarts $
/////////////////////////////////////////////////////////////////////////
//
//   Copyright (c) 2012-2013 Stanislav Shwartsman
//          Written by Stanislav Shwartsman [sshwarts at sourceforge net]
//
//  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 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 B 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////
 
#define NEED_CPU_REG_SHORTCUTS 1
#include "bochs.h"
#include "cpu.h"
#define LOG_THIS BX_CPU_THIS_PTR
 
void BX_CPP_AttrRegparmN(2) BX_CPU_C::stackPrefetch(bx_address offset, unsigned len)
{
  bx_address laddr;
  unsigned pageOffset;
 
  BX_CPU_THIS_PTR espHostPtr = 0; // initialize with NULL pointer
  BX_CPU_THIS_PTR espPageWindowSize = 0;
 
  len--;
 
#if BX_SUPPORT_X86_64
  if (long64_mode()) {
    laddr = offset;
    pageOffset = PAGE_OFFSET(offset);
 
    // canonical violations will miss the TLB below
 
    if (pageOffset + len >= 4096) // don't care for page split accesses
      return;
 
    BX_CPU_THIS_PTR espPageWindowSize = 4096;
  }
  else
#endif
  {
    laddr = get_laddr32(BX_SEG_REG_SS, offset);
    pageOffset = PAGE_OFFSET(laddr);
    if (pageOffset + len >= 4096) // don't care for page split accesses
      return;
 
    Bit32u limit = BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.limit_scaled;
    Bit32u pageStart = (Bit32u) offset - pageOffset;
 
    if (! BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.valid) {
      BX_ERROR(("stackPrefetch: SS not valid"));
      exception(BX_SS_EXCEPTION, 0);
    }
 
    BX_ASSERT(BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.p);
    BX_ASSERT(IS_DATA_SEGMENT_WRITEABLE(BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.type));
 
    // check that the begining of the page is within stack segment limits
    // problem can happen with EXPAND DOWN segments
    if (IS_DATA_SEGMENT_EXPAND_DOWN(BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.type)) {
      Bit32u upper_limit;
      if (BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.d_b)
        upper_limit = 0xffffffff;
      else
        upper_limit = 0x0000ffff;
      if (offset <= limit || offset > upper_limit || (upper_limit - offset) < len) {
        BX_ERROR(("stackPrefetch(%d): access [0x%08x] > SS.limit [0x%08x] ED", len+1, (Bit32u) offset, limit));
        exception(BX_SS_EXCEPTION, 0);
      }
 
      // check that the begining of the page is within stack segment limits
      // handle correctly the wrap corner case for EXPAND DOWN 
      Bit32u pageEnd = pageStart + 0xfff;
      if (pageStart > limit && pageStart < pageEnd) {
        BX_CPU_THIS_PTR espPageWindowSize = 4096;
        if ((upper_limit - offset) < (4096 - pageOffset))
          BX_CPU_THIS_PTR espPageWindowSize = (Bit32u)(upper_limit - offset + 1);
      }
    }
    else {
      if (offset > (limit - len) || len > limit) {
        BX_ERROR(("stackPrefetch(%d): access [0x%08x] > SS.limit [0x%08x]", len+1, (Bit32u) offset, limit));
        exception(BX_SS_EXCEPTION, 0);
      }
 
      if (pageStart <= limit) {
        BX_CPU_THIS_PTR espPageWindowSize = 4096;
        if ((limit - offset) < (4096 - pageOffset))
          BX_CPU_THIS_PTR espPageWindowSize = (Bit32u)(limit - offset + 1);
      }
    }
  }
 
  unsigned tlbIndex = BX_TLB_INDEX_OF(laddr, 0);
  Bit64u lpf = LPFOf(laddr);
  bx_TLB_entry *tlbEntry = &BX_CPU_THIS_PTR TLB.entry[tlbIndex];
  if (tlbEntry->lpf == lpf) {
    // See if the TLB entry privilege level allows us write access from this CPL
    // Assuming that we always can read if write access is OK
    if (tlbEntry->accessBits & (0x04 << USER_PL)) {
      BX_CPU_THIS_PTR espPageBias = (bx_address) pageOffset - offset;
      BX_CPU_THIS_PTR pAddrStackPage = tlbEntry->ppf;
      BX_CPU_THIS_PTR espHostPtr = (Bit8u*) tlbEntry->hostPageAddr;
    }
  }
 
  if (! BX_CPU_THIS_PTR espHostPtr || BX_CPU_THIS_PTR espPageWindowSize < 7)
    BX_CPU_THIS_PTR espPageWindowSize = 0;
  else
    BX_CPU_THIS_PTR espPageWindowSize -= 7;
}
 
void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_byte(bx_address offset, Bit8u data)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 1);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit8u *hostPageAddr = (Bit8u*)(BX_CPU_THIS_PTR espHostPtr + espBiased);
    bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 1, CPL, BX_WRITE, (Bit8u*) &data);
    pageWriteStampTable.decWriteStamp(pAddr, 1);
    *hostPageAddr = data;
  }
  else {
    write_virtual_byte(BX_SEG_REG_SS, offset, data);
  }
}
 
void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_word(bx_address offset, Bit16u data)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 2);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit16u *hostPageAddr = (Bit16u*)(BX_CPU_THIS_PTR espHostPtr + espBiased);
    bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;
#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK
    if (BX_CPU_THIS_PTR alignment_check() && (pAddr & 1) != 0) {
      BX_ERROR(("stack_write_word(): #AC misaligned access"));
      exception(BX_AC_EXCEPTION, 0);
    }
#endif
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 2, CPL, BX_WRITE, (Bit8u*) &data);
    pageWriteStampTable.decWriteStamp(pAddr, 2);
    WriteHostWordToLittleEndian(hostPageAddr, data);
  }
  else {
    write_virtual_word(BX_SEG_REG_SS, offset, data);
  }
}
 
void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_dword(bx_address offset, Bit32u data)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 4);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit32u *hostPageAddr = (Bit32u*)(BX_CPU_THIS_PTR espHostPtr + espBiased);
    bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;
#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK
    if (BX_CPU_THIS_PTR alignment_check() && (pAddr & 3) != 0) {
      BX_ERROR(("stack_write_dword(): #AC misaligned access"));
      exception(BX_AC_EXCEPTION, 0);
    }
#endif
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 4, CPL, BX_WRITE, (Bit8u*) &data);
    pageWriteStampTable.decWriteStamp(pAddr, 4);
    WriteHostDWordToLittleEndian(hostPageAddr, data);
  }
  else {
    write_virtual_dword(BX_SEG_REG_SS, offset, data);
  }
}
 
void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_qword(bx_address offset, Bit64u data)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 8);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit64u *hostPageAddr = (Bit64u*)(BX_CPU_THIS_PTR espHostPtr + espBiased);
    bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;
#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK
    if (BX_CPU_THIS_PTR alignment_check() && (pAddr & 7) != 0) {
      BX_ERROR(("stack_write_qword(): #AC misaligned access"));
      exception(BX_AC_EXCEPTION, 0);
    }
#endif
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 8, CPL, BX_WRITE, (Bit8u*) &data);
    pageWriteStampTable.decWriteStamp(pAddr, 8);
    WriteHostQWordToLittleEndian(hostPageAddr, data);
  }
  else {
    write_virtual_qword(BX_SEG_REG_SS, offset, data);
  }
}
 
Bit8u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_byte(bx_address offset)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 1);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit8u *hostPageAddr = (Bit8u*)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;
    data = *hostPageAddr;
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),
        (BX_CPU_THIS_PTR pAddrStackPage + espBiased), 1, CPL, BX_READ, (Bit8u*) &data);
    return data;
  }
  else {
    return read_virtual_byte(BX_SEG_REG_SS, offset);
  }
}
 
Bit16u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_word(bx_address offset)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 2);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit16u *hostPageAddr = (Bit16u*)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;
#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK
    if (BX_CPU_THIS_PTR alignment_check()) {
      bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;
      if (pAddr & 1) {
        BX_ERROR(("stack_read_word(): #AC misaligned access"));
        exception(BX_AC_EXCEPTION, 0);
      }
    }
#endif
    ReadHostWordFromLittleEndian(hostPageAddr, data);
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),
        (BX_CPU_THIS_PTR pAddrStackPage + espBiased), 2, CPL, BX_READ, (Bit8u*) &data);
    return data;
  }
  else {
    return read_virtual_word(BX_SEG_REG_SS, offset);
  }
}
 
Bit32u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_dword(bx_address offset)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 4);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit32u *hostPageAddr = (Bit32u*)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;
#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK
    if (BX_CPU_THIS_PTR alignment_check()) {
      bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;
      if (pAddr & 3) {
        BX_ERROR(("stack_read_dword(): #AC misaligned access"));
        exception(BX_AC_EXCEPTION, 0);
      }
    }
#endif
    ReadHostDWordFromLittleEndian(hostPageAddr, data);
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),
        (BX_CPU_THIS_PTR pAddrStackPage + espBiased), 4, CPL, BX_READ, (Bit8u*) &data);
    return data;
  }
  else {
    return read_virtual_dword(BX_SEG_REG_SS, offset);
  }
}
 
Bit64u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_qword(bx_address offset)
{
  bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;
 
  if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {
    stackPrefetch(offset, 8);
    espBiased = offset + BX_CPU_THIS_PTR espPageBias;
  }
 
  if (BX_CPU_THIS_PTR espHostPtr) {
    Bit64u *hostPageAddr = (Bit64u*)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;
#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK
    if (BX_CPU_THIS_PTR alignment_check()) {
      bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;
      if (pAddr & 7) {
        BX_ERROR(("stack_read_qword(): #AC misaligned access"));
        exception(BX_AC_EXCEPTION, 0);
      }
    }
#endif
    ReadHostQWordFromLittleEndian(hostPageAddr, data);
    BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),
        (BX_CPU_THIS_PTR pAddrStackPage + espBiased), 8, CPL, BX_READ, (Bit8u*) &data);
    return data;
  }
  else {
    return read_virtual_qword(BX_SEG_REG_SS, offset);
  }
}

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[/] [ao486/] [trunk/] [bochs486/] [cpu/] [stack.cc] - Blame information for rev 2

Line No.	Rev	Author	Line
1	2	alfik	`/////////////////////////////////////////////////////////////////////////`
2			`// $Id: stack.cc 11580 2013-01-19 20:45:03Z sshwarts $`
3			`/////////////////////////////////////////////////////////////////////////`
4			`//`
5			`// Copyright (c) 2012-2013 Stanislav Shwartsman`
6			`// Written by Stanislav Shwartsman [sshwarts at sourceforge net]`
7			`//`
8			`// This library is free software; you can redistribute it and/or`
9			`// modify it under the terms of the GNU Lesser General Public`
10			`// License as published by the Free Software Foundation; either`
11			`// version 2 of the License, or (at your option) any later version.`
12			`//`
13			`// This library is distributed in the hope that it will be useful,`
14			`// but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
16			`// Lesser General Public License for more details.`
17			`//`
18			`// You should have received a copy of the GNU Lesser General Public`
19			`// License along with this library; if not, write to the Free Software`
20			`// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA`
21			`//`
22			`/////////////////////////////////////////////////////////////////////////`
23
24			`#define NEED_CPU_REG_SHORTCUTS 1`
25			`#include "bochs.h"`
26			`#include "cpu.h"`
27			`#define LOG_THIS BX_CPU_THIS_PTR`
28
29			`void BX_CPP_AttrRegparmN(2) BX_CPU_C::stackPrefetch(bx_address offset, unsigned len)`
30			`{`
31			`bx_address laddr;`
32			`unsigned pageOffset;`
33
34			`BX_CPU_THIS_PTR espHostPtr = 0; // initialize with NULL pointer`
35			`BX_CPU_THIS_PTR espPageWindowSize = 0;`
36
37			`len--;`
38
39			`#if BX_SUPPORT_X86_64`
40			`if (long64_mode()) {`
41			`laddr = offset;`
42			`pageOffset = PAGE_OFFSET(offset);`
43
44			`// canonical violations will miss the TLB below`
45
46			`if (pageOffset + len >= 4096) // don't care for page split accesses`
47			`return;`
48
49			`BX_CPU_THIS_PTR espPageWindowSize = 4096;`
50			`}`
51			`else`
52			`#endif`
53			`{`
54			`laddr = get_laddr32(BX_SEG_REG_SS, offset);`
55			`pageOffset = PAGE_OFFSET(laddr);`
56			`if (pageOffset + len >= 4096) // don't care for page split accesses`
57			`return;`
58
59			`Bit32u limit = BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.limit_scaled;`
60			`Bit32u pageStart = (Bit32u) offset - pageOffset;`
61
62			`if (! BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.valid) {`
63			`BX_ERROR(("stackPrefetch: SS not valid"));`
64			`exception(BX_SS_EXCEPTION, 0);`
65			`}`
66
67			`BX_ASSERT(BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.p);`
68			`BX_ASSERT(IS_DATA_SEGMENT_WRITEABLE(BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.type));`
69
70			`// check that the begining of the page is within stack segment limits`
71			`// problem can happen with EXPAND DOWN segments`
72			`if (IS_DATA_SEGMENT_EXPAND_DOWN(BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.type)) {`
73			`Bit32u upper_limit;`
74			`if (BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.d_b)`
75			`upper_limit = 0xffffffff;`
76			`else`
77			`upper_limit = 0x0000ffff;`
78			`if (offset <= limit \|\| offset > upper_limit \|\| (upper_limit - offset) < len) {`
79			`BX_ERROR(("stackPrefetch(%d): access [0x%08x] > SS.limit [0x%08x] ED", len+1, (Bit32u) offset, limit));`
80			`exception(BX_SS_EXCEPTION, 0);`
81			`}`
82
83			`// check that the begining of the page is within stack segment limits`
84			`// handle correctly the wrap corner case for EXPAND DOWN`
85			`Bit32u pageEnd = pageStart + 0xfff;`
86			`if (pageStart > limit && pageStart < pageEnd) {`
87			`BX_CPU_THIS_PTR espPageWindowSize = 4096;`
88			`if ((upper_limit - offset) < (4096 - pageOffset))`
89			`BX_CPU_THIS_PTR espPageWindowSize = (Bit32u)(upper_limit - offset + 1);`
90			`}`
91			`}`
92			`else {`
93			`if (offset > (limit - len) \|\| len > limit) {`
94			`BX_ERROR(("stackPrefetch(%d): access [0x%08x] > SS.limit [0x%08x]", len+1, (Bit32u) offset, limit));`
95			`exception(BX_SS_EXCEPTION, 0);`
96			`}`
97
98			`if (pageStart <= limit) {`
99			`BX_CPU_THIS_PTR espPageWindowSize = 4096;`
100			`if ((limit - offset) < (4096 - pageOffset))`
101			`BX_CPU_THIS_PTR espPageWindowSize = (Bit32u)(limit - offset + 1);`
102			`}`
103			`}`
104			`}`
105
106			`unsigned tlbIndex = BX_TLB_INDEX_OF(laddr, 0);`
107			`Bit64u lpf = LPFOf(laddr);`
108			`bx_TLB_entry *tlbEntry = &BX_CPU_THIS_PTR TLB.entry[tlbIndex];`
109			`if (tlbEntry->lpf == lpf) {`
110			`// See if the TLB entry privilege level allows us write access from this CPL`
111			`// Assuming that we always can read if write access is OK`
112			`if (tlbEntry->accessBits & (0x04 << USER_PL)) {`
113			`BX_CPU_THIS_PTR espPageBias = (bx_address) pageOffset - offset;`
114			`BX_CPU_THIS_PTR pAddrStackPage = tlbEntry->ppf;`
115			`BX_CPU_THIS_PTR espHostPtr = (Bit8u*) tlbEntry->hostPageAddr;`
116			`}`
117			`}`
118
119			`if (! BX_CPU_THIS_PTR espHostPtr \|\| BX_CPU_THIS_PTR espPageWindowSize < 7)`
120			`BX_CPU_THIS_PTR espPageWindowSize = 0;`
121			`else`
122			`BX_CPU_THIS_PTR espPageWindowSize -= 7;`
123			`}`
124
125			`void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_byte(bx_address offset, Bit8u data)`
126			`{`
127			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
128
129			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
130			`stackPrefetch(offset, 1);`
131			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
132			`}`
133
134			`if (BX_CPU_THIS_PTR espHostPtr) {`
135			`Bit8u hostPageAddr = (Bit8u)(BX_CPU_THIS_PTR espHostPtr + espBiased);`
136			`bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;`
137			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 1, CPL, BX_WRITE, (Bit8u*) &data);`
138			`pageWriteStampTable.decWriteStamp(pAddr, 1);`
139			`*hostPageAddr = data;`
140			`}`
141			`else {`
142			`write_virtual_byte(BX_SEG_REG_SS, offset, data);`
143			`}`
144			`}`
145
146			`void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_word(bx_address offset, Bit16u data)`
147			`{`
148			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
149
150			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
151			`stackPrefetch(offset, 2);`
152			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
153			`}`
154
155			`if (BX_CPU_THIS_PTR espHostPtr) {`
156			`Bit16u hostPageAddr = (Bit16u)(BX_CPU_THIS_PTR espHostPtr + espBiased);`
157			`bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;`
158			`#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK`
159			`if (BX_CPU_THIS_PTR alignment_check() && (pAddr & 1) != 0) {`
160			`BX_ERROR(("stack_write_word(): #AC misaligned access"));`
161			`exception(BX_AC_EXCEPTION, 0);`
162			`}`
163			`#endif`
164			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 2, CPL, BX_WRITE, (Bit8u*) &data);`
165			`pageWriteStampTable.decWriteStamp(pAddr, 2);`
166			`WriteHostWordToLittleEndian(hostPageAddr, data);`
167			`}`
168			`else {`
169			`write_virtual_word(BX_SEG_REG_SS, offset, data);`
170			`}`
171			`}`
172
173			`void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_dword(bx_address offset, Bit32u data)`
174			`{`
175			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
176
177			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
178			`stackPrefetch(offset, 4);`
179			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
180			`}`
181
182			`if (BX_CPU_THIS_PTR espHostPtr) {`
183			`Bit32u hostPageAddr = (Bit32u)(BX_CPU_THIS_PTR espHostPtr + espBiased);`
184			`bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;`
185			`#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK`
186			`if (BX_CPU_THIS_PTR alignment_check() && (pAddr & 3) != 0) {`
187			`BX_ERROR(("stack_write_dword(): #AC misaligned access"));`
188			`exception(BX_AC_EXCEPTION, 0);`
189			`}`
190			`#endif`
191			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 4, CPL, BX_WRITE, (Bit8u*) &data);`
192			`pageWriteStampTable.decWriteStamp(pAddr, 4);`
193			`WriteHostDWordToLittleEndian(hostPageAddr, data);`
194			`}`
195			`else {`
196			`write_virtual_dword(BX_SEG_REG_SS, offset, data);`
197			`}`
198			`}`
199
200			`void BX_CPP_AttrRegparmN(2) BX_CPU_C::stack_write_qword(bx_address offset, Bit64u data)`
201			`{`
202			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
203
204			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
205			`stackPrefetch(offset, 8);`
206			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
207			`}`
208
209			`if (BX_CPU_THIS_PTR espHostPtr) {`
210			`Bit64u hostPageAddr = (Bit64u)(BX_CPU_THIS_PTR espHostPtr + espBiased);`
211			`bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;`
212			`#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK`
213			`if (BX_CPU_THIS_PTR alignment_check() && (pAddr & 7) != 0) {`
214			`BX_ERROR(("stack_write_qword(): #AC misaligned access"));`
215			`exception(BX_AC_EXCEPTION, 0);`
216			`}`
217			`#endif`
218			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset), pAddr, 8, CPL, BX_WRITE, (Bit8u*) &data);`
219			`pageWriteStampTable.decWriteStamp(pAddr, 8);`
220			`WriteHostQWordToLittleEndian(hostPageAddr, data);`
221			`}`
222			`else {`
223			`write_virtual_qword(BX_SEG_REG_SS, offset, data);`
224			`}`
225			`}`
226
227			`Bit8u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_byte(bx_address offset)`
228			`{`
229			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
230
231			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
232			`stackPrefetch(offset, 1);`
233			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
234			`}`
235
236			`if (BX_CPU_THIS_PTR espHostPtr) {`
237			`Bit8u hostPageAddr = (Bit8u)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;`
238			`data = *hostPageAddr;`
239			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),`
240			`(BX_CPU_THIS_PTR pAddrStackPage + espBiased), 1, CPL, BX_READ, (Bit8u*) &data);`
241			`return data;`
242			`}`
243			`else {`
244			`return read_virtual_byte(BX_SEG_REG_SS, offset);`
245			`}`
246			`}`
247
248			`Bit16u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_word(bx_address offset)`
249			`{`
250			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
251
252			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
253			`stackPrefetch(offset, 2);`
254			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
255			`}`
256
257			`if (BX_CPU_THIS_PTR espHostPtr) {`
258			`Bit16u hostPageAddr = (Bit16u)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;`
259			`#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK`
260			`if (BX_CPU_THIS_PTR alignment_check()) {`
261			`bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;`
262			`if (pAddr & 1) {`
263			`BX_ERROR(("stack_read_word(): #AC misaligned access"));`
264			`exception(BX_AC_EXCEPTION, 0);`
265			`}`
266			`}`
267			`#endif`
268			`ReadHostWordFromLittleEndian(hostPageAddr, data);`
269			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),`
270			`(BX_CPU_THIS_PTR pAddrStackPage + espBiased), 2, CPL, BX_READ, (Bit8u*) &data);`
271			`return data;`
272			`}`
273			`else {`
274			`return read_virtual_word(BX_SEG_REG_SS, offset);`
275			`}`
276			`}`
277
278			`Bit32u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_dword(bx_address offset)`
279			`{`
280			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
281
282			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
283			`stackPrefetch(offset, 4);`
284			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
285			`}`
286
287			`if (BX_CPU_THIS_PTR espHostPtr) {`
288			`Bit32u hostPageAddr = (Bit32u)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;`
289			`#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK`
290			`if (BX_CPU_THIS_PTR alignment_check()) {`
291			`bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;`
292			`if (pAddr & 3) {`
293			`BX_ERROR(("stack_read_dword(): #AC misaligned access"));`
294			`exception(BX_AC_EXCEPTION, 0);`
295			`}`
296			`}`
297			`#endif`
298			`ReadHostDWordFromLittleEndian(hostPageAddr, data);`
299			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),`
300			`(BX_CPU_THIS_PTR pAddrStackPage + espBiased), 4, CPL, BX_READ, (Bit8u*) &data);`
301			`return data;`
302			`}`
303			`else {`
304			`return read_virtual_dword(BX_SEG_REG_SS, offset);`
305			`}`
306			`}`
307
308			`Bit64u BX_CPP_AttrRegparmN(1) BX_CPU_C::stack_read_qword(bx_address offset)`
309			`{`
310			`bx_address espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
311
312			`if (espBiased >= BX_CPU_THIS_PTR espPageWindowSize) {`
313			`stackPrefetch(offset, 8);`
314			`espBiased = offset + BX_CPU_THIS_PTR espPageBias;`
315			`}`
316
317			`if (BX_CPU_THIS_PTR espHostPtr) {`
318			`Bit64u hostPageAddr = (Bit64u)(BX_CPU_THIS_PTR espHostPtr + espBiased), data;`
319			`#if BX_CPU_LEVEL >= 4 && BX_SUPPORT_ALIGNMENT_CHECK`
320			`if (BX_CPU_THIS_PTR alignment_check()) {`
321			`bx_phy_address pAddr = BX_CPU_THIS_PTR pAddrStackPage + espBiased;`
322			`if (pAddr & 7) {`
323			`BX_ERROR(("stack_read_qword(): #AC misaligned access"));`
324			`exception(BX_AC_EXCEPTION, 0);`
325			`}`
326			`}`
327			`#endif`
328			`ReadHostQWordFromLittleEndian(hostPageAddr, data);`
329			`BX_NOTIFY_LIN_MEMORY_ACCESS(get_laddr(BX_SEG_REG_SS, offset),`
330			`(BX_CPU_THIS_PTR pAddrStackPage + espBiased), 8, CPL, BX_READ, (Bit8u*) &data);`
331			`return data;`
332			`}`
333			`else {`
334			`return read_virtual_qword(BX_SEG_REG_SS, offset);`
335			`}`
336			`}`