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//==========================================================================
//
// gunzip.c
//
// RedBoot GZIP uncompress command
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// eCos 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 2 or (at your option) any later
// version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): Peter Korsgaard
// Contributors: Peter Korsgaard
// Date: 2005-04-04
// Purpose:
// Description:
//
// This code is part of RedBoot (tm).
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <redboot.h>
RedBoot_cmd("gunzip",
"Uncompress GZIP compressed data",
"-s <location> -d <location>",
do_gunzip
);
void
do_gunzip(int argc, char *argv[])
{
struct option_info opts[2];
unsigned long src, dst;
bool src_set, dst_set;
_pipe_t pipe;
_pipe_t* p = &pipe;
int err;
init_opts(&opts[0], 's', true, OPTION_ARG_TYPE_NUM,
(void *)&src, (bool *)&src_set, "source address");
init_opts(&opts[1], 'd', true, OPTION_ARG_TYPE_NUM,
(void *)&dst, (bool *)&dst_set, "destination address");
if (!scan_opts(argc, argv, 1, opts, 2, 0, 0, "")) {
return;
}
// Must have src and dst
if (!src_set || !dst_set) {
// try to use load_address for src
if (dst_set
&& load_address >= (CYG_ADDRESS)ram_start
&& load_address < load_address_end) {
src = load_address;
diag_printf("Decompressing from %p to %p\n",
(void*)src, (void*)dst);
}
else
{
diag_printf("usage: gunzip -s <addr> -d <addr>\n");
return;
}
}
p->out_buf = (unsigned char*)dst;
p->out_max = p->out_size = -1;
p->in_buf = (unsigned char*)src;
p->in_avail = -1;
err = (*_dc_init)(p);
if (0 == err)
err = (*_dc_inflate)(p);
// Free used resources, do final translation of error value.
err = (*_dc_close)(p, err);
if (0 != err && p->msg) {
entry_address = (CYG_ADDRESS)NO_MEMORY;
diag_printf("Decompression error: %s\n", p->msg);
} else {
load_address = entry_address = (CYG_ADDRESS)dst;
load_address_end = (CYG_ADDRESS)p->out_buf;
diag_printf("Decompressed %lu bytes\n",
load_address_end - load_address);
}
}
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