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(cpu64) Merged io.cc.

This commit is contained in:
Kevin Lawton 2002-09-15 02:55:34 +00:00
parent b68c2b929a
commit 918442ae4a
2 changed files with 67 additions and 19 deletions
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2
bochs/cpu/Makefile.in
View File

@ -52,7 +52,6 @@ EXT_DEBUG_OBJS = @EXT_DEBUG_OBJS@
OBJS32 = \
paging.o \
bit.o \
io.o \
string.o \
$(EXT_DEBUG_OBJS) \
@ -104,6 +103,7 @@ OBJSXX = \
arith32.o \
ctrl_xfer_pro.o \
segment_ctrl_pro.o \
io.o \
# Objects which are only used for x86-64 code, but which have been

84
bochs/cpu/io.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: io.cc,v 1.11 2002-09-12 18:10:41 bdenney Exp $
// $Id: io.cc,v 1.12 2002-09-15 02:55:34 kevinlawton Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
@ -35,6 +35,12 @@
#define LOG_THIS BX_CPU_THIS_PTR
#if BX_SUPPORT_X86_64==0
// Make life easier for merging cpu64 and cpu32 code.
#define RDI EDI
#define RSI ESI
#define RAX EAX
#endif
@ -49,7 +55,24 @@ BX_CPU_C::INSB_YbDX(BxInstruction_t *i)
}
}
if (i->as_32) {
if (i->as_64) {
// Write a zero to memory, to trigger any segment or page
// faults before reading from IO port.
write_virtual_byte(BX_SEG_REG_ES, RDI, &value8);
value8 = BX_INP(DX, 1);
/* no seg override possible */
write_virtual_byte(BX_SEG_REG_ES, RDI, &value8);
if (BX_CPU_THIS_PTR get_DF ()) {
RDI = RDI - 1;
}
else {
RDI = RDI + 1;
}
}
else if (i->as_32) {
// Write a zero to memory, to trigger any segment or page
// faults before reading from IO port.
write_virtual_byte(BX_SEG_REG_ES, EDI, &value8);
@ -60,10 +83,10 @@ BX_CPU_C::INSB_YbDX(BxInstruction_t *i)
write_virtual_byte(BX_SEG_REG_ES, EDI, &value8);
if (BX_CPU_THIS_PTR get_DF ()) {
EDI = EDI - 1;
RDI = EDI - 1;
}
else {
EDI = EDI + 1;
RDI = EDI + 1;
}
}
else {
@ -89,10 +112,15 @@ BX_CPU_C::INSB_YbDX(BxInstruction_t *i)
BX_CPU_C::INSW_YvDX(BxInstruction_t *i)
// input word/doubleword from port to string
{
Bit32u edi;
bx_address edi;
unsigned int incr;
if (i->as_32)
#if BX_SUPPORT_X86_64
#warning "KPL: Changed if (i->as_32) to if (i->as_64) below. Typo?"
#endif
if (i->as_64) // This was coded as if (i->as_64) ???
edi = RDI;
else if (i->as_32)
edi = EDI;
else
edi = DI;
@ -289,11 +317,18 @@ doIncr:
#endif
#endif
if (i->as_64) {
if (BX_CPU_THIS_PTR get_DF ())
RDI = RDI - incr;
else
RDI = RDI + incr;
}
else
if (i->as_32) {
if (BX_CPU_THIS_PTR get_DF ())
EDI = EDI - incr;
RDI = EDI - incr;
else
EDI = EDI + incr;
RDI = EDI + incr;
}
else {
if (BX_CPU_THIS_PTR get_DF ())
@ -308,7 +343,7 @@ BX_CPU_C::OUTSB_DXXb(BxInstruction_t *i)
{
unsigned seg;
Bit8u value8;
Bit32u esi;
bx_address esi;
if (BX_CPU_THIS_PTR cr0.pe && (BX_CPU_THIS_PTR get_VM () || (CPL>BX_CPU_THIS_PTR get_IOPL ()))) {
if ( !BX_CPU_THIS_PTR allow_io(DX, 1) ) {
@ -323,7 +358,9 @@ BX_CPU_C::OUTSB_DXXb(BxInstruction_t *i)
seg = BX_SEG_REG_DS;
}
if (i->as_32)
if (i->as_64)
esi = RSI;
else if (i->as_32)
esi = ESI;
else
esi = SI;
@ -334,9 +371,9 @@ BX_CPU_C::OUTSB_DXXb(BxInstruction_t *i)
if (i->as_32) {
if (BX_CPU_THIS_PTR get_DF ())
ESI -= 1;
RSI -= 1;
else
ESI += 1;
RSI += 1;
}
else {
if (BX_CPU_THIS_PTR get_DF ())
@ -361,7 +398,9 @@ BX_CPU_C::OUTSW_DXXv(BxInstruction_t *i)
seg = BX_SEG_REG_DS;
}
if (i->as_32)
if (i->as_64)
esi = RSI;
else if (i->as_32)
esi = ESI;
else
esi = SI;
@ -548,11 +587,20 @@ doIncr:
#endif
#endif
if (i->as_32) {
#if BX_SUPPORT_X86_64
#warning "KPL: Changed if (i->as_32) to if (i->as_64) below. Typo?"
#endif
if (i->as_64) { // Was coded as if (i->as_32)
if (BX_CPU_THIS_PTR get_DF ())
ESI = ESI - incr;
RSI = RSI - incr;
else
ESI = ESI + incr;
RSI = RSI + incr;
}
else if (i->as_32) {
if (BX_CPU_THIS_PTR get_DF ())
RSI = ESI - incr;
else
RSI = ESI + incr;
}
else {
if (BX_CPU_THIS_PTR get_DF ())
@ -588,7 +636,7 @@ BX_CPU_C::IN_eAXIb(BxInstruction_t *i)
Bit32u eax;
eax = BX_CPU_THIS_PTR inp32(imm8);
EAX = eax;
RAX = eax;
}
else
#endif /* BX_CPU_LEVEL > 2 */
@ -648,7 +696,7 @@ BX_CPU_C::IN_eAXDX(BxInstruction_t *i)
Bit32u eax;
eax = BX_CPU_THIS_PTR inp32(DX);
EAX = eax;
RAX = eax;
}
else
#endif /* BX_CPU_LEVEL > 2 */