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2004-08-31 Andrew Cagney <cagney@gnu.org>

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* frame.c: Include "objfiles.h".
	(inside_main_func): New function.
	(get_prev_frame): Use new inside_main_func.
	* Makefile.in (frame.o): Update dependencies.
	* defs.h (inside_main_func): Delete declaration.
	* blockframe.c (inside_main_func): Delete function.
This commit is contained in:
Andrew Cagney
2004-09-01 14:13:33 +00:00
parent 0df3d27f98
commit c8cd9f6c4c
5 changed files with 37 additions and 96 deletions
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36
gdb/frame.c
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@@ -40,6 +40,7 @@
#include "command.h"
#include "gdbcmd.h"
#include "observer.h"
#include "objfiles.h"
static struct frame_info *get_prev_frame_1 (struct frame_info *this_frame);
@@ -1108,6 +1109,27 @@ frame_debug_got_null_frame (struct ui_file *file,
}
}
/* Is this (non-sentinel) frame in the "main"() function? */
static int
inside_main_func (struct frame_info *this_frame)
{
struct minimal_symbol *msymbol;
CORE_ADDR maddr;
if (symfile_objfile == 0)
return 0;
msymbol = lookup_minimal_symbol (main_name (), NULL, symfile_objfile);
if (msymbol == NULL)
return 0;
/* Make certain that the code, and not descriptor, address is
returned. */
maddr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
SYMBOL_VALUE_ADDRESS (msymbol),
&current_target);
return maddr == get_frame_func (this_frame);
}
/* Return a structure containing various interesting information about
the frame that called THIS_FRAME. Returns NULL if there is entier
no such frame or the frame fails any of a set of target-independent
@@ -1163,17 +1185,13 @@ get_prev_frame (struct frame_info *this_frame)
get_current_frame(). */
gdb_assert (this_frame != NULL);
/* Make sure we pass an address within THIS_FRAME's code block to
inside_main_func(). Otherwise, we might stop unwinding at a
function which has a call instruction as its last instruction if
that function immediately precedes main(). */
if (this_frame->level >= 0
&& !backtrace_past_main
&& inside_main_func (get_frame_address_in_block (this_frame)))
/* Don't unwind past main(), but always unwind the sentinel frame.
Note, this is done _before_ the frame has been marked as
previously unwound. That way if the user later decides to
allow unwinds past main(), that just happens. */
&& inside_main_func (this_frame))
/* Don't unwind past main(). Note, this is done _before_ the
frame has been marked as previously unwound. That way if the
user later decides to enable unwinds past main(), that will
automatically happen. */
{
frame_debug_got_null_frame (gdb_stdlog, this_frame, "inside main func");
return NULL;