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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-08-31 04:31:08 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-08-31 04:31:20 -0700 |
| commit | b4a3a7b44c98a9f78a27bd34d0d98741a0446e23 (patch) | |
| tree | bf4dfc7e3ecaf69d1636fc4699203a5ce4e7989d /gas/configure.ac | |
| parent | 0cb8eedc9173b873db7a8990fb780d9fdeb1f41e (diff) | |
| download | binutils-gdb-b4a3a7b44c98a9f78a27bd34d0d98741a0446e23.tar.gz | |
x86: Extend assembler to generate GNU property notes
Add -mx86-used-note=[yes|no] option to generate (or not) GNU property
notes with GNU_PROPERTY_X86_FEATURE_2_USED and GNU_PROPERTY_X86_ISA_1_USED
properties. If the assembly input contains no instructions, set the
GNU_PROPERTY_X86_UINT32_VALID bit in GNU_PROPERTY_X86_FEATURE_2_USED
property. Add a --enable-x86-used-note configure time option to set the
default behavior. Set the default if the configure option is not used
to "no".
* NEWS: Mention -mx86-used-note=[no|yes].
* configure.ac: Add --enable-x86-used-note. Define
DEFAULT_X86_USED_NOTE.
* config.in: Regenerated.
* configure: Likewise.
* config/tc-i386.c (x86_isa_1_used): New.
(x86_feature_2_used): Likewise.
(x86_used_note): Likewise.
(_i386_insn): Add has_regmmx, has_regxmm, has_regymm and
has_regzmm.
(build_modrm_byte): Set i.has_regmmx, i.has_regzmm.
i.has_regymm and i.has_regxmm.
(x86_cleanup): New function.
(output_insn): Update x86_isa_1_used and x86_feature_2_used.
(OPTION_X86_USED_NOTE): New.
(md_longopts): Add -mx86-used-note=.
(md_parse_option): Handle OPTION_X86_USED_NOTE.
(md_show_usage): Display -mx86-used-note=.
* config/tc-i386.h (x86_cleanup): New prototype.
(md_cleanup): New.
* doc/c-i386.texi: Document -mx86-used-note=.
Diffstat (limited to 'gas/configure.ac')
| -rw-r--r-- | gas/configure.ac | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gas/configure.ac b/gas/configure.ac index 79714eb3dca..d8fddfb19e4 100644 --- a/gas/configure.ac +++ b/gas/configure.ac @@ -113,6 +113,19 @@ AC_ARG_ENABLE(generate_build_notes, esac])dnl +# Decide if the x86 ELF assembler should default to generating GNU x86 +# used ISA and feature properties. +ac_default_generate_x86_used_note=unset +# Provide a configuration option to override the default. +AC_ARG_ENABLE(x86-used-note, + AS_HELP_STRING([--enable-x86-used-note], + [generate GNU x86 used ISA and feature properties]), +[case "${enableval}" in + yes) ac_default_generate_x86_used_note=1 ;; + no) ac_default_generate_x86_used_note=0 ;; +esac])dnl + + using_cgen=no AM_BINUTILS_WARNINGS @@ -613,6 +626,14 @@ AC_DEFINE_UNQUOTED(DEFAULT_GENERATE_BUILD_NOTES, [Define to 1 if you want to generate GNU Build attribute notes by default, if none are contained in the input.]) +if test ${ac_default_generate_x86_used_note} = unset; then + ac_default_generate_x86_used_note=0 +fi +AC_DEFINE_UNQUOTED(DEFAULT_X86_USED_NOTE, + $ac_default_generate_x86_used_note, + [Define to 1 if you want to generate GNU x86 used ISA and feature + properties by default.]) + if test x$ac_default_compressed_debug_sections = xyes ; then AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.]) fi |