A question about the data type of rtems

[PowerMan]

1. In which file "uint32_t" is defined ?

2. Would "int" be different between xxx-rtems-gcc ?
  for example, "int" in arm-rtems-gcc is 32-bit,
   "int" in avr-rtems-gcc is 16-bit.
(Or
"short" is fixed 16-bit,
"int" is fixed 32-bit,
"long" is 32-bit or 64-bit
(that is in linux kernel))

3. If so, I found some driver uses "int",
Would that make some problems to portability?
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