Measure Coverage [Simulator] [E20 [RX71M, RX65x, and RX64M Groups]]

2.15 Measure Coverage [Simulator] [E20 [RX71M, RX65x, and RX64M Groups]]

This section describes coverage measurements that are conducted using the coverage facility.

There are several kinds of coverage measurement methods. Of these, CS+ performs, in areas designated below, a code coverage measurement of fetch-related operations on source lines and functions (C0 coverage) and a data coverage measurement of access-related operations on variables.

The areas in which CS+ performs coverage measurements are as follows:

Table 2.17

Subject Areas of Coverage Measurements

Debug Tool	Subject area
Simulator	Internal ROM/RAM, emulation ROM/RAM
E20 [RX71M, RX65x, and RX64M Groups]	Any desired area (up to four areas in 4-Mbyte units)

Remark

C0 coverage refers to an instruction coverage rate (statement coverage).
For example, if all instructions (statements) in code are executed at least once, then C0 = 100%.

Caution 1.

In the E20 [RX71M, RX65x, and RX64M Groups], this function cannot be used together with the trace function or real-time RAM monitor function.

Caution 2.

In the E20 [RX71M, RX65x, and RX64M Groups], data coverage cannot be measured.

Caution 3.

In the E20 (JTAG) [RX71M, RX65x, and RX64M Group], if you connect the emulator by using hot plug-in, the coverage measurement function is not available.
If you use hot plug-in to connect the emulator, please select [No] for the [Use code coverage function] property in the [Coverage] [E20 [RX71M, RX65x, and RX64M Groups]] category on the [Debug Tool Settings] tab on the Property panel.

Caution 4.

In the E20 (JTAG) [RX71M, RX65x, and RX64M Group], when the error message "The system was reset." is displayed during program execution, coverage from the start of the program to the system reset will not have been measured.