diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2019-04-01 10:11:51 +0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2019-05-24 12:09:22 -0700 |
| commit | 6cafec92f1c862a9754ef6a28be68ba7178a284d (patch) | |
| tree | 56b09514f750e95317e80bb2fed7188c2edf7b40 /target/riscv/insn16.decode | |
| parent | e1d455dd91c935c714412dafeb24db947429a929 (diff) | |
target/riscv: Merge argument decode for RVC shifti
Special handling for IMM==0 is the only difference between
RVC shifti and RVI shifti. This can be handled with !function.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'target/riscv/insn16.decode')
| -rw-r--r-- | target/riscv/insn16.decode | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/target/riscv/insn16.decode b/target/riscv/insn16.decode index d0cc778bc9..add9cf3923 100644 --- a/target/riscv/insn16.decode +++ b/target/riscv/insn16.decode @@ -30,7 +30,7 @@ %imm_cb 12:s1 5:2 2:1 10:2 3:2 !function=ex_shift_1 %imm_cj 12:s1 8:1 9:2 6:1 7:1 2:1 11:1 3:3 !function=ex_shift_1 -%nzuimm_6bit 12:1 2:5 +%shimm_6bit 12:1 2:5 !function=ex_rvc_shifti %uimm_6bit_ld 2:3 12:1 5:2 !function=ex_shift_3 %uimm_6bit_lw 2:2 12:1 4:3 !function=ex_shift_2 %uimm_6bit_sd 7:3 10:3 !function=ex_shift_3 @@ -94,9 +94,9 @@ uimm_sdsp=%uimm_6bit_sd rs2=%rs2_5 @c_shift ... . .. ... ..... .. \ - &shift rd=%rs1_3 rs1=%rs1_3 shamt=%nzuimm_6bit + &shift rd=%rs1_3 rs1=%rs1_3 shamt=%shimm_6bit @c_shift2 ... . .. ... ..... .. \ - &shift rd=%rd rs1=%rd shamt=%nzuimm_6bit + &shift rd=%rd rs1=%rd shamt=%shimm_6bit @c_andi ... . .. ... ..... .. &i imm=%imm_ci rs1=%rs1_3 rd=%rs1_3 @@ -114,8 +114,8 @@ addi 000 . ..... ..... 01 @ci c_jal_addiw 001 . ..... ..... 01 @ci #Note: parse rd and/or imm manually addi 010 . ..... ..... 01 @c_li c_addi16sp_lui 011 . ..... ..... 01 @c_addi16sp_lui # shares opc with C.LUI -c_srli 100 . 00 ... ..... 01 @c_shift -c_srai 100 . 01 ... ..... 01 @c_shift +srli 100 . 00 ... ..... 01 @c_shift +srai 100 . 01 ... ..... 01 @c_shift andi 100 . 10 ... ..... 01 @c_andi sub 100 0 11 ... 00 ... 01 @cs_2 xor 100 0 11 ... 01 ... 01 @cs_2 @@ -128,7 +128,7 @@ beq 110 ... ... ..... 01 @cb_z bne 111 ... ... ..... 01 @cb_z # *** RV64C Standard Extension (Quadrant 2) *** -c_slli 000 . ..... ..... 10 @c_shift2 +slli 000 . ..... ..... 10 @c_shift2 fld 001 . ..... ..... 10 @c_ldsp lw 010 . ..... ..... 10 @c_lwsp c_flwsp_ldsp 011 . ..... ..... 10 @c_flwsp_ldsp #C.LDSP:RV64;C.FLWSP:RV32 |