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Torbjörn SVENSSON d72ba177c8 gdb: dwarf2 generic implementation for caching function data
When there is no dwarf2 data for a register, a function can be called
to provide the value of this register.  In some situations, it might
not be trivial to determine the value to return and it would cause a
performance bottleneck to do the computation each time.

This patch allows the called function to have a "cache" object that it
can use to store some metadata between calls to reduce the performance
impact of the complex logic.

The cache object is unique for each function and frame, so if there are
more than one function pointer stored in the dwarf2_frame_cache->reg
array, then the appropriate pointer will be supplied (the type is not
known by the dwarf2 implementation).

dwarf2_frame_get_fn_data can be used to retrieve the function unique
cache object.
dwarf2_frame_allocate_fn_data can be used to allocate and retrieve the
function unique cache object.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Signed-off-by: Yvan Roux <yvan.roux@foss.st.com>
2023-01-25 21:04:40 +01:00
bfd Automatic date update in version.in 2023-01-25 00:00:11 +00:00
binutils Updated Swedish translation for the binutils sub-directory 2023-01-23 10:53:12 +00:00
config Merge config/picflag.m4 from gcc 2023-01-04 13:23:54 +10:30
contrib Import mklog.py from gcc repo 2020-09-25 10:24:44 -04:00
cpu Add markers for 2.40 branch 2022-12-31 12:05:28 +00:00
elfcpp Update year range in copyright notice of binutils files 2023-01-01 21:50:11 +10:30
etc Update year range in gprofng copyright notices 2023-01-01 23:26:30 +10:30
gas Add support for secidx relocations to aarch64-w64-mingw32 2023-01-23 20:07:30 +00:00
gdb gdb: dwarf2 generic implementation for caching function data 2023-01-25 21:04:40 +01:00
gdbserver Fix 'make TAGS' in gdbserver 2023-01-18 11:12:20 -07:00
gdbsupport Avoid submitting empty tasks in parallel_for_each 2023-01-17 07:03:26 -07:00
gnulib Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gold Use __func__ rather than __FUNCTION__ 2023-01-12 17:20:21 +10:30
gprof Updated transaltions for the gprof and binutils sub-directories 2023-01-09 10:24:13 +00:00
gprofng gprofng: PR29521 [docs] man pages are not in the release tarball 2023-01-24 11:54:37 -08:00
include sim: info: convert verbose field to a bool 2023-01-18 20:47:55 -05:00
intl egrep in binutils 2022-09-28 13:37:31 +09:30
ld i386: Pass -Wl,--no-as-needed to compiler as needed 2023-01-25 08:57:57 -08:00
libbacktrace Ensure that libbacktrace/allocfail.sh is not deleted when creating release tarballs. 2023-01-12 13:39:03 +00:00
libctf libctf: update regexp to allow makeinfo to build document 2023-01-16 23:18:38 +08:00
libdecnumber Merge config/ changes from GCC, to enable DFP on AArch64 2022-05-24 10:47:29 +01:00
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libsframe libsframe/doc: fix some warnings 2023-01-24 10:08:14 -08:00
opcodes x86: split i386-gen's opcode hash entry struct 2023-01-20 10:18:40 +01:00
readline gdb/readline: fix extra 'quit' message problem 2022-05-07 10:49:27 +01:00
sim sim: info: convert verbose field to a bool 2023-01-18 20:47:55 -05:00
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compile
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config.guess Update the config.guess and config.sub files from the master repository and regenerate files. 2022-01-17 16:21:22 +00:00
config.rpath
config.sub Update the config.guess and config.sub files from the master repository and regenerate files. 2022-01-17 16:21:22 +00:00
configure configure: remove dependencies on gmp and mpfr when gdb is disabled 2023-01-06 09:32:07 +01:00
configure.ac configure: remove dependencies on gmp and mpfr when gdb is disabled 2023-01-06 09:32:07 +01:00
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depcomp
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install-sh
libtool.m4 libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
lt~obsolete.m4
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ltmain.sh
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ltsugar.m4
ltversion.m4
MAINTAINERS MAINTAINERS: Update path to readline config.{sub,guess} files 2021-05-24 18:11:49 +02:00
Makefile.def toplevel: Makefile.def: add install-strip dependency on libsframe 2023-01-18 23:17:49 -08:00
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setup.com
src-release.sh src-release.sh: Fix gdb source tarball build failure due to libsframe 2022-11-30 07:32:58 +04:00
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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.