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118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/* radare - LGPL - Copyright 2011 -- pancake<nopcode.org> */
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/* this file contains a test implementation of the ~O(1) function search */
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// TODO: REFACTOR: This must be a generic data structure named RListRange
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// TODO: We need a standard struct named Surface1D {.addr, .size}, so we can
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// simplify all this by just passing the offset of the field of the given ptr
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// TODO: RListComparator does not supports *user
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#define RANGEBITS 10
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// 1024
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#define RANGE (1<<RANGEBITS)
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#include <r_anal.h>
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static int cmpfun(void *a, void *b) {
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RAnalFcn *fa = (RAnalFcn*)a;
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RAnalFcn *fb = (RAnalFcn*)b;
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// TODO: swap sort order here or wtf?
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return (fb->addr - fa->addr);
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}
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R_API RListRange* r_listrange_new () {
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RListRange *s = R_NEW (RListRange);
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s->h = r_hashtable64_new ();
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s->l = r_list_new ();
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return s;
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}
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static inline ut64 r_listrange_key(ut64 addr) {
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const ut64 KXOR = 0x18abc3e127d549ac; // XXX wrong for mingw32
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ut64 key = addr & 0xfffffffffffff400;
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key ^= KXOR;
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//eprintf ("%llx = %llx\n", addr, key);
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return key;
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//return (addr >> RANGEBITS);
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}
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static inline ut64 r_listrange_next(ut64 addr) {
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return (addr + RANGE);
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}
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R_API void r_listrange_free(RListRange *s) {
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r_hashtable64_free (s->h);
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r_list_destroy (s->l);
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free (s);
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}
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R_API void r_listrange_add(RListRange *s, RAnalFcn *f) {
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ut64 addr;
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RList *list;
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ut64 from = f->addr;
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ut64 to = f->addr + f->size;
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for (addr = from; addr<to; addr = r_listrange_next (addr)) {
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ut64 key = r_listrange_key (addr);
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list = r_hashtable64_lookup (s->h, key);
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if (list) {
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if (!r_list_contains (list, f))
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//r_list_add_sorted (list, f, cmpfun);
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r_list_append (list, f);
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} else {
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list = r_list_new ();
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//r_list_add_sorted (list, f, cmpfun);
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r_list_append (list, f);
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r_hashtable64_insert (s->h, key, list);
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}
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}
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r_list_add_sorted (s->l, f, cmpfun);
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}
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R_API void r_listrange_del(RListRange *s, RAnalFcn *f) {
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RList *list;
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ut64 addr, from, to;
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if (!f) return;
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from = f->addr;
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to = f->addr + f->size;
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for (addr = from; addr<to; addr = r_listrange_next (addr)) {
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list = r_hashtable64_lookup (s->h, r_listrange_key (addr));
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if (list) r_list_delete_data (list, f);
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}
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r_list_delete_data (s->l, f);
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}
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R_API void r_listrange_resize(RListRange *s, RAnalFcn *f, int newsize) {
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r_listrange_del (s, f);
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f->size = newsize;
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r_listrange_add (s, f);
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}
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R_API RAnalFcn *r_listrange_find_in_range(RListRange* s, ut64 addr) {
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RAnalFcn *f;
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RListIter *iter;
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RList *list = r_hashtable64_lookup (s->h, r_listrange_key (addr));
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if (list)
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r_list_foreach (list, iter, f) {
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if (R_BETWEEN (f->addr, addr, f->addr+f->size))
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return f;
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}
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return NULL;
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}
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R_API RAnalFcn *r_listrange_find_root(RListRange* s, ut64 addr) {
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RAnalFcn *f;
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RListIter *iter;
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RList *list = r_hashtable64_lookup (s->h, r_listrange_key (addr));
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if (list)
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r_list_foreach (list, iter, f) {
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if (addr == f->addr)
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return f;
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}
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return NULL;
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}
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#if 0
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main() {
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RHashTable64 *h = r_listrange_new();
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r_listrange_add (h, f1);
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}
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#endif
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