problem relating build of modified cross-compiler

[piyush mishra]

hi all,
  while building a gcc cross compiler i am trying to restrict the number of 
registers available to the compiler. to achieve this i modifed the machine 
header file to reduce the number of GPRs and FPRs and re-allocate them for 
various purposes such as SP, FP etc. but this generates an 'internal 
compiler error: program cc1 got fatal signal 11" error message during 
complitation. what other changes do i need to make? i have to do this since 
-ffixed-reg option does not guarantee aviodance of those registers by gcc.

   another related question is about the macro reg_class_contents. i was 
unable to follow its description to undertand the operation. why more than 1 
entry per register-class?

  sorry if there querries are oft-repeated.

thanks,
piyush

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