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mirror of git://sourceware.org/git/newlib-cygwin.git synced 2025-01-19 12:59:21 +08:00
Joseph Myers e6459123e4 Avoid .eh_frame in ARM newlib.
ARM newlib has various strcmp implementations that use .cfi_*
directives to generate unwind information.

The effect of this is that the generated objects contain .eh_frame
sections.  However, ARM uses its own unwind info format, not
.eh_frame, which is generated by ARM-specific directives, not .cfi_*.
The .eh_frame sections are useless, but also not removed by strip and
may be loaded into memory at runtime.

This patch fixes this by using .cfi_sections .debug_frame (as in
glibc) so that the directives generate .debug_frame instead.
.debug_frame is useful for the debugger, can be removed by strip, and
is not loaded into memory at runtime.

	* libc/machine/arm/strcmp-arm-tiny.S: Use .cfi_sections
	.debug_frame.
	* libc/machine/arm/strcmp-armv4.S: Likewise.
	* libc/machine/arm/strcmp-armv4t.S: Likewise.
	* libc/machine/arm/strcmp-armv6.S: Likewise.
	* libc/machine/arm/strcmp-armv6m.S: Likewise.
	* libc/machine/arm/strcmp-armv7.S: Likewise.
	* libc/machine/arm/strcmp-armv7m.S: Likewise.
2015-11-12 12:09:24 +00:00
2015-11-12 12:09:24 +00:00
2015-03-09 20:53:11 +01:00
2010-01-09 21:11:32 +00:00
2014-02-05 13:17:47 +00:00
2010-01-09 21:11:32 +00:00
2010-01-09 21:11:32 +00:00

		   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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