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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-10-20 15:07:42 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-10-20 15:26:23 -0700 |
| commit | 9889cbb14ebea4b281408afcfd94ad6646ab370a (patch) | |
| tree | ffad5e2435f482ae1392027828b13905776e5890 /gas | |
| parent | f90fd8c2f17c7631915103ce5b760830a156ee93 (diff) | |
| download | gdb-9889cbb14ebea4b281408afcfd94ad6646ab370a.zip gdb-9889cbb14ebea4b281408afcfd94ad6646ab370a.tar.gz gdb-9889cbb14ebea4b281408afcfd94ad6646ab370a.tar.bz2 | |
Check invalid mask registers
In 32-bit, the REX_B bit in the 3-byte VEX prefix is ignored and the
the highest bit in VEX.vvvv is either 1 or ignored. In 64-bit, we
need to check invalid mask registers.
gas/
PR binutis/20705
* testsuite/gas/i386/i386.exp: Run x86-64-opcode-bad.
* testsuite/gas/i386/x86-64-opcode-bad.d: New file.
* testsuite/gas/i386/x86-64-opcode-bad.s: Likewise.
opcodes/
PR binutis/20705
* i386-dis.c (get_valid_dis386): Ignore the REX_B bit and
the highest bit in VEX.vvvv for the 3-byte VEX prefix in
32-bit mode. Don't check vex.register_specifier in 32-bit
mode.
(OP_E_register): Check invalid mask registers.
(OP_G): Likewise.
(OP_VEX): Likewise.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 7 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/i386.exp | 1 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/x86-64-opcode-bad.d | 12 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/x86-64-opcode-bad.s | 10 |
4 files changed, 30 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 2e3adbe..50282ab 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,10 @@ +2016-10-20 H.J. Lu <hongjiu.lu@intel.com> + + PR binutis/20705 + * testsuite/gas/i386/i386.exp: Run x86-64-opcode-bad. + * testsuite/gas/i386/x86-64-opcode-bad.d: New file. + * testsuite/gas/i386/x86-64-opcode-bad.s: Likewise. + 2016-10-19 Renlin Li <renlin.li@arm.com> * config/tc-arm.c (encode_arm_shift): Generate unpredictable warning diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp index c2cdf60..e2b874d 100644 --- a/gas/testsuite/gas/i386/i386.exp +++ b/gas/testsuite/gas/i386/i386.exp @@ -776,6 +776,7 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t run_dump_test "x86-64-pr20141" run_list_test "x86-64-avx512vl-1" "-al" run_list_test "x86-64-avx512vl-2" "-al" + run_dump_test "x86-64-opcode-bad" if { ![istarget "*-*-aix*"] && ![istarget "*-*-beos*"] diff --git a/gas/testsuite/gas/i386/x86-64-opcode-bad.d b/gas/testsuite/gas/i386/x86-64-opcode-bad.d new file mode 100644 index 0000000..24fb5eb --- /dev/null +++ b/gas/testsuite/gas/i386/x86-64-opcode-bad.d @@ -0,0 +1,12 @@ +#as: --64 +#objdump: -dw +#name: 64bit bad opcodes + +.*: +file format .* + +Disassembly of section .text: + +0+ <.text>: + +[a-f0-9]+: c5 ac 46 f5 kxnorw %k5,\(bad\),%k6 + +[a-f0-9]+: c5 2c 46 f5 kxnorw %k5,\(bad\),\(bad\) +#pass diff --git a/gas/testsuite/gas/i386/x86-64-opcode-bad.s b/gas/testsuite/gas/i386/x86-64-opcode-bad.s new file mode 100644 index 0000000..5acbcbb --- /dev/null +++ b/gas/testsuite/gas/i386/x86-64-opcode-bad.s @@ -0,0 +1,10 @@ + .text +# All the followings are bad opcodes for x86-64. + .byte 0xc5 + .byte 0xac + .byte 0x46 + .byte 0xf5 + .byte 0xc5 + .byte 0x2c + .byte 0x46 + .byte 0xf5 |