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/*
* Copyright (c) 2007 MIPS Technologies, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Jaidev Patwardhan
*/
#include <cctype>
#include <cstdio>
#include <list>
#include <string>
#include "base/loader/hex_file.hh"
#include "base/loader/symtab.hh"
#include "base/cprintf.hh"
#include "mem/port_proxy.hh"
using namespace std;
/*
* Load a Hex File into memory. Currently only used with MIPS
* BARE_IRON mode. A hex file consists of [Address Data] tuples that
* get directly loaded into physical memory. The address specified is
* a word address (i.e., to get the byte address, shift left by 2) The
* data is a full 32-bit hex value.
*/
HexFile::HexFile(const string _filename)
: filename(_filename)
{
fp = fopen(filename.c_str(), "r");
if (fp == NULL)
panic("Unable to open %s\n", filename.c_str());
}
HexFile::~HexFile()
{
if (fp != NULL)
fclose(fp);
}
bool
HexFile::loadSections(PortProxy& memProxy)
{
char Line[64];
Addr MemAddr;
uint32_t Data;
while (!feof(fp)) {
char *ret = fgets(Line, sizeof(Line), fp);
if (!ret)
panic("malformed file");
parseLine(Line, &MemAddr, &Data);
if (MemAddr != 0) {
// Now, write to memory
memProxy.writeBlob(MemAddr << 2, (uint8_t *)&Data, sizeof(Data));
}
}
return true;
}
void
HexFile::parseLine(char *Str, Addr *A, uint32_t *D)
{
int i = 0;
bool Flag = false;
*A = 0;
*D = 0;
int Digit = 0;
unsigned Number = 0;
/* Skip white spaces */
while (Str[i] != '\0' && Str[i]==' ')
i++;
/* Ok, we're at some character...process things */
while (Str[i] != '\0') {
if (Str[i] >= '0' && Str[i] <= '9') {
Digit = Str[i] - '0';
} else if (Str[i] >= 'a' && Str[i] <= 'f') {
Digit = Str[i] - 'a' + 10;
} else if (Str[i] >= 'A' && Str[i] <= 'F') {
Digit=Str[i]-'A'+10;
} else if (Str[i] == ' ' || Str[i] == '\n') {
if (Number == 0)
return;
if (!Flag) {
*A = Number;
Number = 0;
Flag = true;
} else {
*D = Number;
return;
}
} else {
// Ok, we've encountered a non-hex character, cannot be a
// valid line, skip and return 0's
*A = 0;
*D = 0;
return;
}
Number <<= 4;
Number += Digit;
i++;
}
if (!Flag) {
*A = 0;
*D = 0;
} else {
*D = Number;
}
}
void
HexFile::close()
{
fclose(fp);
}
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