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* dwarf2-frame.c (struct dwarf2_frame_ops): Add signal_frame_p.

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(dwarf2_frame_set_signal_frame_p, dwarf2_frame_signal_frame_p)
	(dwarf2_signal_frame_unwind): New.
	(dwarf2_frame_sniffer): Use dwarf2_frame_signal_frame_p.
	* dwarf2-frame.h (dwarf2_frame_set_signal_frame_p): New prototype.
This commit is contained in:
Daniel Jacobowitz 2004-11-07 21:16:11 +00:00
parent 4fb31ed045
commit 3ed09a3267
3 changed files with 65 additions and 3 deletions
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8
gdb/ChangeLog
View file

@ -1,3 +1,11 @@
2004-11-07 Daniel Jacobowitz <dan@debian.org>
* dwarf2-frame.c (struct dwarf2_frame_ops): Add signal_frame_p.
(dwarf2_frame_set_signal_frame_p, dwarf2_frame_signal_frame_p)
(dwarf2_signal_frame_unwind): New.
(dwarf2_frame_sniffer): Use dwarf2_frame_signal_frame_p.
* dwarf2-frame.h (dwarf2_frame_set_signal_frame_p): New prototype.
2004-11-07 Mark Kettenis <kettenis@gnu.org>
* Makefile.in (mips64obsd-tdep.o): Fix typo.

52
gdb/dwarf2-frame.c
View file

@ -471,6 +471,10 @@ struct dwarf2_frame_ops
{
/* Pre-initialize the register state REG for register REGNUM. */
void (*init_reg) (struct gdbarch *, int, struct dwarf2_frame_state_reg *);
/* Check whether the frame preceding NEXT_FRAME will be a signal
trampoline. */
int (*signal_frame_p) (struct gdbarch *, struct frame_info *);
};
/* Default architecture-specific register state initialization
@ -547,6 +551,33 @@ dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
ops->init_reg (gdbarch, regnum, reg);
}
/* Set the architecture-specific signal trampoline recognition
function for GDBARCH to SIGNAL_FRAME_P. */
void
dwarf2_frame_set_signal_frame_p (struct gdbarch *gdbarch,
int (*signal_frame_p) (struct gdbarch *,
struct frame_info *))
{
struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data);
ops->signal_frame_p = signal_frame_p;
}
/* Query the architecture-specific signal frame recognizer for
NEXT_FRAME. */
static int
dwarf2_frame_signal_frame_p (struct gdbarch *gdbarch,
struct frame_info *next_frame)
{
struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data);
if (ops->signal_frame_p == NULL)
return 0;
return ops->signal_frame_p (gdbarch, next_frame);
}
struct dwarf2_frame_cache
@ -845,6 +876,13 @@ static const struct frame_unwind dwarf2_frame_unwind =
dwarf2_frame_prev_register
};
static const struct frame_unwind dwarf2_signal_frame_unwind =
{
SIGTRAMP_FRAME,
dwarf2_frame_this_id,
dwarf2_frame_prev_register
};
const struct frame_unwind *
dwarf2_frame_sniffer (struct frame_info *next_frame)
{
@ -852,10 +890,18 @@ dwarf2_frame_sniffer (struct frame_info *next_frame)
function. frame_pc_unwind(), for a no-return next function, can
end up returning something past the end of this function's body. */
CORE_ADDR block_addr = frame_unwind_address_in_block (next_frame);
if (dwarf2_frame_find_fde (&block_addr))
return &dwarf2_frame_unwind;
if (!dwarf2_frame_find_fde (&block_addr))
return NULL;
/* On some targets, signal trampolines may have unwind information.
We need to recognize them so that we set the frame type
correctly. */
if (dwarf2_frame_signal_frame_p (get_frame_arch (next_frame),
next_frame))
return &dwarf2_signal_frame_unwind;
return &dwarf2_frame_unwind;
}

8
gdb/dwarf2-frame.h
View file

@ -79,6 +79,14 @@ extern void dwarf2_frame_set_init_reg (struct gdbarch *gdbarch,
void (*init_reg) (struct gdbarch *, int,
struct dwarf2_frame_state_reg *));
/* Set the architecture-specific signal trampoline recognition
function for GDBARCH to SIGNAL_FRAME_P. */
extern void
dwarf2_frame_set_signal_frame_p (struct gdbarch *gdbarch,
int (*signal_frame_p) (struct gdbarch *,
struct frame_info *));
/* Return the frame unwind methods for the function that contains PC,
or NULL if it can't be handled by DWARF CFI frame unwinder. */