vtimofei
/
LF-Building-a-RISC-V-CPU-Core
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Decode the rest instructions

This commit is contained in:
Victor Timofei 2022-01-16 12:53:15 +02:00
parent 8fc1626ae3
commit 97e7881dbe
Signed by: vtimofei
GPG Key ID: B790DCEBE281403A
1 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
risc-v_shell.tlv
View File

@ -89,6 +89,31 @@
$is_addi = $dec_bits ==? 11'bx_000_001_0011;
$is_add = $dec_bits == 11'b0_000_011_0011;
$is_lui = $dec_bits ==? 11'bx_xxx_011_0111;
$is_auipc = $dec_bits ==? 11'bx_xxx_001_0111;
$is_jal = $dec_bits ==? 11'bx_xxx_110_1111;
$is_slti = $dec_bits ==? 11'bx_010_011_0011;
$is_sltiu = $dec_bits ==? 11'bx_011_001_0011;
$is_xori = $dec_bits ==? 11'bx_100_001_0011;
$is_ori = $dec_bits ==? 11'bx_110_001_0011;
$is_andi = $dec_bits ==? 11'bx_111_001_0011;
$is_slli = $dec_bits == 11'b0_001_001_0011;
$is_srli = $dec_bits == 11'b0_101_001_0011;
$is_srai = $dec_bits == 11'b1_101_001_0011;
$is_sub = $dec_bits == 11'b1_000_011_0011;
$is_sll = $dec_bits == 11'b0_001_011_0011;
$is_slt = $dec_bits == 11'b0_010_011_0011;
$is_sltu = $dec_bits == 11'b0_011_011_0011;
$is_xor = $dec_bits == 11'b0_100_011_0011;
$is_srl = $dec_bits == 11'b0_101_011_0011;
$is_sra = $dec_bits == 11'b1_101_011_0011;
$is_or = $dec_bits == 11'b0_110_011_0011;
$is_and = $dec_bits == 11'b0_111_011_0011;
// Treat all load and store instructions the same
$is_load = $dec_bits ==? 11'bx_xxx_000_0011;
$is_s_instr = $dec_bits ==? 11'bx_xxx_010_0011;
// Compute whether to branch
$taken_br = $is_beq ? $src1_value == $src2_value :
$is_bne ? $src1_value != $src2_value :