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This is a simple find / replace from "struct bound_minimal_symbol" to
"bound_minimal_symbol", to make things shorter and more consisten
througout. In some cases, move variable declarations where first used.
Change-Id: Ica4af11c4ac528aa842bfa49a7afe8fe77a66849
Reviewed-by: Keith Seitz <keiths@redhat.com>
Approved-By: Andrew Burgess <aburgess@redhat.com>
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C++ 11 has a built-in attribute for this, no need to use a compat macro.
Change-Id: I90e4220d26e8f3949d91761f8a13cd9c37da3875
Reviewed-by: Lancelot Six <lancelot.six@amd.com>
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Make the current program space reference bubble up one level.
Change-Id: I6ba6dc4a2cb188720cbb61b84ab5c954aac105c6
Approved-By: Tom Tromey <tom@tromey.com>
Reviewed-By: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
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Make the current program space reference bubble up one level.
Change-Id: I19c4fc2ca955f9c828ef426a077b43983865697b
Approved-By: Tom Tromey <tom@tromey.com>
Reviewed-By: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
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It is obvious that pspace is the same as current_program_space in these
cases, due to the set_current_program_space call just above. The rest
of the functions probably care about the current program space though,
so leave the set_cset_current_program_space calls there.
Change-Id: I3c300decbf2c2fe5f25aa7f697ebcb524432394f
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Rename to m_pspace, add getter. An objfile's pspace never changes, so
no setter is necessary.
Change-Id: If4dfb300cb90dc0fb9776ea704ff92baebb8f626
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This removes the LS_TOKEN_STOKEN macro from linespec.c.
Reviewed-by: Keith Seitz <keiths@redhat.com>
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This removes the LS_TOKEN_KEYWORD macro from linespec.c.
Reviewed-by: Keith Seitz <keiths@redhat.com>
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This removes the PARSER_STREAM macro from linespec.c.
Reviewed-by: Keith Seitz <keiths@redhat.com>
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This removes the PARSER_EXPLICIT macro from linespec.c.
Reviewed-by: Keith Seitz <keiths@redhat.com>
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This removes the PARSER_RESULT macro from linespec.c.
Reviewed-by: Keith Seitz <keiths@redhat.com>
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This removes the PARSER_STATE macro from linespec.c.
Reviewed-by: Keith Seitz <keiths@redhat.com>
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Now that defs.h, server.h and common-defs.h are included via the
`-include` option, it is no longer necessary for source files to include
them. Remove all the inclusions of these files I could find. Update
the generation scripts where relevant.
Change-Id: Ia026cff269c1b7ae7386dd3619bc9bb6a5332837
Approved-By: Pedro Alves <pedro@palves.net>
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This simplifies some symbol searches in linespec.c. In particular,
two separate searches here can now be combined into one, due to the
new use of flags.
Arguably the STRUCT_DOMAIN searches should perhaps not even be done.
Only C really has these, and C doesn't have member functions.
However, it seems relatively harmless -- and clearly compatible -- to
leave this in.
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This changes lookup_symbol and associated APIs to accept
domain_search_flags rather than a domain_enum.
Note that this introduces some new constants to Python and Guile. I
chose to break out the documentation patch for this, because the
internals here do not change until a later patch, and it seemed
simpler to patch the docs just once, rather than twice.
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This changes quick_symbol_functions::lookup_global_symbol_language to
accept domain_search_flags rather than just a domain_enum, and fixes
up the fallout.
To avoid introducing any regressions, any code passing VAR_DOMAIN now
uses SEARCH_VFT.
That is, no visible changes should result from this patch. However,
it sets the stage to refine some searches later on.
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This patch changes gdb to replace search_domain with
domain_search_flags everywhere. search_domain is removed.
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This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
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This patch contains work pulled from this previously proposed patch:
https://inbox.sourceware.org/gdb-patches/20210213220752.32581-2-lsix@lancelotsix.com/
But has been modified by me. Credit for the original idea and
implementation goes to Lancelot, any bugs in this new iteration belong
to me.
Consider the executable `/tmp/foo/my_exec', and if we assume `/tmp' is
empty other than the `foo' sub-directory, then currently within GDB,
if I type:
(gdb) file /tmp/f
and then hit TAB, GDB completes this to:
(gdb) file /tmp/foo/
notice that not only did GDB fill in the whole of `foo', but GDB also
added a trailing '/' character. This is done within readline when the
path that was just completed is a directory. However, if I instead
do:
(gdb) complete file /tmp/f
file /tmp/foo
I now see the completed directory name, but the trailing '/' is
missing. The reason is that, in this case, the completions are not
offered via readline, but are handled entirely within GDB, and so
readline never gets the chance to add the trailing '/' character.
The above patch added filename option support to GDB, which included
completion of the filename options. This initially suffered from the
same problem that I've outlined above, but the above patch proposed a
solution to this problem, but this solution only applied to filename
options (which have still not been added to GDB), and was mixed in
with the complete filename options support.
This patch pulls out just the fix for the trailing "/" problem, and
applies it to GDB's general filename completion. This patch does not
add filename options to GDB, that can always be done later, but I
think this small part is itself a useful fix.
One of the biggest changes I made in this version is that I got rid of
the set_from_readline member function, instead, I now pass the value
of m_from_readline into the completion_tracker constructor.
I then moved the addition of the trailing '/' into filename_completer
so that it is applied in the general filename completion case. I also
added a call to gdb_tilde_expand which was missing from the original
patch, I haven't tested, but I suspect that this meant that the
original patch would not add the trailing '/' if the user entered a
path starting with a tilde character.
When writing the test for this patch I ran into two problems.
The first was that the procedures in lib/completion-support.exp relied
on the command being completed for the test name. This is fine for
many commands, but not when completing a filename, if we use the
command in this case the test name will (potentially) include the name
of the directory in which the test is being run, which means we can't
compare results between two runs of GDB from different directories.
So in this commit I've gone through completion-support.exp and added a
new (optional) testname argument to many of the procedures, this
allows me to give a unique test name, that doesn't include the path
for my new tests.
The second issue was in the procedure make_tab_completion_list_re,
this builds the completion list which is displayed after a double tab
when there are multiple possible completions.
The procedure added the regexp ' +' after each completion, and then
added another ' +' at the very end of the expected output. So, if we
expected to match the name of two functions 'f1' and 'f2' the
generated regexp would be: 'f1 +f2 + +'. This would match just fine,
the actual output would be: 'f1 f2 ', notice that we get two spaces
after each function name.
However, if we complete two directory names 'd1' and 'd2' then the
output will be 'd1/ d2/ '. Notice that now we only have a single
space between each match, however, we do get the '/' added instead.
What happens is that when presenting the matches, readline always adds
the appropriate trailing character; if we performed tab completion of
'break f1' then, as 'f1' is a unique match, we'd get 'break f1 ' with
a trailing space added. However, if we complete 'file d1' then we get
'file d1/'. Then readline is adding a single space after each
possible match, including the last one, which accounts for the
trailing space character.
To resolve this I've simply remove the addition o the second ' +'
within make_tab_completion_list_re, for the function completion
example I gave above the expected pattern is now 'f1 +f2 +', which for
the directory case we expect 'd1/ +d2/ +', both of which work just
fine.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=16265
Co-Authored-By: Lancelot SIX <lsix@lancelotsix.com>
Approved-By: Tom Tromey <tom@tromey.com>
Reviewed-By: John Baldwin <jhb@FreeBSD.org>
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This changes explicit_location_spec to use unique_xmalloc_ptr,
removing some manual memory management.
Reviewed-By: John Baldwin <jhb@FreeBSD.org>
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This changes linespec_location_spec to use unique_xmalloc_ptr,
removing some manual memory management.
Reviewed-By: John Baldwin <jhb@FreeBSD.org>
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On mingw targets it's possible that there are multiple trampoline
symbols for __cxa_throw, in each module where a throw is done, but
without a corresponding global symbol.
Since commit 77f2120b200be6cabbf6f610942fc1173a8df6d3 they cancel each
other out in search_minsyms_for_name, which makes it impossible to set
a breakpoint there:
(gdb) b __cxa_throw
Function "__cxa_throw" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 2 (__cxa_throw) pending.
(gdb) c
Continuing.
[Inferior 1 (process 10004) exited with code 03]
With catch throw it also doesn't work, and you don't even get an error
message:
(gdb) catch throw
Catchpoint 2 (throw)
(gdb) c
Continuing.
[Inferior 1 (process 5532) exited with code 03]
(gdb)
The fix is to simply ignore other trampoline symbols when looking for
corresponding global symbols, and it's working as expected:
(gdb) b __cxa_throw
Breakpoint 2 at 0x13f091590 (2 locations)
(gdb) c
Continuing.
Breakpoint 2.1, 0x000000013f091590 in __cxa_throw ()
(gdb)
And catch throw also works again:
(gdb) catch throw
Catchpoint 2 (throw)
(gdb) c
Continuing.
Catchpoint 2.1 (exception thrown), 0x000000013f181590 in __cxa_throw ()
(gdb)
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29548
Approved-By: Tom Tromey <tom@tromey.com>
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This adds symbol::matches, a wrapper for symbol_matches_domain. Most
places calling symbol_matches_domain can call this method instead,
which is a bit less wordy and also (IMO) clearer.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
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This commit extends the breakpoint mechanism to allow for inferior
specific breakpoints (but not watchpoints in this commit).
As GDB gains better support for multiple connections, and so for
running multiple (possibly unrelated) inferiors, then it is not hard
to imagine that a user might wish to create breakpoints that apply to
any thread in a single inferior. To achieve this currently, the user
would need to create a condition possibly making use of the $_inferior
convenience variable, which, though functional, isn't the most user
friendly.
This commit adds a new 'inferior' keyword that allows for the creation
of inferior specific breakpoints.
Inferior specific breakpoints are automatically deleted when the
associated inferior is removed from GDB, this is similar to how
thread-specific breakpoints are deleted when the associated thread is
deleted.
Watchpoints are already per-program-space, which in most cases mean
watchpoints are already inferior specific. There is a small window
where inferior-specific watchpoints might make sense, which is after a
vfork, when two processes are sharing the same address space.
However, I'm leaving that as an exercise for another day. For now,
attempting to use the inferior keyword with a watchpoint will give an
error, like this:
(gdb) watch a8 inferior 1
Cannot use 'inferior' keyword with watchpoints
A final note on the implementation: currently, inferior specific
breakpoints, like thread-specific breakpoints, are inserted into every
inferior, GDB then checks once the inferior stops if we are in the
correct thread or inferior, and resumes automatically if we stopped in
the wrong thread/inferior.
An obvious optimisation here is to only insert breakpoint locations
into the specific program space (which mostly means inferior) that
contains either the inferior or thread we are interested in. This
would reduce the number times GDB has to stop and then resume again in
a multi-inferior setup.
I have a series on the mailing list[1] that implements this
optimisation for thread-specific breakpoints. Once this series has
landed I'll update that series to also handle inferior specific
breakpoints in the same way. For now, inferior specific breakpoints
are just slightly less optimal, but this is no different to
thread-specific breakpoints in a multi-inferior debug session, so I
don't see this as a huge problem.
[1] https://inbox.sourceware.org/gdb-patches/cover.1685479504.git.aburgess@redhat.com/
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Fixes the issue where jump failed if multiple inferiors run the same
source.
See the below example
$ gdb -q ./simple
Reading symbols from ./simple...
(gdb) break 2
Breakpoint 1 at 0x114e: file simple.c, line 2.
(gdb) run
Starting program: /temp/simple
Breakpoint 1, main () at simple.c:2
2 int a = 42;
(gdb) add-inferior
[New inferior 2]
Added inferior 2 on connection 1 (native)
(gdb) inferior 2
[Switching to inferior 2 [<null>] (<noexec>)]
(gdb) info inferiors
Num Description Connection Executable
1 process 6250 1 (native) /temp/simple
* 2 <null> 1 (native)
(gdb) file ./simple
Reading symbols from ./simple...
(gdb) run
Starting program: /temp/simple
Thread 2.1 "simple" hit Breakpoint 1, main () at simple.c:2
2 int a = 42;
(gdb) info inferiors
Num Description Connection Executable
1 process 6250 1 (native) /temp/simple
* 2 process 6705 1 (native) /temp/simple
(gdb) jump 3
Unreasonable jump request
(gdb)
In this example, jump fails because the debugger finds two different
locations, one for each inferior.
Solution is to limit the search to the current program space.
This is done by having the jump_command function use
decode_line_with_current_source rather than
decode_line_with_last_displayed, which makes sense,
the *_current_source function always looks up a location based on the
current thread's location -- if a user is asking the current thread to
jump, then surely their destination should be relative to where the
current thread is located.
Then, inside decode_line_with_current_source, the call to
decode_line_1 is updated to pass through the current program_space,
which will limit the returned locations to those in the current
program space.
Approved-By: Andrew Burgess <aburgess@redhat.com>
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Linetables no longer change after they are created. This patch
applies const to them.
Note there is one hack to cast away const in mdebugread.c. This code
allocates a linetable using 'malloc', then later copies it to the
obstack. While this could be cleaned up, I chose not to do so because
I have no way of testing it.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
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This removes ALL_BLOCK_SYMBOLS in favor of foreach.
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This converts block_containing_function to be a method. This was
mostly written by script.
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This changes value_type to be a method of value. Much of this patch
was written by script.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
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During breakpoint re-setting, the source_filename of an
explicit_location_spec is used to lookup the symtabs associated with
the breakpoint being re-set. This source_filename is compared with each
known symtab filename in order to retrieve the breakpoint's symtabs.
However the source_filename may have been originally copied from a
symtab's fullname (the path where GDB found the source file) when the
breakpoint was first created. If a breakpoint symtab's filename and
fullname differ and there is no substitute-path rule that converts the
fullname to the filename, this will cause a NOT_FOUND_ERROR to be thrown
during re-setting.
Fix this by using a symtab's filename to set the explicit_location_spec
source_filename instead of the symtab's fullname.
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Although the bool want_start_sal isn't actually used without being assigned
a value, initialize it to be false in order to prevent the following
-Wmaybe-uninitialized warning:
linespec.c: In function ‘void minsym_found(linespec_state*, objfile*, minimal_symbol*, std::vector<symtab_and_line>*)’:
linespec.c:4150:19: warning: ‘want_start_sal’ may be used uninitialized [-Wmaybe-uninitialized]
4150 | if (is_function && want_start_sal)
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This commit is the result of running the gdb/copyright.py script,
which automated the update of the copyright year range for all
source files managed by the GDB project to be updated to include
year 2023.
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[I sent this earlier today, but I don't see it in the archives.
Resending it through a different computer / SMTP.]
The use of the static buffer in command_line_input is becoming
problematic, as explained here [1]. In short, with this patch [2] that
attempt to fix a post-hook bug, when running gdb.base/commands.exp, we
hit a case where we read a "define" command line from a script file
using command_command_line_input. The command line is stored in
command_line_input's static buffer. Inside the define command's
execution, we read the lines inside the define using command_line_input,
which overwrites the define command, in command_line_input's static
buffer. After the execution of the define command, execute_command does
a command look up to see if a post-hook is registered. For that, it
uses a now stale pointer that used to point to the define command, in
the static buffer, causing a use-after-free. Note that the pointer in
execute_command points to the dynamically-allocated buffer help by the
static buffer in command_line_input, not to the static object itself,
hence why we see a use-after-free.
Fix that by removing the static buffer. I initially changed
command_line_input and other related functions to return an std::string,
which is the obvious but naive solution. The thing is that some callees
don't need to return an allocated string, so this this an unnecessary
pessimization. I changed it to passing in a reference to an std::string
buffer, which the callee can use if it needs to return
dynamically-allocated content. It fills the buffer and returns a
pointers to the C string inside. The callees that don't need to return
dynamically-allocated content simply don't use it.
So, it started with modifying command_line_input as described above, all
the other changes derive directly from that.
One slightly shady thing is in handle_line_of_input, where we now pass a
pointer to an std::string's internal buffer to readline's history_value
function, which takes a `char *`. I'm pretty sure that this function
does not modify the input string, because I was able to change it (with
enough massaging) to take a `const char *`.
A subtle change is that we now clear a UI's line buffer using a
SCOPE_EXIT in command_line_handler, after executing the command.
This was previously done by this line in handle_line_of_input:
/* We have a complete command line now. Prepare for the next
command, but leave ownership of memory to the buffer . */
cmd_line_buffer->used_size = 0;
I think the new way is clearer.
[1] https://inbox.sourceware.org/gdb-patches/becb8438-81ef-8ad8-cc42-fcbfaea8cddd@simark.ca/
[2] https://inbox.sourceware.org/gdb-patches/20221213112241.621889-1-jan.vrany@labware.com/
Change-Id: I8fc89b1c69870c7fc7ad9c1705724bd493596300
Reviewed-By: Tom Tromey <tom@tromey.com>
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With gcc 4.8/4.9, we run into this build failure (and other similar
ones):
/home/palves/gdb/binutils-gdb/src/gdb/location.h:224:59: error: could not convert ‘{0, LINE_OFFSET_UNKNOWN}’ from ‘<brace-enclosed initializer list>’ to ‘line_offset’
struct line_offset line_offset = {0, LINE_OFFSET_UNKNOWN};
^
The issue is that at around the GCC 4.8/4.9 era, a default member
initializer prevented the struct from being an aggregate, so you
cannot use aggregate initialization on them. That rule changed after
GCC 4.9 and GCC 5 & later uses new rules.
Fix this by not using aggregate initialization for struct line_offset.
The default member initization already leaves line_offset as {0,
LINE_OFFSET_UNKNOWN}, so initialization to those values can just go
away. The remaining cases are of the form {0, LINE_OFFSET_NONE}, and
those cases can be better rewritten to delay setting the sign field
until we know we have a valid offset.
Change-Id: I0506ea4a83c5fa2f15e159569db68b3b0a7509b4
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This converts set_location_spec_string to a method of location_spec,
and makes the location_spec::as_string field protected, renaming it to
m_as_string along the way.
Change-Id: Iccfb1654e9fa7808d0512df89e775f9eacaeb9e0
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This converts location_spec_to_string to a method of location_spec,
simplifying the code using it, as it no longer has to use
std::unique_ptr::get().
Change-Id: I621bdad8ea084470a2724163f614578caf8f2dd5
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This converts location_spec_type to location_spec::type().
Change-Id: Iff4cbfafb1cf3d22adfa142ff939b4a148e52273
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copy_location_spec is just a wrapper around location_spec::clone(), so
remove it and call clone() directly. This simplifies users, as they
no longer have to use std::unique_ptr::get().
Change-Id: I8ce8658589460b98888283b306b315a5b8f73976
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Currently, there's the location_spec hierarchy, and then some
location_spec subclasses have their own struct type holding all their
data fields.
I.e., there is this:
location_spec
explicit_location_spec
linespec_location_spec
address_location_spec
probe_location_spec
and then these separate types:
explicit_location
linespec_location
where:
explicit_location_spec
has-a explicit_location
linespec_location_spec
has-a linespec_location
This patch eliminates explicit_location and linespec_location,
inlining their members in the corresponding location_spec type.
The location_spec subclasses were the ones currently defined in
location.c, so they are moved to the header. Since the definitions of
the classes are now visible, we no longer need location_spec_deleter.
Some constructors that are used for cloning location_specs, like:
explicit explicit_location_spec (const struct explicit_location *loc)
... were converted to proper copy ctors.
In the process, initialize_explicit_location is eliminated, and some
functions that returned the "data type behind a locspec", like
get_linespec_location are converted to downcast functions, like
as_linespec_location_spec.
Change-Id: Ia31ccef9382b25a52b00fa878c8df9b8cf2a6c5a
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Currently, GDB internally uses the term "location" for both the
location specification the user input (linespec, explicit location, or
an address location), and for actual resolved locations, like the
breakpoint locations, or the result of decoding a location spec to
SaLs. This is expecially confusing in the breakpoints module, as
struct breakpoint has these two fields:
breakpoint::location;
breakpoint::loc;
"location" is the location spec, and "loc" is the resolved locations.
And then, we have a method called "locations()", which returns the
resolved locations as range...
The location spec type is presently called event_location:
/* Location we used to set the breakpoint. */
event_location_up location;
and it is described like this:
/* The base class for all an event locations used to set a stop event
in the inferior. */
struct event_location
{
and even that is incorrect... Location specs are used for finding
actual locations in the program in scenarios that have nothing to do
with stop events. E.g., "list" works with location specs.
To clean all this confusion up, this patch renames "event_location" to
"location_spec" throughout, and then all the variables that hold a
location spec, they are renamed to include "spec" in their name, like
e.g., "location" -> "locspec". Similarly, functions that work with
location specs, and currently have just "location" in their name are
renamed to include "spec" in their name too.
Change-Id: I5814124798aa2b2003e79496e78f95c74e5eddca
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I noticed a few spots in GDB that use "typedef enum". However, in C++
this isn't as useful, as the tag is automatically entered as a
typedef. This patch removes most uses of "typedef enum" -- the
exceptions being in some nat-* code I can't compile, and
glibc_thread_db.h, which I think is more or less a copy of some C code
from elsewhere.
Tested by rebuilding.
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Replace with calls to blockvector::blocks, and the appropriate method
call on the returned array_view.
Change-Id: I04d1f39603e4d4c21c96822421431d9a029d8ddd
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Replace with equivalent method.
Change-Id: I0e033095e7358799930775e61028b48246971a7d
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Replace with equivalent methods.
Change-Id: I334a319909a50b5cc5570a45c38c70e10dc00630
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Replace with equivalent methods.
Change-Id: I31ec00f5bf85335c8b23d306ca0fe0b84d489101
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This turns symbol_symtab into a method on symbol. It also replaces
symbol_set_symtab with a method.
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Add a getter and a setter for a minimal symbol's type. Remove the
corresponding macro and adjust all callers.
Change-Id: I89900df5ffa5687133fe1a16b2e0d4684e67a77d
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Remove all macros related to getting and setting some symbol value:
#define SYMBOL_VALUE(symbol) (symbol)->value.ivalue
#define SYMBOL_VALUE_ADDRESS(symbol) \
#define SET_SYMBOL_VALUE_ADDRESS(symbol, new_value) \
#define SYMBOL_VALUE_BYTES(symbol) (symbol)->value.bytes
#define SYMBOL_VALUE_COMMON_BLOCK(symbol) (symbol)->value.common_block
#define SYMBOL_BLOCK_VALUE(symbol) (symbol)->value.block
#define SYMBOL_VALUE_CHAIN(symbol) (symbol)->value.chain
#define MSYMBOL_VALUE(symbol) (symbol)->value.ivalue
#define MSYMBOL_VALUE_RAW_ADDRESS(symbol) ((symbol)->value.address + 0)
#define MSYMBOL_VALUE_ADDRESS(objfile, symbol) \
#define BMSYMBOL_VALUE_ADDRESS(symbol) \
#define SET_MSYMBOL_VALUE_ADDRESS(symbol, new_value) \
#define MSYMBOL_VALUE_BYTES(symbol) (symbol)->value.bytes
#define MSYMBOL_BLOCK_VALUE(symbol) (symbol)->value.block
Replace them with equivalent methods on the appropriate objects.
Change-Id: Iafdab3b8eefc6dc2fd895aa955bf64fafc59ed50
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Same idea as previous patch, but for symtab::pspace.
Change-Id: I1023abe622bea75ef648c6a97a01b53775d4104d
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Same idea as previous patch, but for symtab::objfile. I find
it clearer without this wrapper, as it shows that the objfile is
common to all symtabs of a given compunit. Otherwise, you could think
that each symtab (of a given compunit) can have a specific objfile.
Change-Id: Ifc0dbc7ec31a06eefa2787c921196949d5a6fcc6
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