x86/MPX: fix address size handling
While address overrides are ignored in 64-bit mode (and hence shouldn't
really result in an error, but upon v1 converting this to a warning I
was told otherwise), trying to use 16-bit addressing is documented to
result in #UD, and hence the assembler should reject the attempt. (The
added test case at once also checks that bndc{l,n,u} won't accept
16-bit register operands.)
This commit is contained in:
Jan Beulich
Jan Beulich
parent
83b16ac694
commit
327e8c421b
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@ -1,3 +1,11 @@
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2016-07-01 Jan Beulich <jbeulich@suse.com>
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* tc-i386.c (md_assemble): Alter address size checking for MPX
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instructions.
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* testsuite/gas/i386/mpx-inval-2.s: New.
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* testsuite/gas/i386/mpx-inval-2.l: New.
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* testsuite/gas/i386/i386.exp: Run new test.
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2016-07-01 Jan Beulich <jbeulich@suse.com>
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PR gas/20318
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@ -3666,10 +3666,15 @@ md_assemble (char *line)
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if (i.bnd_prefix && !i.tm.opcode_modifier.bndprefixok)
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as_bad (_("expecting valid branch instruction after `bnd'"));
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if (i.tm.cpu_flags.bitfield.cpumpx
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&& flag_code == CODE_64BIT
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&& i.prefix[ADDR_PREFIX])
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as_bad (_("32-bit address isn't allowed in 64-bit MPX instructions."));
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if (i.tm.cpu_flags.bitfield.cpumpx)
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{
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if (flag_code == CODE_64BIT && i.prefix[ADDR_PREFIX])
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as_bad (_("32-bit address isn't allowed in 64-bit MPX instructions."));
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else if (flag_code != CODE_16BIT
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? i.prefix[ADDR_PREFIX]
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: i.mem_operands && !i.prefix[ADDR_PREFIX])
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as_bad (_("16-bit address isn't allowed in MPX instructions"));
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}
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/* Insert BND prefix. */
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if (add_bnd_prefix
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@ -283,6 +283,7 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_32_check]]
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run_dump_test "smap"
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run_dump_test "mpx"
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run_list_test "mpx-inval-1" "-al"
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run_list_test "mpx-inval-2" "-al"
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run_dump_test "mpx-add-bnd-prefix"
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run_dump_test "sha"
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run_dump_test "clflushopt"
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@ -0,0 +1,145 @@
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.*: Assembler messages:
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.*:5: Error: 16-bit address isn't allowed in MPX instructions
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.*:6: Error: 16-bit address isn't allowed in MPX instructions
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.*:7: Error: 16-bit address isn't allowed in MPX instructions
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.*:8: Error: 16-bit address isn't allowed in MPX instructions
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.*:9: Error: 16-bit address isn't allowed in MPX instructions
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.*:10: Error: 16-bit address isn't allowed in MPX instructions
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.*:11: Error: 16-bit address isn't allowed in MPX instructions
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.*:12: Error: 16-bit address isn't allowed in MPX instructions
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.*:14: Error: .* `bndcl'
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.*:15: Error: .* `bndcn'
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.*:16: Error: .* `bndcu'
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.*:19: Error: 16-bit address isn't allowed in MPX instructions
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.*:20: Error: 16-bit address isn't allowed in MPX instructions
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.*:21: Error: 16-bit address isn't allowed in MPX instructions
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.*:22: Error: 16-bit address isn't allowed in MPX instructions
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.*:23: Error: 16-bit address isn't allowed in MPX instructions
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.*:24: Error: 16-bit address isn't allowed in MPX instructions
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.*:25: Error: 16-bit address isn't allowed in MPX instructions
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.*:26: Error: 16-bit address isn't allowed in MPX instructions
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.*:28: Error: .* `bndcl'
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.*:29: Error: .* `bndcn'
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.*:30: Error: .* `bndcu'
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.*:35: Error: 16-bit address isn't allowed in MPX instructions
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.*:36: Error: 16-bit address isn't allowed in MPX instructions
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.*:37: Error: 16-bit address isn't allowed in MPX instructions
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.*:38: Error: 16-bit address isn't allowed in MPX instructions
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.*:39: Error: 16-bit address isn't allowed in MPX instructions
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.*:40: Error: 16-bit address isn't allowed in MPX instructions
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.*:41: Error: 16-bit address isn't allowed in MPX instructions
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.*:42: Error: 16-bit address isn't allowed in MPX instructions
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.*:44: Error: .* `bndcl'
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.*:45: Error: .* `bndcn'
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.*:46: Error: .* `bndcu'
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.*:49: Error: 16-bit address isn't allowed in MPX instructions
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.*:50: Error: 16-bit address isn't allowed in MPX instructions
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.*:51: Error: 16-bit address isn't allowed in MPX instructions
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.*:52: Error: 16-bit address isn't allowed in MPX instructions
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.*:53: Error: 16-bit address isn't allowed in MPX instructions
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.*:54: Error: 16-bit address isn't allowed in MPX instructions
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.*:55: Error: 16-bit address isn't allowed in MPX instructions
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.*:56: Error: 16-bit address isn't allowed in MPX instructions
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.*:58: Error: .* `bndcl'
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.*:59: Error: .* `bndcn'
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.*:60: Error: .* `bndcu'
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GAS LISTING .*
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#...
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[ ]*[1-9][0-9]*[ ]+mpx32:
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcl \(%bx,%si\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcn \(%bx,%di\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcu \(%bp,%si\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndldx \(%bp,%di\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmk \(%bx\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov \(%bp\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov %bnd0, \(%si\)
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndstx %bnd0, \(%di\)
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcl bnd0, \[bx\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcn bnd0, \[bp\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcu bnd0, \[si\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndldx bnd0, \[di\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmk bnd0, \[bx\+si\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov bnd0, \[bx\+di\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov \[bp\+si\], bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndstx \[bp\+di\], bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+mpx16:
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcl \(%bx,%si\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcn \(%bx,%di\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcu \(%bp,%si\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndldx \(%bp,%di\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmk \(%bx\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov \(%bp\), %bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov %bnd0, \(%si\)
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndstx %bnd0, \(%di\)
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcl bnd0, \[bx\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcn bnd0, \[bp\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndcu bnd0, \[si\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndldx bnd0, \[di\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmk bnd0, \[bx\+si\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov bnd0, \[bx\+di\]
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndmov \[bp\+si\], bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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[ ]*[1-9][0-9]*[ ]+[?0-9A-F ]*bndstx \[bp\+di\], bnd0
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.* Error: 16-bit address isn't allowed in MPX instructions
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#...
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@ -0,0 +1,60 @@
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# MPX instructions
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.text
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.code32
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mpx32:
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bndcl (%bx,%si), %bnd0
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bndcn (%bx,%di), %bnd0
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bndcu (%bp,%si), %bnd0
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bndldx (%bp,%di), %bnd0
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bndmk (%bx), %bnd0
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bndmov (%bp), %bnd0
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bndmov %bnd0, (%si)
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bndstx %bnd0, (%di)
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bndcl %di, %bnd1
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bndcn %si, %bnd2
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bndcu %bp, %bnd3
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.intel_syntax noprefix
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bndcl bnd0, [bx]
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bndcn bnd0, [bp]
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bndcu bnd0, [si]
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bndldx bnd0, [di]
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bndmk bnd0, [bx+si]
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bndmov bnd0, [bx+di]
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bndmov [bp+si], bnd0
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bndstx [bp+di], bnd0
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bndcl bnd3, ax
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bndcn bnd2, cx
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bndcu bnd1, dx
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.att_syntax prefix
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.code16
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mpx16:
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bndcl (%bx,%si), %bnd0
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bndcn (%bx,%di), %bnd0
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bndcu (%bp,%si), %bnd0
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bndldx (%bp,%di), %bnd0
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bndmk (%bx), %bnd0
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bndmov (%bp), %bnd0
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bndmov %bnd0, (%si)
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bndstx %bnd0, (%di)
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bndcl %di, %bnd1
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bndcn %si, %bnd2
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bndcu %bp, %bnd3
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.intel_syntax noprefix
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bndcl bnd0, [bx]
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bndcn bnd0, [bp]
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bndcu bnd0, [si]
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bndldx bnd0, [di]
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bndmk bnd0, [bx+si]
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bndmov bnd0, [bx+di]
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bndmov [bp+si], bnd0
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bndstx [bp+di], bnd0
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bndcl bnd3, ax
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bndcn bnd2, cx
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bndcu bnd1, dx
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