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-rw-r--r--gold/arm.cc82
1 files changed, 54 insertions, 28 deletions
diff --git a/gold/arm.cc b/gold/arm.cc
index 3ffb0c1..bec70db 100644
--- a/gold/arm.cc
+++ b/gold/arm.cc
@@ -1580,6 +1580,11 @@ class Arm_relobj : public Sized_relobj<32, big_endian>
const Relobj::Output_sections&,
const Symbol_table *, const unsigned char*);
+ // Whether a section is a scannable text section.
+ bool
+ section_is_scannable(const elfcpp::Shdr<32, big_endian>&, unsigned int,
+ const Output_section*, const Symbol_table *);
+
// Whether a section needs to be scanned for the Cortex-A8 erratum.
bool
section_needs_cortex_a8_stub_scanning(const elfcpp::Shdr<32, big_endian>&,
@@ -5447,6 +5452,44 @@ Arm_output_section<big_endian>::fix_exidx_coverage(
// Arm_relobj methods.
+// Determine if an input section is scannable for stub processing. SHDR is
+// the header of the section and SHNDX is the section index. OS is the output
+// section for the input section and SYMTAB is the global symbol table used to
+// look up ICF information.
+
+template<bool big_endian>
+bool
+Arm_relobj<big_endian>::section_is_scannable(
+ const elfcpp::Shdr<32, big_endian>& shdr,
+ unsigned int shndx,
+ const Output_section* os,
+ const Symbol_table *symtab)
+{
+ // Skip any empty sections, unallocated sections or sections whose
+ // type are not SHT_PROGBITS.
+ if (shdr.get_sh_size() == 0
+ || (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0
+ || shdr.get_sh_type() != elfcpp::SHT_PROGBITS)
+ return false;
+
+ // Skip any discarded or ICF'ed sections.
+ if (os == NULL || symtab->is_section_folded(this, shndx))
+ return false;
+
+ // If this requires special offset handling, check to see if it is
+ // a relaxed section. If this is not, then it is a merged section that
+ // we cannot handle.
+ if (this->is_output_section_offset_invalid(shndx))
+ {
+ const Output_relaxed_input_section* poris =
+ os->find_relaxed_input_section(this, shndx);
+ if (poris == NULL)
+ return false;
+ }
+
+ return true;
+}
+
// Determine if we want to scan the SHNDX-th section for relocation stubs.
// This is a helper for Arm_relobj::scan_sections_for_stubs() below.
@@ -5467,26 +5510,6 @@ Arm_relobj<big_endian>::section_needs_reloc_stub_scanning(
if (sh_size == 0)
return false;
- // Ignore reloc section with bad info. This error will be
- // reported in the final link.
- unsigned int index = this->adjust_shndx(shdr.get_sh_info());
- if (index >= this->shnum())
- return false;
-
- // This relocation section is against a section which we
- // discarded or if the section is folded into another
- // section due to ICF.
- if (out_sections[index] == NULL || symtab->is_section_folded(this, index))
- return false;
-
- // Check the section to which relocations are applied. Ignore relocations
- // to unallocated sections or EXIDX sections.
- const unsigned int shdr_size = elfcpp::Elf_sizes<32>::shdr_size;
- const elfcpp::Shdr<32, big_endian> data_shdr(pshdrs + index * shdr_size);
- if ((data_shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0
- || data_shdr.get_sh_type() == elfcpp::SHT_ARM_EXIDX)
- return false;
-
// Ignore reloc section with unexpected symbol table. The
// error will be reported in the final link.
if (this->adjust_shndx(shdr.get_sh_link()) != this->symtab_shndx())
@@ -5503,7 +5526,16 @@ Arm_relobj<big_endian>::section_needs_reloc_stub_scanning(
if (reloc_size != shdr.get_sh_entsize() || sh_size % reloc_size != 0)
return false;
- return true;
+ // Ignore reloc section with bad info. This error will be
+ // reported in the final link.
+ unsigned int index = this->adjust_shndx(shdr.get_sh_info());
+ if (index >= this->shnum())
+ return false;
+
+ const unsigned int shdr_size = elfcpp::Elf_sizes<32>::shdr_size;
+ const elfcpp::Shdr<32, big_endian> text_shdr(pshdrs + index * shdr_size);
+ return this->section_is_scannable(text_shdr, index,
+ out_sections[index], symtab);
}
// Determine if we want to scan the SHNDX-th section for non-relocation stubs.
@@ -5517,15 +5549,9 @@ Arm_relobj<big_endian>::section_needs_cortex_a8_stub_scanning(
Output_section* os,
const Symbol_table* symtab)
{
- // We only scan non-empty code sections.
- if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) == 0
- || shdr.get_sh_size() == 0)
+ if (!this->section_is_scannable(shdr, shndx, os, symtab))
return false;
- // Ignore discarded or ICF'ed sections.
- if (os == NULL || symtab->is_section_folded(this, shndx))
- return false;
-
// Find output address of section.
Arm_address address = os->output_address(this, shndx, 0);