Use ud2 assembly mnemonic when available.
gcc/ * configure.ac (HAVE_AS_IX86_UD2): New test for 'ud2' mnemonic. * configure: Regenerated. * config.in: Regenerated. * config/i386/i386.md (trap) [HAVE_AS_IX86_UD2]: Use the mnemonic instead of ASM_SHORT. From-SVN: r207789
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@ -1,3 +1,11 @@
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2014-02-14 Roland McGrath <mcgrathr@google.com>
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* configure.ac (HAVE_AS_IX86_UD2): New test for 'ud2' mnemonic.
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* configure: Regenerated.
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* config.in: Regenerated.
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* config/i386/i386.md (trap) [HAVE_AS_IX86_UD2]: Use the mnemonic
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instead of ASM_SHORT.
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2014-02-14 Vladimir Makarov <vmakarov@redhat.com>
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Richard Earnshaw <rearnsha@arm.com>
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@ -375,6 +375,12 @@
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#endif
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/* Define if your assembler supports the 'ud2' mnemonic. */
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#ifndef USED_FOR_TARGET
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#undef HAVE_AS_IX86_UD2
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#endif
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/* Define if your assembler supports the lituse_jsrdirect relocation. */
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#ifndef USED_FOR_TARGET
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#undef HAVE_AS_JSRDIRECT_RELOCS
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@ -17843,7 +17843,13 @@
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(define_insn "trap"
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[(trap_if (const_int 1) (const_int 6))]
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""
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{ return ASM_SHORT "0x0b0f"; }
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{
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#ifdef HAVE_AS_IX86_UD2
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return "ud2";
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#else
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return ASM_SHORT "0x0b0f";
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#endif
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}
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[(set_attr "length" "2")])
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(define_expand "prefetch"
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@ -25107,6 +25107,37 @@ if test $gcc_cv_as_ix86_rep_lock_prefix = yes; then
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$as_echo "#define HAVE_AS_IX86_REP_LOCK_PREFIX 1" >>confdefs.h
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for ud2 mnemonic" >&5
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$as_echo_n "checking assembler for ud2 mnemonic... " >&6; }
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if test "${gcc_cv_as_ix86_ud2+set}" = set; then :
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$as_echo_n "(cached) " >&6
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else
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gcc_cv_as_ix86_ud2=no
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if test x$gcc_cv_as != x; then
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$as_echo 'ud2' > conftest.s
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if { ac_try='$gcc_cv_as $gcc_cv_as_flags -o conftest.o conftest.s >&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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gcc_cv_as_ix86_ud2=yes
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else
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echo "configure: failed program was" >&5
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cat conftest.s >&5
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fi
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rm -f conftest.o conftest.s
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_ix86_ud2" >&5
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$as_echo "$gcc_cv_as_ix86_ud2" >&6; }
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if test $gcc_cv_as_ix86_ud2 = yes; then
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$as_echo "#define HAVE_AS_IX86_UD2 1" >>confdefs.h
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for R_386_TLS_GD_PLT reloc" >&5
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@ -3895,6 +3895,12 @@ foo: nop
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[AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
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[Define if the assembler supports 'rep <insn>, lock <insn>'.])])
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gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
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gcc_cv_as_ix86_ud2,,,
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[ud2],,
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[AC_DEFINE(HAVE_AS_IX86_UD2, 1,
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[Define if your assembler supports the 'ud2' mnemonic.])])
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gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
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gcc_cv_as_ix86_tlsgdplt,,,
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[call tls_gd@tlsgdplt],
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