[PATCH v2] ARM: Replace catch of noread sections by section name by a section attribute letter.

[Nick Clifton]

Hi Mickael,


> bfd/ChangeLog:
> 2016-01-12 Mickael Guene <mickael.guene@st.com>
>
>      * elf32-arm.c ((elf32_arm_special_sections): Remove catch of noread
>      section using '.text.noread' pattern.
>
> gas/ChangeLog:
> 2016-01-12 Mickael Guene <mickael.guene@st.com>
>
>      * 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:
> 2016-01-12  Terry Guo  <terry.guo@arm.com>
>
>      * gas/arm/section-execute-only.s: New test case.
>      * gas/arm/section-execute-only.d: Expected output.
>
> ld/testsuite/ChangeLog:
> 2016-01-12 Mickael Guene <mickael.guene@st.com>
>
>      * 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:
> 2016-01-19 Mickael Guene <mickael.guene@st.com>
>
>      * 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.

Approved and applied.  I had to make one small fix however:  The function arm_elf_section_letter was being used in gas even when not targeting an ELF based system (eg arm-pe).  I took care of this for you.

Also you missed one small update: objdump did not recognise or display the new section attribute.  I included a fix for this in the patch that was checked in.

Cheers
   Nick