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116 lines
4.1 KiB
116 lines
4.1 KiB
6 years ago
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commit e8910a83af41c3dbfd00191b2720d4094f8d9532
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Author: Alan Modra <amodra@gmail.com>
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Date: Tue Oct 29 16:34:35 2013 +1030
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Replace DT_PPC_TLSOPT with DT_PPC_OPT.
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This removes the DT_PPC_TLSOPT/DT_PPC64_TLSOPT dynamic tag and replaces
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it with DT_PPC_OPT/DT_PPC64_OPT tag to provide the same functionality
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and more. This isn't backwards compatible, but the TLSOPT tag hasn't
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been used since the tls optimisation support was never submitted to
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glibc.
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/include/elf/
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* ppc.h (DT_PPC_TLSOPT): Delete.
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(DT_PPC_OPT, PPC_OPT_TLS): Define.
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* ppc64.h (DT_PPC64_TLSOPT): Delete.
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(DT_PPC64_OPT, PPC64_OPT_TLS, PPC64_OPT_MULTI_TOC): Define.
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bfd/
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* elf32-ppc.c (ppc_elf_size_dynamic_sections): Use new DT_PPC_OPT
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tag to specify tls optimisation.
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* elf64-ppc.c (ppc64_elf_size_dynamic_sections): Likewise.
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(ppc64_elf_finish_dynamic_sections): Specify whether multiple
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toc pointers are used via DT_PPC64_OPT.
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binutils/
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* readelf.c (get_ppc_dynamic_type): Replace PPC_TLSOPT with PPC_OPT.
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(get_ppc64_dynamic_type): Replace PPC64_TLSOPT with PPC64_OPT.
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Index: gdb-7.6.1/bfd/elf32-ppc.c
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===================================================================
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--- gdb-7.6.1.orig/bfd/elf32-ppc.c
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+++ gdb-7.6.1/bfd/elf32-ppc.c
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@@ -6443,7 +6443,7 @@ ppc_elf_size_dynamic_sections (bfd *outp
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if (!htab->no_tls_get_addr_opt
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&& htab->tls_get_addr != NULL
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&& htab->tls_get_addr->plt.plist != NULL
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- && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
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+ && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
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return FALSE;
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}
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Index: gdb-7.6.1/bfd/elf64-ppc.c
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===================================================================
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--- gdb-7.6.1.orig/bfd/elf64-ppc.c
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+++ gdb-7.6.1/bfd/elf64-ppc.c
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@@ -9580,6 +9580,8 @@ ppc64_elf_size_dynamic_sections (bfd *ou
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if (htab->elf.dynamic_sections_created)
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{
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+ bfd_boolean tls_opt;
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+
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/* Add some entries to the .dynamic section. We fill in the
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values later, in ppc64_elf_finish_dynamic_sections, but we
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must add the entries now so that we get the correct size for
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@@ -9611,11 +9613,14 @@ ppc64_elf_size_dynamic_sections (bfd *ou
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return FALSE;
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}
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- if (!htab->no_tls_get_addr_opt
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- && htab->tls_get_addr_fd != NULL
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- && htab->tls_get_addr_fd->elf.plt.plist != NULL
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- && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
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- return FALSE;
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+ tls_opt = (!htab->no_tls_get_addr_opt
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+ && htab->tls_get_addr_fd != NULL
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+ && htab->tls_get_addr_fd->elf.plt.plist != NULL);
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+ if (tls_opt || !htab->opd_abi)
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+ {
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+ if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
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+ return FALSE;
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+ }
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if (relocs)
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{
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@@ -14394,6 +14399,11 @@ ppc64_elf_finish_dynamic_sections (bfd *
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dyn.d_un.d_ptr = s->vma;
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break;
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+ case DT_PPC64_OPT:
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+ if (htab->do_multi_toc && htab->multi_toc_needed)
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+ dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
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+ break;
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+
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case DT_PPC64_OPDSZ:
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s = bfd_get_section_by_name (output_bfd, ".opd");
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if (s == NULL)
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Index: gdb-7.6.1/include/elf/ppc.h
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===================================================================
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--- gdb-7.6.1.orig/include/elf/ppc.h
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+++ gdb-7.6.1/include/elf/ppc.h
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@@ -176,7 +176,8 @@ END_RELOC_NUMBERS (R_PPC_max)
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#define DT_PPC_GOT (DT_LOPROC)
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/* Specify that tls descriptors should be optimized. */
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-#define DT_PPC_TLSOPT (DT_LOPROC + 1)
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+#define DT_PPC_OPT (DT_LOPROC + 1)
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+#define PPC_OPT_TLS 1
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/* Processor specific flags for the ELF header e_flags field. */
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Index: gdb-7.6.1/include/elf/ppc64.h
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===================================================================
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--- gdb-7.6.1.orig/include/elf/ppc64.h
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+++ gdb-7.6.1/include/elf/ppc64.h
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@@ -225,7 +225,9 @@ ppc64_encode_local_entry(unsigned int va
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#define DT_PPC64_OPD (DT_LOPROC + 1)
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#define DT_PPC64_OPDSZ (DT_LOPROC + 2)
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-/* Specify that tls descriptors should be optimized. */
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-#define DT_PPC64_TLSOPT (DT_LOPROC + 3)
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+/* Specify whether various optimisations are possible. */
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+#define DT_PPC64_OPT (DT_LOPROC + 3)
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+#define PPC64_OPT_TLS 1
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+#define PPC64_OPT_MULTI_TOC 2
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#endif /* _ELF_PPC64_H */
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