Changeset 6adb775f in mainline for uspace/lib/c/generic/elf/elf_mod.c

Timestamp:

2016-04-25T16:46:31Z (9 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

32573ff

Parents:

dc0d8b52

Message:

TLS for dynamically linked executables and initially loaded DSOs (but must not call dlopen or there will be trouble).

File:

• uspace/lib/c/generic/elf/elf_mod.c (modified) (2 diffs)

uspace/lib/c/generic/elf/elf_mod.c

@@ -248 +248 @@
 }
 
+/** Process TLS program header.
+ *
+ * @param elf  Pointer to loader state buffer.
+ * @param hdr  TLS program header
+ * @param info Place to store TLS info
+ */
+static void tls_program_header(elf_ld_t *elf, elf_segment_header_t *hdr,
+    elf_tls_info_t *info)
+{
+        info->tdata = (void *)((uint8_t *)hdr->p_vaddr + elf->bias);
+        info->tdata_size = hdr->p_filesz;
+        info->tbss_size = hdr->p_memsz - hdr->p_filesz;
+}
+
 /** Process segment header.
  *
+ * @param elf   Pointer to loader state buffer.
  * @param entry Segment header.
  *
@@ -277 +292 @@
         case 0x70000000:
                 /* FIXME: MIPS reginfo */
+                break;
+        case PT_TLS:
+                /* Parse TLS program header */
+                tls_program_header(elf, entry, &elf->info->tls);
+                DPRINTF("TLS header found at %p\n",
+                    (void *)((uint8_t *)entry->p_vaddr + elf->bias));
                 break;
         case PT_SHLIB: