diff options
Diffstat (limited to 'lib/ccdbg-rom.c')
| -rw-r--r-- | lib/ccdbg-rom.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/lib/ccdbg-rom.c b/lib/ccdbg-rom.c new file mode 100644 index 00000000..71bed220 --- /dev/null +++ b/lib/ccdbg-rom.c @@ -0,0 +1,63 @@ +/* + * Copyright © 2008 Keith Packard <keithp@keithp.com> + * + * 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 2 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, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include "ccdbg.h" + +uint8_t +ccdbg_set_rom(struct ccdbg *dbg, struct hex_image *rom) +{ + if (dbg->rom) + ccdbg_hex_image_free(dbg->rom); + dbg->rom = rom; + return 0; +} + +uint8_t +ccdbg_rom_contains(struct ccdbg *dbg, uint16_t addr, int nbytes) +{ + struct hex_image *rom = dbg->rom; + if (!rom) + return 0; + if (addr < rom->address || rom->address + rom->length < addr + nbytes) + return 0; + return 1; +} + +uint8_t +ccdbg_rom_replace_xmem(struct ccdbg *dbg, + uint16_t addr, uint8_t *bytes, int nbytes) +{ + struct hex_image *rom = dbg->rom; + if (!rom) + return 0; + + if (rom->address < addr + nbytes && addr < rom->address + rom->length) { + int start, stop; + + start = addr; + if (addr < rom->address) + start = rom->address; + stop = addr + nbytes; + if (rom->address + rom->length < stop) + stop = rom->address + rom->length; + memcpy(bytes + start - addr, rom->data + start - rom->address, + stop - start); + return 1; + } + return 0; +} |