parent
5491f5f490
commit
6766a3d6b6
97
binutils-speed-up-objdump.patch
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97
binutils-speed-up-objdump.patch
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--- binutils.orig/binutils/objdump.c 2018-03-05 17:04:19.901619738 +0000
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+++ binutils-2.29/binutils/objdump.c 2018-03-05 17:10:08.334643096 +0000
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@@ -664,9 +664,7 @@ slurp_dynamic_symtab (bfd *abfd)
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static bfd_boolean
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is_significant_symbol_name (const char * name)
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{
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- return strcmp (name, ".plt") == 0
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- || strcmp (name, ".got") == 0
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- || strcmp (name, ".plt.got") == 0;
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+ return strncmp (name, ".plt", 4) == 0 || strcmp (name, ".got") == 0;
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}
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/* Filter out (in place) symbols that are useless for disassembly.
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@@ -937,6 +935,7 @@ find_symbol_for_address (bfd_vma vma,
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asection *sec;
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unsigned int opb;
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bfd_boolean want_section;
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+ long rel_count;
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if (sorted_symcount < 1)
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return NULL;
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@@ -1065,33 +1064,59 @@ find_symbol_for_address (bfd_vma vma,
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and we have dynamic relocations available, then we can produce
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a better result by matching a relocation to the address and
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using the symbol associated with that relocation. */
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+ rel_count = aux->dynrelcount;
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if (!want_section
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- && aux->dynrelbuf != NULL
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&& sorted_syms[thisplace]->value != vma
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+ && rel_count > 0
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+ && aux->dynrelbuf != NULL
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+ && aux->dynrelbuf[0]->address <= vma
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+ && aux->dynrelbuf[rel_count - 1]->address >= vma
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/* If we have matched a synthetic symbol, then stick with that. */
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&& (sorted_syms[thisplace]->flags & BSF_SYNTHETIC) == 0)
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{
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- long rel_count;
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- arelent ** rel_pp;
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+ arelent ** rel_low;
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+ arelent ** rel_high;
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- for (rel_count = aux->dynrelcount, rel_pp = aux->dynrelbuf;
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- rel_count--;)
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+ rel_low = aux->dynrelbuf;
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+ rel_high = rel_low + rel_count - 1;
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+ while (rel_low <= rel_high)
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{
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- arelent * rel = rel_pp[rel_count];
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+ arelent ** rel_mid = &rel_low[(rel_high - rel_low) / 2];
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+ arelent * rel = *rel_mid;
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- if (rel->address == vma
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- && rel->sym_ptr_ptr != NULL
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- /* Absolute relocations do not provide a more helpful symbolic address. */
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- && ! bfd_is_abs_section ((* rel->sym_ptr_ptr)->section))
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+ if (rel->address == vma)
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{
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- if (place != NULL)
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- * place = thisplace;
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- return * rel->sym_ptr_ptr;
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+ /* Absolute relocations do not provide a more helpful
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+ symbolic address. Find a non-absolute relocation
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+ with the same address. */
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+
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+ arelent **rel_vma = rel_mid;
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+
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+ for (rel_mid--;
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+ rel_mid >= rel_low && rel_mid[0]->address == vma;
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+ rel_mid--)
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+ rel_vma = rel_mid;
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+
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+ for (; rel_vma <= rel_high && rel_vma[0]->address == vma;
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+ rel_vma++)
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+ {
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+ rel = *rel_vma;
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+ if (rel->sym_ptr_ptr != NULL
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+ && ! bfd_is_abs_section ((* rel->sym_ptr_ptr)->section))
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+ {
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+ if (place != NULL)
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+ * place = thisplace;
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+ return * rel->sym_ptr_ptr;
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+ }
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+ }
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+ break;
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}
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- /* We are scanning backwards, so if we go below the target address
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- we have failed. */
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- if (rel_pp[rel_count]->address < vma)
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+ if (vma < rel->address)
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+ rel_high = rel_mid;
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+ else if (vma >= rel_mid[1]->address)
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+ rel_low = rel_mid + 1;
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+ else
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break;
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}
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}
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@ -62,7 +62,7 @@
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Summary: A GNU collection of binary utilities
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Name: %{?cross}binutils%{?_with_debug:-debug}
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Version: 2.30
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Release: 6%{?dist}
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Release: 7%{?dist}
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License: GPLv3+
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Group: Development/Tools
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URL: https://sourceware.org/binutils
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@ -163,6 +163,11 @@ Patch12: binutils-page-to-segment-assignment.patch
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# Lifetime: Fixed in 2.30.1 and/or 2.31
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Patch13: binutils-2.30-allow_R_AARCH64-symbols.patch
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# Purpose: Improves objdump's function for locating a symbol to match a
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# given address, so that it uses a binary chop algorithm.
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# Lifetime: Fixed in 2.31.
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Patch14: binutils-speed-up-objdump.patch
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#----------------------------------------------------------------------------
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Provides: bundled(libiberty)
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@ -301,6 +306,7 @@ using libelf instead of BFD.
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%patch11 -p1
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%patch12 -p1
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%patch13 -p1
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%patch14 -p1
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# We cannot run autotools as there is an exact requirement of autoconf-2.59.
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@ -709,6 +715,9 @@ exit 0
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#----------------------------------------------------------------------------
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%changelog
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* Mon Mar 05 2018 Nick Clifton <nickc@redhat.com> 2.30-7
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- Speed up objdump. (#1551540)
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* Thu Feb 22 2018 Patrick Uiterwijk <patrick@puiterwijk.org> - 2.30-6
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- Fix R_AARCH64 symbols (PR 22764) (#1547781)
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