mips_skip_stub, mips_ignore_helper): New functions for dealing
with MIPS16 call/return thunks.
(mips_init_frame_pc_first): New function to implement
INIT_FRAME_PC_FIRST macro; includes code from old macro plus
new code to skip over MIPS16 thunks.
(mips_frame_chain): Skip over MIPS16 thunks.
* config/mips/tm-mips.h (mips_in_call_stub, mips_in_return_stub,
mips_skip_stub, mips_ignore_helper): Declare.
(IN_SOLIB_CALL_TRAMPOLINE, IN_SOLIB_RETURN_TRAMPOLINE,
SKIP_TRAMPOLINE_CODE, IGNORE_HELPER_CALL): New macros that invoke
the above functions.
(INIT_FRAME_PC_FIRST): Change to invoke mips_init_frame_pc.
(mips_init_frame_pc): Declare.
* infrun.c (wait_for_inferior): Use new IGNORE_HELPER_CALL macro
to decide if certain library function calls should be ignored.
infrun.c, mac-nat.c, procfs.c, remote.c, sol-thread.c, thread.c,
win32-nat.c, config/nm-lynx.h: Rename thread.h to gdbthread.h to
avoid conflict with Solaris /usr/include/thread.h.
returns a possibly modified pid.
* inftarg.c (ptrace_him): Now returns pid;
* m3-nat.c (m3_trace_him): Now returns pid;
* infcmd.c (run_command): Minor cleanup.
* infrun.c (wait_for_inferior): Add another check for one_stepped
near where we read the pc to avoid erroneously setting
random_signal for multi-threaded support.
* procfs.c: Add support for Solaris LWPs. Remove def of
LOSING_POLL. Many cleanups... Several workarounds for Solaris
lossage. System call entry and exit are now handled by
dynamically registered handlers.
* (syscallname): Don't barf when handed an unknown syscall
number.
* (info_proc_syscalls): Ditto.
* sol-thread.c: New file. Implements Solaris thread support.
* symfile.c (symbol_file_add): Add call to target_new_objfile to
notify target-dependent code about new symbol tables.
* (clear_symtab_users): Call target_new_objfile to notify it of
the removal of all symbol tables.
* target.c (push_target): Make sure that to_close is non-zero
before calling it.
* target.h (target_new_objfile): Provide default.
* config/alpha/nm-osf2.h: Define LOSING_POLL because this version
of OSF can't hack using poll with /proc.
* config/sparc/nm-sun4sol2.h (target_new_objfile): Define to be
sol-thread-new-objfile.
* config/sparc/sun4sol2.mh: Add sol-thread.o to NATDEFFILES, and
add libthread_db.so.1 to NAT_CLIBS.
* config/sparc/tm-sun4sol2.h: Define PIDGET, TIDGET, and
target_pid_to_str.
outside of #ifdef conditionals. Don't trash the wait status
if we get a signal and the current instruction is nullified.
Fixes long standing problem on the PA (spurious SIGTRAPs)..
* breakpoint.c (breakpoint_re_set_one): Keep temporary
breakpoints bp_until, bp_finish, bp_watchpoint_cope, bp_call_dummy
and bp_step_resume in case breakpoint_re_set_one is called due
to a step over a dlopen call.
* infrun.c (wait_for_inferior): Always remove breakpoints from
inferior in BPSTAT_WHAT_CHECK_SHLIBS case.
* infrun.c (wait_for_inferior): Remove breakpoints and
switch terminal settings before calling SOLIB_ADD.
* solib.c (enable_break, SVR4 variant): Don't map in symbols
for the dynamic linker, the namespace pollution causes real
problems.
All references changed.
* breakpoint.c (bpstat_what): Add shlib_event to the class types.
Update state table. Reformat so that it's still readable.
When we hit the shlib_event breakpoint, set the calss of shlib_event.
(breakpoint_1): Add "shlib events" as a breakpoint type.
Print the shlib_event breakpoint like other breakpoints.
(create_solib_event_breakpoint): New function.
(breakpoint_re_set_one): Handle solib_event breakpoints.
* breakpoint.h (enum bytype): Add bp_shlib_event breakpoint type.
(enum bpstat_what_main_action): Add BPSTAT_WHAT_CHECK_SHLIBS
action.
(create_solib_event_breakpoint): Declare.
* infrun.c (wait_for_inferior): Handle CHECK_SHLIBS bpstat.
(normal_stop): Inform the user when the inferior stoped due
to a shared library event.
(_initialize_infrun): Add new set/show variable "stop_on-solib-events"
to control whether or not gdb continues the inferior or stops it when
a shared library event occurs.
* minsyms.c (lookup_minimal_symbol_solib_trampoline): New function.
* somsolib.c (TODO list): Update.
(som_solib_create_inferior_hook): Arrange for gdb to be notified
when significant shared library events occur.
* hppa-tdep.c (find_unwind_entry): No longer static.
First cut at the machine independent changes for 7363. Also includes
code to automatically track shl_load/shl_unload calls on hpux.
the step range test. Replace call detection test with much
simpler (and more efficient) test that doesn't require prologue
examination (as often).
* symtab.c symtab.h (in_prologue): New function that indicates
whether or not we are in a function prologue. This uses the
symbol table, and then falls back to prologue examination if that
fails. It's much more efficient for remote debugging because it
avoids examining memory, which is very slow. This is used in
wait_for_inferior to determine if we've made a function call that
needs to be skipped over (for next/nexti).
* mips-tdep.c (after_prologue): New function, returns the PC
after the prologue. Uses PDRs and the symbol table.
(mips_find_saved_regs): Use in_prologue() to avoid costly
prologue examination if possible.
(mips_skip_prologue): Use after_prologue() if possible to avoid
costly prologue examination.
wrong thread, make sure to write the fixed PC value into the thread
that stopped. Restart all threads after single stepping over a
breakpoint for a different thread.
* breakpoint.c (set_momentary_breakpoint): Make momentary
breakpoints thread specific in a multi-threaded program.
* lynx-nat.c (child_resume): Add some comments. Correctly
choose between the single and multi-threaded step and continue
ptrace calls.
Some of the lynx-6100 single stepping fixes.
trap_expected_after_continue.
* (wait_for_inferior): Fix for remote watchpoints. Don't try to
insert breakpoints while target is running (this only works on
*some* native targets). This may also speed up native watchpoints
considerably.
match stubs and protocol spec.
* gdbserver/remote-utils.c (remote_open): Cast to struct sockaddr
when passing to function which expects that.
The following changes aren't quite enough to make things work with
LynxOS (apprently kernel problems).
* infrun.c (wait_for_inferior): When resuming new thread, pass pid
not -1 for remote case.
* thread.c (info_threads_command): Give error if !target_has_stack.
* infrun.c (start_remote): Call init_thread_list.
* thread.c (info_threads_command): Don't call kill for remote
debugging target.
* target.c (normal_pid_to_str): Print "thread" not "process" for
remote.
* remote.c, gdbserver/*: Add 'H', 'S', and 'C' requests, 'X'
response, and `thread' part of 'T' response.
* gdbserver/*: If program exits, send packet to GDB before
exiting. Handle termination with a signal the same as exiting
with an exitstatus.
* remote.c: Don't try to kill program after getting an 'X'
response.
* infrun.c (wait_for_inferior): Add comment about kill versus mourn.
target_wait_hook to allow GUI to handle blocking for inferior. Call
call_command_hook in execute_command to provide means for wrapping
commands with GUI state change updates.
* gdbtk.c (gdb_cmd): Force GUI into idle mode when errors occur.
* (gdb_stop): New tcl command to stop the target process.
* (x_event, gdbtk_wait): Allow GUI to interrupt gdb out of target
waits.
* (gdbtk_call_command): Wrapper around command processing to
alert GUI of target state changes.
* (gdbtk_init): Get the fd of X server for doing async
notification of X events (via x_event). Setup new hooks.
* gdbtk.tcl: Add scrollbars to assembly and command windows.
* Change window foreground & background colors.
* Create margin tag for breakpoints in source and assembly windows.
* Add new routines to be invoked when target state changes to/from
idle.
* Add start of expression window.
* Change bindings of mouse button 1 in assembly and source window
to just set or clear breakpoints when in the margin tag.
* Change shape of register window to be more vertical to better
reflect it's contents.
* Add stop button.
* Cleanup some code around command window bindings.
* infrun.c (wait_for_inferior): Make sure
through_sigtramp_breakpoint is non-null before deleting.
names mean end of .o file.
* infrun.c (wait_for_inferior): Clean up multi-thread logic near
top of routine. Handle new thread notification cleanly.
* lynx-nat.c (child_wait): General cleanups, handle new LynxOS
thread notification scheme.
* (child_resume): General cleanups, handle resumption of all
threads properly.
Hardware watchpoints for Linux, from Rick Sladkey
(jrs@world.std.com).
* infrun.c (wait_for_inferior) [HAVE_CONTINUABLE_WATCHPOINT]: Add
new hardware breakpoint recovery method.
* i386v-nat.c (i386_insert_watchpoint,
i386_insert_nonaligned_watchpoint, i386_remove_watchpoint,
i386_stopped_by_watchpoint) [TARGET_CAN_USE_HARWARE_WATCHPOINT]:
New functions to support the 386 hardware debugging registers.
* config/i386/nm-linux.h (TARGET_CAN_USE_HARDWARE_WATCHPOINT,
HAVE_CONTINUABLE_WATCHPOINT, STOPPED_BY_WATCHPOINT,
target_insert_watchpoint, target_remove_watchpoint): Define these
macros to use the hardware debugging functions in i386v-nat.c.
bp_watchpoint_scope breakpoints.
(struct breakpoint): Add val_chain and related_breakpoint fields
for use by watchpoints.
* breakpoint.c (within_scope): Delete. No longer used.
(TARGET_CAN_USE_HARDWARE_WATCHPOINT): Provide default definition.
(target_{remove,insert}_watchpoint): Likewise.
(can_use_hardware_watchpoint): New function.
(remove_breakpoint): New function to remove a single breakpoint
or hardware watchpoint.
(insert_breakpoints): Handle insertion of hardware watchpoints.
Store a copy of the value chain derived from the watchpoint
expression.
(remove_breakpoints): Simplify by using remove_breakpoint.
(delete_breakpoint): Likewise.
(watchpoint_check): Delete the watchpoint and watchpoint scope
breakpoints when the watchpoint goes out of scope. Save & restore
the current frame after checking watchpoints.
(breakpoint_init_inferior): Likewise (restarting the program
makes all local watchpoints go out of scope).
(bpstat_stop_status): Handle hardware watchpoints much like normal
watchpoints. Delete the watchpoint and watchpoint scope breakpoint
when the watchpoint goes out of scope. Remove and reinsert all
breakpoints before returning if we stopped when a hardware watchpoint
fired.
(watch_command): Use a hardware watchpoint when possible. If
watching a local expression, build a scope breakpoint too.
(map_breakpoint_numbers): Also call given function for any
related breakpoints.
(disable_breakpoint): Never disable a scope breakpoint.
(enable_breakpoint): Handle hardware breakpoints much like normal
breakpoints, but recompute the watchpoint_scope breakpoint's
frame and address (if we have an associated scope breakpoint).
(read_memory_nobpt): Handle hardware watchpoints like normal
watchpoints. When necessary handle watchpoint_scope breakpoints.
(print_it_normal, bpstat_what, breakpoint_1, mention): Likewise.
(clear_command, breakpoint_re_set_one, enable_command): Likewise.
(disable_command): Likewise.
* blockframe.c (find_frame_addr_in_frame_chain): New function.
Extern prototype added to frame.h
* infrun.c (wait_for_inferior): Set current_frame and select
a frame before checking if we stopped due to a hardare watchpoint
firing. Handle stepping over hardware watchpoints.
(normal_stop): Remove unnecessary call to select_frame.
* value.h (value_release_to_mark): Declare.
* values.c (value_release_to_mark): New function.
* procfs.c (procfs_wait): Add cases for hardware watchpoints.
(procfs_set_watchpoint, procfs_stopped_by_watchpoint): New functions.
* hppab-nat.c (hppa_set_watchpoint): New function.
* config/pa/nm-hppab.h (STOPPED_BY_WATCHPOINT): Define.
(HAVE_STEPPABLE_WATCHPOINT): Define.
(TARGET_CAN_USE_HARDWARE_WATCHPOINT): Define.
(target_{insert,delete}_watchpoint): Define.
are in the .plt section.
* minsyms.c (lookup_solib_trampoline_symbol_by_pc,
find_solib_trampoline_target): New functions for handling
stepping into -g compiled shared libraries.
* symtab.h (lookup_solib_trampoline_symbol_by_pc,
find_solib_trampoline_target): Add prototypes.
* config/tm-sunos.h (IN_SOLIB_TRAMPOLINE, SKIP_TRAMPOLINE_CODE):
Define to handle stepping into -g compiled shared libraries.
* config/tm-sysv4.h (SKIP_TRAMPOLINE_CODE): Define to handle
stepping into -g compiled shared libraries.
* configure.in: Add mips-*-sysv4* support.
* config/mips/mipsv4.mh, config/mips/mipsv4.mt,
config/mips/tm-mipsv4.h, config/mips/xm-mipsv4.h, mipsv4-nat.c:
New files for MIPS SVR4 support.
* Makefile.in: Update for new mipsv4 files.
* alpha-tdep.c (heuristic_proc_desc, find_proc_desc): Use
read_next_frame_reg to obtain the frame relative stack pointer.
* mips-tdep.c (heuristic_proc_desc): Use read_next_frame_reg to
obtain the frame relative stack pointer.
* mdebugread.c (parse_partial_symbols, psymtab_to_symtab1):
Handle stStatic and stStaticProc symbols in stabs-in-ecoff output
by entering them into the minimal symbol table.
* printcmd.c (print_scalar_formatted): Do not try to unpack to
a long for float formats.
* solib.c: Include "elf/mips.h" only if DT_MIPS_RLD_MAP does not
get defined in <link.h>.
* solib.c (solib_add): Add shared library sections to the section
table of the target before adding the symbols.
* partial-stab.h: Relocate static and global functions.
* dbxread.c (read_dbx_symtab): Remove unused variable
end_of_text_address. Relocate text_addr when passing it
to end_psymtab.
For Alpha OSF/1 targets, enable gdb to set breakpoints in shared
library functions before the executable is run. Retrieve dynamic
symbols from stripped executables.
* mipsread.c (read_alphacoff_dynamic_symtab): New function.
* mipsread.c (mipscoff_symfile_read): Use it. Issue warning message
if no debugging symbols were found.
* alpha-tdep.c (alpha_skip_prologue): Silently return the unaltered
pc if memory at the pc is not accessible and GDB_TARGET_HAS_SHARED_LIBS
is defined.
* config/alpha/nm-alpha.h (GDB_TARGET_HAS_SHARED_LIBS): Define,
OSF/1 has shared libraries.
(bpstat_what_main_action): New code BPSTAT_WHAT_THROUGH_SIGTRAMP.
* breakpoint.c (bpstat_what): Return BPSTAT_WHAT_THROUGH_SIGTRAMP
if we hit a bp_through_sigtramp breakpoint. Remove kludge which
ignored bs->stop for a bp_step_resume breakpoint.
* infrun.c (wait_for_inferior): Make a through_sigtramp_breakpoint
which performs one (the check_sigtramp2 one) of the functions
which had been handled by the step_resume_breakpoint. For each
use of the step_resume_breakpoint, make it still use the
step_resume_breakpoint, use the through_sigtramp_breakpoint, or
operate on both.
Deal with BPSTAT_WHAT_THROUGH_SIGTRAMP return from bpstat_what.
When setting the frame address of the step resume breakpoint, set
it to the address for frame *before* the call instruction is
executed, not after.
in case execution was stopped in the called function.
* stack.c (print_frame_info, frame_info): If backtracing through
a call dummy, handle the starting source line number on a line
boundary like backtracing through sigtramp.
* sparc-tdep.c (sparc_frame_find_saved_regs): Get frame address
for call dummy frame right. Remove old test for dummy frame,
it has been unused at least since gdb-3.5.
* sparc-tdep.c (sparc_push_dummy_frame): Set return address register
of the dummy frame.
* target.c (store_waitstatus): Add CHILD_SPECIAL_WAITSTATUS hook.
* infrun.c (wait_for_inferior): Replace SIGTRAP_STOP_AFTER_LOAD with
code which looks for those two waitkinds. Use switch statement.
* config/rs6000/tm-rs6000.h: Replace SIGTRAP_STOP_AFTER_LOAD with
CHILD_SPECIAL_WAITSTATUS.
struct target_waitstatus. Change status argument to target_wait to
be struct target_waitstatus * instead of int *.
* target.h, infrun.c, all targets: Change type of signal arguments
to resume(), proceed(), and target_resume() from int to enum
target_signal.
* All targets (*_wait, *_resume): Change accordingly.
* infcmd.c (program_info, signal_command), throughout infrun.c,
* fork-child.c, solib.c, hppa-tdep.c, osfsolib.c: Use this stuff.
* convex-xdep.c, convex-tdep.c: Add FIXME's (getting the Convex
signal code stuff right with the new signals would be non-trivial).
* inferior.h (stop_signal): Make it enum target_signal not int.
* target.c, target.h (target_signal_to_string, target_signal_to_name,
target_signal_from_name): New functions.
* inftarg.c, target.h (target_signal_to_host, target_signal_from_host,
store_waitstatus): New functions.
* procfs.c (procfs_notice_signals): Use them.
* i960-tdep.c (i960_fault_to_signal): New function, to replace
print_fault.
* config/i960/tm-i960.h: Don't define PRINT_RANDOM_SIGNAL.
* infrun.c (wait_for_inferior): Remove confusing and inaccurate
stuff about subroutine calls, return, etc., from comment which
says "We've wandered out of the step range.".
Sun Dec 26 09:18:10 1993 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
* infrun.c (wait_for_inferior): When checking whether the line has
changed, check the symtab as well.
Change all references to stdout/stderr to gdb_stdout/gdb_stderr.
Replace all calls to stdio output functions with calls to
corresponding _unfiltered functions (`fprintf_unfiltered')
Replaced calls to fopen for output to gdb_fopen.
Added sufficient goo to utils.c and defs.h to make the above work.
The net effect is that stdio output functions are only directly used
in utils.c. Elsewhere, the _unfiltered and _filtered functions and
GDB_FILE type are used.
In the near future, GDB_FILE will stop being equivalant to FILE.
The semantics of some commands has changed in a very subtle way:
called in the right context, they may cause new occurences of
prompt_for_continue() behavior. The testsuite doesn't notice anything
like this, though.
Please respect this change by not reintroducing stdio output
dependencies in the main body of gdb code. All output from commands
should go to a GDB_FILE.
Target-specific code can still use stdio directly to communicate with
targets.
the top of the file, making them more concise and moving them with
the code (Sorry, Randy, but these stream-of-consciousness comments
really have to go). Switch the order of the "&&", which makes
things clearer and turns out to be an improvement with respect to
side effects and speed.
New functions.
* infrun.c (normal_stop): Don't try and set the pc in the current
frame coredump if there isn't one.
* remote-sim.c (gdbsim_store_register): Don't
SWAP_TARGET_AND_HOST, sim_store_register takes bytes in raw order.
(gdbsim_wait): Set status with WSETSTOP.
* config/h8300/tm-h8300.h (sr_get_debug): Define
PSYMTAB_TO_SYMTAB, call target_terminal_ours_for_output first.
This is needed now that wait_for_inferior passes in endaddr.
* infrun.c: Move call to target_terminal_inferior from proceed
to resume.
beyond the end of the last function in an objfile.
* coff-solib.c (coff_solib_add): Use BFD to get fields from .lib
section.
* infrun.c (wait_for_inferior): Modify test for subroutine entry
to include pc out of bounds of the previous function.
* remote.c (remote_wait): Use strtoul for parsing 'N' message.
Add code to relocate symfile_objfile->sections.
that clears the `inserted' flag for all breakpoints and deletes
any breakpoints which should go away between runs of programs.
* inflow.c (generic_mourn_inferior), infrun.c (init_wait_for_inferior),
remote-es.c (es1800_load), comments in exec.c and corelow.c:
Use it instead of mark_breakpoints_out.
* breakpoint.c (mark_breakpoints_out): Update comment, tm-rs6000.h
uses it in a completely different context.
* breakpoint.c (breakpoint_re_set_one): Add bp_call_dummy case.
* alpha-nat.c, alpha-tdep.c, config/alpha/alpha-osf1.mt,
config/alpha/nm-alpha.h, config/alpha/tm-alpha.h, osfsolib.c:
New files.
* Makefile.in: Add new files and dependencies.
* configure.in: Add alpha target.
* config/alpha/alpha-osf1.mh (NATDEPFILES): Add osfsolib.o
* config/alpha/alpha-osf1.mh (MH_CFLAGS): Remove, we can handle
shared libraries now.
* config/alpha/xm-alpha.h: Cleanup, get MAKEVA_* defines right.
* defs.h (CORE_ADDR): Make its type overridable via CORE_ADDR_TYPE,
provide `unsigned int' default.
* breakpoint.c (breakpoint_auto_delete): Delete only if we really
stopped for the breakpoint.
* stabsread.c, stabsread.h (define_symbol): Change valu parameter
to a CORE_ADDR.
* stabsread.c (read_range_type): Handle the case where the lower
bound overflows and the upper doesn't and the range is legal.
* infrun.c (resume): Do not step a breakpoint instruction if
CANNOT_STEP_BREAKPOINT is defined.
* inferior.h (CALL_DUMMY_LOCATION): New variant AT_ENTRY_POINT.
Now that we have the bp_call_dummy breakpoint the call dummy code
is no longer needed. PUSH_DUMMY_FRAME, PUSH_ARGUMENTS and
FIX_CALL_DUMMY can be used to set up everything for the dummy.
The breakpoint for the dummy is set at the entry point and thats it.
* blockframe.c (inside_entry_file, inside_entry_func): Do not stop
backtraces if pc is in the call dummy at the entry point.
* infcmd.c (run_stack_dummy): Handle AT_ENTRY_POINT case. Use
the expected breakpoint pc when setting up the frame for
set_momentary_breakpoint.
* symfile.c (entry_point_address): New function for AT_ENTRY_POINT
support.
* valops.c (call_function_by_hand): Handle AT_ENTRY_POINT case.
Some of the following is in #ifdef CALL_DUMMY_BREAKPOINT_OFFSET.
* breakpoint.h (enum bptype): Add bp_call_dummy.
(struct bpstat_what): Add call_dummy field.
* infrun.c (wait_for_inferior): Deal with it.
* breakpoint.c (bpstat_what): Deal with call dummy breakpoint.
* infcmd.c (run_stack_dummy): Set the call dummy breakpoint.
* config/sparc/tm-sparc.h: Define CALL_DUMMY_BREAKPOINT_OFFSET.
step_resume_break_address with step_resume_breakpoint (now local
to wait_for_inferior).
({insert,remove}_step_breakpoint): Remove.
(wait_for_inferior): Set step resume break with
set_momentary_breakpoint. Test hitting it with bpstat_stop_status
and bpstat_what (stop_step_resume_break removed).
* breakpoint.{h,c}, infrun.c: Return value from bpstat_what now struct
which includes previous return value as main_action, and a step_resume
bit.
* breakpoint.c (delete_breakpoint): If breakpoint was inserted, and
there is another breakpoint there, insert it.
* infrun.c (wait_for_inferior): Rearrange the spaghetti a bit. Use
a few more gotos.
Various: Clean up and add comments.
step_resume_break_address with step_resume_breakpoint (now local
to wait_for_inferior).
({insert,remove}_step_breakpoint): Remove.
(wait_for_inferior): Set step resume break with
set_momentary_breakpoint. Test hitting it with bpstat_stop_status
and bpstat_what (stop_step_resume_break removed).
* breakpoint.{h,c}, infrun.c: Return value from bpstat_what now struct
which includes previous return value as main_action, and a step_resume
bit.
* breakpoint.c (delete_breakpoint): If breakpoint was inserted, and
there is another breakpoint there, insert it.
* infrun.c (wait_for_inferior): Rearrange the spaghetti a bit. Use
a few more gotos.
Various: Clean up and add comments.
