// output.cc -- manage the output file for gold
-// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
# define MAP_ANONYMOUS MAP_ANON
#endif
+#ifndef HAVE_POSIX_FALLOCATE
+// A dummy, non general, version of posix_fallocate. Here we just set
+// the file size and hope that there is enough disk space. FIXME: We
+// could allocate disk space by walking block by block and writing a
+// zero byte into each block.
+static int
+posix_fallocate(int o, off_t offset, off_t len)
+{
+ return ftruncate(o, offset + len);
+}
+#endif // !defined(HAVE_POSIX_FALLOCATE)
+
namespace gold
{
Output_section* os = this->u1_.relobj->output_section(lsi);
gold_assert(os != NULL);
Address offset = this->u1_.relobj->get_output_section_offset(lsi);
- if (offset != -1U)
+ if (offset != invalid_address)
return offset + addend;
// This is a merge section.
offset = os->output_address(this->u1_.relobj, lsi, addend);
- gold_assert(offset != -1U);
+ gold_assert(offset != invalid_address);
return offset;
}
Output_section* os = this->u2_.relobj->output_section(this->shndx_);
gold_assert(os != NULL);
Address off = this->u2_.relobj->get_output_section_offset(this->shndx_);
- if (off != -1U)
+ if (off != invalid_address)
address += os->address() + off;
else
{
address = os->output_address(this->u2_.relobj, this->shndx_,
address);
- gold_assert(address != -1U);
+ gold_assert(address != invalid_address);
}
}
else if (this->u2_.od != NULL)
if (p->output_offset(object, shndx, offset, &output_offset))
{
if (output_offset == -1)
- return -1U;
+ return -1ULL;
return addr + output_offset;
}
addr += p->data_size();
gold_unreachable();
}
-// Return the output address of the start of the merged section for
+// Find the output address of the start of the merged section for
// input section SHNDX in object OBJECT.
-uint64_t
-Output_section::starting_output_address(const Relobj* object,
- unsigned int shndx) const
+bool
+Output_section::find_starting_output_address(const Relobj* object,
+ unsigned int shndx,
+ uint64_t* paddr) const
{
uint64_t addr = this->address() + this->first_input_offset_;
for (Input_section_list::const_iterator p = this->input_sections_.begin();
// Unfortunately we don't know for sure that input offset 0 is
// mapped at all.
if (p->is_merge_section_for(object, shndx))
- return addr;
+ {
+ *paddr = addr;
+ return true;
+ }
addr += p->data_size();
}
- gold_unreachable();
+
+ // We couldn't find a merge output section for this input section.
+ return false;
}
// Set the data size of an Output_section. This is where we handle
// and the PT_TLS segment -- we do this grouping only for the
// PT_LOAD segment.
if (this->type_ != elfcpp::PT_TLS
- && (os->flags() & elfcpp::SHF_TLS) != 0
- && !this->output_data_.empty())
+ && (os->flags() & elfcpp::SHF_TLS) != 0)
{
pdl = &this->output_data_;
bool nobits = os->type() == elfcpp::SHT_NOBITS;
// segment is a relro section, then the segment must be aligned
// to at least the common page size. This ensures that the
// PT_GNU_RELRO segment will start at a page boundary.
- if (parameters->options().relro() && this->is_first_section_relro())
+ if (this->type_ == elfcpp::PT_LOAD
+ && parameters->options().relro()
+ && this->is_first_section_relro())
{
addralign = parameters->target().common_pagesize();
if (addralign > this->max_align_)
}
else
{
- // Write out one byte to make the file the right size.
- if (::lseek(o, this->file_size_ - 1, SEEK_SET) < 0)
- gold_fatal(_("%s: lseek: %s"), this->name_, strerror(errno));
- char b = 0;
- if (::write(o, &b, 1) != 1)
- gold_fatal(_("%s: write: %s"), this->name_, strerror(errno));
+ // Ensure that we have disk space available for the file. If we
+ // don't do this, it is possible that we will call munmap,
+ // close, and exit with dirty buffers still in the cache with no
+ // assigned disk blocks. If the disk is out of space at that
+ // point, the output file will wind up incomplete, but we will
+ // have already exited. The alternative to fallocate would be
+ // to use fdatasync, but that would be a more significant
+ // performance hit.
+ if (::posix_fallocate(o, 0, this->file_size_) < 0)
+ gold_fatal(_("%s: %s"), this->name_, strerror(errno));
// Map the file into memory.
this->map_is_anonymous_ = false;
bool have_sections_script);
#endif
+#ifdef HAVE_TARGET_32_LITTLE
+template
+class Output_reloc<elfcpp::SHT_REL, false, 32, false>;
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+class Output_reloc<elfcpp::SHT_REL, false, 32, true>;
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+class Output_reloc<elfcpp::SHT_REL, false, 64, false>;
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+class Output_reloc<elfcpp::SHT_REL, false, 64, true>;
+#endif
+
+#ifdef HAVE_TARGET_32_LITTLE
+template
+class Output_reloc<elfcpp::SHT_REL, true, 32, false>;
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+class Output_reloc<elfcpp::SHT_REL, true, 32, true>;
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+class Output_reloc<elfcpp::SHT_REL, true, 64, false>;
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+class Output_reloc<elfcpp::SHT_REL, true, 64, true>;
+#endif
+
+#ifdef HAVE_TARGET_32_LITTLE
+template
+class Output_reloc<elfcpp::SHT_RELA, false, 32, false>;
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+class Output_reloc<elfcpp::SHT_RELA, false, 32, true>;
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+class Output_reloc<elfcpp::SHT_RELA, false, 64, false>;
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+class Output_reloc<elfcpp::SHT_RELA, false, 64, true>;
+#endif
+
+#ifdef HAVE_TARGET_32_LITTLE
+template
+class Output_reloc<elfcpp::SHT_RELA, true, 32, false>;
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+class Output_reloc<elfcpp::SHT_RELA, true, 32, true>;
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+class Output_reloc<elfcpp::SHT_RELA, true, 64, false>;
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+class Output_reloc<elfcpp::SHT_RELA, true, 64, true>;
+#endif
+
#ifdef HAVE_TARGET_32_LITTLE
template
class Output_data_reloc<elfcpp::SHT_REL, false, 32, false>;
projects / deliverable / binutils-gdb.git / blobdiff