Update the libiberty sources with the latest patches found in the master sources.
2017-01-02 Richard Biener <rguenther@suse.de> PR lto/83452 * simple-object-elf.c (simple_object_elf_copy_lto_debug_section): Do not use UNDEF locals for removed symbols but instead just define them in the first prevailing section and with no name. Use the same gnu_lto_v1 name for all removed globals we promote to WEAK UNDEFs so hpux can use a stub to provide this symbol. Clear sh_info and sh_link in removed sections. 2017-10-30 Richard Biener <rguenther@suse.de> PR lto/82757 * simple-object-elf.c (simple_object_elf_copy_lto_debug_sections): Strip two leading _s from the __gnu_lto_* symbols. 2017-10-24 Alan Modra <amodra@gmail.com> PR lto/82687 PR lto/82575 * simple-object-elf.c (simple_object_elf_copy_lto_debug_sections): Only make __gnu_lto symbols hidden. 2017-10-20 Alan Modra <amodra@gmail.com> PR lto/82575 * simple-object-elf.c (simple_object_elf_copy_lto_debug_sections): Make discarded non-local symbols weak and hidden. 2017-10-18 Jakub Jelinek <jakub@redhat.com> PR lto/82598 * simple-object.c (handle_lto_debug_sections): Copy over also .note.GNU-stack section with unchanged name. * simple-object-elf.c (SHF_EXECINSTR): Define. (simple_object_elf_copy_lto_debug_section): Drop SHF_EXECINSTR bit on .note.GNU-stack section. 2017-09-25 Nathan Sidwell <nathan@acm.org> PR demangler/82195 * cp-demangle.c (d_encoding): Strip return type when name is a LOCAL_NAME. (d_local_name): Strip return type of enclosing TYPED_NAME. * testsuite/demangle-expected: Add and adjust tests. 2017-09-21 Nathan Sidwell <nathan@acm.org> PR demangler/82195 * cp-demangle.c (d_name): Revert addition of 'toplevel' parm. (has_return_type): Recurse for DEMANGLE_COMPONENT_LOCAL_NAME. (d_encoding): Revert d_name change. Use is_fnqual_component_type to strip modifiers that do not belong. (d_special_name, d_class_enum_type): Revert d_name call change. (d_expresion_1): Commonize DEMANGLE_COMPONENT_UNARY building. (d_local_name): Revert parsing of a function type. (d_print_comp_inner): An inner LOCAL_NAME might contain a TEMPLATE. * testsuite/demangle-expected: Add & adjust tests
This commit is contained in:
Nick Clifton
parent
cbda583ada
commit
2a8ae7146c
94 changed files with 327 additions and 198 deletions
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@ -1,5 +1,5 @@
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/* simple-object-elf.c -- routines to manipulate ELF object files.
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Copyright (C) 2010-2017 Free Software Foundation, Inc.
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Copyright (C) 2010-2018 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Google.
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This program is free software; you can redistribute it and/or modify it
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@ -196,6 +196,7 @@ typedef struct {
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/* Values for sh_flags field. */
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#define SHF_EXECINSTR 0x00000004 /* Executable section. */
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#define SHF_EXCLUDE 0x80000000 /* Link editor is to exclude this
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section from executable and
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shared library that it builds
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@ -235,8 +236,10 @@ typedef struct
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#define STB_LOCAL 0 /* Local symbol */
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#define STB_GLOBAL 1 /* Global symbol */
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#define STB_WEAK 2 /* Weak global */
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#define STV_DEFAULT 0 /* Visibility is specified by binding type */
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#define STV_HIDDEN 2 /* Can only be seen inside currect component */
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/* Functions to fetch and store different ELF types, depending on the
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endianness and size. */
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@ -1085,8 +1088,10 @@ simple_object_elf_copy_lto_debug_sections (simple_object_read *sobj,
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off_t shstroff;
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unsigned char *names;
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unsigned int i;
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int changed;
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int *pfnret;
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const char **pfnname;
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unsigned first_shndx = 0;
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shdr_size = (ei_class == ELFCLASS32
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? sizeof (Elf32_External_Shdr)
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@ -1154,11 +1159,13 @@ simple_object_elf_copy_lto_debug_sections (simple_object_read *sobj,
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ret = (*pfn) (&name);
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pfnret[i - 1] = ret == 1 ? 0 : -1;
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pfnname[i - 1] = name;
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if (first_shndx == 0
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&& pfnret[i - 1] == 0)
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first_shndx = i;
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}
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/* Mark sections as preserved that are required by to be preserved
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sections. */
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int changed;
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do
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{
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changed = 0;
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@ -1324,6 +1331,15 @@ simple_object_elf_copy_lto_debug_sections (simple_object_read *sobj,
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sobj->offset + stroff,
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(unsigned char *)strings,
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strsz, &errmsg, err);
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/* Find gnu_lto_ in strings. */
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char *gnu_lto = strings;
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while ((gnu_lto = memchr (gnu_lto, 'g',
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strings + strsz - gnu_lto)))
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if (strncmp (gnu_lto, "gnu_lto_v1",
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strings + strsz - gnu_lto) == 0)
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break;
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else
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gnu_lto++;
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for (ent = buf; ent < buf + length; ent += entsize)
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{
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unsigned st_shndx = ELF_FETCH_FIELD (type_functions, ei_class,
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@ -1346,9 +1362,6 @@ simple_object_elf_copy_lto_debug_sections (simple_object_read *sobj,
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and __gnu_lto_slim which otherwise cause endless
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LTO plugin invocation. */
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if (st_shndx == SHN_COMMON)
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/* Setting st_name to "" seems to work to purge
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COMMON symbols (in addition to setting their
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size to zero). */
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discard = 1;
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/* We also need to remove symbols refering to sections
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we'll eventually remove as with fat LTO objects
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@ -1364,18 +1377,36 @@ simple_object_elf_copy_lto_debug_sections (simple_object_read *sobj,
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{
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/* Make discarded symbols undefined and unnamed
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in case it is local. */
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if (ELF_ST_BIND (*st_info) == STB_LOCAL)
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_name, Elf_Word, 0);
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int bind = ELF_ST_BIND (*st_info);
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int other = STV_DEFAULT;
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if (bind == STB_LOCAL)
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{
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/* Make discarded local symbols unnamed and
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defined in the first prevailing section. */
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_name, Elf_Word, 0);
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_shndx, Elf_Half, first_shndx);
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}
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else
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{
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/* Make discarded global symbols hidden weak
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undefined and sharing the gnu_lto_ name. */
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bind = STB_WEAK;
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other = STV_HIDDEN;
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if (gnu_lto)
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_name, Elf_Word,
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gnu_lto - strings);
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_shndx, Elf_Half, SHN_UNDEF);
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}
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*st_other = other;
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*st_info = ELF_ST_INFO (bind, STT_NOTYPE);
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_value, Elf_Addr, 0);
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_size, Elf_Word, 0);
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ELF_SET_FIELD (type_functions, ei_class, Sym,
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ent, st_shndx, Elf_Half, SHN_UNDEF);
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*st_info = ELF_ST_INFO (ELF_ST_BIND (*st_info),
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STT_NOTYPE);
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*st_other = STV_DEFAULT;
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}
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}
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XDELETEVEC (strings);
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@ -1398,12 +1429,23 @@ simple_object_elf_copy_lto_debug_sections (simple_object_read *sobj,
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link. */
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ELF_SET_FIELD (type_functions, ei_class, Shdr,
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shdr, sh_type, Elf_Word, SHT_NULL);
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ELF_SET_FIELD (type_functions, ei_class, Shdr,
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shdr, sh_info, Elf_Word, 0);
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ELF_SET_FIELD (type_functions, ei_class, Shdr,
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shdr, sh_link, Elf_Word, 0);
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}
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flags = ELF_FETCH_FIELD (type_functions, ei_class, Shdr,
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shdr, sh_flags, Elf_Addr);
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if (ret == 0)
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flags &= ~SHF_EXCLUDE;
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{
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/* The debugobj doesn't contain any code, thus no trampolines.
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Even when the original object needs trampolines, debugobj
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doesn't. */
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if (strcmp (name, ".note.GNU-stack") == 0)
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flags &= ~SHF_EXECINSTR;
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flags &= ~SHF_EXCLUDE;
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}
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else if (ret == -1)
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flags = SHF_EXCLUDE;
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ELF_SET_FIELD (type_functions, ei_class, Shdr,
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