radare2/libr/anal/state.c
2015-12-01 12:39:12 +01:00

101 lines
2.9 KiB
C

/* radare - Apache 2.0 - Copyright 2013 - Adam Pridgen <dso@rice.edu || adam.pridgen@thecoverofnight.com> */
#include <r_anal.h>
#include <r_util.h>
#include <r_list.h>
#include <r_io.h>
#include "../config.h"
#ifdef IFDBG
#undef IFDBG
#endif
#define DO_THE_DBG 0
#define IFDBG if(DO_THE_DBG)
#define IFINT if(0)
R_API RAnalState * r_anal_state_new (ut64 start, ut8* buffer, ut64 len) {
RAnalState *state = R_NEW0 (RAnalState);
if (!state) return NULL;
state->start = start;
state->end = start + len;
state->buffer = buffer;
state->len = len;
state->current_op = NULL;
state->current_bb = NULL;
state->current_fcn = NULL;
state->ht = r_hashtable64_new();
state->ht_sz = 512;
state->bbs = r_list_new();
state->max_depth = 50;
state->current_depth = 0;
//r_hashtable64_rehash(state->ht, state->ht_sz);
return state;
}
R_API void r_anal_state_set_depth(RAnalState *state, ut32 depth) {
state->current_depth = depth;
}
R_API void r_anal_state_insert_bb (RAnalState* state, RAnalBlock *bb) {
if (!state || !bb)
return;
if (r_anal_state_search_bb (state, bb->addr) == NULL &&
state->current_fcn) {
RAnalBlock *tmp_bb;
IFDBG eprintf ("Inserting bb 0x%04"PFMT64x" into hash table\n", bb->addr);
r_list_append(state->current_fcn->bbs, bb);
state->bytes_consumed += state->current_bb->op_sz;
IFDBG eprintf ("[--] Consumed 0x%02x bytes, for a total of 0x%02x\n", (short )state->current_bb->op_sz, (short) state->bytes_consumed);
if (r_hashtable64_insert(state->ht, bb->addr, bb)) {
IFDBG eprintf ("Inserted bb 0x%04"PFMT64x" successfully inserted into hashtable\n", bb->addr);
}
IFDBG {
tmp_bb = r_hashtable64_lookup(state->ht, bb->addr);
IFDBG eprintf ("Inserted bb 0x%04"PFMT64x" matches one in hash table: %02x.\n", bb->addr, bb->addr == tmp_bb->addr);
}
}
}
R_API RAnalBlock * r_anal_state_search_bb (RAnalState* state, ut64 addr) {
/*
* Return 0 if no rehash is needed, otherwise return 1
*/
RAnalBlock *tmp_bb = r_hashtable64_lookup(state->ht, addr);
return tmp_bb;
}
R_API void r_anal_state_free (RAnalState * state) {
r_list_free(state->bbs);
r_hashtable64_free(state->ht);
free(state);
}
R_API ut64 r_anal_state_get_len (RAnalState *state, ut64 addr) {
ut64 result = 0;
if (r_anal_state_addr_is_valid (state, addr)) {
result = state->len - (addr - state->start);
}
return result;
}
R_API const ut8 * r_anal_state_get_buf_by_addr (RAnalState *state, ut64 addr) {
if (r_anal_state_addr_is_valid (state, addr)) {
ut64 offset = addr - state->start;
return state->buffer+offset;
}
return NULL;
}
R_API bool r_anal_state_addr_is_valid (RAnalState *state, ut64 addr) {
return (addr < state->end && addr >= state->start);
}
R_API void r_anal_state_merge_bb_list (RAnalState *state, RList* bbs) {
RListIter *iter;
RAnalBlock *bb;
r_list_foreach (bbs, iter, bb) {
IFDBG eprintf ("Inserting bb fron 0x%04"PFMT64x"\n", bb->addr);
r_anal_state_insert_bb (state, bb);
}
}