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| author | H.J. Lu <hjl.tools@gmail.com> | 2012-11-16 16:03:40 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2012-11-16 16:03:40 -0800 |
| commit | a09875396ef20fe972d4cd2e0685b3e369f5818f (patch) | |
| tree | e7cf7c07eedceb872ad679d86704d8d3394a41c6 | |
| parent | 75852dbff5c314674c132b15b6db0206738046a8 (diff) | |
| download | binutils-hjl/global.tar.gz | |
Implement linker -z global optionhjl/global
| -rw-r--r-- | ld/ChangeLog.global | 7 | ||||
| -rw-r--r-- | ld/emultempl/elf32.em | 5 | ||||
| -rw-r--r-- | ld/ld.texinfo | 6 | ||||
| -rw-r--r-- | ld/testsuite/ChangeLog.global | 3 | ||||
| -rw-r--r-- | ld/testsuite/ld-elf/global1.d | 8 |
5 files changed, 29 insertions, 0 deletions
diff --git a/ld/ChangeLog.global b/ld/ChangeLog.global new file mode 100644 index 000000000..4f054f49c --- /dev/null +++ b/ld/ChangeLog.global @@ -0,0 +1,7 @@ +2012-11-16 H.J. Lu <hongjiu.lu@intel.com> + + * ld.texinfo: Document "-z global". + + * emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Support + "-z global". + (gld${EMULATION_NAME}_list_options): Likewise. diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em index 9e263a9e9..acb01e5df 100644 --- a/ld/emultempl/elf32.em +++ b/ld/emultempl/elf32.em @@ -2300,6 +2300,8 @@ fragment <<EOF EOF if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then fragment <<EOF + else if (strcmp (optarg, "global") == 0) + link_info.flags_1 |= (bfd_vma) DF_1_GLOBAL; else if (strcmp (optarg, "initfirst") == 0) link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST; else if (strcmp (optarg, "interpose") == 0) @@ -2419,6 +2421,9 @@ EOF if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then fragment <<EOF fprintf (file, _("\ + -z global Make symbols in DSO available for subsequently\n\ + loaded objects\n")); + fprintf (file, _("\ -z initfirst Mark DSO to be initialized first at runtime\n")); fprintf (file, _("\ -z interpose Mark object to interpose all DSOs but executable\n")); diff --git a/ld/ld.texinfo b/ld/ld.texinfo index 4a8118ff8..0e14343e4 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -1024,6 +1024,12 @@ shared libraries are still allowed. @item execstack Marks the object as requiring executable stack. +@item global +This option is only meaningful when building a shared object. It makes +the symbols defined by this shared object available for symbol resolution +of subsequently loaded libraries. It is supported by the GNU C library +since version 2.17. + @item initfirst This option is only meaningful when building a shared object. It marks the object so that its runtime initialization will occur diff --git a/ld/testsuite/ChangeLog.global b/ld/testsuite/ChangeLog.global new file mode 100644 index 000000000..41bc1ad97 --- /dev/null +++ b/ld/testsuite/ChangeLog.global @@ -0,0 +1,3 @@ +2012-11-16 H.J. Lu <hongjiu.lu@intel.com> + + * ld-elf/global1.d: New file. diff --git a/ld/testsuite/ld-elf/global1.d b/ld/testsuite/ld-elf/global1.d new file mode 100644 index 000000000..eae7f0d90 --- /dev/null +++ b/ld/testsuite/ld-elf/global1.d @@ -0,0 +1,8 @@ +#source: start.s +#ld: -shared -z global +#readelf: -d +#target: *-*-linux* *-*-gnu* + +#... + 0x0*6ffffffb \(FLAGS_1\) *Flags: GLOBAL +#pass |