280 lines
6.6 KiB
C++
280 lines
6.6 KiB
C++
// Copyright (C) 2001 MandrakeSoft S.A.
|
|
//
|
|
// 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
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#include "bochs.h"
|
|
#define LOG_THIS BX_MEM(0)->
|
|
|
|
|
|
|
|
#if BX_PROVIDE_CPU_MEMORY
|
|
Bit32u
|
|
BX_MEM_C::get_memory_in_k(void)
|
|
{
|
|
return(BX_MEM_THIS megabytes * 1024);
|
|
}
|
|
#endif // #if BX_PROVIDE_CPU_MEMORY
|
|
|
|
|
|
#if BX_PROVIDE_CPU_MEMORY
|
|
// BX_MEM_C constructor
|
|
BX_MEM_C::BX_MEM_C(void)
|
|
{
|
|
char mem[8];
|
|
snprintf(mem, 8, "[MEM%d]", BX_SIM_ID);
|
|
setprefix(mem);
|
|
settype(MEMLOG);
|
|
|
|
vector = NULL;
|
|
len = 0;
|
|
megabytes = 0;
|
|
}
|
|
#endif // #if BX_PROVIDE_CPU_MEMORY
|
|
|
|
|
|
|
|
#if BX_PROVIDE_CPU_MEMORY
|
|
// BX_MEM_C constructor
|
|
BX_MEM_C::BX_MEM_C(size_t memsize)
|
|
{
|
|
vector = new Bit8u[memsize];
|
|
len = memsize;
|
|
megabytes = len / (1024*1024);
|
|
BX_INFO(("Init(%uB == %.2f)\n",memsize, megabytes));
|
|
}
|
|
#endif // #if BX_PROVIDE_CPU_MEMORY
|
|
|
|
|
|
#if BX_PROVIDE_CPU_MEMORY
|
|
// BX_MEM_C destructor
|
|
BX_MEM_C::~BX_MEM_C(void)
|
|
{
|
|
if (this-> vector != NULL) {
|
|
delete this->vector;
|
|
}
|
|
else {
|
|
BX_DEBUG(("(%u) memory not freed as it wasn't allocated!\n", BX_SIM_ID));
|
|
}
|
|
}
|
|
#endif // #if BX_PROVIDE_CPU_MEMORY
|
|
|
|
|
|
#if BX_PROVIDE_CPU_MEMORY
|
|
void
|
|
BX_MEM_C::init_memory(int memsize)
|
|
{
|
|
// you can pass 0 if memory has been allocated already through
|
|
// the constructor, or the desired size of memory if it hasn't
|
|
|
|
if (BX_MEM_THIS vector == NULL) {
|
|
// memory not already allocated, do now...
|
|
BX_MEM_THIS vector = new Bit8u[memsize];
|
|
BX_MEM_THIS len = memsize;
|
|
BX_MEM_THIS megabytes = memsize / (1024*1024);
|
|
BX_INFO(("Init(%uB == %.2fMB).\n", memsize, (float)(BX_MEM_THIS megabytes) ));
|
|
}
|
|
// initialize all memory to 0x00
|
|
memset(BX_MEM_THIS vector, 0x00, BX_MEM_THIS len);
|
|
|
|
// initialize ROM area (0xc0000 .. 0xfffff) to 0xff
|
|
memset(BX_MEM_THIS vector + 0xc0000, 0xff, 0x40000);
|
|
|
|
#if BX_DEBUGGER
|
|
// initialize dirty pages table
|
|
memset(dbg_dirty_pages, 0, sizeof(dbg_dirty_pages));
|
|
|
|
if (megabytes > BX_MAX_DIRTY_PAGE_TABLE_MEGS) {
|
|
BX_INFO(("Error: memory larger than dirty page table can handle\n"));
|
|
BX_PANIC(("Error: increase BX_MAX_DIRTY_PAGE_TABLE_MEGS\n"));
|
|
}
|
|
#endif
|
|
|
|
}
|
|
#endif // #if BX_PROVIDE_CPU_MEMORY
|
|
|
|
|
|
#if BX_PROVIDE_CPU_MEMORY
|
|
void
|
|
BX_MEM_C::load_ROM(const char *path, Bit32u romaddress)
|
|
{
|
|
struct stat stat_buf;
|
|
int fd, ret;
|
|
unsigned long size, offset;
|
|
|
|
// read in ROM BIOS image file
|
|
fd = open(path, O_RDONLY
|
|
#ifdef O_BINARY
|
|
| O_BINARY
|
|
#endif
|
|
);
|
|
if (fd < 0) {
|
|
BX_INFO(( "ROM: couldn't open ROM image file '%s'.\n", path));
|
|
exit(1);
|
|
}
|
|
ret = fstat(fd, &stat_buf);
|
|
if (ret) {
|
|
BX_INFO(( "ROM: couldn't stat ROM image file '%s'.\n", path));
|
|
exit(1);
|
|
}
|
|
|
|
size = stat_buf.st_size;
|
|
|
|
if ( (romaddress + size) > BX_MEM_THIS len ) {
|
|
BX_INFO(( "ROM: ROM address range > physical memsize!\n"));
|
|
exit(1);
|
|
}
|
|
|
|
offset = 0;
|
|
while (size > 0) {
|
|
#if BX_PCI_SUPPORT
|
|
if (bx_options.i440FXSupport)
|
|
ret = read(fd, (bx_ptr_t) &bx_devices.pci->s.i440fx.shadow[romaddress - 0xC0000 + offset],
|
|
size);
|
|
else
|
|
ret = read(fd, (bx_ptr_t) &BX_MEM_THIS vector[romaddress + offset], size);
|
|
#else
|
|
ret = read(fd, (bx_ptr_t) &BX_MEM_THIS vector[romaddress + offset], size);
|
|
#endif
|
|
if (ret <= 0) {
|
|
BX_PANIC(( "ROM: read failed on BIOS image\n"));
|
|
}
|
|
size -= ret;
|
|
offset += ret;
|
|
}
|
|
close(fd);
|
|
#if BX_PCI_SUPPORT
|
|
if (bx_options.i440FXSupport)
|
|
BX_INFO(("rom in i440FX RAM 0x%06x/%u ('%s')\n",
|
|
(unsigned) romaddress,
|
|
(unsigned) stat_buf.st_size,
|
|
path
|
|
));
|
|
else
|
|
BX_INFO(("rom at 0x%06x/%u ('%s')\n",
|
|
(unsigned) romaddress,
|
|
(unsigned) stat_buf.st_size,
|
|
path
|
|
));
|
|
#else // #if BX_PCI_SUPPORT
|
|
BX_INFO(("rom at 0x%06x/%u ('%s')\n",
|
|
(unsigned) romaddress,
|
|
(unsigned) stat_buf.st_size,
|
|
path
|
|
));
|
|
#endif // #if BX_PCI_SUPPORT
|
|
}
|
|
#endif // #if BX_PROVIDE_CPU_MEMORY
|
|
|
|
|
|
#if ( BX_DEBUGGER || BX_DISASM )
|
|
Boolean
|
|
BX_MEM_C::dbg_fetch_mem(Bit32u addr, unsigned len, Bit8u *buf)
|
|
{
|
|
if ( (addr + len) > this->len ) {
|
|
BX_INFO(("dbg_fetch_mem out of range. %p > %p\n",
|
|
addr+len, this->len));
|
|
return(0); // error, beyond limits of memory
|
|
}
|
|
for (; len>0; len--) {
|
|
#if BX_SUPPORT_VGA
|
|
if ( (addr & 0xfffe0000) == 0x000a0000 ) {
|
|
*buf = BX_VGA_MEM_READ(addr);
|
|
}
|
|
else {
|
|
#endif
|
|
#if BX_PCI_SUPPORT == 0
|
|
*buf = vector[addr];
|
|
#else
|
|
if ( bx_options.i440FXSupport &&
|
|
((addr >= 0x000C0000) && (addr <= 0x000FFFFF)) ) {
|
|
switch (bx_devices.pci->rd_memType (addr)) {
|
|
case 0x0: // Fetch from ShadowRAM
|
|
*buf = vector[addr];
|
|
// BX_INFO(("Fetching from ShadowRAM %06x, len %u !\n", (unsigned)addr, (unsigned)len));
|
|
break;
|
|
|
|
case 0x1: // Fetch from ROM
|
|
*buf = bx_pci.s.i440fx.shadow[(addr - 0xC0000)];
|
|
// BX_INFO(("Fetching from ROM %06x, Data %02x \n", (unsigned)addr, *buf));
|
|
break;
|
|
default:
|
|
BX_PANIC(("dbg_fetch_mem: default case\n"));
|
|
}
|
|
}
|
|
else
|
|
*buf = vector[addr];
|
|
#endif // #if BX_PCI_SUPPORT == 0
|
|
}
|
|
buf++;
|
|
addr++;
|
|
}
|
|
return(1);
|
|
}
|
|
#endif
|
|
|
|
#if BX_DEBUGGER
|
|
Boolean
|
|
BX_MEM_C::dbg_set_mem(Bit32u addr, unsigned len, Bit8u *buf)
|
|
{
|
|
if ( (addr + len) > this->len ) {
|
|
return(0); // error, beyond limits of memory
|
|
}
|
|
for (; len>0; len--) {
|
|
#if BX_SUPPORT_VGA
|
|
if ( (addr & 0xfffe0000) == 0x000a0000 ) {
|
|
BX_VGA_MEM_WRITE(addr, *buf);
|
|
}
|
|
else
|
|
#endif
|
|
vector[addr] = *buf;
|
|
buf++;
|
|
addr++;
|
|
}
|
|
return(1);
|
|
}
|
|
#endif
|
|
|
|
Boolean
|
|
BX_MEM_C::dbg_crc32(unsigned long (*f)(unsigned char *buf, int len),
|
|
Bit32u addr1, Bit32u addr2, Bit32u *crc)
|
|
{
|
|
unsigned len;
|
|
|
|
*crc = 0;
|
|
if (addr1 > addr2)
|
|
return(0);
|
|
|
|
if (addr2 >= this->len) {
|
|
return(0); // error, specified address past last phy mem addr
|
|
}
|
|
|
|
len = 1 + addr2 - addr1;
|
|
*crc = f(vector + addr1, len);
|
|
|
|
return(1);
|
|
}
|