Alan Modra eb6dce11fc gas: tc-tic54x.c hash tables
Cleaning up the subsym_hash memory is a real pain.  Keys and values
entered into the table are quite diverse.  In some cases the key is
allocated and thus needs to be freed, in others the key is a const
string.  Values are similar, and in some cases not even a string.
Tidy this by inserting a new subsym_ent_t that describes key/value
type.  This meant the math_hash table was no longer needed.  The patch
also tidies how math functions are called, those that are supposed to
return int now no longer return their value in a float.

	* config/tc-tic54x.c (math_hash): Delete.
	(subsym_proc_entry): Move earlier, make proc a union, merge with..
	(math_proc_entry): ..this.  Delete type.
	(math_procs): Merge into subsym_procs.
	(subsym_ent_t): New.  Use this type in subsym_hash..
	(stag_add_field_symbols, tic54x_var, tic54x_macro_info): ..here..
	(md_begin, subsym_create_or_replace, subsym_lookup): ..and here..
	(subsym_substitute): ..and here.  Adjust subsym_proc_entry
	function calls.  Free replacement when not returned.
	(subsym_get_arg): Adjust subsym_lookup.
	(free_subsym_ent, subsym_htab_create ): New functions, use when
	creating subsym_hash.
	(free_local_label_ent, local_label_htab_create): Similarly.
	(tic54x_remove_local_label): Delete.
	(tic54x_clear_local_labels): Simplify.
	(tic54x_asg): Use notes obstack to dup strings.
	(tic54x_eval): Likewise.
	(subsym_ismember): Likewise.
	(math_cvi, math_int, math_sgn): Return int.
	(tic54x_macro_start): Decrement macro_level before calling as_fatal.
	(tic54x_md_end): New function.
	* config/tc-tic54h.c (tic54x_md_end): Declare.
	(md_end): Define.
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.
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