Implement stall cycles counter and view of CPU cycles counter.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

2 files changed, 12 insertions, 0 deletions

diff --git a/qtmips_machine/core.cpp b/qtmips_machine/core.cpp
index 9e285a4..88b2fe2 100644
--- a/qtmips_machine/core.cpp
+++ b/qtmips_machine/core.cpp
@@ -43,6 +43,7 @@ Core::Core(Registers *regs, MemoryAccess *mem_program, MemoryAccess *mem_data,
            unsigned int min_cache_row_size, Cop0State *cop0state) :
            ex_handlers(), hw_breaks() {
     cycle_c = 0;
+    stall_c = 0;
     this->regs = regs;
     this->cop0state = cop0state;
     this->mem_program = mem_program;
@@ -61,11 +62,13 @@ Core::Core(Registers *regs, MemoryAccess *mem_program, MemoryAccess *mem_data,
 
 void Core::step(bool skip_break) {
     cycle_c++;
+    emit cycle_c_value(cycle_c);
     do_step(skip_break);
 }
 
 void Core::reset() {
     cycle_c = 0;
+    stall_c = 0;
     do_reset();
 }
 
@@ -903,6 +906,10 @@ void CorePipelined::do_step(bool skip_break) {
         }
         // emit instruction_decoded(dt_d.inst, dt_d.inst_addr, dt_d.excause, dt_d.is_valid);
     }
+    if (stall || dt_d.stop_if) {
+        stall_c++;
+        emit stall_c_value(stall_c);
+    }
 }
 
 void CorePipelined::do_reset() {
diff --git a/qtmips_machine/core.h b/qtmips_machine/core.h
index 8672850..ff589c5 100644
--- a/qtmips_machine/core.h
+++ b/qtmips_machine/core.h
@@ -165,6 +165,9 @@ signals:
     void hu_stall_value(std::uint32_t);
     void branch_forward_value(std::uint32_t);
 
+    void cycle_c_value(std::uint32_t);
+    void stall_c_value(std::uint32_t);
+
     void stop_on_exception_reached();
 
 protected:
@@ -273,6 +276,8 @@ protected:
     void dtExecuteInit(struct dtExecute &dt);
     void dtMemoryInit(struct dtMemory &dt);
 
+protected:
+    unsigned int stall_c;
 private:
     struct hwBreak{
         hwBreak(std::uint32_t addr);