Changeset a131536d in mainline for uspace/lib/c/arch/sparc64/src/rtld/reloc.c

Timestamp:

2019-01-20T00:55:57Z (6 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

eefdd7c

Parents:

b71ec66

Message:

Assert we don't exceed supported number of slots

File:

• uspace/lib/c/arch/sparc64/src/rtld/reloc.c (modified) (3 diffs)

uspace/lib/c/arch/sparc64/src/rtld/reloc.c

@@ -90 +90 @@
         elf_symbol_t *sym_def;
         module_t *dest;
+        uint32_t *plt;
 
         DPRINTF("parse relocation table\n");
@@ -96 +97 @@
         rt_entries = rt_size / sizeof(elf_rela_t);
         str_tab = m->dyn.str_tab;
+
+        plt = (uint32_t *)m->dyn.plt_got;
 
         DPRINTF("rel table address: 0x%zx, entries: %zd\n", (uintptr_t)rt, rt_entries);
@@ -218 +221 @@
                          * r_ptr points to the PLT entry, sym_addr contains
                          * address of the symbol.
+                         *
+                         * XXX This only works for the first 32768 entries.
+                         * If there are more, the layout is more complex.
                          */
+                        assert((uint32_t *)r_ptr - plt < 32768 * 8);
                         fill_plt_entry_generic((uint32_t *)r_ptr, sym_addr);
                         smc_coherence(r_ptr, 32);