Simulation Debug - 2.4 English

Debug functions are controlled via the DEBUG_FLAGS parameter. DEBUG_FLAGS is a 32-bit integer where every bit controls a debug function. There are also symbolic names defined for every debug function in header files.

Recommended: Declare DEBUG_FLAGS a single time in the test bench, and set the same value for both software and Verilog hardware model. For software, use the API function cam_arg_set_debug_flags. For Verilog hardware, set the DEBUG_FLAGS parameter on the instance.

Table 1. Debug Flags
Debug Flag	Description
CAM_DEBUG_NO_ERROR_MSG	Disable printout of software error messages.
CAM_DEBUG_ARGS	Software echoes input arguments.
CAM_DEBUG_VERIFY_WR	Software immediately reads back written data from hardware for verification. Mismatching data is reported with error message.
CAM_DEBUG_VERIFY_SHADOW	'get_by_response' and 'get_by_key' operations read data from hardware and verifies software shadow data
CAM_DEBUG_VERBOSE_VERIFY	Enables printout of all verify operations, including correct compare. Applies to CAM_DEBUG_VERIFY_WR, CAM_DEBUG_VERIFY_SHADOW, and CAM_DEBUG_VERIFY_CONFIG.
CAM_DEBUG_SKIP_MEM_INIT	Skip memory initialization, useful to speedup Verilog simulation.
CAM_DEBUG_CONFIG	Enable printout of configuration parameters for both software and Verilog hardware simulation.
CAM_DEBUG_KEY_MASKING	Enable error check for the presence of key value '1' in masked (wildcarded) bit position. Applies stcam and tcam input arguments.
CAM_DEBUG_STATS	Enable statistics printout in the 'bcam_destroy' and 'stcam_destroy' functions.
CAM_DEBUG_SEGMENTS	Software prints segment map for virtualized bcam (vbcam).
CAM_DEBUG_SKIP_VERIFY_CONFIG	Skip verification of hardware/software configuration parameters.
CAM_DEBUG_SET_COVER	Software prints heap and set cover information for tcam.
CAM_DEBUG_CONFIG_ARGS	Software prints cam_arg values before creating the instance.
CAM_DEBUG_HW_WR	Verilog hardware prints write operations.
CAM_DEBUG_HW_RD	Verilog hardware prints read operations.
CAM_DEBUG_HW_LOOKUP	Verilog hardware prints lookup operations.