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2024-09-13gdb/solib: use owning_intrusive_list for solib listSimon Marchi1-7/+6
Functions implementing `solib_ops::current_sos` return a list of solib object, transferring the ownership to their callers. However, the return type, `intrusive_list<solib>`, does not reflect that. Also, some of these functions build these lists incrementally, reading this from the target for each solib. If a target read were to throw, for instance, the already created solibs would just be leaked. Change `solib_ops::current_sos` to return an owning_intrusive_list to address that. Change `program_space::so_list` to be an owning_intrusive_list as well. This also saves us doing a few manual deletes. Change-Id: I6e4071d49744874491625075136c59cce8e608d4 Reviewed-by: Keith Seitz <keiths@redhat.com>
2024-09-07gdb: improve shared library build-id check for core-filesAndrew Burgess1-0/+5
When GDB opens a core file, in 'core_target::build_file_mappings ()', we collection information about the files that are mapped into the core file, specifically, the build-id and the DT_SONAME attribute for the file, which will be set for some shared libraries. We then cache the DT_SONAME to build-id information on the core file bfd object in the function set_cbfd_soname_build_id. Later, when we are loading the shared libraries for the core file, we can use the library's file name to look in the DT_SONAME to build-id map, and, if we find a matching entry, we can use the build-id to validate that we are loading the correct shared library. This works OK, but has some limitations: not every shared library will have a DT_SONAME attribute. Though it is good practice to add such an attribute, it's not required. A library without this attribute will not have its build-id checked, which can lead to GDB loading the wrong shared library. What I want to do in this commit is to improve GDB's ability to use the build-ids extracted in core_target::build_file_mappings to both validate the shared libraries being loaded, and then to use these build-ids to potentially find (via debuginfod) the shared library. To do this I propose making the following changes to GDB: (1) Rather than just recording the DT_SONAME to build-id mapping in set_cbfd_soname_build_id, we should also record, the full filename to build-id mapping, and also the memory ranges to build-id mapping for every memory range covered by every mapped file. (2) Add a new callback solib_ops::find_solib_addr. This callback takes a solib object and returns an (optional) address within the inferior that is part of this library. We can use this address to find a mapped file using the stored memory ranges which will increase the cases in which a match can be found. (3) Move the mapped file record keeping out of solib.c and into corelow.c. Future commits will make use of this information from other parts of GDB. This information was never solib specific, it lived in the solib.c file because that was the only user of the data, but really, the data is all about the core file, and should be stored in core_target, other parts of GDB can then query this data as needed. Now, when we load a shared library for a core file, we do the following lookups: 1. Is the exact filename of the shared library found in the filename to build-id map? If so then use this build-id for validation. 2. Find an address within the shared library using ::find_solib_addr and then look for an entry in the mapped address to build-id map. If an entry is found then use this build-id. 3. Finally, look in the soname to build-id map. If an entry is found then use this build-id. The addition of step #2 here means that GDB is now far more likely to find a suitable build-id for a shared library. Having acquired a build-id the existing code for using debuginfod to lookup a shared library object can trigger more often. On top of this, we also create a build-id to filename map. This is useful as often a shared library is implemented as a symbolic link to the actual shared library file. The mapped file information is stored based on the actual, real file name, while the shared library information holds the original symbolic link file name. If when loading the shared library, we find the symbolic link has disappeared, we can use the build-id to file name map to check if the actual file is still around, if it is (and if the build-id matches) then we can fall back to use that file. This is another way in which we can slightly increase the chances that GDB will find the required files when loading a core file. Adding all of the above required pretty much a full rewrite of the existing set_cbfd_soname_build_id function and the corresponding get_cbfd_soname_build_id function, so I have taken the opportunity to move the information caching out of solib.c and into corelow.c where it is now accessed through the function core_target_find_mapped_file. At this point the benefit of this move is not entirely obvious, though I don't think the new location is significantly worse than where it was originally. The benefit though is that the cached information is no longer tied to the shared library loading code. I already have a second set of patches (not in this series) that make use of this caching from elsewhere in GDB. I've not included those patches in this series as this series is already pretty big, but even if those follow up patches don't arrive, I think the new location is just as good as the original location. Rather that caching the information within the core file BFD via the registry mechanism, the information used for the mapped file lookup is now stored within the core_file target directly.
2024-08-12gdb: add program_space parameter to lookup_minimal_symbolSimon Marchi1-1/+1
>From what I can see, lookup_minimal_symbol doesn't have any dependencies on the global current state other than the single reference to current_program_space. Add a program_space parameter and make that current_program_space reference bubble up one level. Change-Id: I759415e2f9c74c9627a2fe05bd44eb4147eee6fe Reviewed-by: Keith Seitz <keiths@redhat.com> Approved-By: Andrew Burgess <aburgess@redhat.com>
2024-08-12gdb: make lookup_minimal_symbol objf and sfile parameters optionalSimon Marchi1-1/+1
Most calls to lookup_minimal_symbol don't pass a value for sfile and objf. Make these parameters optional (have a default value of nullptr). And since passing a value to `objf` is much more common than passing a value to `sfile`, swap the order so `objf` comes first, to avoid having to pass a nullptr value to `sfile` when wanting to pass a value to `objf`. Change-Id: I8e9cc6b942e593bec640f9dfd30f62786b0f5a27 Reviewed-by: Keith Seitz <keiths@redhat.com> Approved-By: Andrew Burgess <aburgess@redhat.com>
2024-08-12gdb: drop struct keyword when using bound_minimal_symbolSimon Marchi1-3/+3
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>
2024-05-16gdb: move lm_info to solib in dsbt_current_sosSimon Marchi1-0/+1
Commit 8971d2788e79 ("gdb: link so_list using intrusive_list") mistakenly removed the line that moves the lm_info unique pointer to sop->lm_info, probably due to a bad conflict resolution. Restore that line. Unfortunately, this code is only used for TI C66, which is not widely tested (if used at all). Change-Id: I9f64eb4430c324bc93ddb4bd00d820dee34adfbb Approved-By: Tom Tromey <tom@tromey.com>
2024-04-22gdb: move store/extract integer functions to extract-store-integer.{c,h}Simon Marchi1-0/+1
Move the declarations out of defs.h, and the implementations out of findvar.c. I opted for a new file, because this functionality of converting integers to bytes and vice-versa seems a bit to generic to live in findvar.c. Change-Id: I524858fca33901ee2150c582bac16042148d2251 Approved-By: John Baldwin <jhb@FreeBSD.org>
2024-03-26gdb, gdbserver, gdbsupport: remove includes of early headersSimon Marchi1-1/+0
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>
2024-02-06gdb: remove core_bfd macroSimon Marchi1-1/+2
The core_bfd macro hides a use of current_program_space. Remove it, so that we have the opportunity to get the program space from the context, if possible. I guess that the macro was introduced at some point to replace a global variable of the same name without changing all the uses. Change-Id: I971a65b29b5e5a5941f3cb7ea234547daa787268 Approved-By: Tom Tromey <tom@tromey.com>
2024-02-05gdb: rename target_so_ops to solib_opsSimon Marchi1-1/+1
I don't like the name `target_so_ops`, because: - The name `target` is so overloaded, and in this case it's not even related to target_ops or anything else called "target". - We do have an implementation that actually fetches solibs from the target (solib_target_so_op in solib-target.c), so it's confusing for the "base class" to be called target_something as well. Rename to solib_ops. Change-Id: I46a983d44e81400470e22deb09aaf26ad8a3587f Approved-By: Tom Tromey <tom@tromey.com>
2024-02-05gdb: rename struct shobj -> struct solibSimon Marchi1-6/+6
`struct so_list` was recently renamed to `struct shobj` (in 3fe0dfd1604f ("gdb: rename struct so_list to shobj")). In hindsight, `solib` would have been a better name. We have solib.c, the implementations in solib-*.c, many functions with solib in their name, the solib_loaded / solib_unloaded observables, etc. Rename shobj to solib. Change-Id: I0af1c7a9b29bdda027e9af633f6d37e1cfcacd5d Approved-By: Tom Tromey <tom@tromey.com>
2024-01-12Update copyright year range in header of all files managed by GDBAndrew Burgess1-1/+1
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.
2023-11-21gdb: Replace gdb::optional with std::optionalLancelot Six1-1/+1
Since GDB now requires C++17, we don't need the internally maintained gdb::optional implementation. This patch does the following replacing: - gdb::optional -> std::optional - gdb::in_place -> std::in_place - #include "gdbsupport/gdb_optional.h" -> #include <optional> This change has mostly been done automatically. One exception is gdbsupport/thread-pool.* which did not use the gdb:: prefix as it already lives in the gdb namespace. Change-Id: I19a92fa03e89637bab136c72e34fd351524f65e9 Approved-By: Tom Tromey <tom@tromey.com> Approved-By: Pedro Alves <pedro@palves.net>
2023-11-21gdb: Use C++17's std::make_unique instead of gdb::make_uniqueLancelot Six1-1/+1
gdb::make_unique is a wrapper around std::make_unique when compiled with C++17. Now that C++17 is required, use std::make_unique directly in the codebase, and remove gdb::make_unique. Change-Id: I80b615e46e4b7c097f09d78e579a9bdce00254ab Approved-By: Tom Tromey <tom@tromey.com> Approved-By: Pedro Alves <pedro@palves.net
2023-10-19gdb: rename struct so_list to shobjSimon Marchi1-6/+6
Now that so_list lists are implemented using intrusive_list, it doesn't really make sense for the element type to be named "_list". Rename to just `struct shobj` (`struct so` was deemed to be not greppable enough). Change-Id: I1063061901298bb40fee73bf0cce44cd12154c0e Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: link so_list using intrusive_listSimon Marchi1-8/+4
Replace the hand-made linked list implementation with intrusive_list, simplying management of list items. Change-Id: I7f55fd88325bb197cc655c9be5a2ec966d8cc48d Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: make so_list::{so_original_name,so_name} std::stringsSimon Marchi1-3/+2
Change these two fields, simplifying memory management and copying. Change-Id: If2559284c515721e71e1ef56ada8b64667eebe55 Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: make so_list::lm_info a unique_ptrSimon Marchi1-3/+4
Make it a unique_ptr, so it gets automatically deleted when the so_list is deleted. Change-Id: Ib62d60ae2a80656239860b80e4359121c93da13d Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: use gdb::checked_static_cast when casting lm_infoSimon Marchi1-1/+1
Now that the lm_info class hierarchy has a virtual destructor and therefore a vtable, use checked_static_cast instead of C-style cases to ensure (when building in dev mode) that we're casting to the right kind of lm_info. Change-Id: I9a99b7d6aa9a44edbe76377d57a7008cfb75a744 Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: remove target_so_ops::free_soSimon Marchi1-10/+1
target_so_ops::free_so is responsible for freeing the specific lm_info object. All implementations basically just call delete. Remove that method, make the destructor of lm_info virtual, and call delete directly from the free_so function. Make the sub-classes final, just because it's good practice. Change-Id: Iee1fd4861c75034a9e41a656add8ed8dfd8964ee Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: rename lm_info_base to lm_infoSimon Marchi1-1/+1
The base class doesn't need to have "_base" in its name, all the sub-classes have a specific suffix. Change-Id: I87652105cfedd87898770a81f0eda343ff7f2bdb Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: allocate so_list with new, deallocate with deleteSimon Marchi1-2/+1
Initialize all fields in the class declaration, change allocations to use "new", change deallocations to use "delete". This is needed by a subsequent patches that use C++ stuff in so_list. Change-Id: I4b140d9f1ec9ff809554a056f76e3eb2b9e23222 Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: replace some so_list parameters to use referencesSimon Marchi1-5/+4
A subsequent patch changes so_list to be linked using intrusive_list. Iterating an intrusive_list yields some references to the list elements. Convert some functions accepting so_list objects to take references, to make things easier and more natural. Add const where possible and convenient. Change-Id: Id5ab5339c3eb6432e809ad14782952d6a45806f3 Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-19gdb: add program_space parameter to target_so_ops::clear_solibSimon Marchi1-20/+14
The clear_solib is implicitly meant to clear the resources associated to the current program space (that's what the solib implementations that actually support multi-program-space / multi-inferior do). Make that explicit by adding a program_space parameter and pass down current_program_space in call sites. The implementation of the clear_solib callbacks is fairly simple, I don't think any of them rely on global state other than accessing current_program_space. Change-Id: I8d0cc4db7b4f8db8d7452879c0c62db03269bf46 Approved-By: Pedro Alves <pedro@palves.net> Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>
2023-10-10gdb: remove target_gdbarchSimon Marchi1-12/+14
This function is just a wrapper around the current inferior's gdbarch. I find that having that wrapper just obscures where the arch is coming from, and that it's often used as "I don't know which arch to use so I'll use this magical target_gdbarch function that gets me an arch" when the arch should in fact come from something in the context (a thread, objfile, symbol, etc). I think that removing it and inlining `current_inferior ()->arch ()` everywhere will make it a bit clearer where that arch comes from and will trigger people into reflecting whether this is the right place to get the arch or not. Change-Id: I79f14b4e4934c88f91ca3a3155f5fc3ea2fadf6b Reviewed-By: John Baldwin <jhb@FreeBSD.org> Approved-By: Andrew Burgess <aburgess@redhat.com>
2023-09-28gdb: remove unused imports in solib*.[ch]Simon Marchi1-3/+2
I'm starting to work on these files, I thought it would be a good time to remove unused imports. These were identified by include-what-you-use. Tested by rebuilding. Change-Id: I3eaf3fa0ea3506c7ecfbc8ecff5031433b1dadb8 Reviewed-By: John Baldwin <jhb@FreeBSD.org>
2023-06-05[gdb] Fix grammar in comments and docsTom de Vries1-1/+1
Fix grammar in some comments and docs: - machines that doesn't -> machines that don't - its a -> it's a - its the -> it's the - if does its not -> if it does it's not - one more instructions if doesn't match -> one more instruction if it doesn't match - it's own -> its own - it's first -> its first - it's pointer -> its pointer I also came across "it's performance" in gdb/stubs/*-stub.c in the HP public domain notice, I've left that alone. Tested on x86_64-linux.
2023-05-07Remove ALL_OBJFILE_OSECTIONSTom Tromey1-2/+1
This replaces ALL_OBJFILE_OSECTIONS with an iterator so that for-each can be used.
2023-05-07Rename objfile::sectionsTom Tromey1-1/+1
I think objfile::sections makes sense as the name of the method to iterate over an objfile's sections, so this patch renames the existing field to objfile::sections_start in preparation for that.
2023-03-28Use function_view in gdb_bfd_lookup_symbolTom Tromey1-10/+7
This changes gdb_bfd_lookup_symbol to use a function_view. This simplifies the code a little bit.
2023-01-01Update copyright year range in header of all files managed by GDBJoel Brobecker1-1/+1
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.
2022-09-20Constify some target_so_ops instancesTom Tromey1-10/+13
This changes some target_so_ops instances to be const. This makes their use a little more obvious (they can't be mutated) and also allows for the removal of some initialization code.
2022-07-28Rewrite registry.hTom Tromey1-1/+1
This rewrites registry.h, removing all the macros and replacing it with relatively ordinary template classes. The result is less code than the previous setup. It replaces large macros with a relatively straightforward C++ class, and now manages its own cleanup. The existing type-safe "key" class is replaced with the equivalent template class. This approach ended up requiring relatively few changes to the users of the registry code in gdb -- code using the key system just required a small change to the key's declaration. All existing users of the old C-like API are now converted to use the type-safe API. This mostly involved changing explicit deletion functions to be an operator() in a deleter class. The old "save/free" two-phase process is removed, and replaced with a single "free" phase. No existing code used both phases. The old "free" callbacks took a parameter for the enclosing container object. However, this wasn't truly needed and is removed here as well.
2022-06-02ODR warning for struct ext_link_mapTom Tromey1-2/+2
This renames the solib-dsbt.c copy of "struct ext_link_map" to avoid an ODR warning. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
2022-04-11gdb: remove symbol value macrosSimon Marchi1-1/+1
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
2022-03-29Unify gdb printf functionsTom Tromey1-40/+40
Now that filtered and unfiltered output can be treated identically, we can unify the printf family of functions. This is done under the name "gdb_printf". Most of this patch was written by script.
2022-01-01Automatic Copyright Year update after running gdb/copyright.pyJoel Brobecker1-1/+1
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
2021-08-18gdb/solib: Refactor scan_dyntagAaron Merey1-101/+3
scan_dyntag is unnecessarily duplicated in solib-svr4.c and solib-dsbt.c. Move this function to solib.c and rename it to gdb_bfd_scan_elf_dyntag. Also add it to solib.h so it is included in both solib-svr4 and solib-dsbt.
2021-06-28gdb: convert obj_section macros to methodsSimon Marchi1-1/+1
Convert these three macros to methods of obj_section. The problem fixed by the following patch is caused by an out of bound access of the objfile::section_offsets vector. Since this is deep in macros, we don't get a clear backtrace and it's difficult to debug. Changing that to methods means we can step in them and break on them. Because their implementation requires knowing about struct objfile, move struct obj_section below struct objfile in objfiles.h. The obj_section_offset was used in one place as an lvalue to set offsets, in machoread.c. Replace that with a set_offset method. Add the objfile::section_offset and objfile::set_section_offset methods to improve encapsulation (reduce other objects poking into struct objfile's internals). gdb/ChangeLog: * objfiles.h (struct obj_section): Move down. <offset, set_offset, addr, endaddr>: New. (obj_section_offset, obj_section_addr, obj_section_endaddr), replace all users to use obj_section methods. (struct objfile) <section_offset, set_section_offset>: New. Change-Id: I97e8fcae93ab2353fbdadcb4a5ec10d7949a7334
2021-03-24gdb: remove current_top_target functionSimon Marchi1-2/+4
The current_top_target function is a hidden dependency on the current inferior. Since I'd like to slowly move towards reducing our dependency on the global current state, remove this function and make callers use current_inferior ()->top_target () There is no expected change in behavior, but this one step towards making those callers use the inferior from their context, rather than refer to the global current inferior. gdb/ChangeLog: * target.h (current_top_target): Remove, make callers use the current inferior instead. * target.c (current_top_target): Remove. Change-Id: Iccd457036f84466cdaa3865aa3f9339a24ea001d
2021-02-24gdb: make the target_sections table private within program_spaceAndrew Burgess1-1/+1
Following on from earlier commits which made access to the target_sections table more 'const', this commit makes the table private within the program_space class and provides member functions to access the table. Ideally I would have liked for the new target_sections member function (on program_space) to return a 'const' reference to the table within the program_space. Unfortunately, there are two places in solib-*.c, where code outside of the program_space class modifies the target_sections table, and so to support this we need to return a non-const reference. There should be no user visible changes after this commit. gdb/ChangeLog: * exec.c (exec_target::close): Call new clear_target_sections function. (program_space::add_target_sections): Update name of member variable. (program_space::foreach_target_section): New function. (program_space::add_target_sections): Update name of member variable. (program_space::remove_target_sections): Likewise. (exec_one_fork): Use new target_sections member function. (exec_target::get_section_table): Likewise. (exec_target::files_info): Likewise. (set_section_command): Use new foreach_target_section member function. (exec_set_section_address): Likewise. (exec_target::has_memory): Use new target_sections member function. * progspace.h (program_space::clear_target_sections): New member function. (program_space::target_sections): Rename member variable to m_target_sections, replace with a new member function. (program_space::foreach_target_section): Declare new member function. (program_space::m_target_sections): New member variable. * solib-dsbt.c (scan_dyntag): Use new member function. * solib-svr4.c (scan_dyntag): Likewise.
2021-02-24gdb: spread a little 'const' through the target_section_table codeAndrew Burgess1-1/+2
The code to access the target section table can be made more const, so lets do that. There should be no user visible changes after this commit. gdb/ChangeLog: * gdb/bfd-target.c (class target_bfd) <get_section_table>: Make return type const. * gdb/exec.c (struct exec_target) <get_section_table>: Likewise. (section_table_read_available_memory): Make local const. (exec_target::xfer_partial): Make local const. (print_section_info): Make parameter const. * gdb/exec.h (print_section_info): Likewise. * gdb/ppc64-tdep.c (ppc64_convert_from_func_ptr_addr): Make local const. * gdb/record-btrace.c (record_btrace_target::xfer_partial): Likewise. * gdb/remote.c (remote_target::remote_xfer_live_readonly_partial): Likewise. * gdb/s390-tdep.c (s390_load): Likewise. * gdb/solib-dsbt.c (scan_dyntag): Likewise. * gdb/solib-svr4.c (scan_dyntag): Likewise. * gdb/target-debug.h (target_debug_print_target_section_table_p): Rename to... (target_debug_print_const_target_section_table_p): ...this. * gdb/target-delegates.c: Regenerate. * gdb/target.c (target_get_section_table): Make return type const. (target_section_by_addr): Likewise. Also make some locals const. (memory_xfer_partial_1): Make some locals const. * gdb/target.h (struct target_ops) <get_section_table>: Make return type const. (target_section_by_addr): Likewise. (target_get_section_table): Likewise.
2021-01-01Update copyright year range in all GDB filesJoel Brobecker1-1/+1
This commits the result of running gdb/copyright.py as per our Start of New Year procedure... gdb/ChangeLog Update copyright year range in copyright header of all GDB files.
2020-10-29Remove symfile_objfile macroTom Tromey1-8/+9
This removes the symfile_objfile macro, in favor of just spelling out the member access. gdb/ChangeLog 2020-10-29 Tom Tromey <tom@tromey.com> * windows-tdep.c (windows_solib_create_inferior_hook): Update. * target.c (info_target_command): Update. * symfile.c (syms_from_objfile_1, finish_new_objfile) (symbol_file_clear, reread_symbols): Update. * symfile-mem.c (add_symbol_file_from_memory_command): Update. * stabsread.c (scan_file_globals): Update. * solib.c (update_solib_list): Update. * solib-svr4.c (elf_locate_base, open_symbol_file_object) (svr4_fetch_objfile_link_map, enable_break) (svr4_relocate_main_executable) (svr4_iterate_over_objfiles_in_search_order): Update. * solib-frv.c (lm_base, enable_break) (frv_relocate_main_executable): Update. (main_got, frv_fdpic_find_canonical_descriptor): Update. (frv_fetch_objfile_link_map): Update. * solib-dsbt.c (lm_base, dsbt_relocate_main_executable): Update. * solib-darwin.c (darwin_solib_create_inferior_hook): Update. * solib-aix.c (solib_aix_solib_create_inferior_hook): Update. * remote.c (remote_target::get_offsets): Update. (remote_target::start_remote) (extended_remote_target::post_attach): Update. * objfiles.c (entry_point_address_query): Update. * nto-procfs.c (nto_procfs_target::create_inferior): Update. * minsyms.c (get_symbol_leading_char): Update. * frame.c (inside_main_func): Update. * progspace.h (symfile_objfile): Remove macro.
2020-10-29Remove the exec_bfd macroTom Tromey1-5/+6
This removes the exec_bfd macro, in favor of new accessors on program_space. In one spot the accessor can't be used; but this is still a big improvement over the macro, IMO. gdb/ChangeLog 2020-10-29 Tom Tromey <tom@tromey.com> * windows-tdep.c (windows_solib_create_inferior_hook): Update. * symfile.c (reread_symbols): Update. * symfile-mem.c (add_symbol_file_from_memory_command) (add_vsyscall_page): Update. * source-cache.c (source_cache::get_plain_source_lines): Update. * solib-svr4.c (find_program_interpreter, elf_locate_base) (svr4_current_sos_direct, svr4_exec_displacement) (svr4_relocate_main_executable): Update. (svr4_iterate_over_objfiles_in_search_order): Update. * solib-frv.c (enable_break2, enable_break): Update. * solib-dsbt.c (lm_base, enable_break): Update. * solib-darwin.c (find_program_interpreter) (darwin_solib_create_inferior_hook): Update. * sol-thread.c (rw_common, ps_pdmodel): Update. * rs6000-nat.c (rs6000_nat_target::create_inferior): Update. * remote.c (compare_sections_command) (remote_target::trace_set_readonly_regions): Update. * remote-sim.c (get_sim_inferior_data) (gdbsim_target::create_inferior, gdbsim_target::create_inferior): Update. (gdbsim_target_open, gdbsim_target::files_info): Update. * exec.h (exec_bfd): Remove macro. * progspace.c (initialize_progspace): Update. * proc-service.c (ps_addr_to_core_addr, core_addr_to_ps_addr): Update. * nto-procfs.c (nto_procfs_target::post_attach) (nto_procfs_target::create_inferior): Update. * maint.c (maintenance_info_sections): Update. * linux-thread-db.c (thread_db_target::get_thread_local_address): Update. * infcmd.c (post_create_inferior): Update. * gcore.c (default_gcore_arch, default_gcore_target): Update. (objfile_find_memory_regions): Update. * exec.c (validate_exec_file, exec_file_attach) (exec_read_partial_read_only, print_section_info): Update. * corelow.c (core_target_open): Update. * corefile.c (reopen_exec_file, validate_files): Update. * arm-tdep.c (gdb_print_insn_arm): Update. * arch-utils.c (gdbarch_update_p, default_print_insn): Update. * progspace.h (struct program_space) <exec_bfd, set_exec_bfd>: New methods.
2020-10-29Remove current_target_sections macroTom Tromey1-1/+1
This removes the current_target_sections macro, replacing it with uses of the appropriate member from current_program_space. gdb/ChangeLog 2020-10-29 Tom Tromey <tom@tromey.com> * progspace.h (current_target_sections): Remove macro. * solib-svr4.c (scan_dyntag): Update. * solib-dsbt.c (scan_dyntag): Update. * exec.c (exec_target::close): Update. (add_target_sections, add_target_sections_of_objfile) (remove_target_sections, exec_target::get_section_table) (exec_target::files_info, set_section_command) (exec_set_section_address, exec_target::has_memory) (exec_target::has_memory): Update.
2020-10-12Change target_section_table to std::vector aliasTom Tromey1-1/+1
Because target_section_table only holds a vector, and because it is used in an "open" way, this patch makes it just be an alias for the std::vector specialization. This makes the code less wordy. If we do ever want to add more specialized behavior to this type, it's simple enough to convert it back to a struct with the few needed methods implied by this change. gdb/ChangeLog 2020-10-12 Tom Tromey <tom@tromey.com> * target.h (struct target_ops) <get_section_table>: Update. (target_get_section_table): Update. * target.c (target_get_section_table, target_section_by_addr) (memory_xfer_partial_1): Update. * target-section.h (target_section_table): Now an alias. * target-delegates.c: Rebuild. * target-debug.h (target_debug_print_target_section_table_p): Rename from target_debug_print_struct_target_section_table_p. * symfile.c (build_section_addr_info_from_section_table): Update. * solib.c (solib_map_sections, solib_contains_address_p): Update. * solib-svr4.c (scan_dyntag): Update. * solib-dsbt.c (scan_dyntag): Update. * remote.c (remote_target::remote_xfer_live_readonly_partial): Update. * record-full.c (record_full_core_target::xfer_partial): Update. * progspace.h (struct program_space) <target_sections>: Update. * exec.h (print_section_info): Update. * exec.c (exec_target::close, build_section_table) (add_target_sections, add_target_sections_of_objfile) (remove_target_sections, exec_on_vfork) (section_table_available_memory) (section_table_xfer_memory_partial) (exec_target::get_section_table, exec_target::xfer_partial) (print_section_info, set_section_command) (exec_set_section_address, exec_target::has_memory): Update. * corelow.c (core_target::build_file_mappings) (core_target::xfer_partial, core_target::info_proc_mappings) (core_target::info_proc_mappings): Update. * bfd-target.c (class target_bfd): Update
2020-10-12Use a std::vector in target_section_tableTom Tromey1-9/+9
This changes target_section_table to wrap a std::vector. This simplifies some code, and also enables the simplifications coming in the subsequent patches. Note that for solib, I chose to have it use a pointer to a target_section_table. This is more convoluted than would be ideal, but I didn't want to convert solib to new/delete as a prerequisite for this series. gdb/ChangeLog 2020-10-12 Tom Tromey <tom@tromey.com> * target.c (target_section_by_addr, memory_xfer_partial_1): Update. * target-section.h (struct target_section_table): Use std::vector. * symfile.h (build_section_addr_info_from_section_table): Take a target_section_table. * symfile.c (build_section_addr_info_from_section_table): Take a target_section_table. * solist.h (struct so_list) <sections>: Change type. <sections_end>: Remove. * solib.c (solib_map_sections, clear_so, solib_read_symbols) (solib_contains_address_p): Update. * solib-svr4.c (scan_dyntag): Update. * solib-dsbt.c (scan_dyntag): Update. * remote.c (remote_target::remote_xfer_live_readonly_partial): Update. * record-full.c (record_full_core_start, record_full_core_end): Remove. (record_full_core_sections): New global. (record_full_core_open_1, record_full_core_target::xfer_partial): Update. * exec.h (build_section_table, section_table_xfer_memory_partial) (add_target_sections): Take a target_section_table. * exec.c (exec_file_attach, clear_section_table): Update. (resize_section_table): Remove. (build_section_table, add_target_sections): Take a target_section_table. (add_target_sections_of_objfile, remove_target_sections) (exec_on_vfork): Update. (section_table_available_memory): Take a target_section_table. (section_table_read_available_memory): Update. (section_table_xfer_memory_partial): Take a target_section_table. (print_section_info, set_section_command) (exec_set_section_address, exec_target::has_memory): Update. * corelow.c (class core_target) <m_core_section_table, m_core_file_mappings>: Remove braces. <~core_target>: Remove. (core_target::core_target): Update. (core_target::~core_target): Remove. (core_target::build_file_mappings) (core_target::xfer_memory_via_mappings) (core_target::xfer_partial, core_target::info_proc_mappings): Update. * bfd-target.c (target_bfd::xfer_partial): Update. (target_bfd::target_bfd): Update. (target_bfd::~target_bfd): Remove.
2020-09-28Remove target_has_execution macroTom Tromey1-1/+1
This removes the object-like macro target_has_execution, replacing it with a function call. target_has_execution_current is also now handled by this function. gdb/ChangeLog 2020-09-28 Tom Tromey <tom@tromey.com> * inferior.h (class inferior) <has_execution>: Update. * windows-tdep.c (windows_solib_create_inferior_hook): Update. * valops.c (find_function_in_inferior) (value_allocate_space_in_inferior): Update. * top.c (kill_or_detach): Update. * target.c (target_preopen, set_target_permissions): Update. (target_has_execution_current): Remove. * sparc64-tdep.c (adi_examine_command, adi_assign_command): Update. * solib.c (update_solib_list, reload_shared_libraries): Update. * solib-svr4.c (svr4_solib_create_inferior_hook): Update. * solib-dsbt.c (enable_break): Update. * score-tdep.c (score7_fetch_inst): Update. * rs6000-nat.c (rs6000_nat_target::xfer_shared_libraries): Update. * remote.c (remote_target::start_remote) (remote_target::remote_check_symbols, remote_target::open_1) (remote_target::remote_detach_1, remote_target::verify_memory) (remote_target::xfer_partial, remote_target::read_description) (remote_target::get_min_fast_tracepoint_insn_len): Update. * record-full.c (record_full_open_1): Update. * record-btrace.c (record_btrace_target_open): Update. * objc-lang.c (lookup_objc_class, lookup_child_selector) (value_nsstring): Update. * linux-thread-db.c (add_thread_db_info) (thread_db_find_new_threads_silently, check_thread_db_callback) (try_thread_db_load_1, record_thread): Update. * linux-tdep.c (linux_info_proc, linux_vsyscall_range_raw): Update. * linux-fork.c (checkpoint_command): Update. * infrun.c (set_non_stop, set_observer_mode) (check_multi_target_resumption, for_each_just_stopped_thread) (maybe_remove_breakpoints, normal_stop) (class infcall_suspend_state): Update. * infcmd.c (ERROR_NO_INFERIOR, kill_if_already_running) (info_program_command, attach_command): Update. * infcall.c (call_function_by_hand_dummy): Update. * inf-loop.c (inferior_event_handler): Update. * gcore.c (gcore_command, derive_heap_segment): Update. * exec.c (exec_file_command): Update. * eval.c (evaluate_subexp): Update. * compile/compile.c (compile_to_object): Update. * cli/cli-dump.c (restore_command): Update. * breakpoint.c (update_watchpoint) (update_inserted_breakpoint_locations) (insert_breakpoint_locations, get_bpstat_thread): Update. * target.h (target_has_execution): Remove macro. (target_has_execution_current): Don't declare. (target_has_execution): Rename from target_has_execution_1. Add argument default.
2020-06-15Change target_read_string APITom Tromey1-7/+4
This simplifies the target_read_string API a bit. Note that some code was using safe_strerror on the error codes returned by target_read_string. It seems to me that this is incorrect (if it was ever correct, it must have been quite a long time ago). gdb/ChangeLog 2020-06-15 Tom Tromey <tromey@adacore.com> * windows-nat.c (windows_nat::handle_output_debug_string): Update. (windows_nat::handle_ms_vc_exception): Update. * target.h (target_read_string): Change API. * target.c (target_read_string): Change API. * solib-svr4.c (open_symbol_file_object, svr4_read_so_list): Update. * solib-frv.c (frv_current_sos): Update. * solib-dsbt.c (dsbt_current_sos): Update. * solib-darwin.c (darwin_current_sos): Update. * linux-thread-db.c (inferior_has_bug): Update. * expprint.c (print_subexp_standard): Update. * ada-lang.c (ada_main_name, ada_tag_name_from_tsd) (ada_exception_message_1): Update.
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