Stall decode after an instruction with stores until the stores are done.

1 files changed, 7 insertions, 0 deletions

diff --git a/uarch/core.h b/uarch/core.h
index b53a205..21725b3 100644
--- a/uarch/core.h
+++ b/uarch/core.h
@@ -17,6 +17,7 @@ struct restart {
     infra::transaction tr;
     unsigned int new_pc;
     bool interrupt;
+    unsigned int stores_sent = 0;
 };
 
 struct fetch_bundle {
@@ -57,6 +58,9 @@ struct decode_stage : public infra::sim {
     unsigned int pc;
     std::uint64_t icount;
 
+    unsigned int speculative_stores_sent = 0;
+    unsigned int stores_done = 0;
+
     decode_stage(core &c);
 
     void clock();
@@ -77,6 +81,8 @@ struct exec_stage : public infra::sim {
 
     unsigned int gen = 0;
 
+    unsigned int stores_sent = 0;
+
     unsigned int acc;
     unsigned int link;
     unsigned int mq;
@@ -108,6 +114,7 @@ struct core {
 
     infra::port<memory::dram::command> decode_mem_commandp;
     infra::port<memory::dram::response> decode_mem_responsep;
+    infra::port<memory::dram::response> decode_store_completep;
     infra::port<inst_bundle> decode_to_exec_instp;
 
     infra::port<inst_bundle> indir_instp;