* lib/ld-lib.exp (check_gc_sections_available): New proc, based on the version in gcc/testsuite/lib/target-supports.exp.
* ld-elf/eld.exp: Use check_gc_sections_available.
+2007-11-16 Tristan Gingold <gingold@adacore.com>
+
+ * elflink.c (elf_link_output_extsym): Weaken assertion: if
+ --gc-section is set, there may be no TLS segment.
+
2007-11-19 Alan Modra <amodra@bigpond.net.au>
* elf-bfd.h (bfd_elf_perform_complex_relocation): Update prototype.
sym.st_value += input_sec->output_section->vma;
if (h->type == STT_TLS)
{
- /* STT_TLS symbols are relative to PT_TLS segment
- base. */
- BFD_ASSERT (elf_hash_table (finfo->info)->tls_sec != NULL);
- sym.st_value -= elf_hash_table (finfo->info)->tls_sec->vma;
+ asection *tls_sec = elf_hash_table (finfo->info)->tls_sec;
+ if (tls_sec != NULL)
+ sym.st_value -= tls_sec->vma;
+ else
+ {
+ /* The TLS section may have been garbage collected. */
+ BFD_ASSERT (finfo->info->gc_sections
+ && !input_sec->gc_mark);
+ }
}
}
}
+2007-11-20 Nick Clifton <nickc@redhat.com>
+
+ * lib/ld-lib.exp (check_gc_sections_available): New proc, based
+ on the version in gcc/testsuite/lib/target-supports.exp.
+ * ld-elf/elf.exp: Use check_gc_sections_available.
+
+2007-11-20 Tristan Gingold <gingold@adacore.com>
+
+ * ld-elf/tls_gc.s: New test.
+ * ld-elf/elf.exp: Add tls_gc test.
+
2007-11-17 Thiemo Seufer <ths@mips.com>
* ld-mips-elf/attr-gnu-4-14.d, ld-mips-elf/attr-gnu-4-41.d:
}
}
+if { [check_gc_sections_available] } {
+ run_ld_link_tests {
+ {"--gc-sections on tls variable"
+ "--gc-section" "" {tls_gc.s} {} "tls_gc"}
+ }
+}
+
# The following tests require running the executable generated by ld.
if ![isnative] {
return
}
}
}
+
+# Returns true if --gc-sections is supported on the target.
+
+proc check_gc_sections_available { } {
+ global gc_sections_available_saved
+ global ld
+
+ if {![info exists gc_sections_available_saved]} {
+ # Some targets don't support gc-sections despite whatever's
+ # advertised by ld's options.
+ if { [istarget alpha*-*-*]
+ || [istarget ia64-*-*] } {
+ set gc_sections_available_saved 0
+ return 0
+ }
+
+ # elf2flt uses -q (--emit-relocs), which is incompatible with
+ # --gc-sections.
+ if { [board_info target exists ldflags]
+ && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
+ set gc_sections_available_saved 0
+ return 0
+ }
+
+ # VxWorks kernel modules are relocatable objects linked with -r,
+ # while RTP executables are linked with -q (--emit-relocs).
+ # Both of these options are incompatible with --gc-sections.
+ if { [istarget *-*-vxworks*] } {
+ set gc_sections_available_saved 0
+ return 0
+ }
+
+ # Check if the ld used by gcc supports --gc-sections.
+ set ld_output [remote_exec host $ld "--help"]
+ if { [ string first "--gc-sections" $ld_output ] >= 0 } {
+ set gc_sections_available_saved 1
+ } else {
+ set gc_sections_available_saved 0
+ }
+ }
+ return $gc_sections_available_saved
+}