cec9135e9f
"bx_bool" which is always defined as Bit32u on all platforms. In Carbon
specific code, Boolean is still used because the Carbon header files
define it to unsigned char.
- this fixes bug [ 623152 ] MacOSX: Triple Exception Booting win95.
The bug was that some code in Bochs depends on Boolean to be a
32 bit value. (This should be fixed, but I don't know all the places
where it needs to be fixed yet.) Because Carbon defined Boolean as
an unsigned char, Bochs just followed along and used the unsigned char
definition to avoid compile problems. This exposed the dependency
on 32 bit Boolean on MacOS X only and led to major simulation problems,
that could only be reproduced and debugged on that platform.
- On the mailing list we debated whether to make all Booleans into "bool" or
our own type. I chose bx_bool for several reasons.
1. Unlike C++'s bool, we can guarantee that bx_bool is the same size on all
platforms, which makes it much less likely to have more platform-specific
simulation differences in the future. (I spent hours on a borrowed
MacOSX machine chasing bug 618388 before discovering that different sized
Booleans were the problem, and I don't want to repeat that.)
2. We still have at least one dependency on 32 bit Booleans which must be
fixed some time, but I don't want to risk introducing new bugs into the
simulation just before the 2.0 release.
Modified Files:
bochs.h config.h.in gdbstub.cc logio.cc main.cc pc_system.cc
pc_system.h plugin.cc plugin.h bios/rombios.c cpu/apic.cc
cpu/arith16.cc cpu/arith32.cc cpu/arith64.cc cpu/arith8.cc
cpu/cpu.cc cpu/cpu.h cpu/ctrl_xfer16.cc cpu/ctrl_xfer32.cc
cpu/ctrl_xfer64.cc cpu/data_xfer16.cc cpu/data_xfer32.cc
cpu/data_xfer64.cc cpu/debugstuff.cc cpu/exception.cc
cpu/fetchdecode.cc cpu/flag_ctrl_pro.cc cpu/init.cc
cpu/io_pro.cc cpu/lazy_flags.cc cpu/lazy_flags.h cpu/mult16.cc
cpu/mult32.cc cpu/mult64.cc cpu/mult8.cc cpu/paging.cc
cpu/proc_ctrl.cc cpu/segment_ctrl_pro.cc cpu/stack_pro.cc
cpu/tasking.cc debug/dbg_main.cc debug/debug.h debug/sim2.cc
disasm/dis_decode.cc disasm/disasm.h doc/docbook/Makefile
docs-html/cosimulation.html fpu/wmFPUemu_glue.cc
gui/amigaos.cc gui/beos.cc gui/carbon.cc gui/gui.cc gui/gui.h
gui/keymap.cc gui/keymap.h gui/macintosh.cc gui/nogui.cc
gui/rfb.cc gui/sdl.cc gui/siminterface.cc gui/siminterface.h
gui/term.cc gui/win32.cc gui/wx.cc gui/wxmain.cc gui/wxmain.h
gui/x.cc instrument/example0/instrument.cc
instrument/example0/instrument.h
instrument/example1/instrument.cc
instrument/example1/instrument.h
instrument/stubs/instrument.cc instrument/stubs/instrument.h
iodev/cdrom.cc iodev/cdrom.h iodev/cdrom_osx.cc iodev/cmos.cc
iodev/devices.cc iodev/dma.cc iodev/dma.h iodev/eth_arpback.cc
iodev/eth_packetmaker.cc iodev/eth_packetmaker.h
iodev/floppy.cc iodev/floppy.h iodev/guest2host.h
iodev/harddrv.cc iodev/harddrv.h iodev/ioapic.cc
iodev/ioapic.h iodev/iodebug.cc iodev/iodev.h
iodev/keyboard.cc iodev/keyboard.h iodev/ne2k.h
iodev/parallel.h iodev/pci.cc iodev/pci.h iodev/pic.h
iodev/pit.cc iodev/pit.h iodev/pit_wrap.cc iodev/pit_wrap.h
iodev/sb16.cc iodev/sb16.h iodev/serial.cc iodev/serial.h
iodev/vga.cc iodev/vga.h memory/memory.h memory/misc_mem.cc
104 lines
2.9 KiB
C++
104 lines
2.9 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: pit.h,v 1.10 2002-10-25 11:44:40 bdenney Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef _BX_PIT_H
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#define _BX_PIT_H
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#include "config.h"
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#if (BX_USE_NEW_PIT==0)
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#if BX_USE_PIT_SMF
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# define BX_PIT_SMF static
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# define BX_PIT_THIS bx_pit.
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#else
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# define BX_PIT_SMF
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# define BX_PIT_THIS this->
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#endif
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#ifdef OUT
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# undef OUT
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#endif
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typedef struct {
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Bit8u mode;
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Bit8u latch_mode;
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Bit16u input_latch_value;
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bx_bool input_latch_toggle;
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Bit16u output_latch_value;
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bx_bool output_latch_toggle;
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bx_bool output_latch_full;
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Bit16u counter_max;
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Bit16u counter;
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bx_bool bcd_mode;
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bx_bool active;
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bx_bool GATE; // GATE input pin
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bx_bool OUT; // OUT output pin
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} bx_pit_t;
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class bx_pit_c : public logfunctions {
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public:
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bx_pit_c( void );
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~bx_pit_c( void );
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BX_PIT_SMF int init(void);
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BX_PIT_SMF void reset( unsigned type);
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BX_PIT_SMF bx_bool periodic( Bit32u usec_delta );
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BX_PIT_SMF int SaveState( class state_file *fd );
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BX_PIT_SMF int LoadState( class state_file *fd );
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private:
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static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len);
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static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len);
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#if !BX_USE_PIT_SMF
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Bit32u read( Bit32u addr, unsigned int len );
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void write( Bit32u addr, Bit32u Value, unsigned int len );
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#endif
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struct s_type {
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bx_pit_t timer[3];
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Bit8u speaker_data_on;
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bx_bool refresh_clock_div2;
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int timer_handle[3];
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} s;
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BX_PIT_SMF void write_count_reg( Bit8u value, unsigned timerid );
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BX_PIT_SMF Bit8u read_counter( unsigned timerid );
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BX_PIT_SMF void latch( unsigned timerid );
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BX_PIT_SMF void set_GATE(unsigned pit_id, unsigned value);
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BX_PIT_SMF void start(unsigned timerid);
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};
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extern bx_pit_c bx_pit;
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#endif // #if (BX_USE_NEW_PIT==0)
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#endif // #ifndef _BX_PIT_H
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