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Hui Li 886ebc2b1f gdb: LoongArch: Add basic process record/replay support
GDB provides a special process record and replay target that can
record a log of the process execution, and replay it later with
both forward and reverse execution commands. This patch adds the
basic support of process record and replay on LoongArch, it allows
users to debug basic LoongArch instructions and provides reverse
debugging support.

Here is a simple example on LoongArch:

$ cat test.c
int a = 0;
int main()
  {
    a = 1;
    a = 2;
    return 0;
  }
$ gdb test
...
(gdb) start
...
Temporary breakpoint 1, main () at test.c:4
4	    a = 1;
(gdb) record
(gdb) p a
$1 = 0
(gdb) n
5	    a = 2;
(gdb) n
6	    return 0;
(gdb) p a
$2 = 2
(gdb) rn
5	    a = 2;
(gdb) rn

Reached end of recorded history; stopping.
Backward execution from here not possible.
main () at test.c:4
4	    a = 1;
(gdb) p a
$3 = 0
(gdb) record stop
Process record is stopped and all execution logs are deleted.
(gdb) c
Continuing.
[Inferior 1 (process 129178) exited normally]

Signed-off-by: Hui Li <lihui@loongson.cn>
Approved-By: Guinevere Larsen <guinevere@redhat.com> (record-full)
Approved-By: Tom Tromey <tom@tromey.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2024-11-25 19:15:02 +08:00
bfd Automatic date update in version.in 2024-11-25 00:00:46 +00:00
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contrib
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gas RISC-V: Support SiFive extensions: xsfvqmaccdod, xsfvqmaccqoq and xsfvfnrclipxfqf 2024-11-22 09:56:54 +08:00
gdb gdb: LoongArch: Add basic process record/replay support 2024-11-25 19:15:02 +08:00
gdbserver [gdb/contrib] Add two rules in common-misspellings.txt 2024-11-23 12:20:34 +01:00
gdbsupport [gdbsupport] Rerun autoreconf -f 2024-11-23 12:40:36 +01:00
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ld ld/PE: Handle MS style import libraries for files named *.exe too 2024-11-22 12:39:42 +02:00
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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.