Hardware
/
picorv32
mirror of https://github.com/YosysHQ/picorv32.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Update riscv-formal altops bitmasks

This commit is contained in:
Clifford Wolf 2017-10-07 01:24:59 +02:00
parent 7b6aa21f34
commit ed69f9e451
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
picorv32.v
View File

@ -2331,10 +2331,10 @@ module picorv32_pcpi_fast_mul #(
assign pcpi_ready = active[EXTRA_MUL_FFS ? 3 : 1];
`ifdef RISCV_FORMAL_ALTOPS
assign pcpi_rd =
instr_mul ? (pcpi_rs1 + pcpi_rs2) ^ 32'h4d554c01 :
instr_mulh ? (pcpi_rs1 + pcpi_rs2) ^ 32'h4d554c02 :
instr_mulhsu ? (pcpi_rs1 - pcpi_rs2) ^ 32'h4d554c03 :
instr_mulhu ? (pcpi_rs1 + pcpi_rs2) ^ 32'h4d554c04 : 1'bx;
instr_mul ? (pcpi_rs1 + pcpi_rs2) ^ 32'h5876063e :
instr_mulh ? (pcpi_rs1 + pcpi_rs2) ^ 32'hf6583fb7 :
instr_mulhsu ? (pcpi_rs1 - pcpi_rs2) ^ 32'hecfbe137 :
instr_mulhu ? (pcpi_rs1 + pcpi_rs2) ^ 32'h949ce5e8 : 1'bx;
`else
assign pcpi_rd = shift_out ? (EXTRA_MUL_FFS ? rd_q : rd) >> 32 : (EXTRA_MUL_FFS ? rd_q : rd);
`endif
@ -2411,10 +2411,10 @@ module picorv32_pcpi_div (
pcpi_wr <= 1;
`ifdef RISCV_FORMAL_ALTOPS
case (1)
instr_div: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h44495601;
instr_divu: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h44495602;
instr_rem: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h52454D01;
instr_remu: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h52454D02;
instr_div: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h7f8529ec;
instr_divu: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h10e8fd70;
instr_rem: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h8da68fa5;
instr_remu: pcpi_rd <= (pcpi_rs1 - pcpi_rs2) ^ 32'h3138d0e1;
endcase
`else
if (instr_div || instr_divu)