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This replaces ALL_OBJFILE_OSECTIONS with an iterator so that for-each
can be used.
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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.
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Replace spaces with tabs in a bunch of places.
Change-Id: If0f87180f1d13028dc178e5a8af7882a067868b0
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When building GDB with clang 16, I got this,
CXX maint.o
maint.c:1045:23: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
m_space_enabled = 1;
^ ~
maint.c:1057:22: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
m_time_enabled = 1;
^ ~
maint.c:1073:24: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
m_symtab_enabled = 1;
^ ~
3 errors generated.
Work around this by using bool bitfields instead.
Tested by rebuilding on x86_64-linux with clang 16 and gcc 12.
Approved-By: Tom Tromey <tom@tromey.com>
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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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Currently, every internal_error call must be passed __FILE__/__LINE__
explicitly, like:
internal_error (__FILE__, __LINE__, "foo %d", var);
The need to pass in explicit __FILE__/__LINE__ is there probably
because the function predates widespread and portable variadic macros
availability. We can use variadic macros nowadays, and in fact, we
already use them in several places, including the related
gdb_assert_not_reached.
So this patch renames the internal_error function to something else,
and then reimplements internal_error as a variadic macro that expands
__FILE__/__LINE__ itself.
The result is that we now should call internal_error like so:
internal_error ("foo %d", var);
Likewise for internal_warning.
The patch adjusts all calls sites. 99% of the adjustments were done
with a perl/sed script.
The non-mechanical changes are in gdbsupport/errors.h,
gdbsupport/gdb_assert.h, and gdb/gdbarch.py.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Change-Id: Ia6f372c11550ca876829e8fd85048f4502bdcf06
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This changes struct objfile to use a gdb_bfd_ref_ptr. In addition to
removing some manual memory management, this fixes a use-after-free
that was introduced by the registry rewrite series. The issue there
was that, in some cases, registry shutdown could refer to memory that
had already been freed. This help fix the bug by delaying the
destruction of the BFD reference (and thus the per-bfd object) until
after the registry has been shut down.
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"main" is redeclared with a different type in maint.c. I think this
might have come from my first gdb patch, many many years ago. While I
wonder if this profiling code is actually useful at all any more, in
the meantime it's simple to fix the declaration.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
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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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Remove the callback-based selftests::for_each_selftest function and use
an iterator_range instead.
Also use this iterator range in run_tests so all iterations over the
selftests are done in a consistent way. This will become useful in a
later commit.
Change-Id: I0b3a5349a7987fbcb0071f11c394e353df986583
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thread-pool.h requires CXX_STD_THREAD in order to even be included.
However, there's no deep reason for this, and during review we found
that one patch in the new DWARF indexer series unconditionally
requires the thread pool.
Because the thread pool already allows a task to be run in the calling
thread (for example if it is configured to have no threads in the
pool), it seemed straightforward to make this code ok to use when host
threads aren't available at all.
This patch implements this idea. I built it on a thread-less host
(mingw, before my recent configure patch) and verified that the result
builds.
After the thread-pool change, parallel-for.h no longer needs any
CXX_STD_THREAD checks at all, so this patch removes these as well.
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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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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.
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Now that filtered and unfiltered output can be treated identically, we
can unify the puts family of functions. This is done under the name
"gdb_puts". Most of this patch was written by script.
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Add a getter and a setter for a compunit_symtab's blockvector. Remove
the corresponding macro and adjust all callers.
Change-Id: I99484c6619dcbbea7c5d89c72aa660316ca62f64
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Make compunit_filetabs, used to iterate a compunit_symtab's filetabs, a
method of compunit_symtab. The name filetabs conflicts with the current
name of the field. Rename the field to m_filetabs, since at this point
nothing outside of compunit_symtab uses it, so we should treat it as
private (even though it's not actually private). Rename the
last_filetab field to m_last_filetab as well (it's only used on
compunit_symtab::add_filetab).
Adjust the COMPUNIT_FILETABS macro to keep its current behavior of
returning the first filetab.
Change-Id: I537b553a44451c52d24b18ee1bfa47e23747cfc3
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This changes all existing calls to wrap_here to call the method on the
appropriate ui_file instead. The choice of ui_file is determined by
context.
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I think it only really makes sense to call wrap_here with an argument
consisting solely of spaces. Given this, it seemed better to me that
the argument be an int, rather than a string. This patch is the
result. Much of it was written by a script.
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This changes the time / space / symtab per-command statistics code to
send its output to gdb_stdlog rather than gdb_stdout. This seems
slightly more correct to me.
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Many otherwise ordinary commands choose to use unfiltered output
rather than filtered. I don't think there's any reason for this, so
this changes many such commands to use filtered output instead.
Note that complete_command is not touched due to a comment there
explaining why unfiltered output is believed to be used.
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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.
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Consider test-case test.c:
...
int main (void) {
void *p = malloc (10);
return 0;
}
...
When compiled to a non-PIE exec:
...
$ gcc -m32 test.c
...
the call sequence looks like:
...
8048447: 83 ec 0c sub $0xc,%esp
804844a: 6a 0a push $0xa
804844c: e8 bf fe ff ff call 8048310 <malloc@plt>
...
which calls to:
...
08048310 <malloc@plt>:
8048310: ff 25 0c a0 04 08 jmp *0x804a00c
8048316: 68 00 00 00 00 push $0x0
804831b: e9 e0 ff ff ff jmp 8048300 <.plt>
...
where the first insn at 0x8048310 initially jumps to the following address
0x8048316, read from the .got.plt @ 0x804a00c:
...
804a000 0c9f0408 00000000 00000000 16830408 ................
804a010 26830408 &...
...
Likewise, when compiled as a PIE:
...
$ gcc -m32 -fPIE -pie test.c
...
we have this call sequence (with %ebx setup to point to the .got.plt):
...
0000055d <main>:
579: 83 ec 0c sub $0xc,%esp
57c: 6a 0a push $0xa
57e: 89 c3 mov %eax,%ebx
580: e8 6b fe ff ff call 3f0 <malloc@plt>
...
which calls to:
...
000003f0 <malloc@plt>:
3f0: ff a3 0c 00 00 00 jmp *0xc(%ebx)
3f6: 68 00 00 00 00 push $0x0
3fb: e9 e0 ff ff ff jmp 3e0 <.plt>
...
where the insn at 0x3f0 initially jumps to following address 0x3f6, read from
the .got.plt at offset 0xc:
...
2000 f41e0000 00000000 00000000 f6030000 ................
2010 06040000 ....
...
When instead doing an inferior call to malloc (with nosharedlib to force
malloc to resolve to malloc@plt rather than the functions in ld.so or libc.so)
with the non-PIE exec, we have the expected:
...
$ gdb -q -batch a.out -ex start -ex nosharedlib -ex "p /x (void *)malloc (10)"
Temporary breakpoint 1 at 0x8048444
Temporary breakpoint 1, 0x08048444 in main ()
$1 = 0x804b160
...
But with the PIE exec, we run into:
...
$ gdb -q -batch a.out -ex start -ex nosharedlib -ex "p /x (void *)malloc (10)"
Temporary breakpoint 1 at 0x56c
Temporary breakpoint 1, 0x5655556c in main ()
Program received signal SIGSEGV, Segmentation fault.
0x565553f0 in malloc@plt ()
...
The segfault happens because:
- the inferior call mechanism doesn't setup %ebx
- %ebx instead is 0
- the jump to "*0xc(%ebx)" reads from memory at 0xc
Fix this by setting up %ebx properly in i386_thiscall_push_dummy_call.
Fixes this failure with target board unix/-m32/-pie/-fPIE reported in
PR28467:
...
FAIL: gdb.base/nodebug.exp: p/c (int) array_index("abcdef",2)
...
Tested on x86_64-linux, with target board unix/-m32 and unix/-m32/-fPIE/-pie.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28467
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While reading the interface of gdb::array_view, I realized that the
constructor that builds an array_view on top of a contiguous container
(such as std::vector, std::array or even gdb::array_view) can be
missused.
Lets consider the following code sample:
struct Parent
{
Parent (int a): a { a } {}
int a;
};
std::ostream &operator<< (std::ostream& os, const Parent & p)
{ os << "Parent {a=" << p.a << "}"; return os; }
struct Child : public Parent
{
Child (int a, int b): Parent { a }, b { b } {}
int b;
};
std::ostream &operator<< (std::ostream& os, const Child & p)
{ os << "Child {a=" << p.a << ", b=" << p.b << "}"; return os; }
template <typename T>
void print (const gdb::array_view<const T> &p)
{
std::for_each (p.begin (), p.end (), [](const T &p) { std::cout << p << '\n'; });
}
Then with the current interface nothinng prevents this usage of
array_view to be done:
const std::array<Child, 3> elts = {
Child {1, 2},
Child {3, 4},
Child {5, 6}
};
print_all<Parent> (elts);
This compiles fine and produces the following output:
Parent {a=1}
Parent {a=2}
Parent {a=3}
which is obviously wrong. There is nowhere in memory a Parent-like
object for which the A member is 2 and this call to print_all<Parent>
shold not compile at all (calling print_all<Child> is however fine).
This comes down to the fact that a Child* is convertible into a Parent*,
and that an array view is constructed to a pointer to the first element
and a size. The valid type pointed to that can be used with this
constructor are restricted using SFINAE, which requires that a
pointer to a member into the underlying container can be converted into a
pointer the array_view's data type.
This patch proposes to change the constraints on the gdb::array_view
ctor which accepts a container now requires that the (decayed) type of
the elements in the container match the (decayed) type of the array_view
being constructed.
Applying this change required minimum adjustment in GDB codebase, which
are also included in this patch.
Tested by rebuilding.
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A build with --disable-unit-tests currently run into:
...
ld: maint.o: in function \
`maintenance_selftest_completer(cmd_list_element*, completion_tracker&,
char const*, char const*)':
src/gdb/maint.c:1183: undefined reference to \
`selftests::for_each_selftest(
gdb::function_view<
void (std::__cxx11::basic_string<char,std::char_traits<char>,
std::allocator<char> > const&)>)'
...
Fix this by guarding the call to selftests::for_each_selftest in
maintenance_selftest_completer with GDB_SELF_TEST, such that the "-verbose"
completion still works.
Rebuild on x86_64-linux and ran gdb.gdb/unittest.exp.
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After the previous commit, it is easy to add completion for selftest
names. Again, this is not particularly high value, but I rarely touched
completion, so it served as a simple example to get some practice.
Change the for_each_selftest_ftype parameter to gdb::function_view, so
that we can pass a lambda that captures things.
Change-Id: I87cac299ddca9ca7eb0ffab78342e850a98d954c
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I saw the new -verbose switch to "maint selftests" and thought it would
be nice for it to use the option framework. For example, that makes
having completion easy. It's not that high value, given this is a
maintenance command, but I had never used the framework myself, so it
was a good way to practice.
This patch also adds the "maint set/show selftest verbose" setting. It
would be possible to use option framework without adding the setting,
but using the framework makes adding the option almost trivial, so I
thought why not.
Change-Id: I6687faa0713ff3da60b398253211777100094144
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cmd_list_element can contain a pointer to data that can be set and / or
shown. This is achieved with the void* VAR member which points to the
data that can be accessed, while the VAR_TYPE member (of type enum
var_types) indicates how to interpret the data pointed to.
With this pattern, the user of the cmd_list_element needs to know what
is the storage type associated with a given VAR_TYPES in order to do
the proper casting. No automatic safeguard is available to prevent
miss-use of the pointer. Client code typically looks something like:
switch (c->var_type)
{
case var_zuinteger:
unsigned int v = *(unsigned int*) c->var;
...
break;
case var_boolean:
bool v = *(bool *) c->var;
...
break;
...
}
This patch proposes to add an abstraction around the var_types and void*
pointer pair. The abstraction is meant to prevent the user from having
to handle the cast and verify that the data is read or written as a type
that is coherent with the setting's var_type. This is achieved by
introducing the struct setting which exposes a set of templated get /
set member functions. The template parameter is the type of the
variable that holds the referred variable.
Using those accessors allows runtime checks to be inserted in order to
ensure that the data pointed to has the expected type. For example,
instantiating the member functions with bool will yield something
similar to:
const bool &get<bool> () const
{
gdb_assert (m_var_type == var_boolean);
gdb_assert (m_var != nullptr);
return *static_cast<bool *> (m_var);
}
void set<bool> (const bool &var)
{
gdb_assert (m_var_type == var_boolean);
gdb_assert (m_var != nullptr);
*static_cast<bool *> (m_var) = var;
}
Using the new abstraction, our initial example becomes:
switch (c->var_type)
{
case var_zuinteger:
unsigned int v = c->var->get<unsigned int> ();
...
break;
case var_boolean:
bool v = c->var->get<bool> ();
...
break;
...
}
While the call site is still similar, the introduction of runtime checks
help ensure correct usage of the data.
In order to avoid turning the bulk of add_setshow_cmd_full into a
templated function, and following a suggestion from Pedro Alves, a
setting can be constructed from a pre validated type erased reference to
a variable. This is what setting::erased_args is used for.
Introducing an opaque abstraction to describe a setting will also make
it possible to use callbacks to retrieve or set the value of the setting
on the fly instead of pointing to a static chunk of memory. This will
be done added in a later commit.
Given that a cmd_list_element may or may not reference a setting, the
VAR and VAR_TYPES members of the struct are replaced with a
gdb::optional<setting> named VAR.
Few internal function signatures have been modified to take into account
this new abstraction:
-The functions value_from_setting, str_value_from_setting and
get_setshow_command_value_string used to have a 'cmd_list_element *'
parameter but only used it for the VAR and VAR_TYPE member. They now
take a 'const setting &' parameter instead.
- Similarly, the 'void *' and a 'enum var_types' parameters of
pascm_param_value and gdbpy_parameter_value have been replaced with a
'const setting &' parameter.
No user visible change is expected after this patch.
Tested on GNU/Linux x86_64, with no regression noticed.
Co-authored-by: Simon Marchi <simon.marchi@polymtl.ca>
Change-Id: Ie1d08c3ceb8b30b3d7bf1efe036eb8acffcd2f34
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The print_one_insn selftest in gdb/disasm-selftests.c contains:
...
/* If you want to see the disassembled instruction printed to gdb_stdout,
set verbose to true. */
static const bool verbose = false;
...
Make this parameter available in the maint selftest command using a new option
-verbose, such that we can do:
...
(gdb) maint selftest -verbose print_one_insn
...
Tested on x86_64-linux.
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When building gdb on openSUSE Leap 42.3, we trigger the case that
CXX_STD_THREAD is undefined, and run into:
...
gdb/maint.c: In function 'void maintenance_show_worker_threads \
(ui_file*, int, cmd_list_element*, const char*)':
gdb/maint.c:877:14: error: 'gdb::thread_pool' has not been declared
gdb::thread_pool::g_thread_pool->thread_count ());
^
Makefile:1647: recipe for target 'maint.o' failed
make[1]: *** [maint.o] Error 1
...
Fix this by handling the undefined CXX_STD_THREAD case in
maintenance_show_worker_threads, such that we get:
...
$ gdb -q -batch -ex "maint show worker-thread"
The number of worker threads GDB can use is 0.
...
Tested on x86_64-linux.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28312
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I wanted to see how many threads gdb thought it was using, but
"maint show worker-threads" only reported "unlimited". This patch
adds a show function so that it will now report the number of threads
gdb has started.
Regression tested on x86-64 Fedora 34.
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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
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Same idea as previous patch, but for add_alias_cmd. Remove the overload
that accepts the target command as a string (the target command name),
leaving only the one that takes the cmd_list_element.
gdb/ChangeLog:
* command.h (add_alias_cmd): Accept target as
cmd_list_element. Update callers.
Change-Id: I546311f411e9e7da9302322d6ffad4e6c56df266
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The alias creation functions currently accept a name to specify the
target command. They pass this to add_alias_cmd, which needs to lookup
the target command by name.
Given that:
- We don't support creating an alias for a command before that command
exists.
- We always use add_info_alias just after creating that target command,
and therefore have access to the target command's cmd_list_element.
... change add_com_alias to accept the target command as a
cmd_list_element (other functions are done in subsequent patches). This
ensures we don't create the alias before the target command, because you
need to get the cmd_list_element from somewhere when you call the alias
creation function. And it avoids an unecessary command lookup. So it
seems better to me in every aspect.
gdb/ChangeLog:
* command.h (add_com_alias): Accept target as
cmd_list_element. Update callers.
Change-Id: I24bed7da57221cc77606034de3023fedac015150
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Previously, the prefixname field of struct cmd_list_element was manually
set for prefix commands. This seems verbose and error prone as it
required every single call to functions adding prefix commands to
specify the prefix name while the same information can be easily
generated.
Historically, this was not possible as the prefix field was null for
many commands, but this was fixed in commit
3f4d92ebdf7f848b5ccc9e8d8e8514c64fde1183 by Philippe Waroquiers, so
we can rely on the prefix field being set when generating the prefix
name.
This commit also fixes a use after free in this scenario:
* A command gets created via Python (using the gdb.Command class).
The prefix name member is dynamically allocated.
* An alias to the new command is created. The alias's prefixname is set
to point to the prefixname for the original command with a direct
assignment.
* A new command with the same name as the Python command is created.
* The object for the original Python command gets freed and its
prefixname gets freed as well.
* The alias is updated to point to the new command, but its prefixname
is not updated so it keeps pointing to the freed one.
gdb/ChangeLog:
* command.h (add_prefix_cmd): Remove the prefixname argument as
it can now be generated automatically. Update all callers.
(add_basic_prefix_cmd): Ditto.
(add_show_prefix_cmd): Ditto.
(add_prefix_cmd_suppress_notification): Ditto.
(add_abbrev_prefix_cmd): Ditto.
* cli/cli-decode.c (add_prefix_cmd): Ditto.
(add_basic_prefix_cmd): Ditto.
(add_show_prefix_cmd): Ditto.
(add_prefix_cmd_suppress_notification): Ditto.
(add_prefix_cmd_suppress_notification): Ditto.
(add_abbrev_prefix_cmd): Ditto.
* cli/cli-decode.h (struct cmd_list_element): Replace the
prefixname member variable with a method which generates the
prefix name at runtime. Update all code reading the prefix
name to use the method, and remove all code setting it.
* python/py-cmd.c (cmdpy_destroyer): Remove code to free the
prefixname member as it's now a method.
(cmdpy_function): Determine if the command is a prefix by
looking at prefixlist, not prefixname.
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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
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This moves all the psymtab statistics printing code form symmisc.c to
psymtab.c. This changes the formatting of the output a little, but
considering that it is a maint command (and, I assume, a rarely used
one), this seems fine to me.
This change helps further dissociate the psymtab from the objfile. In
the end there will be no direct connect -- only via the
quick_symbol_functions interface.
gdb/ChangeLog
2021-03-20 Tom Tromey <tom@tromey.com>
* dwarf2/read.c (dwarf2_base_index_functions::print_stats): Add
print_bcache parameter.
* symfile-debug.c (objfile::print_stats): Add print_bcache
parameter.
* quick-symbol.h (struct quick_symbol_functions)
<print_stats>: Add print_bcache parameter.
* symmisc.c (print_symbol_bcache_statistics, count_psyms): Move
code to psymtab.c.
(print_objfile_statistics): Move psymtab code to psymtab.c.
* psymtab.c (count_psyms): Move from symmisc.c.
(psymbol_functions::print_stats): Print partial symbol and bcache
statistics. Add print_bcache parameter.
* objfiles.h (print_symbol_bcache_statistics): Don't declare.
(struct objfile) <print_stats>: Add print_bcache parameter.
* maint.c (maintenance_print_statistics): Update.
gdb/testsuite/ChangeLog
2021-03-20 Tom Tromey <tom@tromey.com>
* gdb.base/maint.exp: Update "maint print statistics" output.
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We already have a command 'maint info sections', this command prints
all sections from all known object files.
However, GDB maintains a second section table internally. This
section table is used when GDB wants to read directly from an object
file rather than actually reading memory on the target. As such only
some sections (the allocatable ones) are added to this secondary
section table.
I recently ran into a situation where some of GDB's optimisations for
reading directly from the files were not working. In 'maint info
sections' I could see that GDB knew about the object file, and did
know about the sections that it _should_ have been reading from. But
I couldn't ask GDB which sections it had copied into its secondary
section table.
This commit adds a new command 'maint info target-sections' that fills
this gap. This command lists only those sections that GDB has copied
into its secondary table.
You'll notice that the testsuite includes a comment indicating that
there's a bug in GDB. Normally this is not something I would add to
the testsuite, instead we should raise an actual bugzilla bug and then
mark an xfail, however, a later patch in this series will remove this
comment once the actual bug in GDB is fixed.
gdb/ChangeLog:
* NEWS: Mention new 'maint info target-sections' command.
* maint.c (maintenance_info_target_sections): New function.
(_initialize_maint_cmds): Register new command.
gdb/doc/ChangeLog:
* gdb.texinfo (Files): Document new 'maint info target-sections'
command.
gdb/testsuite/ChangeLog:
* gdb.base/maint-info-sections.exp: Add new tests.
(check_maint_info_target_sections_output): New proc.
|
|
The 'maintenance info sections' command currently takes a list of
filters on the command line. It can also accept the magic string
'ALLOBJ' which acts more like a command line flag, telling the command
to print information about all objfiles.
The manual has this to say about the options and filters:
... In addition, 'maint info sections' provides the following
command options (which may be arbitrarily combined): ...
Implying (to me at least) that I can do this:
(gdb) maint info sections ALLOBJ READONLY
to list all the read-only sections from all currently loaded object
files.
Unfortunately, this doesn't work. The READONLY filter will work, but
ALLOBJ will not be detected correctly.
It would be fairly simple to fix the ALLOBJ detection. However, I
dislike this mixing of command options (ALLOBJ) with command data (the
filters, e.g. READONLY, etc).
As this is a maintenance command, so not really intended for end
users, I think we can be a little more aggressive in "fixing" the
option parsing. So that's what I do in this commit.
The ALLOBJ mechanism is replaced with a real command
option (-all-objects). The rest of the command operates just as
before. The example above would now become:
(gdb) maint info sections -all-objects READONLY
The manual has been updated, and I added a NEWS entry to document the
change.
gdb/ChangeLog:
* NEWS: Mention changes to 'maint info sections'.
* maint.c (match_substring): Return a bool, fix whitespace issue.
(struct single_bfd_flag_info): New struct.
(bfd_flag_info): New static global.
(match_bfd_flags): Return a bool, use bfd_flag_info.
(print_bfd_flags): Use bfd_flag_info.
(maint_print_section_info): Delete trailing whitespace.
(struct maint_info_sections_opts): New struct.
(maint_info_sections_option_defs): New static global.
(maint_info_sections_completer): New function.
(maintenance_info_sections): Use option parsing mechanism.
(_initialize_maint_cmds): Register command completer.
gdb/doc/ChangeLog:
* gdb.texinfo (Files): Update documentation for 'maint info
sections'.
gdb/testsuite/ChangeLog:
* gdb.base/maint-info-sections.exp: Update expected output, and
add additional tests. Again.
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The 'maint info sections' command is split into two blocks or work,
first if there's an executable then the sections from the executable,
and optionally all other loaded object files are printed. Then all
the sections from any core file are printed.
I ran into a situation where (for various reasons) I wasn't using a
main executable. Instead I connected to a remote target and used
add-symbol-file. This allowed me to debug an image that was already
loaded on the remote system.
Unfortunately, when I tried to use 'maint info sections' I saw
nothing. The reason is that the loop over all object files is hidden
behind a check that we have a main executable.
This commit removes this check and merges together some duplicate
code. I also (I think) made the output of this command cleaner.
Here is the original output of 'maint info sections':
Exec file:
`/tmp/hello.x', file type elf64-x86-64.
[0] 0x004002a8->0x004002c4 at 0x000002a8: .interp ALLOC LOAD READONLY DATA HAS_CONTENTS
[1] 0x004002c4->0x004002e8 at 0x000002c4: .note.gnu.build-id ALLOC LOAD READONLY DATA HAS_CONTENTS
...
And my modified output:
Exec file: `/home/andrew/tmp/hello.x', file type elf64-x86-64.
[0] 0x004002a8->0x004002c4 at 0x000002a8: .interp ALLOC LOAD READONLY DATA HAS_CONTENTS
[1] 0x004002c4->0x004002e8 at 0x000002c4: .note.gnu.build-id ALLOC LOAD READONLY DATA HAS_CONTENTS
...
The forced newline after 'Exec file: ' has been removed. This is now
a wrap point (in case the filename is very long).
Here is the original output of 'maint info sections ALLOBJ':
Exec file:
`/tmp/hello.x', file type elf64-x86-64.
Object file: /tmp/hello.x
[0] 0x004002a8->0x004002c4 at 0x000002a8: .interp ALLOC LOAD READONLY DATA HAS_CONTENTS
[1] 0x004002c4->0x004002e8 at 0x000002c4: .note.gnu.build-id ALLOC LOAD READONLY DATA HAS_CONTENTS
...
Object file: /lib64/ld-linux-x86-64.so.2
[0] 0x7ffff7fd12a8->0x7ffff7fd12c8 at 0x000002a8: .note.gnu.property ALLOC LOAD READONLY DATA HAS_CONTENTS
[1] 0x7ffff7fd12c8->0x7ffff7fd12ec at 0x000002c8: .note.gnu.build-id ALLOC LOAD READONLY DATA HAS_CONTENTS
...
And my modified output:
Exec file: `/tmp/hello.x', file type elf64-x86-64.
[0] 0x004002a8->0x004002c4 at 0x000002a8: .interp ALLOC LOAD READONLY DATA HAS_CONTENTS
[1] 0x004002c4->0x004002e8 at 0x000002c4: .note.gnu.build-id ALLOC LOAD READONLY DATA HAS_CONTENTS
...
Object file: `/lib64/ld-linux-x86-64.so.2', file type elf64-x86-64.
[0] 0x7ffff7fd12a8->0x7ffff7fd12c8 at 0x000002a8: .note.gnu.property ALLOC LOAD READONLY DATA HAS_CONTENTS
[1] 0x7ffff7fd12c8->0x7ffff7fd12ec at 0x000002c8: .note.gnu.build-id ALLOC LOAD READONLY DATA HAS_CONTENTS
...
The executable now only gets a single header line. The header line
for the additional object files is no longer indented as it was
before, and the line is laid out in a similar style to the main
executable line (with quotes and file type information).
And of course, the biggest change. If GDB is started with no
executable, but then the user does 'add-symbol-file ....' followed by
'maint info sections ALLOBJ', previously they got nothing, now they
get:
Object file: `/tmp/hello.x', file type elf64-x86-64.
[0] 0x004002a8->0x004002c4 at 0x000002a8: .interp ALLOC LOAD READONLY DATA HAS_CONTENTS
[1] 0x004002c4->0x004002e8 at 0x000002c4: .note.gnu.build-id ALLOC LOAD READONLY DATA HAS_CONTENTS
...
gdb/ChangeLog:
* maint.c (print_bfd_section_info_maybe_relocated): Delete,
functionality merged into...
(maint_print_all_sections): ...this new function.
(maintenance_info_sections): Make use of maint_print_all_sections,
allow all objects to be printed even where there's no executable.
gdb/testsuite/ChangeLog:
* gdb.base/maint-info-sections.exp: Update expected output, and
add additional tests.
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Add a new obj_section function to bound_minimal_symbol, this just
calls obj_section on the contained minimal_symbol passing in the
contained objfile.
This allows some minor code simplification in a few places.
There should be no user visible changes after this commit.
gdb/ChangeLog:
* breakpoint.c (resolve_sal_pc): Make use of
bound_minimal_symbol::obj_section.
* maint.c (maintenance_translate_address): Likewise.
* minsyms.c (minimal_symbol_upper_bound): Likewise.
* minsyms.h (struct bound_minimal_symbol) <obj_section>: New
member function.
* printcmd.c (info_address_command): Make use of
bound_minimal_symbol::obj_section.
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Replace the two macros SYMBOL_OBJ_SECTION and MSYMBOL_OBJ_SECTION with
a member function on general_symbol_info.
There should be no user visible change after this commit.
gdb/ChangeLog:
* breakpoint.c (resolve_sal_pc): Replace SYMBOL_OBJ_SECTION and
MSYMBOL_OBJ_SECTION.
* findvar.c (language_defn::read_var_value): Likewise.
* infcmd.c (jump_command): Likewise.
* linespec.c (minsym_found): Likewise.
* maint.c (maintenance_translate_address): Likewise.
* minsyms.c (lookup_minimal_symbol_by_pc_section): Likewise.
(minimal_symbol_upper_bound): Likewise.
* parse.c (find_minsym_type_and_address): Likewise.
(operator_check_standard): Likewise.
* printcmd.c (info_address_command): Likewise.
* symmisc.c (dump_msymbols): Likewise.
(print_symbol): Likewise.
* symtab.c (general_symbol_info::obj_section): Define new
function.
(fixup_symbol_section): Replace SYMBOL_OBJ_SECTION.
(find_pc_sect_compunit_symtab): Likewise.
(find_function_start_sal): Likewise.
(skip_prologue_sal): Replace SYMBOL_OBJ_SECTION and
MSYMBOL_OBJ_SECTION.
* symtab.h (struct general_symbol_info) <obj_section>: Declare new
function.
(SYMBOL_OBJ_SECTION): Delete.
(MSYMBOL_OBJ_SECTION): Delete.
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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.
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We currently have two flushing commands 'flushregs' and 'maint
flush-symbol-cache'. I'm planning to add at least one more so I
thought it might be nice if we bundled these together into one place.
And so I created the 'maint flush ' command prefix. Currently there
are two commands:
(gdb) maint flush symbol-cache
(gdb) maint flush register-cache
Unfortunately, even though both of the existing flush commands are
maintenance commands, I don't know how keen we about deleting existing
commands for fear of breaking things in the wild. So, both of the
existing flush commands 'maint flush-symbol-cache' and 'flushregs' are
still around as deprecated aliases to the new commands.
I've updated the testsuite to use the new command syntax, and updated
the documentation too.
gdb/ChangeLog:
* NEWS: Mention new commands, and that the old commands are now
deprecated.
* cli/cli-cmds.c (maintenanceflushlist): Define.
* cli/cli-cmds.h (maintenanceflushlist): Declare.
* maint.c (_initialize_maint_cmds): Initialise
maintenanceflushlist.
* regcache.c: Add 'cli/cli-cmds.h' include.
(reg_flush_command): Add header comment.
(_initialize_regcache): Create new 'maint flush register-cache'
command, make 'flushregs' an alias.
* symtab.c: Add 'cli/cli-cmds.h' include.
(_initialize_symtab): Create new 'maint flush symbol-cache'
command, make old command an alias.
gdb/doc/ChangeLog:
* gdb.texinfo (Symbols): Document 'maint flush symbol-cache'.
(Maintenance Commands): Document 'maint flush register-cache'.
gdb/testsuite/ChangeLog:
* gdb.base/c-linkage-name.exp: Update to use new 'maint flush ...'
commands.
* gdb.base/killed-outside.exp: Likewise.
* gdb.opt/inline-bt.exp: Likewise.
* gdb.perf/gmonster-null-lookup.py: Likewise.
* gdb.perf/gmonster-print-cerr.py: Likewise.
* gdb.perf/gmonster-ptype-string.py: Likewise.
* gdb.python/py-unwind.exp: Likewise.
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I happened to notice that expression completion did not work correctly
for "maint print type". This patch adds the appropriate completer
there.
gdb/ChangeLog
2020-12-07 Tom Tromey <tromey@adacore.com>
* maint.c (_initialize_maint_cmds): Use expression command
completer for "maint print type".
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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.
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Since the "maintenance info sections" helper functions are not used
through a callback with a void* parameter anymore, the
maint_print_section_data is not needed anymore. Remove it, replace it
with regular parameters.
Break out the index digits computation in its own function.
gdb/ChangeLog:
* maint.c (index_digits): New function.
(struct maint_print_section_data): Remove.
(print_bfd_section_info): Remove print_data parameter, add arg
and index_digits.
(print_objfile_section_info): Likewise.
(print_bfd_section_info_maybe_relocated): Likewise (plus
objfile).
(maintenance_info_sections): Adjust calls.
Change-Id: Idfeca5e7e0a95e72fade15cb1488058865c0258e
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I wanted to make a nicer / type-safe interface for
bfd_map_over_sections, avoiding the `void *` data parameter.
My first shot was to make a wrapper for bfd_map_over_sections,
gdb_bfd_map_over_sections that took a gdb::function_view.
However, I think that a range adapter gives nicer and simpler code, as a
simple for loop is easier to read than a callback / lambda function. So
here it is, it uses next_iterator and next_adapter, so it's not much
code.
As an example, I ported maintenance_info_sections and friends to use it.
The maint_print_section_data type could probably be removed now, but I
didn't want to do too much in one patch.
gdb/ChangeLog:
* gdb_bfd.h (gdb_bfd_section_iterator, gdb_bfd_section_range,
gdb_bfd_sections): New.
* maint.c (print_bfd_section_info): Change param type to
maint_print_section_data.
(print_objfile_section_info): Likewise.
(print_bfd_section_info_maybe_relocated): Likewise.
(maintenance_info_sections): Use gdb_bfd_sections.
Change-Id: Ib496f6b0a0eb7aadb10da1dd381304014d934ea0
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Introduce the gdb_argv::as_array_view method, as a way to easily pass
the parsed arguments array to a function taking an array view. There is
currently one caller where we can use this (which prompted the
suggestion to implement this method).
Add some selftests for the new method, which at the same time test a
little bit gdb_argv. As far as I know, it's not tested currently.
gdb/ChangeLog:
* utils.h (class gdb_argv) <as_array_view>: New method.
* utils.c (gdb_argv_as_array_view_test): New.
(_initialize_utils): Register selftest.
* maint.c (maintenance_selftest): Use the new method.
Change-Id: I0645037613ed6549aabe60f14a36f3494513b177
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I found myself wanting to run a few specific selftests while developing.
I thought it would be nice to be able to provide multiple test names
when running `maintenant selftests`. The arguments to that command is
currently interpreted as a single filter (not split by spaces), it now
becomes a list a filters, split by spaces. A test is executed when it
matches at least one filter.
Here's an example of the result in GDB:
(gdb) maintenance selftest xml
Running selftest xml_escape_text.
Running selftest xml_escape_text_append.
Ran 2 unit tests, 0 failed
(gdb) maintenance selftest xml unord
Running selftest unordered_remove.
Running selftest xml_escape_text.
Running selftest xml_escape_text_append.
Ran 3 unit tests, 0 failed
(gdb) maintenance selftest xml unord foobar
Running selftest unordered_remove.
Running selftest xml_escape_text.
Running selftest xml_escape_text_append.
Ran 3 unit tests, 0 failed
Since the selftest machinery is also shared with gdbserver, I also
adapted gdbserver. It accepts a `--selftest` switch, which accepts an
optional filter argument. I made it so you can now pass `--selftest`
multiple time to add filters.
It's not so useful right now though: there's only a single selftest
right now in GDB and it's for an architecture I can't compile. So I
tested by adding dummy tests, here's an example of the result:
$ ./gdbserver --selftest=foo
Running selftest foo.
foo
Running selftest foobar.
foobar
Ran 2 unit tests, 0 failed
$ ./gdbserver --selftest=foo --selftest=bar
Running selftest bar.
bar
Running selftest foo.
foo
Running selftest foobar.
foobar
Ran 3 unit tests, 0 failed
gdbsupport/ChangeLog:
* selftest.h (run_tests): Change parameter to array_view.
* selftest.c (run_tests): Change parameter to array_view and use
it.
gdb/ChangeLog:
* maint.c (maintenance_selftest): Split args and pass array_view
to run_tests.
gdbserver/ChangeLog:
* server.cc (captured_main): Accept multiple `--selftest=`
options. Pass all `--selftest=` arguments to run_tests.
Change-Id: I422bd49f08ea8095ae174c5d66a2dd502a59613a
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Currently there are many prefix commands that do nothing but call
either help_list or cmd_show_list. I happened to notice that one such
call, for "set print type", used the wrong command list parameter,
causing incorrect output.
Rather than fix this bug in isolation, I decided to eliminate this
possibility by adding two new ways to add prefix commands, which
simply route the call to help_list or cmd_show_list, as appropriate.
This makes it impossible for a mismatch to occur.
In some cases, a bit of output was removed; however, I don't think
this output in general was very useful. It seemed redundant with
what's already printed by help_list. A representative example is this
hunk, removed from ada-lang.c:
- printf_unfiltered (_(\
-"\"set ada\" must be followed by the name of a setting.\n"));
This simplified the CLI style set/show commands quite a bit, and
allowed the deletion of a macro.
This also cleans up some unusual code in windows-tdep.c.
Tested on x86-64 Fedora 30. Note that I have no way to build the
go32-nat.c change.
gdb/ChangeLog
2020-04-17 Tom Tromey <tromey@adacore.com>
* auto-load.c (show_auto_load_cmd): Remove.
(auto_load_show_cmdlist_get): Use add_show_prefix_cmd.
* arc-tdep.c (_initialize_arc_tdep): Use add_show_prefix_cmd.
(maintenance_print_arc_command): Remove.
* tui/tui-win.c (tui_command): Remove.
(tui_get_cmd_list): Use add_basic_prefix_cmd.
* tui/tui-layout.c (tui_layout_command): Remove.
(_initialize_tui_layout): Use add_basic_prefix_cmd.
* python/python.c (user_set_python, user_show_python): Remove.
(_initialize_python): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* guile/guile.c (set_guile_command, show_guile_command): Remove.
(install_gdb_commands): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
(info_guile_command): Remove.
* dwarf2/read.c (set_dwarf_cmd, show_dwarf_cmd): Remove.
(_initialize_dwarf2_read): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* cli/cli-style.h (class cli_style_option) <add_setshow_commands>:
Remove do_set and do_show parameters.
* cli/cli-style.c (set_style, show_style): Remove.
(_initialize_cli_style): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
(cli_style_option::add_setshow_commands): Remove do_set and
do_show parameters.
(cli_style_option::add_setshow_commands): Use
add_basic_prefix_cmd, add_show_prefix_cmd.
(STYLE_ADD_SETSHOW_COMMANDS): Remove macro.
(set_style_name): Remove.
* cli/cli-dump.c (dump_command, append_command): Remove.
(srec_dump_command, ihex_dump_command, verilog_dump_command)
(tekhex_dump_command, binary_dump_command)
(binary_append_command): Remove.
(_initialize_cli_dump): Use add_basic_prefix_cmd.
* windows-tdep.c (w32_prefix_command_valid): Remove global.
(init_w32_command_list): Remove; move into ...
(_initialize_windows_tdep): ... here. Use add_basic_prefix_cmd.
* valprint.c (set_print, show_print, set_print_raw)
(show_print_raw): Remove.
(_initialize_valprint): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* typeprint.c (set_print_type, show_print_type): Remove.
(_initialize_typeprint): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* record.c (set_record_command, show_record_command): Remove.
(_initialize_record): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* cli/cli-cmds.c (_initialize_cli_cmds): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
(info_command, show_command, set_debug, show_debug): Remove.
* top.h (set_history, show_history): Don't declare.
* top.c (set_history, show_history): Remove.
* target-descriptions.c (set_tdesc_cmd, show_tdesc_cmd)
(unset_tdesc_cmd): Remove.
(_initialize_target_descriptions): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* symtab.c (info_module_command): Remove.
(_initialize_symtab): Use add_basic_prefix_cmd.
* symfile.c (overlay_command): Remove.
(_initialize_symfile): Use add_basic_prefix_cmd.
* sparc64-tdep.c (info_adi_command): Remove.
(_initialize_sparc64_adi_tdep): Use add_basic_prefix_cmd.
* sh-tdep.c (show_sh_command, set_sh_command): Remove.
(_initialize_sh_tdep): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* serial.c (serial_set_cmd, serial_show_cmd): Remove.
(_initialize_serial): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* ser-tcp.c (set_tcp_cmd, show_tcp_cmd): Remove.
(_initialize_ser_tcp): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* rs6000-tdep.c (set_powerpc_command, show_powerpc_command)
(_initialize_rs6000_tdep): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* riscv-tdep.c (show_riscv_command, set_riscv_command)
(show_debug_riscv_command, set_debug_riscv_command): Remove.
(_initialize_riscv_tdep): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* remote.c (remote_command, set_remote_cmd): Remove.
(_initialize_remote): Use add_basic_prefix_cmd.
* record-full.c (set_record_full_command)
(show_record_full_command): Remove.
(_initialize_record_full): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* record-btrace.c (cmd_set_record_btrace)
(cmd_show_record_btrace, cmd_set_record_btrace_bts)
(cmd_show_record_btrace_bts, cmd_set_record_btrace_pt)
(cmd_show_record_btrace_pt): Remove.
(_initialize_record_btrace): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* ravenscar-thread.c (set_ravenscar_command)
(show_ravenscar_command): Remove.
(_initialize_ravenscar): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* mips-tdep.c (show_mips_command, set_mips_command)
(_initialize_mips_tdep): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* maint.c (maintenance_command, maintenance_info_command)
(maintenance_check_command, maintenance_print_command)
(maintenance_set_cmd, maintenance_show_cmd): Remove.
(_initialize_maint_cmds): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
(show_per_command_cmd): Remove.
* maint-test-settings.c (maintenance_set_test_settings_cmd):
Remove.
(maintenance_show_test_settings_cmd): Remove.
(_initialize_maint_test_settings): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* maint-test-options.c (maintenance_test_options_command):
Remove.
(_initialize_maint_test_options): Use add_basic_prefix_cmd.
* macrocmd.c (macro_command): Remove
(_initialize_macrocmd): Use add_basic_prefix_cmd.
* language.c (set_check, show_check): Remove.
(_initialize_language): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* infcmd.c (unset_command): Remove.
(_initialize_infcmd): Use add_basic_prefix_cmd.
* i386-tdep.c (set_mpx_cmd, show_mpx_cmd): Remove.
(_initialize_i386_tdep): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* go32-nat.c (go32_info_dos_command): Remove.
(_initialize_go32_nat): Use add_basic_prefix_cmd.
* cli/cli-decode.c (do_prefix_cmd, add_basic_prefix_cmd)
(do_show_prefix_cmd, add_show_prefix_cmd): New functions.
* frame.c (set_backtrace_cmd, show_backtrace_cmd): Remove.
(_initialize_frame): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* dcache.c (set_dcache_command, show_dcache_command): Remove.
(_initialize_dcache): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* cp-support.c (maint_cplus_command): Remove.
(_initialize_cp_support): Use add_basic_prefix_cmd.
* btrace.c (maint_btrace_cmd, maint_btrace_set_cmd)
(maint_btrace_show_cmd, maint_btrace_pt_set_cmd)
(maint_btrace_pt_show_cmd, _initialize_btrace): Use
add_basic_prefix_cmd, add_show_prefix_cmd.
* breakpoint.c (save_command): Remove.
(_initialize_breakpoint): Use add_basic_prefix_cmd.
* arm-tdep.c (set_arm_command, show_arm_command): Remove.
(_initialize_arm_tdep): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* ada-lang.c (maint_set_ada_cmd, maint_show_ada_cmd)
(set_ada_command, show_ada_command): Remove.
(_initialize_ada_language): Use add_basic_prefix_cmd,
add_show_prefix_cmd.
* command.h (add_basic_prefix_cmd, add_show_prefix_cmd): Declare.
gdb/testsuite/ChangeLog
2020-04-17 Tom Tromey <tromey@adacore.com>
* gdb.cp/maint.exp (test_help): Simplify multiple_help_body.
Update tests.
* gdb.btrace/cpu.exp: Update tests.
* gdb.base/maint.exp: Update tests.
* gdb.base/default.exp: Update tests.
* gdb.base/completion.exp: Update tests.
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