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.
gc-section support.
(elf64_aarch64_gc_sweep_hook): Handle GOT, TLS and PLT related relocs.
* lib/ld-lib.exp (check_gc_sections_available): Remove aarch64
from list of
targets that don't support gc-section.
* elf.c (elfcore_write_s390_tdb): New function.
(elfcore_write_register_note): Call it.
(elfcore_grok_s390_tdb): New function.
(elfcore_grok_note): Call it.
* readelf.c (get_note_type): Add NT_S390_TDB.
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.
* write.h (struct fix): Add fx_dot_frag field.
(dot_frag): Declare.
* write.c (dot_frag): New variable.
(fix_new_internal): Set fx_dot_frag field with dot_frag.
(fixup_segment): Base calculation of fx_offset with fx_dot_frag.
* expr.c (expr): Save value of frag_now in dot_frag when setting
dot_value.
* read.c (emit_expr): Likewise. Delete comments.
$ 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.
