Dear Prahlad,


I never stated that Keil routines are not reentrant. in my PC programming days i faced similar problem. what i've said is these call may include a call to external routine which MUST be reentrant. and the very next post i adviced to verify it with generated asm code.

i've verified that operators '+/-' are implemented with inline code while for '*/' the compiler generated lcall to some external routines with register parameter passing. all of these register were pushed by there direct address (ar0-ar7) in the ISR. so here is no problem. but if these routine dependant on some global variables, i've no idea.


Abhishek