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commit 643f7afb0d7f63dcff873d3cbfd7ed3eaf94197f
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Author: Andreas Krebbel <krebbel@linux.vnet.ibm.com>
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Date: Mon Apr 27 10:32:23 2015 +0200
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S/390: z13 use GNU attribute to indicate vector ABI
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bfd/
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* elf-s390-common.c (elf_s390_merge_obj_attributes): New function.
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* elf32-s390.c (elf32_s390_merge_private_bfd_data): Call
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elf_s390_merge_obj_attributes.
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* elf64-s390.c (elf64_s390_merge_private_bfd_data): New function.
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binutils/
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* readelf.c (display_s390_gnu_attribute): New function.
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(process_s390_specific): New function.
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(process_arch_specific): Call process_s390_specific.
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gas/
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* doc/as.texinfo: Document Tag_GNU_S390_ABI_Vector.
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include/elf/
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* s390.h: Define Tag_GNU_S390_ABI_Vector.
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### a/bfd/ChangeLog
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### b/bfd/ChangeLog
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## -1,3 +1,10 @@
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+2015-04-27 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
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+
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+ * elf-s390-common.c (elf_s390_merge_obj_attributes): New function.
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+ * elf32-s390.c (elf32_s390_merge_private_bfd_data): Call
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+ elf_s390_merge_obj_attributes.
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+ * elf64-s390.c (elf64_s390_merge_private_bfd_data): New function.
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+
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2015-04-24 Jiong Wang <jiong.wang@arm.com>
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PR ld/18270
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Index: gdb-7.6.1/bfd/elf-s390-common.c
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===================================================================
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--- gdb-7.6.1.orig/bfd/elf-s390-common.c 2016-02-21 22:12:48.164552653 +0100
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+++ gdb-7.6.1/bfd/elf-s390-common.c 2016-02-21 22:12:55.355638653 +0100
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@@ -241,3 +241,61 @@
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return TRUE;
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}
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+
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+/* Merge object attributes from IBFD into OBFD. Raise an error if
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+ there are conflicting attributes. */
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+static bfd_boolean
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+elf_s390_merge_obj_attributes (bfd *ibfd, bfd *obfd)
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+{
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+ obj_attribute *in_attr, *in_attrs;
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+ obj_attribute *out_attr, *out_attrs;
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+
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+ if (!elf_known_obj_attributes_proc (obfd)[0].i)
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+ {
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+ /* This is the first object. Copy the attributes. */
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+ _bfd_elf_copy_obj_attributes (ibfd, obfd);
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+
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+ /* Use the Tag_null value to indicate the attributes have been
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+ initialized. */
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+ elf_known_obj_attributes_proc (obfd)[0].i = 1;
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+
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+ return TRUE;
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+ }
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+
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+ in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
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+ out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
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+
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+ /* Check for conflicting Tag_GNU_S390_ABI_Vector attributes and
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+ merge non-conflicting ones. */
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+ in_attr = &in_attrs[Tag_GNU_S390_ABI_Vector];
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+ out_attr = &out_attrs[Tag_GNU_S390_ABI_Vector];
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+
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+ if (in_attr->i > 2)
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+ _bfd_error_handler
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+ (_("Warning: %B uses unknown vector ABI %d"), ibfd,
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+ in_attr->i);
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+ else if (out_attr->i > 2)
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+ _bfd_error_handler
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+ (_("Warning: %B uses unknown vector ABI %d"), obfd,
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+ out_attr->i);
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+ else if (in_attr->i != out_attr->i)
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+ {
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+ out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
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+
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+ if (in_attr->i && out_attr->i)
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+ {
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+ const char abi_str[3][9] = { "none", "software", "hardware" };
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+
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+ _bfd_error_handler
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+ (_("Warning: %B uses vector %s ABI, %B uses %s ABI"),
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+ ibfd, obfd, abi_str[in_attr->i], abi_str[out_attr->i]);
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+ }
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+ if (in_attr->i > out_attr->i)
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+ out_attr->i = in_attr->i;
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+ }
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+
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+ /* Merge Tag_compatibility attributes and any common GNU ones. */
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+ _bfd_elf_merge_object_attributes (ibfd, obfd);
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+
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+ return TRUE;
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+}
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Index: gdb-7.6.1/bfd/elf32-s390.c
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===================================================================
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--- gdb-7.6.1.orig/bfd/elf32-s390.c 2016-02-21 22:12:48.165552665 +0100
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+++ gdb-7.6.1/bfd/elf32-s390.c 2016-02-21 22:12:55.356638665 +0100
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@@ -3938,9 +3938,18 @@
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return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
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}
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+/* Merge backend specific data from an object file to the output
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+ object file when linking. */
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+
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static bfd_boolean
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elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
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{
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+ if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
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+ return TRUE;
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+
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+ if (!elf_s390_merge_obj_attributes (ibfd, obfd))
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+ return FALSE;
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+
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elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
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return TRUE;
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}
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Index: gdb-7.6.1/bfd/elf64-s390.c
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===================================================================
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--- gdb-7.6.1.orig/bfd/elf64-s390.c 2016-02-21 22:12:48.166552677 +0100
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+++ gdb-7.6.1/bfd/elf64-s390.c 2016-02-21 22:12:55.356638665 +0100
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@@ -3722,6 +3722,21 @@
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return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
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}
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+/* Merge backend specific data from an object file to the output
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+ object file when linking. */
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+
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+static bfd_boolean
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+elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
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+{
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+ if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
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+ return TRUE;
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+
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+ if (!elf_s390_merge_obj_attributes (ibfd, obfd))
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+ return FALSE;
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+
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+ return TRUE;
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+}
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+
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/* Why was the hash table entry size definition changed from
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ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
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this is the only reason for the s390_elf64_size_info structure. */
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@@ -3780,7 +3795,8 @@
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#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
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#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
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#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
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-#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
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+#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
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+#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
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#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
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#define elf_backend_check_relocs elf_s390_check_relocs
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Index: gdb-7.6.1/include/elf/s390.h
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===================================================================
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--- gdb-7.6.1.orig/include/elf/s390.h 2016-02-21 22:12:48.166552677 +0100
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+++ gdb-7.6.1/include/elf/s390.h 2016-02-21 22:12:55.356638665 +0100
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@@ -129,6 +129,17 @@
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RELOC_NUMBER (R_390_GNU_VTENTRY, 251)
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END_RELOC_NUMBERS (R_390_max)
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-#endif /* _ELF_390_H */
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+/* Object attribute tags. */
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+enum
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+{
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+ /* 0-3 are generic. */
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+ /* 4 is reserved for the FP ABI. */
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+ /* Vector ABI:
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+ 0 = not affected by the vector ABI, or not tagged.
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+ 1 = software vector ABI being used
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+ 2 = hardware vector ABI being used. */
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+ Tag_GNU_S390_ABI_Vector = 8,
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+};
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+#endif /* _ELF_390_H */
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