* lin-lwp.c: Prevent thread starvation by using a monte carlo
method to choose which of several event threads to handle next.
(stop_wait_callback): Defer pushback of breakpoint events until
later; add SIGTRAP events to the queue of unhandled events.
Keep calling waitpid until SIGSTOP retrieved. If more than one
non-SIGSTOP event is retrieved, push them back onto the process
queue using kill.
(count_events_callback, select_singlestep_lwp_callback,
select_event_lwp_callback, cancel_breakpoints_callback,
select_event_lwp): New functions. Implement monte carlo method
for selecting which of several SIGTRAP threads to handle next.
Push back the breakpoint event for all threads other than the
selected one.
(lin_lwp_wait): Call select_event_lwp to decide which of several
sigtrapped lwps to handle next.
(resume_callback): Disable code that attempts to handle
step_resume breakpoints. Let core gdb handle this.
show_regs, d10v_read_pc, d10v_write_pc, d10v_read_sp,
d10v_write_sp, d10v_write_fp, d10v_read_fp,
d10v_push_return_address): Call the functions d10v_make_daddr,
d10v_make_iaddr, d10v_convert_iaddr_to_raw, and
d10v_convert_daddr_to_raw, not the global macros D10V_MAKE_DADDR,
D10V_MAKE_IADDR, D10V_CONVERT_IADDR_TO_RAW, and
D10V_CONVERT_DADDR_TO_RAW.
structure and not macros.
(Host Definition): Document that much of this chapter is obsolete.
(Target Architecture Definition): Update list of files that make
up a target architecture.
(Coding): Update.
(read_partial_die): Delete fourth argument; we return this info in
the struct partial_die_info object itself now.
(dwarf2_build_psymtabs_hard, scan_partial_symbols): Use the
has_pc_info field of the partial die struct, rather than passing a
variable by reference to read_partial_die.
code in loop condition. This seemed to be trying to round
info_ptr up to the next four-byte boundary, but that's not what it
actually did. If we discover the problem the old code was really
trying to address, we can fix it properly.
* thread-db.c (attach_thread): Check for TD_THR_ZOMBIE in addition
to TD_THR_UNKNOWN when looking for defunct zombie threads.
(thread_db_thread_alive): Ditto.
(find_new_threads_callback): Ditto.
(get_hex_word): Don't use HOST_BYTE_ORDER.
(array_fetch_registers): Add variable ``reg''. Use
store_unsigned_integer to byte-swap the register. Delete unused
local ``regs''.
* infrun.c (handle_inferior_event): Replace prev_pc test in all
calls to bpstat_stop_status (removed in 1999-09-24). This test
helps distinguish stepping over a breakpoint trap from stepping
thru a jump to the instruction after a breakpoint trap.
(handle_inferior_event): Don't bother writing the PC if
DECR_PC_AFTER_BREAK is zero (optimization).
* breakpoint.c (bpstat_stop_status): Add comment explaining the
purpose and usage of the "not_a_breakpoint" argument in computing
the breakpoint address.
* monitor.c (setmem_resp_delim_pattern): New regexp pattern.
(setreg_resp_delim_pattern): Likewise.
(setmem_resp_delim_fastmap): New buffer.
(setreg_resp_delim_fastmap): Likewise.
(monitor_open): Initialize above regexp if they are defined.
(monitor_write_memory): Use regexp to check the result of write.
(monitor_store_register): Likewise to check result of register set.
* infrun.c: Eliminate the "thread_step_needed" state variable,
and replace it with a relatively simple test in resume.
(resume): Replace thread_step_needed logic with a test for
stepping, breakpoint_here_p and breakpoints_inserted.
Move CANNOT_STEP_BREAKPOINT logic to after thread_step logic.
(proceed): Discard thread_step_needed logic.
(wait_for_inferior, fetch_inferior_event, handle_inferior_event):
Discard thread_step_needed logic.
* remote-rdi.c (arm_rdi_wait): Fix return type in prototype.
* rdi-share/host.h: Add missing parenthesis in conditional.
2001-06-22 J.T. Conklin <jtc@redback.com>
* configure.in: include nlist.h when checking for member som_addr
in struct so_map.
* configure: regenerate.
suppress_output.
(mi_begin, mi_end): Check suppress_header.
(mi_field_int, mi_field_skip): Ditto.
(mi_field_string, mi_field_fmt): Ditto.
(mi_table_begin): When nr_rows is zero, set suppress_header else,
output the start of the header.
(mi_table_body): Clear suppress header.
definitions. Generate an error when both pure multi-arch and
"tm.h".
* gdbarch.h, gdbarch.c: Regenerate.
* defs.h (GDB_MULTI_ARCH_TM): Rewrite definition.
* infrun.c (context_switch): New function. Abstract the operation
of saving and restoring infrun's state when switching threads.
(handle_inferior_event): Normalize the handling of the 'thread hop'
event (when the wrong thread hits a thread-specific breakpoint,
and we need to solo-step that thread past the breakpoint).
Call keep_going, instead of target_resume. Handle the subsequent
singlestep-trap as a normal event instead of just resuming.
(EXTRACT_STRUCT_VALUE_ADDRESS): Change to a function with
predicate.
* gdbarch.h, gdbarch.c: Regenerate.
* values.c (value_being_returned): Change the reference to
EXTRACT_STRUCT_VALUE_ADDRESS_P to a function call.
* remote.c (show_remote_protocol_qSymbol_packet_cmd,
set_remote_protocol_qSymbol_packet_cmd): New functions.
(init_all_packet_configs, show_remote_cmd): Add qSymbol packet.
(remote_check_symbols): New function. Implement qSymbol packet,
allowing target to request symbol lookup service from gdb.
(remote_open_1, remote_async_open_1): Call remote_check_symbols,
allowing symbol lookup from exec_bfd on connection to target.
(remote_new_objfile): New function. Catch new objfile notifications
from shared library module, and call remote_check_symbols.
(_initialize_remote): Hook remote_new_objfile into the shared
library notification chain. Add "set remote symbol-lookup" command.
* gdbthread.h (struct thread_info): Add new fields:
current_line, current_symtab, step_sp, for saved infrun state.
* thread.c (save_infrun_state, load_infrun_state): Save and
restore current_line, current_symtab, and step_sp.
(add_thread): Rather than adding assignments to initialize
the new fields, just use memset (tp, 0, sizeof (*tp).
This way future new fields will not be overlooked.
* infrun.c (handle_inferior_event): Save and restore save_sp,
current_line, and current_symtab when switching threads.
(line_completion_function): If we are completing on locations,
back up the start of word pointer past all characters which can
appear in a location spec.
(location_completer): New function.
* completer.h: Add prototype for location_completer.
* symtab.c (make_source_files_completion_list)
(add_filename_to_list, not_interesting_fname): New functions.
(filename_seen): New function, body extracted from
output_source_filename.
(output_source_filename): Call filename_seen to check if the file
was already printed.
(make_symbol_completion_list): If TEXT includes a
double-quoted string, return an empty list, not NULL.
(make_file_symbol_completion_list): New function, similar to
make_symbol_completion_list but with an additional argument
SRCFILE.
* symtab.h (make_file_symbol_completion_list)
(make_source_files_completion_list): Add prototypes.
* breakpoint.c (_initialize_breakpoint): Make location_completer
be the completion function for all commands which set breakpoints
and watchpoints.
(top-level): #include "completer.h".
* tracepoint.c (_initialize_tracepoint): Make location_completer
be the completion function for the "trace" command.
(top-level): #include "completer.h".
* printcmd.c (_initialize_printcmd): Make location_completer be
the completion function for the "print", "inspect", "call", and
"disassemble" commands.
(top-level): #include "completer.h".
* infcmd.c (_initialize_infcmd): Make location_completer be the
completion function for the "go", "jump", and "until" commands.
(top-level): #include "completer.h".
* breakpoint.c (delete_breakpoint): Pass mark_inserted to
remove_breakpoint, so that the subsequent test for
bpt->inserted will succeed, and duplicates will be fixed up.
a little more portable.
Don't use shell's echo command to put strings containing
escaped characeters into a file -- different flavors of /bin/sh
require differnt levels of escaping. Use cat <<EOF instead.
Our internal field separator is a colon. Change all
commands which assume it is a space.
(iterate_over_lwps): Make sure we can handle CALLBACK deleting the
LWP it's called for.
(lin_lwp_attach): Mark LWP as resumed to make sure the fake
SIGSTOP is reported.
(resume_clear_callback): New function.
(resume_set_callback): New function.
(lin_lwp_resume): Mark all LWP's that we're going to resume as
resumed, and unmark all others.
(status_callback): Only report a pending wait status if we pretend
that LP has been resumed.
(resumed_callback): New function.
(lin_lwp_wait): Add assertions to check that LWP's are properly
marked as resumed. Partially revert 2001-05-25 patch by Michael
Snyder: do not resume all threads. Add comment explaining the
problems associated with this bit of code.
* config/mips/irix6.mh: New file.
* config/mips/irix6.mt: New file.
* config/mips/xm-irix6.h: New file.
* config/mips/nm-irix6.h: New file.
* mips-tdep.c (mips_gdbarch_init) <MIPS_ABI_N32>: Set up the
disassembler info in tm_print_insn_info as appropriate for the N32
ABI. Force N32 ABI to be the default if the CPU is R8000 or
R10000.
* configure.tgt (mips*-sgi-irix6*): Map to irix6.
* configure.host (mips*-sgi-irix6*): Ditto.
* gdb.threads/pthreads.exp (check_control_c): Return 0 for success,
non-zero if control_c fails. Terminate the test on failure,
rather than wait for 12 more tests to time out.
stopped due to a Ctrl-C as well as breakpoints.
* hppa-tdep.c (hppa_prepare_to_proceed): Add FIXME as this may not
support thread switches after Ctrl-C.
* lin-lwp.c (lin_lwp_prepare_to_proceed): Ditto.
* linux-thread.c (linuxthreads_prepare_to_proceed): Ditto.
* m3-nat.c (mach3_prepare_to_proceed): Ditto.
instead of system-specific define's like _WIN32 and __MSDOS__.
Use IS_DIR_SEPARATOR and IS_ABSOLUTE_PATH instead of SLASH_P and
ROOTED_P.
(top-level): #include "filenames.h".
* solib.c (solib_open): Use IS_DIR_SEPARATOR and IS_ABSOLUTE_PATH
instead of SLASH_CHAR, ROOTED_P and SLASH_P.
(top-level): #include "filenames.h".
* defs.h (SLASH_P, SLASH_CHAR, ROOTED_P): Remove definitions.
(SLASH_STRING): Define only for _WIN32.
* completer.c: Use HAVE_DOS_BASED_FILE_SYSTEM instead of
__MSDOS_.
* cli/cli-cmds.c (cd_command): Use IS_DIR_SEPARATOR and
IS_ABSOLUTE_PATH instead of SLASH_P and ROOTED_P. Replace
system-specific ifdefs with HAVE_DOS_BASED_FILE_SYSTEM.
(top-level): #include "filenames.h".
* config/djgpp/fnchange.lst: Add two new files in the
gdb/testsuite/gdb.c++/ directory to the remapped names.
* config/djgpp/djconfig.sh (lt_cv_sys_max_cmd_len): Set to 12KB.
than requiring that all per-architecture data be registered before
the first gdbarch object is allocated.
* gdbarch.sh: Changes to effect the following:
* gdbarch.c (alloc_gdbarch_data, init_gdbarch_data): Delete
declarations and definitions.
(check_gdbarch_data): New function, and declaration.
(gdbarch_alloc): Don't call alloc_gdbarch_data; leaving the fields
zero is good enough.
(free_gdbarch_data): Tolerate a null data pointer. Free only
those data items gdbarch->data actually has allocated.
(set_gdbarch_data, gdbarch_data): Call check_gdbarch_data.
(gdbarch_update_p): No need to call init_gdbarch_data.
* thread.c (delete_step_resume_breakpoint): New function.
Maintain internal consistency of the thread list while deleting
a step_resume_breakpoint.
* gdbthread.h (delete_step_resume_breakpoint): Export.
* breakpoint.c (bpstat_find_step_resume_breakpoint):
Make thread-aware: don't return a step_resume_breakpoint
for the wrong thread.
* infrun.c (wait_for_inferior): Call delete_step_resume_breakpoint
instead of delete_breakpoint_current_contents.
(fetch_inferior_event): Ditto.
(handle_inferior_event): Call delete_step_resume_breakpoint
instead of delete_breakpoint.
* infrun.c (handle_inferior_event): After singlestepping over a
thread-specific breakpoint, use currently_stepping() to decide
whether to step or continue.
* lin-lwp.c (lin_lwp_attach_lwp): Call stop_wait_callback,
to consume the SIGSTOP generated by PTRACE_ATTACH.
(stop_wait_callback): If a SIGTRAP or a SIGINT event is consumed,
try again to get the SIGSTOP event.
(lin_lwp_wait): Resume all threads when ignoring a signal.
This will insure that newly attached threads get resumed.
