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=.
This commit is contained in:
H.J. Lu
parent
0cb8eedc91
commit
b4a3a7b44c
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@ -1,3 +1,27 @@
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2018-08-31 H.J. Lu <hongjiu.lu@intel.com>
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* NEWS: Mention -mx86-used-note=[no|yes].
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* configure.ac: Add --enable-x86-used-note. Define
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DEFAULT_X86_USED_NOTE.
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* config.in: Regenerated.
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* configure: Likewise.
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* config/tc-i386.c (x86_isa_1_used): New.
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(x86_feature_2_used): Likewise.
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(x86_used_note): Likewise.
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(_i386_insn): Add has_regmmx, has_regxmm, has_regymm and
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has_regzmm.
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(build_modrm_byte): Set i.has_regmmx, i.has_regzmm.
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i.has_regymm and i.has_regxmm.
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(x86_cleanup): New function.
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(output_insn): Update x86_isa_1_used and x86_feature_2_used.
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(OPTION_X86_USED_NOTE): New.
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(md_longopts): Add -mx86-used-note=.
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(md_parse_option): Handle OPTION_X86_USED_NOTE.
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(md_show_usage): Display -mx86-used-note=.
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* config/tc-i386.h (x86_cleanup): New prototype.
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(md_cleanup): New.
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* doc/c-i386.texi: Document -mx86-used-note=.
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2018-08-30 Jose E. Marchesi <jose.marchesi@oracle.com>
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* testsuite/gas/sparc/leon.d: Disassemble v8 code also in sparc64
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5
gas/NEWS
5
gas/NEWS
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@ -1,5 +1,10 @@
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-*- text -*-
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* Add -mx86-used-note=[yes|no] option to generate (or not) x86 GNU property
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notes. Add a --enable-x86-used-note configure time option to set the
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default behavior. Set the default if the configure option is not used
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to "no".
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* Add support for the MIPS Loongson EXTensions R2 (EXT2) instructions.
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* Add support for the MIPS Loongson EXTensions (EXT) instructions.
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@ -50,6 +50,10 @@
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/* Define to 1 if you want to generate x86 relax relocations by default. */
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#undef DEFAULT_GENERATE_X86_RELAX_RELOCATIONS
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/* Define to 1 if you want to generate GNU x86 used ISA and feature properties
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by default. */
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#undef DEFAULT_X86_USED_NOTE
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/* Supported emulations. */
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#undef EMULATIONS
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@ -188,6 +188,13 @@ static void s_bss (int);
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#endif
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#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
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static void handle_large_common (int small ATTRIBUTE_UNUSED);
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/* GNU_PROPERTY_X86_ISA_1_USED. */
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static unsigned int x86_isa_1_used;
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/* GNU_PROPERTY_X86_FEATURE_2_USED. */
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static unsigned int x86_feature_2_used;
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/* Generate x86 used ISA and feature properties. */
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static unsigned int x86_used_note = DEFAULT_X86_USED_NOTE;
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#endif
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static const char *default_arch = DEFAULT_ARCH;
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@ -332,6 +339,18 @@ struct _i386_insn
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unsigned int prefixes;
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unsigned char prefix[MAX_PREFIXES];
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/* Has MMX register operands. */
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bfd_boolean has_regmmx;
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/* Has XMM register operands. */
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bfd_boolean has_regxmm;
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/* Has YMM register operands. */
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bfd_boolean has_regymm;
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/* Has ZMM register operands. */
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bfd_boolean has_regzmm;
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/* RM and SIB are the modrm byte and the sib byte where the
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addressing modes of this insn are encoded. */
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modrm_byte rm;
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@ -7054,6 +7073,21 @@ build_modrm_byte (void)
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{
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i.rm.reg = i.op[dest].regs->reg_num;
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i.rm.regmem = i.op[source].regs->reg_num;
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if (i.op[dest].regs->reg_type.bitfield.regmmx
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|| i.op[source].regs->reg_type.bitfield.regmmx)
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i.has_regmmx = TRUE;
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else if (i.op[dest].regs->reg_type.bitfield.regsimd
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|| i.op[source].regs->reg_type.bitfield.regsimd)
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{
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if (i.types[dest].bitfield.zmmword
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|| i.types[source].bitfield.zmmword)
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i.has_regzmm = TRUE;
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else if (i.types[dest].bitfield.ymmword
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|| i.types[source].bitfield.ymmword)
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i.has_regymm = TRUE;
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else
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i.has_regxmm = TRUE;
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}
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if ((i.op[dest].regs->reg_flags & RegRex) != 0)
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i.rex |= REX_R;
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if ((i.op[dest].regs->reg_flags & RegVRex) != 0)
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@ -7393,17 +7427,32 @@ build_modrm_byte (void)
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unsigned int vex_reg = ~0;
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for (op = 0; op < i.operands; op++)
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if (i.types[op].bitfield.reg
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|| i.types[op].bitfield.regmmx
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|| i.types[op].bitfield.regsimd
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|| i.types[op].bitfield.regbnd
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|| i.types[op].bitfield.regmask
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|| i.types[op].bitfield.sreg2
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|| i.types[op].bitfield.sreg3
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|| i.types[op].bitfield.control
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|| i.types[op].bitfield.debug
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|| i.types[op].bitfield.test)
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break;
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{
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if (i.types[op].bitfield.reg
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|| i.types[op].bitfield.regbnd
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|| i.types[op].bitfield.regmask
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|| i.types[op].bitfield.sreg2
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|| i.types[op].bitfield.sreg3
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|| i.types[op].bitfield.control
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|| i.types[op].bitfield.debug
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|| i.types[op].bitfield.test)
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break;
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if (i.types[op].bitfield.regsimd)
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{
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if (i.types[op].bitfield.zmmword)
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i.has_regzmm = TRUE;
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else if (i.types[op].bitfield.ymmword)
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i.has_regymm = TRUE;
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else
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i.has_regxmm = TRUE;
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break;
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}
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if (i.types[op].bitfield.regmmx)
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{
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i.has_regmmx = TRUE;
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break;
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}
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}
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if (vex_3_sources)
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op = dest;
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@ -7783,12 +7832,219 @@ output_interseg_jump (void)
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md_number_to_chars (p + size, (valueT) i.op[0].imms->X_add_number, 2);
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}
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#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
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void
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x86_cleanup (void)
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{
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char *p;
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asection *seg = now_seg;
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subsegT subseg = now_subseg;
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asection *sec;
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unsigned int alignment, align_size_1;
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unsigned int isa_1_descsz, feature_2_descsz, descsz;
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unsigned int isa_1_descsz_raw, feature_2_descsz_raw;
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unsigned int padding;
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if (!IS_ELF || !x86_used_note)
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return;
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x86_isa_1_used |= GNU_PROPERTY_X86_UINT32_VALID;
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_X86;
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/* The .note.gnu.property section layout:
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Field Length Contents
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---- ---- ----
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n_namsz 4 4
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n_descsz 4 The note descriptor size
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n_type 4 NT_GNU_PROPERTY_TYPE_0
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n_name 4 "GNU"
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n_desc n_descsz The program property array
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.... .... ....
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*/
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/* Create the .note.gnu.property section. */
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sec = subseg_new (NOTE_GNU_PROPERTY_SECTION_NAME, 0);
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bfd_set_section_flags (stdoutput, sec,
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(SEC_ALLOC
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| SEC_LOAD
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| SEC_DATA
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| SEC_HAS_CONTENTS
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| SEC_READONLY));
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if (get_elf_backend_data (stdoutput)->s->elfclass == ELFCLASS64)
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{
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align_size_1 = 7;
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alignment = 3;
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}
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else
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{
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align_size_1 = 3;
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alignment = 2;
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}
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bfd_set_section_alignment (stdoutput, sec, alignment);
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elf_section_type (sec) = SHT_NOTE;
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/* GNU_PROPERTY_X86_ISA_1_USED: 4-byte type + 4-byte data size
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+ 4-byte data */
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isa_1_descsz_raw = 4 + 4 + 4;
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/* Align GNU_PROPERTY_X86_ISA_1_USED. */
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isa_1_descsz = (isa_1_descsz_raw + align_size_1) & ~align_size_1;
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feature_2_descsz_raw = isa_1_descsz;
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/* GNU_PROPERTY_X86_FEATURE_2_USED: 4-byte type + 4-byte data size
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+ 4-byte data */
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feature_2_descsz_raw += 4 + 4 + 4;
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/* Align GNU_PROPERTY_X86_FEATURE_2_USED. */
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feature_2_descsz = ((feature_2_descsz_raw + align_size_1)
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& ~align_size_1);
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descsz = feature_2_descsz;
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/* Section size: n_namsz + n_descsz + n_type + n_name + n_descsz. */
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p = frag_more (4 + 4 + 4 + 4 + descsz);
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/* Write n_namsz. */
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md_number_to_chars (p, (valueT) 4, 4);
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/* Write n_descsz. */
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md_number_to_chars (p + 4, (valueT) descsz, 4);
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/* Write n_type. */
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md_number_to_chars (p + 4 * 2, (valueT) NT_GNU_PROPERTY_TYPE_0, 4);
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/* Write n_name. */
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memcpy (p + 4 * 3, "GNU", 4);
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/* Write 4-byte type. */
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md_number_to_chars (p + 4 * 4,
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(valueT) GNU_PROPERTY_X86_ISA_1_USED, 4);
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/* Write 4-byte data size. */
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md_number_to_chars (p + 4 * 5, (valueT) 4, 4);
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/* Write 4-byte data. */
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md_number_to_chars (p + 4 * 6, (valueT) x86_isa_1_used, 4);
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/* Zero out paddings. */
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padding = isa_1_descsz - isa_1_descsz_raw;
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if (padding)
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memset (p + 4 * 7, 0, padding);
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/* Write 4-byte type. */
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md_number_to_chars (p + isa_1_descsz + 4 * 4,
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(valueT) GNU_PROPERTY_X86_FEATURE_2_USED, 4);
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/* Write 4-byte data size. */
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md_number_to_chars (p + isa_1_descsz + 4 * 5, (valueT) 4, 4);
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/* Write 4-byte data. */
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md_number_to_chars (p + isa_1_descsz + 4 * 6,
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(valueT) x86_feature_2_used, 4);
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/* Zero out paddings. */
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padding = feature_2_descsz - feature_2_descsz_raw;
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if (padding)
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memset (p + isa_1_descsz + 4 * 7, 0, padding);
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/* We probably can't restore the current segment, for there likely
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isn't one yet... */
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if (seg && subseg)
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subseg_set (seg, subseg);
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}
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#endif
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static void
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output_insn (void)
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{
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fragS *insn_start_frag;
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offsetT insn_start_off;
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#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
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if (IS_ELF && x86_used_note)
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{
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if (i.tm.cpu_flags.bitfield.cpucmov)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_CMOV;
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if (i.tm.cpu_flags.bitfield.cpusse)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_SSE;
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if (i.tm.cpu_flags.bitfield.cpusse2)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_SSE2;
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if (i.tm.cpu_flags.bitfield.cpusse3)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_SSE3;
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if (i.tm.cpu_flags.bitfield.cpussse3)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_SSSE3;
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if (i.tm.cpu_flags.bitfield.cpusse4_1)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_SSE4_1;
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if (i.tm.cpu_flags.bitfield.cpusse4_2)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_SSE4_2;
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if (i.tm.cpu_flags.bitfield.cpuavx)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX;
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if (i.tm.cpu_flags.bitfield.cpuavx2)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX2;
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if (i.tm.cpu_flags.bitfield.cpufma)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_FMA;
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if (i.tm.cpu_flags.bitfield.cpuavx512f)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512F;
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if (i.tm.cpu_flags.bitfield.cpuavx512cd)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512CD;
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if (i.tm.cpu_flags.bitfield.cpuavx512er)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512ER;
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if (i.tm.cpu_flags.bitfield.cpuavx512pf)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512PF;
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if (i.tm.cpu_flags.bitfield.cpuavx512vl)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512VL;
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if (i.tm.cpu_flags.bitfield.cpuavx512dq)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512DQ;
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if (i.tm.cpu_flags.bitfield.cpuavx512bw)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512BW;
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if (i.tm.cpu_flags.bitfield.cpuavx512_4fmaps)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS;
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if (i.tm.cpu_flags.bitfield.cpuavx512_4vnniw)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW;
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if (i.tm.cpu_flags.bitfield.cpuavx512_bitalg)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512_BITALG;
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if (i.tm.cpu_flags.bitfield.cpuavx512ifma)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512_IFMA;
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if (i.tm.cpu_flags.bitfield.cpuavx512vbmi)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512_VBMI;
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if (i.tm.cpu_flags.bitfield.cpuavx512_vbmi2)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2;
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if (i.tm.cpu_flags.bitfield.cpuavx512_vnni)
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x86_isa_1_used |= GNU_PROPERTY_X86_ISA_1_AVX512_VNNI;
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if (i.tm.cpu_flags.bitfield.cpu8087
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|| i.tm.cpu_flags.bitfield.cpu287
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|| i.tm.cpu_flags.bitfield.cpu387
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|| i.tm.cpu_flags.bitfield.cpu687
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|| i.tm.cpu_flags.bitfield.cpufisttp)
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_X87;
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/* Don't set GNU_PROPERTY_X86_FEATURE_2_MMX for prefetchtXXX nor
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Xfence instructions. */
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if (i.tm.base_opcode != 0xf18
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&& i.tm.base_opcode != 0xf0d
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&& i.tm.base_opcode != 0xfae
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&& (i.has_regmmx
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|| i.tm.cpu_flags.bitfield.cpummx
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|| i.tm.cpu_flags.bitfield.cpua3dnow
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|| i.tm.cpu_flags.bitfield.cpua3dnowa))
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_MMX;
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if (i.has_regxmm)
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_XMM;
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if (i.has_regymm)
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_YMM;
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if (i.has_regzmm)
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_ZMM;
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if (i.tm.cpu_flags.bitfield.cpufxsr)
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_FXSR;
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if (i.tm.cpu_flags.bitfield.cpuxsave)
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x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_XSAVE;
|
||||
if (i.tm.cpu_flags.bitfield.cpuxsaveopt)
|
||||
x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT;
|
||||
if (i.tm.cpu_flags.bitfield.cpuxsavec)
|
||||
x86_feature_2_used |= GNU_PROPERTY_X86_FEATURE_2_XSAVEC;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Tie dwarf2 debug info to the address at the start of the insn.
|
||||
We can't do this after the insn has been output as the current
|
||||
frag may have been closed off. eg. by frag_var. */
|
||||
|
|
@ -10581,6 +10837,7 @@ const char *md_shortopts = "qnO::";
|
|||
#define OPTION_MAMD64 (OPTION_MD_BASE + 22)
|
||||
#define OPTION_MINTEL64 (OPTION_MD_BASE + 23)
|
||||
#define OPTION_MFENCE_AS_LOCK_ADD (OPTION_MD_BASE + 24)
|
||||
#define OPTION_X86_USED_NOTE (OPTION_MD_BASE + 25)
|
||||
|
||||
struct option md_longopts[] =
|
||||
{
|
||||
|
|
@ -10592,6 +10849,7 @@ struct option md_longopts[] =
|
|||
#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
|
||||
{"x32", no_argument, NULL, OPTION_X32},
|
||||
{"mshared", no_argument, NULL, OPTION_MSHARED},
|
||||
{"mx86-used-note", required_argument, NULL, OPTION_X86_USED_NOTE},
|
||||
#endif
|
||||
{"divide", no_argument, NULL, OPTION_DIVIDE},
|
||||
{"march", required_argument, NULL, OPTION_MARCH},
|
||||
|
|
@ -10659,6 +10917,17 @@ md_parse_option (int c, const char *arg)
|
|||
case OPTION_MSHARED:
|
||||
shared = 1;
|
||||
break;
|
||||
|
||||
case OPTION_X86_USED_NOTE:
|
||||
if (strcasecmp (arg, "yes") == 0)
|
||||
x86_used_note = 1;
|
||||
else if (strcasecmp (arg, "no") == 0)
|
||||
x86_used_note = 0;
|
||||
else
|
||||
as_fatal (_("invalid -mx86-used-note= option: `%s'"), arg);
|
||||
break;
|
||||
|
||||
|
||||
#endif
|
||||
#if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \
|
||||
|| defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O))
|
||||
|
|
@ -11196,9 +11465,19 @@ md_show_usage (FILE *stream)
|
|||
-mnaked-reg don't require `%%' prefix for registers\n"));
|
||||
fprintf (stream, _("\
|
||||
-madd-bnd-prefix add BND prefix for all valid branches\n"));
|
||||
#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
|
||||
fprintf (stream, _("\
|
||||
-mshared disable branch optimization for shared code\n"));
|
||||
# if defined (TE_PE) || defined (TE_PEP)
|
||||
fprintf (stream, _("\
|
||||
-mx86-used-note=[no|yes] "));
|
||||
if (DEFAULT_X86_USED_NOTE)
|
||||
fprintf (stream, _("(default: yes)\n"));
|
||||
else
|
||||
fprintf (stream, _("(default: no)\n"));
|
||||
fprintf (stream, _("\
|
||||
generate x86 used ISA and feature properties\n"));
|
||||
#endif
|
||||
#if defined (TE_PE) || defined (TE_PEP)
|
||||
fprintf (stream, _("\
|
||||
-mbig-obj generate big object files\n"));
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -316,6 +316,11 @@ extern bfd_vma x86_64_section_letter (int, const char **);
|
|||
#define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG)
|
||||
#define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN)
|
||||
|
||||
#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
|
||||
extern void x86_cleanup (void);
|
||||
#define md_cleanup() x86_cleanup ()
|
||||
#endif
|
||||
|
||||
#ifdef TE_PE
|
||||
|
||||
#define O_secrel O_md1
|
||||
|
|
|
|||
|
|
@ -808,6 +808,7 @@ enable_compressed_debug_sections
|
|||
enable_x86_relax_relocations
|
||||
enable_elf_stt_common
|
||||
enable_generate_build_notes
|
||||
enable_x86_used_note
|
||||
enable_werror
|
||||
enable_build_warnings
|
||||
with_cpu
|
||||
|
|
@ -1469,6 +1470,7 @@ Optional Features:
|
|||
--enable-generate-build-notes
|
||||
generate GNU Build notes if none are provided by the
|
||||
input
|
||||
--enable-x86-used-note generate GNU x86 used ISA and feature properties
|
||||
--enable-werror treat compile warnings as errors
|
||||
--enable-build-warnings enable build-time compiler warnings
|
||||
--disable-nls do not use Native Language Support
|
||||
|
|
@ -11335,7 +11337,7 @@ else
|
|||
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
|
||||
lt_status=$lt_dlunknown
|
||||
cat > conftest.$ac_ext <<_LT_EOF
|
||||
#line 11338 "configure"
|
||||
#line 11340 "configure"
|
||||
#include "confdefs.h"
|
||||
|
||||
#if HAVE_DLFCN_H
|
||||
|
|
@ -11441,7 +11443,7 @@ else
|
|||
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
|
||||
lt_status=$lt_dlunknown
|
||||
cat > conftest.$ac_ext <<_LT_EOF
|
||||
#line 11444 "configure"
|
||||
#line 11446 "configure"
|
||||
#include "confdefs.h"
|
||||
|
||||
#if HAVE_DLFCN_H
|
||||
|
|
@ -12111,6 +12113,19 @@ esac
|
|||
fi
|
||||
|
||||
|
||||
# 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.
|
||||
# Check whether --enable-x86-used-note was given.
|
||||
if test "${enable_x86_used_note+set}" = set; then :
|
||||
enableval=$enable_x86_used_note; case "${enableval}" in
|
||||
yes) ac_default_generate_x86_used_note=1 ;;
|
||||
no) ac_default_generate_x86_used_note=0 ;;
|
||||
esac
|
||||
fi
|
||||
|
||||
|
||||
using_cgen=no
|
||||
|
||||
|
||||
|
|
@ -13039,6 +13054,15 @@ cat >>confdefs.h <<_ACEOF
|
|||
_ACEOF
|
||||
|
||||
|
||||
if test ${ac_default_generate_x86_used_note} = unset; then
|
||||
ac_default_generate_x86_used_note=0
|
||||
fi
|
||||
|
||||
cat >>confdefs.h <<_ACEOF
|
||||
#define DEFAULT_X86_USED_NOTE $ac_default_generate_x86_used_note
|
||||
_ACEOF
|
||||
|
||||
|
||||
if test x$ac_default_compressed_debug_sections = xyes ; then
|
||||
|
||||
$as_echo "#define DEFAULT_FLAG_COMPRESS_DEBUG 1" >>confdefs.h
|
||||
|
|
|
|||
|
|
@ -113,6 +113,19 @@ AC_ARG_ENABLE(generate_build_notes,
|
|||
esac])dnl
|
||||
|
||||
|
||||
# Decide if the x86 ELF assembler should default to generating GNU x86
|
||||
# used ISA and feature properties.
|
||||
ac_default_generate_x86_used_note=unset
|
||||
# Provide a configuration option to override the default.
|
||||
AC_ARG_ENABLE(x86-used-note,
|
||||
AS_HELP_STRING([--enable-x86-used-note],
|
||||
[generate GNU x86 used ISA and feature properties]),
|
||||
[case "${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
|
||||
|
|
|
|||
|
|
@ -400,6 +400,15 @@ R_X86_64_REX_GOTPCRELX, in 64-bit mode.
|
|||
relocations. The default can be controlled by a configure option
|
||||
@option{--enable-x86-relax-relocations}.
|
||||
|
||||
@cindex @samp{-mx86-used-note=} option, i386
|
||||
@cindex @samp{-mx86-used-note=} option, x86-64
|
||||
@item -mx86-used-note=@var{no}
|
||||
@itemx -mx86-used-note=@var{yes}
|
||||
These options control whether the assembler should generate
|
||||
GNU_PROPERTY_X86_ISA_1_USED and GNU_PROPERTY_X86_FEATURE_2_USED
|
||||
GNU property notes. The default can be controlled by the
|
||||
@option{--enable-x86-used-note} configure option.
|
||||
|
||||
@cindex @samp{-mevexrcig=} option, i386
|
||||
@cindex @samp{-mevexrcig=} option, x86-64
|
||||
@item -mevexrcig=@var{rne}
|
||||
|
|
|
|||
Loading…
Reference in New Issue