9838b7032e
This is strictly the application of the script 'x-indent-all.sh' from util/modular. Compared to the patch that Daniel posted in January, I've added a few indent flags: -bap -psl -T PrivatePtr -T pmWait -T _XFUNCPROTOBEGIN -T _XFUNCPROTOEND -T _X_EXPORT The typedefs were needed to make the output of sdksyms.sh match the previous output, otherwise, the code is formatted badly enough that sdksyms.sh generates incorrect output. The generated code was compared with the previous version and found to be essentially identical -- "assert" line numbers and BUILD_TIME were the only differences found. The comparison was done with this script: dir1=$1 dir2=$2 for dir in $dir1 $dir2; do (cd $dir && find . -name '*.o' | while read file; do dir=`dirname $file` base=`basename $file .o` dump=$dir/$base.dump objdump -d $file > $dump done) done find $dir1 -name '*.dump' | while read dump; do otherdump=`echo $dump | sed "s;$dir1;$dir2;"` diff -u $dump $otherdump done Signed-off-by: Keith Packard <keithp@keithp.com> Acked-by: Daniel Stone <daniel@fooishbar.org> Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
551 lines
15 KiB
C
551 lines
15 KiB
C
/****************************************************************************
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*
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* Realmode X86 Emulator Library
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*
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* Copyright (C) 1996-1999 SciTech Software, Inc.
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* Copyright (C) David Mosberger-Tang
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* Copyright (C) 1999 Egbert Eich
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*
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* ========================================================================
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of the authors not be used
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* in advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The authors makes no
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* representations about the suitability of this software for any purpose.
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* It is provided "as is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*
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* ========================================================================
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*
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* Language: ANSI C
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* Environment: Any
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* Developer: Kendall Bennett
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*
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* Description: This file includes subroutines which are related to
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* programmed I/O and memory access. Included in this module
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* are default functions with limited usefulness. For real
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* uses these functions will most likely be overriden by the
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* user library.
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*
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****************************************************************************/
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#include "x86emu.h"
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#include "x86emu/x86emui.h"
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#include "x86emu/regs.h"
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#include "x86emu/debug.h"
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#include "x86emu/prim_ops.h"
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#ifndef NO_SYS_HEADERS
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#include <string.h>
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#endif
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#ifdef __GNUC__
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/* Define some packed structures to use with unaligned accesses */
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struct __una_u64 {
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u64 x __attribute__ ((packed));
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};
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struct __una_u32 {
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u32 x __attribute__ ((packed));
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};
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struct __una_u16 {
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u16 x __attribute__ ((packed));
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};
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/* Elemental unaligned loads */
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static __inline__ u64
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ldq_u(u64 * p)
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{
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const struct __una_u64 *ptr = (const struct __una_u64 *) p;
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return ptr->x;
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}
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static __inline__ u32
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ldl_u(u32 * p)
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{
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const struct __una_u32 *ptr = (const struct __una_u32 *) p;
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return ptr->x;
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}
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static __inline__ u16
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ldw_u(u16 * p)
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{
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const struct __una_u16 *ptr = (const struct __una_u16 *) p;
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return ptr->x;
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}
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/* Elemental unaligned stores */
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static __inline__ void
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stq_u(u64 val, u64 * p)
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{
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struct __una_u64 *ptr = (struct __una_u64 *) p;
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ptr->x = val;
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}
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static __inline__ void
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stl_u(u32 val, u32 * p)
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{
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struct __una_u32 *ptr = (struct __una_u32 *) p;
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ptr->x = val;
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}
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static __inline__ void
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stw_u(u16 val, u16 * p)
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{
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struct __una_u16 *ptr = (struct __una_u16 *) p;
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ptr->x = val;
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}
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#else /* !__GNUC__ */
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static __inline__ u64
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ldq_u(u64 * p)
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{
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u64 ret;
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memmove(&ret, p, sizeof(*p));
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return ret;
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}
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static __inline__ u32
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ldl_u(u32 * p)
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{
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u32 ret;
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memmove(&ret, p, sizeof(*p));
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return ret;
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}
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static __inline__ u16
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ldw_u(u16 * p)
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{
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u16 ret;
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memmove(&ret, p, sizeof(*p));
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return ret;
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}
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static __inline__ void
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stq_u(u64 val, u64 * p)
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{
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u64 tmp = val;
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memmove(p, &tmp, sizeof(*p));
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}
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static __inline__ void
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stl_u(u32 val, u32 * p)
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{
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u32 tmp = val;
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memmove(p, &tmp, sizeof(*p));
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}
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static __inline__ void
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stw_u(u16 val, u16 * p)
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{
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u16 tmp = val;
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memmove(p, &tmp, sizeof(*p));
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}
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#endif /* __GNUC__ */
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/*------------------------- Global Variables ------------------------------*/
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X86EMU_sysEnv _X86EMU_env; /* Global emulator machine state */
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X86EMU_intrFuncs _X86EMU_intrTab[256];
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/*----------------------------- Implementation ----------------------------*/
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/****************************************************************************
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PARAMETERS:
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addr - Emulator memory address to read
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RETURNS:
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Byte value read from emulator memory.
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REMARKS:
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Reads a byte value from the emulator memory.
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****************************************************************************/
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u8 X86API
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rdb(u32 addr)
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{
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u8 val;
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if (addr > M.mem_size - 1) {
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DB(printk("mem_read: address %#lx out of range!\n", addr);
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)
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HALT_SYS();
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}
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val = *(u8 *) (M.mem_base + addr);
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DB(if (DEBUG_MEM_TRACE())
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printk("%#08x 1 -> %#x\n", addr, val);)
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return val;
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}
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/****************************************************************************
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PARAMETERS:
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addr - Emulator memory address to read
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RETURNS:
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Word value read from emulator memory.
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REMARKS:
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Reads a word value from the emulator memory.
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****************************************************************************/
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u16 X86API
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rdw(u32 addr)
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{
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u16 val = 0;
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if (addr > M.mem_size - 2) {
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DB(printk("mem_read: address %#lx out of range!\n", addr);
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)
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HALT_SYS();
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}
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#ifdef __BIG_ENDIAN__
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if (addr & 0x1) {
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val = (*(u8 *) (M.mem_base + addr) |
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(*(u8 *) (M.mem_base + addr + 1) << 8));
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}
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else
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#endif
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val = ldw_u((u16 *) (M.mem_base + addr));
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DB(if (DEBUG_MEM_TRACE())
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printk("%#08x 2 -> %#x\n", addr, val);)
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return val;
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}
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/****************************************************************************
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PARAMETERS:
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addr - Emulator memory address to read
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RETURNS:
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Long value read from emulator memory.
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REMARKS:
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Reads a long value from the emulator memory.
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****************************************************************************/
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u32 X86API
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rdl(u32 addr)
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{
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u32 val = 0;
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if (addr > M.mem_size - 4) {
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DB(printk("mem_read: address %#lx out of range!\n", addr);
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)
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HALT_SYS();
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}
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#ifdef __BIG_ENDIAN__
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if (addr & 0x3) {
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val = (*(u8 *) (M.mem_base + addr + 0) |
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(*(u8 *) (M.mem_base + addr + 1) << 8) |
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(*(u8 *) (M.mem_base + addr + 2) << 16) |
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(*(u8 *) (M.mem_base + addr + 3) << 24));
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}
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else
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#endif
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val = ldl_u((u32 *) (M.mem_base + addr));
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DB(if (DEBUG_MEM_TRACE())
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printk("%#08x 4 -> %#x\n", addr, val);)
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return val;
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}
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/****************************************************************************
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PARAMETERS:
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addr - Emulator memory address to read
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val - Value to store
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REMARKS:
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Writes a byte value to emulator memory.
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****************************************************************************/
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void X86API
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wrb(u32 addr, u8 val)
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{
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DB(if (DEBUG_MEM_TRACE())
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printk("%#08x 1 <- %#x\n", addr, val);)
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if (addr > M.mem_size - 1) {
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DB(printk("mem_write: address %#lx out of range!\n", addr);
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)
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HALT_SYS();
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}
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*(u8 *) (M.mem_base + addr) = val;
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}
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/****************************************************************************
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PARAMETERS:
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addr - Emulator memory address to read
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val - Value to store
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REMARKS:
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Writes a word value to emulator memory.
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****************************************************************************/
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void X86API
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wrw(u32 addr, u16 val)
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{
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DB(if (DEBUG_MEM_TRACE())
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printk("%#08x 2 <- %#x\n", addr, val);)
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if (addr > M.mem_size - 2) {
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DB(printk("mem_write: address %#lx out of range!\n", addr);
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)
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HALT_SYS();
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}
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#ifdef __BIG_ENDIAN__
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if (addr & 0x1) {
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*(u8 *) (M.mem_base + addr + 0) = (val >> 0) & 0xff;
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*(u8 *) (M.mem_base + addr + 1) = (val >> 8) & 0xff;
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}
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else
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#endif
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stw_u(val, (u16 *) (M.mem_base + addr));
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}
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/****************************************************************************
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PARAMETERS:
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addr - Emulator memory address to read
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val - Value to store
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REMARKS:
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Writes a long value to emulator memory.
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****************************************************************************/
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void X86API
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wrl(u32 addr, u32 val)
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{
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DB(if (DEBUG_MEM_TRACE())
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printk("%#08x 4 <- %#x\n", addr, val);)
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if (addr > M.mem_size - 4) {
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DB(printk("mem_write: address %#lx out of range!\n", addr);
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)
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HALT_SYS();
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}
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#ifdef __BIG_ENDIAN__
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if (addr & 0x1) {
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*(u8 *) (M.mem_base + addr + 0) = (val >> 0) & 0xff;
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*(u8 *) (M.mem_base + addr + 1) = (val >> 8) & 0xff;
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*(u8 *) (M.mem_base + addr + 2) = (val >> 16) & 0xff;
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*(u8 *) (M.mem_base + addr + 3) = (val >> 24) & 0xff;
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}
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else
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#endif
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stl_u(val, (u32 *) (M.mem_base + addr));
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}
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/****************************************************************************
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PARAMETERS:
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addr - PIO address to read
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RETURN:
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0
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REMARKS:
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Default PIO byte read function. Doesn't perform real inb.
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****************************************************************************/
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static u8 X86API
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p_inb(X86EMU_pioAddr addr)
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{
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DB(if (DEBUG_IO_TRACE())
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printk("inb %#04x \n", addr);)
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return 0;
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}
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/****************************************************************************
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PARAMETERS:
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addr - PIO address to read
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RETURN:
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0
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REMARKS:
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Default PIO word read function. Doesn't perform real inw.
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****************************************************************************/
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static u16 X86API
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p_inw(X86EMU_pioAddr addr)
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{
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DB(if (DEBUG_IO_TRACE())
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printk("inw %#04x \n", addr);)
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return 0;
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}
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/****************************************************************************
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PARAMETERS:
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addr - PIO address to read
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RETURN:
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0
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REMARKS:
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Default PIO long read function. Doesn't perform real inl.
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****************************************************************************/
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static u32 X86API
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p_inl(X86EMU_pioAddr addr)
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{
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DB(if (DEBUG_IO_TRACE())
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printk("inl %#04x \n", addr);)
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return 0;
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}
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/****************************************************************************
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PARAMETERS:
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addr - PIO address to write
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val - Value to store
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REMARKS:
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Default PIO byte write function. Doesn't perform real outb.
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****************************************************************************/
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static void X86API
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p_outb(X86EMU_pioAddr addr, u8 val)
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{
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DB(if (DEBUG_IO_TRACE())
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printk("outb %#02x -> %#04x \n", val, addr);)
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return;
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}
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/****************************************************************************
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PARAMETERS:
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addr - PIO address to write
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val - Value to store
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REMARKS:
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Default PIO word write function. Doesn't perform real outw.
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****************************************************************************/
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static void X86API
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p_outw(X86EMU_pioAddr addr, u16 val)
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{
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DB(if (DEBUG_IO_TRACE())
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printk("outw %#04x -> %#04x \n", val, addr);)
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return;
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}
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/****************************************************************************
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PARAMETERS:
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addr - PIO address to write
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val - Value to store
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REMARKS:
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Default PIO ;ong write function. Doesn't perform real outl.
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****************************************************************************/
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static void X86API
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p_outl(X86EMU_pioAddr addr, u32 val)
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{
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DB(if (DEBUG_IO_TRACE())
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printk("outl %#08x -> %#04x \n", val, addr);)
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return;
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}
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/*------------------------- Global Variables ------------------------------*/
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u8(X86APIP sys_rdb) (u32 addr) = rdb;
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u16(X86APIP sys_rdw) (u32 addr) = rdw;
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u32(X86APIP sys_rdl) (u32 addr) = rdl;
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void (X86APIP sys_wrb) (u32 addr, u8 val) = wrb;
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void (X86APIP sys_wrw) (u32 addr, u16 val) = wrw;
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void (X86APIP sys_wrl) (u32 addr, u32 val) = wrl;
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u8(X86APIP sys_inb) (X86EMU_pioAddr addr) = p_inb;
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u16(X86APIP sys_inw) (X86EMU_pioAddr addr) = p_inw;
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u32(X86APIP sys_inl) (X86EMU_pioAddr addr) = p_inl;
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void (X86APIP sys_outb) (X86EMU_pioAddr addr, u8 val) = p_outb;
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void (X86APIP sys_outw) (X86EMU_pioAddr addr, u16 val) = p_outw;
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void (X86APIP sys_outl) (X86EMU_pioAddr addr, u32 val) = p_outl;
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/*----------------------------- Setup -------------------------------------*/
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/****************************************************************************
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PARAMETERS:
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funcs - New memory function pointers to make active
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REMARKS:
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This function is used to set the pointers to functions which access
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memory space, allowing the user application to override these functions
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and hook them out as necessary for their application.
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****************************************************************************/
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void
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X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs)
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{
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sys_rdb = funcs->rdb;
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sys_rdw = funcs->rdw;
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sys_rdl = funcs->rdl;
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sys_wrb = funcs->wrb;
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sys_wrw = funcs->wrw;
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sys_wrl = funcs->wrl;
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}
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/****************************************************************************
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PARAMETERS:
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funcs - New programmed I/O function pointers to make active
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REMARKS:
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This function is used to set the pointers to functions which access
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I/O space, allowing the user application to override these functions
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and hook them out as necessary for their application.
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****************************************************************************/
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void
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X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs)
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{
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sys_inb = funcs->inb;
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sys_inw = funcs->inw;
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sys_inl = funcs->inl;
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sys_outb = funcs->outb;
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sys_outw = funcs->outw;
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sys_outl = funcs->outl;
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}
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/****************************************************************************
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PARAMETERS:
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funcs - New interrupt vector table to make active
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REMARKS:
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This function is used to set the pointers to functions which handle
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interrupt processing in the emulator, allowing the user application to
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hook interrupts as necessary for their application. Any interrupts that
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are not hooked by the user application, and reflected and handled internally
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in the emulator via the interrupt vector table. This allows the application
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to get control when the code being emulated executes specific software
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interrupts.
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****************************************************************************/
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void
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X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[])
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{
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int i;
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for (i = 0; i < 256; i++)
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_X86EMU_intrTab[i] = NULL;
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if (funcs) {
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for (i = 0; i < 256; i++)
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_X86EMU_intrTab[i] = funcs[i];
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}
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}
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/****************************************************************************
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PARAMETERS:
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int - New software interrupt to prepare for
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REMARKS:
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This function is used to set up the emulator state to exceute a software
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interrupt. This can be used by the user application code to allow an
|
|
interrupt to be hooked, examined and then reflected back to the emulator
|
|
so that the code in the emulator will continue processing the software
|
|
interrupt as per normal. This essentially allows system code to actively
|
|
hook and handle certain software interrupts as necessary.
|
|
****************************************************************************/
|
|
void
|
|
X86EMU_prepareForInt(int num)
|
|
{
|
|
push_word((u16) M.x86.R_FLG);
|
|
CLEAR_FLAG(F_IF);
|
|
CLEAR_FLAG(F_TF);
|
|
push_word(M.x86.R_CS);
|
|
M.x86.R_CS = mem_access_word(num * 4 + 2);
|
|
push_word(M.x86.R_IP);
|
|
M.x86.R_IP = mem_access_word(num * 4);
|
|
M.x86.intr = 0;
|
|
}
|