diff options
Diffstat (limited to 'meta/recipes-devtools/binutils/binutils/0023-gold-Get-alignment-of-uncompressed-section-from-ch_a.patch')
| -rw-r--r-- | meta/recipes-devtools/binutils/binutils/0023-gold-Get-alignment-of-uncompressed-section-from-ch_a.patch | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/meta/recipes-devtools/binutils/binutils/0023-gold-Get-alignment-of-uncompressed-section-from-ch_a.patch b/meta/recipes-devtools/binutils/binutils/0023-gold-Get-alignment-of-uncompressed-section-from-ch_a.patch new file mode 100644 index 0000000000..1f072a6057 --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/0023-gold-Get-alignment-of-uncompressed-section-from-ch_a.patch @@ -0,0 +1,200 @@ +From 0261ec511ac07177fa488133e0bb3c03860977b3 Mon Sep 17 00:00:00 2001 +From: "H.J. Lu" <hjl.tools@gmail.com> +Date: Sun, 2 Dec 2018 05:42:36 -0800 +Subject: [PATCH 2/2] gold: Get alignment of uncompressed section from + ch_addralign + +The ELF compression header has a field (ch_addralign) that is set to +the alignment of the uncompressed section. This way the section itself +can have a different alignment than the decompressed section. Update +decompress_input_section to get alignment of the decompressed section +and use it when merging decompressed strings. + + PR binutils/23919 + * merge.cc (Output_merge_string<Char_type>::do_add_input_section): + Get addralign from decompressed_section_contents. + * object.cc (build_compressed_section_map): Set info.addralign. + (Object::decompressed_section_contents): Add a palign + argument and store p->second.addralign in *palign if it isn't + NULL. + * object.h (Compressed_section_info): Add addralign. + (section_is_compressed): Add a palign argument, default it + to NULL, store p->second.addralign in *palign if it isn't NULL. + (Object::decompressed_section_contents): Likewise. + * output.cc (Output_section::add_input_section): Get addralign + from section_is_compressed. +--- + gold/merge.cc | 8 +++++--- + gold/object.cc | 11 +++++++++-- + gold/object.h | 8 ++++++-- + gold/output.cc | 11 ++++++----- + 4 files changed, 26 insertions(+), 12 deletions(-) + +Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5f6c22aee74f17393b82934a5682d985672e011a] +Signed-off-by: Khem Raj <raj.khem@gmail.com> + + +diff --git a/gold/merge.cc b/gold/merge.cc +index de00ee9ae9..d7de11789f 100644 +--- a/gold/merge.cc ++++ b/gold/merge.cc +@@ -440,9 +440,11 @@ Output_merge_string<Char_type>::do_add_input_section(Relobj* object, + { + section_size_type sec_len; + bool is_new; ++ uint64_t addralign = this->addralign(); + const unsigned char* pdata = object->decompressed_section_contents(shndx, + &sec_len, +- &is_new); ++ &is_new, ++ &addralign); + + const Char_type* p = reinterpret_cast<const Char_type*>(pdata); + const Char_type* pend = p + sec_len / sizeof(Char_type); +@@ -494,7 +496,7 @@ Output_merge_string<Char_type>::do_add_input_section(Relobj* object, + // aligned, so each string within the section must retain the same + // modulo. + uintptr_t init_align_modulo = (reinterpret_cast<uintptr_t>(pdata) +- & (this->addralign() - 1)); ++ & (addralign - 1)); + bool has_misaligned_strings = false; + + while (p < pend) +@@ -503,7 +505,7 @@ Output_merge_string<Char_type>::do_add_input_section(Relobj* object, + + // Within merge input section each string must be aligned. + if (len != 0 +- && ((reinterpret_cast<uintptr_t>(p) & (this->addralign() - 1)) ++ && ((reinterpret_cast<uintptr_t>(p) & (addralign - 1)) + != init_align_modulo)) + has_misaligned_strings = true; + +diff --git a/gold/object.cc b/gold/object.cc +index 374340fa16..711793e5e4 100644 +--- a/gold/object.cc ++++ b/gold/object.cc +@@ -751,11 +751,13 @@ build_compressed_section_map( + const unsigned char* contents = + obj->section_contents(i, &len, false); + uint64_t uncompressed_size; ++ Compressed_section_info info; + if (is_zcompressed) + { + // Skip over the ".zdebug" prefix. + name += 7; + uncompressed_size = get_uncompressed_size(contents, len); ++ info.addralign = shdr.get_sh_addralign(); + } + else + { +@@ -763,8 +765,8 @@ build_compressed_section_map( + name += 6; + elfcpp::Chdr<size, big_endian> chdr(contents); + uncompressed_size = chdr.get_ch_size(); ++ info.addralign = chdr.get_ch_addralign(); + } +- Compressed_section_info info; + info.size = convert_to_section_size_type(uncompressed_size); + info.flag = shdr.get_sh_flags(); + info.contents = NULL; +@@ -3060,7 +3062,8 @@ const unsigned char* + Object::decompressed_section_contents( + unsigned int shndx, + section_size_type* plen, +- bool* is_new) ++ bool* is_new, ++ uint64_t* palign) + { + section_size_type buffer_size; + const unsigned char* buffer = this->do_section_contents(shndx, &buffer_size, +@@ -3087,6 +3090,8 @@ Object::decompressed_section_contents( + { + *plen = uncompressed_size; + *is_new = false; ++ if (palign != NULL) ++ *palign = p->second.addralign; + return p->second.contents; + } + +@@ -3108,6 +3113,8 @@ Object::decompressed_section_contents( + // once in this pass. + *plen = uncompressed_size; + *is_new = true; ++ if (palign != NULL) ++ *palign = p->second.addralign; + return uncompressed_data; + } + +diff --git a/gold/object.h b/gold/object.h +index 0b786a5471..b99548463d 100644 +--- a/gold/object.h ++++ b/gold/object.h +@@ -373,6 +373,7 @@ struct Compressed_section_info + { + section_size_type size; + elfcpp::Elf_Xword flag; ++ uint64_t addralign; + const unsigned char* contents; + }; + typedef std::map<unsigned int, Compressed_section_info> Compressed_section_map; +@@ -808,7 +809,8 @@ class Object + + bool + section_is_compressed(unsigned int shndx, +- section_size_type* uncompressed_size) const ++ section_size_type* uncompressed_size, ++ elfcpp::Elf_Xword* palign = NULL) const + { + if (this->compressed_sections_ == NULL) + return false; +@@ -818,6 +820,8 @@ class Object + { + if (uncompressed_size != NULL) + *uncompressed_size = p->second.size; ++ if (palign != NULL) ++ *palign = p->second.addralign; + return true; + } + return false; +@@ -828,7 +832,7 @@ class Object + // by the caller. + const unsigned char* + decompressed_section_contents(unsigned int shndx, section_size_type* plen, +- bool* is_cached); ++ bool* is_cached, uint64_t* palign = NULL); + + // Discard any buffers of decompressed sections. This is done + // at the end of the Add_symbols task. +diff --git a/gold/output.cc b/gold/output.cc +index 1701db1c99..75ac3bcf97 100644 +--- a/gold/output.cc ++++ b/gold/output.cc +@@ -2448,7 +2448,13 @@ Output_section::add_input_section(Layout* layout, + unsigned int reloc_shndx, + bool have_sections_script) + { ++ section_size_type input_section_size = shdr.get_sh_size(); ++ section_size_type uncompressed_size; + elfcpp::Elf_Xword addralign = shdr.get_sh_addralign(); ++ if (object->section_is_compressed(shndx, &uncompressed_size, ++ &addralign)) ++ input_section_size = uncompressed_size; ++ + if ((addralign & (addralign - 1)) != 0) + { + object->error(_("invalid alignment %lu for section \"%s\""), +@@ -2498,11 +2504,6 @@ Output_section::add_input_section(Layout* layout, + } + } + +- section_size_type input_section_size = shdr.get_sh_size(); +- section_size_type uncompressed_size; +- if (object->section_is_compressed(shndx, &uncompressed_size)) +- input_section_size = uncompressed_size; +- + off_t offset_in_section; + + if (this->has_fixed_layout()) +-- +2.20.1 + |