gdb and binutils branch master updated. 403cb6b138c38faf72f7abc034db3505b9bdb82f

gdb and binutils branch master updated. 403cb6b138c38faf72f7abc034db3505b9bdb82f

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=403cb6b138c38faf72f7abc034db3505b9bdb82f

commit 403cb6b138c38faf72f7abc034db3505b9bdb82f
Author: Joel Brobecker <brobecker@adacore.com>
Date:   Mon Nov 11 09:21:44 2013 +0400

    GDB/MI: Add new "--language LANG" command option.
    
    Frontend sometimes need to evaluate expressions that are
    language-specific. For instance, Eclipse uses the following
    expression to determine the size of an address on the target:
    
        -data-evaluate-expression "sizeof (void*)"
    
    Unfortunately, if the main of the program being debugged is not C,
    this may not work. For instance, if the main is in Ada, you get...
    
        -data-evaluate-expression "sizeof (void*)"
        ^error,msg="No definition of \"sizeof\" in current context."
    
    ... and apparently decides to stop the debugging session as a result.
    The  recommendation sent was to specifically set the language to C
    before trying to evaluate the expression.  Something such as:
    
        1. save current language
        2. set language c
        3. -data-evaluate-expression "sizeof (void*)"
        4. Restore language
    
    This has the same disadvantages as the ones outlined in the "Context
    Management" section of the GDB/MI documentation regarding setting
    the current thread or the current frame, thus recommending the use of
    general command-line switches such as --frame, or --thread instead.
    
    This patch follows the same steps for the language, adding a similar
    new command option: --language LANG. Example of use:
    
        -data-evaluate-expression --language c "sizeof (void*)"
        ^done,value="4"
    
    gdb/ChangeLog:
    
            * mi/mi-parse.h (struct mi_parse) <language>: New field.
            * mi/mi-main.c (mi_cmd_execute): Temporarily set language to
            PARSE->LANGUAGE during command execution, if set.
            * mi/mi-parse.c: Add "language.h" #include.
            (mi_parse): Add parsing of "--language" command option.
    
            * NEWS: Add entry mentioning the new "--language" command option.
    
    gdb/testsuite/ChangeLog:
    
            * gdb.mi/mi-language.exp: New file.
    
    gdb/doc/ChangeLog:
    
            * gdb.texinfo (Show): Add xref anchor for "show language" command.
            (Context management): Place current subsection text into its own
            subsubsection.  Add new subsubsection describing the "--language"
            command option.

-----------------------------------------------------------------------

Summary of changes:
 gdb/ChangeLog                        |   10 +++++
 gdb/NEWS                             |    2 +
 gdb/doc/ChangeLog                    |    7 ++++
 gdb/doc/gdb.texinfo                  |   22 ++++++++++++
 gdb/mi/mi-main.c                     |    7 ++++
 gdb/mi/mi-parse.c                    |   25 +++++++++++++-
 gdb/mi/mi-parse.h                    |    4 ++
 gdb/testsuite/ChangeLog              |    4 ++
 gdb/testsuite/gdb.mi/mi-language.exp |   62 ++++++++++++++++++++++++++++++++++
 9 files changed, 142 insertions(+), 1 deletions(-)
 create mode 100644 gdb/testsuite/gdb.mi/mi-language.exp


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