User`s manual

SuperH Family E10A-USB Emulator for Multi-core Microcomputers Section 2 Emulator Functions

R20UT0363EJ0500 Rev. 5.00 Page 11 of 296

Aug 10, 2012

When a specific instruction is executed, the PC value at execution and the contents of one

general register are acquired by trace. Describe the Trace(x) function (x is a variable name) to

be compiled and linked beforehand. For details, refer to the SHC/C++ compiler manual.

When the load module is loaded on the emulator and a valid software trace function is

executed, the PC value that has executed the Trace(x) function, the variable for x, and the

source lines are displayed.

Note: The types of events acquired by a trace differ depending on the product. For details on the

specifications of each product, refer to the online help.

(2) Trace acquisition mode

The AUD trace function has the following modes to acquire a trace.

Table 2.2 shows the AUD trace acquisition mode that can be set in each trace function.

Table 2.2 AUD Trace Acquisition Mode

Type Mode Description

Continuous

trace occurs

Realtime trace When the trace information is being generated intensely that

the output from the AUD pin incapable of keeping up, the

CPU temporarily suspends the output of trace information.

Therefore, although the user program is run in real time, the

acquisition of some trace information might not be possible.

Non realtime

trace

When trace information is being generated so intensely that

the output from the AUD pin is incapable of keeping up, CPU

operations are temporarily suspended and the output of trace

information takes priority. In such cases, the realtime

characteristics of the user program are lost.

Trace buffer

full

Trace continue This function overwrites the latest trace information to store

the oldest trace information.

Trace stop After the trace buffer becomes full, the trace information is no

longer acquired. The user program is continuously executed.