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Add support for an ARM specific 'y' section attribute flag to mark the section as NOREAD.

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bfd/ChangeLog:
      * elf32-arm.c ((elf32_arm_special_sections): Remove catch of noread
      section using '.text.noread' pattern.

gas/ChangeLog:
      * config/obj-elf.c (obj_elf_change_section) : Allow arm section with
      SHF_ARM_NOREAD section flag.
      * config/tc-arm.h (md_elf_section_letter) : Implement this hook to
      handle letter 'y'.
     (arm_elf_section_letter) : Declare it.
      * config/tc-arm.c (arm_elf_section_letter): Handle letter 'y' to set
      SHF_ARM_NOREAD section flag.
      * doc/c-arm.texi (ARM section attribute 'y'): Document it.

gas/testsuite/ChangeLog:
      * gas/arm/section-execute-only.s: New test case.
      * gas/arm/section-execute-only.d: Expected output.

ld/testsuite/ChangeLog:
      * ld-arm/thumb1-noread-not-present-mixing-two-section.s: Add 'y'
      attribute usage.
      * ld-arm/thumb1-noread-present-one-section.s: Likewise.
      * ld-arm/thumb1-noread-present-two-section.s: Likewise.
      * ld-arm/thumb1-input-section-flag-match.s: Likewise.

binutils/ChangeLog:
      * readelf.c (get_elf_section_flags): Display y letter for section
      with SHF_ARM_NOREAD section flag in readelf section output.
      (process_section_headers): Add y letter in readelf section output
      key mapping for ARM architecture.
This commit is contained in:
Mickael Guene
2016-01-20 12:53:50 +00:00
committed by Nick Clifton
parent be56871ee8
commit 91f68a68f9
18 changed files with 163 additions and 18 deletions
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16
binutils/objdump.c
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@@ -488,9 +488,23 @@ dump_section_header (bfd *abfd, asection *section,
}
PF (SEC_SMALL_DATA, "SMALL_DATA");
if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
PF (SEC_COFF_SHARED, "SHARED");
{
PF (SEC_COFF_SHARED, "SHARED");
PF (SEC_COFF_NOREAD, "NOREAD");
}
else if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
{
/* Note - sections can have both the READONLY and NOREAD attributes
set. In this case the NOREAD takes precedence, but we report both
since the user may need to know that both bits are set. */
PF (SEC_ELF_NOREAD, "NOREAD");
}
PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
PF (SEC_GROUP, "GROUP");
if (bfd_get_arch (abfd) == bfd_arch_mep)
{
PF (SEC_MEP_VLIW, "VLIW");
}
if ((section->flags & SEC_LINK_ONCE) != 0)
{