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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 "global.h"
#include "output.h"
/* ---------------------------------------- GLOBALS
*/
enum option_t
{
OPT_OUTPUTFILE,
OPT_OUTPUTFORMAT
};
static const ValueTable option_set[] =
{
{"output-file", OPT_OUTPUTFILE},
{"output-format", OPT_OUTPUTFORMAT},
{NULL}
};
typedef enum
{
Raw,
SpectrumTap
} Format;
static char output[4096] = "output";
static char error[1024];
static Format format = Raw;
static ValueTable format_table[] =
{
{"raw", Raw},
{"spectrum", SpectrumTap},
{NULL}
};
/* ---------------------------------------- PRIVATE FUNCTIONS
*/
static int OutputRawBinary(MemoryBank **bank, int count)
{
char buff[4096];
int f;
for(f = 0; f < count; f++)
{
FILE *fp;
const char *name;
const Byte *mem;
int min, max;
if (count == 1)
{
name = output;
}
else
{
snprintf(buff, sizeof buff, "%s.%u", output, bank[f]->number);
name = buff;
}
if (!(fp = fopen(name, "wb")))
{
snprintf(error, sizeof error,"Failed to open %s\n", name);
return FALSE;
}
mem = bank[f]->memory;
min = bank[f]->min_address_used;
max = bank[f]->max_address_used;
fwrite(mem + min, 1, max - min + 1, fp);
fclose(fp);
}
return TRUE;
}
static Byte TapByte(FILE *fp, Byte b, Byte chk)
{
chk ^= b;
putc(b, fp);
return chk;
}
static Byte TapWord(FILE *fp, int w, Byte chk)
{
chk = TapByte(fp, w & 0xff, chk);
chk = TapByte(fp, (w & 0xff00) >> 8, chk);
return chk;
}
static Byte TapString(FILE *fp, const char *p, int len, Byte chk)
{
while(len--)
{
chk = TapByte(fp, *p ? *p++ : ' ', chk);
}
return chk;
}
static int OutputSpectrumTap(MemoryBank **bank, int count)
{
FILE *fp = fopen(output, "wb");
int f;
if (!fp)
{
snprintf(error, sizeof error,"Failed to open %s\n", output);
return FALSE;
}
/* Output header
*/
for(f = 0; f < count; f++)
{
Byte chk = 0;
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;
TapWord(fp, 19, 0);
chk = TapByte(fp, 0, chk);
chk = TapByte(fp, 3, chk);
chk = TapString(fp, output, 10, chk);
chk = TapWord(fp, len, chk);
chk = TapWord(fp, min, chk);
chk = TapWord(fp, 32768, chk);
TapByte(fp, chk, 0);
/* Output file data
*/
TapWord(fp, len + 2, 0);
chk = 0;
chk = TapByte(fp, 0xff, chk);
while(min <= max)
{
chk = TapByte(fp, mem[min], chk);
min++;
}
TapByte(fp, chk, 0);
}
fclose(fp);
return TRUE;
}
/* ---------------------------------------- INTERFACES
*/
const ValueTable *OutputOptions(void)
{
return option_set;
}
CommandStatus OutputSetOption(int opt, int argc, char *argv[],
int quoted[], char *err, size_t errsize)
{
const ValueTable *val;
CMD_ARGC_CHECK(1);
switch(opt)
{
case OPT_OUTPUTFILE:
CopyStr(output, argv[0], sizeof output);
break;
case OPT_OUTPUTFORMAT:
CMD_TABLE(argv[0], format_table, val);
format = val->value;
break;
default:
break;
}
return CMD_OK;
}
int OutputCode(void)
{
MemoryBank **bank;
int count;
int min;
int max;
const Byte *mem;
bank = MemoryBanks(&count);
if (!bank)
{
fprintf(stderr, "Skipping output; no written memory to write\n");
return TRUE;
}
switch(format)
{
case Raw:
return OutputRawBinary(bank, count);
case SpectrumTap:
return OutputSpectrumTap(bank, count);
default:
break;
}
}
const char *OutputError(void)
{
return error;
}
/*
vim: ai sw=4 ts=8 expandtab
*/
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