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vijay korde
New User
Joined: 19 Feb 2010
Posts: 27
Location: India
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Hello,
I want to patch the value of CC at run time. Is there any command to do it? Please help.
Thank you,
VIjay |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| Patch ??? please explain, or does it have a hole in it that needs patching ? |
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vijay korde
New User
Joined: 19 Feb 2010
Posts: 27
Location: India
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Let me rephrase my statement.
While debugging code with Debug tool, if current CC is 2 and I want to forcefully make it to 0. What is the command to do it?
Thank you,
Vijay |
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don.leahy
Active Member
Joined: 06 Jul 2010
Posts: 765
Location: Whitby, ON, Canada
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| DT allows you to enter MOVE statements on the command line. Did you try: MOVE ZEROS TO RETURN-CODE ? |
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vijay korde
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Joined: 19 Feb 2010
Posts: 27
Location: India
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| I tried it but not working. I am debugging assembler code. I also wants to change the value of CC to 1, 2, or 3. |
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Akatsukami
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Joined: 03 Oct 2009
Posts: 1788
Location: Bloomington, IL
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| I am expert in neither HLASM not Debug Tool, but it doesn't seem intuitive that MOVE ZEROES TO RETURN-CODE would be efficacious. Have you tried modifying register 15 just before returning from the routine? |
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vijay korde
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Joined: 19 Feb 2010
Posts: 27
Location: India
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| Thank you Akatsukami. But I don't want to change the return code(RC) in R15. Rather I want to change the condition code(CC) that set in CLC instruction. |
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Bill Woodger
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Joined: 09 Mar 2011
Posts: 7309
Location: Inside the Matrix
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After a week you get to tell us what you really want?
Can't it be as simple as changing the values of what you are comparing to get the different CCs? |
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vijay korde
New User
Joined: 19 Feb 2010
Posts: 27
Location: India
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Condition code is the part of PSW. %CC is a debug tool variable.
We can modify PSW in Xpeditor. But how can we achieve it with IBM Debug tool? |
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vijay korde
New User
Joined: 19 Feb 2010
Posts: 27
Location: India
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Thank you Bill for your reply.
But I want to change the value of CC as we can do it in Xpeditor not the values of the comparison fields. |
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Bill Woodger
Moderator Emeritus
Joined: 09 Mar 2011
Posts: 7309
Location: Inside the Matrix
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Well, I've not used Debug Tool, but looking at the manual just now..
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8.0 Debug Tool variables
Debug Tool reserves several variables for its own information. These Debug Tool variable names begin with a percent sign (%), to distinguish them from program variables. You can access Debug Tool variables while testing programs in any supported language.
You can use all Debug Tool variables in expressions. Additionally, the variables %EPRn., %FPRn., %GPRn., and %LPRn. (representing the types of registers) can be modified [...]
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%CC and %PSW exist and can be 2in expressions". Maybe they can't be modified, seems to be the implication from the list that can be.
Sorry I can't be more help. |
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vijay korde
New User
Joined: 19 Feb 2010
Posts: 27
Location: India
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| Thank you Bill. |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello,
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| But I want to change the value of CC as we can do it in Xpeditor not the values of the comparison fields. |
Then you need to convince your management that they need to pay for Xpeditor. . .
Suggest you concentrate on the way the tools you have work and not on how some other tools do something similar. This will be quite frustrating  |
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