Implementing a new format

To enable virtual addressing

In info add et->has_va = 1; and ptr->srwx with the R_BIN_SCN_MAP; attribute

Create a folder with file format name in libr/bin/format

Makefile:

  1. NAME=bin_nes
  2. R2_PLUGIN_PATH=$(shell r2 -H R2_USER_PLUGINS)
  3. LIBEXT=$(shell r2 -H LIBEXT)
  4. CFLAGS=-g -fPIC $(shell pkg-config --cflags r_bin)
  5. LDFLAGS=-shared $(shell pkg-config --libs r_bin)
  6. OBJS=$(NAME).o
  7. LIB=$(NAME).$(LIBEXT)
  9. all: $(LIB)
  11. clean:
  12.     rm -f $(LIB) $(OBJS)
  14. $(LIB): $(OBJS)
  15.     $(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $(LIB)
  17. install:
  18.     cp -f $(NAME).$(SO_EXT) $(R2_PLUGIN_PATH)
  20. uninstall:
  21.     rm -f $(R2_PLUGIN_PATH)/$(NAME).$(SO_EXT)

bin_nes.c:

  1. #include <r_util.h>
  2. #include <r_bin.h>
  4. static bool load_buffer(RBinFile *bf, void **bin_obj, RBuffer *b, ut64 loadaddr, Sdb *sdb) {
  5.     ut64 size;
  6.     const ut8 *buf = r_buf_data (b, &size);
  7.     r_return_val_if_fail (buf, false);
  8.     *bin_obj = r_bin_internal_nes_load (buf, size);
  9.     return *bin_obj != NULL;
  10. }
  12. static void destroy(RBinFile *bf) {
  13.     r_bin_free_all_nes_obj (bf->o->bin_obj);
  14.     bf->o->bin_obj = NULL;
  15. }
  17. static bool check_buffer(RBuffer *b) {
  18.     if (!buf || length < 4) return false;
  19.     return (!memcmp (buf, "\x4E\x45\x53\x1A", 4));
  20. }
  22. static RBinInfo* info(RBinFile *arch) {
  23.     RBinInfo \*ret = R_NEW0 (RBinInfo);
  24.     if (!ret) return NULL;
  26.     if (!arch || !arch->buf) {
  27.         free (ret);
  28.         return NULL;
  29.     }
  30.     ret->file = strdup (arch->file);
  31.     ret->type = strdup ("ROM");
  32.     ret->machine = strdup ("Nintendo NES");
  33.     ret->os = strdup ("nes");
  34.     ret->arch = strdup ("6502");
  35.     ret->bits = 8;
  37.     return ret;
  38. }
  40. struct r_bin_plugin_t r_bin_plugin_nes = {
  41.     .name = "nes",
  42.     .desc = "NES",
  43.     .license = "BSD",
  44.     .get_sdb = NULL,
  45.     .load_buffer = &load_buffer,
  46.     .destroy = &destroy,
  47.     .check_buffer = &check_buffer,
  48.     .baddr = NULL,
  49.     .entries = NULL,
  50.     .sections = NULL,
  51.     .info = &info,
  52. };
  54. #ifndef R2_PLUGIN_INCORE
  55. R_API RLibStruct radare_plugin = {
  56.     .type = R_LIB_TYPE_BIN,
  57.     .data = &r_bin_plugin_nes,
  58.     .version = R2_VERSION
  59. };
  60. #endif

Some Examples