From 2dc8dd17cd595bd7a1b0824c83380af52e633fc1 Mon Sep 17 00:00:00 2001 From: Jim Wilson Date: Wed, 16 Jan 2019 13:14:59 -0800 Subject: RISC-V: Support ELF attribute for gas and readelf. 2019-01-16 Kito Cheng Nelson Chu bfd/ * elfnn-riscv.c (riscv_elf_obj_attrs_arg_type): New. (elf_backend_obj_attrs_vendor): Define. (elf_backend_obj_attrs_section_type): Likewise. (elf_backend_obj_attrs_section): Likewise. (elf_backend_obj_attrs_arg_type): Define as riscv_elf_obj_attrs_arg_type. * elfxx-riscv.c (riscv_estimate_digit): New. (riscv_estimate_arch_strlen1): Likewise. (riscv_estimate_arch_strlen): Likewise. (riscv_arch_str1): Likewise. (riscv_arch_str): Likewise. * elfxx-riscv.h (riscv_arch_str): Declare. binutils/ * readelf.c (get_riscv_section_type_name): New function. (get_section_type_name): Add handler for RISC-V. (riscv_attr_tag_t): Declare. (riscv_attr_tag): New. (display_riscv_attribute): New function. (process_attributes): Add handler for RISC-V. * testsuite/binutils-all/strip-3.d: Remove .riscv.attribute section. gas/ * config/tc-riscv.c (DEFAULT_RISCV_ATTR): Define to 0 if not defined. (riscv_set_options): Add `arch_attr` field. (riscv_opts): Set default value for arch_attr. (riscv_write_out_arch_attr): New. (riscv_set_public_attributes): Likewise. (riscv_md_end): Likewise. (riscv_convert_symbolic_attribute): Likewise. (s_riscv_attribute): Likewise. (explicit_arch_attr): Likewise. (riscv_pseudo_table): Add .attribute to the table. (options): Add OPTION_ARCH_ATTR and OPTION_NO_ARCH_ATTR enumeration constants. (md_longopts): Add `march-attr' and `mno-arch-attr' options. (md_parse_option): Handle the new options. (md_show_usage): Document the `march-attr' option. * config/tc-riscv.h (md_end): Define as riscv_md_end (riscv_md_end): Declare. (CONVERT_SYMBOLIC_ATTRIBUTE): Define as riscv_convert_symbolic_attribute. (riscv_convert_symbolic_attribute): Declare. (start_assemble): Declare. * testsuite/gas/elf/elf.exp: Adjust test case for section2.e. * testsuite/gas/elf/section2.e-riscv: New. * testsuite/gas/riscv/attribute-01.d: New test * testsuite/gas/riscv/attribute-02.d: Likewise. * testsuite/gas/riscv/attribute-03.d: Likewise. * testsuite/gas/riscv/attribute-04.d: Likewise. * testsuite/gas/riscv/attribute-04.s: Likewise. * testsuite/gas/riscv/attribute-05.d: Likewise. * testsuite/gas/riscv/attribute-05.s: Likewise. * testsuite/gas/riscv/attribute-06.d: Likewise. * testsuite/gas/riscv/attribute-06.s: Likewise. * testsuite/gas/riscv/attribute-07.d: Likewise. * testsuite/gas/riscv/attribute-07.s: Likewise. * testsuite/gas/riscv/attribute-08.d: Likewise. * testsuite/gas/riscv/attribute-08.s: Likewise. * testsuite/gas/riscv/attribute-unknown.d: Likewise. * testsuite/gas/riscv/attribute-unknown.s: Likewise. * testsuite/gas/riscv/empty.l: Likewise. * doc/c-riscv.texi (.attribute): Add documentation. * configure.ac (--enable-default-riscv-attribute): New options. * configure: Re-generate. * config.in: Re-generate. include/ * elf/riscv.h (SHT_RISCV_ATTRIBUTES): Define. (Tag_RISCV_arch): Likewise. (Tag_RISCV_priv_spec): Likewise. (Tag_RISCV_priv_spec_minor): Likewise. (Tag_RISCV_priv_spec_revision): Likewise. (Tag_RISCV_unaligned_access): Likewise. (Tag_RISCV_stack_align): Likewise. --- gas/configure.ac | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'gas/configure.ac') diff --git a/gas/configure.ac b/gas/configure.ac index 2fe9f78..105d708 100644 --- a/gas/configure.ac +++ b/gas/configure.ac @@ -125,6 +125,16 @@ AC_ARG_ENABLE(x86-used-note, no) ac_default_generate_x86_used_note=0 ;; esac])dnl +# Decide if the RISC-V ELF assembler should default to generating attribute. +ac_default_generate_riscv_attr=unset +# Provide a configuration option to override the default. +AC_ARG_ENABLE(default-riscv-attribute, + AS_HELP_STRING([--enable-default-riscv-attribute], + [generate RISC-V arch attribute by default]), +[case "${enableval}" in + yes) ac_default_generate_riscv_attr=1 ;; + no) ac_default_generate_riscv_attr=0 ;; +esac])dnl using_cgen=no @@ -663,6 +673,21 @@ AC_DEFINE_UNQUOTED(DEFAULT_X86_USED_NOTE, [Define to 1 if you want to generate GNU x86 used ISA and feature properties by default.]) +if test ${ac_default_generate_riscv_attr} = unset; then + case ${target_os} in + elf) + ac_default_generate_riscv_attr=1 + ;; + *) + ac_default_generate_riscv_attr=0 + ;; + esac +fi + +AC_DEFINE_UNQUOTED(DEFAULT_RISCV_ATTR, + $ac_default_generate_riscv_attr, + [Define to 1 if you want to generate RISC-V arch attribute by default.]) + if test x$ac_default_compressed_debug_sections = xyes ; then AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.]) fi -- cgit v1.1