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Diffstat (limited to 'patches/binutils/2.15.91.0.2/binutils-20040817-linkonce.patch')
| -rw-r--r-- | patches/binutils/2.15.91.0.2/binutils-20040817-linkonce.patch | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/patches/binutils/2.15.91.0.2/binutils-20040817-linkonce.patch b/patches/binutils/2.15.91.0.2/binutils-20040817-linkonce.patch new file mode 100644 index 0000000..97fa6ee --- /dev/null +++ b/patches/binutils/2.15.91.0.2/binutils-20040817-linkonce.patch @@ -0,0 +1,118 @@ +From http://sources.redhat.com/ml/binutils/2004-08/msg00190.html + +Date: Tue, 17 Aug 2004 12:04:29 +0200 +From: Jakub Jelinek <jakub at redhat dot com> +To: binutils at sources dot redhat dot com +Subject: [PATCH] Fix `defined in discarded section' errors when building ia64 gcc +Message-ID: <20040817100429.GL30497@sunsite.ms.mff.cuni.cz> +Reply-To: Jakub Jelinek <jakub at redhat dot com> +References: <20040817090201.GK30497@sunsite.ms.mff.cuni.cz> +In-Reply-To: <20040817090201 dot GK30497 at sunsite dot ms dot mff dot cuni dot cz> + +On Tue, Aug 17, 2004 at 11:02:01AM +0200, Jakub Jelinek wrote: +> Current gcc 3.4.x (at least gcc-3_4-rhl-branch) doesn't build with CVS +> binutils (nor 2.15.91.0.2). +> The problem is that libstdc++.so linking fails with: +> `.gnu.linkonce.t._ZNSdD2Ev' referenced in section `.gnu.linkonce.ia64unw._ZNSdD2Ev' of .libs/sstream-inst.o: defined in discarded section `.gnu.linkonce.t._ZNSdD2Ev' of .libs/sstream-inst.o +> The problem is that both io-inst.s and sstream-inst.s have +> .gnu.linkonce.t._ZNSdD2Ev definition, but because io-inst.cc +> also instantiates some templates sstream-inst.cc doesn't instantiate, +> the inliner can do a better job in io-inst.cc. +> The result is that _ZNSdD2Ev in io-inst.cc is a leaf routine, while +> it is not in sstream-inst.cc (in assembly, +> _ZNSdD2Ev in io-inst.s starts with .prologue and no .save directives, +> while _ZNSdD2Ev] in sstream-inst.s has .prologue 12, 35 and some +> .save directives. +> IA-64 ABI allows leaf routines to have no unwind section at all, +> which means .gnu.linkonce.ia64unw._ZNSdD2Ev is not created in +> io-inst.o at all and as .gnu.linkonce.t._ZNSdD2Ev comes first +> and wins, .gnu.linkonce.ia64unw._ZNSdD2Ev in sstream.o suddenly +> references a discarded section. +> +> Not sure what should be done here, but certainly the compiler +> isn't at fault here, it is a binutils problem. +> One fix could be to create empty .gnu.linkonce.ia64unw.* section +> in assembler, another special case ia64 unwind sections in the linker. + +Here is a patch for the first possibility. +It certainly makes libstdc++.so to link and even the unwind info looks +good on brief skimming. + +2004-08-17 Jakub Jelinek <jakub@redhat.com> + + * config/tc-ia64.c (start_unwind_section): Add linkonce_empty + argument, don't do anything if current section is not + .gnu.linkonce.t.* and linkonce_empty is set. + (generate_unwind_image, dot_endp): Adjust callers, call + start_unwind_section (*, 1) if nothing will be put into the + section. + +--- binutils/gas/config/tc-ia64.c.jj 2004-07-30 11:42:24.000000000 +0200 ++++ binutils/gas/config/tc-ia64.c 2004-08-17 13:45:04.288173205 +0200 +@@ -1,5 +1,6 @@ + /* tc-ia64.c -- Assembler for the HP/Intel IA-64 architecture. +- Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. ++ Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 ++ Free Software Foundation, Inc. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com> + + This file is part of GAS, the GNU Assembler. +@@ -3297,7 +3298,7 @@ static char *special_linkonce_name[] = + }; + + static void +-start_unwind_section (const segT text_seg, int sec_index) ++start_unwind_section (const segT text_seg, int sec_index, int linkonce_empty) + { + /* + Use a slightly ugly scheme to derive the unwind section names from +@@ -3359,6 +3360,8 @@ start_unwind_section (const segT text_se + prefix = special_linkonce_name [sec_index - SPECIAL_SECTION_UNWIND]; + suffix += sizeof (".gnu.linkonce.t.") - 1; + } ++ else if (linkonce_empty) ++ return; + + prefix_len = strlen (prefix); + suffix_len = strlen (suffix); +@@ -3444,7 +3447,7 @@ generate_unwind_image (const segT text_s + expressionS exp; + bfd_reloc_code_real_type reloc; + +- start_unwind_section (text_seg, SPECIAL_SECTION_UNWIND_INFO); ++ start_unwind_section (text_seg, SPECIAL_SECTION_UNWIND_INFO, 0); + + /* Make sure the section has 4 byte alignment for ILP32 and + 8 byte alignment for LP64. */ +@@ -3485,6 +3488,8 @@ generate_unwind_image (const segT text_s + unwind.personality_routine = 0; + } + } ++ else ++ start_unwind_section (text_seg, SPECIAL_SECTION_UNWIND_INFO, 1); + + free_saved_prologue_counts (); + unwind.list = unwind.tail = unwind.current_entry = NULL; +@@ -4164,7 +4169,7 @@ dot_endp (dummy) + subseg_set (md.last_text_seg, 0); + unwind.proc_end = expr_build_dot (); + +- start_unwind_section (saved_seg, SPECIAL_SECTION_UNWIND); ++ start_unwind_section (saved_seg, SPECIAL_SECTION_UNWIND, 0); + + /* Make sure that section has 4 byte alignment for ILP32 and + 8 byte alignment for LP64. */ +@@ -4204,6 +4209,9 @@ dot_endp (dummy) + bytes_per_address); + + } ++ else ++ start_unwind_section (saved_seg, SPECIAL_SECTION_UNWIND, 1); ++ + subseg_set (saved_seg, saved_subseg); + + /* Parse names of main and alternate entry points and set symbol sizes. */ + + + Jakub + |