target/riscv: vector integer add-with-carry / subtract-with-borrow instructions

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200701152549.1218-13-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 6ec166d..be63e90 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -70,6 +70,7 @@
 @r2_nfvm ... ... vm:1 ..... ..... ... ..... ....... &r2nfvm %nf %rs1 %rd
 @r_nfvm  ... ... vm:1 ..... ..... ... ..... ....... &rnfvm %nf %rs2 %rs1 %rd
 @r_vm    ...... vm:1 ..... ..... ... ..... ....... &rmrr %rs2 %rs1 %rd
+@r_vm_1  ...... . ..... ..... ... ..... .......    &rmrr vm=1 %rs2 %rs1 %rd
 @r_wdvm  ..... wd:1 vm:1 ..... ..... ... ..... ....... &rwdvm %rs2 %rs1 %rd
 @r2_zimm . zimm:11  ..... ... ..... ....... %rs1 %rd
 
@@ -302,6 +303,16 @@
 vwsubu_wx       110110 . ..... ..... 110 ..... 1010111 @r_vm
 vwsub_wv        110111 . ..... ..... 010 ..... 1010111 @r_vm
 vwsub_wx        110111 . ..... ..... 110 ..... 1010111 @r_vm
+vadc_vvm        010000 1 ..... ..... 000 ..... 1010111 @r_vm_1
+vadc_vxm        010000 1 ..... ..... 100 ..... 1010111 @r_vm_1
+vadc_vim        010000 1 ..... ..... 011 ..... 1010111 @r_vm_1
+vmadc_vvm       010001 1 ..... ..... 000 ..... 1010111 @r_vm_1
+vmadc_vxm       010001 1 ..... ..... 100 ..... 1010111 @r_vm_1
+vmadc_vim       010001 1 ..... ..... 011 ..... 1010111 @r_vm_1
+vsbc_vvm        010010 1 ..... ..... 000 ..... 1010111 @r_vm_1
+vsbc_vxm        010010 1 ..... ..... 100 ..... 1010111 @r_vm_1
+vmsbc_vvm       010011 1 ..... ..... 000 ..... 1010111 @r_vm_1
+vmsbc_vxm       010011 1 ..... ..... 100 ..... 1010111 @r_vm_1
 
 vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm
 vsetvl          1000000 ..... ..... 111 ..... 1010111  @r