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target/microblaze: Convert dec_add to decodetree

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Adds infrastrucure for translation of instructions, which could
not be added before their first use.  Cache a temporary which
represents r0 as the immediate 0 value, or a sink.

Move the special case of opcode_0_illegal from old_decode()
into decodetree as well, lest this get interpreted as add.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-08-17 22:17:58 -07:00
parent 44d1432ba2
commit 2080017965
2 changed files with 178 additions and 43 deletions
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24
target/microblaze/insns.decode
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@ -16,3 +16,27 @@
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <http://www.gnu.org/licenses/>.
#
&typea rd ra rb
&typeb rd ra imm
# Include any IMM prefix in the value reported.
%extimm 0:s16 !function=typeb_imm
@typea ...... rd:5 ra:5 rb:5 ... .... .... &typea
@typeb ...... rd:5 ra:5 ................ &typeb imm=%extimm
###
{
zero 000000 00000 00000 00000 000 0000 0000
add 000000 ..... ..... ..... 000 0000 0000 @typea
}
addc 000010 ..... ..... ..... 000 0000 0000 @typea
addk 000100 ..... ..... ..... 000 0000 0000 @typea
addkc 000110 ..... ..... ..... 000 0000 0000 @typea
addi 001000 ..... ..... ................ @typeb
addic 001010 ..... ..... ................ @typeb
addik 001100 ..... ..... ................ @typeb
addikc 001110 ..... ..... ................ @typeb