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gcc/c/
* Make-lang.in (c.tags): Also include libcpp TAGS.
gcc/cp/
* Make-lang.in (c++.tags): Also include libcpp TAGS.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229504 138bc75d-0d04-0410-961f-82ee72b054a4
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include/
Roland McGrath <roland@gnu.org>
PR other/63758
* environ.h: New file.
libiberty/
Roland McGrath <roland@gnu.org>
Iain Sandoe <iain@codesourcery.com>
PR other/63758
* pex-unix.c: Obtain the environment interface from settings in environ.h
rather than in-line code. Update copyright date.
* setenv.c: Likewise.
* xmalloc.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@228942 138bc75d-0d04-0410-961f-82ee72b054a4
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gcc/
* builtins.def (BUILT_IN_ABORT): Add transaction_pure attribute.
gcc/c-family/
* c-common.c (c_common_reswords): Add C++ TM TS keywords.
(c_common_attribute_table): Add transaction_safe_dynamic.
transaction_safe now affects type identity.
(handle_tm_attribute): Handle transaction_safe_dynamic.
* c-common.h (enum rid): Add RID_ATOMIC_NOEXCEPT,
RID_ATOMIC_CANCEL, RID_SYNCHRONIZED.
(OBJC_IS_CXX_KEYWORD): Add RID_SYNCHRONIZED.
(D_TRANSMEM): New.
* c-cppbuiltin.c (c_cpp_builtins): Define __cpp_transactional_memory.
* c-pretty-print.c (pp_c_attributes_display): Don't print
transaction_safe in C++.
gcc/c/
* c-parser.c (c_lex_one_token): Handle @synchronized.
* c-decl.c (match_builtin_function_types): A declaration of a built-in
can change whether the function is transaction_safe.
gcc/cp/
* cp-tree.h (struct cp_declarator): Add tx_qualifier field.
(BCS_NORMAL, BCS_TRANSACTION): New enumerators.
* lex.c (init_reswords): Limit TM kewords to -fgnu-tm.
* parser.c (cp_lexer_get_preprocessor_token): Fix @synchronized.
(make_call_declarator): Take tx_qualifier.
(cp_parser_tx_qualifier_opt): New.
(cp_parser_lambda_declarator_opt): Use it.
(cp_parser_direct_declarator): Likewise.
(cp_parser_statement): Handle atomic_noexcept, atomic_cancel.
(cp_parser_compound_statement): Change in_try parameter to bcs_flags.
(cp_parser_std_attribute): Map optimize_for_synchronized to
transaction_callable.
(cp_parser_transaction): Take the token. Handle atomic_noexcept.
* lambda.c (maybe_add_lambda_conv_op): Handle transaction-safety.
* call.c (enum conversion_kind): Add ck_tsafe.
(standard_conversion): Handle transaction-safety conversion.
(convert_like_real, resolve_address_of_overloaded_function): Likewise.
(check_methods): Diagnose transaction_safe_dynamic on non-virtual
function.
(look_for_tm_attr_overrides): Don't inherit transaction_safe_dynamic.
* cvt.c (tx_safe_fn_type_p, tx_unsafe_fn_variant)
(can_convert_tx_safety): New.
* typeck.c (composite_pointer_type): Handle transaction-safety.
* name-lookup.h (enum scope_kind): Add sk_transaction.
* name-lookup.c (begin_scope): Handle it.
* semantics.c (begin_compound_stmt): Pass it.
* decl.c (check_previous_goto_1): Check it.
(struct named_label_entry): Add in_transaction_scope.
(poplevel_named_label_1): Set it.
(check_goto): Check it.
(duplicate_decls): A specialization can be transaction_safe
independently of its template.
(grokdeclarator): Handle tx-qualifier.
* rtti.c (ptr_initializer): Handle transaction-safe.
* search.c (check_final_overrider): Check transaction_safe_dynamic.
Don't check transaction_safe.
* mangle.c (write_function_type): Mangle transaction_safe here.
(write_CV_qualifiers_for_type): Not here.
(write_type): Preserve transaction_safe when stripping attributes.
* error.c (dump_type_suffix): Print transaction_safe.
libiberty/
* cp-demangle.c (d_cv_qualifiers): Dx means transaction_safe.
(cplus_demangle_type): Let d_cv_qualifiers handle it.
(d_dump, d_make_comp, has_return_type, d_encoding)
(d_count_templates_scopes, d_print_comp_inner)
(d_print_mod_list, d_print_mod, d_print_function_type)
(is_ctor_or_dtor): Handle DEMANGLE_COMPONENT_TRANSACTION_SAFE.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@228462 138bc75d-0d04-0410-961f-82ee72b054a4
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libiberty/
* cp-demangle.c (d_dump): Fix syntax error.
(d_identifier): Adjust type of len to match d_source_name.
(d_expression_1): Fix out-of-bounds access. Check code variable for
NULL before dereferencing it.
(d_find_pack): Do not recurse for FIXED_TYPE, DEFAULT_ARG and NUMBER.
(d_print_comp_inner): Add NULL pointer check.
* cp-demangle.h (d_peek_next_char): Define as inline function when
CHECK_DEMANGLER is defined.
(d_advance): Likewise.
* testsuite/demangle-expected: Add new testcases.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@225727 138bc75d-0d04-0410-961f-82ee72b054a4
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C++" warning
* getruntime.c (RUSAGE_SELF): Define if not already defined.
(get_runtime): Use RUSAGE_SELF as argument 1 of getrusage call.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@225614 138bc75d-0d04-0410-961f-82ee72b054a4
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C++" warning
* getruntime.c (get_run_time) [__USE_GNU]: Use RUSAGE_SELF as
argument 1 of getrusage call.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@225534 138bc75d-0d04-0410-961f-82ee72b054a4
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ARMv8.2 adds 16-bit floating point operations as an optional extension
to the ARMv8 FP support. This patch adds the new FP16 instructions,
making them available when the architecture extension +fp+fp16 is
specified.
The instructions added are:
- Comparisons and conditionals: FCMP, FCCMPE, FCMP, FCMPE and FCSEL.
- Arithmetic: FABS, FNEG, FSQRT, FMUL, FDIV, FADD, FSUB, FMADD, FMSUB,
FNMADD and FNMSUB.
- Rounding: FRINTN, FRINTP, FRINTM, FRINTZ, FRINTA, FRINTX and FRINTI.
- Conversions: SCVTF (fixed-point), SCVTF (integer), UCVTF (fixed-point)
UCVTF (integer), FCVTZS (fixed-point), FCVTZS (integer), FCVTZU
(fixed-point), FCVTZU (integer), FCVTNS, FCVTNU, FCVTAS, FCVTAU,
FCVTPS, FCVTPU, FCVTMS and FCVTMU.
- Scalar FMOV: immediate, general and register
gas/testsuite/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* gas/aarch64/float-fp16.d: New.
* gas/aarch64/float-fp16.s: New.
opcodes/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Regenerate.
* aarch64-opc-2.c: Regenerate.
* aarch64-tbl.h (QL_FIX2FP_H, QL_FP2FIX_H): New.
(QL_INT2FP_H, QL_FP2INT_H): New.
(QL_FP2_H, QL_FP3_H, QL_FP4_H): New
(QL_DST_H): New.
(QL_FCCMP_H): New.
(aarch64_opcode_table): Add 16-bit variants of scvt, ucvtf,
fcvtzs, fcvtzu, fcvtns, fcvtnu, scvtf, ucvtf, fcvtas, fcvtau,
fmov, fcvtpos, fcvtpu, fcvtms, fcvtmu, fcvtzs, fcvtzu, fccmp,
fccmpe, fcmp, fcmpe, fabs, fneg, fsqrt, frintn, frintp, frintm,
frintz, frinta, frintx, frinti, fmul, fdiv, fadd, fsub, fmax,
fmin, fmaxnm, fminnm, fnmul, fmadd, fmsub, fnmadd, fnmsub and
fcsel.
Change-Id: Ie6d40bd1b215a9bc024e12ba75e52afbe1675eb7
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ARMv8.2 adds 16-bit floating point operations as an optional
extension. This patch adjusts the utility function expand_fp_imm to
support 16-bit values.
The function is intended to convert an 8-bit immediate representing a
floating point value to a representation that can be passed to
fprintf. Because of the limited use of the results, the only change made
to the function is to treat a request for a 16-bit float as a request
for a 32-bit float.
opcodes/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-opc.c (half_conv_t): New.
(expand_fp_imm): Replace is_dp flag with the parameter size to
specify the number of bytes for the required expansion. Treat
a 16-bit expansion like a 32-bit expansion. Add check for an
unsupported size request. Update comment.
(aarch64_print_operand): Update to support 16-bit floating point
values. Update for changes to expand_fp_imm.
Change-Id: I1ae3df3864be375d71925197ab03397ed1ad2d15
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ARMv8.2 adds 16-bit floating point operations as an optional extension
to the ARMv8 FP support. This patch set adds support for the 16-bit FP
instructions to binutils, enabling the instructions when both +fp and
+fp16 architecture extensions are enabled.
The patches in this series:
- Add a feature macro for use by the encoding/decoding mechanism.
- Adjust a utility function, used when disassembling, to support 16-bit
floating point values.
- Add the new scalar floating-point instructions.
This patch adds the feature macro FP_F16 to the AArch64 encoding/decoding
mechanism, enabling it when both +fp and +fp16 are selected.
opcodes/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-tbl.h (aarch64_feature_fp_f16): New.
(FP_F16): New.
Change-Id: Ie370e43e3d77a7d54b4416b4be901b363a37f3d5
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This patch adds the alias REV64 <Rd>, <Rs> as an alias for REV <Rd>,
<Rs>. However, REV is still the preferred form for the instruction.
gas/testsuite/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* gas/aarch64/alias-2.d: Add tests for REV.
* gas/aarch64/alias-2.s: Likewise.
opcodes/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Regenerate.
* aarch64-opc-2.c: Regenerate.
* aarch64-tbl.h (aarchr64_opcode_table): Update "rev", add
"rev64".
Change-Id: I331567c8d3618ba9fec1673c6e0b5977222dde61
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ARMv8.2 adds two new instructions: BFC as an alias for BFM and REV64 as
an alias for REV. This patch set adds support for these to binutils,
enabled when the -march=armv8.2-a is given. It depends on the support
for an instruction being its preferred form which was added in an
earlier patch.
This patch adds the alias BFC <Rd>, #<imm>, #<width> as the preferred
form for BFM when the source is a zero register and the conditions for
using the BFI form are met (in other words, BFC is the preferred form
for BFI <Rd>, <Rs>, #<imm>, #<width> when the <Rs> is a zero register).
gas/testsuite/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* gas/aarch64/alias-2.d: New.
* gas/aarch64/alias-2.s: New.
include/opcode/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64.h (aarch64_op): Add OP_BFC.
opcodes/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-asm-2.c: Regenerate.
* aarch64-asm.c (convert_bfc_to_bfm): New.
(convert_to_real): Add case for OP_BFC.
* aarch64-dis-2.c: Regenerate.
* aarch64-dis.c: (convert_bfm_to_bfc): New.
(convert_to_alias): Add case for OP_BFC.
* aarch64-opc-2.c: Regenerate.
* aarch64-opc.c (operand_general_constraint_met_p): Weaken assert
to allow width operand in three-operand instructions.
* aarch64-tbl.h (QL_BF1): New.
(aarch64_feature_v8_2): New.
(ARMV8_2): New.
(aarch64_opcode_table): Add "bfc".
Change-Id: I6efe318b2538ba11f0caece7c6d70957441c872b
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Fixes in C++:
/home/emaisin/src/binutils-gdb/gdb/remote.c: In function ‘void start_thread(gdb_xml_parser*, const gdb_xml_element*, void*, VEC_gdb_xml_value_s*)’:
/home/emaisin/src/binutils-gdb/gdb/remote.c:2975:59: error: invalid conversion from ‘void*’ to ‘const char*’ [-fpermissive]
item.name = attr != NULL ? (char *) xstrdup (attr->value) : NULL;
^
In file included from /home/emaisin/src/binutils-gdb/gdb/common/common-defs.h:64:0,
from /home/emaisin/src/binutils-gdb/gdb/defs.h:28,
from /home/emaisin/src/binutils-gdb/gdb/remote.c:22:
/home/emaisin/src/binutils-gdb/gdb/../include/libiberty.h:323:14: error: initializing argument 1 of ‘char* xstrdup(const char*)’ [-fpermissive]
extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
^
make[2]: *** [remote.o] Error 1
gdb/ChangeLog:
* remote.c (start_thread): Add cast.
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Although the AArch64 backend supports aliased instructions, the aliasing
forms are always preferred over the real instruction. This makes it
awkward to handle instructions which have aliases but which are their
own preferred form.
This patch includes the instruction being aliased in the list of
alternatives which is searched when considering which form to use.
opcodes/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Regenerate.
* aarch64-dis.c: Weaken assert.
* aarch64-gen.c: Include the instruction in the list of its
possible aliases.
Change-Id: I1f23eb25fccef76a64d3d732d58761bd25fad94e
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This patch fixes the GDB internal error on AArch64 when running
watchpoint-fork.exp
top?bt 15
internal_error (file=file@entry=0x79d558 "../../binutils-gdb/gdb/linux-nat.c", line=line@entry=4866, fmt=0x793b20 "%s: Assertion `%s' failed.")
at ../../binutils-gdb/gdb/common/errors.c:51
#1 0x0000000000495bc4 in linux_nat_thread_address_space (t=<optimized out>, ptid=<error reading variable: Cannot access memory at address 0x1302>)
at ../../binutils-gdb/gdb/linux-nat.c:4866
#2 0x00000000005db2c8 in delegate_thread_address_space (self=<optimized out>, arg1=<error reading variable: Cannot access memory at address 0x1302>)
at ../../binutils-gdb/gdb/target-delegates.c:2447
#3 0x00000000005e8c7c in target_thread_address_space (ptid=<error reading variable: Cannot access memory at address 0x1302>)
at ../../binutils-gdb/gdb/target.c:2727
#4 0x000000000054eef8 in get_thread_arch_regcache (ptid=..., gdbarch=0xad51e0) at ../../binutils-gdb/gdb/regcache.c:529
#5 0x000000000054efcc in get_thread_regcache (ptid=...) at ../../binutils-gdb/gdb/regcache.c:546
#6 0x000000000054f120 in get_thread_regcache_for_ptid (ptid=...) at ../../binutils-gdb/gdb/regcache.c:560
#7 0x00000000004a2278 in aarch64_point_is_aligned (is_watchpoint=0, addr=34168, len=2) at ../../binutils-gdb/gdb/nat/aarch64-linux-hw-point.c:122
#8 0x00000000004a2e68 in aarch64_handle_breakpoint (type=hw_execute, addr=34168, len=2, is_insert=0, state=0xae8880)
at ../../binutils-gdb/gdb/nat/aarch64-linux-hw-point.c:465
#9 0x000000000048edf0 in aarch64_linux_remove_hw_breakpoint (self=<optimized out>, gdbarch=<optimized out>, bp_tgt=<optimized out>)
at ../../binutils-gdb/gdb/aarch64-linux-nat.c:657
#10 0x00000000005da8dc in delegate_remove_hw_breakpoint (self=<optimized out>, arg1=<optimized out>, arg2=<optimized out>)
at ../../binutils-gdb/gdb/target-delegates.c:492
#11 0x0000000000536a24 in bkpt_remove_location (bl=<optimized out>) at ../../binutils-gdb/gdb/breakpoint.c:13065
#12 0x000000000053351c in remove_breakpoint_1 (bl=0xb3fe70, is=is@entry=mark_inserted) at ../../binutils-gdb/gdb/breakpoint.c:4026
#13 0x000000000053ccc0 in detach_breakpoints (ptid=...) at ../../binutils-gdb/gdb/breakpoint.c:3930
#14 0x00000000005a3ac0 in handle_inferior_event_1 (ecs=0x7ffffff048) at ../../binutils-gdb/gdb/infrun.c:5042
After the fork, GDB will physically remove the breakpoints from the child
process (in frame #14), but at that time, GDB doesn't create an inferior
yet for child, but inferior_ptid is set to child's ptid (in frame #13).
In aarch64_point_is_aligned, we'll get the regcache of current_lwp_ptid
to determine if the current process is 32-bit or 64-bit, so the inferior
can't be found, and the internal error is caused.
I don't find a better fix other than not checking alignment on removing
breakpoint.
gdb:
2015-11-27 Yao Qi <yao.qi@linaro.org>
* nat/aarch64-linux-hw-point.c (aarch64_dr_state_remove_one_point):
Don't assert on alignment.
(aarch64_handle_breakpoint): Only check alignment when IS_INSERT
is true.
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Both ARM and AArch64 have defined some SIMD data types in arm_neon.h,
but we don't have a test case for passing them and returning them in
inferior call. This test also covers passing and returning
homogeneous short vector aggregate (defined by AArch64 ABI document)
in inferior call too.
gdb/testsuite:
* gdb.arch/arm-neon.exp: New.
* gdb.arch/arm-neon.c: New.
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AArch64 AAPCS defined HFA (homogeneous floating-point aggregate)
and HVF (homogeneous short vector aggregate), bug GDB only handles the
former. In the AAPCS doc, both types are treated exactly the same
in terms of alignment and passing locations (on registers or stack).
This patch is to extend is_hfa to handle both HFA and HVA.
gdb:
2015-11-27 Yao Qi <yao.qi@linaro.org>
* aarch64-tdep.c (is_hfa): Rename to ...
(is_hfa_or_hva): ... this. Handle vector type. All callers
updated.
(aarch64_extract_return_value): Update debugging message.
(aarch64_store_return_value): Likewise.
(aarch64_return_in_memory): Update comments.
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As defined in AArch64 AAPCS, short vectors are passed through V
registers, and its maximum alignment is 16-byte. This patch is
to reflect these rules in GDB. This patch fixes some fails in
gdb.base/gnu_vector.exp.
gdb:
2015-11-27 Yao Qi <yao.qi@linaro.org>
* aarch64-tdep.c (aarch64_type_align): For vector type, return
its length, but with the maximum of 16 bytes.
(is_hfa): Return zero for vector type.
(aarch64_push_dummy_call): Handle short vectors.
(aarch64_extract_return_value): Likewise.
(aarch64_store_return_value): Likewise.
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gdb/testsuite:
2015-11-27 Yao Qi <yao.qi@linaro.org>
* gdb.cp/annota2.exp: Rewrite the pattern using multi_line.
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gdb.cp/annota2.exp
Hi,
I see one fail on aarch64-linux testing,
FAIL: gdb.cp/annota2.exp: watch triggered on a.x (timeout)
because GDB prints two frames-invalid annotation but the test expects
only one.
next^M
^M
^Z^Zpost-prompt^M
^M
^Z^Zstarting^M
^M
^Z^Zframes-invalid^M
^M
^Z^Zframes-invalid^M
^M
Note I also see the fail on Debian-s390x-m64 too.
https://sourceware.org/ml/gdb-testers/2015-q4/msg07291.html
The test shouldn't only expect one frames-invalid annotation, because
there can be multiple times of stop/resume before the user visible
stop. Ulrich did something similar before
https://www.sourceware.org/ml/gdb-patches/2009-06/msg00118.html
This patch only changes ${frames_invalid} to \(${frames_invalid}\)*
in the regexp pattern.
The patch below fixes the fail on aarch64-linux.
gdb/testsuite:
2015-11-27 Yao Qi <yao.qi@linaro.org>
* gdb.cp/annota2.exp: Allow multiple occurrences of the
frames-invalid annotation.
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Variable frames_invalid was defined, but wasn't used much. This patch
is to replace the literals in the regexp with ${frames_invalid}.
gdb/testsuite:
2015-11-27 Yao Qi <yao.qi@linaro.org>
* gdb.cp/annota2.exp: Use ${frames_invalid}.
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ARMv8.2 adds a new system register id_aa64mmfr2_el1. This patch adds
support for the register to binutils, making it available when
-march=armv8.2-a is selected.
opcodes/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-opc.c (aarch64_sys_regs): Add "id_aa64mmfr2_el1".
(aarch64_sys_reg_supported_p): Add ARMv8.2 system register
feature test.
gas/testsuite/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* gas/aarch64/sysreg-2.d: New.
* gas/aarch64/sysreg-2.s: New.
Change-Id: I767f18a60e2bd70ce74c89f6abfe07afdc9e601f
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ARMv8.2 adds optional support for 16-bit operations to the FP and
Adv.SIMD instructions. This patch adds a feature macro for this support
with a new command line option "+fp16" to enable/disable it.
Although the command line option is added as an architecture extension,
it only affects instructions available with when +fp or +simd is
enabled. If +fp16 is specified then it will also enable +fp.
There are currently no FP16 instructions implemented in binutils, this
patch is to enable subsequent work on supporting the extension.
gas/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* config/tc-aarch64.c (aarch64_features): Add "fp16".
* doc/c-aarch64.texi (Architecture Extensions): Add "fp16".
include/opcode/
2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
* aarch64.h (AARCH64_FEATURE_F16): New.
(AARCH64_ARCH_V8_2): Add AARCH64_FEATURE_F16 to ARMv8.2
features.
Change-Id: Id2021e0513946e16d0935c2a5b9605574cdff95a
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Par Olsson was the original author of the fix, so change the name in the
ChangeLog to give him the credit.
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I couldn't find a test that verified the thread name functionality, so I
created a new one.
A target board can define gdb,no_thread_names if it doesn't support thread
names and wants to skip the tests that uses them.
This test has been made with Linux in mind. Not all platforms use
pthread_setname_np to set the thread name, but some #ifdefs can be added
later in order to support other platforms.
Tested on x86-64 Ubuntu 14.04, native and remote.
gdb/testsuite/ChangeLog:
* gdb.threads/names.exp: New file.
* gdb.threads/names.c: New file.
* README: Mention gdb,no_thread_names.
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This patch adds support for thread names in the remote protocol, and
updates gdb/gdbserver to use it. The information is added to the XML
description sent in response to the qXfer:threads:read packet.
gdb/ChangeLog:
* linux-nat.c (linux_nat_thread_name): Replace implementation by call
to linux_proc_tid_get_name.
* nat/linux-procfs.c (linux_proc_tid_get_name): New function,
implementation inspired by linux_nat_thread_name.
* nat/linux-procfs.h (linux_proc_tid_get_name): New declaration.
* remote.c (struct private_thread_info) <name>: New field.
(free_private_thread_info): Free name field.
(remote_thread_name): New function.
(thread_item_t) <name>: New field.
(clear_threads_listing_context): Free name field.
(start_thread): Get name xml attribute.
(thread_attributes): Add "name" attribute.
(remote_update_thread_list): Copy name field.
(init_remote_ops): Assign remote_thread_name callback.
* target.h (target_thread_name): Update comment.
* NEWS: Mention remote thread name support.
gdb/gdbserver/ChangeLog:
* linux-low.c (linux_target_ops): Use linux_proc_tid_get_name.
* server.c (handle_qxfer_threads_worker): Refactor to include thread
name in reply.
* target.h (struct target_ops) <thread_name>: New field.
(target_thread_name): New macro.
gdb/doc/ChangeLog:
* gdb.texinfo (Thread List Format): Mention thread names.
|
|
Since this code path returns a string owned by the target (we don't know how
it's allocated, could be a static read-only string), it's safer if we return
a constant string. If, for some reasons, the caller wishes to modify the
string, it should make itself a copy.
gdb/ChangeLog:
* linux-nat.c (linux_nat_thread_name): Constify return value.
* target.h (struct target_ops) <to_thread_name>: Likewise.
(target_thread_name): Likewise.
* target.c (target_thread_name): Likewise.
* target-delegates.c (debug_thread_name): Regenerate.
* python/py-infthread.c (thpy_get_name): Constify local variables.
* thread.c (print_thread_info): Likewise.
(thread_find_command): Likewise.
|
|
If GDB has been configured without libipt support, i.e. HAVE_LIBIPT is
undefined, and is running on a system that supports Intel(R) Processor Trace,
GDB will run into an internal error when trying to decode the trace.
(gdb) record btrace
(gdb) s
usage (name=0x7fffffffe954 "fib-64")
at src/fib.c:12
12 fprintf(stderr, "usage: %s <num>\n", name);
(gdb) info record
Active record target: record-btrace
Recording format: Intel(R) Processor Trace.
Buffer size: 16kB.
gdb/btrace.c:971: internal-error: Unexpected branch trace format.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
This requires a system with Linux kernel 4.1 or later running on a 5th
Generation Intel Core processor or later.
The issue is documented as PR 19297.
When trying to enable branch tracing, in addition to checking the target
support for the requested branch tracing format, also check whether GDB
supports. it.
gdb/
* btrace.c (btrace_enable): Check whether HAVE_LIBIPT is defined.
testsuite/
* lib/gdb.exp (skip_btrace_pt_tests): Check for a "GDB does not
support" error.
|
|
|
|
ChangeLog:
* zlib: Update to zlib 1.2.8 with local changes merged in.
|
|
gold/
PR gold/19291
* object.cc (Sized_relobj_file::write_local_symbols): If relocatable,
subtract section address from symbol value.
|
|
As done in a27e685f for bfd ld.
* powerpc.cc (Output_data_got_powerpc::Output_data_got_powerpc): Align
to 256 byte boundary.
|
|
|
|
2015-11-24 Christophe Monat <christophe.monat@st.com>
* config/tc-arm.c (move_or_literal_pool): Do not transform ldr
ri,=imm into movs when ri is a high register in T1.
2015-11-24 Christophe Monat <christophe.monat@st.com>
* gas/arm/thumb2_ldr_immediate_armv6t2.s: Added high register
tests.
* gas/arm/thumb2_ldr_immediate_armv6t2.d: Accounted for new test
cases.
* gas/arm/thumb2_ldr_immediate_highregs_armv6t2.s: New.
* gas/arm/thumb2_ldr_immediate_highregs_armv6t2.d: New.
|
|
gdb/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
* NEWS: Mention that a few "info" commands now list the
corresponding items in ascending ID order.
|
|
Before:
(gdb) info display
Auto-display expressions now in effect:
Num Enb Expression
3: y 1
2: y 1
1: y 1
After:
(gdb) info display
Auto-display expressions now in effect:
Num Enb Expression
1: y 1
2: y 1
3: y 1
gdb/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
PR 17539
* printcmd.c (display_command): Append new display at the end of
the list.
gdb/testsuite/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
PR 17539
* gdb.base/display.exp: Expect displays to be sorted in ascending
order. Use multi_line.
* gdb.base/solib-display.exp: Likewise.
|
|
Before:
(gdb) info checkpoints
3 process 29132 at 0x4008ad, file foo.c, line 81
2 process 29131 at 0x4008ad, file foo.c, line 81
1 process 29130 at 0x4008ad, file foo.c, line 81
* 0 Thread 0x7ffff7fc5740 (LWP 29128) (main process) at 0x4008ad, file foo.c, line 81
After:
(gdb) info checkpoints
* 0 Thread 0x7ffff7fc5740 (LWP 29128) (main process) at 0x4008ad, file foo.c, line 81
1 process 29130 at 0x4008ad, file foo.c, line 81
2 process 29131 at 0x4008ad, file foo.c, line 81
3 process 29132 at 0x4008ad, file foo.c, line 81
gdb/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
PR 17539
* printcmd.c (display_command): Append new display at the end of
the list.
gdb/testsuite/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
PR 17539
* gdb.base/display.exp: Expect displays to be sorted in ascending
order. Use multi_line.
* gdb.base/solib-display.exp: Likewise.
|
|
Before:
(gdb) info threads
Id Target Id Frame
3 Thread 0x7ffff77c3700 (LWP 29035) callme () at foo.c:30
2 Thread 0x7ffff7fc4700 (LWP 29034) 0x000000000040087b in child_function_2 (arg=0x0) at foo.c:60
* 1 Thread 0x7ffff7fc5740 (LWP 29030) 0x0000003b37209237 in pthread_join (threadid=140737353893632, thread_return=0x0) at pthread_join.c:92
After:
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fc5740 (LWP 29030) 0x0000003b37209237 in pthread_join (threadid=140737353893632, thread_return=0x0) at pthread_join.c:92
2 Thread 0x7ffff7fc4700 (LWP 29034) 0x000000000040087b in child_function_2 (arg=0x0) at foo.c:60
3 Thread 0x7ffff77c3700 (LWP 29035) callme () at foo.c:30
gdb/doc/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
PR 17539
* gdb.texinfo (Inferiors and Programs): Adjust "maint info
program-spaces" example to ascending order listing.
(Threads): Adjust "info threads" example to ascending order
listing.
(Forks): Adjust "info inferiors" example to ascending order
listing.
gdb/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
PR 17539
* inferior.c (add_inferior_silent): Append the new inferior to the
end of the list.
* progspace.c (add_program_space): Append the new pspace to the
end of the list.
* thread.c (new_thread): Append the new thread to the end of the
list.
gdb/testsuite/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
PR 17539
* gdb.base/foll-exec-mode.exp: Adjust to GDB listing inferiors and
threads in ascending order.
* gdb.base/foll-fork.exp: Likewise.
* gdb.base/foll-vfork.exp: Likewise.
* gdb.base/multi-forks.exp: Likewise.
* gdb.mi/mi-nonstop.exp: Likewise.
* gdb.mi/mi-nsintrall.exp: Likewise.
* gdb.multi/base.exp: Likewise.
* gdb.multi/multi-arch.exp: Likewise.
* gdb.python/py-inferior.exp: Likewise.
* gdb.threads/break-while-running.exp: Likewise.
* gdb.threads/execl.exp: Likewise.
* gdb.threads/gcore-thread.exp: Likewise.
* gdb.threads/info-threads-cur-sal.exp: Likewise.
* gdb.threads/kill.exp: Likewise.
* gdb.threads/linux-dp.exp: Likewise.
* gdb.threads/multiple-step-overs.exp: Likewise.
* gdb.threads/next-bp-other-thread.exp: Likewise.
* gdb.threads/step-bg-decr-pc-switch-thread.exp: Likewise.
* gdb.threads/step-over-lands-on-breakpoint.exp: Likewise.
* gdb.threads/step-over-trips-on-watchpoint.exp: Likewise.
* gdb.threads/thread-find.exp: Likewise.
* gdb.threads/tls.exp: Likewise.
* lib/mi-support.exp (mi_reverse_list): Delete.
(mi_check_thread_states): No longer reverse list.
|
|
... like the kernel does.
gcore-thread.exp has a check to make sure the signalled thread is the
current thread after loading the core back, but that just works by
accident, because the signalled thread happened to be the last thread
on the thread list, and gdb currently iterates over threads in reverse
order.
So this fixes gcore-thread.exp once we start walking threads in
ascending number.
gdb/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
* linux-tdep.c (find_stop_signal): Delete.
(struct linux_corefile_thread_data) <pid>: Remove field.
(linux_corefile_thread_callback): Rename to ...
(linux_corefile_thread): ... this. Now takes a struct
linux_corefile_thread_data pointer rather than a void pointer.
Remove thread state and thread pid checks.
(linux_make_corefile_notes): Prefer dumping the signalled thread
first. Use ALL_NON_EXITED_THREADS instead of
iterate_over_threads.
|
|
Before we had:
$ cat testsuite/gdb.sum | grep "PASS" | sort | uniq -c | sort -n
...
1 PASS: gdb.python/py-inferior.exp: write str
2 PASS: gdb.python/py-inferior.exp: Get inferior list length
2 PASS: gdb.python/py-inferior.exp: py start_addr = gdb.selected_frame ().read_var ('search_buf')
2 PASS: gdb.python/py-inferior.exp: Switch to first inferior
3 PASS: gdb.python/py-inferior.exp: find mixed-sized pattern
4 PASS: gdb.python/py-inferior.exp: py length = search_buf.type.sizeof
4 PASS: gdb.python/py-inferior.exp: py start_addr = search_buf.address
5 PASS: gdb.python/py-inferior.exp: Check inferior validity
$
gdb/testsuite/ChangeLog:
2015-11-24 Pedro Alves <palves@redhat.com>
* gdb.python/py-inferior.exp: Use with_test_prefix. Consistently
use lowercase.
|
|
There are a number of failures for the arm-wince-pe targets, most are due
to the test being invalid for the target.
This patch adjusts the invalid tests to either make them valid or to set
them as skipped for arm-wince-pe targets.
gas/testsuite
2015-11-24 Matthew Wahab <matthew.wahab@arm.com>
* gas/arm/armv7e-m+fpv5-d16.d: Skip test for *-*-pe, *-wince-* and
for *-*-coff targets.
* gas/arm/armv7e-m+fpv5-sp-d16.d: Likewise.
* gas/arm/blx-bl-convert.d: Likewise.
* gas/arm/ldst-offset0.d: Likewise.
* gas/arm/thumb2_ldr_immediate_armv6t2.d: Likewise.
* gas/arm/armv8-a+pan.s: Adjust test to make it
valid for non-ELF targets.
* gas/arm/wince.d: Add assembler option "-mccs".
* gas/arm/wince_inst.d: Update expected output.
Change-Id: I33a356e97eace3f8e1d581a46ec6413898105bef
|
|
sim * configure.tgt: Add aarch64 entry.
* configure: Regenerate.
* sim/aarch64/configure.ac: New configure template.
* sim/aarch64/aclocal.m4: Generate.
* sim/aarch64/config.in: Generate.
* sim/aarch64/configure: Generate.
* sim/aarch64/cpustate.c: New file - functions for accessing
AArch64 registers.
* sim/aarch64/cpustate.h: New header.
* sim/aarch64/decode.h: New header.
* sim/aarch64/interp.c: New file - interface between GDB and
simulator.
* sim/aarch64/Makefile.in: New makefile template.
* sim/aarch64/memory.c: New file - functions for simulating
aarch64 memory accesses.
* sim/aarch64/memory.h: New header.
* sim/aarch64/sim-main.h: New header.
* sim/aarch64/simulator.c: New file - aarch64 simulator
functions.
* sim/aarch64/simulator.h: New header.
include/gdb * sim-aarch64.h: New file.
sim/test * configure: Regenerate.
* sim/aarch64: New directory.
|
|
|
|
When trying to save fast tracepoints to file, gdb returns internal failure:
gdb/breakpoint.c:13446: internal-error: unhandled tracepoint type 27
A problem internal to GDB has been detected, further debugging may prove unreliable.
And no file including the fast tracepoints definition is created.
The patch also extends save-trace.exp to test saving tracepoint with a
fast tracepoint in there. Note that because this test doesn't actually
inserts the tracepoints in the program, we can run it with targets that
don't actually support fast tracepoints (or tracepoints at all).
gdb/ChangeLog:
* breakpoint.c (tracepoint_print_recreate): Fix logic error
if -> else if.
gdb/testsuite/ChangeLog:
* gdb.trace/actions.c: Include trace-common.h.
(main): Add a location for a fast tracepoint.
* gdb.trace/save-trace.exp: Set a fast tracepoint in addition to
the normal tracepoints.
(gdb_verify_tracepoints): Adjust number of expected tracepoints.
|
|
Some code is duplicated, to run the test twice with absolute and
relative paths, so I factored it out in a few procs. It uses
with_test_prefix to differentiate between test runs.
I replaced usages of "save-tracepoints" with "save tracepoint", since
the former is deprecated.
I also removed the "10.x", as it doesn't make much sense anymore. It
isn't used in general in the testsuite, and I don't think it's really
useful.
gdb/testsuite/ChangeLog:
* save-trace.exp: Factor out code to these...
(gdb_save_tracepoints): New.
(gdb_load_tracepoints): New.
(do_save_load_test): New.
|
|
The comment for the code in question says:
/* If the minimal symbol has a zero size, save it
but keep scanning backwards looking for one with
a non-zero size. A zero size may mean that the
symbol isn't an object or function (e.g. a
label), or it may just mean that the size was not
specified. */
As written, the code in question will only scan past the first symbol
of zero size. My change fixes the implementation to match the
comment.
Having this correct is important when the compiler generates several
local labels that are left in place by the linker. (I've been told
that the linker should eliminate these symbols, but I know of one
architecture for which this is not happening.)
I've created a test case called asmlabel.c. It's pretty simple:
main (int argc, char **argv)
{
asm ("L0:");
v = 0;
asm ("L1:");
v = 1; /* set L1 breakpoint here */
asm ("L2:");
v = 2; /* set L2 breakpoint here */
return 0;
}
If breakpoints are placed on the lines indicated by the comments,
this is the behavior of GDB built without my patch:
(gdb) continue
Continuing.
Breakpoint 2, L1 () at asmlabel.c:26
26 v = 1; /* set L1 breakpoint here */
Note that L1 appears as the function instead of main. This is not
what we want to happen. With my patch in place, we see the desired
behavior instead:
(gdb) continue
Continuing.
Breakpoint 2, main (argc=1, argv=0x7fffffffdb88) at asmlabel.c:26
26 v = 1; /* set L1 breakpoint here */
gdb/ChangeLog:
* minsyms.c (lookup_minimal_symbol_by_pc_section_1): Scan backwards
over all zero-sized symbols.
gdb/testsuite/ChangeLog:
* gdb.base/asmlabel.exp: New test.
* gdb.base/asmlabel.c: New test case.
|
|
One of our users reported an internal error using the "bt full"
command. In their situation, reproducing involved the following
scenario:
(gdb) frame 1
(gdb) bt full
#0 0xf7783430 in __kernel_vsyscall ()
No symbol table info available.
#1 0xf5550aeb in waitpid () at ../sysdeps/unix/syscall-template.S:81
No locals.
[...]
#6 0x0fe83139 in xxxx (arg=...)
[...some locals printed, and then...]
<S17b> =
[...]/dwarf2loc.c:364: internal-error: dwarf_expr_frame_base: Assertion
`framefunc != NULL' failed.
As shown above, the error happens while GDB is trying to print the value
of <S17b>, which is a local string internally generated by the compiler.
For that, it finds that the array lives in memory, and therefore tries
to create a struct value for it via:
case DWARF_VALUE_MEMORY:
{
CORE_ADDR address = dwarf_expr_fetch_address (ctx, 0);
[...]
retval = value_at_lazy (type, address + byte_offset);
Unfortunately for us, TYPE happens to be an array whose bounds
are dynamic. More precisely, the bounds of our arrays are described
in the debugging info as being...
<4><2c1985e>: Abbrev Number: 33 (DW_TAG_subrange_type)
<2c1985f> DW_AT_type : <0x2c1989c>
<2c19863> DW_AT_lower_bound : <0x2c19835>
<2c19867> DW_AT_upper_bound : <0x2c19841>
... which are references to a pair of local variables. For instance,
the lower bound is a reference to the following DIE
<3><2c19835>: Abbrev Number: 32 (DW_TAG_variable)
<2c19836> DW_AT_name : [...]
<2c1983a> DW_AT_type : <0x2c198b4>
<2c1983e> DW_AT_artificial : 1
<2c1983e> DW_AT_location : 2 byte block: 91 58 (DW_OP_fbreg: -40)
As a result of the above, value_at_lazy indirectly triggers
a resolution of TYPE (via value_from_contents_and_address),
which means a resolution of TYPE's bounds, and as seen in
the DW_AT_location attribute above for our bounds, computing
the bound's location requires the frame (its location expression
uses DW_OP_fbreg).
Unfortunately for us, value_at_lazy does not get passed a frame,
we've lost the relevant frame when we try to resolve the array's
bounds. Instead, resolve_dynamic_range gets calls dwarf2_evaluate_property
with NULL as the frame:
static struct type *
resolve_dynamic_range (struct type *dyn_range_type,
struct property_addr_info *addr_stack)
{
[...]
if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value))
^^^^
... which then handles this by using the selected frame instead:
if (frame == NULL && has_stack_frames ())
frame = get_selected_frame (NULL);
In our case, the selected frame happens to be frame #1, which is
a frame where we have a minimal amount of debugging info, and in
particular, no debug info for the function itself. And because of that,
when we try to determine the frame's base...
static void
dwarf_expr_frame_base (void *baton, const gdb_byte **start,
size_t * length)
{
struct dwarf_expr_baton *debaton = (struct dwarf_expr_baton *) baton;
const struct block *bl = get_frame_block (debaton->frame, NULL);
[...]
framefunc = block_linkage_function (bl);
... framefunc ends up being NULL, which triggers the assert
in that same function:
gdb_assert (framefunc != NULL);
This patches avoids the issue by temporarily setting the selected_frame
before printing the locals of each frames.
This patch also adds a small testcase, which reproduces the same
issue, but with a slightly different outcome:
(gdb) bt full
#0 0x000000000040049a in opaque_routine ()
No symbol table info available.
#1 0x0000000000400532 in main () at wrong_frame_bt_full-main.c:20
my_table_size = 3
my_table = <error reading variable my_table (frame address is not available.)>
With this patch, the output becomes:
(gdb) bt full
[...]
my_table = {0, 1, 2}
gdb/ChangeLog:
* stack.c (print_frame_local_vars): Temporarily set the selected
frame to FRAME while printing the frame's local variables.
gdb/testsuite/ChangeLog:
* gdb.base/wrong_frame_bt_full-main.c: New file.
* gdb.base/wrong_frame_bt_full-opaque.c: New file.
* gdb.base/wrong_frame_bt_full.exp: New file.
|
|
This crash is observable by debugging a threaded program on LynxOS.
On the GDB side, this is what we would see:
% gdb q
(gdb) target remote machine:4444
(gdb) break q.adb:6
(gdb) cont
[gdb hits breakpoint]
(gdb) cont
Remote connection closed <<<--- expected: [Inferior 1 (Remote target) exited normally]
On the gdbserver side, which was launched as usual:
% gdbserver --once :4444 q
Segmentation fault (core dumped)
Ooops!
The problem happens while GDB is trying to handle the thread termination
event of the thread that hit the breakpoint. It started happening after
the following change was made:
commit 96e7a1eb6d09fda9e22e112e35e7d0085a8f4fd0
Date: Fri Oct 16 11:08:38 2015 -0400
Subject: gdbserver: Reset current_thread when the thread is removed.
Reset current_thread and make sure 'remove_process' is used
after all associated threads have been removed first.
More precisely:
. GDBserver receives the execution-resume order;
. lynx-low resumes it succesfully, and then relies on lynx_wait_1
to wait for the next event;
. We quickly receive one, which lynx_wait_1 analyzes to be
a "thread exit" event, and therefore does...
case SIGTHREADEXIT:
remove_thread (find_thread_ptid (new_ptid));
lynx_continue (new_ptid);
goto retry;
=> remove_thread causes current_thread to be set to NULL...
(that's the recent change mentioned above)
=> ... which causes problems during lynx_continue, because
it calls lynx_resume, which calls regcache_invalidate,
which unfortunately assumes that CURRENT_THREAD is not NULL:
void
regcache_invalidate (void)
{
/* Only update the threads of the current process. */
SEGV!--> int pid = ptid_get_pid (current_thread->entry.id);
find_inferior (&all_threads, regcache_invalidate_one, &pid);
}
Since the problem at hand is caused by trying to figure out which
inferior to reset the regcache for, and since lynx_resume actually
had that info, this patch fixes the problem by introducing a new
routine called regcache_invalidate_pid, which invalidates the cache
of the given pid; and then modifies lynx_resume use that new routine
rather than relying on regcache_invalidate to invalidate the regcache
of the expected inferior.
gdb/gdbserver/ChangeLog:
* regcache.h (regcache_invalidate_pid): Add declaration.
* regcache.c (regcache_invalidate_pid): New function, extracted
from regcache_invalidate.
(regcache_invalidate): Reimplement using regcache_invalidate_pid.
Add trivial documentation comment.
* lynx-low.c: Use regcache_invalidate_pid instead of
regcache_invalidate.
|
|
We noticed the following hang trying to run a program where one
of the subroutines we built without debugging info (opaque_routine):
$ gdb my_program
(gdb) break opaque_routine
(gdb) run
[...hangs...]
The problem comes from the fact that, at the breakpoint's address,
we have the following code:
=> 0x0000000000401994 <+4>: pop %rbp
At some point after hitting the breakpoint and stopping, GDB calls
amd64_windows_frame_decode_epilogue, which then gets stuck in the
following infinite loop:
| /* We don't care about the instruction deallocating the frame:
| if it hasn't been executed, the pc is still in the body,
| if it has been executed, the following epilog decoding will work. */
|
| /* First decode:
| - pop reg [41 58-5f] or [58-5f]. */
|
| while (1)
| {
| /* Read opcode. */
| if (target_read_memory (pc, &op, 1) != 0)
| return -1;
|
| if (op >= 0x40 && op <= 0x4f)
| {
| /* REX prefix. */
| rex = op;
|
| /* Read opcode. */
| if (target_read_memory (pc + 1, &op, 1) != 0)
| return -1;
| }
| else
| rex = 0;
|
| if (op >= 0x58 && op <= 0x5f)
| {
| /* pop reg */
| gdb_byte reg = (op & 0x0f) | ((rex & 1) << 3);
|
| cache->prev_reg_addr[amd64_windows_w2gdb_regnum[reg]] = cur_sp;
| cur_sp += 8;
| }
| else
| break;
|
| /* Allow the user to break this loop. This shouldn't happen as the
| number of consecutive pop should be small. */
| QUIT;
| }
Nothing in that loop updates PC, and therefore, because the instruction
we stopped at is a "pop", we keep looping forever doing the same thing
over and over!
This patch fixes the issue by advancing PC to the beginning of
the next instruction if the current one is a "pop reg" instruction.
gdb/ChangeLog:
* amd64-windows-tdep.c (amd64_windows_frame_decode_epilogue):
Increment PC in while loop skipping "pop reg" instructions.
|
