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Build unavailable-stack frames for tracepoint. 

gdb/ChangeLog:

2016-02-24  Wei-cheng Wang  <cole945@gmail.com>

	* rs6000-tdep.c (rs6000_frame_cache, rs6000_frame_this_id): Handle
	unavailable PC/SP to build unavailable frame.
This commit is contained in:
Wei-cheng Wang 2015-03-31 00:30:31 +08:00 committed by Marcin Kościelnicki
parent d79587bd21
commit 50ae56ec46
2 changed files with 43 additions and 11 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2016-02-24 Wei-cheng Wang <cole945@gmail.com>
* rs6000-tdep.c (rs6000_frame_cache, rs6000_frame_this_id): Handle
unavailable PC/SP to build unavailable frame.
2016-02-23 Doug Evans <dje@google.com> 2016-02-23 Doug Evans <dje@google.com>
Extend "skip" command to support -file, -gfile, -function, -rfunction. Extend "skip" command to support -file, -gfile, -function, -rfunction.

49
gdb/rs6000-tdep.c
View File

@ -3191,6 +3191,13 @@ struct rs6000_frame_cache
CORE_ADDR base; CORE_ADDR base;
CORE_ADDR initial_sp; CORE_ADDR initial_sp;
struct trad_frame_saved_reg *saved_regs; struct trad_frame_saved_reg *saved_regs;
/* Set BASE_P to true if this frame cache is properly initialized.
Otherwise set to false because some registers or memory cannot
collected. */
int base_p;
/* Cache PC for building unavailable frame. */
CORE_ADDR pc;
}; };
static struct rs6000_frame_cache * static struct rs6000_frame_cache *
@ -3208,21 +3215,33 @@ rs6000_frame_cache (struct frame_info *this_frame, void **this_cache)
return (struct rs6000_frame_cache *) (*this_cache); return (struct rs6000_frame_cache *) (*this_cache);
cache = FRAME_OBSTACK_ZALLOC (struct rs6000_frame_cache); cache = FRAME_OBSTACK_ZALLOC (struct rs6000_frame_cache);
(*this_cache) = cache; (*this_cache) = cache;
cache->pc = 0;
cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
func = get_frame_func (this_frame); TRY
pc = get_frame_pc (this_frame); {
skip_prologue (gdbarch, func, pc, &fdata); func = get_frame_func (this_frame);
cache->pc = func;
pc = get_frame_pc (this_frame);
skip_prologue (gdbarch, func, pc, &fdata);
/* Figure out the parent's stack pointer. */ /* Figure out the parent's stack pointer. */
/* NOTE: cagney/2002-04-14: The ->frame points to the inner-most /* NOTE: cagney/2002-04-14: The ->frame points to the inner-most
address of the current frame. Things might be easier if the address of the current frame. Things might be easier if the
->frame pointed to the outer-most address of the frame. In ->frame pointed to the outer-most address of the frame. In
the mean time, the address of the prev frame is used as the the mean time, the address of the prev frame is used as the
base address of this frame. */ base address of this frame. */
cache->base = get_frame_register_unsigned cache->base = get_frame_register_unsigned
(this_frame, gdbarch_sp_regnum (gdbarch)); (this_frame, gdbarch_sp_regnum (gdbarch));
}
CATCH (ex, RETURN_MASK_ERROR)
{
if (ex.error != NOT_AVAILABLE_ERROR)
throw_exception (ex);
return (*this_cache);
}
END_CATCH
/* If the function appears to be frameless, check a couple of likely /* If the function appears to be frameless, check a couple of likely
indicators that we have simply failed to find the frame setup. indicators that we have simply failed to find the frame setup.
@ -3371,6 +3390,7 @@ rs6000_frame_cache (struct frame_info *this_frame, void **this_cache)
cache->initial_sp cache->initial_sp
= get_frame_register_unsigned (this_frame, fdata.alloca_reg); = get_frame_register_unsigned (this_frame, fdata.alloca_reg);
cache->base_p = 1;
return cache; return cache;
} }
@ -3380,6 +3400,13 @@ rs6000_frame_this_id (struct frame_info *this_frame, void **this_cache,
{ {
struct rs6000_frame_cache *info = rs6000_frame_cache (this_frame, struct rs6000_frame_cache *info = rs6000_frame_cache (this_frame,
this_cache); this_cache);
if (!info->base_p)
{
(*this_id) = frame_id_build_unavailable_stack (info->pc);
return;
}
/* This marks the outermost frame. */ /* This marks the outermost frame. */
if (info->base == 0) if (info->base == 0)
return; return;