tree 53797e395c72382633b35ab833a2c80fc4b27193
parent d3c0343ee8a8f75338a72b7c641c39e46dbe1048
author Michael Walsh <micwalsh@us.ibm.com> 1527879575 -0500
committer Michael Walsh <micwalsh@us.ibm.com> 1528139622 -0500

get_arg_name support for negative arg_num, etc.

There are a number of changes in this commit:

- get_arg_name:  Added support for arg_num of 0 (the name of the
  function) and for negative arg_nums (the lvalues -n through -1).
- sprint_varx:  Improvements to printing hex numbers.
- New functions:
  - get_line_indent: For use by get_arg_name.
  - digit_length_in_bits: Constant function.
  - word_length_in_digits: Constant function.
  - get_req_num_hex_digits: For use by sprint_varx in printing hex.
  - dft_num_hex_digits: Constant function.
  - get_stack_var: Search the call stack for a variable.

Change-Id: I8e771a28667a8e25dd3f03c57f157d87c14e5b0e
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>