Casts between 'char **' <-> 'unsigned char **' and 'char **' <-> const
char **' are actually invalid:
http://gcc.gnu.org/ml/gcc-help/2013-03/msg00118.html
In a nutshell, char (and variants) can alias anything, but pointers to
chars get no special treatment (cf. C99/N1256, 6.5/7).
Turns out older gcc's actually warn/complain on these constructs,
though newer one's don't:
http://sourceware.org/ml/gdb-patches/2013-03/msg00429.htmlhttp://sourceware.org/ml/gdb-patches/2013-03/msg00430.html
This patch fixes the cases I added last week. It also fixes one other
preexisting case in charset.c, though it seems even older gccs don't
complain of char * <-> const char * aliasing.
Tested on x86_64 Fedora 17.
gdb/
2013-03-11 Pedro Alves <palves@redhat.com>
* charset.c (convert_between_encodings): Don't cast between
different pointer to pointer types. Instead, make the 'inp' local
be of the type iconv expects.
(wchar_iterate): Don't cast between different pointer to pointer
types. Instead, use new pointer local of the type iconv expects.
* target.c (target_read_stralloc, target_fileio_read_stralloc):
Add new local of type char pointer, and use it to get a
char/string view of the byte buffer, instead of casting between
pointer to pointer types.
record-full.
Document two new record sub-commands "record instruction-history" and
"record function-call-history" and two associated set/show commands
"set record instruction-history-size" and "set record
function-call-history-size".
Add this to NEWS.
gdb/
* NEWS: Add record changes.
doc/
* gdb.texinfo (Process Record and Replay): Document record
changes.
instruction-history" command of record-btrace.
The pc prefix would appear multiple times in the branch trace disassembly,
which is more confusing than helpful.
gdb/
* record-btrace.c (btrace_insn_history): Omit the pc prefix in
the instruction history disassembly.
* disasm.c (dump_insns): Omit the pc prefix, if requested.
* disasm.h (DISASSEMBLY_OMIT_PC): New.
The target implements the new record sub-commands
"record instruction-history" and
"record function-call-history".
The target does not support reverse execution or navigation in the
recorded execution log.
gdb/
* Makefile.in (SFILES): Add record-btrace.c
(COMMON_OBS): Add record-btrace.o
* record-btrace.c: New.
* objfiles.c: Include btrace.h.
(free_objfile): call btrace_free_objfile.
This command provides a quick high-level overview over the recorded execution
log at function granularity without having to reverse-step.
gdb/
* target.c (target_call_history, target_call_history_from,
target_call_history_range): New.
* target.h (target_ops) <to_call_history, to_call_history_from,
to_call_history_range>: New fields.
(target_call_history, target_call_history_from,
target_call_history_range): New declaration.
* record.c (get_call_history_modifiers, cmd_record_call_history,
record_call_history_size): New.
(_initialize_record): Add the "record function-call-history" command.
Add "set/show record function-call-history-size" commands.
* record.h (record_print_flag): New.
between different record targets.
gdb/
* record.h (record_disconnect): New.
(record_detach): New.
(record_mourn_inferior): New.
(record_kill): New.
* record-full.c (record_disconnect, record_detach,
record_mourn_inferior, record_kill): Move to...
* record.c: ...here.
(DEBUG): New.
(record_stop): New.
(record_unpush): New.
(cmd_record_stop): Call record_stop. Replace unpush_target
call with record_unpush call.
(record_disconnect, record_detach): Assert that the target
is of record stratum. Call record_unpush, record_stop, and
DEBUG.
(record_mourn_inferior, record_kill): Assert that the target
is of record stratum. Call record_unpush and DEBUG.
gdb/
* record-full.h, record-full.c (record_memory_query): Rename
to ...
(record_full_memory_query): ...this. Update all users.
(record_arch_list_add_reg): Rename to ...
(record_full_arch_list_add_reg): ...this. Update all users.
(record_arch_list_add_mem): Rename to ...
(record_full_arch_list_add_mem): ...this. Update all users.
(record_arch_list_add_end): Rename to ...
(record_full_arch_list_add_end): ...this. Update all users.
(record_gdb_operation_disable_set): Rename to ...
(record_full_gdb_operation_disable_set): ...this.
Update all users.
EIST transition, T-states, C1E, or Adaptive Thermal Throttling (AAJ122).
This results in sporadic test fails. Disable btrace on those processors.
gdb/
* common/linux-btrace.c: Include sys/ptrace, sys/types, sys/wait.h,
and signal.h.
(linux_supports_btrace): Add kernel and
cpuid check.
(kernel_supports_btrace): New function.
(cpu_supports_btrace): New function.
(intel_supports_btrace): New function.
We define the following packets:
Qbtrace:bts enable branch tracing for the current thread
returns "OK" or "Enn"
Qbtrace:off disable branch tracing for the current thread
returns "OK" or "Enn"
qXfer:btrace:read read the full branch trace data for the current thread
gdb/
* target.h (enum target_object): Add TARGET_OBJECT_BTRACE.
* remote.c: Include btrace.h.
(struct btrace_target_info): New struct.
(remote_supports_btrace): New function.
(send_Qbtrace): New function.
(remote_enable_btrace): New function.
(remote_disable_btrace): New function.
(remote_teardown_btrace): New function.
(remote_read_btrace): New function.
(init_remote_ops): Add btrace ops.
(enum <unnamed>): Add btrace packets.
(struct protocol_feature remote_protocol_features[]): Add btrace packets.
(_initialize_remote): Add packet configuration for branch tracing.
gdbserver/
* target.h (struct target_ops): Add btrace ops.
(target_supports_btrace): New macro.
(target_enable_btrace): New macro.
(target_disable_btrace): New macro.
(target_read_btrace): New macro.
* gdbthread.h (struct thread_info): Add btrace field.
* server.c: Include btrace-common.h.
(handle_btrace_general_set): New function.
(handle_btrace_enable): New function.
(handle_btrace_disable): New function.
(handle_general_set): Call handle_btrace_general_set.
(handle_qxfer_btrace): New function.
(struct qxfer qxfer_packets[]): Add btrace entry.
* inferiors.c (remove_thread): Disable btrace.
* linux-low: Include linux-btrace.h.
(linux_low_enable_btrace): New function.
(linux_low_read_btrace): New function.
(linux_target_ops): Add btrace ops.
* configure.srv (i[34567]86-*-linux*): Add linux-btrace.o.
Add srv_linux_btrace=yes.
(x86_64-*-linux*): Add linux-btrace.o.
Add srv_linux_btrace=yes.
* configure.ac: Define HAVE_LINUX_BTRACE.
* config.in: Regenerated.
* configure: Regenerated.
Add a function to parse a btrace xml document into a vector of branch trace
blocks.
gdb/
* features/btrace.dtd: New file.
* Makefile.in (XMLFILES): Add btrace.dtd.
* btrace.h (parse_xml_btrace): New declaration.
* btrace.c: Include xml-support.h.
(parse_xml_btrace): New function.
(parse_xml_btrace_block): New function.
(block_attributes): New struct.
(btrace_attributes): New struct.
(btrace_children): New struct.
(btrace_elements): New struct.
* common/linux-ptrace.c (linux_ptrace_test_ret_to_nx): Call also kill
for CHILD, ignore PTRACE_KILL errors, move the inner block variable
kill_status to outer block.
Fix entry-values if the callee called a noreturn function.
* dwarf2-frame-tailcall.c (dwarf2_tailcall_sniffer_first): Use
get_frame_address_in_block. Add new comment.
gdb/testsuite/
Fix entry-values if the callee called a noreturn function.
* gdb.arch/amd64-tailcall-noret.S: New file.
* gdb.arch/amd64-tailcall-noret.c: New file.
* gdb.arch/amd64-tailcall-noret.exp: New file.
Fix entry-values in C++ across CUs.
* dwarf2loc.c (call_site_to_target_addr) <FIELD_LOC_KIND_PHYSNAME>: Use
lookup_minimal_symbol. Add a comment.
* dwarf2read.c
(read_call_site_scope) <is_ref_attr> <die_is_declaration>: Prefer
DW_AT_linkage_name.
gdb/testsuite/
Fix entry-values in C++ across CUs.
* gdb.arch/amd64-tailcall-cxx.exp: New file.
* gdb.arch/amd64-tailcall-cxx1.S: New file.
* gdb.arch/amd64-tailcall-cxx1.cc: New file.
* gdb.arch/amd64-tailcall-cxx2.S: New file.
* gdb.arch/amd64-tailcall-cxx2.cc: New file.
From: Pedro Alves <palves@redhat.com>
The find command's patter/buffer that is passed to the target is a
binary blob, not a string.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" findcmd.o -k 2>&1 1>/dev/null
../../src/gdb/findcmd.c: In function ‘find_command’:
../../src/gdb/findcmd.c:278:6: error: pointer targets in passing argument 3 of ‘target_search_memory’ differ in signedness [-Werror=pointer-sign]
In file included from ../../src/gdb/findcmd.c:26:0:
../../src/gdb/target.h:1582:12: note: expected ‘const gdb_byte *’ but argument is of type ‘char *’
gdb/
2013-03-08 Pedro Alves <palves@redhat.com>
* findcmd.c (put_bits): Change type of parameter to 'gdb_byte *'.
(parse_find_args, find_command): Change type of pattern buffer
locals to 'gdb_byte *'.
Hafiz Abid Qadeer <abidh@codesourcery.com>
gdb/
* NEWS: Mention set and show trace-buffer-size commands.
Mention new packet.
* target.h (struct target_ops): New method
to_set_trace_buffer_size.
(target_set_trace_buffer_size): New macro.
* target.c (update_current_target): Set up new method.
* tracepoint.c (trace_buffer_size): New global.
(start_tracing): Send it to the target.
(set_trace_buffer_size): New function.
(_initialize_tracepoint): Add new setshow for trace-buffer-size.
* remote.c (remote_set_trace_buffer_size): New function.
(_initialize_remote): Use it.
(QTBuffer:size) New remote command.
(PACKET_QTBuffer_size): New enum.
(remote_protocol_features): Add an entry for
PACKET_QTBuffer_size.
gdb/gdbserver/
* tracepoint.c (trace_buffer_size): New global.
(DEFAULT_TRACE_BUFFER_SIZE): New define.
(init_trace_buffer): Change to one-argument function. Allocate
trace buffer memory.
(handle_tracepoint_general_set): Call cmd_bigqtbuffer_size to
handle QTBuffer:size packet.
(cmd_bigqtbuffer_size): New function.
(initialize_tracepoint): Call init_trace_buffer with
DEFAULT_TRACE_BUFFER_SIZE.
* server.c (handle_query): Add QTBuffer:size in the
supported packets.
gdb/doc/
* gdb.texinfo (Starting and Stopping Trace Experiments): Document
trace-buffer-size set and show commands.
(Tracepoint Packets): Document QTBuffer:size.
(General Query Packets): Document QTBuffer:size.
gdb/testsuite/
* gdb.trace/trace-buffer-size.exp: New file.
* gdb.trace/trace-buffer-size.c: New file.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" target.o -k 2>&1 1>/dev/null
../../src/gdb/target.c: In function ‘target_read_stralloc’:
../../src/gdb/target.c:2376:3: error: pointer targets in passing argument 1 of ‘strlen’ differ in signedness [-Werror=pointer-sign]
In file included from build-gnulib/import/string.h:27:0,
from ../../src/gdb/common/gdb_string.h:24,
from ../../src/gdb/target.c:24:
/usr/include/string.h:399:15: note: expected ‘const char *’ but argument is of type ‘gdb_byte *’
...
This is about the same as the previous patch.
Functions that take or return ascii-ish string arguments usually use
char* for parameters/return. That means that at points we call into
target methods that work with binary blobs, we need casts to/from
gdb_byte*/char*. To choose which type for the variables, I usually go
based on which requires the fewer casts, and what the contents of the
variable are supposed to hold, which often gives the same answer.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* target.c (target_read_stralloc, target_fileio_read_alloc):
*Cast pointer to 'gdb_byte *' in target call.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" corefile.o -k 2>&1 1>/dev/null
../../src/gdb/corefile.c: In function ‘read_memory_string’:
../../src/gdb/corefile.c:334:7: error: pointer targets in passing argument 2 of ‘read_memory’ differ in signedness [-Werror=pointer-sign]
../../src/gdb/corefile.c:217:1: note: expected ‘gdb_byte *’ but argument is of type ‘char *’
Functions that take or return ascii-ish string arguments usually use
char* for parameters/return. That means that at points we call into
target methods that work with binary blobs, we need casts to
gdb_byte*.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* corefile.c (read_memory_string): Cast pointer to gdb_byte* in
call.
(trace_pass_command): Likewise.
* cli/cli-cmds.c: Include cli/cli-utils.h.
(source_command): Use skip-spaces.
(disassemble_command): Likewise.
* findcmd.c: Include cli/cli-utils.h.
(parse_find_args): Use skip_spaces.
* go32-nat.c: Include cli/cli-utils.h.
(go32_sldt): Use skip_spaces.
(go32_sgdt): Likewise.
(go32_sidt): Likewise.
(go32_pde): Likewise.
(go32_pte): Likewise.
(go32_pte_for_address): Likewise.
* infcmd.c: Include cli/cli-utils.h.
(registers_info): Use skip_spaces.
* linux-tdep.c (read_mapping): Use skip_spaces_const.
(linux_info_proc): Likewise.
* linux-thread-db.c: Include cli/cli-utils.h.
(info_auto_load_libthread_db): Use skip_spaces_const.
* m32r-rom.c: Include cli/cli-utils.h.
(m32r_upload_command): Use skip_spaces.
* maint.c: Include cli/cli-utils.h.
(maintenance_translate_address): Use skip_spaces.
* mi/mi-parse.c: Include cli/cli-utils.h.
(mi_parse_argv): Use skip_spaces.
(mi_parse): Likewise.
* minsyms.c: Include cli/cli-utils.h.
(msymbol_hash_iw): Use skip_spaces_const.
* objc-lang.c: Include cli/cli-utils.h.
(parse_selector): Use skip_spaces.
(parse_method): Likewise.
* python/python.c: Include cli/cli-utils.h.
(python_interactive_command)[HAVE_PYTHON]: Use skip_spaces.
(python_command)[HAVE_PYTHON]: Likewise.
(python_interactive_command)[!HAVE_PYTHON]: Likewise.
* remote-m32r-sdi.c: Include cli/cli-utils.h.
(m32r_load): Use skip_spaces.
* serial.c: Include cli/cli-utils.h.
(serial_open): Use skip_spaces_const.
* stack.c: Include cli/cli-utils.h.
(parse_frame_specification_1): Use skip_spaces_const.
* symfile.c: Include cli/cli-utils.h.
(set_ext_lang_command): Use skip_spaces.
* symtab.c: Include cli/cli-utils.h.
(rbreak_command): Use skip_spaces.
* thread.c (thread_name_command): Use skip_spaces.
* tracepoint.c (validate_actionline): Use skip_spaces.
(encode_actions_1): Likewise.
(trace_find_range_command): Likewise.
(trace_find_outside_command): Likewise.
(trace_dump_actions): Likewise.
Trimmed for brevity:
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" c-lang.o expprint.o utils.o valprint.o varobj.o -k 2>&1 1>/dev/null
../../src/gdb/c-lang.c: In function ‘parse_one_string’:
../../src/gdb/c-lang.c:540:8: error: pointer targets in passing argument 3 of ‘convert_between_encodings’ differ in signedness [-Werror=pointer-sign]
In file included from ../../src/gdb/c-lang.c:30:0:
../../src/gdb/charset.h:64:6: note: expected ‘const gdb_byte *’ but argument is of type ‘char *’
../../src/gdb/expprint.c: In function ‘print_subexp_standard’:
../../src/gdb/expprint.c:205:2: error: pointer targets in passing argument 3 of ‘current_language->la_printstr’ differ in signedness [-Werror=pointer-sign]
../../src/gdb/expprint.c:205:2: note: expected ‘const gdb_byte *’ but argument is of type ‘char *’
cc1: all warnings being treated as errors
make: *** [expprint.o] Error 1
../../src/gdb/utils.c: In function ‘host_char_to_target’:
../../src/gdb/utils.c:1474:9: error: pointer targets in passing argument 3 of ‘convert_between_encodings’ differ in signedness [-Werror=pointer-sign]
../../src/gdb/varobj.c: In function ‘value_get_print_value’:
../../src/gdb/varobj.c:2934:8: error: pointer targets in return differ in signedness [-Werror=pointer-sign]
../../src/gdb/varobj.c:2968:12: error: pointer targets in assignment differ in signedness [-Werror=pointer-sign]
../../src/gdb/varobj.c:2971:3: error: pointer targets in return differ in signedness [-Werror=pointer-sign]
cc1: all warnings being treated as errors
make: *** [varobj.o] Error 1
As with the previous patch, the encoding conversion code works with
gdb_byte arrays as the generic buffers that hold strings of any
encoding/width. This patch adds casts where appropriate.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* c-lang.c (parse_one_string): Cast argument to gdb_byte *.
* expprint.c (print_subexp_standard): Likewise.
* utils.c (host_char_to_target): Likewise.
* valprint.c (generic_emit_char, generic_printstr): Likewise.
* varobj.c (value_get_print_value): Change type of local to char*.
Cast it gdb_byte * in call to language printer.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" charset.o 2>&1 1>/dev/null
../../src/gdb/charset.c: In function ‘wchar_iterate’:
../../src/gdb/charset.c:665:13: error: pointer targets in assignment differ in signedness [-Werror=pointer-sign]
../../src/gdb/charset.c:691:13: error: pointer targets in assignment differ in signedness [-Werror=pointer-sign]
../../src/gdb/charset.c:706:12: error: pointer targets in assignment differ in signedness [-Werror=pointer-sign]
The encoding conversion code works with gdb_byte arrays as the generic
buffers that hold strings of any encoding/width. Changing the type of
this field to gdb_byte* removes the need for one cast, and makes
everything work with the same types. That's good -- WRT to strings,
"char *" is (almost) consistently throughout GDB only used for
ascii-ish strings.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* charset.c (struct wchar_iterator) <input>: Change type to 'const
gdb_byte *'.
(make_wchar_iterator): Remove cast to char*.
(wchar_iterate): Change type of local.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" regcache.o 2>&1 1>/dev/null
../../src/gdb/regcache.c: In function ‘regcache_xmalloc_1’:
../../src/gdb/regcache.c:228:2: error: pointer targets in assignment differ in signedness [-Werror=pointer-sign]
../../src/gdb/regcache.c:235:2: error: pointer targets in assignment differ in signedness [-Werror=pointer-sign]
cc1: all warnings being treated as errors
regcache->register_status is "signed char".
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* regcache.c (regcache_xmalloc_1): Call XCALLOC with signed char
for 'regcache->register_status'.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" breakpoint.o 2>&1 1>/dev/null
../../src/gdb/breakpoint.c: In function ‘breakpoint_xfer_memory’:
../../src/gdb/breakpoint.c:1578:2: error: pointer targets in passing argument 3 of ‘gdbarch_breakpoint_from_pc’ differ in signedness [-Werror=pointer-sign]
In file included from ../../src/gdb/defs.h:644:0,
from ../../src/gdb/breakpoint.c:20:
../../src/gdb/gdbarch.h:495:25: note: expected ‘int *’ but argument is of type ‘unsigned int *’
target_info.placed_size is an 'int', and gdbarch_breakpoint_from_pc
takes an int too.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* breakpoint.c.c (breakpoint_xfer_memory): Change type of local to
int.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" stap-probe.o 2>&1 1>/dev/null
../../src/gdb/stap-probe.c: In function ‘handle_stap_probe’:
../../src/gdb/stap-probe.c:1306:19: error: pointer targets in assignment differ in signedness [-Werror=pointer-sign]
cc1: all warnings being treated as errors
make: *** [stap-probe.o] Error 1
provider is a string, so it's rightfully a char*. 'data' holds raw
bytes (bfd_byte), so a cast is the right thing to do.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* stap-probe.c (handle_stap_probe): Add cast to char*.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" linux-record.o 2>&1 1>/dev/null
...
../../src/gdb/linux-record.c: In function ‘record_linux_system_call’:
../../src/gdb/linux-record.c:1152:9: error: pointer targets in passing argument 3 of ‘regcache_raw_read_signed’ differ in signedness [-Werror=pointer-sign]
In file included from ../../src/gdb/linux-record.c:23:0:
../../src/gdb/regcache.h:76:3: note: expected ‘long int *’ but argument is of type ‘long unsigned int *’
../../src/gdb/linux-record.c:1186:13: error: pointer targets in passing argument 3 of ‘regcache_raw_read_signed’ differ in signedness [-Werror=pointer-sign]
In file included from ../../src/gdb/linux-record.c:23:0:
../../src/gdb/regcache.h:76:3: note: expected ‘long int *’ but argument is of type ‘long unsigned int *’
I believe the read_signed calls are correct, and the variables are in
the wrong.
Tested on x86_64 Fedora 17.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* linux-record.c (record_linux_system_call) <gdb_sys_msgrcv,
RECORD_MSGRCV>: Pass a signed variable to
regcache_raw_read_signed, instead of an unsigned one.
tcp_retry_limit is installed as variable of an unsigned command:
add_setshow_uinteger_cmd ("connect-timeout", class_obscure,
&tcp_retry_limit, _("\
and I found no uses of the variable treating it as signed (like < 0
checks or some such).
2013-03-07 Pedro Alves <palves@redhat.com>
* ser-tcp.c (tcp_retry_limit): Change type to unsigned int.
Move the declarations to a header, rather than declaring them in
(multiple) .c files.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* remote.c (hex2bin, bin2hex): Move extern declarations to ...
* remote.h (hex2bin, bin2hex): ... here.
* tracepoint.c (hex2bin, bin2hex): Remove extern declarations.
* tracepoint.c (cur_action, cur_step_action): Make them unsigned.
(cmd_qtfp): Initialize cur_action and cur_step_action 0 instead
of -1.
(cmd_qtsp): Adjust condition. Do post increment.
Set cur_action and cur_step_action back to 0.
PROBLEM:
The function linux_write_memory () in linux-low.c allocates a buffer
on the stack to hold a copy of the data to be written.
register PTRACE_XFER_TYPE *buffer = (PTRACE_XFER_TYPE *)
alloca (count * sizeof (PTRACE_XFER_TYPE));
"count" is the number of bytes to be written, rounded up to the
nearest multiple of sizeof (PTRACE_XFER_TYPE) and allowing for not
being an aligned address. The function later uses
buffer[0] = ptrace (PTRACE_PEEKTEXT, pid,
(PTRACE_ARG3_TYPE) (uintptr_t) addr, 0);
The problem is that this function can be called to write zero bytes on
an aligned address, for example when receiving an X packet of length 0
(used to test if 8-bit write is supported). Under these circumstances,
count can be zero.
Since in this case, buffer[0] may never have been allocated, the stack
is corrupted and gdbserver may crash.
SOLUTION:
Writing zero bytes should always succeed. The patch below returns
successfully early if the length is zero, so avoiding the stack
corruption.
Verified on the ARC GDB 7.5.1 port.
2013-03-07 Jeremy Bennett <jeremy.bennett@embecosm.com>
PR server/15236
* linux-low.c (linux_write_memory): Return early success if LEN is
zero.
The strlen in this function looked suspicious, for the function
documents that STR is in the target's charset (what if it is utf-32,
etc.).
On closer inspection, nothing is calling the function, and it's been
that way ever since the function was added.
gdb/
2013-03-06 Pedro Alves <palves@redhat.com>
* python/py-utils.c (target_string_to_unicode): Delete function.
* python/python-internal.h (target_string_to_unicode): Delete
declaration.
The current tstatus.exp tests shows PASSes if either the target
support or not the optional tstatus bits:
PASS: gdb.trace/tstatus.exp: tstatus does not report trace stop reason
PASS: gdb.trace/tstatus.exp: tstatus reports trace stop reason
The former (and any other similar case) should be UNSUPPORTED rather
than PASS. That'd make it much easier to spot actually problems with
the test (e.g., the one Yao's previous patch addressed), along with
regressions and progressions.
The "not supported" paths in tstatus.exp explicitly check for output
you'd get if the feature wasn't supported, so real unexpected failures
will still be caught as FAILs.
So now e.g., where we wanted to check if tstatus reports the trace
stop reason, and if the target does support it, we get
PASS: tstatus reports trace stop reason
if the target actually reports what we'd expect if the trace stop
reason isn't supported, we get:
UNSUPPORTED: tstatus reports trace stop reason
and if the target reports something else unexpected, we get:
FAIL: tstatus reports trace stop reason
That has the added bonus that the test string is always the same and
only the test results change (PASS/FAIL/UNSUPPORTED), which makes it
easier for testers see regressions, compared to the previous:
-PASS: gdb.trace/tstatus.exp: tstatus reports trace stop reason
+PASS: gdb.trace/tstatus.exp: tstatus does not report trace stop reason
which clearly easily goes by unnoticed, as evidenced by the existing
problem Yao's previous patch addressed.
Tested on x86_64 Fedora 17.
gdb/testsuite/
2013-03-06 Pedro Alves <palves@redhat.com>
* gdb.trace/tstatus.exp (run_trace_experiment): When the target
doesn't support the tested optional feature, call "unsupported"
with the same test message as the "pass" case, instead of calling
"pass" with a different message. Use the same text for the "fail"
cases too.
* gdb.trace/tstatus.exp: Remove the invocation of
gdb_load_shlibs, gdb_compile, clean_restart and runto_main.
(test_tracepoints): Don't set fast tracepoint.
(top level): Don't check agent library is loaded or not.
* cli/cli-decode.c (add_setshow_zuinteger_unlimited_cmd): Change
parameter VAR's type from "unsigned int" to "int".
* command.h (var_zuinteger_unlimited): Update its comments.
(add_setshow_zuinteger_unlimited_cmd): Update the declaration.
* linespec.c (struct linespec_canonical_name): New.
(struct linespec_state): Change canonical_names type to it.
(add_sal_to_sals): Change variable canonical_name to canonical. Change
xrealloc element size. Initialize the different CANONICAL fields.
(canonical_to_fullform): New.
(filter_results): Use it. Add variables canonical, fullform and
cleanup.
(struct decode_line_2_item, decode_line_2_compare_items): New.
(decode_line_2): Remove variables iter and item_names, add variables
items and items_count. Modify the code for these new variables.
gdb/testsuite/
* gdb.linespec/base/one/thefile.cc (twodup): New.
(m): Call it.
* gdb.linespec/base/two/thefile.cc (dupname): New.
(n): Call it.
* gdb.linespec/break-ask.exp: New file.
* gdb.linespec/lspec.cc (body_elsewhere): New comment marker.
gdb_byte should be used for bytes from the program being debugged. We
have many places using char or unsigned char instead all over the
existing ports, and more ends up added over time due to copy/paste as
new code is based on old code.
I've greped the tree for "char buf[", and fixed all I found.
Tested by building with --enable-targets=all.
2013-03-01 Pedro Alves <palves@redhat.com>
Use gdb_byte for bytes from the program being debugged.
* arm-tdep.c (arm_store_return_value, arm_get_longjmp_target):
Change type of local 'buf' to gdb_byte.
* avr-tdep.c (avr_frame_prev_register, avr_push_dummy_call): Likewise.
* bfin-tdep.c (bfin_push_dummy_call): Likewise.
* cris-tdep.c (cris_sigcontext_addr)
(cris_sigtramp_frame_unwind_cache): Likewise.
* frv-linux-tdep.c (frv_linux_pc_in_sigtramp)
(frv_linux_sigcontext_reg_addr, frv_linux_sigtramp_frame_cache):
Likewise.
* frv-tdep.c (frv_pseudo_register_write, frv_analyze_prologue): Likewise.
* hppa-hpux-tdep.c (hppa32_hpux_find_global_pointer)
(hppa32_hpux_search_dummy_call_sequence)
(hppa_hpux_supply_save_state): Likewise.
* hppa-linux-tdep.c (insns_match_pattern)
(hppa_linux_find_global_pointer): Likewise.
* hppa-tdep.c (hppa_in_function_epilogue_p)
(skip_prologue_hard_way, hppa_frame_cache): Likewise.
* i386-nto-tdep.c (i386nto_sigcontext_addr): Likewise.
* i386fbsd-tdep.c (i386fbsd_supply_uthread)
(i386fbsd_collect_uthread): Likewise.
* ia64-hpux-tdep.c (ia64_hpux_push_dummy_code): Likewise.
* ia64-linux-tdep.c (ia64_linux_sigcontext_register_address): Likewise.
* ia64-tdep.c (examine_prologue, ia64_frame_cache)
(ia64_frame_prev_register, ia64_sigtramp_frame_cache)
(ia64_sigtramp_frame_prev_register, ia64_access_reg)
(ia64_access_rse_reg, ia64_libunwind_frame_this_id)
(ia64_libunwind_frame_prev_register)
(ia64_libunwind_sigtramp_frame_this_id)
(ia64_find_global_pointer_from_dynamic_section)
(find_extant_func_descr, find_func_descr, ia64_dummy_id)
(ia64_unwind_pc): Likewise.
* iq2000-tdep.c (iq2000_store_return_value): Likewise.
* m68hc11-tdep.c (m68hc11_push_dummy_call)
(m68hc11_extract_return_value): Likewise.
* m68klinux-nat.c (fetch_register, store_register): Likewise.
* mep-tdep.c (mep_pseudo_cr32_read, mep_pseudo_cr32_write)
(mep_get_insn, mep_push_dummy_call): Likewise.
* mips-linux-tdep.c (mips_linux_get_longjmp_target)
(mips_linux_in_dynsym_stub): Likewise.
* mn10300-tdep.c (mep_pseudo_cr32_write): Likewise.
* ppc-linux-nat.c (fetch_register, store_register): Likewise.
* regcache.c (dump_endian_bytes): Change type of parameter 'buf'
to gdb_byte.
* remote-mips.c (mips_set_register): Likewise.
* remote-sim.c (gdbsim_fetch_register): Likewise.
* score-tdep.c (score7_fetch_inst): Change type of parameter
'memblock' and local 'buf' to gdb_byte.
(score7_malloc_and_get_memblock): Change return type to gdb_byte.
Change type of local 'buf' to gdb_byte. Adjust.
(score7_adjust_memblock_ptr): Change type of parameter 'memblock'
to gdb_byte**.
(score7_analyze_prologue): Change type of 'memblock' and
'memblock_ptr' locals to gdb_byte*.
* sh64-tdep.c (sh64_extract_return_value)
(sh64_store_return_value): Change type of local 'buf' to gdb_byte.
* solib-darwin.c (darwin_current_sos, darwin_read_exec_load_addr):
* solib-pa64.c (pa64_solib_create_inferior_hook)
(pa64_open_symbol_file_object): Remove local 'buf'.
* solib-som.c (som_solib_create_inferior_hook, link_map_start)
(som_open_symbol_file_object): Likewise.
* solib-spu.c (spu_current_sos): Likewise.
* spu-linux-nat.c (spu_fetch_inferior_registers): Likewise.
* spu-multiarch.c (parse_spufs_run, spu_fetch_registers)
(spu_store_registers): Likewise.
* target.c (debug_print_register): Likewise.
* tic6x-tdep.c (tic6x_get_longjmp_target): Likewise.
* xstormy16-tdep.c (xstormy16_store_return_value)
(xstormy16_push_dummy_call, xstormy16_resolve_jmp_table_entry)
(xstormy16_find_jmp_table_entry): Likewise.
printf-like functions to avoid type related warnings on all
platforms.
(get_child_debug_event): Print dwDebugEventCode as hex since
that's how it's usually documented.
* gdb.trace/report.exp: Move some code to ...
(use_collected_data): New.
(top level): Call use_collected_data once on the live target.
Save at file of the current trace session, load it with target
tfile, and call use_collected_data again.
printf-like functions to avoid type related warnings on all
platforms.
(handle_output_debug_string): Fetch context information address
from debug string using string_to_core_addr.
* regformats/reg-tilegx.dat (name): Change abi name to "tilegx".
* regformats/reg-tilegx32.dat: New.
gdbserver/
* Makefile.in (clean): Remove reg-tilegx.c, reg-tilegx32.c.
(reg-tilegx32.c): New rule.
* configure.srv (tilegx-*-linux*): Add reg-tilegx32.o to srv_regobj.
* linux-tile-low.c (tile_arch_setup): New function. Invoke
different register info initializer according to elf class.
(init_registers_tilgx32): New function. The tilegx32 register info
initializer.
(tile_fill_gregset): Use "uint_reg_t" to represent register size.
(tile_store_gregset): Likewise.
2013-02-27 Yao Qi <yao@codesourcery.com>
Pedro Alves <palves@redhat.com>
* tracepoint.c (tfile_trace_find): For tfind
pc/tp/range/outside, look for the next trace frame instead of
always starting from frame 0.
The "you have broken" bit of this text reads to me as if I had broken
it myself somehow. This patch eliminates that ambiguity.
2013-02-25 Pedro Alves <palves@redhat.com>
* common/linux-ptrace.c (linux_ptrace_test_ret_to_nx): Change
warning text.
symbol size.
* ppc64-tdep.c (ppc64_elf_make_msymbol_special): New function.
* ppc64-tdep.h (ppc64_elf_make_msymbol_special): Declare.
* ppc-linux-tdep.c (ppc_linux_init_abi): Set up to use the above.
* ppcfbsd-tdep.c (ppcfbsd_init_abi): Likewise.
Code cleanup.
* elfread.c (build_id_bfd_get): Make the return type const.
(build_id_verify): Make the check parameter const.
(build_id_to_debug_filename): Make the build_id parameter and variable
data const.
(find_separate_debug_file_by_buildid): Make the variable build_id const.
(Values From Inferior, Types In Python, Inferiors In Python)
(Events In Python, Threads In Python, Frames In Python, Blocks In
Python, Symbols In Python, Symbol Tables In Python): Remove
@tables.
(Packets, General Query Packets, Tracepoint Packets)
(Host I/O Packets): Use @w{} for empty @item.
* python/py-arch.c (archpy_disassmble): Implementation of the
new method gdb.Architecture.disassemble.
(arch_object_methods): Add entry for the new method.
* doc/gdb.texinfo (Architectures In Python): Add description
about the new method gdb.Architecture.disassemble.
* testsuite/gdb.python/py-arch.c: New test case
* testsuite/gdb.python/py-arch.exp: New tests to test
gdb.Architecture.disassemble
* testsuite/gdb.python/Makefile.in: Add py-arch to the list of
EXECUTABLES.
Addresses, as most numbers in the RSP are hex encoded, with variable
length (that just means the width isn't specified, and there's no top
cap. So they should be extracted with unpack_varlen_hex.
A couple spots in server.c are using strto(u)l, which doesn't work on
LLP64 targets.
This patch fixes it.
Tested on x86_64 Fedora 17.
2013-02-19 Pedro Alves <palves@redhat.com>
Kai Tietz <ktietz@redhat.com>
PR gdb/15161
* server.c (handle_query) <CRC check>: Use unpack_varlen_hex
instead of strtoul to extract address from packet.
(process_serial_event) <'z'>: Likewise.
While touching monitor_load in a previous patch, I noticed this method
is no longer set to anything other than NULL in the tree, so we can
remove it.
Tested by building with --enable-targets=all.
2013-02-19 Pedro Alves <palves@redhat.com>
Garbage collect 'struct monitor_ops'::load_routine.
* monitor.h (struct monitor_ops) <load_routine>: Remove field.
* monitor.c (monitor_load): No longer call
current_monitor->load_routine.
* dbug-rom.c (init_dbug_cmds): Don't set 'load_routine'.
* m32r-rom.c (init_m32r_cmds): Don't set 'load_routine'.
* ppcbug-rom.c (init_ppc_cmds): Don't set 'load_routine'.
Harmonize this old-looking code with generic_load, which fixes several
issues.
2013-02-19 Pedro Alves <palves@redhat.com>
PR gdb/15161
Harmonize with generic_load.
* monitor.c: Include "readline/readline.h".
(monitor_load): Rename parameter 'file' to 'args'. Use build_argv
instead of sscanf. Use CORE_ADDR/strtoulst instead of unsigned
long/strtol for the 'load_offset' local. Error out if no argument
is given or if too many arguments are given. Tilde expand the
passed in file name.
* symfile.c (load_section_data): Change type of load_offset
to CORE_ADDR.
(generic_load): User strtoulst instead of strtoul for conversion
of load_offset.
(tilegx_write_pc): New function.
(tilegx_cannot_reference_register): Return zero if REGNO
is TILEGX_FAULTNUM_REGNUM.
(tilegx_gdbarch_init): Add call to set_gdbarch_write_pc.
(tilegx_register_name): Add handling of "faultnum" register.
* tilegx-tdep.h (enum tilegx_regnum): Add TILEGX_FAULTNUM_REGNUM.
* tilegx-linux-tdep.c (tilegx_linux_supply_regset): Add
handling of TILEGX_FAULTNUM_REGNUM.
* tilegx-linux-nat.c (regmap): Add entry for TILEGX_FAULTNUM_REGNUM.
Hafiz Abid Qadeer <abidh@codesourcery.com>
gdb/
* NEWS: Mention new field "trace-file".
* tracepoint.c (trace_status_mi): Output "trace-file" field.
(tfile_open): Record the trace file's filename in the trace
status.
(tfile_files_info): Mention the name of the trace file.
Check the "filename" field explicitely.
(trace_status_command): Explicitely check "filename" field.
(trace_find_command): Ditto.
(trace_find_pc_command): Ditto.
(trace_find_tracepoint_command): Ditto.
(trace_find_line_command): Ditto.
(trace_find_range_command): Ditto.
(trace_find_outside_command): Ditto.
* tracepoint.h (struct trace_status) <from_file>: Rename it
to "filename" and make it hold the trace file's filename
instead of a boolean.
* remote.c (remote_get_trace_status): Initialize "filename"
field with NULL instead of 0.
gdb/doc/
* gdb.texinfo (GDB/MI Tracepoint Commands) <-trace-status>:
Document the "trace-file" field.
gdb/testsuite/
* gdb.trace/tfile.exp: Add test for -trace-status command.
The previous notes aren't being released before setting new ones.
Tested on x86_64 Fedora 17.
gdb/gdbserver/
2013-02-14 Pedro Alves <palves@redhat.com>
Plug memory leak.
* tracepoint.c (cmd_qtnotes): Free TRACING_USER_NAME,
TRACING_NOTES and TRACING_STOP_NOTE before clobbering.
An obvious use case for savestring.
Tested on x86_64 Fedora 17.
2013-02-14 Pedro Alves <palves@redhat.com>
* tracepoint.c (cmd_qtdpsrc): Use savestring.
This makes gdbserver share gdb's savestring, instead of baking its own.
Tested on x86_64 Fedora 17.
gdb/
2013-02-14 Pedro Alves <palves@redhat.com>
* utils.c (savestring): Don't #undef it. Move function to
common/common-utils.c.
* common/common-utils.c: Include gdb_string.h.
(savestring): Move here from utils.c.
* common/common-utils.h (savestring): Declare.
gdb/gdbserver/
2013-02-14 Pedro Alves <palves@redhat.com>
* tracepoint.c (save_string): Delete.
(add_tracepoint_action): Use savestring instead of save_string.
It's better to avoid needless confusion, and call string length,
length, instead of size, which is usually used to refer to sizeof of
the string (len+1):
size_t len = strlen (str);
size_t size = sizeof (str);
Tested on x86_64 Fedora 17.
2013-02-14 Pedro Alves <palves@redhat.com>
* utils.c (savestring): Rename parameter 'size' to 'len'.
Yufeng Zhang <yufeng.zhang@arm.com>
* aarch64-linux-nat.c (aarch64_init_debug_reg_state): Delete.
(aarch64_inferior_data, struct aarch64_inferior_data):
Delete.
(struct aarch64_process_info): New.
(aarch64_process_list): New global.
(aarch64_find_process_pid, aarch64_add_process)
(aarch64_process_info_get): New functions.
(aarch64_inferior_data_get): Delete.
(aarch64_process_info_get): New function.
(aarch64_forget_process): New function.
(aarch64_get_debug_reg_state): New parameter 'pid'. Reimplement.
(aarch64_linux_prepare_to_resume): Pass the lwp's pid to
aarch64_get_debug_reg_state.
(aarch64_notify_debug_reg_change): Use iterate_over_lwps
instead of linux_nat_iterate_watchpoint_lwps.
(aarch64_linux_new_fork): New function.
(aarch64_linux_child_post_startup_inferior): Use
aarch64_forget_process instead of aarch64_init_debug_reg_state.
(aarch64_handle_breakpoint, aarch64_linux_insert_hw_breakpoint)
(aarch64_linux_remove_hw_breakpoint)
(aarch64_handle_aligned_watchpoint)
(aarch64_handle_unaligned_watchpoint)
(aarch64_linux_insert_watchpoint)
(aarch64_linux_remove_watchpoint)
(aarch64_linux_stopped_data_address): Adjust to pass the current
process id to aarch64_debug_reg_state.
(_initialize_aarch64_linux_nat): Install aarch64_linux_new_fork as
linux_nat_new_fork hook, and aarch64_forget_process as
linux_nat_forget_process hook; remove the call to
register_inferior_data_with_cleanup.
I happened to notice a bug with ptype &Ref, and found out userdef.exp
actually exercises the bug. With:
class Container
{
public:
Member m;
Member& operator* ();
};
Member& Container::operator* ()
{
return this->m;
}
And 'c' is of type Container:
(gdb) p c
$1 = {m = {z = -9192}}
(gdb) p *c
$2 = (Member &) @0x7fffffffda20: {z = -9192}
(gdb) ptype *c
type = class Member {
public:
int z;
} &
(gdb) p &*c
$3 = (Member *) 0x7fffffffda20
(gdb) ptype &*c
type = class Member {
public:
int z;
} &*
(gdb)
Notice that last print (&*c) on says the type is a pointer - that's
how you get the address behind a reference. But notice the last ptype
instead says the type of the same expression is a pointer _reference_.
This looks like a bug to me.
This patch fixes it. The issue is that we're entering the VALUE_LVAL
(x) == lval_memory branch by mistake for references. The fix is just
to swap the tests so references are checked first, like value_addr
also handles references first.
Tested on x86_64 Fedora 17.
2013-02-14 Pedro Alves <palves@redhat.com>
* eval.c (evaluate_subexp_for_address) <default_case_after_eval,
EVAL_AVOID_SIDE_EFFECTS>: Swap and handle TYPE_CODE_REF before
lval_memory.
2013-02-14 Pedro Alves <palves@redhat.com>
* gdb.cp/userdef.exp (ptype &*c): Don't expect an &.
Hafiz Abid Qadeer <abidh@codesourcery.com>
gdb/
* tracepoint.h (validate_trace_state_variable_name): Declare.
* tracepoint.c (validate_trace_state_variable_name): New.
(trace_variable_command): Parse the trace state variable's name
without using parse_expression. Do several validations.
* mi/mi-main.c (mi_cmd_trace_define_variable): Don't parse the
trace state variable's name with parse_expression. Validate it.
gdb/testsuite/
* gdb.trace/tsv.exp: Adjust tests, and add a few more.
While reviewing the native AArch64 patch, I noticed a problem:
On 02/06/2013 08:46 PM, Pedro Alves wrote:
>
>> > +static void
>> > +aarch64_linux_prepare_to_resume (struct lwp_info *lwp)
>> > +{
>> > + struct arch_lwp_info *info = lwp->arch_private;
>> > +
>> > + /* NULL means this is the main thread still going through the shell,
>> > + or, no watchpoint has been set yet. In that case, there's
>> > + nothing to do. */
>> > + if (info == NULL)
>> > + return;
>> > +
>> > + if (DR_HAS_CHANGED (info->dr_changed_bp)
>> > + || DR_HAS_CHANGED (info->dr_changed_wp))
>> > + {
>> > + int tid = GET_LWP (lwp->ptid);
>> > + struct aarch64_debug_reg_state *state = aarch64_get_debug_reg_state ();
> Hmm. This is always fetching the debug_reg_state of
> the current inferior, but may not be the inferior of lwp.
> I see the same bug on x86. Sorry about that. I'll fix it.
A natural fix would be to make xxx_get_debug_reg_state take an
inferior argument, but that doesn't work because of the case where we
detach breakpoints/watchpoints from the child fork, at a time there's
no inferior for the child fork at all. We do a nasty hack in
i386_inferior_data_get, but that relies on all callers pointing the
current inferior to the correct inferior, which isn't actually being
done by all callers, and I don't think we want to enforce that -- deep
in the bowls of linux-nat.c, there are many cases we resume lwps
behind the scenes, and it's be better to not have that code rely on
global state (as it doesn't today).
The fix is to decouple the watchpoints code from inferiors, making it
track target processes instead. This way, we can freely keep track of
the watchpoint mirrors for these processes behind the core's back.
Checkpoints also play dirty tricks with swapping the process behind
the inferior, so they get special treatment too in the patch (which
just amounts to calling a new hook). Instead of the old hack in
i386_inferior_data_get, where we returned a copy of the current
inferior's debug registers mirror, as soon as we detect a fork in the
target, we copy the debug register mirror from the parent to the child
process.
I don't have an old kernel handy to test, but I stepped through gdb doing
the watchpoint removal in the fork child in the watchpoint-fork test
seeing that the debug registers end up cleared in the child.
I didn't find the need for linux_nat_iterate_watchpoint_lwps. If
we use plain iterate_over_lwps instead, what happens is that
when removing watchpoints, that iterate_over_lwps doesn't actually
iterate over anything, since the fork child is not added to the
lwp list until later, at detach time, in linux_child_follow_fork.
And if we don't iterate over that lwp, we don't mark its debug
registers as needing update. But linux_child_follow_fork takes
care of doing that explicitly:
child_lp = add_lwp (inferior_ptid);
child_lp->stopped = 1;
child_lp->last_resume_kind = resume_stop;
make_cleanup (delete_lwp_cleanup, child_lp);
/* CHILD_LP has new PID, therefore linux_nat_new_thread is not called for it.
See i386_inferior_data_get for the Linux kernel specifics.
Ensure linux_nat_prepare_to_resume will reset the hardware debug
registers. It is done by the linux_nat_new_thread call, which is
being skipped in add_lwp above for the first lwp of a pid. */
gdb_assert (num_lwps (GET_PID (child_lp->ptid)) == 1);
if (linux_nat_new_thread != NULL)
linux_nat_new_thread (child_lp);
if (linux_nat_prepare_to_resume != NULL)
linux_nat_prepare_to_resume (child_lp);
ptrace (PTRACE_DETACH, child_pid, 0, 0);
so unless I'm missing something (quite possible) it ends up all
the same. But, the !detach-on-fork, and the "follow-fork child" paths
should also call linux_nat_new_thread, and they don't presently. It
seems to me in those cases we're not clearing debug regs correctly
when that's needed. Instead of copying that bit that works around
add_lwp bypassing the linux_nat_new_thread call, I thought it'd
be better to add an add_initial_lwp call to be used in the case we
really need to bypass linux_nat_new_thread, and make
add_lwp always call linux_nat_new_thread.
i386_cleanup_dregs is rewritten to forget about the current process
debug mirrors, which takes cares of other i386 ports. Only a couple
of extra tweaks here and there were needed, as some targets wheren't
actually calling i386_cleanup_dregs.
Tested on Fedora 17 x86_64 -m64/-m32.
GDBserver already fetches the i386_debug_reg_state from the right
process, and, it doesn't handle forks at all, so no fix is needed over
there.
gdb/
2013-02-13 Pedro Alves <palves@redhat.com>
* amd64-linux-nat.c (update_debug_registers_callback):
Update comment.
(amd64_linux_dr_set_control, amd64_linux_dr_set_addr): Use
iterate_over_lwps.
(amd64_linux_prepare_to_resume): Pass the lwp's pid to
i386_debug_reg_state.
(amd64_linux_new_fork): New function.
(_initialize_amd64_linux_nat): Install amd64_linux_new_fork as
linux_nat_new_fork hook, and i386_forget_process as
linux_nat_forget_process hook.
* i386-linux-nat.c (update_debug_registers_callback):
Update comment.
(amd64_linux_dr_set_control, amd64_linux_dr_set_addr): Use
iterate_over_lwps.
(i386_linux_prepare_to_resume): Pass the lwp's pid to
i386_debug_reg_state.
(i386_linux_new_fork): New function.
(_initialize_i386_linux_nat): Install i386_linux_new_fork as
linux_nat_new_fork hook, and i386_forget_process as
linux_nat_forget_process hook.
* i386-nat.c (i386_init_dregs): Delete.
(i386_inferior_data, struct i386_inferior_data):
Delete.
(struct i386_process_info): New.
(i386_process_list): New global.
(i386_find_process_pid, i386_add_process, i386_process_info_get):
New functions.
(i386_inferior_data_get): Delete.
(i386_process_info_get): New function.
(i386_debug_reg_state): New parameter 'pid'. Reimplement.
(i386_forget_process): New function.
(i386_cleanup_dregs): Rewrite.
(i386_update_inferior_debug_regs, i386_insert_watchpoint)
(i386_remove_watchpoint, i386_region_ok_for_watchpoint)
(i386_stopped_data_address, i386_insert_hw_breakpoint)
(i386_remove_hw_breakpoint): Adjust to pass the current process id
to i386_debug_reg_state.
(i386_use_watchpoints): Don't register inferior data.
* i386-nat.h (i386_debug_reg_state): Add new 'pid' parameter, and
adjust comment.
(i386_forget_process): Declare.
* linux-fork.c (delete_fork): Call linux_nat_forget_process.
* linux-nat.c (linux_nat_new_fork, linux_nat_forget_process_hook):
New static globals.
(linux_child_follow_fork): Don't call linux_nat_new_thread here.
(add_initial_lwp): New, factored out from ...
(add_lwp): ... this. Don't check the number of lwps before
calling linux_nat_new_thread.
(linux_nat_iterate_watchpoint_lwps): Delete.
(linux_nat_attach): Use add_initial_lwp instead of add_lwp.
(linux_handle_extended_wait): Call the linux_nat_new_fork hook on
forks and vforks.
(linux_nat_wait_1): Use add_initial_lwp instead of add_lwp for the
initial lwp.
(linux_nat_kill, linux_nat_mourn_inferior): Call
linux_nat_forget_process.
(linux_nat_set_new_fork, linux_nat_set_forget_process)
(linux_nat_forget_process): New functions.
* linux-nat.h (linux_nat_iterate_watchpoint_lwps_ftype): Delete
type.
(linux_nat_iterate_watchpoint_lwps): Delete declaration.
(linux_nat_new_fork_ftype, linux_nat_forget_process_ftype): New
types.
(linux_nat_set_new_fork, linux_nat_set_forget_process)
(linux_nat_forget_process): New declarations.
* amd64fbsd-nat.c (super_mourn_inferior): New global.
(amd64fbsd_mourn_inferior): New function.
(_initialize_amd64fbsd_nat): Override to_mourn_inferior.
* windows-nat.c (windows_detach): Call i386_cleanup_dregs.
2013-02-13 Marcus Shawcroft <marcus.shawcroft@arm.com>
* aarch64-linux-nat.c (debug_reg_change_callback)
(aarch64_linux_get_debug_reg_capacity): ARI fix: Replace %llx with
%s and phex().
* c-exp.y (lex_one_token): Initialize other fields of yylval on
NAME return.
(classify_inner_name): Remove 'first_name' argument, add
'context'. Remove unused variable.
(yylex): Explicitly maintain the context type. Exit loop earlier
if NAME result is seen.
gdb/testsuite
* gdb.cp/m-static.cc (gnu_obj_1::~gnu_obj_1): New destructor.
* gdb.cp/m-static.exp: Add tests to print quoted destructor.
Some files managed to get in the tree with outdated copyright years.
This fixes it. Applied.
gdb/
2013-02-12 Pedro Alves <palves@redhat.com>
* break-catch-sig.c: Update copyright years.
gdb/testsuite/
2013-02-12 Pedro Alves <palves@redhat.com>
* gdb.base/catch-signal.c: Update copyright years.
* gdb.base/catch-signal.exp: Update copyright years.
* gdb.dwarf2/dw2-dir-file-name.c: Update copyright years.
* gdb.dwarf2/dw2-dir-file-name.exp: Update copyright years.
* gdb.dwarf2/dw2-empty-pc-range.S: Update copyright years.
* gdb.dwarf2/dw2-error.S: Update copyright years.
* gdb.dwarf2/dw2-error.c: Update copyright years.
* gdb.dwarf2/dw2-restrict.S: Update copyright years.
* gdb.dwarf2/dw2-restrict.c: Update copyright years.
* gdb.dwarf2/dw2-restrict.exp: Update copyright years.
null ptr check to prevent gdbserver from crashing
Evaluating a thread local storage variable in a remote scenario crashes
gdbserver if libthread-db could not be loaded.
2013-02-12 Sanimir Agovic <sanimir.agovic@intel.com>
gdbserver/
* thread-db.c (thread_db_get_tls_address):
NULL pointer check thread_db.
testsuite/
* gdb.server/no-thread-db.exp: New file.
* gdb.server/no-thread-db.c: New file.
* gdb.server/Makefile.in (EXECUTABLES): Add no-thread-db.
provide a ui_out destructor.
* ui-out.h: Declare the new ui_out destructor.
(ui_out_impl): Add a field for data destructor in ui_out_impl.
* ui-out.c (default_data_destroy): Add a default data destructor
which does nothing.
(default_ui_out_impl): Set the new data_destroy field to
default_data_destroy
(uo_data_destroy): Local function which invokes the data
destructor if present.
(clear_table): Local function which clears the table data of a
ui_out object.
(ui_out_destroy): Public function which frees a ui_out object.
(ui_out_table_end): Use the new clear_table function.
* cli-out.c (cli_ui_out_impl): Set the new data_destroy field to
NULL.
* mi/mi-out.c (mi_ui_out_impl): Set the new data_destroy field
to NULL.
(printf_decfloat): New function. Broken out from ui_printf.
Remove unnecessary code to shift the entire format string down.
(printf_pointer): New function.
(ui_printf): Code to print C strings, wide C strings, decfloats,
and pointers moved to separate functions.
2013-02-08 Yufeng Zhang <yufeng.zhang@arm.com>
* aarch64-linux-tdep.c (AARCH64_LINUX_SIZEOF_GREGSET): Change the
number of the registers from 36 to 34.
* linux-aarch64-low.c (aarch64_arch_setup): Clamp
aarch64_num_wp_regs and aarch64_num_bp_regs to
AARCH64_HWP_MAX_NUM and AARCH64_HBP_MAX_NUM respectively.
gdb/
* sparc-tdep.c (sparc32_return_value): Handle writing return value when
using RETURN_VALUE_ABI_PRESERVES_ADDRESS.
* value.c (struct_return_convention): New function.
(using_struct_return): Implement in terms of struct_return_convention.
* value.h (struct_return_convention): Declare.
* stack.c (return_command): Allow successful overriding of the return
value when RETURN_VALUE_ABI_PRESERVES_ADDRESS.
2013-02-06 Yao Qi <yao@codesourcery.com>
* gdb.texinfo (GDB/MI Async Records): Document new MI
notification "=tsv-modified". Update the document of MI
notification "=tsv-created".
* observer.texi (GDB Observers): New observer tsv_modified.
Update observer tsv_created and tsv_deleted.
gdb:
2013-02-06 Yao Qi <yao@codesourcery.com>
* mi/mi-interp.c: Include "tracepoint.h".
(mi_tsv_modified): Declare.
(mi_tsv_created, mi_tsv_deleted): Update declaration.
(mi_interpreter_init): Call observer_attach_tsv_modified.
(mi_tsv_modified): New.
(mi_tsv_created, mi_tsv_deleted): Update.
* tracepoint.c (trace_variable_command): Call
observer_notify_tsv_modified if the initial value of tsv is
changed.
(delete_trace_state_variable): Call
observer_notify_tsv_deleted earlier.
(trace_variable_command): Caller update.
(create_tsv_from_upload): Likewise.
* observer.sh: Declare "struct trace_state_variable".
* NEWS: Mention the new MI notification "=tsv-modified".
gdb/testsuite:
2013-02-06 Yao Qi <yao@codesourcery.com>
* gdb.trace/mi-tsv-changed.exp (test_create_delete_tsv): Rename
to ...
(test_create_delete_modify_tsv): ... here. New test on modifying
the initial value of a tsv.
2013-02-05 Yufeng Zhang <yufeng.zhang@arm.com>
* gdb.texinfo (AArch64 Features): New section; document
org.gnu.gdb.aarch64.core and org.gnu.gdb.aarch64.fpu.
(Architectures): Add new AArch64 section to document AArch64
architecture specific commands.
(ABI): Add description of the new OS ABI "Newlib" and its influence
on the longjmp handling.
Denys Vlasenko <dvlasenk@redhat.com>
Pedro Alves <palves@redhat.com>
* gdbarch.sh (elfcore_write_linux_prpsinfo): New F hook.
(struct elf_internal_linux_prpsinfo): Forward declare.
* gdbarch.h, gdbarch.c: Regenerate.
* linux-tdep.c: Include `cli/cli-utils.h'.
(linux_fill_prpsinfo): New function.
(linux_make_corefile_notes): Use linux_fill_prpsinfo. If there's
an elfcore_write_linux_prpsinfo hook, use it, otherwise, use
elfcore_write_linux_prpsinfo32 or elfcore_write_linux_prpsinfo64
depending on gdbarch pointer bitness.
* ppc-linux-tdep.c: Include elf-bfd.h.
(ppc_linux_init_abi): Hook in elfcore_write_ppc_linux_prpsinfo32
on 32-bit.
* dwarf2read.c (file_file_name): New function with code from
file_full_name.
(file_full_name): Move most of the code to file_file_name.
(macro_start_file): Rename variable full_name to file_name and use
file_file_name for it. Add comp_dir parameter to new_macro_table.
* macrocmd.c (show_pp_source_pos): New variable fullname. Replace any
macro_source_file->filename access by macro_source_fullname call.
* macroscope.c (_initialize_macroscope): Update the new_macro_table
caller.
* macrotab.c (struct macro_table): New field comp_dir.
(macro_include): New variables link_fullname and source_fullname.
Replace any macro_source_file->filename access by macro_source_fullname
call.
(macro_lookup_inclusion): Remove the partial filenames checking code.
(check_for_redefinition): New variables source_fullname and
found_key_fullname. Replace any macro_source_file->filename access by
macro_source_fullname call.
(macro_undef): New variables source_fullname and key_fullname. Replace
any macro_source_file->filename access by macro_source_fullname call.
(macro_lookup_definition): New variables retval and source_fullname.
Replace any macro_source_file->filename access by macro_source_fullname
call.
(foreach_macro): New variable key_fullname. Replace any
macro_source_file->filename access by macro_source_fullname call.
(foreach_macro_in_scope): New variable datum_fullname. Replace any
macro_source_file->filename access by macro_source_fullname call.
(new_macro_table): Add parameter comp_dir. Initialize T with it.
(macro_source_fullname): New function.
* macrotab.h (struct macro_source_file): Extent the filename field
comment.
(new_macro_table): New parameter comp_dir, add a comment for it.
(macro_source_fullname): new declaration.
gdb/testsuite/
* gdb.linespec/base/one/header.h: New file.
* gdb.linespec/base/two/header.h: New file.
* gdb.linespec/macro-relative.c: New file.
* gdb.linespec/macro-relative.exp: New file.
* dwarf2read.c (dw2_map_symtabs_matching_filename): Move variable
this_real_name to outer block. Use it also for
compare_filenames_for_search.
(dw2_expand_symtabs_matching): New variable this_real_name. Use it
with dw2_get_real_path for file_matcher, considering also
BASENAMES_MAY_DIFFER.
(file_full_name): Prepend COMP_DIR even for relative lh->INCLUDE_DIRS.
* dwarf2read.c (dw2_expand_symtabs_matching): Add basenames parameter
to the file_matcher parameter. Pass 0 to it.
(dwarf2_create_include_psymtab): Copy also DIRNAME.
* psymtab.c (partial_map_symtabs_matching_filename): Drop handling of
NULL psymtab_to_fullname result.
(psymtab_to_fullname): Remove variable r. Never return NULL, assemble
an expected filename instead.
(expand_symtabs_matching_via_partial): Add basenames parameter to the
file_matcher parameter. Call also psymtab_to_fullname, after newly
considering BASENAMES_MAY_DIFFER.
* source.c (rewrite_source_path): Remove static.
* source.h (rewrite_source_path): New declaration.
* symfile.h (struct quick_symbol_functions): Add basenames parameter to
the expand_symtabs_matching field. Comment it.
* symtab.c (file_matches): New function comment. Add parameter
basenames, implement it.
(search_symbols_file_matches): Add basenames parameter. Update the
file_matches caller.
(search_symbols): Match FILES also against symtab_to_fullname.
Optimize it for BASENAMES_MAY_DIFFER.
gdb/testsuite/
* gdb.base/fullpath-expand-func.c: New file.
* gdb.base/fullpath-expand.c: New file.
* gdb.base/fullpath-expand.exp: New file.
* gdb.base/realname-expand-real.c: New file.
* gdb.base/realname-expand.c: New file.
* gdb.base/realname-expand.exp: New file.
* source.c (print_source_lines_base): Print for TUI also "fullname".
* tui/tui-data.c (init_content_element): Change tui_locator_element
field to full_name.
* tui/tui-data.h (struct tui_locator_element): Likewise.
* tui/tui-disasm.c (tui_show_disassem_and_update_source): Rename
tui_update_locator_filename calls to tui_update_locator_fullname.
Replace symtab->filename refererence by symtab_to_fullname call.
* tui/tui-out.c (tui_field_string): Check for "fullname" now.
* tui/tui-source.c (tui_set_source_content): Change tui_locator_element
field to full_name. Replace symtab->filename refererence by
symtab_to_fullname call.
(tui_show_symtab_source): Rename parameter to fullname. Change
tui_locator_element field to full_name.
* tui/tui-stack.c: Include source.h.
(tui_set_locator_filename): Rename the declaration to ...
(tui_set_locator_fullname): ... here. Rename its parameter to
fullname, updates its comment.
(tui_set_locator_info): Rename its parameter to fullname.
(tui_set_locator_filename): Rename the definition to ...
(tui_set_locator_fullname): ... here. Rename its parameter to
fullname, updates its comment. Change tui_locator_element field to
full_name.
(tui_set_locator_info): Rename its parameter to fullname.
(tui_set_locator_info): Rename callee to tui_set_locator_fullname.
(tui_update_locator_filename): Rename to ...
(tui_update_locator_fullname): ... here. Rename callee to
tui_set_locator_fullname.
(tui_show_frame_info): Replace symtab->filename refererence by
symtab_to_fullname call.
* tui/tui-stack.h (tui_update_locator_filename): Rename to ...
(tui_update_locator_fullname): ... here.
* tui/tui-winsource.c (tui_display_main): Rename the callee to
tui_update_locator_fullname. Replace symtab->filename refererence by
symtab_to_fullname call.
* tui/tui.c (tui_show_source): Rename its parameter to fullname.
Rename the callee to tui_update_locator_fullname.
* tui/tui.h (tui_show_source): Rename its parameter to fullname.
* ada-lang.c (user_select_syms): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
* breakpoint.c (print_breakpoint_location, resolve_sal_pc): Likewise.
(clear_command): New variable sal_fullname, initialize it. Replace
compare_filenames_for_search by filename_cmp with sal_fullname.
(say_where, update_static_tracepoint): Replace symtab->filename
refererences by symtab_to_filename_for_display calls.
* cli/cli-cmds.c (edit_command, list_command, ambiguous_line_spec):
Likewise.
* dwarf2read.c: Include source.h.
(fixup_go_packaging): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* linespec.c (add_sal_to_sals): Rename variable filename to fullname.
Replace symtab->filename refererences by symtab_to_filename_for_display
calls.
(create_sals_line_offset, convert_linespec_to_sals): New variable
fullname, initialize it, replace symtab->filename reference by the
variable.
* linux-fork.c: Include source.h.
(info_checkpoints_command): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* macroscope.c (sal_macro_scope): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
* mdebugread.c: Include source.h.
(psymtab_to_symtab_1): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_file)
(mi_cmd_file_list_exec_source_files): Likewise.
* printcmd.c: Include source.h.
(build_address_symbolic): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* psymtab.c (partial_map_symtabs_matching_filename)
(read_psymtabs_with_fullname): Call compare_filenames_for_search also
with psymtab_to_fullname.
* python/py-symtab.c (stpy_str): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
(stpy_get_filename): New variable filename, initialize it, use instead
of symtab->filename refererences.
(salpy_str): Make variable filename const char *. Replace
symtab->filename refererences by symtab_to_filename_for_display calls.
* skip.c: Include source.h and filenames.h.
(skip_file_command): Remove const from the symtab variable. Replace
symtab->filename refererences by symtab_to_fullname call.
(function_name_is_marked_for_skip): New variables searched_for_fullname
and fullname. Use them to search also with symtab's fullname.
* source.c (find_source_lines): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
(print_source_lines_base): New variable filename, use it instead of
symtab->filename. Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
(line_info, forward_search_command): Replace symtab->filename
refererences by symtab_to_filename_for_display calls.
(reverse_search_command): Replace symtab->filename refererences by
symtab_to_filename_for_display calls. New variable filename for it.
* stack.c (frame_info): Likewise.
* symmisc.c: Include source.h.
(dump_objfile, dump_symtab_1, maintenance_print_symbols)
(maintenance_info_symtabs): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* symtab.c (iterate_over_some_symtabs): Call
compare_filenames_for_search also with symtab_to_fullname.
(lookup_symbol_aux_quick, basic_lookup_transparent_type_quick): Replace
symtab->filename refererences by symtab_to_filename_for_display calls.
(find_line_symtab): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
(file_matches): Replace filename_cmp by compare_filenames_for_search.
(print_symbol_info): Make the last parameter const char *. New
variable s_filename. Use it in the function.
(symtab_symbol_info): Make the last_filename variable const char *.
Replace symtab->filename refererences by symtab_to_filename_for_display
calls.
(rbreak_command): New variable fullname. Use it. Replace
symtab->filename refererence by symtab_to_filename_for_display call.
* tracepoint.c (set_traceframe_context, trace_find_line_command)
(print_one_static_tracepoint_marker): Replace symtab->filename
refererences by symtab_to_filename_for_display calls.
* tui/tui-source.c (tui_set_source_content): New variables filename and
s_filename. Replace symtab->filename refererences by this variable.
Replace other symtab->filename refererences by
symtab_to_filename_for_display calls.
Add a new variable that controls a way in which filenames are
displayed.
* NEWS (set filename-display): New entry.
* source.c (filename_display_basename, filename_display_relative)
(filename_display_absolute, filename_display_kind_names)
(filename_display_string, show_filename_display_string)
(symtab_to_filename_for_display): New.
(_initialize_source): Added initialization of 'filename-display'
variable.
* source.h (symtab_to_filename_for_display): Added declaration.
* stack.c (print_frame): Added new variable and calling of a new
function and condition with this variable. Changed third argument of
calling of a function.
gdb/doc/
* gdb.texinfo (Backtrace): Added description of 'filename-display'
variable in 'set/show backtrace' section.
gdb/testsuite/
* gdb.dwarf2/dw2-dir-file-name.exp: New file.
* gdb.dwarf2/dw2-dir-file-name.c: New file.
* tui/tui-data.c (init_win_info, tui_del_window, tui_free_window):
Rename field reference filename to fullname.
* tui/tui-data.h (struct tui_source_info): Rename field filename to
fullname. New comment for it.
* tui/tui-source.c (tui_set_source_content): Rename field reference
filename to fullname. Initialize field by symtab_to_fullname now.
* tui/tui-winsource.c (tui_update_breakpoint_info): Rename field
reference filename to fullname. Use symtab_to_fullname during
comparison.
Code cleanup.
* dwarf2read.c (dw2_expand_symtabs_with_filename): Rename to ...
(dw2_expand_symtabs_with_fullname): ... here. Rename parameter
filename to fullname. Rename variable this_name to this_fullname.
Lowercase FILENAME_CMP call.
(dw2_find_symbol_file): New comment for the returned string.
(dwarf2_gdb_index_functions): Rename the function to
dw2_expand_symtabs_with_fullname.
* psymtab.c (read_psymtabs_with_filename): Rename to ...
(read_psymtabs_with_fullname): ... here. Rename parameter filename to
fullname.
(psym_functions): Rename the function to read_psymtabs_with_fullname.
* symfile.h (struct quick_symbol_functions): Rename field
expand_symtabs_with_filename to expand_symtabs_with_fullname and its
parameter filename to fullname. Document returned string meaning for
find_symbol_file.
* symtab.c (find_line_symtab): Rename the called function to
expand_symtabs_with_fullname.
Code cleanup.
* breakpoint.c (clear_command): Remove variable is_abs, unify the
call of filename_cmp with compare_filenames_for_search.
* dwarf2read.c (dw2_map_symtabs_matching_filename): Remove variable
is_abs, unify the call of FILENAME_CMP with
compare_filenames_for_search. New gdb_asserts for real_path and name.
Unify the call of compare_filenames_for_search with FILENAME_CMP.
* psymtab.c (partial_map_symtabs_matching_filename): Likewise.
* symfile.h (struct quick_symbol_functions): Extend the comment for
map_symtabs_matching_filename.
* symtab.c (compare_filenames_for_search): Remove the function comment
relative path requirement. Handle absolute filenames, with a comment.
(iterate_over_some_symtabs): Remove variable is_abs, unify the call of
FILENAME_CMP with compare_filenames_for_search. New gdb_asserts for
real_path and name. Unify the call of compare_filenames_for_search
with FILENAME_CMP.
(iterate_over_symtabs): New gdb_assert on REAL_PATH.
gdb/testsuite/
* gdb.mi/mi-fullname-deleted.exp: Use double last slash for $srcfileabs.
(compare_filenames_for_search does not match)
(compare_filenames_for_search does match): New tests.
Code cleanup.
* breakpoint.c (print_breakpoint_location): Replace bp_location field
source_file references by symtab field references. Remove variables
sal and fullname.
(momentary_breakpoint_from_master, add_location_to_breakpoint):
(clear_command, say_where): Replace bp_location field source_file
references by symtab field references.
(bp_location_dtor): Remove the source_file reference.
(update_static_tracepoint): Replace bp_location field source_file
references by symtab field references.
(breakpoint_free_objfile): New function.
* breakpoint.h (struct bp_location): Extend the comment for line_number.
Replace the field source_file by field symtab, extend its comment.
(breakpoint_free_objfile): New declaration.
* objfiles.c (free_objfile): Call breakpoint_free_objfile.
* tui/tui-winsource.c (tui_update_breakpoint_info): Replace bp_location
field source_file references by symtab field references.
Replace xfullpath calls by gdb_realpath calls.
* cli/cli-cmds.c (find_and_open_script): Remove xfullpath from the
function comment.
* dwarf2read.c (dw2_map_expand_apply): Remove parameter full_path.
Remove it from the iterate_over_some_symtabs call.
(dw2_map_symtabs_matching_filename): Remove parameter full_path.
Remove it from the dw2_map_expand_apply calls, remove a block handling
it.
* psymtab.c (partial_map_expand_apply): Remove parameter full_path.
Remove it from the iterate_over_some_symtabs call.
(partial_map_symtabs_matching_filename): Remove parameter full_path.
Remove it from the partial_map_expand_apply calls, remove a block
handling it. Drop gdb_realpath call and cleanups from the real_path
handling.
* source.c (openp): Drop the comment part about xfullpath. Replace
xfullpath calls by gdb_realpath calls.
(find_and_open_source): Replace xfullpath call by gdb_realpath call.
* symfile.h (struct quick_symbol_functions): Remove parameter full_path
from method map_symtabs_matching_filename and its comment.
* symmisc.c (maintenance_print_msymbols): Replace xfullpath call by
gdb_realpath call.
* symtab.c (iterate_over_some_symtabs): Remove parameter full_path,
remove it also from the function comment, remove a block handling it.
Drop gdb_realpath call and cleanups from the real_path handling.
(iterate_over_symtabs): Drop variable full_path and its use.
* symtab.h (iterate_over_some_symtabs): Remove parameter full_path.
* utils.c (xfullpath): Remove.
* utils.h (xfullpath): Remove.
gdb/testsuite/
* gdb.gdb/xfullpath.exp: Replace xfullpath calls by gdb_realpath calls.
* Makefile.in (ALL_TARGET_OBS): Add ppc64-tdep.o.
(HFILES_NO_SRCDIR): Add ppc64-tdep.h.
(ALLDEPFILES): Add ppc64-tdep.c.
* configure.tgt (powerpc-*-linux* | powerpc64-*-linux*): Add
ppc64-tdep.o to gdb_target_obs.
* ppc64-tdep.h: New file.
* ppc64-tdep.c: New file.
(insn_d, insn_ds, insn_xfx, ppc64_desc_entry_point): Move from
ppc-linux-tdep.c to here.
(PPC64_STANDARD_LINKAGE1_LEN, PPC64_STANDARD_LINKAGE2_LEN)
(PPC64_STANDARD_LINKAGE2_LEN): Likewise and use ARRAY_SIZE macro.
(ppc64_standard_linkage1_target, ppc64_standard_linkage2_target)
(ppc64_standard_linkage3_target, ppc64_skip_trampoline_code): Move
from ppc-linux-tdep.c to here.
(ppc64_convert_from_func_ptr_addr): Rename from
ppc64_linux_convert_from_func_ptr_addr to
ppc64_convert_from_func_ptr_addr and move from ppc-linux-tdep.c to
here.
* rs6000-tdep.c:
(read_insn): Move from ppc-linux-tdep.c to here.
(insns_match_pattern, insn_d_field, insn_ds_field): Move
from ppc-linux-tdep.c to here and rename them with the ppc_ prefix.
* ppc-linux-tdep.c: Include ppc64-tdep.h.
Removed above functions.
(ppc_linux_init_abi): Adjust.
I noticed there are no users of deprecated_pc_in_call_dummy left in
the tree.
The last user was ARM. Usage removed here:
http://sourceware.org/ml/gdb-patches/2010-03/msg00820.html
This deletes the function.
2013-02-01 Pedro Alves <palves@redhat.com>
* dummy-frame.c (deprecated_pc_in_call_dummy): Delete function.
* frame.h (deprecated_pc_in_call_dummy): Delete declaration.
* elfread.c (elf_symfile_read): Limit separate debug info additions to
files with no separate debug info.
* objfiles.c (add_separate_debug_objfile): Add gdb_assert calls.
* symfile.c (read_symbols): Call find_separate_debug_file_in_section
only for files with no separate debug info.
gdb/testsuite/
* gdb.base/gnu-debugdata.exp): Create ${binfile}.debug,
${binfile}.mini_debuginfo-debuglink, add -k to xz, use now
${binfile}.mini_debuginfo-debuglink and
${binfile}.mini_debuginfo-debuglink.xz.
change type.
(struct jit_program_space_data): Rename from jit_inferior_data.
Update comments.
(get_jit_program_space_data): Rename from get_jit_inferior_data.
Change return type. Attach data to program space.
(jit_program_space_data_cleanup): Rename from
jit_inferior_data_cleanup; change argument type.
(jit_read_descriptor): Change 'inf_data' argument to 'ps_data',
change type.
(jit_register_code): Update.
(jit_update_inferior_cache): Remove.
(jit_breakpoint_deleted): Get jit data from the location's program
space.
(jit_breakpoint_re_set_internal): Rename 'inf_data' argument to
'ps_data', change type.
(jit_inferior_init, jit_breakpoint_re_set_internal)
(jit_event_handler): Update.
(free_objfile_data): Get data from objfile's program space.
(_initialize_jit): Update.
* jit.c (struct jit_inferior_data) <cached_code_address,
jit_breakpoint>: New fields.
(jit_breakpoint_re_set_internal): Fix logging. Only create
breakpoint if cached address has changed.
(jit_update_inferior_cache, jit_breakpoint_deleted): New
functions.
(_initialize_jit): Register breakpoint deleted observer.
gdb/testsuite
* gdb.base/jit.exp (compile_jit_test): New proc.
Add PIE tests.
Code cleanup.
* gdb.base/restore.exp: Replace gdb_compile, gdb_exit, gdb_start,
gdb_reinitialize_dir and gdb_load by standard_testfile, set executable
and prepare_for_testing.
* gdb.base/store.exp: Likewise.
* value.h: Remove unused argument 'lax' from the declaration of
find_overload_match.
* eval.c (value_subexp_standard): Do not pass a 'lax' argument
to find_overload_match.
* valarith.c (value_user_defined_cpp_op): Do not pass a 'lax'
argument to find_overload_match.
Yao writes:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GDB gets an internal error when it connects to GDBserver started with
'--disable-packet=qC'.
Sending packet: $QNonStop:0#8c...Packet received: OK
Sending packet: $?#3f...Packet received: T0505:00000000;04:00f0ffbf;08:b0c2e44c;thread:p4255.4255;core:1;
Sending packet: $Hc-1#09...Packet received: E01
Sending packet: $qC#b4...Packet received:
Sending packet: $qAttached:a410#bf...Packet received: E01
Packet qAttached (query-attached) is supported
warning: Remote failure reply: E01
Sending packet: $qOffsets#4b...Packet received:
../../../git/gdb/target.c:3248: internal-error: Can't determine the current address space of thread Thread 16981
When start remote, the call chain is as follows,
remote_start_remote
add_current_inferior_and_thread <--[1]
...
start_remote
wait_for_inferior
remote_wait_as
process_stop_reply
get_thread_arch_regcache <--[2]
remote_notice_new_inferior <--[3]
GDB sends packet "qC" in [1] and adds the thread/inferior if the remote
stubs understands "qC". In [2], GDB looks for the inferior to build a
regcache, and notices a new inferior in [3]. As we can see, GDB assumes
that the inferior can be found in [2]. Once the remote stub doesn't
support "qC", GDB can't look for the inferior in [2], and emits an
internal error.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Right after the initial connection, we query the target for its state,
with the ? packet. We store the resulting wait status / stop reply
aside, and query the target for the current thread, using qC, which
fails, so we fake a ptid for the target's thread. We then later,
after the initial setup, end up consuming that set-aside wait status,
parsing the T stop reply, which contains a "thread" "register" (which
was the thread the target would have replied to qC). We get into
trouble because the ptid in that stop reply doesn't match our faked up
ptid in the initial setup, although the target threads are the same...
So we had the T stop reply handy all along. We might as well extract
the thread's ptid from it, and avoid all the resulting issues.
qC is also used after vRun, in order to discover the new process'es
main thread. But, vRun's reply is also a wait status, just like
'?''s, which is quite convenient.
This means that if we have a "Txx thread: ptid" reply, then we don't
really need qC. The patch makes GDB look in the T reply first, and if
not found, try with qC. The packet handling seems to have been added
in gdb-4.18 (1999), and I see that in that same release, "Txx thread:
ptid" didn't exist yet, which probably explains why nobody though of
doing this before.
Regression tested against a gdbserver with qC disabled (and then
enabled), on x86_64 Fedora 17.
2013-01-25 Pedro Alves <palves@redhat.com>
* remote.c (stop_reply_extract_thread): New.
(add_current_inferior_and_thread): New parameter 'wait_status'.
Handle it.
(remote_start_remote): Pass wait status to
add_current_inferior_and_thread.
(extended_remote_run): Update comment.
(extended_remote_create_inferior_1): Pass wait status to
add_current_inferior_and_thread.
gdb/ChangeLog
* valarith.c (value_vector_widen): New function for replicating a
scalar into a vector.
(value_binop): Use value_vector_widen to widen scalar to vector
rather than casting, this better matches gcc C behaviour.
* valops.c (value_casst): Update logic for casting between vector
types, and for casting from scalar to vector, try to match gcc C
behaviour.
* value.h (value_vector_widen): Declare.
* opencl-lang.c (opencl_value_cast): New opencl specific casting
function, handle special case for casting scalar to vector.
(opencl_relop): Use opencl_value_cast.
(evaluate_subexp_opencl): Use opencl_value_cast instead of
value_cast, and handle BINOP_ASSIGN, UNOP_CAST, and UNOP_CAST_TYPE
in order to use opencl_value_cast.
gdb/testsuite/ChangeLog
* gdb.base/gnu_vector.c: New variable for use in tests.
* gdb.base/gnu_vector.exp: Update and extend tests to reflect
changes in scalar to vector casting and widening.
* gdb.python/py-type.c: New variables for use in tests.
* gdb.python/py-type.exp: Update vector related tests to reflect
changes in scalar to vector casting and widening.
* symtab.c (skip_prologue_using_sal): Consider a file
change the same as an increased line number
gdb/testsuite/
* gdb.base/prologue-include.c: New file.
* gdb.base/prologue-include.exp: New file.
* gdb.base/prologue-include.h: New file.
internal representation of architecture via GDB Python API.
* Makefile.in: Add entries corresponding to the new file
python/py-arch.c.
* NEWS (Python Scripting): Add entries for the new class
gdb.Architecture and the new method gdb.Frame.architecture.
* python/py-arch.c: Implement gdb.Architecture class.
* python/py-frame.c (frapy_arch): Implement the method
gdb.Frame.architecture().
(frame_object_methods): Add 'architecture' to the method table.
* python/python-internal.h: Add declarations of new utility
functions.
* python/python.c (_initialize_python): Initialize
gdb.Architecture class.
* doc/gdb.texinfo (Architectures In Python): New sub-sub-section
describing the gdb.Architecture class.
(Frames In Python): Add description about the new method
gdb.Frame.architecture().
* testsuite/gdb.python/frame.exp: Add a test for
gdb.Frame.architecture() method.
* dwarf2read.c (dwarf2_per_cu_data): Split imported_symtabs and
type_unit_group out of union s. All uses updated.
(read_index_from_section): Watch for index version 8.
(follow_die_sig): If using .gdb_index version <= 7, record the TU as
an imported symtab.
(write_psymtabs_to_index): Increment version number to 8.
doc/
* gdb.texinfo (Index Section Format): Document .gdb_index version 8.
bothering the frontend about it... This is the exact same check MI
does.
I also smoke tested Emacs 23 in gud-gdb mode, both annotations=2
and annotations=3. I didn't notice anything break.
gdb/
2013-01-22 Pedro Alves <palves@redhat.com>
* annotate.c (breakpoint_changed): Skip if breakpoint is not
user-visible.
gdb/testsuite/
2013-01-22 Pedro Alves <palves@redhat.com>
* gdb.base/annota1.exp (signal sent): No longer expect
breakpoints-invalid.
* gdb.cp/annota2.exp (continue until exit)
(watch triggered on a.x): Ditto.
observer_notify_breakpoints_changed calls. All, except the
init_raw_breakpoint one. But that one is actually wrong. The
breakpoint is being constructed at that point, and hasn't been placed
on the breakpoint chain yet. It would be better placed in
install_breakpoint, and I actually started out that way. But once the
annotate_breakpoints_changed are parallel to the observer calls, we
can fully move annotations to observers too.
One issue is that this changes the order of annotations a bit.
Before, we'd emit the annotation, and after call "mention()" on the
breakpoint (which prints the breakpoint number, etc.). But, we call
the observers _after_ mention is called, so the annotation output will
change a little:
void
install_breakpoint (int internal, struct breakpoint *b, int update_gll)
{
add_to_breakpoint_chain (b);
set_breakpoint_number (internal, b);
if (is_tracepoint (b))
set_tracepoint_count (breakpoint_count);
if (!internal)
mention (b);
observer_notify_breakpoint_created (b);
if (update_gll)
update_global_location_list (1);
}
I believe this order doesn't really matter (the frontend needs to wait
for the prompt anyway), so I just adjust the expected output in the
tests. Emacs in annotations mode doesn't seem to complain. Couple
that with the previous patch that suppressed duplicated annotations,
and, the fact that some annotations calls were actually missing (were
we do have observer calls), more changes to the tests are needed
anyway.
Tested on x86_64 Fedora 17.
gdb/
2013-01-22 Pedro Alves <palves@redhat.com>
* annotate.c (annotate_breakpoints_changed): Rename to ...
(annotate_breakpoints_invalid): ... this. Make static.
(breakpoint_changed): Adjust.
(_initialize_annotate): Always install the observers. Install a
"breakpoint_created" observer.
* annotate.h (annotate_breakpoints_changed): Delete declaration.
* breakpoint.c (set_breakpoint_condition)
(breakpoint_set_commands, do_map_commands_command)
(init_raw_breakpoint, clear_command, set_ignore_count)
(enable_breakpoint_disp): No longer call
annotate_breakpoints_changed.
gdb/testsuite/
2013-01-22 Pedro Alves <palves@redhat.com>
* gdb.base/annota1.exp (breakpoints_invalid): New variable.
Adjust tests to breakpoints-invalid changes.
* gdb.cp/annota2.exp (breakpoints_invalid, frames_invalid): New
variables.
Adjust tests to breakpoints-invalid changes.
handled, one of those being to place SSS breakpoints on the breakpoint
chain as all other breakpoints, annota1.exp times out with lots and
lots of breakpoint-invalid and frame-changed annotations. All those
extra annotations are actually unnecessary. For one, SSS breakpoints
are internal breakpoints, so the frontend shouldn't care if they were
added, removed or changed. Then, there's really no point in emitting
"breakpoints-invalid" or "frames-invalid" more than once between times
the frontend/user can actually issues GDB commands; the frontend will
have to wait for the GDB prompt to refresh its state, so emitting
those annotations at most once between prompts is enough. Non-stop or
async would complicate this, but no frontend will be using annotations
in those modes (one of goes of emacs switching to MI was non-stop mode
support, AFAIK). The previous patch reveals there has been an
intention in the past to suppress multiple breakpoints-invalid
annotations caused by ignore count changes. As the previous patch
shows, that's always been broken, but in any case, this patch actually
makes it work. The next patch will remove several annotation-specific
calls in breakpoint.c in favor of always using the breakpoint modified
& friends observers, and that causes yet more of these annotations,
because several calls to the corresponding annotate_* functions in
breakpoint.c are missing, particularly in newer code.
So all in all, here's a simple mechanism that avoids sending the same
annotation to the frontend more than once until gdb is ready to accept
further commands.
Tested on x86_64 Fedora 17.
2013-01-22 Pedro Alves <palves@redhat.com>
* annotate.c: Include "inferior.h".
(frames_invalid_emitted)
(breakpoints_invalid_emitted): New globals.
(async_background_execution_p): New function.
(annotate_breakpoints_changed, annotate_frames_invalid): Skip
emitting the annotation if it has already been emitted.
(annotate_display_prompt): New function.
* annotate.h (annotate_display_prompt): New declaration.
* event-top.c: Include annotate.h.
(display_gdb_prompt): Call annotate_display_prompt.
suppress multiple breakpoints-invalid annotations when the ignore
count of a breakpoint changes, up until the target actually stops.
But, the code is bogus:
void
annotate_breakpoints_changed (void)
{
if (annotation_level == 2)
{
target_terminal_ours ();
printf_unfiltered (("\n\032\032breakpoints-invalid\n"));
if (ignore_count_changed)
ignore_count_changed = 0; /* Avoid multiple break annotations. */
}
}
The "ignore_count_changed" flag isn't actually guarding the output of
the annotation at all. It would have been better written something
like:
void
annotate_breakpoints_changed (void)
{
if (annotation_level == 2 && !ignore_count_changed)
{
target_terminal_ours ();
printf_unfiltered (("\n\032\032breakpoints-invalid\n"));
ignore_count_changed = 0; /* Avoid multiple break annotations. */
}
}
but, it wasn't. AFAICS, that goes all the way back to the original
patch'es submission and check in, at
<http://sourceware.org/ml/gdb-patches/1999-q4/msg00106.html>. I
looked a tar of HP's wdb from 1999, and even though that contains
local changes in the annotate code, this suppression seems borked
there too to me.
The original patch added a test to supposedly exercise this
suppression, but, it actually doesn't. It merely tests that
"breakpoints-invalid" is output after "stopped", but doesn't check
whether the duplicates supression actually works (IOW, check that only
_one_ annotation is seen). I was going to simply delete the tests
too, but a following patch will eliminate the duplicates in a
different way (which I needed for a different reason), so instead, I'm
making the tests actually fail if a duplicate annotation is seen.
Worry not, the test doesn't actually fail! The reason is that
breakpoint.c does:
else if (b->ignore_count > 0)
{
b->ignore_count--;
annotate_ignore_count_change ();
bs->stop = 0;
/* Increase the hit count even though we don't stop. */
++(b->hit_count);
observer_notify_breakpoint_modified (b);
}
where the annotate_ignore_count_change call is meant to inform the
"breakpoint_modified" annotation observer to ignore the notification.
All sounds good. But, the trouble is that nowadays annotate.c only
installs the observers if GDB is started with annotations enabled with
a command line option (gdb --annotate=2):
void
_initialize_annotate (void)
{
if (annotation_level == 2)
{
observer_attach_breakpoint_deleted (breakpoint_changed);
observer_attach_breakpoint_modified (breakpoint_changed);
}
}
and annota1.exp, to enable annotations, starts GDB normally, and
afterwards does "set annotate 2", so the observers aren't installed
when annota1.exp is run, and therefore changing the ignore count isn't
triggering any annotation at all...
gdb/
2013-01-22 Pedro Alves <palves@redhat.com>
* annotate.c (ignore_count_changed): Delete.
(annotate_breakpoints_changed): Don't clear ignore_count_changed.
(annotate_ignore_count_change): Delete.
(annotate_stopped): Don't emit a delayed breakpoints-changed
annotation.
* annotate.h (annotate_ignore_count_change): Delete.
* breakpoint.c (bpstat_check_breakpoint_conditions): Don't call
annotate_ignore_count_change.
gdb/testsuite/
2013-01-22 Pedro Alves <palves@redhat.com>
* gdb.base/annota1.exp (annotate ignore count change): Add
expected output for failure case.
* breakpoint.c (print_one_breakpoint_location): Add MI
field 'thread-groups' when printing a breakpoint.
(output_thread_groups): New function.
2013-01-21 Marc Khouzam <marc.khouzam@ericsson.com>
* gdb.texinfo (GDB/MI Breakpoint Commands): Document new
'thread-groups' field when printing a breakpoint in MI.
2013-01-21 Marc Khouzam <marc.khouzam@ericsson.com>
* gdb.mi/mi-break.exp: Expect new 'thread-groups' field.
* gdb.mi/mi-nsmoribund.exp: Expect new 'thread-groups' field.
Also handle 'thread' field.
* gdb.mi/mi-simplerun.exp: Expect new 'thread-groups' field.
* gdb.mi/mi-watch.exp: Ditto.
* lib/mi-support.exp: Ditto.
(CompoundExplorer.explore_expr): Correct the name of a method
being invoked.
(ExploreTypeCommand.invoke): Add a missing 'return'.
* testsuite/gdb.python/py-explore.exp: Improve a test
* symfile.c (obsavestring): Remove.
* ada-exp.y: Use obstack_copy0, not obsavestring.
* ada-lang.c: Use obstack_copy0, not obsavestring.
* coffread.c: Use obstack_copy0, not obsavestring.
* cp-namespace.c: Use obstack_copy0, not obsavestring.
* dbxread.c: Use obstack_copy0, not obsavestring.
* dwarf2read.c: Use obstack_copy0, not obsavestring.
* jit.c: Use obstack_copy0, not obsavestring.
* mdebugread.c: Use obstack_copy0, not obsavestring.
* psymtab.c: Use obstack_copy0, not obsavestring.
* stabsread.c: Use obstack_copy0, not obsavestring.
* xcoffread.c: Use obstack_copy0, not obsavestring.
(start_symtab): Make 'name' and 'dirname' const. Use
set_last_source_file.
(restart_symtab, reset_symtab_globals): Use set_last_source_file.
(last_source_file): Define. Now static.
(set_last_source_file, get_last_source_file): New functions.
* buildsym.h (last_source_file): Don't declare.
(start_symtab): Update.
(set_last_source_file, get_last_source_file): Declare.
* coffread.c (complete_symtab): Use set_last_source_file.
(coff_end_symtab): Likewise.
(coff_symtab_read): Use set_last_source_file, get_last_source_file.
* dbxread.c (read_dbx_symtab, read_ofile_symtab): Use
set_last_source_file.
(process_one_symbol): Use get_last_source_file.
* mdebugread.c (parse_partial_symbols): Use set_last_source_file.
(psymtab_to_symtab_1): Use get_last_source_file.
* xcoffread.c (process_linenos): Use get_last_source_file.
(complete_symtab): Use set_last_source_file.
(read_xcoff_symtab): Use set_last_source_file, get_last_source_file.
(scan_xcoff_symtab): Use set_last_source_file.
Fix gdb.fortran/common-block.exp crash in PIE mode.
* dwarf2read.c (new_symbol_full) <DW_TAG_common_block>: Use
LOC_COMMON_BLOCK.
* f-valprint.c (info_common_command_for_block): Expect
LOC_COMMON_BLOCK in gdb_assert.
* symtab.h (struct general_symbol_info): Update comment for the
common_block member.
(domain_enum): Extend comment for the COMMON_BLOCK_DOMAIN member.
(enum address_class): New member LOC_COMMON_BLOCK.
* symtab.c (compare_filenames_for_search): New comment for
HAS_DRIVE_SPEC.
gdb/testsuite/
* gdb.dwarf2/dw2-dos-drive.S: New file.
* gdb.dwarf2/dw2-dos-drive.exp: New file.
* gdb.base/jit-reader.exp: New file. Test case for the jit-reader
interface.
* gdb.base/jithost.c: New file.
* gdb.base/jithost.h: New file.
* gdb.base/jitreader.c : New file.
* gdb.base/jit-protocol.h: New file.
Keith Seitz