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Bochs/bochs/cpu/vm8086.cc

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- add RCS Id to header of every file. This makes it easier to know what's going on when someone sends in a modified file.
2001-10-03 17:10:38 +04:00
/////////////////////////////////////////////////////////////////////////
Updated accessing of modrm/sib addressing information to use accessors. This lets me work on compressing the size of fetch-decode structure (now called bxInstruction_c). I've reduced it down to about 76 bytes. We should be able to do much better soon. I needed the abstraction of the accessors, so I have a lot of freedom to re-arrange things without making massive future changes. Lost a few percent of performance in these mods, but my main focus was to get the abstraction.
2002-09-18 02:50:53 +04:00
// $Id: vm8086.cc,v 1.14 2002-09-17 22:50:53 kevinlawton Exp $
- add RCS Id to header of every file. This makes it easier to know what's going on when someone sends in a modified file.
2001-10-03 17:10:38 +04:00
/////////////////////////////////////////////////////////////////////////
//
- update copyright dates to 2001 for all mandrake headers - for bochs files with other header, replaced with current mandrake header
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// Copyright (C) 2001 MandrakeSoft S.A.
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- parts of the SMP merge apparantly broke the debugger and this revision tries to fix it. The shortcuts to register names such as AX and DL are #defines in cpu/cpu.h, and they are defined in terms of BX_CPU_THIS_PTR. When BX_USE_CPU_SMF=1, this works fine. (This is what bochs used for a long time, and nobody used the SMF=0 mode at all.) To make SMP bochs work, I had to get SMF=0 mode working for the CPU so that there could be an array of cpus. When SMF=0 for the CPU, BX_CPU_THIS_PTR is defined to be "this->" which only works within methods of BX_CPU_C. Code outside of BX_CPU_C must reference BX_CPU(num) instead. - to try to enforce the correct use of AL/AX/DL/etc. shortcuts, they are now only #defined when "NEED_CPU_REG_SHORTCUTS" is #defined. This is only done in the cpu/*.cc code.
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#define NEED_CPU_REG_SHORTCUTS 1
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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#include "bochs.h"
merge in BRANCH-io-cleanup. To see the commit logs for this use either cvsweb or cvs update -r BRANCH-io-cleanup and then 'cvs log' the various files. In general this provides a generic interface for logging. logfunctions:: is a class that is inherited by some classes, and also . allocated as a standalone global called 'genlog'. All logging uses . one of the ::info(), ::error(), ::ldebug(), ::panic() methods of this . class through 'BX_INFO(), BX_ERROR(), BX_DEBUG(), BX_PANIC()' macros . respectively. . . An example usage: . BX_INFO(("Hello, World!\n")); iofunctions:: is a class that is allocated once by default, and assigned as the iofunction of each logfunctions instance. It is this class that maintains the file descriptor and other output related code, at this point using vfprintf(). At some future point, someone may choose to write a gui 'console' for bochs to which messages would be redirected simply by assigning a different iofunction class to the various logfunctions objects. More cleanup is coming, but this works for now. If you want to see alot of debugging output, in main.cc, change onoff[LOGLEV_DEBUG]=0 to =1. Comments, bugs, flames, to me: todd@fries.net
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#define LOG_THIS BX_CPU_THIS_PTR
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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// Notes:
//
// The high bits of the 32bit eip image are ignored by
// the IRET to VM. The high bits of the 32bit esp image
// are loaded into ESP. A subsequent push uses
// only the low 16bits since it's in VM. In neither case
// did a protection fault occur during actual tests. This
// is contrary to the Intel docs which claim a #GP for
// eIP out of code limits.
//
// IRET to VM does affect IOPL, IF, VM, and RF
#if BX_SUPPORT_V8086_MODE
#if BX_CPU_LEVEL >= 3
void
BX_CPU_C::stack_return_to_v86(Bit32u new_eip, Bit32u raw_cs_selector,
Bit32u flags32)
{
Bit32u temp_ESP, new_esp, esp_laddr;
Bit16u raw_es_selector, raw_ds_selector, raw_fs_selector,
raw_gs_selector, raw_ss_selector;
// Must be 32bit effective opsize, VM is in upper 16bits of eFLAGS
// CPL = 0 to get here
// ----------------
// | | OLD GS | eSP+32
// | | OLD FS | eSP+28
// | | OLD DS | eSP+24
// | | OLD ES | eSP+20
// | | OLD SS | eSP+16
// | OLD ESP | eSP+12
// | OLD EFLAGS | eSP+8
// | | OLD CS | eSP+4
// | OLD EIP | eSP+0
// ----------------
if (BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.d_b)
temp_ESP = ESP;
else
temp_ESP = SP;
// top 36 bytes of stack must be within stack limits, else #GP(0)
if ( !can_pop(36) ) {
strip '\n' from BX_{INFO,DEBUG,ERROR,PANIC} don't need it, moved the output of it into the general io functions. saves space, as well as removes the confusing output if a '\n' is left off
2001-05-30 22:56:02 +04:00
BX_PANIC(("iret: VM: top 36 bytes not within limits"));
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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exception(BX_SS_EXCEPTION, 0, 0);
return;
}
if ( new_eip & 0xffff0000 ) {
strip '\n' from BX_{INFO,DEBUG,ERROR,PANIC} don't need it, moved the output of it into the general io functions. saves space, as well as removes the confusing output if a '\n' is left off
2001-05-30 22:56:02 +04:00
BX_INFO(("IRET to V86-mode: ignoring upper 16-bits"));
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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new_eip = new_eip & 0xffff;
}
esp_laddr = BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.base +
temp_ESP;
// load SS:ESP from stack
access_linear(esp_laddr + 12, 4, 0, BX_READ, &new_esp);
access_linear(esp_laddr + 16, 2, 0, BX_READ, &raw_ss_selector);
// load ES,DS,FS,GS from stack
access_linear(esp_laddr + 20, 2, 0, BX_READ, &raw_es_selector);
access_linear(esp_laddr + 24, 2, 0, BX_READ, &raw_ds_selector);
access_linear(esp_laddr + 28, 2, 0, BX_READ, &raw_fs_selector);
access_linear(esp_laddr + 32, 2, 0, BX_READ, &raw_gs_selector);
write_eflags(flags32, /*change IOPL*/ 1, /*change IF*/ 1,
/*change VM*/ 1, /*change RF*/ 1);
// load CS:EIP from stack; already read and passed as args
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.value = raw_cs_selector;
EIP = new_eip;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].selector.value = raw_es_selector;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].selector.value = raw_ds_selector;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].selector.value = raw_fs_selector;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].selector.value = raw_gs_selector;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].selector.value = raw_ss_selector;
(cpu64) Merged vm8086.cc.
2002-09-14 02:02:11 +04:00
#if BX_SUPPORT_X86_64
RSP = new_esp;
#else
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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ESP = new_esp; // Full 32bits are loaded.
(cpu64) Merged vm8086.cc.
2002-09-14 02:02:11 +04:00
#endif
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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init_v8086_mode();
}
void
Updated accessing of modrm/sib addressing information to use accessors. This lets me work on compressing the size of fetch-decode structure (now called bxInstruction_c). I've reduced it down to about 76 bytes. We should be able to do much better soon. I needed the abstraction of the accessors, so I have a lot of freedom to re-arrange things without making massive future changes. Lost a few percent of performance in these mods, but my main focus was to get the abstraction.
2002-09-18 02:50:53 +04:00
BX_CPU_C::stack_return_from_v86(bxInstruction_c *i)
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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{
- this revision changes the way eflags are accessed throughout the cpu and cpu64 directories. Instead of using the macros introduced in cpu.h rev 1.37 such as GetEFlagsDFLogical and SetEFlagsDF and ClearEFlagsDF, I made inline methods on the BX_CPU_C object that access the eflags fields. The problem with the macros is that they cannot be used outside the BX_CPU_C object. The macros have now been removed, and all references to eflags now use these new accessors. - I debated whether to put the accessors as members of the BX_CPU_C object or members of the bx_flags_reg_t struct. I chose to make them members of BX_CPU_C for two reasons: 1. the lazy flags are implemented as members of BX_CPU_C, and 2. the eflags are referenced in many many places and it is more compact without having to put eflags in front of each. (The real problem with compactness is having to write BX_CPU_THIS_PTR in front of everything, but that's another story.) - Kevin pointed out a major bug in my set accessor code. What a difference a little tilde can make! That is fixed now. - modified: load32bitOShack.cc debug/dbg_main.cc and in both cpu and cpu64 directories: cpu.cc cpu.h ctrl_xfer_pro.cc debugstuff.cc exception.cc flag_ctrl.cc flag_ctrl_pro.cc init.cc io.cc io_pro.cc proc_ctrl.cc soft_int.cc string.cc vm8086.cc
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if (BX_CPU_THIS_PTR get_IOPL() != 3) {
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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// trap to virtual 8086 monitor
- included instinc's patch.stack-return-from-v86
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BX_DEBUG(("IRET in vm86 with IOPL != 3"));
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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exception(BX_GP_EXCEPTION, 0, 0);
- included instinc's patch.stack-return-from-v86
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return;
(cpu64) Merged vm8086.cc.
2002-09-14 02:02:11 +04:00
}
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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if (i->os_32) {
- this revision changes the way eflags are accessed throughout the cpu and cpu64 directories. Instead of using the macros introduced in cpu.h rev 1.37 such as GetEFlagsDFLogical and SetEFlagsDF and ClearEFlagsDF, I made inline methods on the BX_CPU_C object that access the eflags fields. The problem with the macros is that they cannot be used outside the BX_CPU_C object. The macros have now been removed, and all references to eflags now use these new accessors. - I debated whether to put the accessors as members of the BX_CPU_C object or members of the bx_flags_reg_t struct. I chose to make them members of BX_CPU_C for two reasons: 1. the lazy flags are implemented as members of BX_CPU_C, and 2. the eflags are referenced in many many places and it is more compact without having to put eflags in front of each. (The real problem with compactness is having to write BX_CPU_THIS_PTR in front of everything, but that's another story.) - Kevin pointed out a major bug in my set accessor code. What a difference a little tilde can make! That is fixed now. - modified: load32bitOShack.cc debug/dbg_main.cc and in both cpu and cpu64 directories: cpu.cc cpu.h ctrl_xfer_pro.cc debugstuff.cc exception.cc flag_ctrl.cc flag_ctrl_pro.cc init.cc io.cc io_pro.cc proc_ctrl.cc soft_int.cc string.cc vm8086.cc
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Bit32u eip, ecs_raw, eflags_tmp;
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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- included instinc's patch.stack-return-from-v86
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if( !can_pop(12) )
{
exception(BX_SS_EXCEPTION, 0, 0);
return;
}
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
2001-04-10 05:04:59 +04:00
pop_32(&eip);
pop_32(&ecs_raw);
- this revision changes the way eflags are accessed throughout the cpu and cpu64 directories. Instead of using the macros introduced in cpu.h rev 1.37 such as GetEFlagsDFLogical and SetEFlagsDF and ClearEFlagsDF, I made inline methods on the BX_CPU_C object that access the eflags fields. The problem with the macros is that they cannot be used outside the BX_CPU_C object. The macros have now been removed, and all references to eflags now use these new accessors. - I debated whether to put the accessors as members of the BX_CPU_C object or members of the bx_flags_reg_t struct. I chose to make them members of BX_CPU_C for two reasons: 1. the lazy flags are implemented as members of BX_CPU_C, and 2. the eflags are referenced in many many places and it is more compact without having to put eflags in front of each. (The real problem with compactness is having to write BX_CPU_THIS_PTR in front of everything, but that's another story.) - Kevin pointed out a major bug in my set accessor code. What a difference a little tilde can make! That is fixed now. - modified: load32bitOShack.cc debug/dbg_main.cc and in both cpu and cpu64 directories: cpu.cc cpu.h ctrl_xfer_pro.cc debugstuff.cc exception.cc flag_ctrl.cc flag_ctrl_pro.cc init.cc io.cc io_pro.cc proc_ctrl.cc soft_int.cc string.cc vm8086.cc
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pop_32(&eflags_tmp);
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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load_seg_reg(&BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS], (Bit16u) ecs_raw);
I merged the cpu/cpu.h and cpu64/cpu.h files as well as the other header files. There no longer are any *.h files in cpu64/. Had to make some changes to the *.cc files for dealing with accesses to eip.
2002-09-13 04:15:23 +04:00
EIP = eip;
- this revision changes the way eflags are accessed throughout the cpu and cpu64 directories. Instead of using the macros introduced in cpu.h rev 1.37 such as GetEFlagsDFLogical and SetEFlagsDF and ClearEFlagsDF, I made inline methods on the BX_CPU_C object that access the eflags fields. The problem with the macros is that they cannot be used outside the BX_CPU_C object. The macros have now been removed, and all references to eflags now use these new accessors. - I debated whether to put the accessors as members of the BX_CPU_C object or members of the bx_flags_reg_t struct. I chose to make them members of BX_CPU_C for two reasons: 1. the lazy flags are implemented as members of BX_CPU_C, and 2. the eflags are referenced in many many places and it is more compact without having to put eflags in front of each. (The real problem with compactness is having to write BX_CPU_THIS_PTR in front of everything, but that's another story.) - Kevin pointed out a major bug in my set accessor code. What a difference a little tilde can make! That is fixed now. - modified: load32bitOShack.cc debug/dbg_main.cc and in both cpu and cpu64 directories: cpu.cc cpu.h ctrl_xfer_pro.cc debugstuff.cc exception.cc flag_ctrl.cc flag_ctrl_pro.cc init.cc io.cc io_pro.cc proc_ctrl.cc soft_int.cc string.cc vm8086.cc
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write_eflags(eflags_tmp, /*IOPL*/ 0, /*IF*/ 1, /*VM*/ 0, /*RF*/ 1);
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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}
else {
Bit16u ip, cs_raw, flags;
- included instinc's patch.stack-return-from-v86
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if( !can_pop(6) )
{
exception(BX_SS_EXCEPTION, 0, 0);
return;
}
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
2001-04-10 05:04:59 +04:00
pop_16(&ip);
pop_16(&cs_raw);
pop_16(&flags);
load_seg_reg(&BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS], cs_raw);
I merged the cpu/cpu.h and cpu64/cpu.h files as well as the other header files. There no longer are any *.h files in cpu64/. Had to make some changes to the *.cc files for dealing with accesses to eip.
2002-09-13 04:15:23 +04:00
EIP = (Bit32u) ip;
- included instinc's patch.stack-return-from-v86
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write_flags(flags, /*IOPL*/ 0, /*IF*/ 1);
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
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}
}
void
BX_CPU_C::init_v8086_mode(void)
{
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.valid = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.p = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.dpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.segment = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.executable = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.c_ed = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.r_w = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.a = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.base =
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.value << 4;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.limit = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.limit_scaled = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.g = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.d_b = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.avl = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.rpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.valid = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.p = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.dpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.segment = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.executable = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.c_ed = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.r_w = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.a = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.base =
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].selector.value << 4;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.limit = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.limit_scaled = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.g = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.d_b = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.avl = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].selector.rpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.valid = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.p = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.dpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.segment = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.executable = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.c_ed = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.r_w = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.a = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.base =
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].selector.value << 4;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.limit = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.limit_scaled = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.g = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.d_b = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.avl = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].selector.rpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.valid = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.p = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.dpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.segment = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.executable = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.c_ed = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.r_w = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.a = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.base =
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].selector.value << 4;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.limit = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.limit_scaled = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.g = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.d_b = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.avl = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].selector.rpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.valid = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.p = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.dpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.segment = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.executable = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.c_ed = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.r_w = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.a = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.base =
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].selector.value << 4;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.limit = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.limit_scaled = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.g = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.d_b = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.avl = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].selector.rpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.valid = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.p = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.dpl = 3;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.segment = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.executable = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.c_ed = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.r_w = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.a = 1;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.base =
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].selector.value << 4;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.limit = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.limit_scaled = 0xffff;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.g = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.d_b = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.avl = 0;
BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].selector.rpl = 3;
}
#endif /* BX_CPU_LEVEL >= 3 */
#else // BX_SUPPORT_V8086_MODE
// non-support of v8086 mode
void
BX_CPU_C::stack_return_to_v86(Bit32u new_eip, Bit32u raw_cs_selector, Bit32u flags32)
{
strip '\n' from BX_{INFO,DEBUG,ERROR,PANIC} don't need it, moved the output of it into the general io functions. saves space, as well as removes the confusing output if a '\n' is left off
2001-05-30 22:56:02 +04:00
BX_INFO(("stack_return_to_v86: VM bit set in EFLAGS stack image"));
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
2001-04-10 05:04:59 +04:00
v8086_message();
}
void
BX_CPU_C::stack_return_from_v86(void)
{
strip '\n' from BX_{INFO,DEBUG,ERROR,PANIC} don't need it, moved the output of it into the general io functions. saves space, as well as removes the confusing output if a '\n' is left off
2001-05-30 22:56:02 +04:00
BX_INFO(("stack_return_from_v86:"));
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
2001-04-10 05:04:59 +04:00
v8086_message();
}
void
BX_CPU_C::v8086_message(void)
{
strip '\n' from BX_{INFO,DEBUG,ERROR,PANIC} don't need it, moved the output of it into the general io functions. saves space, as well as removes the confusing output if a '\n' is left off
2001-05-30 22:56:02 +04:00
BX_INFO(("Program compiled with BX_SUPPORT_V8086_MODE = 0"));
BX_INFO(("You need to rerun the configure script and recompile"));
BX_INFO((" to use virtual-8086 mode features."));
BX_PANIC(("Bummer!"));
- entered original Bochs snapshot bochs-2000_0325a.tar.gz from ftp.bochs.com
2001-04-10 05:04:59 +04:00
}
#endif // BX_SUPPORT_V8086_MODE
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