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Put flush to sequential process

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This commit is contained in:
Florian Zaruba 2017-05-12 14:54:21 +02:00
parent 03cc04f96a
commit b3173ab6f2
1 changed files with 7 additions and 9 deletions
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16
src/scoreboard.sv
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@ -209,13 +209,6 @@ always_comb begin : push_instruction_and_wb
if (flush_unissued_instr_i) begin
top_pointer_n = issue_pointer_q;
end
// flush signal, e.g.: flush everything we need to backtrack after an exception
if (flush_i) begin
for (int i = 0; i < NR_ENTRIES; i++) begin
mem_n[i] = {$bits(scoreboard_entry){1'b0}};
end
end
end
// issue instruction: advance the issue pointer
@ -282,13 +275,18 @@ always_ff @(posedge clk_i or negedge rst_ni) begin : sequential
commit_pointer_q <= '{default: 0};
top_pointer_q <= '{default: 0};
top_pointer_qq <= '{default: 0};
mem_q <= '{default: 0};
for (int i = 0; i < NR_ENTRIES; i++) begin
mem_q[i] <= {$bits(scoreboard_entry){1'b0}};
end
end else if (flush_i) begin // reset pointers on flush
// flush signal, e.g.: flush everything we need to backtrack after an exception
issue_pointer_q <= '{default: 0};
commit_pointer_q <= '{default: 0};
top_pointer_q <= '{default: 0};
top_pointer_qq <= '{default: 0};
mem_q <= '{default: 0};
for (int i = 0; i < NR_ENTRIES; i++) begin
mem_q[i] <= {$bits(scoreboard_entry){1'b0}};
end
end else begin
issue_pointer_q <= issue_pointer_n;
commit_pointer_q <= commit_pointer_n;