Commit Graph

33876 Commits

Author SHA1 Message Date
Ulrich Weigand 0ff3e01fdc PowerPC64 little-endian fixes: 128-bit DFP parameters / registers
The powerpc64le-linux ABI specifies that when a 128-bit DFP value is
passed in a pair of floating-point registers, the first register holds
the most-significant part of the value.  This is as opposed to the
usual rule on little-endian systems, where the first register would
hold the least-significant part.

This affects two places in GDB, the read/write routines for the
128-bit DFP pseudo-registers, and the function call / return
sequence.  For the former, current code already distinguishes
between big- and little-endian targets, but gets the latter
wrong.  This is presumably because *GCC* also got it wrong,
and GDB matches the old GCC behavior.  But GCC is now fixed:
http://gcc.gnu.org/ml/gcc-patches/2013-11/msg02145.html
so GDB needs to be fixed too.  (Old code shouldn't really be
an issue since there is no code "out there" so far that uses
dfp128 on little-endian ...)

gdb/ChangeLog:

	* ppc-sysv-tdep.c (ppc64_sysv_abi_push_freg): Use correct order
	within a register pair holding a DFP 128-bit value on little-endian.
	(ppc64_sysv_abi_return_value_base): Likewise.
	* rs6000-tdep.c (dfp_pseudo_register_read): Likewise.
	(dfp_pseudo_register_write): Likewise.

gdb/testsuite/ChangeLog:

	* gdb.arch/powerpc-d128-regs.exp: Enable on powerpc64*-*.
2014-02-04 18:36:54 +01:00
Ulrich Weigand 5b757e5ddb PowerPC64 little-endian fixes: 32-bit DFP parameters
Passing a 32-bit DFP in register needs to use the least-significant part
of the register.  Like with a previous patch that addressed the same
issue for small structs, this patch makes sure the appropriate offset
is used on little-endian systems.

gdb/ChangeLog:

	* ppc-sysv-tdep.c (ppc64_sysv_abi_push_freg): Use correct
	offset on little-endian when passing _Decimal32.
	(ppc64_sysv_abi_return_value_base): Likewise for return values.
2014-02-04 18:36:47 +01:00
Ulrich Weigand 084ee54552 PowerPC64 little-endian fixes: VSX tests and pseudo-regs
Many VSX test were failing on powerpc64le-linux, since -as opposed to the
AltiVec tests- there never were little-endian versions of the test patterns.

This patch adds such patterns, along the lines of altivec-regs.exp.

In addition, there is an actual code change required: For those VSX
registers that overlap a floating-point register, the FP register
overlaps the most-significant half of the VSX register both on big-
and little-endian systems.  However, on little-endian systems, that
half is stored at an offset of 8 bytes (not 0).  This works already
for the "real" FP registers, but current code gets it wrong for
the "extended" pseudo FP register GDB generates for the second
half of the VSX register bank.

This patch updates the corresponding pseudo read/write routines
to take the appropriate offset into consideration.

gdb/ChangeLog:

	* rs6000-tdep.c (efpr_pseudo_register_read): Use correct offset
	of the overlapped FP register within the VSX register on little-
	endian platforms.
	(efpr_pseudo_register_write): Likewise.

gdb/testsuite/ChangeLog:

	* gdb.arch/vsx-regs.exp: Check target endianness.  Provide variants
	of the test patterns for use on little-endian systems.
2014-02-04 18:31:38 +01:00
Ulrich Weigand 6ed14ff339 PowerPC64 little-endian fixes: AltiVec tests
A couple of AltiVec tests fail spuriously on powerpc64le-linux, because
they compare against an incorrect pattern.  Note that those tests already
contain little-endian variants of the patterns, but those seem to have
bit-rotted a bit: when outputting a vector, GDB no longer omits trailing
zero elements (as it used to do in the past).

This patch updates the pattern to the new GDB output behavior.

In addition, the patch updates the endian test to use the new
gdb_test_multiple logic instead of gdb_expect.

gdb/testsuite/ChangeLog:

	* gdb.arch/altivec-regs.exp: Use gdb_test_multiple for endian test.
	(decimal_vector): Fix for little-endian.
2014-02-04 18:28:24 +01:00
Ulrich Weigand d63167affc PowerPC64 little-endian fixes: structure passing
When passing a small structure in a GPR, the ABI specifies that it
should be passed in the least-significant bytes of the register
(or stack slot).  On big-endian systems, this means the value
needs to be stored at an offset, which is what current code does.

However, on little-endian systems, the least-significant bytes are
addresses with offset 0.  This patch fixes that.

gdb/ChangeLog:

	* ppc-sysv-tdep.c (ppc64_sysv_abi_push_val): Use correct
	offset on little-endian when passing small structures.
2014-02-04 18:26:26 +01:00
Ulrich Weigand e765b44c38 Refactor ppc64 function call and return value handling
This patch refactors the ppc64 function call and return value handling code
in ppc-sysv-tdep.c.  The main problem to be addressed by this refactoring
is the code duplication caused by certain aggregate types:

According to the ABI, some types are to be decomposed into component types
for parameter and return value handling.  For example, complex types are
to be passed as if the real and imaginary component were separate arguments.
Similarly, certain OpenCL vector types are passed as if they were multiple
separate arguments of the vector element type.  With the new ELFv2 ABI,
there is another case: "homogeneous aggregates" (e.g. a struct containing
4 floats) are passed in multiple floating point registers as well.

Unfortunately, the current code is not structured to easily model these
ABI properties.  For example, code to pass complex values re-implements
code to pass the underlying (floating-point) type.  This has already
led to some unfortunate code duplication, and with the addition of
ELFv2 ABI support, I would have had to add yet more such duplication.

To avoid that, I've decided to refactor the code in order to re-use
subroutines that handle the "base" types when handling those aggregate
types.  This was not intended to cause any difference on current
(ELFv1) ABI code, but in fact it fixes a bug:

FAIL: gdb.base/varargs.exp: print find_max_float_real(4, fc1, fc2, fc3, fc4)

This was caused by the old code in ppc64_sysv_abi_push_float incorrectly
handling floating-point arguments to vararg routines, which just happens
to work out correctly automatically in the refactored code ...

gdb/ChangeLog:

	* ppc-sysv-tdep.c (get_decimal_float_return_value): Update comment.
	(struct ppc64_sysv_argpos): New data structure.
	(ppc64_sysv_abi_push_float): Remove.
	(ppc64_sysv_abi_push_val): New function.
	(ppc64_sysv_abi_push_integer): Likewise.
	(ppc64_sysv_abi_push_freg): Likewise.
	(ppc64_sysv_abi_push_vreg): Likewise.
	(ppc64_sysv_abi_push_param): Likewise.
	(ppc64_sysv_abi_push_dummy_call): Refactor to use those new routines.
	(ppc64_sysv_abi_return_value_base): New function.
	(ppc64_sysv_abi_return_value): Refactor to use it.
2014-02-04 18:24:42 +01:00
Ulrich Weigand 36c24d9538 Document support for powerpc64le-*-linux* target
gdb/ChangeLog:

	* NEWS: Document new target powerpc64le-*-linux*.
2014-02-04 18:23:08 +01:00
Mark Kettenis 26fd922825 Add support for ELF core files on OpenBSD/sparc64.
gdb/ChangeLog:

        * sparc64obsd-tdep.c (sparc64obsd_gregset): New variable.
        (sparc64obsd_supply_gregset): Handle registers sets used in ELF
        core dumps.
        (sparc64obsd_init_abi): Adjust minimum size of the general purpose
        register set used in ELF core dumps.  Add floating-point register set.
2014-02-04 13:18:15 +01:00
Kevin Buettner c5bb736278 Update mn10300 dwarf register map
This change updates the mn10300 dwarf register map.  It reduces the
failure count when doing simulator testing against the default
multilib from 788 to 99.

gdb/ChangeLog:

	* mn10300-tdep.c (mn10300_dwarf2_reg_to_regnum): Rewrite
	dwarf2_to_gdb[] table using symbolic constants.  Adjust
	penultimate entry from number representing the PC register
	to symbolic constant representing the MDR register.  Add
	constant for the PC register to the end of the table.
2014-02-03 21:52:59 -07:00
Mark Kettenis af09351e0f Fix build on recent versions of OpenBSD.
gdb/ChangeLog:

        * bsd-kvm.c: Include <sys/param.h>
2014-02-03 14:38:59 +01:00
Mark Kettenis 8507e05d53 Fix build on OpenBSD/sparc64.
gdb/ChangeLog:

        * sparc64nbsd-nat.c (sparc64nbsd_supply_fpregset): Fix prototype.
2014-02-03 14:29:28 +01:00
Joel Brobecker ae56bfb8e7 Delete ada-lang.h::clear_ada_sym_cache (nonexistant function).
I happen to notice this extern function declaration in ada-lang.h
which does not actually exist...

gdb/ChangeLog:

        * ada-lang.h (clear_ada_sym_cache): Delete.
2014-01-31 15:32:00 +04:00
Ulrich Weigand 718ee4dc9b Add support for AT_HWCAP2 auxv entry
Recent ppc64 Linux kernels provide a new auxv entry AT_HWCAP2,
which is currently not recognized by GDB, causing every use of
"info auxv" to show an error.

This commit adds the AT_HWCAP2 define to include/elf/common.h
and handles it in GDB.

include/elf/ChangeLog:

	* common.h (AT_HWCAP2): Define.

gdb/ChangeLog:

	* auxv.c (fprint_target_auxv): Handle AT_HWCAP2.
2014-01-30 19:12:35 +01:00
Jose E. Marchesi 401e27fd71 This changeset makes sparc64_linux_step_trap to return 0 when a
breakpoint is set in a `ta 0x6d´ which is not a sigreturn syscall.  In
these cases no rt_frame exists in the stack and thus the read PC is
wrong.

ChangeLog
2014-01-29  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* sparc64-linux-tdep.c (sparc64_linux_step_trap): Get PC from
          the sigreturn register save area only if the syscall is
          sigreturn.

testsuite/ChangeLog
2014-01-29  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* gdb.arch/sparc-sysstep.exp: New file.
	* gdb.arch/sparc-sysstep.c: Likewise.

	* gdb.arch/Makefile.in (EXECUTABLES): Add sparc-sysstep.
2014-01-29 07:15:05 -08:00
Joel Brobecker a7c88acd1e Minor reformatting in valops.c::value_slice
I noticed that a small lexical block was over indented by 2 characters.
So this patch starts by reducing the indentation.

While looking at this area of the code, I also noticed a couple of lines
that had trailing spaces, so this patch also removes them.

And finally, it fixes one tiny to put the assignment operator at
the start of the next line, rather than at the end of the first line.

gdb/ChangeLog:

        * valops.c (value_slice): Minor reformatting.
2014-01-29 14:41:04 +04:00
Edjunior Barbosa Machado 8b92472967 Fix info-shared.exp testcase to expect the leading `.' found on ppc64's symbols.
gdb/testsuite/
2014-01-28  Edjunior Barbosa Machado  <emachado@linux.vnet.ibm.com>

	* gdb.base/info-shared.exp: Expect leading `.' on ppc64's symbols.
2014-01-28 15:31:23 -02:00
Ulrich Weigand fa0079ea72 Fix typo in ppc64_standard_linkage7
The ppc64_standard_linkage7 pattern added by Alan's recent patch:
https://sourceware.org/ml/gdb-patches/2013-11/msg00274.html
contains a typo: the ELFv2 TOC slot offset is 24, not 40.
This was correct in the comment, but not the actual code.

ChangeLog:

	* ppc64-tdep.c (ppc64_standard_linkage7): Fix typo.
2014-01-28 17:49:13 +01:00
Joel Brobecker c6044dd124 New Ada maintenance command to ignore descriptive types (DWARF).
Currently, Ada debugging requires the use of certain GNAT-specific
encodings, which are generated by the compiler. These encodings
were created a long time ago to work around the fairly limited
capabilities of the stabs debugging format. With DWARF, the vast
majority of the encodings could be abandoned in favor of a pure
DWARF approach.

In order to make it easier to evaluate the quality of the DWARF
debugging information generated by the compiler, and how the debugger
handles it, we are introducing a small Ada-specific maintenance
setting which changes the debugger's behavior to ignore descriptive
types. Descriptive types are artificial types generated by the
compiler purely to give the debugger hints as to how to properly
decode certain properties of a type.  For instance, for array
types, it generates a parallel type whose name is the name of
the array suffixed with ___XA, whose contents tells us what
the array's index type is, and possibly its bounds. See GCC's
gcc/ada/exp_dbug.ads for the full description of all encodings.

This is only a first step, as this setting does not deactivate
all encodings; More settings dedicated to each type of encoding
will likely be implemented in the future, as we make progress.

gdb/ChangeLog:

        * ada-lang.c (maint_set_ada_cmdlist, maint_show_ada_cmdlist):
        New static globals.
        (maint_set_ada_cmd, maint_show_ada_cmd): New functions.
        (ada_ignore_descriptive_types_p): New static global.
        (find_parallel_type_by_descriptive_type): Return immediately
        if ada_ignore_descriptive_types_p is set.
        (_initialize_ada_language): Register new commands "maintenance
        set ada", "maintenance show ada", "maintenance set ada
        ignore-descriptive-types" and "maintenance show ada
        ignore-descriptive-types".
        * NEWS: Add entry for new "maint ada set/show
        ignore-descriptive-types" commands.

gdb/doc/ChangeLog:

        * gdb.texinfo (Ada Glitches): Document the new "maint ada set/show
        ignore-descriptive-types". commands.
2014-01-28 07:01:48 +04:00
Markus Metzger 568e808b7d btrace: initiate teardown when closing record btrace target
The to_teardown_btrace target method is used to free btrace resources
during shutdown when target record has already been unpushed and we
can't reliably talk to a remote target to disable branch tracing.

Tracing resources are freed for each thread when the thread is removed;
both on the GDB side and on the gdbserver side.

In the remote case, the remote target that provides to_teardown_btrace
to free the GDB side resources has already been unpushed when threads
are destroyed.  This results in a complaint "You can't do this ..." and
in a few bytes of memory leaked for each thread.

Initiate btrace teardown in record_btrace_close, so the remote target is
still in place.

2014-01-27  Markus Metzger  <markus.t.metzger@intel.com>

	* record-btrace.c (record_btrace_close): Call btrace_teardown
	for all threads.
2014-01-27 08:56:16 +01:00
Joel Brobecker 467d141bf5 ada-lang.c: Really include "ui-out.h".
Currently, ada-lang.c pretends to include "ui-out.h" as follow:

    #ifdef UI_OUT
    #include "ui-out.h"
    #endif

However, UI_OUT is never defined as far as I can tell. This is confirmed
by rebuilding with a #error pragma inside the #ifdef UI_OUT block,
which never triggers.

Since this unit makes references to declarations from ui-out.h,
this patch simply removes the #ifdef/#endif condition.  This has not
been an error so far because "ui-out.h" indirectly gets included,
via one of the other .h files being included.

gdb/ChangeLog:

        * ada-lang.c: Remove "#ifdef UI_OUT" condition for including
        "ui-out.h".
2014-01-27 08:29:47 +04:00
Joel Brobecker fb15121096 Try printing array range using the name of its index type
type Char_Table is array (Character range Character'First .. Character'Last)
     of Natural;

Trying to print the type description of this type currently yields:

   (gdb) ptype char_table
   type = array ('["00"]' .. '["ff"]') of natural

Although technically correct, it seemed more useful to print the array
range as:

   (gdb) ptype char_table
   type = array (character) of natural

This patch implements this suggestion.

gdb/ChangeLog:

        * ada-typeprint (type_is_full_subrange_of_target_type):
        New function.
        (print_range): Add parameter bounds_prefered_p.  If not set,
        try printing range types using the name of their base type.
        (print_range_type): Add parameter bounds_prefered_p.
        Use it in call to print_range.
        (print_array_type, ada_print_type): Update calls to print_range
        and print_range_type.

gdb/testsuite/ChangeLog:

        * gdb.ada/array_char_idx: New testcase.
2014-01-27 08:27:21 +04:00
Joel Brobecker aba0210970 Remove unncessary function declarations in ada-typeprint.c.
These declarations are unncessary, and make it extra work when trying
to change the profile of one of these functions. This patch just
removes them.

Note that one of them (print_dynamic_range_bound), was improperly
indented.

gdb/ChangeLog:

        * ada-typeprint.c (print_array_type, print_choices, print_range)
        (print_range_bound, print_dynamic_range_bound, print_range_type):
        Remove declaration.
2014-01-27 08:21:36 +04:00
Joel Brobecker e62e21fd47 Add missing empty line after declaration in ada-typeprint.c:print_range.
gdb/ChangeLog:

        * ada-typeprint.c (print_range): Add missing empty line
        after local declaration.
2014-01-27 08:19:54 +04:00
Joel Brobecker 859cf5d1de [Ada] Array bound incorrectly printed for array indexed by enum subrange
Consider the following declarations:

   type Range_Type is (One, Two, Three);
   type Array_Type is array (Range_Type range One .. Two) of Integer;
   A : Array_Type := (1, 2);

Trying to print A can yield:

   (gdb) print a
   $1 = (one => 1, 2)

The bound of the first element should not have been printed, since
"one" is the first enumerate of type Range_Type. Similarly, with
the following declarations:

   type Array2_Type is array (Range_Type range Two .. Three) of Integer;
   A2 : Array2_Type := (2, 3);

GDB is failing to print the bound of the first element of "A2":

   (gdb) print a2
   $2 = (2, 3)

This is because the index type for both types Array_Type and Array2_Type
are subranges (by DWARF definition for arrays), of an anonymous subrange
type. When deciding whether to print the bound of the first element,
we handle subranges, but only up to one level. This patch enhanced
the code to handle any number of subrange levels.

gdb/ChangeLog:

        * ada-valprint.c (print_optional_low_bound): Get index_type's
        target type for as long as it is a TYPE_CODE_RANGE.

No testcase with this patch, but this will be tested via the testcase
of another patch, which uses the DWARF assembler to generate debugging
info for an array indexed by an enum.
2014-01-27 08:13:49 +04:00
Joel Brobecker 25790f6fc1 Remove assert in procfs.c::procfs_make_note_section (x86-solaris)
On x86-solaris, the gcore command sometimes triggers the following
internal error:

    (gdb) gcore
    /[...]/procfs.c:5523: internal-error: procfs_make_note_section: Assertion `thread_args.note_data != note_data' failed.

The problem is extremely elusive, for reasons that will become clearer
as I explain what is going on.

The program used to produce this issue was really simple:

    | void break_me (void) { }
    |
    | int
    | main (void)
    | {
    |   break_me ();
    |   return 0;
    | }

The procfs_make_note_section builds a buffer incrementally with
the contents of the core's notes section.  The interesting bits are:

  char *note_data = NULL;
  [...]
  note_data = (char *) elfcore_write_prpsinfo (obfd,
                                               note_data,
                                               note_size,
                                               fname,
                                               psargs);

This is the first call to bfd's elfcore which initializes note_data.
After that, we have a few more calls, which keep updating notes_data
and note_size, but our interest lies in the following part of
the function:

  thread_args.note_data = note_data;
  [...]
  proc_iterate_over_threads (pi, procfs_corefile_thread_callback,
                             &thread_args);
  /* There should be always at least one thread.  */
  gdb_assert (thread_args.note_data != note_data);

The comment implies that the assert is to verify that our loop
iterated over at least one thread. The check is relying on the
fact that the notes_data returned by the elfcore module changes
at each iteration, via (in procfs_corefile_thread_callback):

      args->note_data = procfs_do_thread_registers (args->obfd, ptid,
                                                    args->note_data,
                                                    args->note_size,
                                                    args->stop_signal);

(which calls elfcore_write_lwpstatus).

But, while it happens most of the time, thanks to a call to realloc
in elfcore_write_note (the function that actually appends the data
at the end of the notes buffer),...

       buf = (char *) realloc (buf, *bufsiz + newspace);

... this is by no means guarantied. In fact, under the right
circumstances, the buffer was grown twice without changing
addresses. Unfortunately, the circumstances are very sensitive,
thus making this bug very elusive.

This patch fixes the problem by simply removing the assert.
This means we're losing the assertion that there is at least one
thread, but I think that's OK. If we still want to keep the
assertion, we have the option of either checking the buffer
size, or else adding a boolean flag in the context structure
that we'd set to true as soon as we have a thread.

gdb/ChangeLog:

        * procfs.c (procfs_make_note_section): Remove assertion and
        associated comment.
2014-01-27 07:01:09 +04:00
Yao Qi 6b6aa82881 Change len's type to ULONGEST: remote_read_bytes and get_core_siginfo
Functions remote_read_bytes and get_core_siginfo are the callees of
target to_xfer_partial interface, so argument 'len' should be changed
to type ULONGEST.

gdb:

2014-01-24  Yao Qi  <yao@codesourcery.com>

	* remote.c (remote_read_bytes): Change type of len to ULONGEST.
	* corelow.c (get_core_siginfo): Likewise.
2014-01-24 21:31:30 +08:00
Yao Qi 5d6df42390 Change len's type to ULONGEST: remote_write_bytes_aux
Hi,
This patch changes the type of 'len' from ssize_t to ULONGEST.

At the beginning Siddhesh Poyarekar proposed this patch

  [PATCH] Memory reads and writes should have size_t length
  https://sourceware.org/ml/gdb-patches/2012-05/msg01073.html

to change type of 'len' to size_t.  However, after Jan's review, we
decide to change it to ssize_t, because callers of these functions
may pass signed type to them.

AFAICS, the target layer is a boundary.  In one side, we pass size_t
or ssize_t to target related APIs, and in the other side, the
implementation side, we used LONGEST (ULONGEST in latest code) because
of to_xfer_partial.

Since remote_write_bytes_aux and remote_write_bytes belong to the
implementation of remote target, we should use ULONGEST for len, IMO.

Regression tested on x86_64-linux.  Is it OK?

gdb:

2014-01-24  Yao Qi  <yao@codesourcery.com>

	* remote.c (remote_write_bytes_aux): Change type of 'len' to
	ULONGEST.  Don't check 'len' is negative.
	(remote_write_bytes):  Change type of 'len' to ULONGEST.
2014-01-24 21:31:26 +08:00
Tom Tromey 83b645b833 avoid python exception in FrameDecorator.py
This fixes a bug in FrameDecorator.py.

FrameVars seems to assume that Frame.block can return None if there is
no block.  However, it actually throws an exception.

I saw this bug while developing a frame filter, but unfortunately I
don't know how to reproduce it.  It seems to me that the SAL tests in
_is_limited_frame should exclude the bad cases; and in my attempts to
write a test they do.

Nevertheless I think the fix is reasonably obvious and ought to go in.

2014-01-23  Tom Tromey  <tromey@redhat.com>

	PR python/16485:
	* python/lib/gdb/FrameDecorator.py: (FrameVars.fetch_frame_args):
	Handle exception from frame.block.
	(FrameVars.fetch_frame_locals): Likewise.
2014-01-23 08:03:52 -07:00
Tom Tromey 0740f8d82d fix erroneous error-handling in frame filter code
This fixes PR python/16487.

The bug here is that the function-name-handling code in py_print_frame
had a small logic error (really a misplaced closing brace).  This
error could lead to a Py_DECREF(NULL), which crashes.

This patch fixes the bug in the obvious way.

Built and regtested on x86-64 Fedora 18.  New test case included.

2014-01-23  Tom Tromey  <tromey@redhat.com>

	PR python/16487:
	* python/py-framefilter.c (py_print_frame): Don't call Py_DECREF
	on a NULL pointer.  Move "goto error" to correct place.

2014-01-23  Tom Tromey  <tromey@redhat.com>

	PR python/16487:
	* gdb.python/py-framefilter.exp: Add test using "Error" filter.
	* gdb.python/py-framefilter.py (ErrorInName, ErrorFilter): New
	classes.
2014-01-23 08:03:51 -07:00
Tom Tromey 21909fa1c6 fix crash in frame filters
apply_frame_filter calls ensure_python_env before computing the
gdbarch to use.  This means that python_gdbarch can be NULL while in
Python code, and if a frame filter depends on this somehow (easy to
do), gdb will crash.

The fix is to compute the gdbarch first.

Built and regtested on x86-64 Fedora 18.
New test case included.

2014-01-23  Tom Tromey  <tromey@redhat.com>

	PR python/16491:
	* python/py-framefilter.c (apply_frame_filter): Call
	ensure_python_env after computing gdbarch.

2014-01-23  Tom Tromey  <tromey@redhat.com>

	PR python/16491:
	* gdb.python/py-framefilter.py (Reverse_Function.function): Read a
	string from an inferior frame.
	* gdb.python/py-framefilter-mi.exp: Update.
2014-01-23 08:03:50 -07:00
Yao Qi 17fde6d091 Use gdb_byte * instead of void *
This patch changes the argument type to gdb_byte * in order to align
with the to_xfer_partial interface.

gdb:

2014-01-23  Yao Qi  <yao@codesourcery.com>

	* target.c (raw_memory_xfer_partial): Change argument type
	from void * to gdb_byte *.
	(memory_xfer_partial_1, memory_xfer_partial): Likewise.
2014-01-23 11:50:29 +08:00
Doug Evans f5a0277332 * gdbthread.h (gdb_id_to_thread): Delete, unused. 2014-01-22 16:42:07 -08:00
Doug Evans 87ce2a04c5 New gdbserver option --debug-format=timestamp.
* NEWS: Mention it.

	gdbserver/
	* configure.ac (AC_CHECK_FUNCS): Add test for gettimeofday.
	* configure: Regenerate.
	* config.in: Regenerate.
	* Makefile.in (SFILES): Add debug.c.
	(OBS): Add debug.o.
	* debug.c: New file.
	* debug.h: New file.
	* linux-aarch64-low.c (*): Update all debugging printfs to use
	debug_printf instead of fprintf.
	* linux-arm-low.c (*): Ditto.
	* linux-cris-low.c (*): Ditto.
	* linux-crisv32-low.c (*): Ditto.
	* linux-m32r-low.c (*): Ditto.
	* linux-sparc-low.c (*): Ditto.
	* linux-x86.c (*): Ditto.
	* linux-low.c (*): Ditto.
	(linux_wait_1): Add calls to debug_enter, debug_exit.
	(linux_wait): Remove redundant debugging printf.
	(stop_all_lwps): Add calls to debug_enter, debug_exit.
	(linux_resume, unstop_all_lwps): Ditto.
	* mem-break.c (*): Update all debugging printfs to use
	debug_printf instead of fprintf.
	* remote-utils.c (*): Ditto.
	* thread-db.c (*): Ditto.
	* server.c #include <ctype.h>, "gdb_vecs.h".
	(debug_threads): Moved to debug.c.
	(*): Update all debugging printfs to use debug_printf instead of
	fprintf.
	(start_inferior): Replace call to fflush with call to debug_flush.
	(monitor_show_help): Mention set debug-format.
	(parse_debug_format_options): New function.
	(handle_monitor_command): Handle "monitor set debug-format".
	(gdbserver_usage): Mention --debug-format.
	(main): Parse --debug-format.
	* server.h (debug_threads): Declaration moved to debug.h.
	#include "debug.h".
	* tracepoint.c (trace_debug_1) [!IN_PROCESS_AGENT]: Add version of
	trace_debug_1 that uses debug_printf.
	(tracepoint_look_up_symbols): Update all debugging printfs to use
	debug_printf instead of fprintf.

	doc/
	* gdb.texinfo (Server): Mention --debug-format=all|none|timestamp.
	(gdbserver man): Ditto.

	testsuite/
	* gdb.server/server-mon.exp: Add tests for "set debug-format".
2014-01-22 14:17:39 -08:00
Andreas Arnez 237b092b9f gdb/ChangeLog:
* syscalls/s390x-linux.xml: New file.
	* syscalls/s390-linux.xml: New file.
	* s390-linux-tdep.c (XML_SYSCALL_FILENAME_S390): New macro.
	(XML_SYSCALL_FILENAME_S390X): Likewise.
	(op_svc): New enum value for SVC opcode.
	(s390_sigtramp_frame_sniffer): Replace literal by 'op_svc'.
	(s390_linux_get_syscall_number): New function.
	(s390_gdbarch_init): Register '*get_syscall_number' and the
	syscall xml file name.
	* data-directory/Makefile.in (SYSCALLS_FILES): Add
	"s390-linux.xml" and "s390x-linux.xml".
	* NEWS: Announce new feature.

gdb/testsuite/ChangeLog:
	* gdb.base/catch-syscall.exp: Activate test on s390*-linux.
2014-01-22 18:54:43 +01:00
Andreas Arnez d674a7090f Fix regression on s390x with entry-values.exp.
The trace-specific test case 'entry-values' concludes fairly late in
the process that this platform doesn't support trace.  Before that,
there are some platform specifics that don't work on s390x.  The fix
addresses two aspects:

(1) Removal of an excess space character in the regex for the
    disassembly.  This is needed when there is a function alignment
    gap, because then the hex address is immediately followed by a
    colon, like in the first 'nopr' line below:

    (gdb) disassemble foo+50,+10
    Dump of assembler code from 0x32 to 0x3c:
       0x0000000000000032 <foo+50>: br      %r4
       0x0000000000000034:  nopr    %r7
       0x0000000000000036:  nopr    %r7
       0x0000000000000038 <bar+0>:  stmg    %r11,%r15,88(%r15)
    End of assembler dump.

(2) Handling for the s390-specific call instruction.

gdb/testsuite/ChangeLog:
	* gdb.trace/entry-values.exp: Remove excess space character from
	regex patterns.  Handle s390 call instruction.
2014-01-22 17:02:13 +01:00
Andreas Arnez 20fa339009 Re-introduce '_start' labels and add alignment in dw2-dir-file-name test case.
On ppc64-linux a function symbol does not point to code, but to the
function descriptor.  Thus the previous change for this test case
broke it:

      https://sourceware.org/ml/gdb-patches/2014-01/msg00275.html

This patch reverts to the original method, re-introducing '_start'
symbols.  In addition, it adds sufficient alignment before the label,
such that the label never points into an alignment gap.

gdb/testsuite/ChangeLog:
	* gdb.dwarf2/dw2-dir-file-name.c (FUNC): Insert alignment and
	define "*_start" label.  Make "name" static.
	* gdb.dwarf2/dw2-dir-file-name.exp: Replace references to
	${name} by references to ${name}_start.
2014-01-22 17:02:13 +01:00
Andreas Arnez 7846671423 Prevent appending "-g" after "-g3" to compile options in info-macros.exp.
When upstream gcc is given a command line with the "-g" option after
"-g3", it doesn't generate a ".debug_macro" section.  This is because
the last option wins, thus downgrading the debug level again.  Without
any macro debug information in the executable, info-macros.exp
obviously produces many failures.

Since the "-g" option is appended by DejaGnu's target_compile whenever
the "debug" option is set, the fix just removes that option.

gdb/testsuite/ChangeLog:
	* gdb.base/info-macros.exp: Remove "debug" from the compile
	options.
2014-01-22 17:02:13 +01:00
Baruch Siach 54bff65084 gdb: xtensa: fix on 64-bit hosts
On 64-bit hosts unsigned long is 64 bit.  Use uint32_t instead.

gdb/
2014-01-22  Baruch Siach  <baruch@tkos.co.il>

	* xtensa-tdep.h (xtensa_elf_greg_t): Change type to uint32_t.
2014-01-22 12:12:24 +00:00
Pedro Alves 14e361d7aa xtensa-config.c: missing defs.h include.
All .c files must start by including defs.h.

2014-01-22  Pedro Alves  <palves@redhat.com>

	* xtensa-config.c: Include defs.h.
2014-01-22 12:03:29 +00:00
Joel Brobecker 46bbb3edac Add ARI (ok) marker for __func__ reference in common-utils.h
The ARI script flagged the use of the __func__ variable, which
is normally not allowed (not defined in C90). However, this particular
use is OK, as the reference is only made when __STDC_VERSION__ >=
199901L.  So, add an "ARI:" comment to explicitly OK this use.

gdb/ChangeLog:

        * common/common-utils.h: Add "ARI:" comment beside __func__
        reference.
2014-01-22 09:03:31 +04:00
Joel Brobecker 3a80edfc74 Expand documentation of common-utils.h::FUNCTION_NAME
While looking at this macro, I noticed that it wasn't always necessarily
defined. That prompted me to search the current sources to make sure
that all uses were adequately protected, which they were. But to help
prevent future uses to be made unprotected, this patch expands the
current macro documentation a bit.

gdb/ChangeLog:

        * common/common-utils.h (FUNCTION_NAME): Expand the macro's
        documentation a bit.
2014-01-22 09:02:45 +04:00
Roland McGrath 4869db5e97 gdb: Support install-strip target
gdb/
	* configure.ac: Call AM_PROG_INSTALL_STRIP.
	* configure: Regenerate.
	* aclocal.m4: Regenerate.
	* Makefile.in (install_sh, INSTALL_STRIP_PROGRAM, STRIP):
	New substituted	variables.
	(install-strip): New target.
	(INSTALL_SCRIPT): New substituted variable.
	(FLAGS_TO_PASS): Add it.
	(install-only): Use $(INSTALL_SCRIPT) rather than
	$(INSTALL_PROGRAM) for gcore.
2014-01-21 11:01:04 -08:00
Tom Tromey 9ea4267d62 better packing for command struct
This moves all the bitfields in struct cmd_list_element to be closer
together.  This packs the structure somewhat better.  On a 64 bit
machine, this simple rearrangement saves around 50k at startup.

2014-01-20  Tom Tromey  <tromey@redhat.com>

	* cli/cli-decode.h (struct cmd_list_element): Move all bitfields
	together.
2014-01-20 09:10:52 -07:00
Tom Tromey 1f2bdf09c6 convert flags to bitfields
This changes various flags struct cmd_list_element into bitfields.  In
general I think bitfields are cleaner than flag words, at least in a
case like this where there is no need to pass the flags around
independently of the enclosing struct.

2014-01-20  Tom Tromey  <tromey@redhat.com>

	* cli/cli-decode.c (add_cmd, deprecate_cmd, add_alias_cmd)
	(add_setshow_cmd_full, delete_cmd, lookup_cmd_1)
	(deprecated_cmd_warning, complete_on_cmdlist): Update.
	* cli/cli-decode.h (CMD_DEPRECATED, DEPRECATED_WARN_USER)
	(MALLOCED_REPLACEMENT, DOC_ALLOCATED): Remove.
	(struct cmd_list_element) <flags>: Remove.
	<cmd_deprecated, deprecated_warn_user, malloced_replacement,
	doc_allocated>: New fields.
	<hook_in, allow_unknown, abbrev_flag, type, var_type>: Now
	bitfields.
	* maint.c (maintenance_do_deprecate): Update.
	* top.c (execute_command): Update.
2014-01-20 09:10:51 -07:00
Baruch Siach e671835b7a gdb: xtensa: fix linux ptrace includes
Currently, xtensa code using the Linux ptrace interface only include
sys/ptrace.h.  This file comes from the C library (glibc and uClibc,
at least), and includes a declaration of the ptrace() functions, along
with some cross architecture constants that are mostly copied from the
file located at include/uapi/linux/ptrace.h in recent Linux kernels.

For xtensa specific constants like PTRACE_GETXTREGS and
PTRACE_SETXTREGS the asm/ptrace.h include from the Linux kernel UAPI
is needed.  The code in gdbserver xtensa specific part doesn't call
ptrace() directly, so we can remove the unneeded sys/ptrace.h include.
The gdb xtensa specific code needs both headers, since it calls
ptrace().

gdb/
	* xtensa-linux-nat.c: Include asm/ptrace.h.

gdb/gdbserver/
	* linux-xtensa-low.c: Include asm/ptrace.h instead of
	sys/ptrace.h.
2014-01-20 11:43:44 +00:00
Iain Buclaw 50367cd2ad Move D demangling routines out of d-lang.c and into d-support.c, which
is intended to house other D language support functions.

gdb/ChangeLog:
2014-01-17  Iain Buclaw  <ibuclaw@gdcproject.org>

    * Makefile.in (SFILES): Add d-support.c.
    (COMMON_OBS): Add d-support.o.
    * d-lang.h (d_parse_symbol): Add comment, now defined in
    d-support.c.
    * d-lang.c (parse_call_convention)
    (parse_attributes, parse_function_types)
    (parse_function_args, parse_type, parse_identifier)
    (call_convention_p, d_parse_symbol): Move functions to ...
    * d-support.c: ... New file.
2014-01-18 18:11:24 +00:00
Iain Buclaw ec9f644ac9 Fix and update D demangling support in gdb to the current mangling ABI.
gdb/ChangeLog:
2014-01-17  Iain Buclaw  <ibuclaw@gdcproject.org>

    * d-lang.h (d_parse_symbol): Add declaration.
    * d-lang.c (extract_identifiers)
    (extract_type_info): Remove functions.
    (parse_call_convention, parse_attributes)
    (parse_function_types, parse_function_args)
    (parse_type, parse_identifier, call_convention_p)
    (d_parse_symbol): New functions.
    (d_demangle): Use d_parse_symbol to demangle D symbols.

gdb/testsuite/ChangeLog:
2014-01-17  Iain Buclaw  <ibuclaw@gdcproject.org>

* gdb.dlang/demangle.exp: New file.
2014-01-18 18:11:06 +00:00
Iain Buclaw 94b1b47ee1 Define all basic data types of D and add them to the primitive type
language vector.

gdb/ChangeLog:
2014-01-17  Iain Buclaw  <ibuclaw@gdcproject.org>

    * d-lang.h (struct builtin_d_type): New data type.
    (builtin_d_type): Add declaration.
    * d-lang.c (d_language_arch_info, build_d_types)
    (builtin_d_type): New functions.
    (enum d_primitive_types): New data type.
    (d_language_defn): Change c_language_arch_info to
    d_language_arch_info.
    (d_type_data): New static variable.
    (_initialize_d_language): Initialize d_type_data.

gdb/testsuite/ChangeLog:
2014-01-17  Iain Buclaw  <ibuclaw@gdcproject.org>

    * gdb.dlang/primitive-types.exp: New file.
2014-01-18 18:10:47 +00:00
Iain Buclaw 6377854769 Add d_main_name to set the logical entry point for D programs.
gdb/ChangeLog:
2014-01-17  Iain Buclaw  <ibuclaw@gdcproject.org>

    * d-lang.h (d_main_name): Add declaration.
    * d-lang.c (d_main_name): New function.
    * symtab.c (find_main_name): Add call to d_main_name.
2014-01-18 18:10:32 +00:00
Iain Buclaw 3271ba660a Update d_language_defn to reflect that D does not have any style of
macro expansion in its language.

gdb/ChangeLog:
2014-01-17  Iain Buclaw  <ibuclaw@gdcproject.org>

    * d-lang.c (d_language_defn): Change macro_expansion_c to
    macro_expansion_no.
2014-01-18 18:09:48 +00:00