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RENESAS TOOL NEWS on March 16, 2006: RSO-E8-060316D
A Note on Using
the Emulator Software Packages
for the E8 and the E7 Emulator |
Please take note of the following problem in using the emulator software
packages for the E8 and the E7 on-chip debugging emulator:
- On referencing function pointers using the tooltip watch function in
the Source or the Watch window
- Products and Versions Concerned
- Emulator software V.1.00 Release 00--V.2.06 Release 02 for the E8
- Emulator software V.2.0.01--V.3.00 Release 01 for the E7
- Description
When IEEE695-formatted object files that contain information on pointers
to functions taking no arguments are loaded into the emulator, and any
of this type of pointer is referenced using the tooltip watch function
in the Source or the Watch window, the High-performance Embedded
Workshop is abnormally terminated.
- Conditions
This problem occurs if the following conditions are all satisfied:
| (1) |
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A member of the M16C MCU family is targeted for debugging. |
| (2) |
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The emulator debugger included in either of the products concerned is used.
Note, however, that if you are using the simulator debugger that is
bundled with the evaluation version of the C compiler included in
the products concerned, the problem does not occur. |
| (3) |
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An IEEE695-formatted object file is loaded into the emulator. |
| (4) |
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In the source code, a pointer pointing to a function taking no
arguments is declared. |
Example: sample.c
----------------------------------------------------------------
void(*pFunc)();
----------------------------------------------------------------
- Workarounds
| 4.1 |
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In the Source Window
There are no ways of circumventing this problem. So invalidate
the tooltip watch function by going through the following steps:
| (1) |
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In the High-performance Embedded Workshop, open the Setup
menu and select the Options command. You see the Options
dialog box. |
| (2) |
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Click the Editor tab; then uncheck the Enable tooltip watch check
box. |
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| 4.2 |
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In the Watch Window
Register function pointers with the Watch window and reference them
by going through the following steps:
| (1) |
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Click the Add Watch button on the tool bar in the Watch window,
or select the Add Watch command in the pop-up menu that is
opened by right-clicking an unoccupied area in the Watch window.
You see the Add Watch dialog box. |
| (2) |
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Convert the type of a function pointer you want to reference to
an arbitrary type and then enter it into the Variable or expression
text box. The examples of type-casting the pointer in Example above
are as follows:
Example 1. (int)pFunc
Example 2. (int*)pFunc |
| (3) |
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Click the OK button. The value of the registered function pointer
is presented in the Watch window. |
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- Schedule of Fixing the Problem
We plan to fix the problem in the next release of the products. They are
as follows:
- E8 emulator software V.2.07 Release 00
- E7 emulator software V.3.01 Release 00
Now we are going to release them at the beginning of this April and
will inform you of the release date on our tool news when it is fixed.
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