diff options
| -rw-r--r-- | bfd/ChangeLog | 7 | ||||
| -rw-r--r-- | bfd/elflink.c | 29 | ||||
| -rw-r--r-- | ld/testsuite/ChangeLog | 8 | ||||
| -rw-r--r-- | ld/testsuite/ld-gc/gc.exp | 1 | ||||
| -rw-r--r-- | ld/testsuite/ld-gc/start.d | 8 | ||||
| -rw-r--r-- | ld/testsuite/ld-gc/start.s | 6 |
6 files changed, 59 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 01950b4..0f2e0e4 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,12 @@ 2010-01-07 H.J. Lu <hongjiu.lu@intel.com> + PR ld/11133 + * elflink.c (_bfd_elf_gc_mark_hook): Check section XXX for + undefined __start_XXX/__stop_XXX in all input files and set + SEC_KEEP. + +2010-01-07 H.J. Lu <hongjiu.lu@intel.com> + PR ld/11143 * elflink.c (elf_gc_sweep): Keep SHT_NOTE section. diff --git a/bfd/elflink.c b/bfd/elflink.c index 284bff1..f9f804d 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -11331,6 +11331,8 @@ _bfd_elf_gc_mark_hook (asection *sec, struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) { + const char *sec_name; + if (h != NULL) { switch (h->root.type) @@ -11342,6 +11344,33 @@ _bfd_elf_gc_mark_hook (asection *sec, case bfd_link_hash_common: return h->root.u.c.p->section; + case bfd_link_hash_undefined: + case bfd_link_hash_undefweak: + /* To work around a glibc bug, keep all XXX input sections + when there is an as yet undefined reference to __start_XXX + or __stop_XXX symbols. The linker will later define such + symbols for orphan input sections that have a name + representable as a C identifier. */ + if (strncmp (h->root.root.string, "__start_", 8) == 0) + sec_name = h->root.root.string + 8; + else if (strncmp (h->root.root.string, "__stop_", 7) == 0) + sec_name = h->root.root.string + 7; + else + sec_name = NULL; + + if (sec_name && *sec_name != '\0') + { + bfd *i; + + for (i = info->input_bfds; i; i = i->link_next) + { + sec = bfd_get_section_by_name (i, sec_name); + if (sec) + sec->flags |= SEC_KEEP; + } + } + break; + default: break; } diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog index 3320c13..220a6d9 100644 --- a/ld/testsuite/ChangeLog +++ b/ld/testsuite/ChangeLog @@ -1,5 +1,13 @@ 2010-01-07 H.J. Lu <hongjiu.lu@intel.com> + PR ld/11133 + * ld-gc/gc.exp: Run start. + + * ld-gc/start.d: New. + * ld-gc/start.s: Likewise. + +2010-01-07 H.J. Lu <hongjiu.lu@intel.com> + PR ld/11143 * ld-gc/gc.exp: Run abi-note. diff --git a/ld/testsuite/ld-gc/gc.exp b/ld/testsuite/ld-gc/gc.exp index 36df233..c271a3d 100644 --- a/ld/testsuite/ld-gc/gc.exp +++ b/ld/testsuite/ld-gc/gc.exp @@ -91,3 +91,4 @@ test_gc "Check --gc-section/-r/-u" "gcrel" $ld "-r --gc-sections -u used_func" run_dump_test "noent" run_dump_test "abi-note" +run_dump_test "start" diff --git a/ld/testsuite/ld-gc/start.d b/ld/testsuite/ld-gc/start.d new file mode 100644 index 0000000..a6f748f --- /dev/null +++ b/ld/testsuite/ld-gc/start.d @@ -0,0 +1,8 @@ +#name: --gc-sections with __start_ +#ld: --gc-sections -e _start +#nm: -n +#target: *-*-linux* + +#... +[0-9a-f]+ A +__start__foo +#... diff --git a/ld/testsuite/ld-gc/start.s b/ld/testsuite/ld-gc/start.s new file mode 100644 index 0000000..d9f1b2d --- /dev/null +++ b/ld/testsuite/ld-gc/start.s @@ -0,0 +1,6 @@ +.globl _start +_start: + .long __start__foo + .section _foo,"aw",%progbits +foo: + .long 1 |