Tom Tromey [Sun, 29 Jul 2018 21:23:51 +0000 (15:23 -0600)]
Remove old lint code
This removes dead code that, according to the comments, existed to
placate lint. I don't think this has been relevant in a long time,
and certainly not since gdb switched to C++.
Nick Clifton [Mon, 30 Jul 2018 12:58:15 +0000 (13:58 +0100)]
Prevent a seg-fault in the linker when trying to process SH object files with bogus relocs.
PR 22706
* elf32-sh.c (sh_elf_relocate_section): When processing
translation relocs, fail if the relocation offset is too small.
Replace BFD_ASSERTs with more helpful error messages.
Andrew Jenner [Mon, 30 Jul 2018 11:24:14 +0000 (12:24 +0100)]
Add support for the C_SKY series of processors.
This patch series is a new binutils port for C-SKY processors, including support for both the V1 and V2 processor variants. V1 is derived from the MCore architecture while V2 is substantially different, with mixed 16- and 32-bit instructions, a larger register set, a different (but overlapping) ABI, etc. There is support for bare-metal ELF targets and Linux with both glibc and uClibc.
This code is being contributed jointly by C-SKY Microsystems and Mentor Graphics. C-SKY is responsible for the technical content and has proposed Lifang Xia and Yunhai Shang as port maintainers. (Note that C-SKY does have a corporate copyright assignment on file with the FSF.) Mentor Graphics' role has been cleaning up the code, adding documentation and additional test cases, etc, to address issues we anticipated reviewers would complain about.
* config/tc-hppa.c: Include "struc-symbol.h".
(pa_build_unwind_subspace): Use call_info->start_symbol->sy_frag
instead of frag_now for local symbol replacement.
Andrew Burgess [Wed, 11 Jul 2018 15:58:47 +0000 (16:58 +0100)]
gdb: Don't call gdb_load_shlib unless GDB is running
The gdb_load_shlib function will, on remote targets, try to run some
GDB commands. This obviously isn't going to work unless GDB is
running.
The gdb.trace/tspeed.exp test calls gdb_load_shlib before starting
GDB. Don't do that.
The failure that's triggered is actually DeJaGNU complaining that the
variable $use_gdb_stub doesn't exist, this is only created when GDB is
started. Something like this should trigger a failure:
make check-gdb \
RUNTESTFLAGS="--target_board=remote-gdbserver-on-localhost \
gdb.trace/tspeed.exp"
This commit also adds a check to gdb_load_shlib that GDB is running.
The check is always performed, so this should catch cases where a GDB
developer adds a use of gdb_load_shlib but doesn't test their code
with a remote target.
gdb/testsuite/ChangeLog:
* gdb.trace/tspeed.exp: Only call gdb_load_shlib after gdb has
started.
* lib/gdb.exp (gdb_load_shlib): Call perror if GDB is not running.
Tom de Vries [Wed, 18 Jul 2018 11:38:35 +0000 (13:38 +0200)]
[gdb/exp] Interpret size of vla with unknown size as <optimized out>
At -O3 -g -gstrict-dwarf, gcc generates for an optimized out vla 'a' a
DW_TAG_variable with type DW_TAG_array_type containing one
DW_TAG_subrange_type, but without DW_AT_upper_bound or DW_AT_count, which
makes the upper bound value 'unknown':
...
.uleb128 0x15 # (DIE (0x161) DW_TAG_variable)
.long 0xec # DW_AT_abstract_origin
.long 0x170 # DW_AT_type
...
.uleb128 0xa # (DIE (0x170) DW_TAG_array_type)
.long 0x110 # DW_AT_type
.long 0x17f # DW_AT_sibling
.uleb128 0x17 # (DIE (0x179) DW_TAG_subrange_type)
.long 0xc6 # DW_AT_type
.byte 0 # end of children of DIE 0x170
...
But gdb prints '0' for the size of 'a':
...
/gdb ./vla-1.exe -batch -ex "b f1" -ex "run" -ex "p sizeof(a)"
Breakpoint 1 at 0x4004c0: f1. (2 locations)
Breakpoint 1, f1 (i=<optimized out>) at vla-1.c:18
18 }
$1 = 0
...
while <optimized out> would be more appropriate.
This patch fixes that in evaluate_subexp_for_sizeof.
Build and reg-tested on x86_64-linux.
2018-07-28 Tom de Vries <tdevries@suse.de>
* eval.c (evaluate_subexp_for_sizeof): Interpret size of dynamic type
with undefined upper bound as <optimized out>.
* gdb.base/vla-optimized-out-o3-strict.exp: New file.
It has been reported that gcore's manpage is a bit imprecise when it
comes to two things:
- It doesn't explicity say that the command accepts more than one PID
on its CLI.
- It fails to mention that the argument passed through the "-o" option
is actually a prefix that will be used to compose the corefile's
filename, and not the actual filename.
I decided to give it a try and rewrite parts of the text to further
clarify these two points. I ended up rewording the "Description"
section because, IMHO, it was a bit confuse to understand.
To make things consistent, I've also renamed the "$name" variable in
the gcore.in script, and expanded the usage text.
* gdb.texinfo (gcore man): Rewrite "Description" and "-o"
option sections to further clarify that gcore can take more
than one PID, and that "-o" is used to specify a prefix, not a
filename.
Fix an issue with commit 8095d2f70e1a ("MIPS/GAS: Split Loongson MMI
Instructions from loongson2f/3a"), AFL_ASE_MASK should be 0x0006ffff
instead of 0x0004ffff.
2018-07-27 Chenghua Xu <paul.hua.gm@gmail.com>
Maciej W. Rozycki <macro@linux-mips.org>
Jon Turney [Sat, 14 Jul 2018 11:17:29 +0000 (12:17 +0100)]
Fix Cygwin compilation after target_ops C++ conversion.
After f6ac5f3d "Convert struct target_ops to C++", we need to explicitly use
the global namespace when calling ::close() from windows_nat_target methods,
as that object has a close() method.
gdb/ChangeLog:
2018-07-14 Jon Turney <jon.turney@dronecode.org.uk>
* windows-nat.c (windows_nat_target::create_inferior): Update to
call close() in global namespace.
Tom Tromey [Thu, 3 May 2018 22:36:21 +0000 (16:36 -0600)]
Make psymbols and psymtabs independent of the program space
This patch finally makes partial symbols and partial symtabs
independent of the program space.
Specifically:
It changes add_psymbol_to_list to accept a section index, and changes
the psymbol readers to pass this. At the same time it removes the
code to add the objfile's section offset to the psymbol.
It adds an objfile argument to the psymtab textlow and texthigh
accessors and changes some code to use the raw variants instead.
It removes the "relocate" method from struct quick_symbol_functions,
as it is no longer needed any more.
It changes partial_symbol::address so that the relevant offset is now
applied at the point of use.
gdb/ChangeLog
2018-07-26 Tom Tromey <tom@tromey.com>
Tom Tromey [Thu, 3 May 2018 22:36:20 +0000 (16:36 -0600)]
Add validity bits for psymtab high and low fields
Right now some psymtab code checks whether a psymtab's textlow or
texthigh fields are valid by comparing against 0.
I imagine this is mildly wrong in the current environment, but once
psymtabs are relocated dynamically, it will no longer be correct,
because it will be much more normal to see a psymtab with a textlow of
zero -- this will just mean it appears at the start of the text
section.
This patch introduces validity bits to handle this situation more
nicely, and changes users of the code to follow.
gdb/ChangeLog
2018-07-26 Tom Tromey <tromey@redhat.com>
* dbxread.c (end_psymtab): Use text_high_valid and
text_low_valid.
* mdebugread.c (parse_partial_symbols): Use text_low_valid.
(psymtab_to_symtab_1): Use text_high_valid and text_low_valid.
* psympriv.h (struct partial_symtab) <m_text_low, m_text_high>:
Update comment.
<text_low_valid, text_high_valid>: New fields.
<set_text_low, set_text_high>: Update.
* xcoffread.c (scan_xcoff_symtab): Use text_low_valid.
Tom Tromey [Thu, 3 May 2018 22:36:19 +0000 (16:36 -0600)]
Introduce accessors for psymtab high and low fields
This introduces accessors for the partial symbol table textlow and
texthigh fields. This lets us later arrange to relocate these values
at their point of use.
I did this conversion by renaming the fields. I didn't rename the
fields back afterward, thinking that on the off chance that someone
has a patch touching this area, then a merge would helpfully break
their compile.
I looked at making the fields private, but this interferes with the
memset in allocate_psymtab, and I didn't want to chase this down.
This conversion can be done later if need be.
gdb/ChangeLog
2018-07-26 Tom Tromey <tom@tromey.com>
Tom Tromey [Thu, 3 May 2018 22:36:18 +0000 (16:36 -0600)]
Introduce partial_symbol::address
This introduces a partial_symbol::address method. This method takes
an objfile argument. This is necessary so that we can later relocate
a partial symbol at its point of use. It also adds an accessor to
compute the unrelocated value; and a method to be used for setting the
field.
Note that the new method doesn't actually perform any relocation yet.
That will come in a subsequent patch. However, the comments are
written to reflect the intended, rather than the temporary, semantics.
gdb/ChangeLog
2018-07-26 Tom Tromey <tromey@redhat.com>
It has the same rationale: namely, that we're going to change the code
to apply psymbol offsets at runtime. This will be done by adding an
argument to the SYMBOL_VALUE_ADDRESS macro -- but since we can't
convert all the symbol types at once, we need a new approach.
Because gdb now is in C++, this patch changes partial_symbol to
inherit from general_symbol_info, rather than renaming the field.
This simplifies code in some places.
Also, as noted before, these macros implement a kind of "phony
polymorphism" that is not actually useful in practice; so this patch
removes the macros in favor of simply referring directly to members.
In a few cases -- obj_section in this patch and the symbol address in
the future -- methods will be used instead.
Note that this removes the blanket memset from add_psymbol_to_bcache.
This hasn't really been needed since bcache was modified to allow
holes in objects and since psymtab took advantage of that. This
deletion was required due to changing partial_symbol to derive from
general_symbol_info.
gdb/ChangeLog
2018-07-26 Tom Tromey <tom@tromey.com>
Tom Tromey [Thu, 3 May 2018 22:36:16 +0000 (16:36 -0600)]
Remove dead code in end_psymtab
I noticed that there is a bit of dead code in end_psymtab.
This deletes it.
Normally I would investigate a fix for the code. However, considering
that the code has been this way a long time (since the first import to
sourceware) and considering that dbxread.c is not as important any
more, I think it's safe to just consider that there's no bug.
gdb/ChangeLog
2018-07-26 Tom Tromey <tromey@redhat.com>
Alex Chadwick [Mon, 23 Jul 2018 23:51:44 +0000 (09:21 +0930)]
PowerPC Improve support for Gekko & Broadway
This is a relatively straightforward patch to improve support for the
IBM Gekko and IBM Broadway processors. Broadway is functionally
equivalent to the IBM 750CL, while Gekko's functionality is a subset
of theirs. The patch simplifies this reality and adds -mgekko and
-mbroadway as aliases for -m750cl. I didn't feel it was worth wasting
a PPC_OPCODE_* bit to differentiate Gekko. The patch adds a number of
simplified mnemonics for special purpose register access. Notably,
Broadway adds 4 additional IBAT and DBAT registers but these are not
assigned sequential SPR numbers.
gas/
* config/tc-ppc.c (md_show_usage): Add -mgekko and -mbroadway.
* doc/as.texi (Target PowerPC options): Add -mgekko and -mbroadway.
* doc/c-ppc.texi (PowerPC-Opts): Likewise.
* testsuite/gas/ppc/broadway.d,
* testsuite/gas/ppc/broadway.s: New test for broadway.
* testsuite/gas/ppc/ppc.exp: Run new test.
include/
* opcode/ppc.h (PPC_OPCODE_750): Adjust comment.
opcodes/
* ppc-dis.c (ppc_opts): Add -mgekko and -mbroadway.
(powerpc_init_dialect): Handle bfd_mach_ppc_750.
* ppc-opc.c (insert_sprbat, extract_sprbat): New functions to
support disjointed BAT.
(powerpc_operands): Allow extra bit in SPRBAT_MASK. Add SPRGQR.
(XSPRGQR_MASK, GEKKO, BROADWAY): Define.
(powerpc_opcodes): Add 750cl extended mnemonics for spr access.
Andrew Burgess [Fri, 13 Jul 2018 11:01:16 +0000 (12:01 +0100)]
gdb: Add switch to disable DWARF stack unwinders
Add a maintenance command to disable the DWARF stack unwinders.
Normal users would not need this feature, but it is useful to allow
extended testing of fallback stack unwinding strategies, for example,
prologue scanners.
This is a partial implementation of the idea discussed in pr gdb/8434,
which talks about a generic ability to disable any frame unwinder.
Being able to arbitrarily disable any frame unwinder would be a more
complex patch, and I was unsure how useful such a feature would really
be, however, I can see (and have) a real need to disable DWARF
unwinders. That's why this patch only targets that specific set of
unwinders.
If in the future we find ourselves adding more switches to disable
different unwinders, then we should probably move to a more generic
solution, and remove this patch.
gdb/ChangeLog:
* dwarf2-frame-tailcall.c (tailcall_frame_sniffer): Exit early if
DWARF unwinders are disabled.
* dwarf2-frame.c: Add dwarf2read.h include.
(dwarf2_frame_sniffer): Exit early if DWARF unwinders are
disabled.
(dwarf2_frame_unwinders_enabled_p): Define.
(show_dwarf_unwinders_enabled_p): New function.
(_initialize_dwarf2_frame): Register switch to control DWARF
unwinder use.
* dwarf2-frame.h (dwarf2_frame_unwinders_enabled_p): Declare.
* dwarf2read.c (set_dwarf_cmdlist): Remove static keyword.
(show_dwarf_cmdlist): Remove static keyword.
* dwarf2read.h (set_dwarf_cmdlist): Declare.
(show_dwarf_cmdlist): Declare.
* NEWS: Document new feature.
gdb/doc/ChangeLog:
* gdb.texinfo (Maintenance Commands): Add description of
maintenance command to control dwarf unwinders.
gdb/testsuite/ChangeLog:
* gdb.base/maint.exp: Add check that dwarf unwinders control flag
is visible.
Alan Modra [Thu, 26 Jul 2018 02:41:11 +0000 (12:11 +0930)]
Implement PowerPC64 .localentry for value 1
This adds support for ".localentry 1", a new st_other
STO_PPC64_LOCAL_MASK encoding that signifies a function with a single
entry point like ".localentry 0", but unlike a ".localentry 0"
function does not preserve r2.
include/
* elf/ppc64.h: Specify byte offset to local entry for values
of two to six in STO_PPC64_LOCAL_MASK. Clarify r2 return
value for such functions when entering via global entry point.
Specify meaning of a value of one in STO_PPC64_LOCAL_MASK.
bfd/
* elf64-ppc.c (ppc64_elf_size_stubs): Use a ppc_stub_long_branch_r2off
for calls to symbols with STO_PPC64_LOCAL_MASK bits set to 1.
gas/
* config/tc-ppc.c (ppc_elf_localentry): Allow .localentry values
of 1 and 7 to directly set value into STO_PPC64_LOCAL_MASK bits.
ld/testsuite/
* ld-powerpc/elfv2.s: Add .localentry f5,1 testcase.
* ld-powerpc/elfv2exe.d: Update.
* ld-powerpc/elfv2so.d: Update.
Tom de Vries [Tue, 3 Jul 2018 15:08:42 +0000 (17:08 +0200)]
[gdb/breakpoints] Fix sigsegv in info prog at exec catchpoint
With the test-case contained in this patch and compiled for debug we run into
a segfault with trunk gdb:
...
$ gdb catch-follow-exec -batch -ex "catch exec" \
-ex "set follow-exec-mode new" -ex "run" -ex "info prog"
Catchpoint 1 (exec)
process xxx is executing new program: /usr/bin/ls
[New inferior 2 (process 0)]
[New process xxx]
Thread 2.1 "ls" hit Catchpoint 1 (exec'd /usr/bin/ls), in _start () from
/lib64/ld-linux-x86-64.so.2
Segmentation fault (core dumped)
...
The patch fixes the segfault by returning an error in info_program_command
if get_last_target_status returns minus_one_ptid.
The test-case is non-standard, because the standard approach runs into
PR23368, a problem with gdb going to the background.
H.J. Lu [Wed, 25 Jul 2018 22:28:07 +0000 (15:28 -0700)]
x86: Expand Broadcast to 3 bits
Expand Broadcast to 3 bits so that the number of bytes to broadcast
can be computed as 1 << (Broadcast - 1). Use it to simplify x86
assembler.
gas/
* config/tc-i386.c (Broadcast_Operation): Add bytes.
(build_evex_prefix): Use i.broadcast->bytes.
(match_broadcast_size): New function.
(check_VecOperands): Use the broadcast field to compute the
number of bytes to broadcast directly. Set i.broadcast->bytes.
Use match_broadcast_size.
opcodes/
* i386-gen.c (adjust_broadcast_modifier): New function.
(process_i386_opcode_modifier): Add an argument for operands.
Adjust the Broadcast value based on operands.
(output_i386_opcode): Pass operand_types to
process_i386_opcode_modifier.
(process_i386_opcodes): Pass NULL as operands to
process_i386_opcode_modifier.
* i386-opc.h (BYTE_BROADCAST): New.
(WORD_BROADCAST): Likewise.
(DWORD_BROADCAST): Likewise.
(QWORD_BROADCAST): Likewise.
(i386_opcode_modifier): Expand broadcast to 3 bits.
* i386-tbl.h: Regenerated.
Tom de Vries [Wed, 18 Jul 2018 16:33:07 +0000 (18:33 +0200)]
[gdb/symtab] Warn about unresolved DW_AT_upper_bound/DW_AT_count
This patch generates a warning if DW_AT_upper_bound or DW_AT_count is defined,
but can't be translated. This is triggered for current gcc in lto mode for
vla test-cases.
Build and reg-tested on x86_64-linux.
2018-07-26 Tom de Vries <tdevries@suse.de>
* dwarf2read.c (read_subrange_type): Warn if DW_AT_upper_bound or
DW_AT_count can't be translated to a dynamic prop.
Tom de Vries [Fri, 20 Jul 2018 14:41:00 +0000 (16:41 +0200)]
[gdb/exp] Fix exception when printing optimized out vla
When compiling vla-optimized-out.c with -O3 and a recent gcc, and trying to
print the vla a in f1, we run into this gdb exception:
...
Cannot find matching parameter at DW_TAG_call_site 0x4003be at main
...
This is a regression introduced by 42dc7699a2 "[gdb/exp] Fix printing of type
of optimized out vla".
This patch fixes the regression by wrapping the ctx.eval call in
dwarf2_locexpr_baton_eval in try/catch, similar to what is done in
dwarf2_evaluate_loc_desc_full.
Build and reg-tested on x86_64-linux.
2018-07-25 Tom de Vries <tdevries@suse.de>
* dwarf2loc.c (dwarf2_locexpr_baton_eval): Wrap ctx.eval call in
try/catch.
* gdb.base/vla-optimized-out-o3.exp: New file. Reuse
vla-optimized-out.c.
Documentation for .arch and .cpu directives currently says that it
accepts the same name as -march/-mcpu command-line options respectively.
However it only accept the architecture/CPU part of those options: it
does not accept specifying an extension which is done via
.arch_extension. This patch clarifies that the extension is not
accepted.
2018-07-25 Thomas Preud'homme <thomas.preudhomme@linaro.org>
gas/
* doc/c-arm.texi (.arch directive): Clarify that name must not include
an extension.
(.cpu directive): Likewise.
Nick Clifton [Wed, 25 Jul 2018 09:56:45 +0000 (10:56 +0100)]
Fix potential memory leaks in some of the binutils source files.
* rdcoff.c (parse_coff_struct_type): Free fields array upon early
exit.
(parse_coff_enum_type): Free names and vals arrays upon early
exit.
* rddbg.c (read_section_stabs_debugging_info): Free shandle and
strings and stabs arrays upon early exit.
* readelf.c (get_32bit_section_headers): Free shdrs structure upon
early exit.
(get_64bit_section_headers): Likewise.
(get_32bit_elf_symbols): Generate an error if multiple symbol
table index sections are associated with the same symbol section.
(get_64bit_elf_symbols): Likewise.
(process_dynamic_section): Generate an error if there are multiple
dynamic symbol table sections, multiple dynamic string tables or
multiple dynamic symbol information sections.
Alan Modra [Wed, 25 Jul 2018 05:54:55 +0000 (15:24 +0930)]
Enhance powerpc ld -r --relax
One of the ill effects of ld -r is to mash together sections. That
can result in reduced icache performance at runtime due to unexpected
movement of code. Another problem is that sections can become too
large to link on targets that have limited relative addressing. ld -r
--relax attempts to overcome the large section problem for branches by
inserting trampolines, but the powerpc support added lots of
unnecessary trampolines. This patch trims them somewhat.
bfd/
* elf32-ppc.c (ppc_elf_relax_section): Ignore common or undef locals.
Avoid trashing toff with added when used as a symbol index.
Ignore R_PPC_PLTREL24 addends in unused example code. Avoid
creating unnecessary fixups when relocatable.
ld/
* testsuite/ld-powerpc/big.s: New file.
* testsuite/ld-powerpc/relaxrl.d: New test.
* testsuite/ld-powerpc/powerpc.exp: Run new test.
* testsuite/ld-powerpc/relaxr.d: Adjust.
Keith Seitz [Tue, 24 Jul 2018 19:48:58 +0000 (12:48 -0700)]
Set CU language before processing any DIEs (symtab/23010 et al)
This patch is another attempt at really fixing the multitude of assertions
being seen where symbols of one language are being added to symbol lists of
another language.
In this specific case, the backtrace command (thread apply all bt full) that
is looking for the compunit containing the PC of the thread. That calls
get_prev_frame several times. This function calls (eventually)
dwarf2_frame_prev_register. That eventually ends up calling
find_pc_compunit_symtab.
In this function (find_pc_sect_compunit_symtab actually), we loop over all
compunits, calling the "quick" function dw2_find_pc_sect_compunit_symtab.
That function calls dw2_instantiate_symtab to read in all the CU's symbols.
Now the fun begins.
dw2_do_instantiate_symtab queues the per_cu for reading, using a default
"pretend" language of language_minimal with the expectation that this will
be set later.
The DIEs of this (only queued) CU are then processed.
The first DIE is DW_TAG_compile_unit. That's handled by read_file_scope.
(Nearly) The first thing read_file_scope does is:
get_scope_pc_bounds (die, &lowpc, &highpc, cu);
This function loops over the children of the current DIE (a compile_unit),
looking for bounds. The first such child is a subprogram, and we attempt to
get its bounds. We use dwarf2_attr to get at DW_AT_high_pc.
This subprogram has DW_AT_specification set, so dwarf_attr (via
follow_die_ref/follow_die_offset) will follow that, but follow_die_offset
*also* attempts to load the containing CU for the spec DIE. That spec DIE
lives inside a CU that is a partial_unit and has no language attribute. So
it simply inherits the language from the CU that elicited the read. [That
all happens in follow_die_offset.]
The original CU's language is still language_minimal -- we haven't gotten to
the line in read_file_scope that actually sets the language yet!
And that is the cause of these problems. The call to prepare_one_comp_unit
needs to be the *first* thing that is done when reading a CU so that the
CU's language can be recorded (and inherited by any referenced
partial_units).
Since a test reproducer for this has been so elusive, this patch also adds a
wrapper function around add_symbol_to_list which asserts when adding a
symbol of one language to a list containing symbols of a different language.
gdb/ChangeLog:
2017-07-24 Keith Seitz <keiths@redhat.com>
PR symtab/23010
* dwarf2read.c (dw2_add_symbol_to_list): New function.
(fixup_go_packaging, new_symbol): Use dw2_add_symbol_to_list
instead of add_symbol_to_list.
(read_file_scope): Call prepare_one_comp_unit before reading
any other DIEs.
Tom Tromey [Sun, 22 Jul 2018 15:34:42 +0000 (09:34 -0600)]
Remove some unnecessary declarations and configury
configure checks for declarations of free, malloc, and realloc; but
the results are only used in a single spot: utils.c. I think these
checks are long since obsolete, so this patch removes them.
Grepping the entire tree for these HAVE_DECL_ symbols, the only uses
of possible interest to gdb come from bfd/sysdep.h; but this is not
(nor should be) included by gdb. (And furthermore I think the code
there is probably also obsolete.)
gdb/ChangeLog
2018-07-24 Tom Tromey <tom@tromey.com>
* utils.c (malloc, realloc, free): Don't declare.
* configure, config.in: Rebuild.
* configure.ac: Don't check for declarations of free, malloc, or
realloc.
Jan Beulich [Tue, 24 Jul 2018 07:46:27 +0000 (09:46 +0200)]
x86-64: correct AVX512F vcvtsi2s{d,s} handling
Just like for their AVX counterparts and CVTSI2S{D,S}, a memory source
here is ambiguous and hence
- in source files should be qualified with a suitable suffix or operand
size specifier (not doing so is an error in Intel mode, and will gain
a diagnostic in AT&T mode in the future),
- in disassembly should be properly suffixed (the Intel operand size
specifiers were emitted correctly already).
Max Filippov [Fri, 20 Jul 2018 04:00:29 +0000 (21:00 -0700)]
xtensa: ld: add tests for static linkage relaxation
ld/
2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
* testsuite/ld-xtensa/relax-static-defs.s: New file.
* testsuite/ld-xtensa/relax-static-local-pie.d: New file.
* testsuite/ld-xtensa/relax-static-local-shared.d: New file.
* testsuite/ld-xtensa/relax-static-local.s: New file.
* testsuite/ld-xtensa/relax-static-pie.d: New file.
* testsuite/ld-xtensa/relax-static-shared.d: New file.
* testsuite/ld-xtensa/relax-static.s: New file.
* testsuite/ld-xtensa/relax-undef-weak-local-pie.d: New file.
* testsuite/ld-xtensa/relax-undef-weak-local-shared.d: New file.
* testsuite/ld-xtensa/relax-undef-weak-local.s: New file.
* testsuite/ld-xtensa/relax-undef-weak-pie.d: New file.
* testsuite/ld-xtensa/relax-undef-weak-shared.d: New file.
* testsuite/ld-xtensa/relax-undef-weak.s: New file.
* testsuite/ld-xtensa/xtensa.exp: New file.
The function elf_xtensa_finish_dynamic_sections checks that sizes of
sections .rela.dyn and .rela.plt match number of corresponding relocation
records, but the check is only done when .rela.plt is non-empty, so, e.g.
it is never run for the static PIE.
Rearrange the test so that .rela.dyn and .rela.plt are checked always.
bfd/
2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
* elf32-xtensa.c (elf_xtensa_finish_dynamic_sections): Move
relocation sections consistency check to always check both
.rela.dyn and .rela.plt when they exist. Rearrange variable
definition and assignment places.
Max Filippov [Sun, 22 Jul 2018 20:52:28 +0000 (13:52 -0700)]
xtensa: fix relaxation of undefined weak references in shared objects
The change c451bb34ae8b ("xtensa: don't emit dynamic relocation for weak
undefined symbol") didn't properly handle shrinking of relocation
sections due to coalescing of references to a dynamic undefined weak
symbol in a shared object, which resulted in the following assertion
failure in ld when linking uClibc-ng libthread_db for xtensa:
BFD (GNU Binutils) 2.31 internal error, aborting at elf32-xtensa.c:3269
in elf_xtensa_finish_dynamic_sections
Shrink dynamic relocations section for dynamic undefined weak symbols
when linking a shared object.
bfd/
2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
* elf32-xtensa.c (shrink_dynamic_reloc_sections): Shrink dynamic
relocations section for dynamic undefined weak symbols when
linking a shared object.
[ARC] Fix case-sensitivity for extension instructions.
In ARC assembler, we accept case insensitive mnemonics, but this was
not the case for extension instruction, fix it and add a test.
gas/
Claudiu Zissulescu <claziss@synopsys.com>
* config/tc-arc.c (tokenize_extinsn): Convert to lower case the
name of extension instructions.
* testsuite/gas/arc/textinsn_case.d: New file.
* testsuite/gas/arc/textinsn_case.s: Likewise.
Andreas Krebbel [Mon, 23 Jul 2018 08:29:37 +0000 (10:29 +0200)]
S/390: Suppress string diagnostics for pre-release GCC
Building for S/390 currently fails when using a GCC 8.1 pre-release
version like 8.0.1 (as it is used by F28). Fixed with the attached patch.
bfd/ChangeLog:
2018-07-23 Andreas Krebbel <krebbel@linux.ibm.com>
* elf32-s390.c (elf_s390_write_core_note): Make GCC version 8.0 to
be covered by the check as well.
* elf64-s390.c (elf_s390_write_core_note): Likewise.
Alan Modra [Mon, 23 Jul 2018 03:01:18 +0000 (12:31 +0930)]
PowerPC64 fails reloc-discard test
PowerPC64 fails here due to emitting a warning about discarded dynamic
relocations. That's a good thing, since accidentally discarding
dynamic relocations will likely result in a non-working binary.
* testsuite/ld-elf/reloc-discard-warn.d: New.
* testsuite/ld-elf/reloc-discard.d: Skip test on PowerPC64.
Tom Tromey [Mon, 9 Jul 2018 03:05:41 +0000 (21:05 -0600)]
Add -Wunused-variable to warnings.m4
This adds -Wunused-variable to the build. This required a special
check in configure in order to work around a bug in GCC 4.9. Simon
ound the correct test to use, so I've added him to the ChangeLog.
gdb/ChangeLog
2018-07-22 Simon Marchi <simon.marchi@polymtl.ca>
Tom Tromey <tom@tromey.com>
* warning.m4 (AM_GDB_WARNINGS): Add -Wunused-variable and special
test for it.
* configure: Rebuild.
gdb/gdbserver/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
Tom Tromey [Mon, 9 Jul 2018 02:31:58 +0000 (20:31 -0600)]
Conditionally define xmltarget_${name} variable in regdat.sh
This changes regdat.sh to emit the xmltarget_${name} variable inside
the #ifndef IN_PROCESS_AGENT block. This avoids a -Wunused-variable
warning for some builds. Thanks to Pedro for investigating this one.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
Tom Tromey [Sun, 8 Jul 2018 18:09:22 +0000 (12:09 -0600)]
Remove unused variables from gdbserver
This removes a few unused variables from gdbserver.
The x86-tdesc.h change is a bit unusual for this series. This file
was not defining the multiple-include guard symbol, so I've added that
here. Also, it is hard to determine when i386_expedite_regs will be
needed, so this patch simply marks it ATTRIBUTE_UNUSED.
gdb/gdbserver/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
Tom Tromey [Sun, 8 Jul 2018 18:18:19 +0000 (12:18 -0600)]
Remove unused declaration from value.c
This removes an unused declaration from value_fetch_lazy_bitfield.
Because it is not completely clear if the check_typedef call is needed
somewhere beneath this function, this is broken out into a separate
patch.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
Tom Tromey [Sun, 8 Jul 2018 18:18:09 +0000 (12:18 -0600)]
Pass the correct argument to the observer in reread_symbols
This is actually a patch I found via another route. Joel had asked me
to write a test, but I still have not found the time to do this.
Meanwhile, -Wunused-variable also found this error.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
* symfile.c (reread_symbols): Notify iter, not objfile.
Tom Tromey [Sun, 8 Jul 2018 18:17:51 +0000 (12:17 -0600)]
Fix ravenscar-thread.c to use arch_ops
The change to turn target ops into methods accidentally introduced a
bug in ravenscar-thread.c, changing some calls that were using
"arch_ops" to use the target beneath.
This patch changes ravenscar-thread.c to use these variables where
appropriate.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
* ravenscar-thread.c (ravenscar_thread_target::store_registers):
Use arch_ops.
(ravenscar_thread_target::prepare_to_store): Likewise.
Tom Tromey [Sun, 8 Jul 2018 18:17:23 +0000 (12:17 -0600)]
Remove declarations from m32c-tdep.c
This removes some unused declarations from m32c-tdep.c. Initially I
had thought that this entire code block was dead, but Simon pointed
out that it is not; so this patch simply removes some declarations.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
Tom Tromey [Sun, 8 Jul 2018 18:16:00 +0000 (12:16 -0600)]
Use a previously unused variable in bfin-tdep.c
This changes bfin_push_dummy_call to use the result of check_typedef.
Calling check_typedef for effect was probably ok as well, but this
seemed a little nicer.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
* bfin-tdep.c (bfin_push_dummy_call): Use arg_type, not
value_type.
Tom Tromey [Sun, 8 Jul 2018 18:39:36 +0000 (12:39 -0600)]
Unused variable fixes related to conditional compilation
This patch fixes various unused variable warnings that are related to
conditional compilation. In these cases, either the variable is now
protected by the same #if as its uses, or the declaration is simply
lowered into the conditionally-compiled block.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
Eric Botcazou [Sat, 21 Jul 2018 13:00:40 +0000 (15:00 +0200)]
Initialize GOT slot for local symbol in non-PIC link.
On ARM/VxWorks 7, the R_ARM_TARGET2 relocation used for exception handling
is R_ARM_GOT_PREL; moreover in Ada you can define local exceptions. In this
case, you may end up with a GOT relocation against a local symbol in a
non-PIC link and the ARM linker leaves the GOT slot uninitialized, unlike
for example the i386 or the SPARC linkers in the same situation.
bfd/
* elf32-arm.c (elf32_arm_final_link_relocate) <R_ARM_GOT32>: Small
cleanup for the case of a global symbol that binds locally. Also
install a value in the GOT slot in the case of a local symbol in
a non-PIC link.
Simon Marchi [Sat, 21 Jul 2018 02:19:04 +0000 (22:19 -0400)]
Rename some frame unwind function parameters
I am currently working with these functions, and though this renaming
could help to reason about the code. Some functions take a frame and
will return the value associated to that frame, others will return the
value associated to the previous frame. Those usually conveniently
contain "unwind" in their name, but naming the variable next_frame
instead of frame helps remembering which frame we are dealing with.
I also included a little typo fix at the top of frame.h.
H.J. Lu [Fri, 20 Jul 2018 16:52:35 +0000 (09:52 -0700)]
ld: Discard .rel.* and .rela.* sections
On many targets, like x86, .rel.dyn/.rela.dyn section is combined from
different .rel/.rela sections by -z combreloc. To discard dynamic
relocation section, we need to discard .rel.* and .rela.* sections
instead of .rel.dyn and .rela.dyn sections.
Note: This test fails for targets which issue a warning when dynamic
section is discarded.
* testsuite/ld-elf/reloc-discard.ld: Discard .rel.* and .rela.*
sections instead of .rel.dyn and .rela.dyn sections.
H.J. Lu [Fri, 20 Jul 2018 16:18:47 +0000 (09:18 -0700)]
x86: Add a GNU_PROPERTY_X86_ISA_1_USED note if needed
When -z separate-code, which is enabled by default for Linux/x86, is
used to create executable, ld won't place any data in the code-only
PT_LOAD segment. If there are no data sections placed before the
code-only PT_LOAD segment, the program headers won't be mapped into
any PT_LOAD segment. When the executable tries to access it (based
on the program header address passed in AT_PHDR), it will lead to
segfault. This patch inserts a GNU_PROPERTY_X86_ISA_1_USED note if
there may be no data sections before the text section so that the
first PT_LOAD segment won't be code-only and will contain the program
header.
Testcases are adjusted to either pass "-z noseparate-code" to ld or
discard the .note.gnu.property section. A Linux/x86 run-time test is
added.
bfd/
PR ld/23428
* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): If the
separate code program header is needed, make sure that the first
read-only PT_LOAD segment has no code by adding a
GNU_PROPERTY_X86_ISA_1_USED note.
ld/
PR ld/23428
* testsuite/ld-elf/linux-x86.S: New file.
* testsuite/ld-elf/linux-x86.exp: Likewise.
* testsuite/ld-elf/pr23428.c: Likewise.
* testsuite/ld-elf/sec64k.exp: Pass "-z noseparate-code" to ld
for Linux/x86 targets.
* testsuite/ld-i386/abs-iamcu.d: Likewise.
* testsuite/ld-i386/abs.d: Likewise.
* testsuite/ld-i386/pr12718.d: Likewise.
* testsuite/ld-i386/pr12921.d: Likewise.
* testsuite/ld-x86-64/abs-k1om.d: Likewise.
* testsuite/ld-x86-64/abs-l1om.d: Likewise.
* testsuite/ld-x86-64/abs.d: Likewise.
* testsuite/ld-x86-64/pr12718.d: Likewise.
* testsuite/ld-x86-64/pr12921.d: Likewise.
* testsuite/ld-linkonce/zeroeh.ld: Discard .note.gnu.property
section.
* testsuite/ld-scripts/print-memory-usage.t: Likewise.
* testsuite/ld-scripts/size-2.t: Likewise.
* testsuite/lib/ld-lib.exp (run_ld_link_exec_tests): Use ld
to create executable if language is "asm".
projects / thirdparty / binutils-gdb.git / log
