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Fix init values for system registers

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This commit is contained in:
Stanislav Shwartsman 2004-10-16 10:18:01 +00:00
parent a15de4430b
commit 4a9bd714d8
1 changed files with 15 additions and 31 deletions
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46
bochs/cpu/init.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: init.cc,v 1.54 2004-10-13 20:58:16 sshwarts Exp $
// $Id: init.cc,v 1.55 2004-10-16 10:18:01 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
@ -168,7 +168,7 @@ cpu_param_handler (bx_param_c *param, int set, Bit64s val)
void BX_CPU_C::init(BX_MEM_C *addrspace)
{
BX_DEBUG(( "Init $Id: init.cc,v 1.54 2004-10-13 20:58:16 sshwarts Exp $"));
BX_DEBUG(( "Init $Id: init.cc,v 1.55 2004-10-16 10:18:01 sshwarts Exp $"));
// BX_CPU_C constructor
BX_CPU_THIS_PTR set_INTR (0);
#if BX_SUPPORT_APIC
@ -465,17 +465,13 @@ void BX_CPU_C::init(BX_MEM_C *addrspace)
#endif
}
BX_CPU_C::~BX_CPU_C(void)
{
BX_INSTR_SHUTDOWN(BX_CPU_ID);
BX_DEBUG(( "Exit."));
}
void
BX_CPU_C::reset(unsigned source)
void BX_CPU_C::reset(unsigned source)
{
UNUSED(source); // either BX_RESET_HARDWARE or BX_RESET_SOFTWARE
@ -696,25 +692,19 @@ BX_CPU_C::reset(unsigned source)
#endif
/* GDTR (Global Descriptor Table Register) */
#if BX_CPU_LEVEL >= 2
BX_CPU_THIS_PTR gdtr.base = 0x00000000; /* undefined */
BX_CPU_THIS_PTR gdtr.limit = 0x0000; /* undefined */
/* ??? AR=Present, Read/Write */
#endif
/* GDTR (Global Descriptor Table Register) */
BX_CPU_THIS_PTR gdtr.base = 0x00000000;
BX_CPU_THIS_PTR gdtr.limit = 0xFFFF;
/* IDTR (Interrupt Descriptor Table Register) */
#if BX_CPU_LEVEL >= 2
BX_CPU_THIS_PTR idtr.base = 0x00000000;
BX_CPU_THIS_PTR idtr.limit = 0x03FF; /* always byte granular */ /* ??? */
/* ??? AR=Present, Read/Write */
#endif
BX_CPU_THIS_PTR idtr.limit = 0xFFFF; /* always byte granular */
/* LDTR (Local Descriptor Table Register) */
#if BX_CPU_LEVEL >= 2
BX_CPU_THIS_PTR ldtr.selector.value = 0x0000;
BX_CPU_THIS_PTR ldtr.selector.index = 0x0000;
BX_CPU_THIS_PTR ldtr.selector.ti = 0;
BX_CPU_THIS_PTR ldtr.selector.value = 0x0000;
BX_CPU_THIS_PTR ldtr.selector.index = 0x0000;
BX_CPU_THIS_PTR ldtr.selector.ti = 0;
BX_CPU_THIS_PTR ldtr.selector.rpl = 0;
BX_CPU_THIS_PTR ldtr.cache.valid = 0; /* not valid */
@ -725,11 +715,8 @@ BX_CPU_C::reset(unsigned source)
BX_CPU_THIS_PTR ldtr.cache.u.ldt.base = 0x00000000;
BX_CPU_THIS_PTR ldtr.cache.u.ldt.limit = 0xFFFF;
#endif
/* TR (Task Register) */
#if BX_CPU_LEVEL >= 2
/* ??? I don't know what state the TR comes up in */
/* TR (Task Register) */ /* ??? I don't know what state the TR comes up in */
BX_CPU_THIS_PTR tr.selector.value = 0x0000;
BX_CPU_THIS_PTR tr.selector.index = 0x0000; /* undefined */
BX_CPU_THIS_PTR tr.selector.ti = 0;
@ -740,8 +727,8 @@ BX_CPU_C::reset(unsigned source)
BX_CPU_THIS_PTR tr.cache.dpl = 0; /* field not used */
BX_CPU_THIS_PTR tr.cache.segment = 0;
BX_CPU_THIS_PTR tr.cache.type = 0; /* invalid */
BX_CPU_THIS_PTR tr.cache.u.tss286.base = 0x00000000; /* undefined */
BX_CPU_THIS_PTR tr.cache.u.tss286.limit = 0x0000; /* undefined */
BX_CPU_THIS_PTR tr.cache.u.tss286.base = 0x00000000; /* undefined */
BX_CPU_THIS_PTR tr.cache.u.tss286.limit = 0x0000; /* undefined */
#endif
// DR0 - DR7 (Debug Registers)
@ -890,9 +877,7 @@ BX_CPU_C::reset(unsigned source)
BX_INSTR_RESET(BX_CPU_ID);
}
void
BX_CPU_C::sanity_checks(void)
void BX_CPU_C::sanity_checks(void)
{
Bit8u al, cl, dl, bl, ah, ch, dh, bh;
Bit16u ax, cx, dx, bx, sp, bp, si, di;
@ -971,8 +956,7 @@ BX_CPU_C::sanity_checks(void)
}
void
BX_CPU_C::set_INTR(bx_bool value)
void BX_CPU_C::set_INTR(bx_bool value)
{
BX_CPU_THIS_PTR INTR = value;
BX_CPU_THIS_PTR async_event = 1;