watchpoint facility for ptx debugging

[git-p4: depot-paths = "//depot/gpgpu_sim_research/fermi/distribution/": change = 7160]

1 files changed, 66 insertions, 0 deletions

diff --git a/src/debug.h b/src/debug.h
new file mode 100644
index 0000000..463780a
--- /dev/null
+++ b/src/debug.h
@@ -0,0 +1,66 @@
+#ifndef PTX_DEBUG_INCLUDED
+#define PTX_DEBUG_INCLUDED
+
+#include "abstract_hardware_model.h"
+
+#include <string>
+
+class brk_pt {
+public:
+   brk_pt() { m_valid=false; }
+   brk_pt( const char *fileline, unsigned uid )
+   {
+      m_valid = true;
+      m_watch = false;
+      m_fileline = std::string(fileline);
+      m_thread_uid=uid;
+   }
+   brk_pt( unsigned addr, unsigned value )
+   {
+      m_valid = true;
+      m_watch = true;
+      m_addr = addr;
+      m_value = value;
+   }
+
+   unsigned get_value() const { return m_value; }
+   addr_t get_addr() const { return m_addr; }
+   bool is_valid() const { return m_valid; }
+   bool is_watchpoint() const { return m_watch; }
+   bool is_equal( const std::string &fileline, unsigned uid ) const
+   {
+      if( m_watch ) 
+         return false; 
+      if( (m_thread_uid != (unsigned)-1) && (uid != m_thread_uid) ) 
+         return false;
+      return m_fileline == fileline;
+   }
+   std::string location() const
+   {
+      char buffer[1024];
+      sprintf(buffer,"%s thread uid = %u", m_fileline.c_str(), m_thread_uid);
+      return buffer;
+   }
+
+   unsigned set_value( unsigned val ) { return m_value=val; }
+private:
+   bool         m_valid;
+   bool         m_watch;
+
+   // break point
+   std::string  m_fileline;
+   unsigned     m_thread_uid;
+
+   // watch point
+   unsigned     m_addr;
+   unsigned     m_value;
+};
+
+class ptx_thread_info;
+class ptx_instruction;
+bool thread_at_brkpt( void *ptx_thd_info, const struct brk_pt &b );
+unsigned read_location( addr_t addr );
+void hit_watchpoint( unsigned watchpoint_num, ptx_thread_info *thd, const ptx_instruction *pI );
+void gpgpu_debug();
+
+#endif