Alan Modra [Fri, 12 Dec 2014 05:32:34 +0000 (16:02 +1030)]
PowerPC register numbers in DWARF
This makes gas .cfi output to .debug_frame match register numbering
emitted by gcc. md_reg_eh_frame_to_debug_frame follows the ABI,
targets not using it, notably Linux, don't.
* config/tc-ppc.h (md_reg_eh_frame_to_debug_frame): Match current
gcc behaviour.
* config/te-aix.h: New file.
* configure.tgt: Use em=aix for powerpc-aix.
Alan Modra [Fri, 12 Dec 2014 13:09:14 +0000 (23:39 +1030)]
Set bfd_error in _bfd_elf_adjust_dynamic_copy
PR 15228
* elflink.c (_bfd_elf_adjust_dynamic_copy): Call bfd_set_error.
Andreas Arnez [Fri, 12 Dec 2014 13:14:21 +0000 (14:14 +0100)]
S390: Fix gdbserver support for TDB
This makes gdbserver actually provide values for the TDB registers
when the inferior was stopped in a transaction. The change in
linux-low.c is needed to suppress the warning for an unavailable TDB.
The test case 's390-tdbregs.exp' passes with this patch and fails
without.
gdb/gdbserver/ChangeLog:
* linux-low.c (regsets_fetch_inferior_registers): Suppress the
warning upon ENODATA from ptrace.
* linux-s390-low.c (s390_store_tdb): New.
(s390_regsets): Add regset for NT_S390_TDB.
Andreas Arnez [Fri, 12 Dec 2014 13:14:21 +0000 (14:14 +0100)]
gdbserver: Support read-only regsets in linux-low.c
For GNU/Linux targets using the regsets interface, this change
supports regsets that can be read but not written. The S390 "last
break" regset is an example. So far it had been defined with
regset->set_request == PTRACE_GETREGSET, such that the respective
ptrace call does not cause any harm. Now we just skip the whole
read/modify/write sequence for regsets that do not define a
fill_function.
gdb/gdbserver/ChangeLog:
* linux-low.c (regsets_store_inferior_registers): Skip regsets
without a fill_function.
* linux-s390-low.c (s390_fill_last_break): Remove.
(s390_regsets): Set fill_function to NULL for NT_S390_LAST_BREAK.
(s390_arch_setup): Use regset's size instead of fill_function for
loop end condition.
Andreas Arnez [Fri, 12 Dec 2014 13:14:20 +0000 (14:14 +0100)]
gdbserver: Prevent stale/random values in register cache
When fetch_inferior_registers does not update all registers, this
patch assures that no stale register values remain in the register
cache. On Linux platforms using the regsets interface, when one of
the ptrace calls used for fetching the register values returns an
error, this patch also avoids copying the random data returned from
ptrace into the register cache. All unfetched registers are marked
"unavailable" instead.
gdb/gdbserver/ChangeLog:
* linux-low.c (regsets_fetch_inferior_registers): Do not invoke
the regset's store function when ptrace returned an error.
* regcache.c (get_thread_regcache): Invalidate register cache
before fetching inferior's registers.
Andreas Arnez [Fri, 12 Dec 2014 13:14:20 +0000 (14:14 +0100)]
gdbserver: Rephrase loops in regsets_fetch/store_inferior_registers
Replace the while-loops in linux-low.c that iterate over regsets by
for-loops. This makes it clearer what is iterated over. Also, since
"continue" now moves on to the next iteration without having to
increment the regset pointer first, the code is slightly reduced.
In case of EIO the old code did not increment the regset pointer, but
iterated over the same (now disabled) regset again. This extra
iteration is now avoided.
gdb/gdbserver/ChangeLog:
* linux-low.c (regsets_fetch_inferior_registers): Rephrase
while-loop as for-loop.
(regsets_store_inferior_registers): Likewise.
Alan Modra [Fri, 12 Dec 2014 12:23:46 +0000 (22:53 +1030)]
Copy relocations against protected symbols
Copy relocs are used in a scheme to avoid dynamic text relocations in
non-PIC executables that refer to variables defined in shared
libraries. The idea is to have the linker define any such variable in
the executable, with a copy reloc copying the initial value, then have
both the executable and shared library refer to the executable copy.
If the shared library defines the variable as protected then we have
two copies of the variable being used.
PR 15228
* elflink.c (_bfd_elf_adjust_dynamic_copy): Add "info" param.
Error on copy relocs against protected symbols.
(elf_merge_st_other): Set h->protected_def.
* elf-bfd.h (struct elf_link_hash_entry): Add "protected_def".
(_bfd_elf_adjust_dynamic_copy): Update prototype.
* elf-m10300.c (_bfd_mn10300_elf_adjust_dynamic_symbol): Update
_bfd_elf_adjust_dynamic_copy call.
* elf32-arm.c (elf32_arm_adjust_dynamic_symbol): Likewise.
* elf32-cr16.c (_bfd_cr16_elf_adjust_dynamic_symbol): Likewise.
* elf32-cris.c (elf_cris_adjust_dynamic_symbol): Likewise.
* elf32-hppa.c (elf32_hppa_adjust_dynamic_symbol): Likewise.
* elf32-i370.c (i370_elf_adjust_dynamic_symbol): Likewise.
* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Likewise.
* elf32-lm32.c (lm32_elf_adjust_dynamic_symbol): Likewise.
* elf32-m32r.c (m32r_elf_adjust_dynamic_symbol): Likewise.
* elf32-m68k.c (elf_m68k_adjust_dynamic_symbol): Likewise.
* elf32-metag.c (elf_metag_adjust_dynamic_symbol): Likewise.
* elf32-or1k.c (or1k_elf_adjust_dynamic_symbol): Likewise.
* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Likewise.
* elf32-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
* elf32-sh.c (sh_elf_adjust_dynamic_symbol): Likewise.
* elf32-tic6x.c (elf32_tic6x_adjust_dynamic_symbol): Likewise.
* elf32-tilepro.c (tilepro_elf_adjust_dynamic_symbol): Likewise.
* elf32-vax.c (elf_vax_adjust_dynamic_symbol): Likewise.
* elf64-ppc.c (ppc64_elf_adjust_dynamic_symbol): Likewise.
* elf64-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
* elf64-sh64.c (sh64_elf64_adjust_dynamic_symbol): Likewise.
* elf64-x86-64.c (elf_x86_64_adjust_dynamic_symbol): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_adjust_dynamic_symbol): Likewise.
* elfxx-mips.c (_bfd_mips_elf_adjust_dynamic_symbol): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_adjust_dynamic_symbol): Likewise.
* elfxx-tilegx.c (tilegx_elf_adjust_dynamic_symbol): Likewise.
Yao Qi [Thu, 27 Nov 2014 03:37:54 +0000 (11:37 +0800)]
Improve arm_skip_prologue by using arm_analyze_prologue
Hi,
I see many fails in dw2-dir-file-name.exp on arm target when test
case is compiled with -marm, however, these fails are disappeared when
test case is compiled with -mthumb.
The difference of pass and fail shown below is that "0x000085d4 in" isn't
printed out, but test case expects to see it.
-Breakpoint 2, compdir_missing__ldir_missing__file_basename () at tmp-dw2-dir-file-name.c:999^M
-(gdb) FAIL: gdb.dwarf2/dw2-dir-file-name.exp: compdir_missing__ldir_missing__file_basename: continue to breakpoint: compdir_missing__ldir_missing__file_basename
+Breakpoint 2, 0x000085d4 in compdir_missing__ldir_missing__file_basename () at tmp-dw2-dir-file-name.c:999^M
+(gdb) PASS: gdb.dwarf2/dw2-dir-file-name.exp: compdir_missing__ldir_missing__file_basename: continue to breakpoint: compdir_missing__ldir_missing__file_basename
This difference is caused by setting breakpoint at the first instruction
in the function (actually, the first instruction in prologue, at [1]),
so that frame_show_address returns false, and print_frame doesn't print the
address.
0x00008620 <+0>: push {r11} ; (str r11, [sp, #-4]!) <--[1]
0x00008624 <+4>: add r11, sp, #0
0x00008628 <+8>: ldr r3, [pc, #24] ; 0x8648 <compdir_missing__ldir_missing__file_basename+40>
0x0000862c <+12>: ldr r3, [r3]
0x00008630 <+16>: add r3, r3, #1
0x00008634 <+20>: ldr r2, [pc, #12] ; 0x8648 <compdir_missing__ldir_missing__file_basename+40>
Then, it must be the arm_skip_prologue's fault that unable to skip
instructions in prologue. At the end of arm_skip_prologue, it matches
several instructions, such as "str r(0123),[r11,#-nn]" and
"str r(0123),[sp,#nn]", but "push {r11}" isn't handled.
These instruction matching code in arm_skip_prologue, which can be regarded
as leftover of development for many years, should be merged to
arm_analyze_prologue and use arm_analyze_prologue in arm_skip_prologue.
Here is the something like the history of arm_{skip,scan,analyze}_prologue.
Around 2002, there are arm_skip_prologue and arm_scan_prologue, but code are
duplicated to some extent. When match an instruction, both functions should
be modified, for example in Michael Snyder's patch
https://sourceware.org/ml/gdb-patches/2002-05/msg00205.html and Michael
expressed the willingness to merge both into one. Daniel added code call
thumb_analyze_prologue in arm_skip_prologue in 2006, but didn't handle its
counterpart arm_analyze_prologue, which is added in 2010
<https://sourceware.org/ml/gdb-patches/2010-03/msg00820.html>
however, the instructions matching at the bottom of arm_skip_prologue wasn't
cleaned up. This patch is to merge them into arm_analyze_prologue.
gdb:
2014-12-12 Yao Qi <yao@codesourcery.com>
PR tdep/14261
* arm-tdep.c (arm_skip_prologue): Remove unused local variable
'skip_pc'. Remove code skipping prologue instructions, use
arm_analyze_prologue instead.
(arm_analyze_prologue): Stop the scanning for unrecognized
instruction when skipping prologue.
Yao Qi [Fri, 28 Nov 2014 07:19:12 +0000 (15:19 +0800)]
Don't scan prologue past epilogue
This patch is to stop prologue analysis past epilogue in for arm mode,
while we've already had done the same to thumb mode (see
thumb_instruction_restores_sp). This is useful to parse functions
with empty body (epilogue follows prologue).
gdb:
2014-12-12 Yao Qi <yao@codesourcery.com>
* arm-tdep.c (arm_instruction_restores_sp): New function.
(arm_analyze_prologue): Call arm_instruction_restores_sp.
(arm_in_function_epilogue_p): Move code to
arm_instruction_restores_sp.
GDB Administrator [Fri, 12 Dec 2014 00:00:13 +0000 (00:00 +0000)]
Automatic date update in version.in
Nick Clifton [Thu, 11 Dec 2014 20:25:05 +0000 (20:25 +0000)]
Fix a few moere memory access violations.
PR binutils/17512
* dwarf.c (display_gdb_index): Add more range checks.
Doug Evans [Thu, 11 Dec 2014 20:05:25 +0000 (12:05 -0800)]
cp-namespace.c (cp_lookup_nested_symbol): Fix comments.
gdb/ChangeLog:
* cp-namespace.c (cp_lookup_nested_symbol): Fix comments.
Doug Evans [Thu, 11 Dec 2014 17:55:29 +0000 (09:55 -0800)]
(lookup_global_symbol_from_objfile): Simplify.
gdb/ChangeLog:
* symtab.c (lookup_symbol_in_objfile_symtabs): Delete forward decl.
(symbol *lookup_symbol_via_quick_fns): Ditto.
(lookup_symbol_in_objfile): Add forward decl.
(lookup_global_symbol_from_objfile): Simplify, call
lookup_symbol_in_objfile.
Keith Seitz [Thu, 11 Dec 2014 17:39:24 +0000 (09:39 -0800)]
This commit causes hundreds of core file regressions in gdb:
commit
f64e188b58f4aab4cbd03aa6e9fc1aa602546e26
Author: Nick Clifton <nickc@redhat.com>
Date: Tue Dec 9 12:42:18 2014 +0000
More fixes for memory access violations triggered by fuzzed binaries.
[snip]
* elf.c (elf_parse_notes): Check that the namedata is long enough
for the string comparison that is about to be performed.
(elf_read_notes): Zero-terminate the note buffer.
This change to elf_parse_notes is the culprit:
+ for (i = ARRAY_SIZE (grokers); i--;)
+ if (in.namesz >= sizeof grokers[i].string - 1
+ && strncmp (in.namedata, grokers[i].string,
+ sizeof (grokers[i].string) - 1) == 0)
Note how this applies sizeof to grokers[i].string...
bfd/ChangeLog
* elf.c (elf_parse_notes): Define convenience macro
GROKER_ELEMENT to add elements to 'grokers'.
Use grokers.len instead of sizeof in string comparisons.
Doug Evans [Thu, 11 Dec 2014 17:27:42 +0000 (09:27 -0800)]
symtab.c (domain_name) <MODULE_DOMAIN>: Add missing case.
gdb/ChangeLog:
* symtab.c (domain_name) <MODULE_DOMAIN>: Add missing case.
Alan Modra [Thu, 11 Dec 2014 05:32:35 +0000 (16:02 +1030)]
Use autoconf check for long long in binutils
Also fix a place where %lld was wrongly used to print a dwarf_vma.
* configure.ac: Check for long long and sizes of long long and long.
* elfcomm.h (HOST_WIDEST_INT): Test HAVE_LONG_LONG in place of
__STDC_VERSION__ and __GNUC__.
* strings.c (print_strings): Likewise.
* dwarf.c (DWARF_VMA_FMT, DWARF_VMA_FMT_LONG): Likewise.
(read_debug_line_header): Use dwarf_vmatoa to print warning.
* configure: Regenerate.
* config.in: Regenerate.
GDB Administrator [Thu, 11 Dec 2014 00:00:11 +0000 (00:00 +0000)]
Automatic date update in version.in
Jing Yu [Wed, 10 Dec 2014 23:36:56 +0000 (15:36 -0800)]
Give informative error message for stub-group-size
This patch gives current stub-group-size in error message when stub
is too far away.
* aarch64.cc (Target_aarch64): Add new variable: stub_group_size_.
(AArch64_relocate_functions::maybe_apply_stub): Add new parameter.
Update error message.
(Target_aarch64::do_relax): Use absolute value of option
stub_group_size. Replace local variable with class member
stub_group_size_.
Simon Marchi [Wed, 10 Dec 2014 21:10:05 +0000 (16:10 -0500)]
Only leave dprintf inserted if it is marked as persistent (PR breakpoints/17012)
On Linux native, if dprintfs are inserted when detaching, they are left
in the inferior which causes it to crash from a SIGTRAP. It also happens
with dprintfs on remote targets, when set disconnected-dprintf is off.
The rationale of the line modified by the patch was to leave dprintfs
inserted in order to support disconnected dprintfs. However, not all
dprintfs are persistent. Also, there's no reason other kinds of
breakpoints can't be persistent either. So this replaces the bp_dprintf
check with a check on whether the location is persistent.
bl->target_info.persist will be 1 only if disconnected-dprintf is on and
we are debugging a remote target. On native, it will always be 0,
regardless of the value of disconnected-dprintf. This makes sense, since
disconnected dprintfs are not supported by the native target.
One issue about the test is that it does not pass when using
--target_board=native-extended-gdbserver, partly due to bug 17302 [1].
One quick hack I tried for this was to add a useless "next" between the
call to getpid() and detach, which avoids the bug. There is still one
case where the test fails, and that is with:
- breakpoint always-inserted on
- dprintf-style agent
- disconnected-dprintf on
What happens is that my detach does not actually detach the process,
because some persistent commands (the disconnected dprintf) is present.
However since gdbserver is ran with --once, when gdb disconnects,
gdbserver goes down and takes with it all the processes it spawned and
that are still under its control (which includes my test process).
When the test checks if the test process is still alive, it obvisouly
fails. Investigating about that led me to ask a question on the ML [2]
about the behavior of detach.
Until the remote case is sorted out, the problematic test is marked as
KFAIL.
[1] https://sourceware.org/bugzilla/show_bug.cgi?id=17302
[2] https://sourceware.org/ml/gdb/2014-08/msg00115.html
gdb/Changelog:
PR breakpoints/17012
* breakpoint.c (remove_breakpoints_pid): Skip removing
breakpoint if it is marked as persistent.
gdb/testsuite/ChangeLog:
PR breakpoints/17012
* gdb.base/dprintf-detach.c: New file.
* gdb.base/dprintf-detach.exp: New file.
Simon Marchi [Wed, 10 Dec 2014 20:12:17 +0000 (15:12 -0500)]
Introduce target_is_gdbserver
This patch introduces a function in gdbserver-support.exp to find out
whether the current target is GDBserver.
The code was inspired from gdb.trace/qtro.exp, so it replaces the code
there by a call to the new function.
gdb/testsuite/ChangeLog:
* gdb.trace/qtro.exp: Replace gdbserver detection code by...
* lib/gdb.exp (target_is_gdbserver): New
procedure.
Doug Evans [Wed, 10 Dec 2014 18:42:22 +0000 (10:42 -0800)]
cp_lookup_symbol_nonlocal: Move definition closer to its subroutines.
gdb/ChangeLog:
* cp-namespace.c (cp_lookup_symbol_nonlocal): Move definition,
closer to its subroutines.
Doug Evans [Wed, 10 Dec 2014 18:21:31 +0000 (10:21 -0800)]
cp-namespace.c (lookup_symbol_file): Move next to only caller.
gdb/ChangeLog:
* cp-namespace.c (lookup_symbol_file): Move next to only caller.
Doug Evans [Wed, 10 Dec 2014 18:04:00 +0000 (10:04 -0800)]
cp_lookup_symbol_imports: Make static.
gdb/ChangeLog:
* cp-namespace.c (cp_lookup_symbol_imports): Make static.
* cp-support.c (cp_lookup_symbol_imports): Delete.
Simon Marchi [Wed, 10 Dec 2014 18:03:47 +0000 (13:03 -0500)]
Restore terminal state in mi_thread_exit (PR gdb/17627)
When a thread exits, the terminal is left in mode "terminal_is_ours"
while the target executes. This patch fixes that.
We need to manually restore the terminal setting in this particular
observer. In the case of the other MI observers that call
target_terminal_ours, gdb will end up resuming the inferior later in the
execution and call target_terminal_inferior. In the case of the thread
exit event, we still need to call target_terminal_ours to be able to
print something, but there is nothing that gdb will need to resume after
that. We therefore need to call target_terminal_inferior ourselves.
gdb/ChangeLog:
PR gdb/17627
* target.c (cleanup_restore_target_terminal): New function.
(make_cleanup_restore_target_terminal): New function.
* target.h (make_cleanup_restore_target_terminal): New
declaration.
* mi/mi-interp.c (mi_thread_exit): Use the new cleanup.
Signed-off-by: Simon Marchi <simon.marchi@ericsson.com>
Alan Modra [Wed, 10 Dec 2014 11:14:34 +0000 (21:44 +1030)]
Don't always build coffgen.o
Removes a bunch of unused functions from libbfd when building ELF or
AOUT. Split off the bits we need externally when not building a COFF
target into coff-bfd.c and coff-bfd.h.
bfd/
* Makefile.am (BFD32_LIBS, BFD32_LIBS_CFILES): Remove dwarf2
and coffgen. Add coff-bfd. Sort.
(BFD32_BACKENDS, BFD32_BACKENDS_CFILES): Add coffgen and dwarf2.
* bfd-in.h (bfd_coff_get_syment, bfd_coff_get_auxent): Delete.
(struct coff_comdat_info, bfd_coff_get_comdat_section): Delete.
* coffgen.c (coff_symbol_from): Move to coff-bfd.h as macro,
without unused param. Update uses.
(bfd_coff_get_comdat_section): Move to coff-bfd.h as macro.
(bfd_coff_get_syment, bfd_coff_get_auxent): Move to coff-bfd.c.
* libcoff-in.h: #include "coff-bfd.h".
(struct coff_section_tdata, coff_section_data): Move to coff-bfd.h.
(coff_symbol_from): Delete.
* coff-bfd.c: New file.
* coff-bfd.h: New file.
* coff-i386.c: Update coff_symbol_from occurrences.
* coff-i960.c: Likewise.
* coff-m68k.c: Likewise.
* coff-sh.c: Likewise.
* coff-x86_64.c: Likewise.
* coffcode.h: Likewise.
* pe-mips.c: Likewise.
* configure.ac (elf): Add dwarf2.lo.
(coffgen, coff, ecoff, xcoff): Define. Use when mapping bfd
target vectors to .o files. Add dwarf2 for mach-o targets.
Fix the sh target FIXME.
* po/SRC-POTFILES.in: Regenerate.
* Makefile.in: Regenerate.
* configure: Regenerate.
* bfd-in2.h: Regenerate.
* libcoff.h: Regenerate.
binutils/
* objdump.c: #include "coff-bfd.h".
ld/
* ldmisc.c: #include "coff-bfd.h"
Alan Modra [Tue, 9 Dec 2014 23:21:56 +0000 (09:51 +1030)]
Don't return DW_AT_name for function name in C++
DW_AT_name for functions typically just contains the base function
name, so lacks namespace, class and parameter information. It would
be possible to extract all these from the DWARF, but at a considerable
complication of the parser in dwarf2.c, and then you'd need to mangle
it all together. Much simpler is to look up the actual symbol. This
patch does that, avoiding the extra symbol lookup when the language
doesn't do name mangling.
PR 17541
* dwarf2.c (struct comp_unit): Add "lang".
(non_mangled): New function.
(struct funcinfo): Add "is_linkage". Reorder for better packing.
Make "name" a const char*.
(lookup_address_in_function_table): Delete functionname_ptr param.
(find_abstract_instance_name): Add is_linkage param. Set if we
have DW_AT_linkage_name or non_mangled DW_AT_name.
(scan_unit_for_symbols): Similarly set func->is_linkage.
(parse_comp_unit): Stash DW_AT_language.
(comp_unit_find_nearest_line): Replace functionname_ptr param
with function_ptr param.
(_bfd_dwarf2_find_nearest_line): Adjust above calls. Set
functionname_ptr from function->name. Call _bfd_elf_find_function
to retrieve symbol for function if not linkage name.
(_bfd_elf_find_function): Add bfd_target_elf_flavour test, moved from..
* elf.c (elf_find_function): ..here.
(_bfd_elf_find_nearest_line): Adjust calls.
* elf-bfd.h (_bfd_elf_find_function): Declare.
Alan Modra [Wed, 10 Dec 2014 03:36:42 +0000 (14:06 +1030)]
Don't access elf tdata in dwarf.c without first checking for an ELF bfd
_bfd_dwarf2_find_nearest_line may be called on a COFF bfd.
* dwarf2.c (read_address): Check bfd_target_elf_flavour before
calling get_elf_backend_data.
(_bfd_dwarf2_find_nearest_line): Fix parens.
GDB Administrator [Wed, 10 Dec 2014 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
Alan Modra [Tue, 9 Dec 2014 04:02:22 +0000 (14:32 +1030)]
Don't sort ld -r relocs for mips
HI16/LO16 are deliberately put adjacent, which might mean relocs are
then not sorted by r_offset. See tc-mips.c:mips_frob_file. Don't undo
the HI16/LO16 sorting.
PR 17666
* elf-bfd.h (struct elf_backend_data): Add sort_relocs_p.
* elfxx-target.h (elf_backend_sort_relocs_p): Define.
(elfNN_bed): Init new field.
* elflink.c (elf_link_adjust_relocs): Conditionally sort.
(bfd_elf_final_link): Control sorting of relocs.
* elfxx-mips.c (_bfd_mips_elf_sort_relocs_p): New function.
* elfxx-mips.h (_bfd_mips_elf_sort_relocs_p): Declare.
* elf32-mips.c (elf_backend_sort_relocs_p): Define.
* elf64-mips.c (elf_backend_sort_relocs_p): Define.
Denis Chertykov [Tue, 9 Dec 2014 17:00:18 +0000 (20:00 +0300)]
* od-elf32_avr.c (elf32_avr_dump_mem_usage): Fix device initialization.
Nick Clifton [Tue, 9 Dec 2014 12:42:18 +0000 (12:42 +0000)]
More fixes for memory access violations triggered by fuzzed binaries.
PR binutils/17512
* objdump.c (display_any_bfd): Avoid infinite loop closing and
opening the same archive again and again.
* archive64.c (bfd_elf64_archive_slurp_armap): Add range checks.
* libbfd.c (safe_read_leb128): New function.
* libbfd-in.h (safe_read_leb128): Add prototype.
* libbfd.h: Regenerate.
* elf-attrs.c (_bfd_elf_parse_attributes): Use safe_read_leb128.
Check for an over-long subsection length.
* elf.c (elf_parse_notes): Check that the namedata is long enough
for the string comparison that is about to be performed.
(elf_read_notes): Zero-terminate the note buffer.
Chen Gang [Tue, 9 Dec 2014 07:00:40 +0000 (17:30 +1030)]
Fix windres memory leak
* windres.c (open_file_search): Free path buffer on failure.
Chen Gang [Tue, 9 Dec 2014 06:32:54 +0000 (17:02 +1030)]
Ensure zero termination of tic4x insn buffer
* config/tc-tic4x.c (md_assemble): Ensure insn->name is zero
terminated. Simplify concatenation of parallel insn.
Alan Modra [Tue, 9 Dec 2014 04:01:01 +0000 (14:31 +1030)]
ppc64_elf_edit_opd revamp, take 2
Now that ld -r relocs are sorted by the pr17666 fix, there isn't so
much need to sort incoming relocs.
* elf64-ppc.c (sort_r_offset): Delete.
(ppc64_elf_edit_opd): Don't sort input relocs.
Doug Evans [Tue, 9 Dec 2014 02:27:41 +0000 (18:27 -0800)]
python/py-objfile.c (objfpy_get_owner): Increment refcount of result.
gdb/ChangeLog:
* python/py-objfile.c (objfpy_get_owner): Increment refcount of result.
GDB Administrator [Tue, 9 Dec 2014 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in
Nick Clifton [Mon, 8 Dec 2014 17:51:46 +0000 (17:51 +0000)]
More fixes for invalid memory accesses triggered by fuzzed binaries.
PR binutils/17531
* dwarf.c (display_debug_frames): Check for a negative
augmentation data length.
(display_gdb_index): Check for invalid offsets.
* elfcomm.c (process_archive_index_and_symbols): Check for an
index number that overflows when multiplied by the ar index size.
* readelf.c (dump_ia64_unwind): Add range checks.
(slurp_ia64_unwind_table): Change to a boolean function. Add
range checks.
(process_version_sections): Add range checks.
(get_symbol_version_string): Add check for missing section
headers.
Denis Chertykov [Mon, 8 Dec 2014 17:42:21 +0000 (20:42 +0300)]
* od-elf32_avr.c: Forgot to add a new file.
Denis Chertykov [Mon, 8 Dec 2014 17:35:24 +0000 (20:35 +0300)]
* configure.ac: Add od-elf32_avr to build.
* configure: Regenerate.
* od-elf32_avr.c: New file.
* objdump.h: Declare objdump_private_desc_elf32_avr.
Doug Evans [Mon, 8 Dec 2014 16:50:48 +0000 (08:50 -0800)]
New "owner" attribute for gdb.Objfile.
gdb/ChangeLog:
* NEWS: Mention gdb.Objfile.owner.
* python/py-objfile.c (objfpy_get_owner): New function.
(objfile_getset): Add "owner".
gdb/doc/ChangeLog:
* python.texi (Objfiles In Python): Document Objfile.owner.
gdb/testsuite/ChangeLog:
* gdb.python/py-objfile.exp: Add tests for objfile.owner.
GDB Administrator [Mon, 8 Dec 2014 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in
GDB Administrator [Sun, 7 Dec 2014 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in
Eric Botcazou [Sat, 6 Dec 2014 15:45:22 +0000 (16:45 +0100)]
Add Visium support to ld
ld/
* configure.tgt: Add Visium support.
* Makefile.am (ALL_EMULATION_SOURCES): Add eelf32visium.c.
(eelf32visium.c): New rule.
* Makefile.in: Regenerate.
* emulparams/elf32visium.sh: New file.
* scripttempl/visium.sc: Likewise.
ld/testsuite/
* lib/ld-lib.exp (check_shared_lib_support): Return 0 for Visium.
* ld-visium/: New directory.
Eric Botcazou [Sat, 6 Dec 2014 15:42:26 +0000 (16:42 +0100)]
Add Visium support to gas
gas/
* configure.tgt: Add Visium support.
* Makefile.am (TARGET_CPU_CFILES): Move config/tc-vax.c around
and add config/tc-visium.c.
(TARGET_CPU_HFILES): Move config/tc-vax.h around and add
config/tc-visium.h.
* Makefile.in: Regenerate.
* config/tc-visium.c: New file.
* config/tc-visium.h: Likewise.
* po/POTFILES.in: Regenerate.
gas/testsuite/
* gas/elf/elf.exp: Skip ifunc-1 for Visium.
* gas/visium/: New directory.
Eric Botcazou [Sat, 6 Dec 2014 15:39:24 +0000 (16:39 +0100)]
Add Visium support to binutils
binutils/
* readelf.c: Include elf/visium.h.
(guess_is_rela): Deal with EM_VISIUM.
(dump_relocations): Likewise.
(get_machine_name): Likewise.
(get_machine_flags): Likewise.
(get_osabi_name): Likewise.
(is_32bit_abs_reloc): Likewise.
(is_32bit_pcrel_reloc): Likewise.
(is_16bit_abs_reloc): Likewise.
binutils/testsuite:
* binutils-all/objcopy.exp: Skip strip-10 for Visium.
Eric Botcazou [Sat, 6 Dec 2014 15:35:18 +0000 (16:35 +0100)]
Add Visium support to bfd
bfd/
* config.bfd: Add Visium support.
* configure.ac: Likewise.
* configure: Regenerate.
* Makefile.am (ALL_MACHINES): Add cpu-visium.lo.
(ALL_MACHINES_CFILES): Add cpu-visium.c.
(BFD32_BACKENDS): Add elf32-visium.lo.
(BFD32_BACKENDS_CFILES): Add elf32-visium.c.
* Makefile.in: Regenerate.
* archures.c (DESCRIPTION): Add Visium support.
(bfd_visium_arch): Declare.
(bfd_archures_list): Add bfd_visium_arch.
* reloc.c: Add Visium relocations.
* targets.c (visium_elf32_vec): Declare.
(_bfd_target_vector): Add visium_elf32_vec.
* bfd-in2.h: Regenerate.
* libbfd.h: Likewise.
* cpu-visium.c: New file.
* elf32-visium.c: Likewise.
* po/SRC-POTFILES.in: Regenerate.
include/elf/
* common.h (EM_VISIUM): Define.
* visium.h: New file.
Eric Botcazou [Sat, 6 Dec 2014 15:25:55 +0000 (16:25 +0100)]
Add Visium support to opcodes
include/
* dis-asm.h (print_insn_visium): Declare.
include/opcode/
* visium.h: New file.
opcodes/
* configure.ac: Add Visium support.
* configure: Regenerate.
* Makefile.am (TARGET_LIBOPCODES_CFILES): Add visium-dis.c and
visium-opc.c.
* Makefile.in: Regenerate.
* disassemble.c (ARCH_visium): Define if ARCH_all.
(disassembler): Deal with bfd_arch_visium if ARCH_visium.
* visium-dis.c: New file.
* visium-opc.c: Likewise.
* po/POTFILES.in: Regenerate.
Eric Botcazou [Sat, 6 Dec 2014 15:06:46 +0000 (16:06 +0100)]
Update from upstream config repo
* config.sub: Update from upstream config repo.
GDB Administrator [Sat, 6 Dec 2014 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
Andrew Burgess [Fri, 5 Dec 2014 21:05:33 +0000 (21:05 +0000)]
Add string representation of ELF e_flags for AVR.
binutils/ChangeLog:
* readelf.c (decode_AVR_machine_flags): New function.
(get_machine_flags): Add EM_AVR case.
Steve Ellcey [Fri, 5 Dec 2014 19:06:53 +0000 (11:06 -0800)]
2014-12-05 Steve Ellcey <sellcey@mips.com>
* ecoff.c (_bfd_ecoff_slurp_symbol_table): Add cast.
Jan Kratochvil [Fri, 5 Dec 2014 18:39:12 +0000 (19:39 +0100)]
Unify lookup_symbol_in_objfile_symtabs
That's right, block_lookup_symbol_primary()'s additional requirement over
block_lookup_symbol() is:
Function is useful if one iterates all global/static blocks of an
objfile.
Which is satisfied both in lookup_symbol_in_objfile_symtabs() and in
lookup_global_symbol_from_objfile() thanks to their's ALL_OBJFILE_COMPUNITS.
In fact after reverting that
ba715d7fe49c8a59660fbd571b935b29eb7cfbdb above
the lines of code were exactly the same.
So instead of accelerating both lookup_symbol_in_objfile_symtabs() and
lookup_global_symbol_from_objfile() I just accelerated
lookup_symbol_in_objfile_symtabs() and I am proposing to reuse
lookup_symbol_in_objfile_symtabs() in lookup_global_symbol_from_objfile()
instead. In fact such unification would already save some lines of code even
before the checked-in acceleration patch above.
gdb/ChangeLog
2014-12-05 Jan Kratochvil <jan.kratochvil@redhat.com>
* symtab.c (lookup_symbol_in_objfile_symtabs): New declaration.
(lookup_global_symbol_from_objfile): Call it.
Jan Kratochvil [Fri, 5 Dec 2014 18:11:53 +0000 (19:11 +0100)]
Remove const from many struct objfile *
I am just not sure if we should go the route of
struct objfile * -> const struct objfile *
or the other way of:
const struct objfile * -> struct objfile *
Normally const adding is better but here I do not see much useful to have any
struct objfile * const and then it just causes pointer compatibility problems.
On Wed, 03 Dec 2014 18:18:44 +0100, Doug Evans wrote:
struct objfile is one case where I've decided to just leave the const
out and not worry about it.
gdb/ChangeLog
2014-12-05 Jan Kratochvil <jan.kratochvil@redhat.com>
Remove const from struct objfile *.
* solib-darwin.c, solib-spu.c, solib-svr4.c, solib.c, solist.h,
symtab.c, symtab.h: In these files.
Andreas From [Fri, 5 Dec 2014 16:18:45 +0000 (11:18 -0500)]
Add myself as write after approval maintainer
gdb/ChangeLog:
* MAINTAINERS (Write After Approval): Add "Andreas From".
H.J. Lu [Fri, 5 Dec 2014 12:52:47 +0000 (04:52 -0800)]
Define bfd_elf32_get_synthetic_symtab for x32
* elf64-x86-64.c (bfd_elf32_get_synthetic_symtab): New.
Yao Qi [Fri, 5 Dec 2014 11:56:19 +0000 (19:56 +0800)]
Revert: Don't enable gdbtk in testsuite
This patch is to revert my previous commit, because we shouldn't remove
gdbtk bits from gdb/testsuite/configure.ac while keep gdbtk bits in
gdb/configure.ac.
gdb/testsuite:
2014-12-05 Yao Qi <yao@codesourcery.com>
Revert:
* configure.ac: Remove AC_ARG_ENABLE for gdbtk. Don't invoke
AC_CONFIG_SUBDIRS(gdb.gdbtk).
* configure: Re-generated.
Yao Qi [Sat, 29 Nov 2014 08:58:34 +0000 (16:58 +0800)]
Fix parallel testing issues in gdb.guile tests
Some gdb.guile tests such as scm-error.exp copies .scm file to
${subdir}/, how ${subdir} doesn't exist in parallel testing
(outputs/${subdir} exists).
$ make -j3 check TESTS='gdb.guile/scm-section-script.exp gdb.guile/scm-error.exp gdb.guile/scm-frame-args.exp'
ERROR: remote_download to host of ../../../../git/gdb/testsuite/gdb.guile/scm-section-script.scm to gdb.guile/t-scm-section-script.scm: cp: cannot create regular file 'gdb.guile/t-scm-section-script.scm': No such file or directory
ERROR: remote_download to host of ../../../../git/gdb/testsuite/gdb.guile/scm-frame-args.scm to gdb.guile/t-scm-frame-args.scm: cp: cannot create regular file
'gdb.guile/t-scm-frame-args.scm': No such file or directory
ERROR: remote_download to host of ../../../../git/gdb/testsuite/gdb.guile/scm-error-1.scm to gdb.guile/t-scm-error-1.scm: cp: cannot create regular file 'gdb.guile/t-scm-error-1.scm': No such file or directory
This patch is to remove the third argument of gdb_remote_download, so
that gdb_remote_download can return the correct location.
Further, these tests only copy .scm files to a different name. From what
I can tell from the comments, looks we do this to avoid clobbering file
in in-tree build. However, if source and dest of copy are the same, the
operation is no-op. So it makes few sense to copy .scm files to a
different names. I tried in-tree build/test with this patch, test
result isn't changed.
gdb/testsuite:
2014-12-05 Yao Qi <yao@codesourcery.com>
* gdb.guile/scm-error.exp: Remove the third argument to
gdb_remote_download.
* gdb.guile/scm-frame-args.exp: Likewise.
* gdb.guile/scm-section-script.exp: Likewise.
Doug Evans [Fri, 5 Dec 2014 08:53:56 +0000 (00:53 -0800)]
Revert: linespec.c (iterate_name_matcher): Fix arguments to symbol_name_cmp.
This patch causes regressions in ada's operator_bp.exp test.
That's because it uses wild_match which expects arguments in
the original order.
There is still a bug here. It's hard to see because either minsyms
save the day, or the needed symtab gets expanded before linespecs
need it because of the call to cp_canonicalize_string_no_typedefs
in linespec.c:find_linespec_symbols.
But if you disable both of those things, then the bug is visible.
bash$ ./gdb -D ./data-directory testsuite/gdb.cp/anon-ns
(gdb) b doit(void)
Function "doit(void)" not defined.
gdb/ChangeLog:
Revert:
PR symtab/17602
* linespec.c (iterate_name_matcher): Fix arguments to symbol_name_cmp.
Yao Qi [Sat, 29 Nov 2014 09:24:07 +0000 (17:24 +0800)]
Use standard_testfile in i386-bp_permanent.exp
This patch is to use standard_testfile in i386-bp_permanent.exp to replace
existing setting to testfile, srcfile and binfile. So it fixes a problem
in i386-bp_permanent.exp in parallel testing.
$ make -j3 check TESTS='gdb.guile/scm-section-script.exp gdb.arch/i386-bp_permanent.exp'
....
gdb compile failed, /usr/bin/ld: cannot open output file x86/gdb/testsuite/gdb.arch/i386-bp_permanent: No such file or directory
collect2: error: ld returned 1 exit status
gdb/testsuite:
2014-12-05 Yao Qi <yao@codesourcery.com>
* gdb.arch/i386-bp_permanent.exp: Use standard_testfile.
H.J. Lu [Thu, 4 Dec 2014 22:19:41 +0000 (14:19 -0800)]
Add _bfd_elf_ifunc_get_synthetic_symtab
In i386 and x86-64 binaries with ifunc, relocations against .got.plt
section may not be in the same order as entries in PLT section. This
patch adds _bfd_elf_ifunc_get_synthetic_symtab. It takes a function
pointer which returns an array of PLT entry symbol values. It calls
the function pointer to get the PLT entry symbol value array indexed
by relocation index, instead of calling plt_sym_val on each relocation
index.
PR binutils/17677
* elf-bfd.h (_bfd_elf_ifunc_get_synthetic_symtab): New prototype.
* elf-ifunc.c (_bfd_elf_ifunc_get_synthetic_symtab): New
function.
* elf32-i386.c (elf_i386_plt_sym_val): Removed.
(elf_backend_plt_sym_val): Likewise.
(elf_i386_get_plt_sym_val): New.
(elf_i386_get_synthetic_symtab): Likewise.
(bfd_elf32_get_synthetic_symtab): Likewise.
* elf64-x86-64.c (elf_x86_64_plt_sym_val): Removed.
(elf_x86_64_plt_sym_val_offset_plt_bnd): Likewise.
(elf_backend_plt_sym_val): Likewise.
(elf_x86_64_get_plt_sym_val): New.
(elf_x86_64_get_synthetic_symtab): Use
_bfd_elf_ifunc_get_synthetic_symtab.
(bfd_elf64_get_synthetic_symtab): Don't undefine for NaCl.
GDB Administrator [Fri, 5 Dec 2014 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Doug Evans [Thu, 4 Dec 2014 20:01:22 +0000 (12:01 -0800)]
New python method gdb.Objfile.add_separate_debug_file.
gdb/ChangeLog:
* NEWS: Mention gdb.Objfile.add_separate_debug_file.
* python/py-objfile.c (objfpy_add_separate_debug_file): New function.
(objfile_getset): Add "add_separate_debug_file".
gdb/doc/ChangeLog:
* python.texi (Objfiles In Python): Document
Objfile.add_separate_debug_file.
gdb/testsuite/ChangeLog:
* gdb.python/py-objfile.exp: Add tests for
objfile.add_separate_debug_file.
Doug Evans [Thu, 4 Dec 2014 19:32:24 +0000 (11:32 -0800)]
New python attribute gdb.Objfile.build_id.
gdb/ChangeLog:
* NEWS: Mention gdb.Objfile.build_id.
* build-id.c (build_id_bfd_get): Make non-static.
* build-id.h (build_id_bfd_get): Add declaration.
* python/py-objfile.c: #include "build-id.h", "elf-bfd.h".
(OBJFPY_REQUIRE_VALID): New macro.
(objfpy_get_build_id): New function.
(objfile_getset): Add "build_id".
* utils.c (make_hex_string): New function.
* utils.h (make_hex_string): Add declaration.
gdb/doc/ChangeLog:
* python.texi (Objfiles In Python): Document Objfile.build_id.
gdb/testsuite/ChangeLog:
* lib/gdb.exp (get_build_id): New function.
(build_id_debug_filename_get): Rewrite to use it.
* gdb.python/py-objfile.exp: Add test for objfile.build_id.
Alan Modra [Thu, 4 Dec 2014 11:50:14 +0000 (22:20 +1030)]
ChangeLog typo fix
Alan Modra [Thu, 4 Dec 2014 10:40:40 +0000 (21:10 +1030)]
PowerPC gold, fix 32-bit branch address arithmetic
Mixing 64-bit and 32-bit types led to the wrong promotions. Keep
calculation in same type. Also fix a case where PLTREL25 reloc addend
should be ignored.
* Powerpc.cc (Target_powerpc::Branch_info::make_stub): Ignore
addend of PLTREL24 reloc when not generating a plt stub. Make
max_branch_offset an "Address".
(Stub_table::can_read_stub): Make max_branch_offset an "Address".
(Target_powerpc::Relocate::relocate): Likewise.
Jan Kratochvil [Thu, 4 Dec 2014 07:26:26 +0000 (08:26 +0100)]
Accelerate lookup_symbol_aux_objfile 85x
During debugging I get 10-30 seconds for a response to simple commands like:
(gdb) print vectorvar.size()
With this patch the performance gets to 1-2 seconds which is somehow
acceptable. The problem is that dwarf2_gdb_index_functions.lookup_symbol
(quick_symbol_functions::lookup_symbol) may return (and returns) NULL even for
symbols which are present in .gdb_index but which can be found in already
expanded symtab. But searching in the already expanded symtabs is just too
slow when there are 400000+ expanded symtabs. There would be needed some
single global hash table for each objfile so that one does not have to iterate
all symtabs. Which .gdb_index could perfectly serve for, just its
lookup_symbol() would need to return authoritative yes/no answers.
Even after such fix these two simple patches are useful for example for
non-.gdb_index files.
One can reproduce the slugging interactive GDB performance with:
#include <string>
using namespace std;
string var;
class C {
public:
void m() {}
};
int main() {
C c;
c.m();
return 0;
}
g++ -o slow slow.C -Wall -g $(pkg-config --libs gtkmm-3.0)
gdb ./slow -ex 'b C::m' -ex 'maintenance set per-command space' -ex 'maintenance set per-command symtab' -ex 'maintenance set per-command
time' -ex r
[...]
(gdb) p <tab><tab>
Display all 183904 possibilities? (y or n) n
(gdb) p/r var
$1 = {static npos = <optimized out>, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No
data fields>}, _M_p = 0x3a4db073d8 <std::string::_Rep::_S_empty_rep_storage+24> ""}}
Command execution time: 20.023000 (cpu), 20.118665 (wall)
^^^^^^^^^
Space used:
927997952 (+0 for this command)
Without DWZ there are X global blocks for X primary symtabs for X CUs of
objfile. With DWZ there are X+Y global blocks for X+Y primary symtabs for
X+Y CUs where Y are 'DW_TAG_partial_unit's.
For 'DW_TAG_partial_unit's (Ys) their blockvector is usually empty. But not
always, I have found there typedef symbols, there can IMO be optimized-out
static variables etc.
Neither of the patches should cause any visible behavior change.
gdb/ChangeLog
2014-12-04 Jan Kratochvil <jan.kratochvil@redhat.com>
* block.c (block_lookup_symbol_primary): New function.
* block.h (block_lookup_symbol_primary): New declaration.
* symtab.c (lookup_symbol_in_objfile_symtabs): Assert BLOCK_INDEX.
Call block_lookup_symbol_primary.
Alan Modra [Wed, 3 Dec 2014 11:30:18 +0000 (22:00 +1030)]
Sort relocs output by ld -r
bfd/
PR 17666
* elflink.c: Include bfd_stdint.h.
(cmp_ext32l_r_offset, cmp_ext32b_r_offset,
cmp_ext64l_r_offset, cmp_ext64b_r_offset): New functions.
(elf_link_adjust_relocs): Sort relocs. Free reloc hashes after
sorting invalidates.
ld/testsuite/
* ld-powerpc/vxworks-relax.rd: Update for reloc sorting.
* ld-powerpc/vxworks-relax-2.rd: Likewise.
* ld-sh/sh64/reldl32.rd: Likewise.
* ld-sh/sh64/reldl64.rd: Likewise.
Maciej W. Rozycki [Thu, 4 Dec 2014 00:06:10 +0000 (00:06 +0000)]
Correct invalid assumptions made by (mostly) DWARF-2 tests
Address issues triggered by the MIPS ISA bit handling change, usually in
tests that make artificial DWARF-2 records:
* gdb.cp/expand-psymtabs-cxx.exp -- this test is debugging an object file
and assuming addresses will be 0; with the ISA bit set code addresses
are 1 instead:
(gdb) PASS: gdb.cp/expand-psymtabs-cxx.exp: set language c++
p 'method(long)'
$1 = {void (long)} 0x1 <method(long)>
(gdb) FAIL: gdb.cp/expand-psymtabs-cxx.exp: before expand
p method
$2 = {void (long)} 0x1 <method(long)>
(gdb) FAIL: gdb.cp/expand-psymtabs-cxx.exp: force expand
p 'method(long)'
$3 = {void (long)} 0x1 <method(long)>
(gdb) FAIL: gdb.cp/expand-psymtabs-cxx.exp: after expand
Fix by matching any hex number, there's no value AFAICT for the test
in matching 0 exactly, and I suppose the method's offset within
section can be non-zero for some other reasons on other targets too.
* gdb.cp/nsalias.exp -- this assumes instructions can be aligned
arbitrarily and places code labels at odd addreses, setting the ISA
bit and wreaking havoc:
(gdb) PASS: gdb.cp/nsalias.exp: print outer::inner::innermost::x
list outer::inner::innermost::foo
Function "outer::inner::innermost::foo" not defined.
(gdb) FAIL: gdb.cp/nsalias.exp: list outer::inner::innermost::foo
break *outer::inner::innermost::foo
No symbol "foo" in namespace "outer::inner::innermost".
(gdb) FAIL: gdb.cp/nsalias.exp: setting breakpoint at
*outer::inner::innermost::foo
delete $bpnum
No breakpoint number 6.
(gdb) FAIL: gdb.cp/nsalias.exp: (outer::inner::innermost): delete $bpnum
-- etc., etc... Fix by aligning labels to 4; required by many
processors.
* gdb.dwarf2/dw2-canonicalize-type.exp, gdb.dwarf2/dw2-empty-pc-range.exp,
gdb.dwarf2/pr11465.exp -- these assume an instruction and consequently
a function can take as little as 1 byte, which makes it impossible to
look up a code symbol by an address with the ISA bit set as the
address is already beyond the end of the function:
(gdb) ptype f
No symbol "f" in current context.
(gdb) FAIL: gdb.dwarf2/dw2-canonicalize-type.exp: ptype f
(gdb) PASS: gdb.dwarf2/dw2-empty-pc-range.exp: empty range before CU load
ptype realrange
No symbol "realrange" in current context.
(gdb) FAIL: gdb.dwarf2/dw2-empty-pc-range.exp: valid range after CU load
(gdb) p N::c.C
Cannot take address of method C.
(gdb) FAIL: gdb.dwarf2/pr11465.exp: p N::c.C
-- fix by increasing the size of the function to 4 (perhaps code in
gdb/mips-tdep.c could look up code symbols up to twice, with and
failing that without the ISA bit set, but it seems wrong to me to
implement specific handling for invalid code just to satisfy test
cases that assume too much about the target).
* gdb.dwarf2/dw2-case-insensitive.exp -- an artificial code label is
created, but does not work because data (a `.align' pseudo-op in this
case) follows and as a result the label has no MIPS16 or microMIPS
annotation in the symbol table:
(gdb) PASS: gdb.dwarf2/dw2-case-insensitive.exp: set case-sensitive off
info functions fUnC_lang
All functions matching regular expression "fUnC_lang":
File file1.txt:
foo FUNC_lang(void);
Non-debugging symbols:
0x004006e0 FUNC_lang_start
(gdb) FAIL: gdb.dwarf2/dw2-case-insensitive.exp: regexp case-sensitive off
-- fix by adding a `.insn' pseudo-op on MIPS targets; the pseudo-op
marks data as instructions.
* gdb.dwarf2/dw2-stack-boundary.exp -- the test case enables complaints
and assumes none will be issued beyond ones explicitly arranged by the
test case, however overlapping sections are noticed while minimal
symbols are looked up by `mips_adjust_dwarf2_addr' in DWARF-2 record
processing:
(gdb) set complaints 100
(gdb) PASS: gdb.dwarf2/dw2-stack-boundary.exp: set complaints 100
file ./dw2-stack-boundary
Reading symbols from ./dw2-stack-boundary...location description stack
underflow...location description stack overflow...unexpected overlap
between:
(A) section `.reginfo' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x18)
(B) section `*COM*' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x0).
Will ignore section B...unexpected overlap between:
(A) section `.reginfo' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x18)
(B) section `*UND*' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x0).
Will ignore section B...unexpected overlap between:
(A) section `.reginfo' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x18)
(B) section `*ABS*' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x0).
Will ignore section B...done.
(gdb) FAIL: gdb.dwarf2/dw2-stack-boundary.exp: check partial symtab errors
-- fix by ignoring any extra noise as long as what we look for is
found.
* gdb.cp/expand-psymtabs-cxx.exp: Accept any address of
`method(long)', not just 0x0.
* gdb.cp/nsalias.exp: Align code labels to 4.
* gdb.dwarf2/dw2-canonicalize-type.S (main): Expand to 4-bytes.
* gdb.dwarf2/dw2-empty-pc-range.S (main): Likewise.
* gdb.dwarf2/pr11465.S (_ZN1N1cE): Likewise.
* gdb.dwarf2/dw2-case-insensitive.c (START_INSNS): New macro.
(cu_text_start, FUNC_lang_start): Use `START_INSNS'.
* gdb.dwarf2/dw2-stack-boundary.exp: Accept noise in complaints.
GDB Administrator [Thu, 4 Dec 2014 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
Alan Modra [Wed, 3 Dec 2014 05:47:23 +0000 (16:17 +1030)]
powerpc gold, work around pr17670
pr17670 is about an assert triggering on a branch to an undefined
weak symbol, the symbol being undefined due to dropping its comdat
group section. (Well sort of. The symbol is actually defined in
an .opd section which isn't part of the group, but the code section
the opd entry points at is dropped.) So don't assert.
Also, don't make long branch stubs to such symbols, and arrange to
have target-reloc.h code warn when applying relocs that use the sym.
PR 17670
* symtab.cc (Symbol::set_undefined): Remove assertion.
* powerpc.cc (Target_powerpc::symval_for_branch): Don't assert
on symbols defined in discarded sections, instead return false.
Rearrange params, update all callers.
(Target_powerpc::Branch_info::make_stub): Don't make stubs for
branches to syms in discarded sections.
(Global_symbol_visitor_opd::operator()): Set discarded opd syms
undefined and flag as discarded.
(Target_powerpc::Relocate::relocate): Localize variable.
Maciej W. Rozycki [Wed, 3 Dec 2014 19:19:41 +0000 (19:19 +0000)]
MIPS: Add support for microMIPS Linux signal trampolines
The necessity for this change has been revealed in the course of
investigation related to proposed changes in the treatment of the ISA
bit encoded in function symbols on the MIPS target. This change adds
support for Linux signal trampolines encoded with the microMIPS
instruction set. Such trampolines are used by the Linux kernel if
compiled as a microMIPS binary (even if the binary run/debugged itself
contains no microMIPS code at all).
To see if we need to check whether the execution mode selected matches
the given trampoline I have checked what the bit patterns of all the
trampoline sequences decode to in the opposite instruction set. This
produced useless or at least unusual code in most cases, for example:
microMIPS/EB, o32 sigreturn, decoded as MIPS code:
30401017 andi zero,v0,0x1017
00008b7c dsll32 s1,zero,0xd
MIPS/EL, o32 sigreturn, decoded as microMIPS code:
1017 2402 addi zero,s7,9218
000c 0000 sll zero,t0,0x0
However in some corner cases reasonable code can mimic a trampoline, for
example:
MIPS/EB, n32 rt_sigreturn, decoded as microMIPS code:
2402 sll s0,s0,1
1843 0000 sb v0,0(v1)
000c 0f3c jr t0
-- here the first instruction is a 16-bit one, making things nastier
even as there are some other microMIPS instructions whose first 16-bit
halfword is 0x000c and therefore matches this whole trampoline pattern.
To overcome this problem I have decided the signal trampoline unwinder
has to ask the platform backend whether it can apply a given trampoline
pattern to the code location being concerned or not. Anticipating the
acceptance of the ISA bit proposal I decided the handler not to merely
be a predicate, but also to be able to provide an adjusted PC if
required. I decided that returning zero will mean that the trampoline
pattern is not applicable and any other value is the adjusted PC to use;
a handler may return the value requested if the trampoline pattern and
the PC requested as-is are both accepted.
This changes the semantics of the trampoline unwinder a bit in that the
zero PC now has a special value. I think this should be safe as a NULL
pointer is generally supposed to be invalid.
* tramp-frame.h (tramp_frame): Add `validate' member.
* tramp-frame.c (tramp_frame_start): Validate trampoline before
scanning.
* mips-linux-tdep.c (MICROMIPS_INST_LI_V0): New macro.
(MICROMIPS_INST_POOL32A, MICROMIPS_INST_SYSCALL): Likewise.
(mips_linux_o32_sigframe): Initialize `validate' member.
(mips_linux_o32_rt_sigframe): Likewise.
(mips_linux_n32_rt_sigframe): Likewise.
(mips_linux_n64_rt_sigframe): Likewise.
(micromips_linux_o32_sigframe): New variable.
(micromips_linux_o32_rt_sigframe): Likewise.
(micromips_linux_n32_rt_sigframe): Likewise.
(micromips_linux_n64_rt_sigframe): Likewise.
(mips_linux_o32_sigframe_init): Handle microMIPS trampolines.
(mips_linux_n32n64_sigframe_init): Likewise.
(mips_linux_sigframe_validate): New function.
(micromips_linux_sigframe_validate): Likewise.
(mips_linux_init_abi): Install microMIPS trampoline unwinders.
Nick Clifton [Wed, 3 Dec 2014 19:50:48 +0000 (19:50 +0000)]
Fix memory access problems exposed by fuzzed binaries.
PR binutils/17512
* objdump.c (free_debug_section): Reset the compress_status as
well.
* compress.c (bfd_get_full_section_contents): Fail if there are no
section contents available when the compress_status is
COMPRESS_SECTION_DONE.
* libbfd.c (bfd_malloc): Refuse to allocate a negative size.
(bfd_malloc2): Use bfd_malloc.
(bfd_realloc): Refuse to reallocate a negative size.
(bfd_realloc2): Use bfd_realloc.
(bfd_realloc_or_free): Use bfd_realloc.
(bfd_zmalloc): Use bfd_malloc.
(bfd_zmalloc): Use bfd_malloc2.
* opncls.c (bfd_alloc): Refuse to allocate a negative size.
H.J. Lu [Wed, 3 Dec 2014 18:59:46 +0000 (10:59 -0800)]
Compile pie_copyrelocs_test.cc with -fno-exceptions -fno-asynchronous-unwind-tables
PR gold/17675
* testsuite/Makefile.am (pie_copyrelocs_test_CXXFLAGS): New.
* testsuite/Makefile.in: Regenerated.
H.J. Lu [Wed, 3 Dec 2014 16:40:19 +0000 (08:40 -0800)]
Replace copyreloc-main.c with copyreloc-main.S
* ld-x86-64/copyreloc-main.c: Removed.
* ld-x86-64/copyreloc-main.S: New.
* ld-x86-64/x86-64.exp: Replace copyreloc-main.c with
copyreloc-main.S.
Nick Clifton [Wed, 3 Dec 2014 16:33:33 +0000 (16:33 +0000)]
Replace calls to abort (in readelf) with informative error messages.
PR binutils/17531
* readelf.c (get_machine_flags): Replace call to abort with a
warning message and a return value.
(get_elf_section_flags): Likewise.
(get_symbol_visibility): Likewise.
(get_ia64_symbol_other): Likewise.
(get_ia64_symbol_other): Likewise.
(is_32bit_abs_reloc): Likewise.
(apply_relocations): Likewise.
(display_arm_attribute): Likewise.
H.J. Lu [Wed, 3 Dec 2014 16:10:04 +0000 (08:10 -0800)]
Reformat elf_x86_64_create_dynamic_sections
* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Reformat.
Alan Modra [Wed, 3 Dec 2014 11:26:19 +0000 (21:56 +1030)]
powerpc gold, fix pr17566
Code stolen from arm.cc.
PR 17566
* powerpc.cc (Target_powerpc::Scan::local): Use add_local_section
when adding dynamic relocations against section symbols.
Ulrich Weigand [Wed, 3 Dec 2014 14:38:46 +0000 (15:38 +0100)]
Use core regset iterators on Sparc Solaris
Remove native-only core file handling on Sparc Solaris. Instead,
enable the sparc target generic core regset logic on Solaris by
providing appropriate register offset maps.
Thanks to Joel Brobecker for testing!
gdb/
* config/sparc/sol2.mh (NATDEPFILES): Remove core-regset.o.
* sparc-sol2-tdep.c: Include "regset.h".
(sparc32_sol2_supply_core_gregset): New function.
(sparc32_sol2_collect_core_gregset): Likewise.
(sparc32_sol2_supply_core_fpregset): Likewise.
(sparc32_sol2_collect_core_fpregset): Likewise.
(sparc32_sol2_gregset, sparc32_sol2_fpregset): New variables.
(sparc32_sol2_init_abi): Set tdep->gregset/sizeof_gregset and
tdep->fpregset/sizeof_fpregset.
* sparc64-sol2-tdep.c: Include "regset.h".
(sparc64_sol2_supply_core_gregset): New function.
(sparc64_sol2_collect_core_gregset): Likewise.
(sparc64_sol2_supply_core_fpregset): Likewise.
(sparc64_sol2_collect_core_fpregset): Likewise.
(sparc64_sol2_gregset, sparc64_sol2_fpregset): New variables.
(sparc64_sol2_init_abi): Set tdep->gregset/sizeof_gregset and
tdep->fpregset/sizeof_fpregset.
Simon Marchi [Wed, 3 Dec 2014 13:56:10 +0000 (08:56 -0500)]
Fix make_cleanup_dtor signature to match declaration
The definition does not use the typedef for the dtor function pointer
type that the declaration uses. It's a cosmetic-only change.
ChangeLog:
* common/cleanups.c (make_cleanup_dtor): Use typedef for dtor
type.
Joel Brobecker [Wed, 3 Dec 2014 07:33:13 +0000 (02:33 -0500)]
callback.h:struct host_callback_struct compilation error on Windows hosts.
On Windows, a recent gnulib update imported the lstat module, and
this caused a remote-sim.c build failure in struct host_callback_struct:
In file included from /[...]/gdb/remote-sim.c:34:0:
/[...]/gdb/../include/gdb/callback.h:93:9: error: duplicate member '_stati64'
int (*lstat) (host_callback *, const char *, struct stat *);
^
What happens it that gnulib's stat.h makes the following defines:
/* Large File Support on native Windows. */
#if 1
# define stat _stati64
#endif
and then:
#if 1
# if ! 0
/* mingw does not support symlinks, therefore it does not have lstat. But
without links, stat does just fine. */
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define lstat stat
# endif
So, the following fields in struct host_callback_struct...
int (*stat) (host_callback *, const char *, struct stat *);
int (*fstat) (host_callback *, int, struct stat *);
int (*lstat) (host_callback *, const char *, struct stat *);
... get translated to...
int (*_stati64) (host_callback *, const char *, struct _stati64 *);
int (*_fstati64) (host_callback *, int, struct _stati64 *);
int (*_stati64) (host_callback *, const char *, struct _stati64 *);
... which causes two fields to have the same name.
This patch fixes the issue by renaming the stat-related fields
by adding a "to_" prefix, similar to what is done in GDB's
target_ops vector.
include/gdb/ChangeLog:
* callback.h (struct host_callback_struct) <to_stat>: Renamed
from "stat".
<to_fstat>: Renamed from "fstat".
<to_lstat>: Renamed from "lstat".
sim/common/ChangeLog:
* sim-io.c (sim_io_stat, sim_io_fstat): Adjust calls to "stat"
and "fstat" callbacks by calls to "to_stat" and "to_fstat" (resp)
callbacks following renaming in callback.h.
* syscall.c (cb_syscall): Likewise. Adjust calls to "lstat"
callback by call to "to_lstat" callback
sim/cris/ChangeLog:
* traps.c (cris_break_13_handler): Adjust call to "fstat" callback
by call to "to_fstat" following renaming in callback.h.
sim/h8300/ChangeLog:
* compile.c (sim_resume): Adjust calls to "stat" and "fstat"
callbacks by calls to "to_stat" and "to_fstat" (resp) callbacks
following renaming in callback.h.
H.J. Lu [Wed, 3 Dec 2014 00:57:45 +0000 (16:57 -0800)]
Check info->executable for symbols which need copy relocs
* elf64-x86-64.c (elf_x86_64_relocate_section): Check
info->executable for symbols which need copy relocs.
Doug Evans [Wed, 3 Dec 2014 00:54:16 +0000 (16:54 -0800)]
Remove cplus_specific from general_symbol_info.
This patch reverts the addition of cplus_specific added here:
2010-07-16 Sami Wagiaalla <swagiaal@redhat.com>
* symtab.h (symbol_set_demangled_name): Now takes an optional objfile*
argument.
(cplus_specific): New struct.
* symtab.c (symbol_set_demangled_name): Updated.
Use cplus_specific for cplus symbols.
(symbol_get_demangled_name): Retrive the name from the cplus_specific
struct for cplus symbols.
(symbol_init_language_specific): Set cplus_specific for cplus symbols.
(symbol_set_names): Pass objfile to symbol_set_demangled_name.
* symtab.c (symbol_init_cplus_specific): New function.
It was added in anticipation of improved template support:
https://sourceware.org/ml/gdb-patches/2010-05/msg00594.html
https://sourceware.org/ml/gdb-patches/2010-07/msg00284.html
However, minsyms pay the price for this space too.
For my standard benchmark this patch gets back 44MB of memory
when gdb starts. [There's still ~440MB of memory used
by the demangled ELF symbols of this benchmark, but that's another topic.]
When the improved templated support is added,
I wonder if this can be moved to struct symbol.
Hmmm, we already have a special version of
struct symbol for templates (struct template_symbol).
gdb/ChangeLog:
* symtab.c (symbol_init_cplus_specific): Delete.
(symbol_set_demangled_name): Remove special c++ support.
(symbol_get_demangled_name, symbol_set_language): Ditto.
* symtab.h (struct cplus_specific): Delete.
(struct general_symbol_info) <language_specific>: Remove
cplus_specific.
H.J. Lu [Wed, 3 Dec 2014 00:50:14 +0000 (16:50 -0800)]
Discard space for relocs against symbols with copy relocs
This patch reverts the change in elf_x86_64_check_relocs and the partial
change in elf_x86_64_adjust_dynamic_symbol. Instead, we discard space
in PIE for relocs against symbols which turn out to need copy relocs.
* elf64-x86-64.c (elf_x86_64_check_relocs): Revert the last
change.
(elf_x86_64_adjust_dynamic_symbol): Don't check !info->shared
with ELIMINATE_COPY_RELOCS.
(elf_x86_64_allocate_dynrelocs): For PIE, discard space for
relocs against symbols which turn out to need copy relocs.
Doug Evans [Wed, 3 Dec 2014 00:40:38 +0000 (16:40 -0800)]
PR symtab/17602
gdb/ChangeLog:
PR symtab/17602
* linespec.c (iterate_name_matcher): Fix arguments to symbol_name_cmp.
gdb/testsuite/ChangeLog:
PR symtab/17602
* gdb.cp/anon-ns.cc: Move guts of this file to ...
* gdb.cp/anon-ns-2.cc: ... here. New file.
* gdb.cp/anon-ns.exp: Update.
Doug Evans [Wed, 3 Dec 2014 00:24:37 +0000 (16:24 -0800)]
PR symtab/17591
gdb/ChangeLog:
PR symtab/17591
* dwarf2read.c (find_slot_in_mapped_hash): Use cp_remove_params
to strip parameters.
Doug Evans [Wed, 3 Dec 2014 00:22:18 +0000 (16:22 -0800)]
dwarf2read.c (peek_die_abbrev): Improve error message text.
gdb/ChangeLog:
* dwarf2read.c (peek_die_abbrev): Improve error message text.
Doug Evans [Wed, 3 Dec 2014 00:15:53 +0000 (16:15 -0800)]
Remove remnant of Chill support.
gdb/ChangeLog:
* valops.c (do_search_struct_field): Remove remnant of Chill support.
Ref: commit
4c2260aa5c261f7bfb26dcf3aa7c67876720b17e
GDB Administrator [Wed, 3 Dec 2014 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
H.J. Lu [Tue, 2 Dec 2014 23:14:28 +0000 (15:14 -0800)]
X86-64: Allow copy relocs for building PIE
This patch allows copy relocs for non-GOT pc-relative relocation in PIE.
bfd/
* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Always
allow copy relocs for building executables.
(elf_x86_64_check_relocs): Allow copy relocs for non-GOT
pc-relative relocation in shared object.
(elf_x86_64_adjust_dynamic_symbol): Allocate copy relocs for
PIE.
(elf_x86_64_relocate_section): Don't copy a pc-relative
relocation into the output file if the symbol needs copy reloc.
ld/testsuite/
* ld-x86-64/copyreloc-lib.c: New file.
* ld-x86-64/copyreloc-main.c: Likewise.
* ld-x86-64/copyreloc-main.out: Likewise.
* ld-x86-64/copyreloc-main1.rd: Likewise.
* ld-x86-64/copyreloc-main2.rd: Likewise.
* ld-x86-64/x86-64.exp: Run copyreloc tests.
Simon Marchi [Tue, 2 Dec 2014 22:19:11 +0000 (17:19 -0500)]
Fix comment typo
ChangeLog:
* common/cleanups.c (make_cleanup_dtor): Fix comment typo.
Nick Bull [Tue, 2 Dec 2014 19:15:29 +0000 (11:15 -0800)]
New python events: inferior call, register/memory changed.
gdb/ChangeLog:
* NEWS: Mention new Python events.
* Makefile.in (SUBDIR_PYTHON_OBS): Add py-infevents.o.
(SUBDIR_PYTHON_SRCS): Add py-infevents.c.
(py-infevents.o): New rule.
* doc/observer.texi (inferior_call_pre, inferior_call_post)
(memory_changed, register_changed): New observers.
* infcall.c (call_function_by_hand): Notify observer before and
after inferior call.
* python/py-event.h (inferior_call_kind): New enum.
(emit_inferior_call_event): New prototype.
(emit_register_changed_event): New prototype.
(emit_memory_changed_event): New prototype.
* python/py-events.h (events_object): New registries
inferior_call, memory_changed and register_changed.
* python/py-evts.c (gdbpy_initialize_py_events): Add the
inferior_call, memory_changed and register_changed registries.
* python/py-infevents.c: New.
* python/py-inferior.c (python_on_inferior_call_pre)
(python_on_inferior_call_post, python_on_register_change)
(python_on_memory_change): New functions.
(gdbpy_initialize_inferior): Attach python handler to new
observers.
* python/py-infthread.c(gdbpy_create_ptid_object): New.
(thpy_get_ptid) Use gdbpy_create_ptid_object.
* python/python-internal.h:
(gdbpy_create_ptid_object)
(gdbpy_initialize_inferior_call_pre_event)
(gdbpy_initialize_inferior_call_post_event)
(gdbpy_initialize_register_changed_event)
(gdbpy_initialize_memory_changed_event): New prototypes.
* python/python.c (_initialize_python): Initialize new events.
* valops.c (value_assign): Notify register_changed observer.
gdb/doc/ChangeLog:
* python.texi (Events In Python): Document new events
InferiorCallPreEvent, InferiorCallPostEvent, MemoryChangedEvent
and RegisterChangedEvent.
gdb/testsuite/ChangeLog:
* gdb.python/py-events.py (inferior_call_handler): New.
(register_changed_handler, memory_changed_handler): New.
(test_events.invoke): Register new handlers.
* gdb.python/py-events.exp: Add tests for inferior call,
memory_changed and register_changed events.
Doug Evans [Tue, 2 Dec 2014 19:12:49 +0000 (11:12 -0800)]
revert previous patch so that I can re-commit with correct author
Doug Evans [Tue, 2 Dec 2014 18:59:08 +0000 (10:59 -0800)]
New python events: infcall, register/memory changed.
gdb/ChangeLog:
* NEWS: Mention new Python events.
* Makefile.in (SUBDIR_PYTHON_OBS): Add py-infevents.o.
(SUBDIR_PYTHON_SRCS): Add py-infevents.c.
(py-infevents.o): New rule.
* doc/observer.texi (inferior_call_pre, inferior_call_post)
(memory_changed, register_changed): New observers.
* infcall.c (call_function_by_hand): Notify observer before and
after inferior call.
* python/py-event.h (inferior_call_kind): New enum.
(emit_inferior_call_event): New prototype.
(emit_register_changed_event): New prototype.
(emit_memory_changed_event): New prototype.
* python/py-events.h (events_object): New registries
inferior_call, memory_changed and register_changed.
* python/py-evts.c (gdbpy_initialize_py_events): Add the
inferior_call, memory_changed and register_changed registries.
* python/py-infevents.c: New.
* python/py-inferior.c (python_on_inferior_call_pre)
(python_on_inferior_call_post, python_on_register_change)
(python_on_memory_change): New functions.
(gdbpy_initialize_inferior): Attach python handler to new
observers.
* python/py-infthread.c(gdbpy_create_ptid_object): New.
(thpy_get_ptid) Use gdbpy_create_ptid_object.
* python/python-internal.h:
(gdbpy_create_ptid_object)
(gdbpy_initialize_inferior_call_pre_event)
(gdbpy_initialize_inferior_call_post_event)
(gdbpy_initialize_register_changed_event)
(gdbpy_initialize_memory_changed_event): New prototypes.
* python/python.c (_initialize_python): Initialize new events.
* valops.c (value_assign): Notify register_changed observer.
gdb/doc/ChangeLog:
* python.texi (Events In Python): Document new events
InferiorCallPreEvent, InferiorCallPostEvent, MemoryChangedEvent
and RegisterChangedEvent.
gdb/testsuite/ChangeLog:
* gdb.python/py-events.py (inferior_call_handler): New.
(register_changed_handler, memory_changed_handler): New.
(test_events.invoke): Register new handlers.
* gdb.python/py-events.exp: Add tests for inferior call,
memory_changed and register_changed events.
Doug Evans [Tue, 2 Dec 2014 18:01:07 +0000 (10:01 -0800)]
python/py-infthread.c: Whitespace fixes.
gdb/ChangeLog:
* python/py-infthread.c: Whitespace fixes.
Denis Chertykov [Tue, 2 Dec 2014 16:45:59 +0000 (19:45 +0300)]
* MAINTAINERS: Fix my email address.
Andreas Arnez [Tue, 2 Dec 2014 15:35:47 +0000 (16:35 +0100)]
execl-update-breakpoints.exp: Move whole segment instead of .text section
The test case builds two copies of the program, one with the compile
option "ldflags=-Wl,-Ttext=0x1000000" and the other with the address
changed to 0x2000000. However, when linking with ld.bfd, the
resulting executables crash early in ld.so on S390 and i386.
Analysis of the crash: The default linker script establishes a certain
order of loadable sections, and the option "-Ttext" effectively splits
these into an "unaffected" lot (everything before .text) and an
"affected" lot. The affected lot is placed at the given address,
whereas the unaffected lot stays at its default address. The
unaffected lot starts at an aligned address plus Elf header sizes,
which is good if it is the first LOAD segment (like on AMD64). But if
the affected lot comes first instead (like on S390 and i386), the PHDR
doesn't fit there and is placed *outside* any LOAD segments. Then the
PHDR is not mapped when the loader gets control, and the loader runs
into a segmentation fault while trying to access it.
Since we are lucky about the order of segments on AMD64, the test
succeeds there, but the resulting binaries are unusually large -- 2.1M
each, with lots of padding within.
When replacing '-Ttext' by '-Ttext-segment', the linker moves all
segments consistently, the binaries have normal sizes, and the test
case succeeds on all mentioned platforms.
Since old versions of the gold linker don't support '-Ttext-segment',
the patch also adds logic for falling back to '-Ttext'.
gdb/testsuite/ChangeLog:
* gdb.base/execl-update-breakpoints.exp: Specify the link address
with '-Ttext-segment' instead of '-Ttext'. Fall back to '-Ttext'
if the linker doesn't understand this.
Andrew Bennett [Thu, 20 Nov 2014 15:40:16 +0000 (15:40 +0000)]
[MIPS] When calculating a relocation using an undefined weak symbol don't check for overflow.
In MIPS the relocation calculation only ignores the overflow checks for undefined
weak symbols on relocations associated with j/jal. This patch extends this to
the relocations used by the: b* instructions; pc/gp relative symbol offsets; and the
lwpc/ldpc MIPS r6 instructions.
bfd/
* elfxx-mips.c (mips_elf_calculate_relocation): Only check for overflow
on non-weak undefined symbols.
ld/testsuite/
* ld-mips-elf/mips-elf.exp: Add in undefined weak overflow tests for
o32, n32 and n64.
* ld-mips-elf/undefweak-overflow.s: New test.
* ld-mips-elf/undefweak-overflow.d: New test.
* ld-mips-elf/undefweak-overflow-n32.d: New test.
* ld-mips-elf/undefweak-overflow-n64.d: New test.
Alan Modra [Tue, 2 Dec 2014 04:39:16 +0000 (15:09 +1030)]
ppc64_elf_edit_opd revamp
This patch sorts .opd relocs (see pr17666) and allows .opd sections
with a mix of 16 and 24 byte entries to be edited.
* elf64-ppc.c (OPD_NDX): Define. Use throughout for sizing/indexing
_opd_sec_data array, halving required memory.
(sort_r_offset): New function.
(ppc64_elf_edit_opd): Sort incoming relocs. Accept .opd
sections with a mix of 16 and 24 byte OPD entries. Don't
attempt to honour --non-overlapping-opd for .opd sections with
unexpected relocs. Simplify opd entry size calculations by
first finding the reloc for the next entry. Make edit loop
handle one opd entry per iteration, with an inner loop
handling relocs per entry.
Andreas Arnez [Tue, 2 Dec 2014 09:47:30 +0000 (10:47 +0100)]
S390: Fix 'expedite' for s390-te-linux64
Fix a typo in the expedited registers for s390-te-linux64.
gdb/ChangeLog:
* features/Makefile (s390-te-linux64-expedite): Replace
non-existant r14 and r15 by r14l and r15l, respectively.
* regformats/s390-te-linux64.dat: Regenerate.
GDB Administrator [Tue, 2 Dec 2014 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
This page took 0.05036 seconds and 4 git commands to generate.