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Check NPC for validity before using it

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This commit is contained in:
Florian Zaruba 2017-08-17 19:08:06 +02:00
parent 25da717d83
commit 87b9831240
1 changed files with 8 additions and 2 deletions
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10
src/debug_unit.sv
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@ -149,8 +149,14 @@ module debug_unit (
DBG_IE: rdata_n = dbg_ie_q;
DBG_CAUSE: rdata_n = dbg_cause_q;
DBG_NPC: begin
if (debug_halted_o)
rdata_n = commit_instr_i.pc;
if (debug_halted_o) begin
if (commit_instr_i.valid)
rdata_n = commit_instr_i.pc;
else
rdata_n = 64'hdeadbeefdeadbeef;
// TODO: Breakpoint
end
// if we came from reset - output the boot address
if (reset_q)
rdata_n = boot_addr_i;