Commit Graph

81150 Commits

Author SHA1 Message Date
Joel Brobecker d36430db79 Fix handling of typedefs to types having a data_location attribute.
Consider an array described in the debugging information as being
a typedef of an array type for which there is a DW_AT_data_location
attribute. Trying to print the value of that array currently yields
incorrect element values. For instance:

    (gdb) print foo.three_tdef
    $1 = (6293760, 0, 6293772)

The problem occurs because we check for the data_location attribute
only on the typedef type, whereas we should be checking for the
typedef's target type.  As a result, GDB erroneously thinks that
there is no data_location, and therefore starts reading the array's
content from the address of the descriptor instead of the data_location
address.

gdb/ChangeLog:

        * value.c (value_from_contents_and_address): Strip resolved_type's
        typedef layers before checking its TYPE_DATA_LOCATION.

gdb/testsuite/ChangeLog:

        * gdb.dwarf2/data-loc.exp: Add additional tests exercising
        the handling of variables declared as a typedef to an array
        which a DW_AT_data_location attribute.
2014-08-20 15:34:19 +02:00
Pedro Alves 000339af7b value.c (value_contents_bits_eq): Initialize l,h for gcc -Wall.
2014-08-20  Pedro Alves  <palves@redhat.com>

	gdb/
	* value.c (value_contents_bits_eq): Initialize l,h for gcc -Wall.
2014-08-20 11:29:15 +01:00
Yao Qi 5f52445bfb Adjust comments with example in it
We would like to wrap examples, output or code snippet in comments with
blank lines, and move */ to a new line if the comment is ended with the
example.

gdb:

2014-08-20  Yao Qi  <yao@codesourcery.com>

	* amd64-tdep.c (amd64_classify): Add a blank line after the
	example.  Move "*/" to a new line.
	* arm-tdep.c (arm_vfp_cprc_sub_candidate): Likewise.
	* arm-wince-tdep.c (arm_pe_skip_trampoline_code): Likewise.
	* dwarf2read.c (psymtab_include_file_name): Likewise.
2014-08-20 17:40:37 +08:00
Nick Clifton 985743c7fb Add copyright notice to linker script files. 2014-08-20 10:34:58 +01:00
Alan Modra 37186264f3 Fix typo in f7f2534e
* Makefile.am: Typo fix.
	* Makefile.in: Regenerate.
	* po/POTFILES.in: Regenerate.
2014-08-20 10:01:53 +09:30
Alan Modra 4627fc13ce daily update 2014-08-20 09:31:14 +09:30
Pedro Alves 9a0dc9e369 Handle partially optimized out values similarly to unavailable values
This fixes PR symtab/14604, PR symtab/14605, and Jan's test at
https://sourceware.org/ml/gdb-patches/2014-07/msg00158.html, in a tree
with bddbbed reverted:

 2014-07-22  Pedro Alves  <palves@redhat.com>

 	* value.c (allocate_optimized_out_value): Don't mark value as
 	non-lazy.

The PRs are about variables described by the DWARF as being split over
multiple registers using DWARF piece information, but some of those
registers being marked as optimised out (not saved) by a later frame.
GDB currently incorrectly mishandles these partially-optimized-out
values.

Even though we can usually tell from the debug info whether a local or
global is optimized out, handling the case of a local living in a
register that was not saved in a frame requires fetching the variable.
GDB also needs to fetch a value to tell whether parts of it are
"<unavailable>".  Given this, it's not worth it to try to avoid
fetching lazy optimized-out values based on debug info alone.

So this patch makes GDB track which chunks of a value's contents are
optimized out like it tracks <unavailable> contents.  That is, it
makes value->optimized_out be a bit range vector instead of a boolean,
and removes the struct lval_funcs check_validity and check_any_valid
hooks.

Unlike Andrew's series which this is based on (at
https://sourceware.org/ml/gdb-patches/2013-08/msg00300.html, note some
pieces have gone in since), this doesn't merge optimized out and
unavailable contents validity/availability behind a single interface,
nor does it merge the bit range vectors themselves (at least yet).
While it may be desirable to have a single entry point that returns
existence of contents irrespective of what may make them
invalid/unavailable, several places want to treat optimized out /
unavailable / etc. differently, so each spot that potentially could
use it will need to be careful considered on case-by-case basis, and
best done as a separate change.

This fixes Jan's test, because value_available_contents_eq wasn't
considering optimized out value contents.  It does now, and because of
that it's been renamed to value_contents_eq.

A new intro comment is added to value.h describing "<optimized out>",
"<not saved>" and "<unavailable>" values.

gdb/
	PR symtab/14604
	PR symtab/14605
	* ada-lang.c (coerce_unspec_val_to_type): Use
	value_contents_copy_raw.
	* ada-valprint.c (val_print_packed_array_elements): Adjust.
	* c-valprint.c (c_val_print): Use value_bits_any_optimized_out.
	* cp-valprint.c (cp_print_value_fields): Let the common printing
	code handle optimized out values.
	(cp_print_value_fields_rtti): Use value_bits_any_optimized_out.
	* d-valprint.c (dynamic_array_type): Use
	value_bits_any_optimized_out.
	* dwarf2loc.c (entry_data_value_funcs): Remove check_validity and
	check_any_valid fields.
	(check_pieced_value_bits): Delete and inline ...
	(check_pieced_synthetic_pointer): ... here.
	(check_pieced_value_validity): Delete.
	(check_pieced_value_invalid): Delete.
	(pieced_value_funcs): Remove check_validity and check_any_valid
	fields.
	(read_pieced_value): Use mark_value_bits_optimized_out.
	(write_pieced_value): Switch to use
	mark_value_bytes_optimized_out.
	(dwarf2_evaluate_loc_desc_full): Copy the value contents instead
	of assuming the whole value is optimized out.
	* findvar.c (read_frame_register_value): Remove special handling
	of optimized out registers.
	(value_from_register): Use mark_value_bytes_optimized_out.
	* frame-unwind.c (frame_unwind_got_optimized): Use
	mark_value_bytes_optimized_out.
	* jv-valprint.c (java_value_print): Adjust.
	(java_print_value_fields): Let the common printing code handle
	optimized out values.
	* mips-tdep.c (mips_print_register): Remove special handling of
	optimized out registers.
	* opencl-lang.c (lval_func_check_validity): Delete.
	(lval_func_check_any_valid): Delete.
	(opencl_value_funcs): Remove check_validity and check_any_valid
	fields.
	* p-valprint.c (pascal_object_print_value_fields): Let the common
	printing code handle optimized out values.
	* stack.c (read_frame_arg): Remove special handling of optimized
	out values.  Fetch both VAL and ENTRYVAL before comparing
	contents.  Adjust to value_available_contents_eq rename.
	* valprint.c (valprint_check_validity)
	(val_print_scalar_formatted): Use value_bits_any_optimized_out.
	(val_print_array_elements): Adjust.
	* value.c (struct value) <optimized_out>: Now a VEC(range_s).
	(value_bits_any_optimized_out): New function.
	(value_entirely_covered_by_range_vector): New function, factored
	out from value_entirely_unavailable.
	(value_entirely_unavailable): Reimplement.
	(value_entirely_optimized_out): New function.
	(insert_into_bit_range_vector): New function, factored out from
	mark_value_bits_unavailable.
	(mark_value_bits_unavailable): Reimplement.
	(struct ranges_and_idx): New struct.
	(find_first_range_overlap_and_match): New function, factored out
	from value_available_contents_bits_eq.
	(value_available_contents_bits_eq): Rename to ...
	(value_contents_bits_eq): ... this.  Check both unavailable
	contents and optimized out contents.
	(value_available_contents_eq): Rename to ...
	(value_contents_eq): ... this.
	(allocate_value_lazy): Remove reference to the old optimized_out
	boolean.
	(allocate_optimized_out_value): Use
	mark_value_bytes_optimized_out.
	(require_not_optimized_out): Adjust to check whether the
	optimized_out vec is empty.
	(ranges_copy_adjusted): New function, factored out from
	value_contents_copy_raw.
	(value_contents_copy_raw): Also copy the optimized out ranges.
	Assert the destination ranges aren't optimized out.
	(value_contents_copy): Update comment, remove call to
	require_not_optimized_out.
	(value_contents_equal): Adjust to check whether the optimized_out
	vec is empty.
	(set_value_optimized_out, value_optimized_out_const): Delete.
	(mark_value_bytes_optimized_out, mark_value_bits_optimized_out):
	New functions.
	(value_entirely_optimized_out, value_bits_valid): Delete.
	(value_copy): Take a VEC copy of the 'optimized_out' field.
	(value_primitive_field): Remove special handling of optimized out.
	(value_fetch_lazy): Assert that lazy values have no unavailable
	regions.  Use value_bits_any_optimized_out.  Remove some special
	handling for optimized out values.
	* value.h: Add intro comment about <optimized out> and
	<unavailable>.
	(struct lval_funcs): Remove check_validity and check_any_valid
	fields.
	(set_value_optimized_out, value_optimized_out_const): Remove.
	(mark_value_bytes_optimized_out, mark_value_bits_optimized_out):
	New declarations.
	(value_bits_any_optimized_out): New declaration.
	(value_bits_valid): Delete declaration.
	(value_available_contents_eq): Rename to ...
	(value_contents_eq): ... this, and extend comments.

gdb/testsuite/
	PR symtab/14604
	PR symtab/14605
	* gdb.dwarf2/dw2-op-out-param.exp: Remove kfail branches and use
	gdb_test.
2014-08-20 00:07:40 +01:00
Jan Kratochvil 6694c4110a Fix -fsanitize=address on unreadable inferior strings
echo 'void f(char *s){}main(){f((char *)1);}'|gcc -g -x c -;../gdb ./a.out -ex 'b f' -ex r
====ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020000aaccf at pc 0x96eea7 bp 0x7fff75bdbc90 sp 0x7fff75bdbc80
READ of size 1 at 0x6020000aaccf thread T0
    #0 0x96eea6 in extract_unsigned_integer .../gdb/findvar.c:108
    #1 0x9df02b in val_print_string .../gdb/valprint.c:2513
[...]
0x6020000aaccf is located 1 bytes to the left of 8-byte region [0x6020000aacd0,0x6020000aacd8)
allocated by thread T0 here:
    #0 0x7f45fad26b97 in malloc (/lib64/libasan.so.1+0x57b97)
    #1 0xdb3409 in xmalloc common/common-utils.c:45
    #2 0x9d8cf9 in read_string .../gdb/valprint.c:1845
    #3 0x9defca in val_print_string .../gdb/valprint.c:2502
[..]
====ABORTING

gdb/
2014-08-18  Jan Kratochvil  <jan.kratochvil@redhat.com>

	Fix -fsanitize=address on unreadable inferior strings.
	* valprint.c (val_print_string): Fix access before BUFFER.
2014-08-19 22:55:10 +02:00
Pedro Alves 0718a8da7b Remove stale comment
This comment is no longer true for watchpoints since commit 31e77af2
(PR breakpoints/7143 - Watchpoint does not trigger when first set).

gdb/testsuite/

	* gdb.base/watchpoint-hw-hit-once.c (main): Update comment.
2014-08-19 18:18:31 +01:00
Simon Marchi 89a1c21a1d Convert target_structs vector to VEC
I thought that this home made implementation of a vector could be
replaced by the more standard VEC. The implementation seems to predate
the introduction of vec.h, so that would explain why it exists.

Ran make check before and after, no new failures.

gdb/ChangeLog:

2014-08-19  Simon Marchi  <simon.marchi@ericsson.com>

	* target.c (target_struct_size): Remove.
	(target_struct_allocsize): Remove.
	(DEFAULT_ALLOCSIZE): Remove.
	(target_ops_p): New typedef.
	(DEF_VEC_P (target_ops_p)): New vector type.
	(target_structs): Change type to VEC (target_ops_p).
	(add_target_with_completer): Replace "push" code by VEC_safe_push.
	(find_default_run_target): Rewrite for loop following changes to
	target_structs.
2014-08-19 11:36:31 -04:00
Nick Clifton f7f2534e71 This patch adds support for FreeBSD ARM in gas.
Before FreeBSD-8 there was/is no arm support from the OS side.
FreeBSD-9.x added ARM support but only for the OABI.
From FreeBSD-10 upwards there is EABI support.

    * Makefile.am: Add FreeBSD ARM support.
    * Mafefile.in: Regenerate.
    * configure.tgt: Add FreeBSD ARM support.
    * config/te-armfbsdeabi.h: New file.
    * config/te-armfbsdvfp.h: Likewise.
2014-08-19 15:51:43 +01:00
Andreas Arnez 9ace48f3d7 This patch set mainly aims at improving the S/390 disassembler's
readability and also fixes some minor issues.

  S/390: Split disassembler routine into smaller functions
  S/390: Fix disassembler's treatment of signed/unsigned operands
  S/390: Fix off-by-one error in disassembler initialization
  S/390: Simplify opcode search loop in disassembler
  S/390: Drop function pointer dereferences in disassembler
  S/390: Various minor simplifications in disassembler
2014-08-19 15:42:13 +01:00
Joel Brobecker cb417230fb value_from_pointer: remove call to resolve_dynamic_type
The given type is expected to always be a TYPE_CODE_PTR, for which
resolve_dynamic_type does nothing.  So this patch removes this call.

gdb/ChangeLog:

        * value.c (value_from_pointer): Remove use of resolve_dynamic_type.
        Adjust code accordingly.  Adjust function description comment.
2014-08-19 15:43:19 +02:00
Yao Qi 13b448cdf7 Set breakpoint on the right line
In gdb.base/watchpoint-hw-hit-once.exp, test scans source and set
breakpoint on the line having "break-at-exit",

  gdb_breakpoint [gdb_get_line_number "break-at-exit"]

However, in watchpoint-hw-hit-once.c, there are two lines having
this key word:

  dummy = 1;	/* Stub to catch break-at-exit after WATCHEE has been hit.  */
  dummy = 2;	/* break-at-exit */

so the test sets breakpoint on the first one, while I think it is
expected to set breakpoint on the second one, as far as I can tell
from the comments in watchpoint-hw-hit-once.c:

  /* Stub lines are present as no breakpoints/watchpoint gets hit if current PC
     already stays on the line PC while entering "step"/"continue".  */

This patch is to change the source matching pattern so that test
can correctly set breakpoint on the right line.  This patch fixes
a fail we found on arm-none-eabi target.

(gdb) PASS: gdb.base/watchpoint-hw-hit-once.exp: continue
continue^M
Continuing.^M
^M
*** EXIT code 0^M
[Inferior 1 (Remote target) exited normally]^M
(gdb) FAIL: gdb.base/watchpoint-hw-hit-once.exp: continue to break-at-exit (the program exited)

Run it again on x86_64-linux, no result changes.

gdb/testsuite:

2014-08-19  Yao Qi  <yao@codesourcery.com>

	* gdb.base/watchpoint-hw-hit-once.exp: Set breakpoint on the
	right line.
2014-08-19 21:31:36 +08:00
Yao Qi 817e0957a5 Support _Complex in hard-VFP abi
Hi,
When we pass "-mfloat-abi=hard" flag in the GDB testing, we see the
following fails,

FAIL: gdb.base/callfuncs.exp: p t_float_complex_values(fc1, fc2)
FAIL: gdb.base/callfuncs.exp: p t_float_complex_many_args(fc1, fc2, fc3, fc4, fc1, fc2, fc3, fc4, fc1, fc2, fc3, fc4, fc1, fc2, fc3, fc4)
FAIL: gdb.base/callfuncs.exp: p t_double_complex_values(dc1, dc2)
FAIL: gdb.base/callfuncs.exp: p t_double_complex_many_args(dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4)
FAIL: gdb.base/callfuncs.exp: p t_long_double_complex_values(ldc1, ldc2)
FAIL: gdb.base/callfuncs.exp: p t_long_double_complex_many_args(ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4)
FAIL: gdb.base/callfuncs.exp: call inferior func with struct - returns float _Complex
FAIL: gdb.base/callfuncs.exp: call inferior func with struct - returns double _Complex

The hard-VFP ABI was supported by GDB overal, done by this patch
https://sourceware.org/ml/gdb-patches/2009-07/msg00686.html but
"vectors and complex types are not currently supported", mentioned in
the patch.  As a result, these tests fail.

This patch is to support _Complex types in hard-VFP abi.  As specified
in "7.1.1, Procedure Call Standard for the ARM Arch", the layout of
_Complex types is a struct, which is identical to the layout on amd64,
so I copy Mark's comments to amd64 support.

Regression tested on arm-none-eabi target.  OK to apply?

gdb:

2014-08-19  Yao Qi  <yao@codesourcery.com>

	* arm-tdep.c (arm_vfp_cprc_sub_candidate): Handle _Complex
	types.
2014-08-19 21:08:38 +08:00
Alan Modra 2974be626b Fix --diable-shared --enable-plugins build breakage
Directories that don't use libtool need to add -ldl (on most *nix
hosts) to provide dlopen for libbfd.

config/
	* plugins.m4 (AC_PLUGINS): If plugins are enabled, add -ldl to
	LIBS via AC_SEARCH_LIBS.
gdb/
	* acinclude.m4 (GDB_AC_CHECK_BFD): Don't add -ldl.
	* config.in: Regenerate.
sim/ppc/
	* configure.ac: Invoke AC_PLUGINS.
	* config.in: Regenerate.

and regen lots of configure files.
2014-08-19 21:59:56 +09:30
Nick Clifton 180eb0634c Replace static variables in the MSP430 simulator with fields in the cpu state structure.
* msp430-sim.c: Move static hardware multiply support variables
	from here...
	* msp430-sim.h (msp430_cpu_state): ... into here ...
	* msp430-sim.c (get_op, put_op): ... and update references to use
	the msp430_cpu_state structure.
2014-08-19 11:34:14 +01:00
Gary Benson 34abf635b3 Introduce common-debug.h
This introduces common-debug.h.  This holds the functions debug_printf
and debug_vprintf, two functions that the common code can use to print
debugging messages.  Clients of the common code are expected to
implement debug_vprintf; a debug_vprintf function is written from
scratch for GDB, and gdbserver's existing debug_printf is repurposed
as debug_vprintf.

common/agent.c is changed to use debug_vprintf rather than
defining the macro DEBUG_AGENT depending on GDBSERVER.

nat/i386-dregs.c is changed to use the externally-implemented
debug_printf, rather than defining it itself.

gdb/ChangeLog:

	* common/common-debug.h: New file.
	* common/common-debug.c: Likewise.
	* debug.c: Likewise.
	* Makefile.in (SFILES): Add common/common-debug.c.
	(HFILES_NO_SRCDIR): Add common/common-debug.h.
	(COMMON_OBS): Add common-debug.o and debug.o.
	(common-debug.o): New rule.
	* common/common-defs.h: Include common-debug.h.
	* common/agent.c (debug_agent_printf): New function.
	(DEBUG_AGENT): Redefine.
	* nat/i386-dregs.c (debug_printf): Undefine.

gdb/gdbserver/ChangeLog:

	* Makefile.in (SFILES): Add common/common-debug.c.
	(OBS): Add common-debug.o.
	(common-debug.o): New rule.
	* debug.h (debug_printf): Don't declare.
	* debug.c (debug_printf): Renamed and rewritten as...
	(debug_vprintf): New function.
2014-08-19 10:07:20 +01:00
Gary Benson f6e94d78b2 Move print-utils.h to common-defs.h
This commit moves the inclusion of print-utils.h to common-defs.h
and removes all other inclusions.

gdb/ChangeLog:

	* common/common-defs.h: Include print-utils.h.
	* utils.h: Do not include print-utils.h.

gdb/gdbserver/ChangeLog:

	* utils.h: Do not include print-utils.h.
2014-08-19 10:07:19 +01:00
Gary Benson 9239eeabe3 Introduce common-types.h
This introduces common-types.h.  This file defines various standard
types used by gdb and gdbserver.

Currently these types are conditionally defined based on GDBSERVER.
The long term goal is to remove all such tests; however, this is
difficult as currently gdb uses definitions from BFD.  In the meantime
this is still a step in the right direction.

gdb/ChangeLog:

	* common/common-types.h: New file.
	* Makefile.in (HFILES_NO_SRCDIR): Add common/common-types.h.
	* common/common-defs.h: Include common-types.h.
	* defs.h (gdb_byte, CORE_ADDR, CORE_ADDR_MAX, LONGEST)
	(ULONGEST): Remove.

gdb/gdbserver/ChangeLog:

	* server.h: Add static assertion.
	(gdb_byte, CORE_ADDR, LONGEST, ULONGEST): Remove.
2014-08-19 10:07:19 +01:00
Gary Benson ef87c8bbe7 Introduce common/errors.h
This introduces common/errors.h.  This holds some error- and warning-
related declarations that can be used by the code in common, nat and
target.  Some of the declared functions must be provided by the client
as documented by the header file comments.

gdb/ChangeLog:

	* common/errors.h: New file.
	* common/errors.c: Likewise.
	* Makefile.in (SFILES): Add common/errors.c.
	(HFILES_NO_SRCDIR): Add common/errors.h.
	(COMMON_OBS): Add errors.o.
	(errors.o): New rule.
	* common/common-defs.h: Include errors.h.
	* utils.h (perror_with_name, error, verror, warning, vwarning):
	Don't declare.
	* common/common-utils.h: (malloc_failure, internal_error):
	Likewise.

gdb/gdbserver/ChangeLog:

	* Makefile.in (SFILES): Add common/errors.c.
	(OBS): Add errors.o.
	(IPA_OBS): Add errors-ipa.o.
	(errors.o): New rule.
	(errors-ipa.o): Likewise.
	* utils.h (perror_with_name, error, warning): Don't declare.
	* utils.c (warning): Renamed and rewritten as...
	(vwarning): New function.
	(error): Renamed and rewritten as...
	(verror): New function.
	(internal_error): Renamed and rewritten as...
	(internal_verror): New function.
2014-08-19 10:07:18 +01:00
Gary Benson 196a707b15 Ensure internal_vproblem always prints the message
While working on internal_vproblem I noticed that the error/warning
message is suppressed if problem->should_quit is internal_problem_yes
or internal_problem_no.  This behaviour seems wrong.  This commit
modifies internal_vproblem to emit the message regardless of the
user's settings.

gdb/
2014-08-19  Gary Benson  <gbenson@redhat.com>

	* utils.c (internal_vproblem): Always print the message.
2014-08-19 09:44:16 +01:00
Alan Modra 774891604b daily update 2014-08-19 09:31:12 +09:30
David Blaikie 1cbf50779e boards/fission.exp: Explicitly pass -ggnu-pubnames for clang.
* boards/fission.exp: Explicitly pass -ggnu-pubnames for clang.
2014-08-18 12:07:49 -07:00
Joel Brobecker bf0fae198a gdb.dwarf2/data-loc.exp: Remove second DW_AT_upper bound in array range.
The testcase generates an assembly file where a second DW_AT_upper_bound
attribute gets generated in the array range.  This was definitely
unintentional, and I only noticed this after pushing the testcase,
when dumping one more time the DWARF data using readelf.

This patch fixes it.

gdb/testsuite/ChangeLog:

        * gdb.dwarf2/data-loc.exp: Remove second DW_AT_upper bound
        attribute in array range.
2014-08-18 19:47:12 +02:00
Doug Evans ded4fc8f9c ada-typeprint.c (print_range): Initialize lo,hi for gcc -Wall.
* ada-typeprint.c (print_range): Initialize lo,hi for gcc -Wall.
2014-08-18 10:04:18 -07:00
Nick Clifton 3ce3a066e1 This fixes the processing of BFD_RELOC_RL78_DIFF fixups when the size is less
than 4.  This affects DWARF debug info generation in particular.

	* config/tc-rl78.c (md_apply_fix): Correct handling of small sized
	RELOC_RL78_DIFF fixups.
2014-08-18 17:34:03 +01:00
Joel Brobecker 3c8c5dcc98 DW_AT_data_location and DW_OP_push_object_address testcase.
This testcase allows us to test the proper processing of both
DW_AT_data_location and DW_OP_push_object_address using a hand-crafted
testcase duplicating how we expect the Ada compiler to represent
unbounded arrays.

gdb/testsuite/ChangeLog:

        * gdb.dwarf2/data-loc.c, gdb.dwarf2/data-loc.exp: New files.
2014-08-18 18:14:14 +02:00
Joel Brobecker 950c97d860 [Ada] "ptype" of array where bound value uses DW_OP_push_object_address
Consider an Ada array type where the DWARF debugging info for
at least one of the bounds involves an expression containing
a DW_OP_push_object_address operation. Trying to "ptype" that
type currently yields:

    (gdb) ptype foo.array_type
    type = array (Location address is not set.

This patch improves ada-typeprint by adding handling of the situation
where an array range type has dynamic bounds.  In that case, it prints
the array bounds using Ada's typical syntax for unbounded ranges "<>":

    (gdb) ptype array_type
    type = array (<>) of integer

gdb/ChangeLog:

        * ada-typeprint.c (type_is_full_subrange_of_target_type):
        Return 0 if TYPE is dynamic.
        (print_range): Add handling of dynamic ranges.
2014-08-18 18:13:29 +02:00
Joel Brobecker 3cdcd0ce16 Add support for DW_AT_data_location.
gdb/ChangeLog:

        * gdbtypes.h (struct main_type): Add field "data_location".
        (TYPE_DATA_LOCATION, TYPE_DATA_LOCATION_BATON)
        (TYPE_DATA_LOCATION_ADDR, TYPE_DATA_LOCATION_KIND): New macros.
        * gdbtypes.c (is_dynamic_type): Return 1 if the type has
        a dynamic data location.
        (resolve_dynamic_type): Add DW_AT_data_location handling.
        (copy_recursive, copy_type): Copy the data_location information
        when present.
        * dwarf2read.c (set_die_type): Add DW_AT_data_location handling.
        * value.c (value_from_contents_and_address): Add
        DW_AT_data_location handling.
2014-08-18 18:12:53 +02:00
Joel Brobecker 08412b0722 Add support for DW_OP_push_object_address.
gdb/ChangeLog:

        * dwarf2expr.h (struct dwarf_expr_context_funcs): Uncomment
        field "get_object_address".
        * dwarf2expr.c (execute_stack_op): Add handling for
        DW_OP_push_object_address.
        * dwarf2loc.h (dwarf2_evaluate_property): Add "address" field.
        * dwarf2loc.c (struct dwarf_expr_baton): Add field "obj_address".
        (dwarf_expr_push_dwarf_reg_entry_value): Set baton_local.obj_address.
        (dwarf_expr_get_obj_addr): New function.
        (dwarf_expr_ctx_funcs): Add get_object_address field.
        (dwarf2_evaluate_loc_desc_full): Set baton.obj_address.
        (dwarf2_locexpr_baton_eval): Add parameter "addr".  Use it.
        (dwarf2_evaluate_property): Add parameter "address".  Use it.
        (needs_get_obj_addr): New function.
        (needs_frame_ctx_funcs): Add get_object_address field.
        (dwarf2_compile_expr_to_ax): Add DW_OP_push_object_address handling.
        * gdbtypes.c (resolve_dynamic_range): Add "addr" field.  Use it.
        (resolve_dynamic_array): Likewise.
2014-08-18 18:11:28 +02:00
Joel Brobecker 84754697d2 ada_evaluate_subexp<OP_VAR_VALUE>: Avoid static fixing when possible.
Now that the OP_VAR_VALUE section of this function has been reorganized
a bit, we can fall-back on standard evaluation when static fixing is
not required. This patch does that, but being exclusive about when
static fixing has to be used, rather than doing it all the time when
noside is EVAL_AVOID_SIDE_EFFECTS.

This will pave the way for later when we want to evaluate entities
that have no GNAT encodings related to them but dynamic properties
instead. In that case, we expect the standard evaluation to resolve
those dynamic properties for us, even in no-side-effect mode.

gdb/ChangeLog:

        * ada-lang.c (ada_evaluate_subexp) <OP_VAR_VALUE>:
        When noside is EVAL_AVOID_SIDE_EFFECTS, only return a statically
        fixed value for records and unions for which some GNAT encodings
        are present.
2014-08-18 17:10:39 +02:00
Joel Brobecker da5c522f5b avoid "if ... else if ... else" logic in ada-lang.c::ada_evaluate_subexp
The OP_VAR_VALUE branch in ada_evaluate_subexp is written with
multiple "if ... else if ... else if ... else ..." block. But
in practice, these blocks  all either goto out of that block of
code, or return.

This patch rewrites this code slightly by replacing the "else if"-s
by simple "if"s. This should better reflect the ideal processing
where we try to do a standard eval whenever possible, and only
do something else when the standard eval does not work. On a pratical
level, this patch makes it easier to fall through to the default
processing when none of the special situations are detected, thus
making it easier to add more handlers of those special situations;
or to remove them as they no longer become necessary!

gdb/ChangeLog:

        * ada-lang.c (ada_evaluate_subexp) <OP_VAR_VALUE>: Slight code
        rewrite to avoid "else if" and "else" constructs.  Should be
        a no-op in practice.
2014-08-18 17:09:33 +02:00
Joel Brobecker 0d72a7c318 Fix indentation level in ada-lang.c::ada_evaluate_subexp.
I just happen to notice that a lexical block was missing one
indentation level.

gdb/ChangeLog:

        * ada-lang.c (ada_evaluate_subexp) <OP_VAR_VALUE>: Fix identation
        of lexical block.
2014-08-18 17:08:55 +02:00
Alan Modra cb8e01c6bb LTO plugin with older gcc
* ld-plugin/lto.exp: Use gcc -print-file-name to find lto plugin.
2014-08-18 21:01:26 +09:30
Alan Modra 1009ef284f PowerPC fix for ifunc broken by d1eca1e4
This probably could be fixed by making changes in relocate_section for
ifunc, but it's simpler to disable the optimisation for ifunc.

	* elf64-ppc.c (ppc64_elf_adjust_dynamic_symbol): Don't attempt to
	use dynrelocs for ifunc.
	* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Similarly.
2014-08-18 21:00:46 +09:30
Alan Modra 1240be6b7d PR 17287, DT_NEEDED of unneeded libraries affects --as-needed
PR 17287
bfd/
	* elflink.c (on_needed_list): Only consider libraries that have
	been loaded.
ld/
	* ld.texinfo (--as-needed): Clarify that references from libraries
	must be from needed libraries.
ld/testsuite/
	* ld-plugin/needed3.c: New file.
	* ld-elf/shared.exp: Add needed3 test.
2014-08-18 18:45:01 +09:30
Alan Modra 759388538d Return error status from bfd_elf_discard_info.
bfd/
	* elflink.c (bfd_elf_discard_info): Return int error status.
	* stabs.c (_bfd_discard_section_stabs): Comment typo fix.
	* bfd-in.h (bfd_elf_discard_info): Updata prototype.
	* bfd-in2.h: Regenerate.
ld/
	* emultempl/aarch64elf.em (gld${EMULATION_NAME}_after_allocation):
	Handle error status from bfd_elf_discard_info.
	* emultempl/armelf.em: Likewise.
	* emultempl/elf32.em: Likewise.
	* emultempl/hppaelf.em: Likewise.
	* emultempl/metagelf.em: Likewise.
	* emultempl/nios2elf.em: Likewise.
	* emultempl/ppc64elf.em: Likewise.
	* emultempl/tic6xdsbt.em: Likewise.
	* emultempl/vms.em: Likewise.
2014-08-18 09:33:35 +09:30
Alan Modra 1e53931944 Cast result of TC_PARSE_CONS_EXPRESSION
* read.c (parse_mri_cons): Warning fix.
2014-08-18 09:32:44 +09:30
Alan Modra 87ea0aeaa3 daily update 2014-08-18 09:30:46 +09:30
Alan Modra d2db64e914 daily update 2014-08-17 09:30:44 +09:30
Siva Chandra e66d444669 Add new argument NOSIDE to find_overload_match.
This is a fix for PR c++/17132.
If this new argument is set to EVAL_AVOID_SIDE_EFFECTS, then the object's
memory will not be read while picking the best overload match.

gdb/

	* eval.c: Update all calls to find_overload_match.
	* valarith.c: Likewise.
	(value_user_defined_cpp_op, value_user_defined_op): New
	argument NOSIDE.  Update all callers.
	* valops.c (find_overload_match): New argument NOSIDE.
	* value.h (find_overload_match): Update signature.

gdb/testsuite

	* gdb.cp/pr17132.cc: New file.
	* gdb.cp/pr17132.exp: New file.
2014-08-15 18:28:59 -07:00
Siva Chandra 940df40812 Fix xmethod Python so that it works with Python3.
gdb/

	* python/lib/gdb/command/xmethods.py (set_xm_status1): Use the
	'items'	methods instead of 'iteritems' method on dictionaries.

gdb/testsuite/

	* gdb.python/py-xmethods.py (A_getarrayind)
	(E_method_char_worker.__call__, E_method_int_worker.__call__):
	Use 'print' with function call syntax.
	(E_method_matcher.match): Fix tab vs space indentation mixup.
2014-08-15 18:04:47 -07:00
Alan Modra a0d09f12db daily update 2014-08-16 09:31:03 +09:30
Doug Evans 699ca60ad9 (dwarf_decode_lines_1): Move definition of adj_opcode closer to use.
* dwarf2read.c (dwarf_decode_lines_1): Move definition of adj_opcode
	closer to use.
2014-08-15 16:22:51 -07:00
Doug Evans 37780ee59e dwarf2read.c (dwarf_decode_lines_1): Add comment.
* dwarf2read.c (dwarf_decode_lines_1): Add comment.
2014-08-15 16:05:47 -07:00
Roland McGrath faa743bb1b Regenerate sim configury. 2014-08-15 15:51:50 -07:00
Doug Evans 0ad93d4feb (dwarf_decode_lines_1): Delete local "column", unused.
* dwarf2read.c (dwarf_decode_lines_1): Delete local "column", unused.
2014-08-15 15:38:56 -07:00
Doug Evans 20d8c3722e (dwarf_decode_lines_1): Delete local basic_block, unused.
* dwarf2read.c (dwarf_decode_lines_1): Delete local basic_block,
	unused.
2014-08-15 15:24:35 -07:00
Eli Zaretskii cb039ba453 Avoid compiler warnings about incomplete parameter types.
gdb/ChangeLog:

	* dcache.h: Include target.h, to avoid compile time warnings.
2014-08-15 17:04:27 +03:00