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/*
Copyright 2022-2023 Gabriel Jensen.
This file is part of agbsum.
agbsum is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
agbsum 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with agbsum. If not, see <https://www.gnu.org/licenses/>.
*/
#include <agbsum.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#if CHAR_BIT != 0x8
#error "agbsum only support 8-bit byte systems"
#endif
int main (int const argc, char const* const* const argv)
{
struct agb_dat dat;
agb_inidat (&dat);
agb_chkpar (&dat, argc, argv);
dat.rom = agb_opn (dat.pth);
char unsigned buf[agb_sumoff + 0x1];
agb_red (buf, dat.rom);
{
char unsigned const sum = agb_getsum (buf);
char unsigned const romsum = buf[agb_sumoff];
if (romsum == sum || !dat.dopat) {
// Don't patch the ROM if it's already okay or we're not allowed to.
if (!dat.sil) {printf ("\"%s\": %hhX (%hhX in file)\n", dat.pth, sum, romsum);}
agb_exi (agb_cnd_oky, dat.rom);
}
agb_pat (dat.rom, sum);
if (!dat.sil) {printf ("\"%s\" @ %zX: %hhX => %hhX\n", dat.pth, agb_romsrt + agb_sumoff, romsum, sum);} // If we aren't supposed to print anything then don't.
}
agb_exi (agb_cnd_oky, dat.rom);
}
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