* gdb.base/sigstep.exp (breakpoint_to_handler_entry)
(skip_to_handler_entry): New procedures. Test stepping into a
handler when the breakpoint is at the handler's entry point.
Fix PR breakpoints/1757.
* infrun.c (struct execution_control_state): Replace
remove_breakpoints_on_following_step with
step_after_step_resume_breakpoint.
(init_execution_control_state): Update.
(handle_inferior_event): For signals, when stepping off a
breakpoint, set step_after_step_resume_breakpoint. When
BPSTAT_WHAT_STEP_RESUME, do a single-step off the breakpoint.
(keep_going): Delete code handling
remove_breakpoints_on_following_step.
Index: testsuite/ChangeLog
2004-08-30 Andrew Cagney <cagney@gnu.org>
* gdb.base/sigstep.exp (breakpoint_over_handler): Remove kfail
gdb/1757.
With code from Manoj Iyer <manjo@austin.ibm.com>:
* lib/gdb.exp (gdb_file_cmd): Return more information in the
return value. Add an arm for "no debugging symbols found".
Change a stray "error" to "perror".
(gdb_run_cmd): Adapt to new return value.
* gdb.base/remote.exp: Adapt to new return value.
* gdb.gdb/complaints.exp: Likewise.
* gdb.gdb/observer.exp: Likewise.
* gdb.gdb/selftest.exp: Likewise.
* gdb.gdb/xfullpath.exp: Likewise.
(dbx_link_shadow_contents): New static global variable.
(procfs_wait, case <PR_SYSEXIT>): Handle syssgi events.
(procfs_wait, case <FLTBPT>): Remove the __dbx_link brekapoint
if we just hit it.
(procfs_init_inferior): Enable syssgi() syscall trace if appropriate.
Reset dbx_link_bpt_addr as the address of __dbx_link() may change
from run to run.
(procfs_create_inferior): Remove syssgi syscall-exit notifications
after the inferior has been forked.
(remove_dbx_link_breakpoint): New function.
(dbx_link_addr): New function.
(insert_dbx_link_bpt_in_file): New function.
(insert_dbx_link_bpt_in_region): New function.
(insert_dbx_link_breakpoint): New function.
(proc_trace_syscalls_1): New function, extracted from
proc_trace_syscalls.
(proc_trace_syscalls): Replace extract code by call to
proc_trace_syscalls_1.
* solib-irix.c (disable_break): Remove stop_pc assertion, as it
is no longer valid.
* gdb.base/sigstep.exp (breakpoint_to_handler, skip_to_handler)
(skip_over_handler, breakpoint_over_hander): New test procedures.
(advance, advancei): Add a proper prefix, do not use
rerun_to_main.
* gdb.base/sigstep.c (main): Change to use an infinite loop.
* infrun.c (struct execution_control_state): Delete field
"stepping_through_sigtramp".
(init_execution_control_state): Do not set same.
(context_switch): Do not pass same to save_infrun_state and
load_infrun_state.
* gdbthread.h (struct thread_info): Delete field
stepping_through_sigtramp.
(save_infrun_state, load_infrun_state): Delete parameter
stepping_through_sigtramp.
* thread.c (load_infrun_state, save_infrun_state): Update.
'num_pieces' and 'pieces', for returning the result of an
expression that uses DW_OP_piece.
(struct dwarf_expr_piece): New struct type.
* dwarf2expr.c (new_dwarf_expr_context): Initialize num_pieces and
pieces.
(free_dwarf_expr_context): Free pieces, if any.
(add_piece): New function.
(execute_stack_op): Implement DW_OP_piece.
* dwarf2loc.c (dwarf2_evaluate_loc_desc): If the result of the
expression is a list of pieces, print an error message.
(dwarf2_loc_desc_needs_frame): If the expression yields
pieces, and any piece is in a register, then we need a frame.
Reorder includes.
(fetch_register, store_register): Remove prototypes.
(child_resume): Reorganize code and comments such that it is
grouped a bit more logically.
(attach): Explicitly compare errno against 0.
(detach): Likewise. Use perror_with_name instead of
print_sys_errmsg.
* Makefile.in (infptrace.o): Update dependencies.
from CORE_ADDR to struct frame_info *. Use
safe_frame_unwind_memory instead of deprecated_read_memory_nobpt.
(amd64_linux_sigtramp_p): Adjust for changed signature of
and64_linux_sigtramp_start
