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Author SHA1 Message Date
Simon Marchi
a2e3cce344 gdb/solib: C++ify solib_ops 
Convert solib_ops into an abstract base class (with abstract methods,
some of them with default implementations) and convert all the existing
solib_ops instances to solib_ops derived classes / implementations.

Prior to this patch, solib_ops is a structure holding function pointers,
of which there are only a handful of global instances (in the
`solib-*.c` files).  When passing an `solib_ops *` around, it's a
pointer to one of these instances.  After this patch, there are no more
global solib_ops instances.  Instances are created as needed and stored
in struct program_space.  These instances could eventually be made to
contain the program space-specific data, which is currently kept in
per-program space registries (I have some pending patches for that).

Prior to this patch, `gdbarch_so_ops` is a gdbarch method that returns a
pointer to the appropriate solib_ops implementation for the gdbarch.
This is replaced with the `gdbarch_make_solib_ops` method, which returns
a new instance of the appropriate solib_ops implementation for this
gdbarch.  This requires introducing some factory functions for the
various solib_ops implementation, to be used as `gdbarch_make_solib_ops`
callbacks.  For instance:

    solib_ops_up
    make_linux_ilp32_svr4_solib_ops ()
    {
      return std::make_unique<linux_ilp32_svr4_solib_ops> ();
    }

The previous code is full of cases of tdep files copying some base
solib_ops implementation, and overriding one or more function pointer
(see ppc_linux_init_abi, for instance).  I tried to convert all of this
is a class hierarchy.  I like that it's now possible to get a good
static view of all the existing solib_ops variants.  The hierarchy looks
like this:

    solib_ops
    ├── aix_solib_ops
    ├── darwin_solib_ops
    ├── dsbt_solib_ops
    ├── frv_solib_ops
    ├── rocm_solib_ops
    ├── svr4_solib_ops
    │   ├── ilp32_svr4_solib_ops
    │   ├── lp64_svr4_solib_ops
    │   ├── linux_ilp32_svr4_solib_ops
    │   │   ├── mips_linux_ilp32_svr4_solib_ops
    │   │   └── ppc_linux_ilp32_svr4_solib_ops
    │   ├── linux_lp64_svr4_solib_ops
    │   │   └── mips_linux_lp64_svr4_solib_ops
    │   ├── mips_nbsd_ilp32_svr4_solib_ops
    │   ├── mips_nbsd_lp64_svr4_solib_ops
    │   ├── mips_fbsd_ilp32_svr4_solib_ops
    │   └── mips_fbsd_lp64_svr4_solib_ops
    └── target_solib_ops
        └── windows_solib_ops

The solib-svr4 code has per-arch specialization to provide a
link_map_offsets, containing the offsets of the interesting fields in
`struct link_map` on that particular architecture.  Prior to this patch,
arches would set a callback returning the appropriate link_map_offsets
by calling `set_solib_svr4_fetch_link_map_offsets`, which also happened
to set the gdbarch's so_ops to `&svr_so_ops`.  I converted this to an
abstract virtual method of `struct svr4_solib_ops`, meaning that all
classes deriving from svr4_solib_ops must provide a method returning the
appropriate link_map_offsets for the architecture.  I renamed
`set_solib_svr4_fetch_link_map_offsets` to `set_solib_svr4_ops`.  This
function is still necessary because it also calls
set_gdbarch_iterate_over_objfiles_in_search_order, but if it was not for
that, we could get rid of it.

There is an instance of CRTP in mips-linux-tdep.c, because both
mips_linux_ilp32_svr4_solib_ops and mips_linux_lp64_svr4_solib_ops need
to derive from different SVR4 base classes (linux_ilp32_svr4_solib_ops
and linux_lp64_svr4_solib_ops), but they both want to override the
in_dynsym_resolve_code method with the same implementation.

The solib_ops::supports_namespaces method is new: the support for
namespaces was previously predicated by the presence or absence of a
find_solib_ns method.  It now needs to be explicit.

There is a new progspace::release_solib_ops method, which is only needed
for rocm_solib_ops.  For the moment, rocm_solib_ops replaces and wraps
the existing svr4_solib_ops instance, in order to combine the results of
the two.  The plan is to have a subsequent patch to allow program spaces to have
multiple solib_ops, removing the need for release_solib_ops.

Speaking of rocm_solib_ops: it previously overrode only a few methods by
copying svr4_solib_ops and overwriting some function pointers.  Now, it
needs to implement all the methods that svr4_solib_ops implements, in
order to forward the call.  Otherwise, the default solib_ops method
would be called, hiding the svr4_solib_ops implementation.  Again, this
can be removed once we have support for multiple solib_ops in a
program_space.

There is also a small change in how rocm_solib_ops is activated.  Prior
to this patch, it's done at the end of rocm_update_solib_list.  Since it
overrides the function pointer in the static svr4_solib_ops, and then
overwrites the host gdbarch, so_ops field, it's something that happens
only once.  After the patch though, we need to set rocm_solib_ops in all
the program spaces that appear.  We do this in
rocm_solib_target_inferior_created and in the new
rocm_solib_target_inferior_execd.  After this, I will explore doing a
change where rocm_solib_ops is only set when we detect the ROCm runtime
is loaded.

Change-Id: I5896b5bcbf8bdb024d67980380feba1ffefaa4c9
Approved-By: Pedro Alves <pedro@palves.net>
 2025-06-26 14:08:31 -04:00
Tom Tromey
5fe70629ce Change file initialization to use INIT_GDB_FILE macro 
This patch introduces a new macro, INIT_GDB_FILE.  This is used to
replace the current "_initialize_" idiom when introducing a per-file
initialization function.  That is, rather than write:

    void _initialize_something ();
    void
    _initialize_something ()
    {
       ...
    }

... now you would write:

    INIT_GDB_FILE (something)
    {
       ...
    }

The macro handles both the declaration and definition of the function.

The point of this approach is that it makes it harder to accidentally
cause an initializer to be omitted; see commit 2711e475 ("Ensure
cooked_index_entry self-tests are run").  Specifically, the regexp now
used by make-init-c seems harder to trick.

New in v2: un-did some erroneous changes made by the script.

The bulk of this patch was written by script.
Regression tested on x86-64 Fedora 41.
 2025-06-26 06:15:59 -06:00
Kevin Buettner
c34309bea2 Internal TLS support for aarch64, x86_64, riscv, ppc64, and s390x 
For each architecture, aarch64, x86_64, riscv, ppc64, and s390x,
this commit defines a suitable 'get_tls_dtv_addr' method and,
when necessary, a 'get_tls_dtp_offset' method.

It also registers svr4_tls_get_thread_local_address, defined in
svr4-tls-tdep.c (in an earlier commit), as the
get_thread_local_address gdbarch method.  It also registers its
architecture specific code using svr4_tls_register_tls_methods().

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=24548
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31563

Tested-By: Luis Machado <luis.machado@arm.com>
Approved-By: Luis Machado <luis.machado@arm.com>
 2025-04-24 09:54:42 -07:00
Tom Tromey
d01e823438 Update copyright dates to include 2025 
This updates the copyright headers to include 2025.  I did this by
running gdb/copyright.py and then manually modifying a few files as
noted by the script.

Approved-By: Eli Zaretskii <eliz@gnu.org>
 2025-04-08 10:54:39 -06:00
Tom de Vries
432eca4113 [gdb/record] Make enum gdb_syscall value names consistent 
In enum gdb_syscall, there are 3 entries that do not have the gdb_sys_ prefix
...
$ grep gdb_old_ gdb/linux-record.h
  gdb_old_select = 82,
  gdb_old_readdir = 89,
  gdb_old_mmap = 90,
...
like all the other entries:
...
  gdb_sys_restart_syscall = 0,
  gdb_sys_exit = 1,
  gdb_sys_fork = 2,
  gdb_sys_read = 3,
...

The three correspond to these entries in
arch/x86/entry/syscalls/syscall_32.tbl:
...
<number>  <abi>   <name>     <entry point>      [<compat entry point> [noreturn]]
82        i386    select     sys_old_select     compat_sys_old_select
89        i386    readdir    sys_old_readdir    compat_sys_old_readdir
90        i386    mmap       sys_old_mmap       compat_sys_ia32_mmap
...

As we can see, the enum uses the entry point name, but without the sys_
prefix.

There doesn't seem to be a good reason for this.

There's another enum value:
...
  gdb_sys_old_getrlimit = 76,
...
corresponding to:
...
76        i386    getrlimit  sys_old_getrlimit  compat_sys_old_getrlimit
...
where we do use the sys_ prefix.

Fix this by consistenly using the gdb_sys_ prefix in enum gdb_syscall.

No functional changes.

Approved-By: Simon Marchi <simon.marchi@efficios.com>
 2025-03-31 20:30:48 +02:00
Tom de Vries
6f3dab758f [gdb/tdep] Fix mmap syscall mapping 
There are a few spots where an mmap system call is mapped onto enum
gdb_syscall value gdb_sys_mmap2.

Strictly speaking, this is incorrect.

Fix this by mapping to enum gdb_syscall value gdb_old_mmap instead.

No functional changes: both gdb_old_mmap and gdb_sys_mmap2 are handled the
same in record_linux_system_call.

Tested by rebuilding on x86_64-linux.
 2025-03-30 16:45:25 +02:00
Tom de Vries
f9f0332200 [gdb/record] Support recording syscall accept4 
While reviewing the enum gdb_syscall entries with values >= 500, I noticed
that gdb_sys_accept exists, but gdb_sys_accept4 doesn't, while recording
support is essentially the same, given that the difference in interface is
only an extra int parameter:
...
int accept (int sockfd, struct sockaddr *addr, socklen_t *addrlen);
int accept4 (int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
...

Fix this by:
- adding gdb_sys_accept4,
- supporting it in record_linux_system_call alongside gdb_sys_accept, and
- mapping to gdb_sys_accept4 in various syscall canonicalization functions.

The usual thing to do before the rewrite of i386_canonicalize_syscall would
have been to use the value from arch/x86/entry/syscalls/syscall_32.tbl:
...
  gdb_sys_accept4 = 364,
...
but that's no longer necessary, so instead we use some >= 500 value:
...
  gdb_sys_accept4 = 533,
...
to steer clear of the space where ppc_canonicalize_syscall and
s390_canonicalize_syscall do hard-coded number magic.

Tested on x86_64-linux, with and without target board unix/-m32, and
aarch64-linux.

Approved-By: Guinevere Larsen <guinevere@redhat.com>
 2025-03-13 07:41:51 +01:00
Christina Schimpe
27e82ad68b LAM: Enable tagged pointer support for watchpoints. 
The Intel (R) linear address masking (LAM) feature modifies the checking
applied to 64-bit linear addresses.  With this so-called "modified
canonicality check" the processor masks the metadata bits in a pointer
before using it as a linear address.  LAM supports two different modes that
differ regarding which pointer bits are masked and can be used for
metadata: LAM 48 resulting in a LAM width of 15 and LAM 57 resulting in a
LAM width of 6.

This patch adjusts watchpoint addresses based on the currently enabled
LAM mode using the untag mask provided in the /proc/<pid>/status file.
As LAM can be enabled at runtime or as the configuration may change
when entering an enclave, GDB checks enablement state each time a watchpoint
is updated.

In contrast to the patch implemented for ARM's Top Byte Ignore "Clear
non-significant bits of address on memory access", it is not necessary to
adjust addresses before they are passed to the target layer cache, as
for LAM tagged pointers are supported by the system call to read memory.
Additionally, LAM applies only to addresses used for data accesses.
Thus, it is sufficient to mask addresses used for watchpoints.

The following examples are based on a LAM57 enabled program.
Before this patch tagged pointers were not supported for watchpoints:
~~~
(gdb) print pi_tagged
$2 = (int *) 0x10007ffffffffe004
(gdb) watch *pi_tagged
Hardware watchpoint 2: *pi_tagged
(gdb) c
Continuing.
Couldn't write debug register: Invalid argument.
~~~~

Once LAM 48 or LAM 57 is enabled for the current program, GDB can now
specify watchpoints for tagged addresses with LAM width 15 or 6,
respectively.

Approved-By: Felix Willgerodt <felix.willgerodt@intel.com>
 2024-11-18 13:36:16 +00:00
Schimpe, Christina
fc14343205 gdb, gdbserver, python, testsuite: Remove MPX. 
GDB deprecated the commands "show/set mpx bound" in GDB 15.1, as Intel
listed Intel(R) Memory Protection Extensions (MPX) as removed in 2019.
MPX is also deprecated in gcc (since v9.1), the linux kernel (since v5.6)
and glibc (since v2.35).  Let's now remove MPX support in GDB completely.

This includes the removal of:
- MPX functionality including register support
- deprecated mpx commands
- i386 and amd64 implementation of the hooks report_signal_info and
  get_siginfo_type
- tests
- and pretty printer.

We keep MPX register numbers to not break compatibility with old gdbservers.

Approved-By: Felix Willgerodt <felix.willgerodt@intel.com>
 2024-09-25 11:06:57 +00:00
Andrew Burgess
646d754d14 gdb/gdbserver: share x86/linux tdesc caching 
This commit builds on the previous series of commits to share the
target description caching code between GDB and gdbserver for
x86/Linux targets.

The objective of this commit is to move the four functions (2 each of)
i386_linux_read_description and amd64_linux_read_description into the
gdb/arch/ directory and combine them so we have just a single copy of
each.  Then GDB, gdbserver, and the in-process-agent (IPA) will link
against these shared functions.

One curiosity with this patch is the function
x86_linux_post_init_tdesc.  On the gdbserver side the two functions
amd64_linux_read_description and i386_linux_read_description have some
functionality that is not present on the GDB side, there is some
additional configuration that is performed as each target description
is created, to setup the expedited registers.

To support this I've added the function x86_linux_post_init_tdesc.
This function is called from the two *_linux_read_description
functions, but is implemented separately for GDB and gdbserver.

An alternative approach that avoids adding x86_linux_post_init_tdesc
would be to have x86_linux_tdesc_for_tid return a non-const target
description, then in x86_target::low_arch_setup we could inspect the
target description to figure out if it is 64-bit or not, and modify
the target description as needed.  In the end I think that adding the
x86_linux_post_init_tdesc function is the simpler solution.

The contents of gdbserver/linux-x86-low.cc have moved to
gdb/arch/x86-linux-tdesc-features.c, and gdbserver/linux-x86-tdesc.h
has moved to gdb/arch/x86-linux-tdesc-features.h, this change leads to
some updates in the #includes in the gdbserver/ directory.

This commit also changes how target descriptions are cached.
Previously both GDB and gdbserver used static C-style arrays to act as
the tdesc cache.  This was fine, except for two problems.  Either the
C-style arrays would need to be placed in x86-linux-tdesc-features.c,
which would allow us to use the x86_linux_*_tdesc_count_1() functions
to size the arrays for us, or we'd need to hard code the array sizes
using separate #defines, which we'd then have to keep in sync with the
rest of the code in x86-linux-tdesc-features.c.

Given both of these problems I decided a better solution would be to
just switch to using a std::unordered_map to act as the cache.  This
will resize automatically, and we can use the xcr0 value as the key.

At first inspection, using xcr0 might seem to be a problem; after all
the {i386,amd64}_create_target_description functions take more than
just the xcr0 value.  However, this patch is only for x86/Linux
targets, and for x86/Linux all of the other flags passed to the tdesc
creation functions have constant values and so are irrelevant when we
consider tdesc caching.

For testing I've done the following:

  - Built on x86-64 GNU/Linux for all targets, and just for the native
    target,

  - Build on i386 GNU/Linux for all targets, and just for the native
    target,

  - Build on a 64-bit, non-x86 GNU/Linux for all targets, just for the
    native target, and for targets x86_64-*-linux and i386-*-linux.

Approved-By: Felix Willgerodt <felix.willgerodt@intel.com>
 2024-06-14 09:08:45 +01:00
Andrew Burgess
bf616be991 gdb/gdbserver: share some code relating to target description creation 
This commit is part of a series to share more of the x86 target
description creation code between GDB and gdbserver.

Unlike previous commits which were mostly refactoring, this commit is
the first that makes a real change, though that change should mostly
be for gdbserver; I've largely adopted the "GDB" way of doing things
for gdbserver, and this fixes a real gdbserver bug.

On a x86-64 Linux target, running the test:

  gdb.server/connect-with-no-symbol-file.exp

results in two core files being created.  Both of these core files are
from the inferior process, created after gdbserver has detached.

In this test a gdbserver process is started and then, after gdbserver
has started, but before GDB attaches, we either delete the inferior
executable, or change its permissions so it can't be read.  Only after
doing this do we attempt to connect with GDB.

As GDB connects to gdbserver, gdbserver attempts to figure out the
target description so that it can send the description to GDB, this
involves a call to x86_linux_read_description.

In x86_linux_read_description one of the first things we do is try to
figure out if the process is 32-bit or 64-bit.  To do this we look up
the executable via the thread-id, and then attempt to read the
architecture size from the executable.  This isn't going to work if
the executable has been deleted, or is no longer readable.

And so, as we can't read the executable, we default to an i386 target
and use an i386 target description.

A consequence of using an i386 target description is that addresses
are assumed to be 32-bits.  Here's an example session that shows the
problems this causes.  This is run on an x86-64 machine, and the test
binary (xx.x) is a standard 64-bit x86-64 binary:

  shell_1$ gdbserver --once localhost :54321 /tmp/xx.x

  shell_2$ gdb -q
  (gdb) set sysroot
  (gdb) shell chmod 000 /tmp/xx.x
  (gdb) target remote :54321
  Remote debugging using :54321
  warning: /tmp/xx.x: Permission denied.
  0xf7fd3110 in ?? ()
  (gdb) show architecture
  The target architecture is set to "auto" (currently "i386").
  (gdb) p/x $pc
  $1 = 0xf7fd3110
  (gdb) info proc mappings
  process 2412639
  Mapped address spaces:

  	Start Addr   End Addr       Size     Offset  Perms   objfile
  	  0x400000   0x401000     0x1000        0x0  r--p   /tmp/xx.x
  	  0x401000   0x402000     0x1000     0x1000  r-xp   /tmp/xx.x
  	  0x402000   0x403000     0x1000     0x2000  r--p   /tmp/xx.x
  	  0x403000   0x405000     0x2000     0x2000  rw-p   /tmp/xx.x
  	0xf7fcb000 0xf7fcf000     0x4000        0x0  r--p   [vvar]
  	0xf7fcf000 0xf7fd1000     0x2000        0x0  r-xp   [vdso]
  	0xf7fd1000 0xf7fd3000     0x2000        0x0  r--p   /usr/lib64/ld-2.30.so
  	0xf7fd3000 0xf7ff3000    0x20000     0x2000  r-xp   /usr/lib64/ld-2.30.so
  	0xf7ff3000 0xf7ffb000     0x8000    0x22000  r--p   /usr/lib64/ld-2.30.so
  	0xf7ffc000 0xf7ffe000     0x2000    0x2a000  rw-p   /usr/lib64/ld-2.30.so
  	0xf7ffe000 0xf7fff000     0x1000        0x0  rw-p
  	0xfffda000 0xfffff000    0x25000        0x0  rw-p   [stack]
  	0xff600000 0xff601000     0x1000        0x0  r-xp   [vsyscall]
  (gdb) info inferiors
    Num  Description       Connection           Executable
  * 1    process 2412639   1 (remote :54321)
  (gdb) shell cat /proc/2412639/maps
  00400000-00401000 r--p 00000000 fd:03 45907133           /tmp/xx.x
  00401000-00402000 r-xp 00001000 fd:03 45907133           /tmp/xx.x
  00402000-00403000 r--p 00002000 fd:03 45907133           /tmp/xx.x
  00403000-00405000 rw-p 00002000 fd:03 45907133           /tmp/xx.x
  7ffff7fcb000-7ffff7fcf000 r--p 00000000 00:00 0          [vvar]
  7ffff7fcf000-7ffff7fd1000 r-xp 00000000 00:00 0          [vdso]
  7ffff7fd1000-7ffff7fd3000 r--p 00000000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7fd3000-7ffff7ff3000 r-xp 00002000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7ff3000-7ffff7ffb000 r--p 00022000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7ffc000-7ffff7ffe000 rw-p 0002a000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7ffe000-7ffff7fff000 rw-p 00000000 00:00 0
  7ffffffda000-7ffffffff000 rw-p 00000000 00:00 0          [stack]
  ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0  [vsyscall]
  (gdb)

Notice the difference between the mappings reported via GDB and those
reported directly from the kernel via /proc/PID/maps, the addresses of
every mapping is clamped to 32-bits for GDB, while the kernel reports
real 64-bit addresses.

Notice also that the $pc value is a 32-bit value.  It appears to be
within one of the mappings reported by GDB, but is outside any of the
mappings reported from the kernel.

And this is where the problem arises.  When gdbserver detaches from
the inferior we pass the inferior the address from which it should
resume.  Due to the 32/64 bit confusion we tell the inferior to resume
from the 32-bit $pc value, which is not within any valid mapping, and
so, as soon as the inferior resumes, it segfaults.

If we look at how GDB (not gdbserver) figures out its target
description then we see an interesting difference.  GDB doesn't try to
read the executable.  Instead GDB uses ptrace to query the thread's
state, and uses this to figure out the if the thread is 32 or 64 bit.

If we update gdbserver to do it the "GDB" way then the above problem
is resolved, gdbserver now sees the process as 64-bit, and when we
detach from the inferior we give it the correct 64-bit address, and
the inferior no longer segfaults.

Now, I could just update the gdbserver code, but better, I think, to
share one copy of the code between GDB and gdbserver in gdb/nat/.
That is what this commit does.

The cores of x86_linux_read_description from gdbserver and
x86_linux_nat_target::read_description from GDB are moved into a new
file gdb/nat/x86-linux-tdesc.c and combined into a single function
x86_linux_tdesc_for_tid which is called from each location.

This new function does things mostly the GDB way, some changes are
needed to allow for the sharing; we now take some pointers for where
the shared code can cache the xcr0 and xsave layout values.

Another thing to note about this commit is how the functions
i386_linux_read_description and amd64_linux_read_description are
handled.  For now I've left these function as implemented separately
in GDB and gdbserver.  I've moved the declarations of these functions
into gdb/arch/{i386,amd64}-linux-tdesc.h, but the implementations are
left where they are.

A later commit in this series will make these functions shared too,
but doing this is not trivial, so I've left that for a separate
commit.  Merging the declarations as I've done here ensures that
everyone implements the function to the same API, and once these
functions are shared (in a later commit) we'll want a shared
declaration anyway.

Reviewed-By: Felix Willgerodt <felix.willgerodt@intel.com>
Acked-By: John Baldwin <jhb@FreeBSD.org>
 2024-06-14 09:08:45 +01:00
Simon Marchi
ec45252592 gdb: move store/extract integer functions to extract-store-integer.{c,h} 
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>
 2024-04-22 21:34:19 -04:00
Simon Marchi
18d2988e5d gdb, gdbserver, gdbsupport: remove includes of early headers 
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>
 2024-03-26 21:13:22 -04:00
Andrew Burgess
f06daade43 Revert "gdb/gdbserver: share I386_LINUX_XSAVE_XCR0_OFFSET definition" 
This reverts commit 7816b81e9b.
 2024-03-26 18:52:51 +00:00
Andrew Burgess
49a7660fb5 Revert "gdb/gdbserver: share some code relating to target description creation" 
This reverts commit cd9b374ffe.
 2024-03-26 18:52:44 +00:00
Andrew Burgess
69324a74e3 Revert "gdb/gdbserver: share x86/linux tdesc caching" 
This reverts commit 198ff6ff81.
 2024-03-26 18:52:17 +00:00
Andrew Burgess
198ff6ff81 gdb/gdbserver: share x86/linux tdesc caching 
This commit builds on the previous series of commits to share the
target description caching code between GDB and gdbserver for
x86/Linux targets.

The objective of this commit is to move the four functions (2 each of)
i386_linux_read_description and amd64_linux_read_description into
gdb/nat/x86-linux-tdesc.c and combine them so we have just a single
copy of each.  Then both GDB and gdbserver will link against these
shared functions.

It is worth reading the description of the previous commit to see why
this merging is not as simple as it seems: on the gdbserver side we
actually have two users of these functions, gdbserver itself, and the
in process agent (IPA).

However, the previous commit streamlined the gdbserver code, and so
now it is simple to move the two functions along with all their
support functions from the gdbserver directory into the gdb/nat/
directory, and then GDB is fine to call these functions.

One small curiosity with this patch is the function
x86_linux_post_init_tdesc.  On the gdbserver side the two functions
amd64_linux_read_description and i386_linux_read_description have some
functionality that is not present on the GDB side, that is some
additional configuration that is performed as each target description
is created to setup the expedited registers.

To support this I've added the function x86_linux_post_init_tdesc.
This function is called from the two *_linux_read_description
functions, but is implemented separately for GDB and gdbserver.

This does mean adding back some non-shared code when this whole series
has been about sharing code, but now the only non-shared bit is the
single line that is actually different between GDB and gdbserver, all
the rest, which is identical, is now shared.

I did need to add a new rule to the gdbserver Makefile, this is to
allow the nat/x86-linux-tdesc.c file to be compiled for the IPA.

Approved-By: John Baldwin <jhb@FreeBSD.org>
 2024-03-25 17:14:19 +00:00
Andrew Burgess
cd9b374ffe gdb/gdbserver: share some code relating to target description creation 
This commit is part of a series to share more of the x86 target
description creation code between GDB and gdbserver.

Unlike previous commits which were mostly refactoring, this commit is
the first that makes a real change, though that change should mostly
be for gdbserver; I've largely adopted the "GDB" way of doing things
for gdbserver, and this fixes a real gdbserver bug.

On a x86-64 Linux target, running the test:

  gdb.server/connect-with-no-symbol-file.exp

results in two core files being created.  Both of these core files are
from the inferior process, created after gdbserver has detached.

In this test a gdbserver process is started and then, after gdbserver
has started, but before GDB attaches, we either delete the inferior
executable, or change its permissions so it can't be read.  Only after
doing this do we attempt to connect with GDB.

As GDB connects to gdbserver, gdbserver attempts to figure out the
target description so that it can send the description to GDB, this
involves a call to x86_linux_read_description.

In x86_linux_read_description one of the first things we do is try to
figure out if the process is 32-bit or 64-bit.  To do this we look up
the executable via the thread-id, and then attempt to read the
architecture size from the executable.  This isn't going to work if
the executable has been deleted, or is no longer readable.

And so, as we can't read the executable, we default to an i386 target
and use an i386 target description.

A consequence of using an i386 target description is that addresses
are assumed to be 32-bits.  Here's an example session that shows the
problems this causes.  This is run on an x86-64 machine, and the test
binary (xx.x) is a standard 64-bit x86-64 binary:

  shell_1$ gdbserver --once localhost :54321 /tmp/xx.x

  shell_2$ gdb -q
  (gdb) set sysroot
  (gdb) shell chmod 000 /tmp/xx.x
  (gdb) target remote :54321
  Remote debugging using :54321
  warning: /tmp/xx.x: Permission denied.
  0xf7fd3110 in ?? ()
  (gdb) show architecture
  The target architecture is set to "auto" (currently "i386").
  (gdb) p/x $pc
  $1 = 0xf7fd3110
  (gdb) info proc mappings
  process 2412639
  Mapped address spaces:

  	Start Addr   End Addr       Size     Offset  Perms   objfile
  	  0x400000   0x401000     0x1000        0x0  r--p   /tmp/xx.x
  	  0x401000   0x402000     0x1000     0x1000  r-xp   /tmp/xx.x
  	  0x402000   0x403000     0x1000     0x2000  r--p   /tmp/xx.x
  	  0x403000   0x405000     0x2000     0x2000  rw-p   /tmp/xx.x
  	0xf7fcb000 0xf7fcf000     0x4000        0x0  r--p   [vvar]
  	0xf7fcf000 0xf7fd1000     0x2000        0x0  r-xp   [vdso]
  	0xf7fd1000 0xf7fd3000     0x2000        0x0  r--p   /usr/lib64/ld-2.30.so
  	0xf7fd3000 0xf7ff3000    0x20000     0x2000  r-xp   /usr/lib64/ld-2.30.so
  	0xf7ff3000 0xf7ffb000     0x8000    0x22000  r--p   /usr/lib64/ld-2.30.so
  	0xf7ffc000 0xf7ffe000     0x2000    0x2a000  rw-p   /usr/lib64/ld-2.30.so
  	0xf7ffe000 0xf7fff000     0x1000        0x0  rw-p
  	0xfffda000 0xfffff000    0x25000        0x0  rw-p   [stack]
  	0xff600000 0xff601000     0x1000        0x0  r-xp   [vsyscall]
  (gdb) info inferiors
    Num  Description       Connection           Executable
  * 1    process 2412639   1 (remote :54321)
  (gdb) shell cat /proc/2412639/maps
  00400000-00401000 r--p 00000000 fd:03 45907133           /tmp/xx.x
  00401000-00402000 r-xp 00001000 fd:03 45907133           /tmp/xx.x
  00402000-00403000 r--p 00002000 fd:03 45907133           /tmp/xx.x
  00403000-00405000 rw-p 00002000 fd:03 45907133           /tmp/xx.x
  7ffff7fcb000-7ffff7fcf000 r--p 00000000 00:00 0          [vvar]
  7ffff7fcf000-7ffff7fd1000 r-xp 00000000 00:00 0          [vdso]
  7ffff7fd1000-7ffff7fd3000 r--p 00000000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7fd3000-7ffff7ff3000 r-xp 00002000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7ff3000-7ffff7ffb000 r--p 00022000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7ffc000-7ffff7ffe000 rw-p 0002a000 fd:00 143904     /usr/lib64/ld-2.30.so
  7ffff7ffe000-7ffff7fff000 rw-p 00000000 00:00 0
  7ffffffda000-7ffffffff000 rw-p 00000000 00:00 0          [stack]
  ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0  [vsyscall]
  (gdb)

Notice the difference between the mappings reported via GDB and those
reported directly from the kernel via /proc/PID/maps, the addresses of
every mapping is clamped to 32-bits for GDB, while the kernel reports
real 64-bit addresses.

Notice also that the $pc value is a 32-bit value.  It appears to be
within one of the mappings reported by GDB, but is outside any of the
mappings reported from the kernel.

And this is where the problem arises.  When gdbserver detaches from
the inferior we pass the inferior the address from which it should
resume.  Due to the 32/64 bit confusion we tell the inferior to resume
from the 32-bit $pc value, which is not within any valid mapping, and
so, as soon as the inferior resumes, it segfaults.

If we look at how GDB (not gdbserver) figures out its target
description then we see an interesting difference.  GDB doesn't try to
read the executable.  Instead GDB uses ptrace to query the thread's
state, and uses this to figure out the if the thread is 32 or 64 bit.

If we update gdbserver to do it the "GDB" way then the above problem
is resolved, gdbserver now sees the process as 64-bit, and when we
detach from the inferior we give it the correct 64-bit address, and
the inferior no longer segfaults.

Now, I could just update the gdbserver code, but better, I think, to
share one copy of the code between GDB and gdbserver in gdb/nat/.
That is what this commit does.

The cores of x86_linux_read_description from gdbserver and
x86_linux_nat_target::read_description from GDB are moved into a new
file gdb/nat/x86-linux-tdesc.c and combined into a single function
x86_linux_tdesc_for_tid which is called from each location.

This new function does things the GDB way, the only changes are to
allow for the sharing; we now have a callback function to call the
first time that the xcr0 state is read, this allows for GDB and
gdbserver to perform their own initialisation as needed, and
additionally, the new function takes a pointer for where to cache the
xcr0 value, this isn't needed for this commit, but will be useful in a
later commit where gdbserver will want to read this cached xcr0
value.

Another thing to note about this commit is how the functions
i386_linux_read_description and amd64_linux_read_description are
handled.  For now I've left these function as implemented separately
in GDB and gdbserver.  I've moved the declarations of these functions
into gdb/nat/x86-linux-tdesc.h, but the implementations are left as
separate.

A later commit in this series will make these functions shared too,
but doing this is not trivial, so I've left that for a separate
commit.  Merging the declarations as I've done here ensures that
everyone implements the function to the same API, and once these
functions are shared (in a later commit) we'll want a shared
declaration anyway.

Approved-By: John Baldwin <jhb@FreeBSD.org>
 2024-03-25 17:14:19 +00:00
Andrew Burgess
7816b81e9b gdb/gdbserver: share I386_LINUX_XSAVE_XCR0_OFFSET definition 
Share the definition of I386_LINUX_XSAVE_XCR0_OFFSET between GDB and
gdbserver.

This commit is part of a series that aims to share more of the x86
target description creation code between GDB and gdbserver.  The
I386_LINUX_XSAVE_XCR0_OFFSET #define is used as part of the target
description creation, and I noticed that this constant is defined
separately for GDB and gdbserver.

This commit moves the definition into gdb/nat/x86-linux.h, which
allows the #define to be shared.

There should be no user visible changes after this commit.

Approved-By: John Baldwin <jhb@FreeBSD.org>
 2024-03-25 17:14:19 +00:00
Simon Marchi
8480a37e14 gdb: pass frames as const frame_info_ptr & 
We currently pass frames to function by value, as `frame_info_ptr`.
This is somewhat expensive:

 - the size of `frame_info_ptr` is 64 bytes, which is a bit big to pass
   by value
 - the constructors and destructor link/unlink the object in the global
   `frame_info_ptr::frame_list` list.  This is an `intrusive_list`, so
   it's not so bad: it's just assigning a few points, there's no memory
   allocation as if it was `std::list`, but still it's useless to do
   that over and over.

As suggested by Tom Tromey, change many function signatures to accept
`const frame_info_ptr &` instead of `frame_info_ptr`.

Some functions reassign their `frame_info_ptr` parameter, like:

  void
  the_func (frame_info_ptr frame)
  {
    for (; frame != nullptr; frame = get_prev_frame (frame))
      {
        ...
      }
  }

I wondered what to do about them, do I leave them as-is or change them
(and need to introduce a separate local variable that can be
re-assigned).  I opted for the later for consistency.  It might not be
clear why some functions take `const frame_info_ptr &` while others take
`frame_info_ptr`.  Also, if a function took a `frame_info_ptr` because
it did re-assign its parameter, I doubt that we would think to change it
to `const frame_info_ptr &` should the implementation change such that
it doesn't need to take `frame_info_ptr` anymore.  It seems better to
have a simple rule and apply it everywhere.

Change-Id: I59d10addef687d157f82ccf4d54f5dde9a963fd0
Approved-By: Andrew Burgess <aburgess@redhat.com>
 2024-02-20 10:42:25 -05:00
Andrew Burgess
1d506c26d9 Update copyright year range in header of all files managed by GDB 
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.
 2024-01-12 15:49:57 +00:00
John Baldwin
b42405a159 gdb: Update x86 Linux architectures to support XSAVE layouts. 
Refactor i386_linux_core_read_xcr0 to fetch and return a corresponding
x86_xsave_layout as well as xcr0 using the size of an existing
NT_X86_XSTATE core dump to determine the offsets via
i387_guess_xsave_layout.  Use this to add an implementation of
gdbarch_core_xfer_x86_xsave_layout.

Use tdep->xsave_layout.sizeof_xsave as the size of the XSTATE register
set.

Approved-By: Simon Marchi <simon.marchi@efficios.com>
 2023-08-28 14:18:19 -07:00
John Baldwin
3625712636 amd64-linux-tdep: Don't treat fs_base and gs_base as system registers. 
These registers can be changed directly in userspace, and similar
registers to support TLS on other architectures (tpidr* on ARM and
AArch64, tp on RISC-V) are treated as general purpose registers.

Reviewed-By: Tom Tromey <tom@tromey.com>
 2023-03-06 16:47:03 -08:00
Joel Brobecker
213516ef31 Update copyright year range in header of all files managed by GDB 
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.
 2023-01-01 17:01:16 +04:00
Tom Tromey
bd2b40ac12 Change GDB to use frame_info_ptr 
This changes GDB to use frame_info_ptr instead of frame_info *
The substitution was done with multiple sequential `sed` commands:

sed 's/^struct frame_info;/class frame_info_ptr;/'
sed 's/struct frame_info \*/frame_info_ptr /g' - which left some
    issues in a few files, that were manually fixed.
sed 's/\<frame_info \*/frame_info_ptr /g'
sed 's/frame_info_ptr $/frame_info_ptr/g' - used to remove whitespace
    problems.

The changed files were then manually checked and some 'sed' changes
undone, some constructors and some gets were added, according to what
made sense, and what Tromey originally did

Co-Authored-By: Bruno Larsen <blarsen@redhat.com>
Approved-by: Tom Tomey <tom@tromey.com>
 2022-10-10 11:57:10 +02:00
Andrew Burgess
08106042d9 gdb: move the type cast into gdbarch_tdep 
I built GDB for all targets on a x86-64/GNU-Linux system, and
then (accidentally) passed GDB a RISC-V binary, and asked GDB to "run"
the binary on the native target.  I got this error:

  (gdb) show architecture
  The target architecture is set to "auto" (currently "i386").
  (gdb) file /tmp/hello.rv32.exe
  Reading symbols from /tmp/hello.rv32.exe...
  (gdb) show architecture
  The target architecture is set to "auto" (currently "riscv:rv32").
  (gdb) run
  Starting program: /tmp/hello.rv32.exe
  ../../src/gdb/i387-tdep.c:596: internal-error: i387_supply_fxsave: Assertion `tdep->st0_regnum >= I386_ST0_REGNUM' failed.

What's going on here is this; initially the architecture is i386, this
is based on the default architecture, which is set based on the native
target.  After loading the RISC-V executable the architecture of the
current inferior is updated based on the architecture of the
executable.

When we "run", GDB does a fork & exec, with the inferior being
controlled through ptrace.  GDB sees an initial stop from the inferior
as soon as the inferior comes to life.  In response to this stop GDB
ends up calling save_stop_reason (linux-nat.c), which ends up trying
to read register from the inferior, to do this we end up calling
target_ops::fetch_registers, which, for the x86-64 native target,
calls amd64_linux_nat_target::fetch_registers.

After this I eventually end up in i387_supply_fxsave, different x86
based targets will end in different functions to fetch registers, but
it doesn't really matter which function we end up in, the problem is
this line, which is repeated in many places:

  i386_gdbarch_tdep *tdep = (i386_gdbarch_tdep *) gdbarch_tdep (arch);

The problem here is that the ARCH in this line comes from the current
inferior, which, as we discussed above, will be a RISC-V gdbarch, the
tdep field will actually be of type riscv_gdbarch_tdep, not
i386_gdbarch_tdep.  After this cast we are relying on undefined
behaviour, in my case I happen to trigger an assert, but this might
not always be the case.

The thing I tried that exposed this problem was of course, trying to
start an executable of the wrong architecture on a native target.  I
don't think that the correct solution for this problem is to detect,
at the point of cast, that the gdbarch_tdep object is of the wrong
type, but, I did wonder, is there a way that we could protect
ourselves from incorrectly casting the gdbarch_tdep object?

I think that there is something we can do here, and this commit is the
first step in that direction, though no actual check is added by this
commit.

This commit can be split into two parts:

 (1) In gdbarch.h and arch-utils.c.  In these files I have modified
 gdbarch_tdep (the function) so that it now takes a template argument,
 like this:

    template<typename TDepType>
    static inline TDepType *
    gdbarch_tdep (struct gdbarch *gdbarch)
    {
      struct gdbarch_tdep *tdep = gdbarch_tdep_1 (gdbarch);
      return static_cast<TDepType *> (tdep);
    }

  After this change we are no better protected, but the cast is now
  done within the gdbarch_tdep function rather than at the call sites,
  this leads to the second, much larger change in this commit,

  (2) Everywhere gdbarch_tdep is called, we make changes like this:

    -  i386_gdbarch_tdep *tdep = (i386_gdbarch_tdep *) gdbarch_tdep (arch);
    +  i386_gdbarch_tdep *tdep = gdbarch_tdep<i386_gdbarch_tdep> (arch);

There should be no functional change after this commit.

In the next commit I will build on this change to add an assertion in
gdbarch_tdep that checks we are casting to the correct type.
 2022-07-21 15:19:42 +01:00
Tom de Vries
43f074cde4 [gdb/record] Support recording of getrandom 
Add missing support for recording of linux syscall getrandom.

Tested on x86_64-linux with native and target board unix/-m32.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22081
 2022-07-12 15:15:19 +02:00
Tom de Vries
cd02db09d2 [gdb/tdep] Handle pipe2 syscall for amd64 
When running test-case gdb.reverse/pipe-reverse.exp on openSUSE Tumbleweed,
I run into:
...
(gdb) continue^M
Continuing.^M
Process record and replay target doesn't support syscall number 293^M
Process record: failed to record execution log.^M
^M
Program stopped.^M
0x00007ffff7daabdb in pipe () from /lib64/libc.so.6^M
(gdb) FAIL: gdb.reverse/pipe-reverse.exp: continue to breakpoint: marker2
...

The current glibc on Tumbleweed is 2.35, which contains commit
"linux: Implement pipe in terms of __NR_pipe2", and consequently syscall pipe2
is used in stead of syscall pipe.

There is already support added for syscall pipe2 for aarch64 (which only has
syscall pipe2, not syscall pipe), so enable the same for amd64, by:
- adding amd64_sys_pipe2 in enum amd64_syscall
- translating amd64_sys_pipe2 to gdb_sys_pipe2 in amd64_canonicalize_syscall

Tested on x86_64-linux, specifically on:
- openSUSE Tumbleweed (with glibc 2.35), and
- openSUSE Leap 15.3 (with glibc 2.31).

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29056
 2022-05-09 10:42:16 +02:00
Andrew Burgess
dbf5d61bda gdb: make gdbarch_register_reggroup_p take a const reggroup * 
Change gdbarch_register_reggroup_p to take a 'const struct reggroup *'
argument.  This requires a change to the gdb/gdbarch-components.py
script, regeneration of gdbarch.{c,h}, and then updates to all the
architectures that implement this method.

There should be no user visible changes after this commit.
 2022-04-07 16:01:17 +01:00
H.J. Lu
0653f01479 gdb: Consolidate 32bit-pkeys.xml and 64bit-pkeys.xml 
1. Since 32bit-pkeys.xml and 64bit-pkeys.xml are identical, consolidate
them into a single keys.xml.
2. Enable PKU for x32 to fix:

$ gdbserver :123456 x32-program
...
.../gdbserver/regcache.cc:255: A problem internal to GDBserver has been detected
.
Unknown register pkru requested

on Tiger Lake.
 2022-03-31 10:25:26 -07:00
Tom Tromey
6cb06a8cda Unify gdb printf functions 
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.
 2022-03-29 12:46:24 -06:00
Joel Brobecker
4a94e36819 Automatic Copyright Year update after running gdb/copyright.py 
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.
 2022-01-01 19:13:23 +04:00
Tom Tromey
d68510ac19 Use correct stream for process record output 
The process record code often emits unfiltered output.  In some cases,
this output ought to go to gdb_stderr (but see below).  In other
cases, the output is guarded by a logging variable and so ought to go
to gdb_stdlog.  This patch makes these changes.

Note that in many cases, the output to stderr is followed by a
"return -1", which is how process record indicates an error.  It seems
to me that calling error here would be preferable, because, in many
cases, that's all the caller does when it sees a -1.  However, I
haven't made this change.

This is part of PR gdb/7233.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=7233
 2021-12-29 10:40:10 -07:00
Simon Marchi
2a50938ab7 gdb: make extract_integer take an array_view 
I think it would make sense for extract_integer, extract_signed_integer
and extract_unsigned_integer to take an array_view.  This way, when we
extract an integer, we can validate that we don't overflow the buffer
passed by the caller (e.g. ask to extract a 4-byte integer but pass a
2-byte buffer).

 - Change extract_integer to take an array_view
 - Add overloads of extract_signed_integer and extract_unsigned_integer
   that take array_views.  Keep the existing versions so we don't
   need to change all callers, but make them call the array_view
   versions.

This shortens some places like:

  result = extract_unsigned_integer (value_contents (result_val).data (),
				     TYPE_LENGTH (value_type (result_val)),
				     byte_order);

into

  result = extract_unsigned_integer (value_contents (result_val), byte_order);

value_contents returns an array view that is of length
`TYPE_LENGTH (value_type (result_val))` already, so the length is
implicitly communicated through the array view.

Change-Id: Ic1c1f98c88d5c17a8486393af316f982604d6c95
 2021-12-03 16:41:38 -05:00
Simon Marchi
345bd07cce gdb: fix gdbarch_tdep ODR violation 
I would like to be able to use non-trivial types in gdbarch_tdep types.
This is not possible at the moment (in theory), because of the one
definition rule.

To allow it, rename all gdbarch_tdep types to <arch>_gdbarch_tdep, and
make them inherit from a gdbarch_tdep base class.  The inheritance is
necessary to be able to pass pointers to all these <arch>_gdbarch_tdep
objects to gdbarch_alloc, which takes a pointer to gdbarch_tdep.

These objects are never deleted through a base class pointer, so I
didn't include a virtual destructor.  In the future, if gdbarch objects
deletable, I could imagine that the gdbarch_tdep objects could become
owned by the gdbarch objects, and then it would become useful to have a
virtual destructor (so that the gdbarch object can delete the owned
gdbarch_tdep object).  But that's not necessary right now.

It turns out that RISC-V already has a gdbarch_tdep that is
non-default-constructible, so that provides a good motivation for this
change.

Most changes are fairly straightforward, mostly needing to add some
casts all over the place.  There is however the xtensa architecture,
doing its own little weird thing to define its gdbarch_tdep.  I did my
best to adapt it, but I can't test those changes.

Change-Id: Ic001903f91ddd106bd6ca09a79dabe8df2d69f3b
 2021-11-15 11:29:39 -05:00
H.J. Lu
c0154a4a21 gdb: Don't assume r_ldsomap when r_version > 1 on Linux 
The r_ldsomap field is specific to Solaris (part of librtld_db), and
should never be accessed for Linux.  glibc is planning to add a field
to support multiple namespaces.  But there will be no r_ldsomap when
r_version is bumped to 2.  Add linux_[ilp32|lp64]_fetch_link_map_offsets
to set r_ldsomap_offset to -1 and use them for Linux targets.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28236
 2021-08-17 07:05:57 -07:00
Tom Tromey
482ddd69c5 Convert dtrace probes to use operations 
This changes dtrace to use the new operation type.

gdb/ChangeLog
2021-03-08  Tom Tromey  <tom@tromey.com>

	* gdbarch.sh (dtrace_parse_probe_argument): Change return type.
	* gdbarch.h: Rebuild.
	* gdbarch.c: Rebuild.
	* dtrace-probe.c (dtrace_probe::build_arg_exprs): Update.
	* amd64-linux-tdep.c (amd64_dtrace_parse_probe_argument): Change
	return type.
	(amd64_dtrace_parse_probe_argument): Update.
 2021-03-08 07:28:37 -07:00
Luis Machado
bdec2917b1 Convert some frame functions to use gdb::array_view. 
This patch converts the most obvious functions from gdb/frame.h to use
the gdb::array_view abstraction.  I've converted the ones that used buffer +
length.

There are others using only the buffer, with an implicit size. I did not
touch those for now. But it would be nice to pass the size for safety.

Tested with --enable-targets=all on Ubuntu 18.04/20.04 aarch64-linux.

gdb/ChangeLog

2021-01-19  Luis Machado  <luis.machado@linaro.org>

	* frame.h (get_frame_register_bytes): Pass a gdb::array_view instead
	of buffer + length.
	(put_frame_register_bytes): Likewise.
	Adjust documentation.
	(get_frame_memory): Pass a gdb::array_view instead of buffer + length.
	(safe_frame_unwind_memory): Likewise.
	* frame.c (get_frame_register_bytes, put_frame_register_bytes)
	(get_frame_memory, safe_frame_unwind_memory): Adjust to use
	gdb::array_view.
	* amd64-fbsd-tdep.c (amd64fbsd_sigtramp_p): Likewise.
	* amd64-linux-tdep.c (amd64_linux_sigtramp_start): Likewise.
	* amd64-obsd-tdep.c (amd64obsd_sigtramp_p): Likewise.
	* arc-linux-tdep.c (arc_linux_is_sigtramp): Likewise.
	* cris-tdep.c (cris_sigtramp_start, cris_rt_sigtramp_start): Likewise.
	* dwarf2/loc.c (rw_pieced_value): Likewise.
	* hppa-tdep.c (hppa_frame_cache): Likewise.
	* i386-fbsd-tdep.c (i386fbsd_sigtramp_p): Likewise.
	* i386-gnu-tdep.c (i386_gnu_sigtramp_start): Likewise.
	* i386-linux-tdep.c (i386_linux_sigtramp_start)
	(i386_linux_rt_sigtramp_start): Likewise.
	* i386-obsd-tdep.c (i386obsd_sigtramp_p): Likewise.
	* i386-tdep.c (i386_register_to_value): Likewise.
	* i387-tdep.c (i387_register_to_value): Likewise.
	* ia64-tdep.c (ia64_register_to_value): Likewise.
	* m32r-linux-tdep.c (m32r_linux_sigtramp_start)
	(m32r_linux_rt_sigtramp_start): Likewise.
	* m68k-linux-tdep.c (m68k_linux_pc_in_sigtramp): Likewise.
	* m68k-tdep.c (m68k_register_to_value): Likewise.
	* mips-tdep.c (mips_register_to_value)
	(mips_value_to_register): Likewise.
	* ppc-fbsd-tdep.c (ppcfbsd_sigtramp_frame_sniffer)
	(ppcfbsd_sigtramp_frame_cache): Likewise.
	* ppc-obsd-tdep.c (ppcobsd_sigtramp_frame_sniffer)
	(ppcobsd_sigtramp_frame_cache): Likewise.
	* rs6000-tdep.c (rs6000_in_function_epilogue_frame_p)
	(rs6000_register_to_value): Likewise.
	* tilegx-tdep.c (tilegx_analyze_prologue): Likewise.
	* tramp-frame.c (tramp_frame_start): Likewise.
	* valops.c (value_assign): Likewise.
 2021-01-19 14:42:23 -03:00
Joel Brobecker
3666a04883 Update copyright year range in all GDB files 
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.
 2021-01-01 12:12:21 +04:00
Simon Marchi
372ff58fda gdb: use two displaced step buffers on amd64/Linux 
As observed on a binary compiled on AMD64 Ubuntu 20.04, against glibc
2.31 (I think it's the libc that provides this startup code, right?),
there are enough bytes at the executable's entry point to hold more than
one displaced step buffer.  gdbarch_max_insn_length is 16, and the
code at _start looks like:

0000000000001040 <_start>:
    1040:       f3 0f 1e fa             endbr64
    1044:       31 ed                   xor    %ebp,%ebp
    1046:       49 89 d1                mov    %rdx,%r9
    1049:       5e                      pop    %rsi
    104a:       48 89 e2                mov    %rsp,%rdx
    104d:       48 83 e4 f0             and    $0xfffffffffffffff0,%rsp
    1051:       50                      push   %rax
    1052:       54                      push   %rsp
    1053:       4c 8d 05 56 01 00 00    lea    0x156(%rip),%r8        # 11b0 <__libc_csu_fini>
    105a:       48 8d 0d df 00 00 00    lea    0xdf(%rip),%rcx        # 1140 <__libc_csu_init>
    1061:       48 8d 3d c1 00 00 00    lea    0xc1(%rip),%rdi        # 1129 <main>
    1068:       ff 15 72 2f 00 00       callq  *0x2f72(%rip)        # 3fe0 <__libc_start_main@GLIBC_2.2.5>
    106e:       f4                      hlt
    106f:       90                      nop

The two buffers would occupy [0x1040, 0x1060).

I checked on Alpine, which uses the musl C library, the startup code
looks like:

0000000000001048 <_start>:
    1048:       48 31 ed                xor    %rbp,%rbp
    104b:       48 89 e7                mov    %rsp,%rdi
    104e:       48 8d 35 e3 2d 00 00    lea    0x2de3(%rip),%rsi        # 3e38 <_DYNAMIC>
    1055:       48 83 e4 f0             and    $0xfffffffffffffff0,%rsp
    1059:       e8 00 00 00 00          callq  105e <_start_c>

000000000000105e <_start_c>:
    105e:       48 8b 37                mov    (%rdi),%rsi
    1061:       48 8d 57 08             lea    0x8(%rdi),%rdx
    1065:       45 31 c9                xor    %r9d,%r9d
    1068:       4c 8d 05 47 01 00 00    lea    0x147(%rip),%r8        # 11b6 <_fini>
    106f:       48 8d 0d 8a ff ff ff    lea    -0x76(%rip),%rcx        # 1000 <_init>
    1076:       48 8d 3d 0c 01 00 00    lea    0x10c(%rip),%rdi        # 1189 <main>
    107d:       e9 9e ff ff ff          jmpq   1020 <__libc_start_main@plt>

Even though there's a _start_c symbol, it all appears to be code that
runs once at the very beginning of the program, so it looks fine if the
two buffers occupy [0x1048, 0x1068).

One important thing I discovered while doing this is that when debugging
a dynamically-linked executable, breakpoints in the shared library
loader are hit before executing the _start code, and these breakpoints
may be displaced-stepped.  So it's very important that the buffer bytes
are restored properly after doing the displaced steps, otherwise the
_start code will be corrupted once we try to execute it.

Another thing that made me think about is that library constructors (as
in `__attribute__((constructor))`) run before _start.  And they are free
to spawn threads.  What if one of these threads executes a displaced
step, therefore changing the bytes at _start, while the main thread
executes _start?  That doesn't sound good and I don't know how we could
prevent it.  But this is a problem that predates the current patch.

Even when stress-testing the implementation, by making many threads do
displaced steps over and over, I didn't see a significant performance (I
confirmed that the two buffers were used by checking the "set debug
displaced" logs though).  However, this patch mostly helps make the
feature testable by anybody with an AMD64/Linux machine, so I think it's
useful.

gdb/ChangeLog:

	* amd64-linux-tdep.c (amd64_linux_init_abi): Pass 2 as the
	number of displaced step buffers.

Change-Id: Ia0c96ea0fcda893f4726df6fdac7be5214620112
 2020-12-04 16:45:05 -05:00
Simon Marchi
480af54cf6 gdb: make displaced stepping implementation capable of managing multiple buffers 
The displaced_step_buffer class, introduced in the previous patch,
manages access to a single displaced step buffer.  Change it into
displaced_step_buffers (note the plural), which manages access to
multiple displaced step buffers.

When preparing a displaced step for a thread, it looks for an unused
buffer.

For now, all users still pass a single displaced step buffer, so no real
behavior change is expected here.  The following patch makes a user pass
more than one buffer, so the functionality introduced by this patch is
going to be useful in the next one.

gdb/ChangeLog:

	* displaced-stepping.h (struct displaced_step_buffer): Rename
	to...
	(struct displaced_step_buffers): ... this.
	<m_addr, m_current_thread, m_copy_insn_closure>: Remove.
	<struct displaced_step_buffer>: New inner class.
	<m_buffers>: New.
	* displaced-stepping.c (displaced_step_buffer::prepare): Rename
	to...
	(displaced_step_buffers::prepare): ... this, adjust for multiple
	buffers.
	(displaced_step_buffer::finish):  Rename to...
	(displaced_step_buffers::finish): ... this, adjust for multiple
	buffers.
	(displaced_step_buffer::copy_insn_closure_by_addr): Rename to...
	(displaced_step_buffers::copy_insn_closure_by_addr): ... this,
	adjust for multiple buffers.
	(displaced_step_buffer::restore_in_ptid): Rename to...
	(displaced_step_buffers::restore_in_ptid): ... this, adjust for
	multiple buffers.
	* linux-tdep.h (linux_init_abi): Change supports_displaced_step
	for num_disp_step_buffers.
	* linux-tdep.c (struct linux_gdbarch_data)
	<num_disp_step_buffers>: New field.
	(struct linux_info) <disp_step_buf>: Rename to...
	<disp_step_bufs>: ... this, change type to
	displaced_step_buffers.
	(linux_displaced_step_prepare): Use
	linux_gdbarch_data::num_disp_step_buffers to create that number
	of buffers.
	(linux_displaced_step_finish): Adjust.
	(linux_displaced_step_copy_insn_closure_by_addr): Adjust.
	(linux_displaced_step_restore_all_in_ptid): Adjust.
	(linux_init_abi): Change supports_displaced_step parameter for
	num_disp_step_buffers, save it in linux_gdbarch_data.
	* aarch64-linux-tdep.c (aarch64_linux_init_abi): Adjust.
	* alpha-linux-tdep.c (alpha_linux_init_abi): Adjust.
	* amd64-linux-tdep.c (amd64_linux_init_abi_common): Change
	supports_displaced_step parameter for num_disp_step_buffers.
	(amd64_linux_init_abi): Adjust.
	(amd64_x32_linux_init_abi): Adjust.
	* arc-linux-tdep.c (arc_linux_init_osabi): Adjust.
	* arm-linux-tdep.c (arm_linux_init_abi): Adjust.
	* bfin-linux-tdep.c (bfin_linux_init_abi): Adjust.
	* cris-linux-tdep.c (cris_linux_init_abi): Adjust.
	* csky-linux-tdep.c (csky_linux_init_abi): Adjust.
	* frv-linux-tdep.c (frv_linux_init_abi): Adjust.
	* hppa-linux-tdep.c (hppa_linux_init_abi): Adjust.
	* i386-linux-tdep.c (i386_linux_init_abi): Adjust.
	* ia64-linux-tdep.c (ia64_linux_init_abi): Adjust.
	* m32r-linux-tdep.c (m32r_linux_init_abi): Adjust.
	* m68k-linux-tdep.c (m68k_linux_init_abi):
	* microblaze-linux-tdep.c (microblaze_linux_init_abi):
	* mips-linux-tdep.c (mips_linux_init_abi): Adjust.
	* mn10300-linux-tdep.c (am33_linux_init_osabi): Adjust.
	* nios2-linux-tdep.c (nios2_linux_init_abi): Adjust.
	* or1k-linux-tdep.c (or1k_linux_init_abi): Adjust.
	* ppc-linux-tdep.c (ppc_linux_init_abi): Adjust.
	* riscv-linux-tdep.c (riscv_linux_init_abi): Adjust.
	* rs6000-tdep.c (struct ppc_inferior_data) <disp_step_buf>:
	Change type to displaced_step_buffers.
	* s390-linux-tdep.c (s390_linux_init_abi_any): Adjust.
	* sh-linux-tdep.c (sh_linux_init_abi): Adjust.
	* sparc-linux-tdep.c (sparc32_linux_init_abi): Adjust.
	* sparc64-linux-tdep.c (sparc64_linux_init_abi): Adjust.
	* tic6x-linux-tdep.c (tic6x_uclinux_init_abi): Adjust.
	* tilegx-linux-tdep.c (tilegx_linux_init_abi): Adjust.
	* xtensa-linux-tdep.c (xtensa_linux_init_abi): Adjust.

Change-Id: Ia9c02f207da2c9e1d9188020139619122392bb70
 2020-12-04 16:43:56 -05:00
Simon Marchi
187b041e25 gdb: move displaced stepping logic to gdbarch, allow starting concurrent displaced steps 
Today, GDB only allows a single displaced stepping operation to happen
per inferior at a time.  There is a single displaced stepping buffer per
inferior, whose address is fixed (obtained with
gdbarch_displaced_step_location), managed by infrun.c.

In the case of the AMD ROCm target [1] (in the context of which this
work has been done), it is typical to have thousands of threads (or
waves, in SMT terminology) executing the same code, hitting the same
breakpoint (possibly conditional) and needing to to displaced step it at
the same time.  The limitation of only one displaced step executing at a
any given time becomes a real bottleneck.

To fix this bottleneck, we want to make it possible for threads of a
same inferior to execute multiple displaced steps in parallel.  This
patch builds the foundation for that.

In essence, this patch moves the task of preparing a displaced step and
cleaning up after to gdbarch functions.  This allows using different
schemes for allocating and managing displaced stepping buffers for
different platforms.  The gdbarch decides how to assign a buffer to a
thread that needs to execute a displaced step.

On the ROCm target, we are able to allocate one displaced stepping
buffer per thread, so a thread will never have to wait to execute a
displaced step.

On Linux, the entry point of the executable if used as the displaced
stepping buffer, since we assume that this code won't get used after
startup.  From what I saw (I checked with a binary generated against
glibc and musl), on AMD64 we have enough space there to fit two
displaced stepping buffers.  A subsequent patch makes AMD64/Linux use
two buffers.

In addition to having multiple displaced stepping buffers, there is also
the idea of sharing displaced stepping buffers between threads.  Two
threads doing displaced steps for the same PC could use the same buffer
at the same time.  Two threads stepping over the same instruction (same
opcode) at two different PCs may also be able to share a displaced
stepping buffer.  This is an idea for future patches, but the
architecture built by this patch is made to allow this.

Now, the implementation details.  The main part of this patch is moving
the responsibility of preparing and finishing a displaced step to the
gdbarch.  Before this patch, preparing a displaced step is driven by the
displaced_step_prepare_throw function.  It does some calls to the
gdbarch to do some low-level operations, but the high-level logic is
there.  The steps are roughly:

- Ask the gdbarch for the displaced step buffer location
- Save the existing bytes in the displaced step buffer
- Ask the gdbarch to copy the instruction into the displaced step buffer
- Set the pc of the thread to the beginning of the displaced step buffer

Similarly, the "fixup" phase, executed after the instruction was
successfully single-stepped, is driven by the infrun code (function
displaced_step_finish).  The steps are roughly:

- Restore the original bytes in the displaced stepping buffer
- Ask the gdbarch to fixup the instruction result (adjust the target's
  registers or memory to do as if the instruction had been executed in
  its original location)

The displaced_step_inferior_state::step_thread field indicates which
thread (if any) is currently using the displaced stepping buffer, so it
is used by displaced_step_prepare_throw to check if the displaced
stepping buffer is free to use or not.

This patch defers the whole task of preparing and cleaning up after a
displaced step to the gdbarch.  Two new main gdbarch methods are added,
with the following semantics:

  - gdbarch_displaced_step_prepare: Prepare for the given thread to
    execute a displaced step of the instruction located at its current PC.
    Upon return, everything should be ready for GDB to resume the thread
    (with either a single step or continue, as indicated by
    gdbarch_displaced_step_hw_singlestep) to make it displaced step the
    instruction.

  - gdbarch_displaced_step_finish: Called when the thread stopped after
    having started a displaced step.  Verify if the instruction was
    executed, if so apply any fixup required to compensate for the fact
    that the instruction was executed at a different place than its
    original pc.  Release any resources that were allocated for this
    displaced step.  Upon return, everything should be ready for GDB to
    resume the thread in its "normal" code path.

The displaced_step_prepare_throw function now pretty much just offloads
to gdbarch_displaced_step_prepare and the displaced_step_finish function
offloads to gdbarch_displaced_step_finish.

The gdbarch_displaced_step_location method is now unnecessary, so is
removed.  Indeed, the core of GDB doesn't know how many displaced step
buffers there are nor where they are.

To keep the existing behavior for existing architectures, the logic that
was previously implemented in infrun.c for preparing and finishing a
displaced step is moved to displaced-stepping.c, to the
displaced_step_buffer class.  Architectures are modified to implement
the new gdbarch methods using this class.  The behavior is not expected
to change.

The other important change (which arises from the above) is that the
core of GDB no longer prevents concurrent displaced steps.  Before this
patch, start_step_over walks the global step over chain and tries to
initiate a step over (whether it is in-line or displaced).  It follows
these rules:

  - if an in-line step is in progress (in any inferior), don't start any
    other step over
  - if a displaced step is in progress for an inferior, don't start
    another displaced step for that inferior

After starting a displaced step for a given inferior, it won't start
another displaced step for that inferior.

In the new code, start_step_over simply tries to initiate step overs for
all the threads in the list.  But because threads may be added back to
the global list as it iterates the global list, trying to initiate step
overs, start_step_over now starts by stealing the global queue into a
local queue and iterates on the local queue.  In the typical case, each
thread will either:

  - have initiated a displaced step and be resumed
  - have been added back by the global step over queue by
    displaced_step_prepare_throw, because the gdbarch will have returned
    that there aren't enough resources (i.e. buffers) to initiate a
    displaced step for that thread

Lastly, if start_step_over initiates an in-line step, it stops
iterating, and moves back whatever remaining threads it had in its local
step over queue to the global step over queue.

Two other gdbarch methods are added, to handle some slightly annoying
corner cases.  They feel awkwardly specific to these cases, but I don't
see any way around them:

  - gdbarch_displaced_step_copy_insn_closure_by_addr: in
    arm_pc_is_thumb, arm-tdep.c wants to get the closure for a given
    buffer address.

  - gdbarch_displaced_step_restore_all_in_ptid: when a process forks
    (at least on Linux), the address space is copied.  If some displaced
    step buffers were in use at the time of the fork, we need to restore
    the original bytes in the child's address space.

These two adjustments are also made in infrun.c:

  - prepare_for_detach: there may be multiple threads doing displaced
    steps when we detach, so wait until all of them are done

  - handle_inferior_event: when we handle a fork event for a given
    thread, it's possible that other threads are doing a displaced step at
    the same time.  Make sure to restore the displaced step buffer
    contents in the child for them.

[1] https://github.com/ROCm-Developer-Tools/ROCgdb

gdb/ChangeLog:

	* displaced-stepping.h (struct
	displaced_step_copy_insn_closure): Adjust comments.
	(struct displaced_step_inferior_state) <step_thread,
	step_gdbarch, step_closure, step_original, step_copy,
	step_saved_copy>: Remove fields.
	(struct displaced_step_thread_state): New.
	(struct displaced_step_buffer): New.
	* displaced-stepping.c (displaced_step_buffer::prepare): New.
	(write_memory_ptid): Move from infrun.c.
	(displaced_step_instruction_executed_successfully): New,
	factored out of displaced_step_finish.
	(displaced_step_buffer::finish): New.
	(displaced_step_buffer::copy_insn_closure_by_addr): New.
	(displaced_step_buffer::restore_in_ptid): New.
	* gdbarch.sh (displaced_step_location): Remove.
	(displaced_step_prepare, displaced_step_finish,
	displaced_step_copy_insn_closure_by_addr,
	displaced_step_restore_all_in_ptid): New.
	* gdbarch.c: Re-generate.
	* gdbarch.h: Re-generate.
	* gdbthread.h (class thread_info) <displaced_step_state>: New
	field.
	(thread_step_over_chain_remove): New declaration.
	(thread_step_over_chain_next): New declaration.
	(thread_step_over_chain_length): New declaration.
	* thread.c (thread_step_over_chain_remove): Make non-static.
	(thread_step_over_chain_next): New.
	(global_thread_step_over_chain_next): Use
	thread_step_over_chain_next.
	(thread_step_over_chain_length): New.
	(global_thread_step_over_chain_enqueue): Add debug print.
	(global_thread_step_over_chain_remove): Add debug print.
	* infrun.h (get_displaced_step_copy_insn_closure_by_addr):
	Remove.
	* infrun.c (get_displaced_stepping_state): New.
	(displaced_step_in_progress_any_inferior): Remove.
	(displaced_step_in_progress_thread): Adjust.
	(displaced_step_in_progress): Adjust.
	(displaced_step_in_progress_any_thread): New.
	(get_displaced_step_copy_insn_closure_by_addr): Remove.
	(gdbarch_supports_displaced_stepping): Use
	gdbarch_displaced_step_prepare_p.
	(displaced_step_reset): Change parameter from inferior to
	thread.
	(displaced_step_prepare_throw): Implement using
	gdbarch_displaced_step_prepare.
	(write_memory_ptid): Move to displaced-step.c.
	(displaced_step_restore): Remove.
	(displaced_step_finish): Implement using
	gdbarch_displaced_step_finish.
	(start_step_over): Allow starting more than one displaced step.
	(prepare_for_detach): Handle possibly multiple threads doing
	displaced steps.
	(handle_inferior_event): Handle possibility that fork event
	happens while another thread displaced steps.
	* linux-tdep.h (linux_displaced_step_prepare): New.
	(linux_displaced_step_finish): New.
	(linux_displaced_step_copy_insn_closure_by_addr): New.
	(linux_displaced_step_restore_all_in_ptid): New.
	(linux_init_abi): Add supports_displaced_step parameter.
	* linux-tdep.c (struct linux_info) <disp_step_buf>: New field.
	(linux_displaced_step_prepare): New.
	(linux_displaced_step_finish): New.
	(linux_displaced_step_copy_insn_closure_by_addr): New.
	(linux_displaced_step_restore_all_in_ptid): New.
	(linux_init_abi): Add supports_displaced_step parameter,
	register displaced step methods if true.
	(_initialize_linux_tdep): Register inferior_execd observer.
	* amd64-linux-tdep.c (amd64_linux_init_abi_common): Add
	supports_displaced_step parameter, adjust call to
	linux_init_abi.  Remove call to
	set_gdbarch_displaced_step_location.
	(amd64_linux_init_abi): Adjust call to
	amd64_linux_init_abi_common.
	(amd64_x32_linux_init_abi): Likewise.
	* aarch64-linux-tdep.c (aarch64_linux_init_abi): Adjust call to
	linux_init_abi.  Remove call to
	set_gdbarch_displaced_step_location.
	* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
	* i386-linux-tdep.c (i386_linux_init_abi): Likewise.
	* alpha-linux-tdep.c (alpha_linux_init_abi): Adjust call to
	linux_init_abi.
	* arc-linux-tdep.c (arc_linux_init_osabi): Likewise.
	* bfin-linux-tdep.c (bfin_linux_init_abi): Likewise.
	* cris-linux-tdep.c (cris_linux_init_abi): Likewise.
	* csky-linux-tdep.c (csky_linux_init_abi): Likewise.
	* frv-linux-tdep.c (frv_linux_init_abi): Likewise.
	* hppa-linux-tdep.c (hppa_linux_init_abi): Likewise.
	* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
	* m32r-linux-tdep.c (m32r_linux_init_abi): Likewise.
	* m68k-linux-tdep.c (m68k_linux_init_abi): Likewise.
	* microblaze-linux-tdep.c (microblaze_linux_init_abi): Likewise.
	* mips-linux-tdep.c (mips_linux_init_abi): Likewise.
	* mn10300-linux-tdep.c (am33_linux_init_osabi): Likewise.
	* nios2-linux-tdep.c (nios2_linux_init_abi): Likewise.
	* or1k-linux-tdep.c (or1k_linux_init_abi): Likewise.
	* riscv-linux-tdep.c (riscv_linux_init_abi): Likewise.
	* s390-linux-tdep.c (s390_linux_init_abi_any): Likewise.
	* sh-linux-tdep.c (sh_linux_init_abi): Likewise.
	* sparc-linux-tdep.c (sparc32_linux_init_abi): Likewise.
	* sparc64-linux-tdep.c (sparc64_linux_init_abi): Likewise.
	* tic6x-linux-tdep.c (tic6x_uclinux_init_abi): Likewise.
	* tilegx-linux-tdep.c (tilegx_linux_init_abi): Likewise.
	* xtensa-linux-tdep.c (xtensa_linux_init_abi): Likewise.
	* ppc-linux-tdep.c (ppc_linux_init_abi): Adjust call to
	linux_init_abi.  Remove call to
	set_gdbarch_displaced_step_location.
	* arm-tdep.c (arm_pc_is_thumb): Call
	gdbarch_displaced_step_copy_insn_closure_by_addr instead of
	get_displaced_step_copy_insn_closure_by_addr.
	* rs6000-aix-tdep.c (rs6000_aix_init_osabi): Adjust calls to
	clear gdbarch methods.
	* rs6000-tdep.c (struct ppc_inferior_data): New structure.
	(get_ppc_per_inferior): New function.
	(ppc_displaced_step_prepare): New function.
	(ppc_displaced_step_finish): New function.
	(ppc_displaced_step_restore_all_in_ptid): New function.
	(rs6000_gdbarch_init): Register new gdbarch methods.
	* s390-tdep.c (s390_gdbarch_init): Don't call
	set_gdbarch_displaced_step_location, set new gdbarch methods.

gdb/testsuite/ChangeLog:

	* gdb.arch/amd64-disp-step-avx.exp: Adjust pattern.
	* gdb.threads/forking-threads-plus-breakpoint.exp: Likewise.
	* gdb.threads/non-stop-fair-events.exp: Likewise.

Change-Id: I387cd235a442d0620ec43608fd3dc0097fcbf8c8
 2020-12-04 16:43:55 -05:00
Simon Marchi
dda83cd783 gdb, gdbserver, gdbsupport: fix leading space vs tabs issues 
Many spots incorrectly use only spaces for indentation (for example,
there are a lot of spots in ada-lang.c).  I've always found it awkward
when I needed to edit one of these spots: do I keep the original wrong
indentation, or do I fix it?  What if the lines around it are also
wrong, do I fix them too?  I probably don't want to fix them in the same
patch, to avoid adding noise to my patch.

So I propose to fix as much as possible once and for all (hopefully).

One typical counter argument for this is that it makes code archeology
more difficult, because git-blame will show this commit as the last
change for these lines.  My counter counter argument is: when
git-blaming, you often need to do "blame the file at the parent commit"
anyway, to go past some other refactor that touched the line you are
interested in, but is not the change you are looking for.  So you
already need a somewhat efficient way to do this.

Using some interactive tool, rather than plain git-blame, makes this
trivial.  For example, I use "tig blame <file>", where going back past
the commit that changed the currently selected line is one keystroke.
It looks like Magit in Emacs does it too (though I've never used it).
Web viewers of Github and Gitlab do it too.  My point is that it won't
really make archeology more difficult.

The other typical counter argument is that it will cause conflicts with
existing patches.  That's true... but it's a one time cost, and those
are not conflicts that are difficult to resolve.  I have also tried "git
rebase --ignore-whitespace", it seems to work well.  Although that will
re-introduce the faulty indentation, so one needs to take care of fixing
the indentation in the patch after that (which is easy).

gdb/ChangeLog:

	* aarch64-linux-tdep.c: Fix indentation.
	* aarch64-ravenscar-thread.c: Fix indentation.
	* aarch64-tdep.c: Fix indentation.
	* aarch64-tdep.h: Fix indentation.
	* ada-lang.c: Fix indentation.
	* ada-lang.h: Fix indentation.
	* ada-tasks.c: Fix indentation.
	* ada-typeprint.c: Fix indentation.
	* ada-valprint.c: Fix indentation.
	* ada-varobj.c: Fix indentation.
	* addrmap.c: Fix indentation.
	* addrmap.h: Fix indentation.
	* agent.c: Fix indentation.
	* aix-thread.c: Fix indentation.
	* alpha-bsd-nat.c: Fix indentation.
	* alpha-linux-tdep.c: Fix indentation.
	* alpha-mdebug-tdep.c: Fix indentation.
	* alpha-nbsd-tdep.c: Fix indentation.
	* alpha-obsd-tdep.c: Fix indentation.
	* alpha-tdep.c: Fix indentation.
	* amd64-bsd-nat.c: Fix indentation.
	* amd64-darwin-tdep.c: Fix indentation.
	* amd64-linux-nat.c: Fix indentation.
	* amd64-linux-tdep.c: Fix indentation.
	* amd64-nat.c: Fix indentation.
	* amd64-obsd-tdep.c: Fix indentation.
	* amd64-tdep.c: Fix indentation.
	* amd64-windows-tdep.c: Fix indentation.
	* annotate.c: Fix indentation.
	* arc-tdep.c: Fix indentation.
	* arch-utils.c: Fix indentation.
	* arch/arm-get-next-pcs.c: Fix indentation.
	* arch/arm.c: Fix indentation.
	* arm-linux-nat.c: Fix indentation.
	* arm-linux-tdep.c: Fix indentation.
	* arm-nbsd-tdep.c: Fix indentation.
	* arm-pikeos-tdep.c: Fix indentation.
	* arm-tdep.c: Fix indentation.
	* arm-tdep.h: Fix indentation.
	* arm-wince-tdep.c: Fix indentation.
	* auto-load.c: Fix indentation.
	* auxv.c: Fix indentation.
	* avr-tdep.c: Fix indentation.
	* ax-gdb.c: Fix indentation.
	* ax-general.c: Fix indentation.
	* bfin-linux-tdep.c: Fix indentation.
	* block.c: Fix indentation.
	* block.h: Fix indentation.
	* blockframe.c: Fix indentation.
	* bpf-tdep.c: Fix indentation.
	* break-catch-sig.c: Fix indentation.
	* break-catch-syscall.c: Fix indentation.
	* break-catch-throw.c: Fix indentation.
	* breakpoint.c: Fix indentation.
	* breakpoint.h: Fix indentation.
	* bsd-uthread.c: Fix indentation.
	* btrace.c: Fix indentation.
	* build-id.c: Fix indentation.
	* buildsym-legacy.h: Fix indentation.
	* buildsym.c: Fix indentation.
	* c-typeprint.c: Fix indentation.
	* c-valprint.c: Fix indentation.
	* c-varobj.c: Fix indentation.
	* charset.c: Fix indentation.
	* cli/cli-cmds.c: Fix indentation.
	* cli/cli-decode.c: Fix indentation.
	* cli/cli-decode.h: Fix indentation.
	* cli/cli-script.c: Fix indentation.
	* cli/cli-setshow.c: Fix indentation.
	* coff-pe-read.c: Fix indentation.
	* coffread.c: Fix indentation.
	* compile/compile-cplus-types.c: Fix indentation.
	* compile/compile-object-load.c: Fix indentation.
	* compile/compile-object-run.c: Fix indentation.
	* completer.c: Fix indentation.
	* corefile.c: Fix indentation.
	* corelow.c: Fix indentation.
	* cp-abi.h: Fix indentation.
	* cp-namespace.c: Fix indentation.
	* cp-support.c: Fix indentation.
	* cp-valprint.c: Fix indentation.
	* cris-linux-tdep.c: Fix indentation.
	* cris-tdep.c: Fix indentation.
	* darwin-nat-info.c: Fix indentation.
	* darwin-nat.c: Fix indentation.
	* darwin-nat.h: Fix indentation.
	* dbxread.c: Fix indentation.
	* dcache.c: Fix indentation.
	* disasm.c: Fix indentation.
	* dtrace-probe.c: Fix indentation.
	* dwarf2/abbrev.c: Fix indentation.
	* dwarf2/attribute.c: Fix indentation.
	* dwarf2/expr.c: Fix indentation.
	* dwarf2/frame.c: Fix indentation.
	* dwarf2/index-cache.c: Fix indentation.
	* dwarf2/index-write.c: Fix indentation.
	* dwarf2/line-header.c: Fix indentation.
	* dwarf2/loc.c: Fix indentation.
	* dwarf2/macro.c: Fix indentation.
	* dwarf2/read.c: Fix indentation.
	* dwarf2/read.h: Fix indentation.
	* elfread.c: Fix indentation.
	* eval.c: Fix indentation.
	* event-top.c: Fix indentation.
	* exec.c: Fix indentation.
	* exec.h: Fix indentation.
	* expprint.c: Fix indentation.
	* f-lang.c: Fix indentation.
	* f-typeprint.c: Fix indentation.
	* f-valprint.c: Fix indentation.
	* fbsd-nat.c: Fix indentation.
	* fbsd-tdep.c: Fix indentation.
	* findvar.c: Fix indentation.
	* fork-child.c: Fix indentation.
	* frame-unwind.c: Fix indentation.
	* frame-unwind.h: Fix indentation.
	* frame.c: Fix indentation.
	* frv-linux-tdep.c: Fix indentation.
	* frv-tdep.c: Fix indentation.
	* frv-tdep.h: Fix indentation.
	* ft32-tdep.c: Fix indentation.
	* gcore.c: Fix indentation.
	* gdb_bfd.c: Fix indentation.
	* gdbarch.sh: Fix indentation.
	* gdbarch.c: Re-generate
	* gdbarch.h: Re-generate.
	* gdbcore.h: Fix indentation.
	* gdbthread.h: Fix indentation.
	* gdbtypes.c: Fix indentation.
	* gdbtypes.h: Fix indentation.
	* glibc-tdep.c: Fix indentation.
	* gnu-nat.c: Fix indentation.
	* gnu-nat.h: Fix indentation.
	* gnu-v2-abi.c: Fix indentation.
	* gnu-v3-abi.c: Fix indentation.
	* go32-nat.c: Fix indentation.
	* guile/guile-internal.h: Fix indentation.
	* guile/scm-cmd.c: Fix indentation.
	* guile/scm-frame.c: Fix indentation.
	* guile/scm-iterator.c: Fix indentation.
	* guile/scm-math.c: Fix indentation.
	* guile/scm-ports.c: Fix indentation.
	* guile/scm-pretty-print.c: Fix indentation.
	* guile/scm-value.c: Fix indentation.
	* h8300-tdep.c: Fix indentation.
	* hppa-linux-nat.c: Fix indentation.
	* hppa-linux-tdep.c: Fix indentation.
	* hppa-nbsd-nat.c: Fix indentation.
	* hppa-nbsd-tdep.c: Fix indentation.
	* hppa-obsd-nat.c: Fix indentation.
	* hppa-tdep.c: Fix indentation.
	* hppa-tdep.h: Fix indentation.
	* i386-bsd-nat.c: Fix indentation.
	* i386-darwin-nat.c: Fix indentation.
	* i386-darwin-tdep.c: Fix indentation.
	* i386-dicos-tdep.c: Fix indentation.
	* i386-gnu-nat.c: Fix indentation.
	* i386-linux-nat.c: Fix indentation.
	* i386-linux-tdep.c: Fix indentation.
	* i386-nto-tdep.c: Fix indentation.
	* i386-obsd-tdep.c: Fix indentation.
	* i386-sol2-nat.c: Fix indentation.
	* i386-tdep.c: Fix indentation.
	* i386-tdep.h: Fix indentation.
	* i386-windows-tdep.c: Fix indentation.
	* i387-tdep.c: Fix indentation.
	* i387-tdep.h: Fix indentation.
	* ia64-libunwind-tdep.c: Fix indentation.
	* ia64-libunwind-tdep.h: Fix indentation.
	* ia64-linux-nat.c: Fix indentation.
	* ia64-linux-tdep.c: Fix indentation.
	* ia64-tdep.c: Fix indentation.
	* ia64-tdep.h: Fix indentation.
	* ia64-vms-tdep.c: Fix indentation.
	* infcall.c: Fix indentation.
	* infcmd.c: Fix indentation.
	* inferior.c: Fix indentation.
	* infrun.c: Fix indentation.
	* iq2000-tdep.c: Fix indentation.
	* language.c: Fix indentation.
	* linespec.c: Fix indentation.
	* linux-fork.c: Fix indentation.
	* linux-nat.c: Fix indentation.
	* linux-tdep.c: Fix indentation.
	* linux-thread-db.c: Fix indentation.
	* lm32-tdep.c: Fix indentation.
	* m2-lang.c: Fix indentation.
	* m2-typeprint.c: Fix indentation.
	* m2-valprint.c: Fix indentation.
	* m32c-tdep.c: Fix indentation.
	* m32r-linux-tdep.c: Fix indentation.
	* m32r-tdep.c: Fix indentation.
	* m68hc11-tdep.c: Fix indentation.
	* m68k-bsd-nat.c: Fix indentation.
	* m68k-linux-nat.c: Fix indentation.
	* m68k-linux-tdep.c: Fix indentation.
	* m68k-tdep.c: Fix indentation.
	* machoread.c: Fix indentation.
	* macrocmd.c: Fix indentation.
	* macroexp.c: Fix indentation.
	* macroscope.c: Fix indentation.
	* macrotab.c: Fix indentation.
	* macrotab.h: Fix indentation.
	* main.c: Fix indentation.
	* mdebugread.c: Fix indentation.
	* mep-tdep.c: Fix indentation.
	* mi/mi-cmd-catch.c: Fix indentation.
	* mi/mi-cmd-disas.c: Fix indentation.
	* mi/mi-cmd-env.c: Fix indentation.
	* mi/mi-cmd-stack.c: Fix indentation.
	* mi/mi-cmd-var.c: Fix indentation.
	* mi/mi-cmds.c: Fix indentation.
	* mi/mi-main.c: Fix indentation.
	* mi/mi-parse.c: Fix indentation.
	* microblaze-tdep.c: Fix indentation.
	* minidebug.c: Fix indentation.
	* minsyms.c: Fix indentation.
	* mips-linux-nat.c: Fix indentation.
	* mips-linux-tdep.c: Fix indentation.
	* mips-nbsd-tdep.c: Fix indentation.
	* mips-tdep.c: Fix indentation.
	* mn10300-linux-tdep.c: Fix indentation.
	* mn10300-tdep.c: Fix indentation.
	* moxie-tdep.c: Fix indentation.
	* msp430-tdep.c: Fix indentation.
	* namespace.h: Fix indentation.
	* nat/fork-inferior.c: Fix indentation.
	* nat/gdb_ptrace.h: Fix indentation.
	* nat/linux-namespaces.c: Fix indentation.
	* nat/linux-osdata.c: Fix indentation.
	* nat/netbsd-nat.c: Fix indentation.
	* nat/x86-dregs.c: Fix indentation.
	* nbsd-nat.c: Fix indentation.
	* nbsd-tdep.c: Fix indentation.
	* nios2-linux-tdep.c: Fix indentation.
	* nios2-tdep.c: Fix indentation.
	* nto-procfs.c: Fix indentation.
	* nto-tdep.c: Fix indentation.
	* objfiles.c: Fix indentation.
	* objfiles.h: Fix indentation.
	* opencl-lang.c: Fix indentation.
	* or1k-tdep.c: Fix indentation.
	* osabi.c: Fix indentation.
	* osabi.h: Fix indentation.
	* osdata.c: Fix indentation.
	* p-lang.c: Fix indentation.
	* p-typeprint.c: Fix indentation.
	* p-valprint.c: Fix indentation.
	* parse.c: Fix indentation.
	* ppc-linux-nat.c: Fix indentation.
	* ppc-linux-tdep.c: Fix indentation.
	* ppc-nbsd-nat.c: Fix indentation.
	* ppc-nbsd-tdep.c: Fix indentation.
	* ppc-obsd-nat.c: Fix indentation.
	* ppc-ravenscar-thread.c: Fix indentation.
	* ppc-sysv-tdep.c: Fix indentation.
	* ppc64-tdep.c: Fix indentation.
	* printcmd.c: Fix indentation.
	* proc-api.c: Fix indentation.
	* producer.c: Fix indentation.
	* producer.h: Fix indentation.
	* prologue-value.c: Fix indentation.
	* prologue-value.h: Fix indentation.
	* psymtab.c: Fix indentation.
	* python/py-arch.c: Fix indentation.
	* python/py-bpevent.c: Fix indentation.
	* python/py-event.c: Fix indentation.
	* python/py-event.h: Fix indentation.
	* python/py-finishbreakpoint.c: Fix indentation.
	* python/py-frame.c: Fix indentation.
	* python/py-framefilter.c: Fix indentation.
	* python/py-inferior.c: Fix indentation.
	* python/py-infthread.c: Fix indentation.
	* python/py-objfile.c: Fix indentation.
	* python/py-prettyprint.c: Fix indentation.
	* python/py-registers.c: Fix indentation.
	* python/py-signalevent.c: Fix indentation.
	* python/py-stopevent.c: Fix indentation.
	* python/py-stopevent.h: Fix indentation.
	* python/py-threadevent.c: Fix indentation.
	* python/py-tui.c: Fix indentation.
	* python/py-unwind.c: Fix indentation.
	* python/py-value.c: Fix indentation.
	* python/py-xmethods.c: Fix indentation.
	* python/python-internal.h: Fix indentation.
	* python/python.c: Fix indentation.
	* ravenscar-thread.c: Fix indentation.
	* record-btrace.c: Fix indentation.
	* record-full.c: Fix indentation.
	* record.c: Fix indentation.
	* reggroups.c: Fix indentation.
	* regset.h: Fix indentation.
	* remote-fileio.c: Fix indentation.
	* remote.c: Fix indentation.
	* reverse.c: Fix indentation.
	* riscv-linux-tdep.c: Fix indentation.
	* riscv-ravenscar-thread.c: Fix indentation.
	* riscv-tdep.c: Fix indentation.
	* rl78-tdep.c: Fix indentation.
	* rs6000-aix-tdep.c: Fix indentation.
	* rs6000-lynx178-tdep.c: Fix indentation.
	* rs6000-nat.c: Fix indentation.
	* rs6000-tdep.c: Fix indentation.
	* rust-lang.c: Fix indentation.
	* rx-tdep.c: Fix indentation.
	* s12z-tdep.c: Fix indentation.
	* s390-linux-tdep.c: Fix indentation.
	* score-tdep.c: Fix indentation.
	* ser-base.c: Fix indentation.
	* ser-mingw.c: Fix indentation.
	* ser-uds.c: Fix indentation.
	* ser-unix.c: Fix indentation.
	* serial.c: Fix indentation.
	* sh-linux-tdep.c: Fix indentation.
	* sh-nbsd-tdep.c: Fix indentation.
	* sh-tdep.c: Fix indentation.
	* skip.c: Fix indentation.
	* sol-thread.c: Fix indentation.
	* solib-aix.c: Fix indentation.
	* solib-darwin.c: Fix indentation.
	* solib-frv.c: Fix indentation.
	* solib-svr4.c: Fix indentation.
	* solib.c: Fix indentation.
	* source.c: Fix indentation.
	* sparc-linux-tdep.c: Fix indentation.
	* sparc-nbsd-tdep.c: Fix indentation.
	* sparc-obsd-tdep.c: Fix indentation.
	* sparc-ravenscar-thread.c: Fix indentation.
	* sparc-tdep.c: Fix indentation.
	* sparc64-linux-tdep.c: Fix indentation.
	* sparc64-nbsd-tdep.c: Fix indentation.
	* sparc64-obsd-tdep.c: Fix indentation.
	* sparc64-tdep.c: Fix indentation.
	* stabsread.c: Fix indentation.
	* stack.c: Fix indentation.
	* stap-probe.c: Fix indentation.
	* stubs/ia64vms-stub.c: Fix indentation.
	* stubs/m32r-stub.c: Fix indentation.
	* stubs/m68k-stub.c: Fix indentation.
	* stubs/sh-stub.c: Fix indentation.
	* stubs/sparc-stub.c: Fix indentation.
	* symfile-mem.c: Fix indentation.
	* symfile.c: Fix indentation.
	* symfile.h: Fix indentation.
	* symmisc.c: Fix indentation.
	* symtab.c: Fix indentation.
	* symtab.h: Fix indentation.
	* target-float.c: Fix indentation.
	* target.c: Fix indentation.
	* target.h: Fix indentation.
	* tic6x-tdep.c: Fix indentation.
	* tilegx-linux-tdep.c: Fix indentation.
	* tilegx-tdep.c: Fix indentation.
	* top.c: Fix indentation.
	* tracefile-tfile.c: Fix indentation.
	* tracepoint.c: Fix indentation.
	* tui/tui-disasm.c: Fix indentation.
	* tui/tui-io.c: Fix indentation.
	* tui/tui-regs.c: Fix indentation.
	* tui/tui-stack.c: Fix indentation.
	* tui/tui-win.c: Fix indentation.
	* tui/tui-winsource.c: Fix indentation.
	* tui/tui.c: Fix indentation.
	* typeprint.c: Fix indentation.
	* ui-out.h: Fix indentation.
	* unittests/copy_bitwise-selftests.c: Fix indentation.
	* unittests/memory-map-selftests.c: Fix indentation.
	* utils.c: Fix indentation.
	* v850-tdep.c: Fix indentation.
	* valarith.c: Fix indentation.
	* valops.c: Fix indentation.
	* valprint.c: Fix indentation.
	* valprint.h: Fix indentation.
	* value.c: Fix indentation.
	* value.h: Fix indentation.
	* varobj.c: Fix indentation.
	* vax-tdep.c: Fix indentation.
	* windows-nat.c: Fix indentation.
	* windows-tdep.c: Fix indentation.
	* xcoffread.c: Fix indentation.
	* xml-syscall.c: Fix indentation.
	* xml-tdesc.c: Fix indentation.
	* xstormy16-tdep.c: Fix indentation.
	* xtensa-config.c: Fix indentation.
	* xtensa-linux-nat.c: Fix indentation.
	* xtensa-linux-tdep.c: Fix indentation.
	* xtensa-tdep.c: Fix indentation.

gdbserver/ChangeLog:

	* ax.cc: Fix indentation.
	* dll.cc: Fix indentation.
	* inferiors.h: Fix indentation.
	* linux-low.cc: Fix indentation.
	* linux-nios2-low.cc: Fix indentation.
	* linux-ppc-ipa.cc: Fix indentation.
	* linux-ppc-low.cc: Fix indentation.
	* linux-x86-low.cc: Fix indentation.
	* linux-xtensa-low.cc: Fix indentation.
	* regcache.cc: Fix indentation.
	* server.cc: Fix indentation.
	* tracepoint.cc: Fix indentation.

gdbsupport/ChangeLog:

	* common-exceptions.h: Fix indentation.
	* event-loop.cc: Fix indentation.
	* fileio.cc: Fix indentation.
	* filestuff.cc: Fix indentation.
	* gdb-dlfcn.cc: Fix indentation.
	* gdb_string_view.h: Fix indentation.
	* job-control.cc: Fix indentation.
	* signals.cc: Fix indentation.

Change-Id: I4bad7ae6be0fbe14168b8ebafb98ffe14964a695
 2020-11-02 10:28:45 -05:00
John Baldwin
77bdfeb2e6 Migrate the x86 MPX handle_segmentation_fault hook to report_signal_info. 
gdb/ChangeLog:

	* amd64-linux-tdep.c (amd64_linux_init_abi_common): Use
	i386_linux_report_signal_info instead of
	i386_linux_handle_segmentation_fault.
	* i386-linux-tdep.c (i386_linux_handle_segmentation_fault): Rename
	to i386_linux_report_signal_info and add siggnal argument.
	(i386_linux_init_abi): Use i386_linux_report_signal_info instead
	of i386_linux_handle_segmentation_fault.
	* i386-linux-tdep.h (i386_linux_handle_segmentation_fault): Rename
	to i386_linux_report_signal_info and add siggnal argument.
 2020-07-21 17:28:16 -07:00
Simon Marchi
6c2659886f gdb: add back declarations for _initialize functions 
I'd like to enable the -Wmissing-declarations warning.  However, it
warns for every _initialize function, for example:

      CXX    dcache.o
    /home/smarchi/src/binutils-gdb/gdb/dcache.c: In function ‘void _initialize_dcache()’:
    /home/smarchi/src/binutils-gdb/gdb/dcache.c:688:1: error: no previous declaration for ‘void _initialize_dcache()’ [-Werror=missing-declarations]
     _initialize_dcache (void)
     ^~~~~~~~~~~~~~~~~~

The only practical way forward I found is to add back the declarations,
which were removed by this commit:

    commit 481695ed5f
    Author: John Baldwin <jhb@FreeBSD.org>
    Date:   Sat Sep 9 11:02:37 2017 -0700

        Remove unnecessary function prototypes.

I don't think it's a big problem to have the declarations for these
functions, but if anybody has a better solution for this, I'll be happy
to use it.

gdb/ChangeLog:

	* aarch64-fbsd-nat.c (_initialize_aarch64_fbsd_nat): Add declaration.
	* aarch64-fbsd-tdep.c (_initialize_aarch64_fbsd_tdep): Add declaration.
	* aarch64-linux-nat.c (_initialize_aarch64_linux_nat): Add declaration.
	* aarch64-linux-tdep.c (_initialize_aarch64_linux_tdep): Add declaration.
	* aarch64-newlib-tdep.c (_initialize_aarch64_newlib_tdep): Add declaration.
	* aarch64-tdep.c (_initialize_aarch64_tdep): Add declaration.
	* ada-exp.y (_initialize_ada_exp): Add declaration.
	* ada-lang.c (_initialize_ada_language): Add declaration.
	* ada-tasks.c (_initialize_tasks): Add declaration.
	* agent.c (_initialize_agent): Add declaration.
	* aix-thread.c (_initialize_aix_thread): Add declaration.
	* alpha-bsd-nat.c (_initialize_alphabsd_nat): Add declaration.
	* alpha-linux-nat.c (_initialize_alpha_linux_nat): Add declaration.
	* alpha-linux-tdep.c (_initialize_alpha_linux_tdep): Add declaration.
	* alpha-nbsd-tdep.c (_initialize_alphanbsd_tdep): Add declaration.
	* alpha-obsd-tdep.c (_initialize_alphaobsd_tdep): Add declaration.
	* alpha-tdep.c (_initialize_alpha_tdep): Add declaration.
	* amd64-darwin-tdep.c (_initialize_amd64_darwin_tdep): Add declaration.
	* amd64-dicos-tdep.c (_initialize_amd64_dicos_tdep): Add declaration.
	* amd64-fbsd-nat.c (_initialize_amd64fbsd_nat): Add declaration.
	* amd64-fbsd-tdep.c (_initialize_amd64fbsd_tdep): Add declaration.
	* amd64-linux-nat.c (_initialize_amd64_linux_nat): Add declaration.
	* amd64-linux-tdep.c (_initialize_amd64_linux_tdep): Add declaration.
	* amd64-nbsd-nat.c (_initialize_amd64nbsd_nat): Add declaration.
	* amd64-nbsd-tdep.c (_initialize_amd64nbsd_tdep): Add declaration.
	* amd64-obsd-nat.c (_initialize_amd64obsd_nat): Add declaration.
	* amd64-obsd-tdep.c (_initialize_amd64obsd_tdep): Add declaration.
	* amd64-sol2-tdep.c (_initialize_amd64_sol2_tdep): Add declaration.
	* amd64-tdep.c (_initialize_amd64_tdep): Add declaration.
	* amd64-windows-nat.c (_initialize_amd64_windows_nat): Add declaration.
	* amd64-windows-tdep.c (_initialize_amd64_windows_tdep): Add declaration.
	* annotate.c (_initialize_annotate): Add declaration.
	* arc-newlib-tdep.c (_initialize_arc_newlib_tdep): Add declaration.
	* arc-tdep.c (_initialize_arc_tdep): Add declaration.
	* arch-utils.c (_initialize_gdbarch_utils): Add declaration.
	* arm-fbsd-nat.c (_initialize_arm_fbsd_nat): Add declaration.
	* arm-fbsd-tdep.c (_initialize_arm_fbsd_tdep): Add declaration.
	* arm-linux-nat.c (_initialize_arm_linux_nat): Add declaration.
	* arm-linux-tdep.c (_initialize_arm_linux_tdep): Add declaration.
	* arm-nbsd-nat.c (_initialize_arm_netbsd_nat): Add declaration.
	* arm-nbsd-tdep.c (_initialize_arm_netbsd_tdep): Add declaration.
	* arm-obsd-tdep.c (_initialize_armobsd_tdep): Add declaration.
	* arm-pikeos-tdep.c (_initialize_arm_pikeos_tdep): Add declaration.
	* arm-symbian-tdep.c (_initialize_arm_symbian_tdep): Add declaration.
	* arm-tdep.c (_initialize_arm_tdep): Add declaration.
	* arm-wince-tdep.c (_initialize_arm_wince_tdep): Add declaration.
	* auto-load.c (_initialize_auto_load): Add declaration.
	* auxv.c (_initialize_auxv): Add declaration.
	* avr-tdep.c (_initialize_avr_tdep): Add declaration.
	* ax-gdb.c (_initialize_ax_gdb): Add declaration.
	* bfin-linux-tdep.c (_initialize_bfin_linux_tdep): Add declaration.
	* bfin-tdep.c (_initialize_bfin_tdep): Add declaration.
	* break-catch-sig.c (_initialize_break_catch_sig): Add declaration.
	* break-catch-syscall.c (_initialize_break_catch_syscall): Add declaration.
	* break-catch-throw.c (_initialize_break_catch_throw): Add declaration.
	* breakpoint.c (_initialize_breakpoint): Add declaration.
	* bsd-uthread.c (_initialize_bsd_uthread): Add declaration.
	* btrace.c (_initialize_btrace): Add declaration.
	* charset.c (_initialize_charset): Add declaration.
	* cli/cli-cmds.c (_initialize_cli_cmds): Add declaration.
	* cli/cli-dump.c (_initialize_cli_dump): Add declaration.
	* cli/cli-interp.c (_initialize_cli_interp): Add declaration.
	* cli/cli-logging.c (_initialize_cli_logging): Add declaration.
	* cli/cli-script.c (_initialize_cli_script): Add declaration.
	* cli/cli-style.c (_initialize_cli_style): Add declaration.
	* coff-pe-read.c (_initialize_coff_pe_read): Add declaration.
	* coffread.c (_initialize_coffread): Add declaration.
	* compile/compile-cplus-types.c (_initialize_compile_cplus_types): Add declaration.
	* compile/compile.c (_initialize_compile): Add declaration.
	* complaints.c (_initialize_complaints): Add declaration.
	* completer.c (_initialize_completer): Add declaration.
	* copying.c (_initialize_copying): Add declaration.
	* corefile.c (_initialize_core): Add declaration.
	* corelow.c (_initialize_corelow): Add declaration.
	* cp-abi.c (_initialize_cp_abi): Add declaration.
	* cp-namespace.c (_initialize_cp_namespace): Add declaration.
	* cp-support.c (_initialize_cp_support): Add declaration.
	* cp-valprint.c (_initialize_cp_valprint): Add declaration.
	* cris-linux-tdep.c (_initialize_cris_linux_tdep): Add declaration.
	* cris-tdep.c (_initialize_cris_tdep): Add declaration.
	* csky-linux-tdep.c (_initialize_csky_linux_tdep): Add declaration.
	* csky-tdep.c (_initialize_csky_tdep): Add declaration.
	* ctfread.c (_initialize_ctfread): Add declaration.
	* d-lang.c (_initialize_d_language): Add declaration.
	* darwin-nat-info.c (_initialize_darwin_info_commands): Add declaration.
	* darwin-nat.c (_initialize_darwin_nat): Add declaration.
	* dbxread.c (_initialize_dbxread): Add declaration.
	* dcache.c (_initialize_dcache): Add declaration.
	* disasm-selftests.c (_initialize_disasm_selftests): Add declaration.
	* disasm.c (_initialize_disasm): Add declaration.
	* dtrace-probe.c (_initialize_dtrace_probe): Add declaration.
	* dummy-frame.c (_initialize_dummy_frame): Add declaration.
	* dwarf-index-cache.c (_initialize_index_cache): Add declaration.
	* dwarf-index-write.c (_initialize_dwarf_index_write): Add declaration.
	* dwarf2-frame-tailcall.c (_initialize_tailcall_frame): Add declaration.
	* dwarf2-frame.c (_initialize_dwarf2_frame): Add declaration.
	* dwarf2expr.c (_initialize_dwarf2expr): Add declaration.
	* dwarf2loc.c (_initialize_dwarf2loc): Add declaration.
	* dwarf2read.c (_initialize_dwarf2_read): Add declaration.
	* elfread.c (_initialize_elfread): Add declaration.
	* exec.c (_initialize_exec): Add declaration.
	* extension.c (_initialize_extension): Add declaration.
	* f-lang.c (_initialize_f_language): Add declaration.
	* f-valprint.c (_initialize_f_valprint): Add declaration.
	* fbsd-nat.c (_initialize_fbsd_nat): Add declaration.
	* fbsd-tdep.c (_initialize_fbsd_tdep): Add declaration.
	* filesystem.c (_initialize_filesystem): Add declaration.
	* findcmd.c (_initialize_mem_search): Add declaration.
	* findvar.c (_initialize_findvar): Add declaration.
	* fork-child.c (_initialize_fork_child): Add declaration.
	* frame-base.c (_initialize_frame_base): Add declaration.
	* frame-unwind.c (_initialize_frame_unwind): Add declaration.
	* frame.c (_initialize_frame): Add declaration.
	* frv-linux-tdep.c (_initialize_frv_linux_tdep): Add declaration.
	* frv-tdep.c (_initialize_frv_tdep): Add declaration.
	* ft32-tdep.c (_initialize_ft32_tdep): Add declaration.
	* gcore.c (_initialize_gcore): Add declaration.
	* gdb-demangle.c (_initialize_gdb_demangle): Add declaration.
	* gdb_bfd.c (_initialize_gdb_bfd): Add declaration.
	* gdbarch-selftests.c (_initialize_gdbarch_selftests): Add declaration.
	* gdbarch.c (_initialize_gdbarch): Add declaration.
	* gdbtypes.c (_initialize_gdbtypes): Add declaration.
	* gnu-nat.c (_initialize_gnu_nat): Add declaration.
	* gnu-v2-abi.c (_initialize_gnu_v2_abi): Add declaration.
	* gnu-v3-abi.c (_initialize_gnu_v3_abi): Add declaration.
	* go-lang.c (_initialize_go_language): Add declaration.
	* go32-nat.c (_initialize_go32_nat): Add declaration.
	* guile/guile.c (_initialize_guile): Add declaration.
	* h8300-tdep.c (_initialize_h8300_tdep): Add declaration.
	* hppa-linux-nat.c (_initialize_hppa_linux_nat): Add declaration.
	* hppa-linux-tdep.c (_initialize_hppa_linux_tdep): Add declaration.
	* hppa-nbsd-nat.c (_initialize_hppanbsd_nat): Add declaration.
	* hppa-nbsd-tdep.c (_initialize_hppanbsd_tdep): Add declaration.
	* hppa-obsd-nat.c (_initialize_hppaobsd_nat): Add declaration.
	* hppa-obsd-tdep.c (_initialize_hppabsd_tdep): Add declaration.
	* hppa-tdep.c (_initialize_hppa_tdep): Add declaration.
	* i386-bsd-nat.c (_initialize_i386bsd_nat): Add declaration.
	* i386-cygwin-tdep.c (_initialize_i386_cygwin_tdep): Add declaration.
	* i386-darwin-nat.c (_initialize_i386_darwin_nat): Add declaration.
	* i386-darwin-tdep.c (_initialize_i386_darwin_tdep): Add declaration.
	* i386-dicos-tdep.c (_initialize_i386_dicos_tdep): Add declaration.
	* i386-fbsd-nat.c (_initialize_i386fbsd_nat): Add declaration.
	* i386-fbsd-tdep.c (_initialize_i386fbsd_tdep): Add declaration.
	* i386-gnu-nat.c (_initialize_i386gnu_nat): Add declaration.
	* i386-gnu-tdep.c (_initialize_i386gnu_tdep): Add declaration.
	* i386-go32-tdep.c (_initialize_i386_go32_tdep): Add declaration.
	* i386-linux-nat.c (_initialize_i386_linux_nat): Add declaration.
	* i386-linux-tdep.c (_initialize_i386_linux_tdep): Add declaration.
	* i386-nbsd-nat.c (_initialize_i386nbsd_nat): Add declaration.
	* i386-nbsd-tdep.c (_initialize_i386nbsd_tdep): Add declaration.
	* i386-nto-tdep.c (_initialize_i386nto_tdep): Add declaration.
	* i386-obsd-nat.c (_initialize_i386obsd_nat): Add declaration.
	* i386-obsd-tdep.c (_initialize_i386obsd_tdep): Add declaration.
	* i386-sol2-nat.c (_initialize_amd64_sol2_nat): Add declaration.
	* i386-sol2-tdep.c (_initialize_i386_sol2_tdep): Add declaration.
	* i386-tdep.c (_initialize_i386_tdep): Add declaration.
	* i386-windows-nat.c (_initialize_i386_windows_nat): Add declaration.
	* ia64-libunwind-tdep.c (_initialize_libunwind_frame): Add declaration.
	* ia64-linux-nat.c (_initialize_ia64_linux_nat): Add declaration.
	* ia64-linux-tdep.c (_initialize_ia64_linux_tdep): Add declaration.
	* ia64-tdep.c (_initialize_ia64_tdep): Add declaration.
	* ia64-vms-tdep.c (_initialize_ia64_vms_tdep): Add declaration.
	* infcall.c (_initialize_infcall): Add declaration.
	* infcmd.c (_initialize_infcmd): Add declaration.
	* inflow.c (_initialize_inflow): Add declaration.
	* infrun.c (_initialize_infrun): Add declaration.
	* interps.c (_initialize_interpreter): Add declaration.
	* iq2000-tdep.c (_initialize_iq2000_tdep): Add declaration.
	* jit.c (_initialize_jit): Add declaration.
	* language.c (_initialize_language): Add declaration.
	* linux-fork.c (_initialize_linux_fork): Add declaration.
	* linux-nat.c (_initialize_linux_nat): Add declaration.
	* linux-tdep.c (_initialize_linux_tdep): Add declaration.
	* linux-thread-db.c (_initialize_thread_db): Add declaration.
	* lm32-tdep.c (_initialize_lm32_tdep): Add declaration.
	* m2-lang.c (_initialize_m2_language): Add declaration.
	* m32c-tdep.c (_initialize_m32c_tdep): Add declaration.
	* m32r-linux-nat.c (_initialize_m32r_linux_nat): Add declaration.
	* m32r-linux-tdep.c (_initialize_m32r_linux_tdep): Add declaration.
	* m32r-tdep.c (_initialize_m32r_tdep): Add declaration.
	* m68hc11-tdep.c (_initialize_m68hc11_tdep): Add declaration.
	* m68k-bsd-nat.c (_initialize_m68kbsd_nat): Add declaration.
	* m68k-bsd-tdep.c (_initialize_m68kbsd_tdep): Add declaration.
	* m68k-linux-nat.c (_initialize_m68k_linux_nat): Add declaration.
	* m68k-linux-tdep.c (_initialize_m68k_linux_tdep): Add declaration.
	* m68k-tdep.c (_initialize_m68k_tdep): Add declaration.
	* machoread.c (_initialize_machoread): Add declaration.
	* macrocmd.c (_initialize_macrocmd): Add declaration.
	* macroscope.c (_initialize_macroscope): Add declaration.
	* maint-test-options.c (_initialize_maint_test_options): Add declaration.
	* maint-test-settings.c (_initialize_maint_test_settings): Add declaration.
	* maint.c (_initialize_maint_cmds): Add declaration.
	* mdebugread.c (_initialize_mdebugread): Add declaration.
	* memattr.c (_initialize_mem): Add declaration.
	* mep-tdep.c (_initialize_mep_tdep): Add declaration.
	* mi/mi-cmd-env.c (_initialize_mi_cmd_env): Add declaration.
	* mi/mi-cmds.c (_initialize_mi_cmds): Add declaration.
	* mi/mi-interp.c (_initialize_mi_interp): Add declaration.
	* mi/mi-main.c (_initialize_mi_main): Add declaration.
	* microblaze-linux-tdep.c (_initialize_microblaze_linux_tdep): Add declaration.
	* microblaze-tdep.c (_initialize_microblaze_tdep): Add declaration.
	* mips-fbsd-nat.c (_initialize_mips_fbsd_nat): Add declaration.
	* mips-fbsd-tdep.c (_initialize_mips_fbsd_tdep): Add declaration.
	* mips-linux-nat.c (_initialize_mips_linux_nat): Add declaration.
	* mips-linux-tdep.c (_initialize_mips_linux_tdep): Add declaration.
	* mips-nbsd-nat.c (_initialize_mipsnbsd_nat): Add declaration.
	* mips-nbsd-tdep.c (_initialize_mipsnbsd_tdep): Add declaration.
	* mips-sde-tdep.c (_initialize_mips_sde_tdep): Add declaration.
	* mips-tdep.c (_initialize_mips_tdep): Add declaration.
	* mips64-obsd-nat.c (_initialize_mips64obsd_nat): Add declaration.
	* mips64-obsd-tdep.c (_initialize_mips64obsd_tdep): Add declaration.
	* mipsread.c (_initialize_mipsread): Add declaration.
	* mn10300-linux-tdep.c (_initialize_mn10300_linux_tdep): Add declaration.
	* mn10300-tdep.c (_initialize_mn10300_tdep): Add declaration.
	* moxie-tdep.c (_initialize_moxie_tdep): Add declaration.
	* msp430-tdep.c (_initialize_msp430_tdep): Add declaration.
	* nds32-tdep.c (_initialize_nds32_tdep): Add declaration.
	* nios2-linux-tdep.c (_initialize_nios2_linux_tdep): Add declaration.
	* nios2-tdep.c (_initialize_nios2_tdep): Add declaration.
	* nto-procfs.c (_initialize_procfs): Add declaration.
	* objc-lang.c (_initialize_objc_language): Add declaration.
	* observable.c (_initialize_observer): Add declaration.
	* opencl-lang.c (_initialize_opencl_language): Add declaration.
	* or1k-linux-tdep.c (_initialize_or1k_linux_tdep): Add declaration.
	* or1k-tdep.c (_initialize_or1k_tdep): Add declaration.
	* osabi.c (_initialize_gdb_osabi): Add declaration.
	* osdata.c (_initialize_osdata): Add declaration.
	* p-valprint.c (_initialize_pascal_valprint): Add declaration.
	* parse.c (_initialize_parse): Add declaration.
	* ppc-fbsd-nat.c (_initialize_ppcfbsd_nat): Add declaration.
	* ppc-fbsd-tdep.c (_initialize_ppcfbsd_tdep): Add declaration.
	* ppc-linux-nat.c (_initialize_ppc_linux_nat): Add declaration.
	* ppc-linux-tdep.c (_initialize_ppc_linux_tdep): Add declaration.
	* ppc-nbsd-nat.c (_initialize_ppcnbsd_nat): Add declaration.
	* ppc-nbsd-tdep.c (_initialize_ppcnbsd_tdep): Add declaration.
	* ppc-obsd-nat.c (_initialize_ppcobsd_nat): Add declaration.
	* ppc-obsd-tdep.c (_initialize_ppcobsd_tdep): Add declaration.
	* printcmd.c (_initialize_printcmd): Add declaration.
	* probe.c (_initialize_probe): Add declaration.
	* proc-api.c (_initialize_proc_api): Add declaration.
	* proc-events.c (_initialize_proc_events): Add declaration.
	* proc-service.c (_initialize_proc_service): Add declaration.
	* procfs.c (_initialize_procfs): Add declaration.
	* producer.c (_initialize_producer): Add declaration.
	* psymtab.c (_initialize_psymtab): Add declaration.
	* python/python.c (_initialize_python): Add declaration.
	* ravenscar-thread.c (_initialize_ravenscar): Add declaration.
	* record-btrace.c (_initialize_record_btrace): Add declaration.
	* record-full.c (_initialize_record_full): Add declaration.
	* record.c (_initialize_record): Add declaration.
	* regcache-dump.c (_initialize_regcache_dump): Add declaration.
	* regcache.c (_initialize_regcache): Add declaration.
	* reggroups.c (_initialize_reggroup): Add declaration.
	* remote-notif.c (_initialize_notif): Add declaration.
	* remote-sim.c (_initialize_remote_sim): Add declaration.
	* remote.c (_initialize_remote): Add declaration.
	* reverse.c (_initialize_reverse): Add declaration.
	* riscv-fbsd-nat.c (_initialize_riscv_fbsd_nat): Add declaration.
	* riscv-fbsd-tdep.c (_initialize_riscv_fbsd_tdep): Add declaration.
	* riscv-linux-nat.c (_initialize_riscv_linux_nat): Add declaration.
	* riscv-linux-tdep.c (_initialize_riscv_linux_tdep): Add declaration.
	* riscv-tdep.c (_initialize_riscv_tdep): Add declaration.
	* rl78-tdep.c (_initialize_rl78_tdep): Add declaration.
	* rs6000-aix-tdep.c (_initialize_rs6000_aix_tdep): Add declaration.
	* rs6000-lynx178-tdep.c (_initialize_rs6000_lynx178_tdep):
	Add declaration.
	* rs6000-nat.c (_initialize_rs6000_nat): Add declaration.
	* rs6000-tdep.c (_initialize_rs6000_tdep): Add declaration.
	* run-on-main-thread.c (_initialize_run_on_main_thread): Add declaration.
	* rust-exp.y (_initialize_rust_exp): Add declaration.
	* rx-tdep.c (_initialize_rx_tdep): Add declaration.
	* s12z-tdep.c (_initialize_s12z_tdep): Add declaration.
	* s390-linux-nat.c (_initialize_s390_nat): Add declaration.
	* s390-linux-tdep.c (_initialize_s390_linux_tdep): Add declaration.
	* s390-tdep.c (_initialize_s390_tdep): Add declaration.
	* score-tdep.c (_initialize_score_tdep): Add declaration.
	* ser-go32.c (_initialize_ser_dos): Add declaration.
	* ser-mingw.c (_initialize_ser_windows): Add declaration.
	* ser-pipe.c (_initialize_ser_pipe): Add declaration.
	* ser-tcp.c (_initialize_ser_tcp): Add declaration.
	* ser-uds.c (_initialize_ser_socket): Add declaration.
	* ser-unix.c (_initialize_ser_hardwire): Add declaration.
	* serial.c (_initialize_serial): Add declaration.
	* sh-linux-tdep.c (_initialize_sh_linux_tdep): Add declaration.
	* sh-nbsd-nat.c (_initialize_shnbsd_nat): Add declaration.
	* sh-nbsd-tdep.c (_initialize_shnbsd_tdep): Add declaration.
	* sh-tdep.c (_initialize_sh_tdep): Add declaration.
	* skip.c (_initialize_step_skip): Add declaration.
	* sol-thread.c (_initialize_sol_thread): Add declaration.
	* solib-aix.c (_initialize_solib_aix): Add declaration.
	* solib-darwin.c (_initialize_darwin_solib): Add declaration.
	* solib-dsbt.c (_initialize_dsbt_solib): Add declaration.
	* solib-frv.c (_initialize_frv_solib): Add declaration.
	* solib-svr4.c (_initialize_svr4_solib): Add declaration.
	* solib-target.c (_initialize_solib_target): Add declaration.
	* solib.c (_initialize_solib): Add declaration.
	* source-cache.c (_initialize_source_cache): Add declaration.
	* source.c (_initialize_source): Add declaration.
	* sparc-linux-nat.c (_initialize_sparc_linux_nat): Add declaration.
	* sparc-linux-tdep.c (_initialize_sparc_linux_tdep): Add declaration.
	* sparc-nat.c (_initialize_sparc_nat): Add declaration.
	* sparc-nbsd-nat.c (_initialize_sparcnbsd_nat): Add declaration.
	* sparc-nbsd-tdep.c (_initialize_sparcnbsd_tdep): Add declaration.
	* sparc-obsd-tdep.c (_initialize_sparc32obsd_tdep): Add declaration.
	* sparc-sol2-tdep.c (_initialize_sparc_sol2_tdep): Add declaration.
	* sparc-tdep.c (_initialize_sparc_tdep): Add declaration.
	* sparc64-fbsd-nat.c (_initialize_sparc64fbsd_nat): Add declaration.
	* sparc64-fbsd-tdep.c (_initialize_sparc64fbsd_tdep): Add declaration.
	* sparc64-linux-nat.c (_initialize_sparc64_linux_nat): Add declaration.
	* sparc64-linux-tdep.c (_initialize_sparc64_linux_tdep): Add declaration.
	* sparc64-nat.c (_initialize_sparc64_nat): Add declaration.
	* sparc64-nbsd-nat.c (_initialize_sparc64nbsd_nat): Add declaration.
	* sparc64-nbsd-tdep.c (_initialize_sparc64nbsd_tdep): Add declaration.
	* sparc64-obsd-nat.c (_initialize_sparc64obsd_nat): Add declaration.
	* sparc64-obsd-tdep.c (_initialize_sparc64obsd_tdep): Add declaration.
	* sparc64-sol2-tdep.c (_initialize_sparc64_sol2_tdep): Add declaration.
	* sparc64-tdep.c (_initialize_sparc64_adi_tdep): Add declaration.
	* stabsread.c (_initialize_stabsread): Add declaration.
	* stack.c (_initialize_stack): Add declaration.
	* stap-probe.c (_initialize_stap_probe): Add declaration.
	* std-regs.c (_initialize_frame_reg): Add declaration.
	* symfile-debug.c (_initialize_symfile_debug): Add declaration.
	* symfile-mem.c (_initialize_symfile_mem): Add declaration.
	* symfile.c (_initialize_symfile): Add declaration.
	* symmisc.c (_initialize_symmisc): Add declaration.
	* symtab.c (_initialize_symtab): Add declaration.
	* target.c (_initialize_target): Add declaration.
	* target-connection.c (_initialize_target_connection): Add
	declaration.
	* target-dcache.c (_initialize_target_dcache): Add declaration.
	* target-descriptions.c (_initialize_target_descriptions): Add declaration.
	* thread.c (_initialize_thread): Add declaration.
	* tic6x-linux-tdep.c (_initialize_tic6x_linux_tdep): Add declaration.
	* tic6x-tdep.c (_initialize_tic6x_tdep): Add declaration.
	* tilegx-linux-nat.c (_initialize_tile_linux_nat): Add declaration.
	* tilegx-linux-tdep.c (_initialize_tilegx_linux_tdep): Add declaration.
	* tilegx-tdep.c (_initialize_tilegx_tdep): Add declaration.
	* tracectf.c (_initialize_ctf): Add declaration.
	* tracefile-tfile.c (_initialize_tracefile_tfile): Add declaration.
	* tracefile.c (_initialize_tracefile): Add declaration.
	* tracepoint.c (_initialize_tracepoint): Add declaration.
	* tui/tui-hooks.c (_initialize_tui_hooks): Add declaration.
	* tui/tui-interp.c (_initialize_tui_interp): Add declaration.
	* tui/tui-layout.c (_initialize_tui_layout): Add declaration.
	* tui/tui-regs.c (_initialize_tui_regs): Add declaration.
	* tui/tui-stack.c (_initialize_tui_stack): Add declaration.
	* tui/tui-win.c (_initialize_tui_win): Add declaration.
	* tui/tui.c (_initialize_tui): Add declaration.
	* typeprint.c (_initialize_typeprint): Add declaration.
	* ui-style.c (_initialize_ui_style): Add declaration.
	* unittests/array-view-selftests.c (_initialize_array_view_selftests): Add declaration.
	* unittests/child-path-selftests.c (_initialize_child_path_selftests): Add declaration.
	* unittests/cli-utils-selftests.c (_initialize_cli_utils_selftests): Add declaration.
	* unittests/common-utils-selftests.c (_initialize_common_utils_selftests): Add declaration.
	* unittests/copy_bitwise-selftests.c (_initialize_copy_bitwise_utils_selftests): Add declaration.
	* unittests/environ-selftests.c (_initialize_environ_selftests): Add declaration.
	* unittests/filtered_iterator-selftests.c
	(_initialize_filtered_iterator_selftests): Add declaration.
	* unittests/format_pieces-selftests.c (_initialize_format_pieces_selftests): Add declaration.
	* unittests/function-view-selftests.c (_initialize_function_view_selftests): Add declaration.
	* unittests/help-doc-selftests.c (_initialize_help_doc_selftests): Add declaration.
	* unittests/lookup_name_info-selftests.c (_initialize_lookup_name_info_selftests): Add declaration.
	* unittests/main-thread-selftests.c
	(_initialize_main_thread_selftests): Add declaration.
	* unittests/memory-map-selftests.c (_initialize_memory_map_selftests): Add declaration.
	* unittests/memrange-selftests.c (_initialize_memrange_selftests): Add declaration.
	* unittests/mkdir-recursive-selftests.c (_initialize_mkdir_recursive_selftests): Add declaration.
	* unittests/observable-selftests.c (_initialize_observer_selftest): Add declaration.
	* unittests/offset-type-selftests.c (_initialize_offset_type_selftests): Add declaration.
	* unittests/optional-selftests.c (_initialize_optional_selftests): Add declaration.
	* unittests/parse-connection-spec-selftests.c (_initialize_parse_connection_spec_selftests): Add declaration.
	* unittests/rsp-low-selftests.c (_initialize_rsp_low_selftests): Add declaration.
	* unittests/scoped_fd-selftests.c (_initialize_scoped_fd_selftests): Add declaration.
	* unittests/scoped_mmap-selftests.c (_initialize_scoped_mmap_selftests): Add declaration.
	* unittests/scoped_restore-selftests.c (_initialize_scoped_restore_selftests): Add declaration.
	* unittests/string_view-selftests.c (_initialize_string_view_selftests): Add declaration.
	* unittests/style-selftests.c (_initialize_style_selftest): Add declaration.
	* unittests/tracepoint-selftests.c (_initialize_tracepoint_selftests): Add declaration.
	* unittests/tui-selftests.c (_initialize_tui_selftest): Add
	declaration.
	* unittests/unpack-selftests.c (_initialize_unpack_selftests): Add declaration.
	* unittests/utils-selftests.c (_initialize_utils_selftests): Add declaration.
	* unittests/vec-utils-selftests.c (_initialize_vec_utils_selftests): Add declaration.
	* unittests/xml-utils-selftests.c (_initialize_xml_utils): Add declaration.
	* user-regs.c (_initialize_user_regs): Add declaration.
	* utils.c (_initialize_utils): Add declaration.
	* v850-tdep.c (_initialize_v850_tdep): Add declaration.
	* valops.c (_initialize_valops): Add declaration.
	* valprint.c (_initialize_valprint): Add declaration.
	* value.c (_initialize_values): Add declaration.
	* varobj.c (_initialize_varobj): Add declaration.
	* vax-bsd-nat.c (_initialize_vaxbsd_nat): Add declaration.
	* vax-nbsd-tdep.c (_initialize_vaxnbsd_tdep): Add declaration.
	* vax-tdep.c (_initialize_vax_tdep): Add declaration.
	* windows-nat.c (_initialize_windows_nat): Add declaration.
	(_initialize_check_for_gdb_ini): Add declaration.
	(_initialize_loadable): Add declaration.
	* windows-tdep.c (_initialize_windows_tdep): Add declaration.
	* x86-bsd-nat.c (_initialize_x86_bsd_nat): Add declaration.
	* x86-linux-nat.c (_initialize_x86_linux_nat): Add declaration.
	* xcoffread.c (_initialize_xcoffread): Add declaration.
	* xml-support.c (_initialize_xml_support): Add declaration.
	* xstormy16-tdep.c (_initialize_xstormy16_tdep): Add declaration.
	* xtensa-linux-nat.c (_initialize_xtensa_linux_nat): Add declaration.
	* xtensa-linux-tdep.c (_initialize_xtensa_linux_tdep): Add declaration.
	* xtensa-tdep.c (_initialize_xtensa_tdep): Add declaration.

Change-Id: I13eec7e0ed2b3c427377a7bdb055cf46da64def9
 2020-01-13 14:01:38 -05:00
Joel Brobecker
b811d2c292 Update copyright year range in all GDB files. 
gdb/ChangeLog:

        Update copyright year range in all GDB files.
 2020-01-01 10:20:53 +04:00
Tom Tromey
268a13a5a3 Rename common to gdbsupport 
This is the next patch in the ongoing series to move gdbsever to the
top level.

This patch just renames the "common" directory.  The idea is to do
this move in two parts: first rename the directory (this patch), then
move the directory to the top.  This approach makes the patches a bit
more tractable.

I chose the name "gdbsupport" for the directory.  However, as this
patch was largely written by sed, we could pick a new name without too
much difficulty.

Tested by the buildbot.

gdb/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* contrib/ari/gdb_ari.sh: Change common to gdbsupport.
	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* gdbsupport: Rename from common.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES)
	(HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to
	gdbsupport.
	* aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c,
	amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c,
	amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c,
	amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c,
	amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c,
	arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c,
	arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c,
	arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c,
	arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c,
	auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h,
	btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c,
	charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c,
	cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c,
	coff-pe-read.c, command.h, compile/compile-c-support.c,
	compile/compile-c.h, compile/compile-cplus-symbols.c,
	compile/compile-cplus-types.c, compile/compile-cplus.h,
	compile/compile-loc2c.c, compile/compile.c, completer.c,
	completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c,
	cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c,
	darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c,
	disasm.h, dtrace-probe.c, dwarf-index-cache.c,
	dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c,
	dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c,
	event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c,
	features/aarch64-core.c, features/aarch64-fpu.c,
	features/aarch64-pauth.c, features/aarch64-sve.c,
	features/i386/32bit-avx.c, features/i386/32bit-avx512.c,
	features/i386/32bit-core.c, features/i386/32bit-linux.c,
	features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c,
	features/i386/32bit-segments.c, features/i386/32bit-sse.c,
	features/i386/64bit-avx.c, features/i386/64bit-avx512.c,
	features/i386/64bit-core.c, features/i386/64bit-linux.c,
	features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c,
	features/i386/64bit-segments.c, features/i386/64bit-sse.c,
	features/i386/x32-core.c, features/riscv/32bit-cpu.c,
	features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c,
	features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c,
	features/riscv/64bit-fpu.c, features/tic6x-c6xp.c,
	features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h,
	findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h,
	gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c,
	gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c,
	go32-nat.c, guile/guile.c, guile/scm-ports.c,
	guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c,
	i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c,
	i386-linux-tdep.c, i386-tdep.c, i387-tdep.c,
	ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c,
	inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h,
	inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h,
	inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c,
	linux-tdep.c, linux-thread-db.c, location.c, machoread.c,
	macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h,
	mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c,
	mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h,
	minsyms.c, mips-linux-tdep.c, namespace.h,
	nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h,
	nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c,
	nat/amd64-linux-siginfo.c, nat/fork-inferior.c,
	nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c,
	nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c,
	nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h,
	nat/linux-waitpid.c, nat/mips-linux-watch.c,
	nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c,
	nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c,
	nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h,
	obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c,
	parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c,
	procfs.c, producer.c, progspace.h, psymtab.h,
	python/py-framefilter.c, python/py-inferior.c, python/py-ref.h,
	python/py-type.c, python/python.c, record-btrace.c, record-full.c,
	record.c, record.h, regcache-dump.c, regcache.c, regcache.h,
	remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c,
	riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c,
	selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c,
	ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c,
	source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c,
	stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h,
	symtab.c, symtab.h, target-descriptions.c, target-descriptions.h,
	target-memory.c, target.c, target.h, target/waitstatus.c,
	target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c,
	top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c,
	tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h,
	unittests/array-view-selftests.c,
	unittests/child-path-selftests.c, unittests/cli-utils-selftests.c,
	unittests/common-utils-selftests.c,
	unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c,
	unittests/format_pieces-selftests.c,
	unittests/function-view-selftests.c,
	unittests/lookup_name_info-selftests.c,
	unittests/memory-map-selftests.c, unittests/memrange-selftests.c,
	unittests/mkdir-recursive-selftests.c,
	unittests/observable-selftests.c,
	unittests/offset-type-selftests.c, unittests/optional-selftests.c,
	unittests/parse-connection-spec-selftests.c,
	unittests/ptid-selftests.c, unittests/rsp-low-selftests.c,
	unittests/scoped_fd-selftests.c,
	unittests/scoped_mmap-selftests.c,
	unittests/scoped_restore-selftests.c,
	unittests/string_view-selftests.c, unittests/style-selftests.c,
	unittests/tracepoint-selftests.c, unittests/unpack-selftests.c,
	unittests/utils-selftests.c, unittests/xml-utils-selftests.c,
	utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c,
	value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c,
	xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c,
	xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport.

gdb/gdbserver/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS)
	(version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change
	common to gdbsupport.
	* ax.c, event-loop.c, fork-child.c, gdb_proc_service.h,
	gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c,
	inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c,
	linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c,
	linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c,
	linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h,
	nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c,
	server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h,
	thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change
	common to gdbsupport.
 2019-07-09 07:45:38 -06:00
Alan Hayward
2b40fda74b i386/AArch64: Remove old xml tests 
Both the i386, X86_64 and AArch64 builds of gdbserver include a bunch of legacy
xml files, dat files and auto generated C files, when building for unit test.

These tests exists back from when feature target descriptions were added to
prove that the new target descriptions were identical to the original
older versions. The old files are not used for anything other than these tests.

Now that this has been proven, we are not gaining anything by keeping the
original files and tests. Should new functionality be added, it would break
the tests, unless the functionality was backported to the xml. There is no
requirement that we must match the exact xml from N releases ago.  It adds
obfuscation, where as the feature target descriptions were meant to simplify
the code.

In addition, there are a bunch of xml and dat files which are completely unused.

This patch removes the selftests and the target descriptions from gdbserver.

Update the unittest to allow 0 tests (note, this failed on other targets that
never had any tests).

gdb/ChangeLog:

	* aarch64-tdep.c: Remove xml self tests.
	* amd64-linux-tdep.c: Likewise.
	* amd64-tdep.c: Likewise.
	* i386-linux-tdep.c: Likewise.
	* i386-tdep.c: Likewise.

gdb/gdbserver/ChangeLog:

	* configure.srv: Remove legacy xml.
	* linux-aarch64-low.c (initialize_low_arch): Remove
	initialize_low_tdesc call.
	* linux-aarch64-tdesc-selftest.c: Remove file.
	* linux-aarch64-tdesc.h (initialize_low_tdesc): Remove.
	* linux-x86-low.c (initialize_low_arch): Remove
	initialize_low_tdesc call.
	* linux-x86-tdesc-selftest.c: Remove file.
	* linux-x86-tdesc.h (initialize_low_tdesc): Remove.

gdb/testsuite/ChangeLog:

	* gdb.server/unittest.exp: Allow 0 unit tests to run.
 2019-07-04 11:55:20 +01:00
Tom Tromey
4de283e4b5 Revert the header-sorting patch 
Andreas Schwab and John Baldwin pointed out some bugs in the header
sorting patch; and I noticed that the output was not correct when
limited to a subset of files (a bug in my script).

So, I'm reverting the patch.  I may try again after fixing the issues
pointed out.

gdb/ChangeLog
2019-04-05  Tom Tromey  <tom@tromey.com>

	Revert the header-sorting patch.
	* ft32-tdep.c: Revert.
	* frv-tdep.c: Revert.
	* frv-linux-tdep.c: Revert.
	* frame.c: Revert.
	* frame-unwind.c: Revert.
	* frame-base.c: Revert.
	* fork-child.c: Revert.
	* findvar.c: Revert.
	* findcmd.c: Revert.
	* filesystem.c: Revert.
	* filename-seen-cache.h: Revert.
	* filename-seen-cache.c: Revert.
	* fbsd-tdep.c: Revert.
	* fbsd-nat.h: Revert.
	* fbsd-nat.c: Revert.
	* f-valprint.c: Revert.
	* f-typeprint.c: Revert.
	* f-lang.c: Revert.
	* extension.h: Revert.
	* extension.c: Revert.
	* extension-priv.h: Revert.
	* expprint.c: Revert.
	* exec.h: Revert.
	* exec.c: Revert.
	* exceptions.c: Revert.
	* event-top.c: Revert.
	* event-loop.c: Revert.
	* eval.c: Revert.
	* elfread.c: Revert.
	* dwarf2read.h: Revert.
	* dwarf2read.c: Revert.
	* dwarf2loc.c: Revert.
	* dwarf2expr.h: Revert.
	* dwarf2expr.c: Revert.
	* dwarf2-frame.c: Revert.
	* dwarf2-frame-tailcall.c: Revert.
	* dwarf-index-write.h: Revert.
	* dwarf-index-write.c: Revert.
	* dwarf-index-common.c: Revert.
	* dwarf-index-cache.h: Revert.
	* dwarf-index-cache.c: Revert.
	* dummy-frame.c: Revert.
	* dtrace-probe.c: Revert.
	* disasm.h: Revert.
	* disasm.c: Revert.
	* disasm-selftests.c: Revert.
	* dictionary.c: Revert.
	* dicos-tdep.c: Revert.
	* demangle.c: Revert.
	* dcache.h: Revert.
	* dcache.c: Revert.
	* darwin-nat.h: Revert.
	* darwin-nat.c: Revert.
	* darwin-nat-info.c: Revert.
	* d-valprint.c: Revert.
	* d-namespace.c: Revert.
	* d-lang.c: Revert.
	* ctf.c: Revert.
	* csky-tdep.c: Revert.
	* csky-linux-tdep.c: Revert.
	* cris-tdep.c: Revert.
	* cris-linux-tdep.c: Revert.
	* cp-valprint.c: Revert.
	* cp-support.c: Revert.
	* cp-namespace.c: Revert.
	* cp-abi.c: Revert.
	* corelow.c: Revert.
	* corefile.c: Revert.
	* continuations.c: Revert.
	* completer.h: Revert.
	* completer.c: Revert.
	* complaints.c: Revert.
	* coffread.c: Revert.
	* coff-pe-read.c: Revert.
	* cli-out.h: Revert.
	* cli-out.c: Revert.
	* charset.c: Revert.
	* c-varobj.c: Revert.
	* c-valprint.c: Revert.
	* c-typeprint.c: Revert.
	* c-lang.c: Revert.
	* buildsym.c: Revert.
	* buildsym-legacy.c: Revert.
	* build-id.h: Revert.
	* build-id.c: Revert.
	* btrace.c: Revert.
	* bsd-uthread.c: Revert.
	* breakpoint.h: Revert.
	* breakpoint.c: Revert.
	* break-catch-throw.c: Revert.
	* break-catch-syscall.c: Revert.
	* break-catch-sig.c: Revert.
	* blockframe.c: Revert.
	* block.c: Revert.
	* bfin-tdep.c: Revert.
	* bfin-linux-tdep.c: Revert.
	* bfd-target.c: Revert.
	* bcache.c: Revert.
	* ax-general.c: Revert.
	* ax-gdb.h: Revert.
	* ax-gdb.c: Revert.
	* avr-tdep.c: Revert.
	* auxv.c: Revert.
	* auto-load.c: Revert.
	* arm-wince-tdep.c: Revert.
	* arm-tdep.c: Revert.
	* arm-symbian-tdep.c: Revert.
	* arm-pikeos-tdep.c: Revert.
	* arm-obsd-tdep.c: Revert.
	* arm-nbsd-tdep.c: Revert.
	* arm-nbsd-nat.c: Revert.
	* arm-linux-tdep.c: Revert.
	* arm-linux-nat.c: Revert.
	* arm-fbsd-tdep.c: Revert.
	* arm-fbsd-nat.c: Revert.
	* arm-bsd-tdep.c: Revert.
	* arch-utils.c: Revert.
	* arc-tdep.c: Revert.
	* arc-newlib-tdep.c: Revert.
	* annotate.h: Revert.
	* annotate.c: Revert.
	* amd64-windows-tdep.c: Revert.
	* amd64-windows-nat.c: Revert.
	* amd64-tdep.c: Revert.
	* amd64-sol2-tdep.c: Revert.
	* amd64-obsd-tdep.c: Revert.
	* amd64-obsd-nat.c: Revert.
	* amd64-nbsd-tdep.c: Revert.
	* amd64-nbsd-nat.c: Revert.
	* amd64-nat.c: Revert.
	* amd64-linux-tdep.c: Revert.
	* amd64-linux-nat.c: Revert.
	* amd64-fbsd-tdep.c: Revert.
	* amd64-fbsd-nat.c: Revert.
	* amd64-dicos-tdep.c: Revert.
	* amd64-darwin-tdep.c: Revert.
	* amd64-bsd-nat.c: Revert.
	* alpha-tdep.c: Revert.
	* alpha-obsd-tdep.c: Revert.
	* alpha-nbsd-tdep.c: Revert.
	* alpha-mdebug-tdep.c: Revert.
	* alpha-linux-tdep.c: Revert.
	* alpha-linux-nat.c: Revert.
	* alpha-bsd-tdep.c: Revert.
	* alpha-bsd-nat.c: Revert.
	* aix-thread.c: Revert.
	* agent.c: Revert.
	* addrmap.c: Revert.
	* ada-varobj.c: Revert.
	* ada-valprint.c: Revert.
	* ada-typeprint.c: Revert.
	* ada-tasks.c: Revert.
	* ada-lang.c: Revert.
	* aarch64-tdep.c: Revert.
	* aarch64-ravenscar-thread.c: Revert.
	* aarch64-newlib-tdep.c: Revert.
	* aarch64-linux-tdep.c: Revert.
	* aarch64-linux-nat.c: Revert.
	* aarch64-fbsd-tdep.c: Revert.
	* aarch64-fbsd-nat.c: Revert.
	* aarch32-linux-nat.c: Revert.
 2019-04-06 13:47:34 -06:00
Tom Tromey
d55e5aa6b2 Sort includes for files gdb/[a-f]*.[chyl]. 
This patch sorts the include files for the files [a-f]*.[chyl].
The patch was written by a script.

Tested by the buildbot.

I will follow up with patches to sort the remaining files, by sorting
a subset, testing them, and then checking them in.

gdb/ChangeLog
2019-04-05  Tom Tromey  <tom@tromey.com>

	* ft32-tdep.c: Sort headers.
	* frv-tdep.c: Sort headers.
	* frv-linux-tdep.c: Sort headers.
	* frame.c: Sort headers.
	* frame-unwind.c: Sort headers.
	* frame-base.c: Sort headers.
	* fork-child.c: Sort headers.
	* findvar.c: Sort headers.
	* findcmd.c: Sort headers.
	* filesystem.c: Sort headers.
	* filename-seen-cache.h: Sort headers.
	* filename-seen-cache.c: Sort headers.
	* fbsd-tdep.c: Sort headers.
	* fbsd-nat.h: Sort headers.
	* fbsd-nat.c: Sort headers.
	* f-valprint.c: Sort headers.
	* f-typeprint.c: Sort headers.
	* f-lang.c: Sort headers.
	* extension.h: Sort headers.
	* extension.c: Sort headers.
	* extension-priv.h: Sort headers.
	* expprint.c: Sort headers.
	* exec.h: Sort headers.
	* exec.c: Sort headers.
	* exceptions.c: Sort headers.
	* event-top.c: Sort headers.
	* event-loop.c: Sort headers.
	* eval.c: Sort headers.
	* elfread.c: Sort headers.
	* dwarf2read.h: Sort headers.
	* dwarf2read.c: Sort headers.
	* dwarf2loc.c: Sort headers.
	* dwarf2expr.h: Sort headers.
	* dwarf2expr.c: Sort headers.
	* dwarf2-frame.c: Sort headers.
	* dwarf2-frame-tailcall.c: Sort headers.
	* dwarf-index-write.h: Sort headers.
	* dwarf-index-write.c: Sort headers.
	* dwarf-index-common.c: Sort headers.
	* dwarf-index-cache.h: Sort headers.
	* dwarf-index-cache.c: Sort headers.
	* dummy-frame.c: Sort headers.
	* dtrace-probe.c: Sort headers.
	* disasm.h: Sort headers.
	* disasm.c: Sort headers.
	* disasm-selftests.c: Sort headers.
	* dictionary.c: Sort headers.
	* dicos-tdep.c: Sort headers.
	* demangle.c: Sort headers.
	* dcache.h: Sort headers.
	* dcache.c: Sort headers.
	* darwin-nat.h: Sort headers.
	* darwin-nat.c: Sort headers.
	* darwin-nat-info.c: Sort headers.
	* d-valprint.c: Sort headers.
	* d-namespace.c: Sort headers.
	* d-lang.c: Sort headers.
	* ctf.c: Sort headers.
	* csky-tdep.c: Sort headers.
	* csky-linux-tdep.c: Sort headers.
	* cris-tdep.c: Sort headers.
	* cris-linux-tdep.c: Sort headers.
	* cp-valprint.c: Sort headers.
	* cp-support.c: Sort headers.
	* cp-namespace.c: Sort headers.
	* cp-abi.c: Sort headers.
	* corelow.c: Sort headers.
	* corefile.c: Sort headers.
	* continuations.c: Sort headers.
	* completer.h: Sort headers.
	* completer.c: Sort headers.
	* complaints.c: Sort headers.
	* coffread.c: Sort headers.
	* coff-pe-read.c: Sort headers.
	* cli-out.h: Sort headers.
	* cli-out.c: Sort headers.
	* charset.c: Sort headers.
	* c-varobj.c: Sort headers.
	* c-valprint.c: Sort headers.
	* c-typeprint.c: Sort headers.
	* c-lang.c: Sort headers.
	* buildsym.c: Sort headers.
	* buildsym-legacy.c: Sort headers.
	* build-id.h: Sort headers.
	* build-id.c: Sort headers.
	* btrace.c: Sort headers.
	* bsd-uthread.c: Sort headers.
	* breakpoint.h: Sort headers.
	* breakpoint.c: Sort headers.
	* break-catch-throw.c: Sort headers.
	* break-catch-syscall.c: Sort headers.
	* break-catch-sig.c: Sort headers.
	* blockframe.c: Sort headers.
	* block.c: Sort headers.
	* bfin-tdep.c: Sort headers.
	* bfin-linux-tdep.c: Sort headers.
	* bfd-target.c: Sort headers.
	* bcache.c: Sort headers.
	* ax-general.c: Sort headers.
	* ax-gdb.h: Sort headers.
	* ax-gdb.c: Sort headers.
	* avr-tdep.c: Sort headers.
	* auxv.c: Sort headers.
	* auto-load.c: Sort headers.
	* arm-wince-tdep.c: Sort headers.
	* arm-tdep.c: Sort headers.
	* arm-symbian-tdep.c: Sort headers.
	* arm-pikeos-tdep.c: Sort headers.
	* arm-obsd-tdep.c: Sort headers.
	* arm-nbsd-tdep.c: Sort headers.
	* arm-nbsd-nat.c: Sort headers.
	* arm-linux-tdep.c: Sort headers.
	* arm-linux-nat.c: Sort headers.
	* arm-fbsd-tdep.c: Sort headers.
	* arm-fbsd-nat.c: Sort headers.
	* arm-bsd-tdep.c: Sort headers.
	* arch-utils.c: Sort headers.
	* arc-tdep.c: Sort headers.
	* arc-newlib-tdep.c: Sort headers.
	* annotate.h: Sort headers.
	* annotate.c: Sort headers.
	* amd64-windows-tdep.c: Sort headers.
	* amd64-windows-nat.c: Sort headers.
	* amd64-tdep.c: Sort headers.
	* amd64-sol2-tdep.c: Sort headers.
	* amd64-obsd-tdep.c: Sort headers.
	* amd64-obsd-nat.c: Sort headers.
	* amd64-nbsd-tdep.c: Sort headers.
	* amd64-nbsd-nat.c: Sort headers.
	* amd64-nat.c: Sort headers.
	* amd64-linux-tdep.c: Sort headers.
	* amd64-linux-nat.c: Sort headers.
	* amd64-fbsd-tdep.c: Sort headers.
	* amd64-fbsd-nat.c: Sort headers.
	* amd64-dicos-tdep.c: Sort headers.
	* amd64-darwin-tdep.c: Sort headers.
	* amd64-bsd-nat.c: Sort headers.
	* alpha-tdep.c: Sort headers.
	* alpha-obsd-tdep.c: Sort headers.
	* alpha-nbsd-tdep.c: Sort headers.
	* alpha-mdebug-tdep.c: Sort headers.
	* alpha-linux-tdep.c: Sort headers.
	* alpha-linux-nat.c: Sort headers.
	* alpha-bsd-tdep.c: Sort headers.
	* alpha-bsd-nat.c: Sort headers.
	* aix-thread.c: Sort headers.
	* agent.c: Sort headers.
	* addrmap.c: Sort headers.
	* ada-varobj.c: Sort headers.
	* ada-valprint.c: Sort headers.
	* ada-typeprint.c: Sort headers.
	* ada-tasks.c: Sort headers.
	* ada-lang.c: Sort headers.
	* aarch64-tdep.c: Sort headers.
	* aarch64-ravenscar-thread.c: Sort headers.
	* aarch64-newlib-tdep.c: Sort headers.
	* aarch64-linux-tdep.c: Sort headers.
	* aarch64-linux-nat.c: Sort headers.
	* aarch64-fbsd-tdep.c: Sort headers.
	* aarch64-fbsd-nat.c: Sort headers.
	* aarch32-linux-nat.c: Sort headers.
 2019-04-05 19:09:35 -06:00