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49 lines
1.9 KiB
Diff
49 lines
1.9 KiB
Diff
From 4d0fe8f40364c170226f1ef3bc98975630463e87 Mon Sep 17 00:00:00 2001
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From: Mike Hommey <mh+mozilla@glandium.org>
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Date: Tue, 19 Jan 2016 14:31:04 +0900
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Subject: [PATCH] Bug 1233963 - Work around recent GNU gold behavior with
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segments starting before the first section they contain
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---
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build/unix/elfhack/elf.cpp | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/build/unix/elfhack/elf.cpp b/build/unix/elfhack/elf.cpp
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index 666b535..743afde 100644
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--- a/build/unix/elfhack/elf.cpp
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+++ b/build/unix/elfhack/elf.cpp
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@@ -253,26 +253,29 @@ Elf::Elf(std::ifstream &file)
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}
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if (phdr.p_type == PT_PHDR)
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segment->addSection(phdr_section);
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for (int j = 1; j < ehdr->e_shnum; j++)
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if (phdr.contains(sections[j]))
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segment->addSection(sections[j]);
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// Make sure that our view of segments corresponds to the original
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// ELF file.
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- assert(segment->getFileSize() == phdr.p_filesz);
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+ // GNU gold likes to start some segments before the first section
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+ // they contain. https://sourceware.org/bugzilla/show_bug.cgi?id=19392
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+ unsigned int gold_adjustment = segment->getAddr() - phdr.p_vaddr;
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+ assert(segment->getFileSize() == phdr.p_filesz - gold_adjustment);
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// gold makes TLS segments end on an aligned virtual address, even
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// when the underlying section ends before that, while bfd ld
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// doesn't. It's fine if we don't keep that alignment.
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unsigned int memsize = segment->getMemSize();
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if (phdr.p_type == PT_TLS && memsize != phdr.p_memsz) {
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unsigned int align = segment->getAlign();
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memsize = (memsize + align - 1) & ~(align - 1);
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}
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- assert(memsize == phdr.p_memsz);
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+ assert(memsize == phdr.p_memsz - gold_adjustment);
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segments.push_back(segment);
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}
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new (&eh_entry) ElfLocation(ehdr->e_entry, this);
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}
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Elf::~Elf()
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{
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--
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2.7.0
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