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Sun Dec 26 16:59:39 1993 Jim Kingdon (kingdon@lioth.cygnus.com)

Browse source 
* 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.
This commit is contained in:
Jim Kingdon 1993-12-26 23:06:56 +00:00
parent 5461330147
commit b2f03c3027
2 changed files with 58 additions and 23 deletions
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11
gdb/ChangeLog
View file

@ -1,3 +1,14 @@
Sun Dec 26 16:59:39 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* 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.
Sun Dec 26 09:18:10 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* gdbtypes.c (force_to_range_type): Use switch statement.

70
gdb/infrun.c
View file

@ -75,6 +75,13 @@ hook_stop_stub PARAMS ((char *));
#define SKIP_TRAMPOLINE_CODE(pc) 0
#endif
/* On Irix 5, some function calls automatically skip the first few
instructions, so we need a more complicated test to see if we are
the start of a function. */
#ifndef AT_FUNCTION_START
#define AT_FUNCTION_START(pc,func_name,func_addr) 0
#endif
/* For SVR4 shared libraries, each call goes through a small piece of
trampoline code in the ".init" section. IN_SOLIB_TRAMPOLINE evaluates
to nonzero if we are current stopped in one of these. */
@ -397,6 +404,7 @@ wait_for_inferior ()
struct symtab_and_line sal;
int remove_breakpoints_on_following_step = 0;
int current_line;
struct symtab *current_symtab;
int handling_longjmp = 0; /* FIXME */
struct breakpoint *step_resume_breakpoint = NULL;
int pid;
@ -405,6 +413,7 @@ wait_for_inferior ()
&step_resume_breakpoint);
sal = find_pc_line(prev_pc, 0);
current_line = sal.line;
current_symtab = sal.symtab;
/* Are we stepping? */
#define CURRENTLY_STEPPING() ((step_resume_breakpoint == NULL \
@ -493,24 +502,39 @@ wait_for_inferior ()
if (stop_signal == SIGTRAP
&& breakpoint_here_p (stop_pc - DECR_PC_AFTER_BREAK))
if (!breakpoint_thread_match (stop_pc - DECR_PC_AFTER_BREAK, pid))
{
/* Saw a breakpoint, but it was hit by the wrong thread. Just continue. */
if (breakpoints_inserted)
{
remove_breakpoints ();
target_resume (pid, 1, 0); /* Single step */
/* FIXME: What if a signal arrives instead of the single-step
happening? */
target_wait (pid, NULL);
insert_breakpoints ();
}
target_resume (-1, 0, 0);
continue;
}
else
if (pid != inferior_pid)
goto switch_thread;
{
if (!breakpoint_thread_match (stop_pc - DECR_PC_AFTER_BREAK, pid))
{
/* Saw a breakpoint, but it was hit by the wrong thread. Just continue. */
if (breakpoints_inserted)
{
if (pid != inferior_pid)
{
int save_pid = inferior_pid;
inferior_pid = pid;
registers_changed ();
write_pc (stop_pc - DECR_PC_AFTER_BREAK);
inferior_pid = save_pid;
registers_changed ();
}
else
write_pc (stop_pc - DECR_PC_AFTER_BREAK);
remove_breakpoints ();
target_resume (pid, 1, 0); /* Single step */
/* FIXME: What if a signal arrives instead of the single-step
happening? */
target_wait (pid, &w);
insert_breakpoints ();
}
target_resume (-1, 0, 0);
continue;
}
else
if (pid != inferior_pid)
goto switch_thread;
}
if (pid != inferior_pid)
{
@ -577,7 +601,7 @@ switch_thread:
if (signal_program[stop_signal] == 0)
stop_signal = 0;
target_resume (-1, 0, stop_signal);
target_resume (pid, 0, stop_signal);
continue;
}
}
@ -983,6 +1007,7 @@ switch_thread:
/* If we do a call, we will be at the start of a function. */
|| stop_pc == stop_func_start
|| AT_FUNCTION_START (stop_pc, stop_func_name, stop_func_start)
#if 0
/* Not conservative enough for 4.11. FIXME: enable this
@ -1110,9 +1135,7 @@ step_into_function:
goto keep_going;
}
/* We've wandered out of the step range (but haven't done a
subroutine call or return). (Is that true? I think we get
here if we did a return and maybe a longjmp). */
/* We've wandered out of the step range. */
sal = find_pc_line(stop_pc, 0);
@ -1134,7 +1157,8 @@ step_into_function:
break;
}
if (stop_pc == sal.pc && current_line != sal.line)
if (stop_pc == sal.pc
&& (current_line != sal.line || current_symtab != sal.symtab))
{
/* We are at the start of a different line. So stop. Note that
we don't stop if we step into the middle of a different line.