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Hello every 1, I am calling certain functions from main and also passing few arguements to these functions. But the values of these arguements are gettting changed as soon as i enter the function . I increased the stack size but still it doesnt work. I am using CCS 2.1. Is it the bug in CCS or whats the pbm? Thanx in advance.... Regards, Vijay __________________________________ |
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Problems calling functions in CCS
Started by ●March 12, 2004
Reply by ●March 12, 20042004-03-12
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Check the
disassembly.. View the status of the register that is assigned to those
variables.. usually the arguments are passed as A4:A5, B4:B5, A6:A7, B6:B7... so
on respectively and register pairs are used only if reqd.. else data is passed
through the Even numbered registers..
Also give 2
cycle delay before u check the status..i.e. check the status after 2
instructions from the current one.... This may help you...
Hope this
helps...
Ganesh
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Reply by ●March 12, 20042004-03-12
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Vijay- Turn of all optimizations(if any) before you proceed on anyfurther debugging, -o3 has given few sleepless nights to me! Good Luck -Bhooshan >Check the disassembly.. View the status of the register that is assigned to those variables.. >usually the arguments are passed as A4:A5, B4:B5, A6:A7, B6:B7... so on respectively and >register pairs are used only if reqd.. else data is passed through the Even numbered >registers...Also give 2 cycle delay before u check the status..i.e. check the status after 2 >instructions from the current one.... This may help you... > Hello every 1, > > I am calling certain functions from main and also > passing few arguements to these functions. But the > values of these arguements are gettting changed as > soon as i enter the function . > I increased the stack size but still it doesnt work. > I am using CCS 2.1. Is it the bug in CCS or whats the > pbm? > > Thanx in advance.... > > Regards, > VijayEasiest Money Transfer to India . Send Money To 6000 Indian Towns. Easiest Way To Send Money Home! |
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Reply by ●March 13, 20042004-03-13
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Hi Bhooshan and Ganesh, Well firstly the compiler should take care of the arguments being passed to the functions .Since the values passed to the function are stored in registers ,It should avoid modifying those registers . I am sending only 1 value to the function which will be stored in A4 on function call . Now in the function after few instructions are executed A4s value is changing y is that so. Also I am not using ne sort of optimizations... So what I am doing rt. now is as soon as i enter the function i am storing the argument in another local variable and getting the things work, which i suppose is not the right way. So what shall I do to avoid this??? Thanx in advance Regards, Vijay --- Bhooshan iyer <> wrote: --------------------------------- Vijay- Turn of all optimizations(if any) before you proceed on anyfurther debugging, -o3 has given few sleepless nights to me! Good Luck -Bhooshan >Check the disassembly.. View the status of the register that is assigned to those variables.. >usually the arguments are passed as A4:A5, B4:B5, A6:A7, B6:B7... so on respectively and >register pairs are used only if reqd.. else data is passed through the Even numbered >registers...Also give 2 cycle delay before u check the status..i.e. check the status after 2 >instructions from the current one.... This may help you... > Hello every 1, > > I am calling certain functions from main and also > passing few arguements to these functions. But the > values of these arguements are gettting changed as > soon as i enter the function . > I increased the stack size but still it doesnt work. > I am using CCS 2.1. Is it the bug in CCS or whats the > pbm? > > Thanx in advance.... > > Regards, > Vijay --------------------------------- Easiest Money Transfer to India . Send Money To 6000 Indian Towns. Easiest Way To Send Money Home! _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: Send an email to To Post: Send an email to To Leave: Send an email to Archives: http://www.yahoogroups.com/group/c6x Other Groups: http://www.dsprelated.com --------------------------------- Yahoo! Groups Links To __________________________________ |
Reply by ●March 14, 20042004-03-14
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Vijay- Can you post your code? -Bhooshan
>Hi Bhooshan and Ganesh, > > Well firstly the compiler should take care of the >arguments being passed to the functions .Since the >values passed to the function are stored in registers >,It should avoid modifying those registers . >I am sending only 1 value to the function which will >be stored in A4 on function call . Now in the >function after few instructions are executed A4s value >is changing y is that so. > > Also I am not using ne sort of optimizations... > > So what I am doing rt. now is as soon as i enter the >function i am storing the argument in another local >variable and getting the things work, which i suppose >is not the right way. > >So what shall I do to avoid this??? > >Thanx in advance > >Regards, >Vijay > > > >--- Bhooshan iyer wrote: > >--------------------------------- > > >Vijay- > > Turn of all optimizations(if any) before you >proceed on anyfurther debugging, -o3 has given few >sleepless nights to me! Good Luck > >-Bhooshan > > >Check the disassembly.. View the status of the >register that is assigned to those variables.. > >usually the arguments are passed as A4:A5, B4:B5, >A6:A7, B6:B7... so on respectively and >register pairs >are used only if reqd.. else data is passed through >the Even numbered >registers...Also give 2 cycle delay >before u check the status..i.e. check the status after >2 >instructions from the current one.... This may help >you... > > > > > Hello every 1, > > > > I am calling certain functions from main and also > > > passing few arguements to these functions. But the > > > values of these arguements are gettting changed as > > > soon as i enter the function . > > I increased the stack size but still it doesnt >work. > > I am using CCS 2.1. Is it the bug in CCS or whats >the > > pbm? > > > > Thanx in advance.... > > > > Regards, > > Vijay > > > > >--------------------------------- >Easiest Money Transfer to India . Send Money To 6000 >Indian Towns. Easiest Way To Send Money Home! > >_____________________________________ >Note: If you do a simple "reply" with your email >client, only the author of this message will receive >your answer. You need to do a "reply all" if you want >your answer to be distributed to the entire group. > >_____________________________________ >About this discussion group: > >To Join: Send an email to >c...@yahoogroups.com > >To Post: Send an email to c...@yahoogroups.com > >To Leave: Send an email to >c...@yahoogroups.com > >Archives: http://www.yahoogroups.com/group/c6x > >Other Groups: http://www.dsprelated.com > > > > >--------------------------------- >Yahoo! Groups Links > > To > > > >__________________________________ > > > > >_____________________________________ >Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. > >_____________________________________ >About this discussion group: > >To Join: Send an email to c...@yahoogroups.com > >To Post: Send an email to c...@yahoogroups.com > >To Leave: Send an email to c...@yahoogroups.com > >Archives: http://www.yahoogroups.com/group/c6x > >Other Groups: http://www.dsprelated.com > >Yahoo! Groups Links > ><*> To visit your group on the web, go to: > http://groups.yahoo.com/group/c6x/ > ><*> To unsubscribe from this group, send an email to: > c...@yahoogroups.com > ><*> > >Take a loan. Win great prizes! Handsome prizes to be won! Take a loan win TV, Fridge many more prizes ! |
