u64 addr;
u64 len;
struct list_head node;
+ struct phdr_data *remaps;
};
struct sym_data {
return 0;
}
+static void kcore_copy__find_remaps(struct kcore_copy_info *kci)
+{
+ struct phdr_data *p, *k = NULL;
+ u64 kend;
+
+ if (!kci->stext)
+ return;
+
+ /* Find phdr that corresponds to the kernel map (contains stext) */
+ kcore_copy__for_each_phdr(kci, p) {
+ u64 pend = p->addr + p->len - 1;
+
+ if (p->addr <= kci->stext && pend >= kci->stext) {
+ k = p;
+ break;
+ }
+ }
+
+ if (!k)
+ return;
+
+ kend = k->offset + k->len;
+
+ /* Find phdrs that remap the kernel */
+ kcore_copy__for_each_phdr(kci, p) {
+ u64 pend = p->offset + p->len;
+
+ if (p == k)
+ continue;
+
+ if (p->offset >= k->offset && pend <= kend)
+ p->remaps = k;
+ }
+}
+
static void kcore_copy__layout(struct kcore_copy_info *kci)
{
struct phdr_data *p;
off_t rel = 0;
+ kcore_copy__find_remaps(kci);
+
kcore_copy__for_each_phdr(kci, p) {
- p->rel = rel;
- rel += p->len;
+ if (!p->remaps) {
+ p->rel = rel;
+ rel += p->len;
+ }
kci->phnum += 1;
}
+
+ kcore_copy__for_each_phdr(kci, p) {
+ struct phdr_data *k = p->remaps;
+
+ if (k)
+ p->rel = p->offset - k->offset + k->rel;
+ }
}
static int kcore_copy__calc_maps(struct kcore_copy_info *kci, const char *dir,
kcore_copy__for_each_phdr(&kci, p) {
off_t offs = p->rel + offset;
+ if (p->remaps)
+ continue;
if (copy_bytes(kcore.fd, p->offset, extract.fd, offs, p->len))
goto out_extract_close;
}