diff options
| author | Vivek Das Mohapatra <vivek@collabora.com> | 2020-12-14 17:25:51 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-12-15 18:44:56 +1030 |
| commit | 6a0a0dd0cc43765d8e5e277aeaaf169a863f2315 (patch) | |
| tree | 776cc1a93737ca13d34c6f6c0c906134c7ddd46f | |
| parent | ee0688c2339deba4bca7d57a96001183aa06a765 (diff) | |
| download | gdb-6a0a0dd0cc43765d8e5e277aeaaf169a863f2315.zip gdb-6a0a0dd0cc43765d8e5e277aeaaf169a863f2315.tar.gz gdb-6a0a0dd0cc43765d8e5e277aeaaf169a863f2315.tar.bz2 | |
Handle -z unique/-z nounique in ld
Add (or suppress) a DT_GNU_FLAGS_1 dynamic section
with a bit flag value of DF_GNU_1_UNIQUE.
bfd/
* elflink.c (bfd_elf_size_dynamic_sections): Call
_bfd_elf_add_dynamic_entry to add a DT_GNU_FLAGS_1 section.
include/
* bfdlink.h (struct bfd_link_info): New field gnu_flags_1.
ld/
* emultempl/elf.em (gld${EMULATION_NAME}_handle_option):
Parse -z unique / -z nounique options.
| -rw-r--r-- | bfd/ChangeLog | 5 | ||||
| -rw-r--r-- | bfd/elflink.c | 5 | ||||
| -rw-r--r-- | include/ChangeLog | 1 | ||||
| -rw-r--r-- | include/bfdlink.h | 3 | ||||
| -rw-r--r-- | ld/ChangeLog | 5 | ||||
| -rw-r--r-- | ld/emultempl/elf.em | 4 |
6 files changed, 22 insertions, 1 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index e3a5c8a..11b901a 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,8 @@ +2020-12-15 Vivek Das Mohapatra <vivek@collabora.com> + + * elflink.c (bfd_elf_size_dynamic_sections): Call + _bfd_elf_add_dynamic_entry to add a DT_GNU_FLAGS_1 section. + 2020-12-14 Alan Modra <amodra@gmail.com> * elf-bfd.h (struct elf_obj_tdata): Add being_created. diff --git a/bfd/elflink.c b/bfd/elflink.c index 29b46f1..37af3ef 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -7178,7 +7178,10 @@ bfd_elf_size_dynamic_sections (bfd *output_bfd, || !_bfd_elf_add_dynamic_entry (info, DT_SYMTAB, 0) || !_bfd_elf_add_dynamic_entry (info, DT_STRSZ, strsize) || !_bfd_elf_add_dynamic_entry (info, DT_SYMENT, - bed->s->sizeof_sym)) + bed->s->sizeof_sym) + || (info->gnu_flags_1 + && !_bfd_elf_add_dynamic_entry (info, DT_GNU_FLAGS_1, + info->gnu_flags_1))) return FALSE; } } diff --git a/include/ChangeLog b/include/ChangeLog index f19742e..a8316ee 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,6 +1,7 @@ 2020-12-15 Vivek Das Mohapatra <vivek@collabora.com> * elf/common.h (DT_GNU_FLAGS_1, DF_GNU_1_UNIQUE): Define. + * bfdlink.h (struct bfd_link_info): New field gnu_flags_1. 2020-12-11 Cary Coutant <ccoutant@gmail.com> diff --git a/include/bfdlink.h b/include/bfdlink.h index b92ef54..3019033 100644 --- a/include/bfdlink.h +++ b/include/bfdlink.h @@ -655,6 +655,9 @@ struct bfd_link_info /* May be used to set DT_FLAGS_1 for ELF. */ bfd_vma flags_1; + /* May be used to set DT_GNU_FLAGS_1 for ELF. */ + bfd_vma gnu_flags_1; + /* May be used to set ELF visibility for __start_* / __stop_. */ unsigned int start_stop_visibility; diff --git a/ld/ChangeLog b/ld/ChangeLog index b649e68..3db7fc6 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,8 @@ +2020-12-15 Vivek Das Mohapatra <vivek@collabora.com> + + * emultempl/elf.em (gld${EMULATION_NAME}_handle_option): + Parse -z unique / -z nounique options. + 2020-12-14 Howard Chu <hyc@symas.com> * libdep_plugin.c: New file: Processes archives that contain a diff --git a/ld/emultempl/elf.em b/ld/emultempl/elf.em index cfdf60e..aa40c78 100644 --- a/ld/emultempl/elf.em +++ b/ld/emultempl/elf.em @@ -809,6 +809,10 @@ fragment <<EOF link_info.flags |= (bfd_vma) DF_ORIGIN; link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN; } + else if (strcmp (optarg, "unique") == 0) + link_info.gnu_flags_1 |= (bfd_vma) DF_GNU_1_UNIQUE; + else if (strcmp (optarg, "nounique") == 0) + link_info.gnu_flags_1 &= ~(bfd_vma) DF_GNU_1_UNIQUE; else if (strcmp (optarg, "combreloc") == 0) link_info.combreloc = TRUE; else if (strcmp (optarg, "nocombreloc") == 0) |