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/*
casm - Simple, portable assembler
Copyright (C) 2003-2015 Ian Cowburn (ianc@noddybox.demon.co.uk)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
-------------------------------------------------------------------------
Various output type handlers.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "global.h"
#include "libout.h"
#include "label.h"
/* Magic value for library file
*/
#define CASM_LIBRARY_MAGIC "CASMLIBv1%"
#define CASM_LIBRARY_MAGIC_LEN 10
/* ---------------------------------------- PRIVATE INTERFACES
*/
static void WriteNumber(FILE *fp, int num)
{
fprintf(fp, "%.11d", num);
}
static int ReadNumber(FILE *fp)
{
char buff[12];
int f;
for(f= 0 ;f < 11; f++)
{
buff[f] = getc(fp);
}
buff[f] = 0;
return atoi(buff);
}
/* ---------------------------------------- INTERFACES
*/
const ValueTable *LibOutputOptions(void)
{
return NULL;
}
CommandStatus LibOutputSetOption(int opt, int argc, char *argv[],
int quoted[], char *error, size_t error_size)
{
return CMD_NOT_KNOWN;
}
int LibOutput(const char *filename, const char *filename_bank,
MemoryBank **bank, int count, char *error, size_t error_size)
{
FILE *fp;
char buff[4096];
int f;
if (!(fp = fopen(filename, "wb")))
{
snprintf(error, error_size, "Failed to open %s", filename);
return FALSE;
}
fwrite(CASM_LIBRARY_MAGIC, 1, CASM_LIBRARY_MAGIC_LEN, fp);
WriteNumber(fp, count);
for(f = 0; f < count; f++)
{
const Byte *mem;
int min, max, len;
mem = bank[f]->memory;
min = bank[f]->min_address_used;
max = bank[f]->max_address_used;
len = max - min + 1;
WriteNumber(fp, (int)bank[f]->number);
WriteNumber(fp, min);
WriteNumber(fp, len);
fwrite(mem + min, 1, len, fp);
}
LabelWriteBlob(fp);
fclose(fp);
return TRUE;
}
int LibLoad(const char *filename, LibLoadOption opt,
char *error, size_t error_size)
{
char magic[CASM_LIBRARY_MAGIC_LEN + 1] = {0};
FILE *fp;
Byte buff[0x10000];
int count;
int f;
if (!(fp = fopen(filename, "rb")))
{
snprintf(error, error_size, "Failed to open %s", filename);
return FALSE;
}
fread(magic, 1, CASM_LIBRARY_MAGIC_LEN, fp);
if (strcmp(magic, CASM_LIBRARY_MAGIC) != 0)
{
snprintf(error, error_size, "%s not a recognised library", filename);
fclose(fp);
return FALSE;
}
count = ReadNumber(fp);
for(f = 0; f < count; f++)
{
int bank;
int min;
int len;
int old_pc;
Byte *p;
bank = ReadNumber(fp);
min = ReadNumber(fp);
len = ReadNumber(fp);
SetAddressBank(bank);
fread(buff, 1, len, fp);
old_pc = PC();
SetPC(min);
p = buff;
while(len-- > 0)
{
PCWrite(*p++);
}
SetPC(old_pc);
}
LabelReadBlob(fp);
fclose(fp);
return TRUE;
}
/*
vim: ai sw=4 ts=8 expandtab
*/
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