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.
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@ -1,3 +1,8 @@
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2016-02-24 Wei-cheng Wang <cole945@gmail.com>
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* rs6000-tdep.c (rs6000_frame_cache, rs6000_frame_this_id): Handle
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unavailable PC/SP to build unavailable frame.
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2016-02-23 Doug Evans <dje@google.com>
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Extend "skip" command to support -file, -gfile, -function, -rfunction.
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@ -3191,6 +3191,13 @@ struct rs6000_frame_cache
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CORE_ADDR base;
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CORE_ADDR initial_sp;
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struct trad_frame_saved_reg *saved_regs;
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/* Set BASE_P to true if this frame cache is properly initialized.
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Otherwise set to false because some registers or memory cannot
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collected. */
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int base_p;
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/* Cache PC for building unavailable frame. */
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CORE_ADDR pc;
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};
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static struct rs6000_frame_cache *
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@ -3208,9 +3215,13 @@ rs6000_frame_cache (struct frame_info *this_frame, void **this_cache)
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return (struct rs6000_frame_cache *) (*this_cache);
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cache = FRAME_OBSTACK_ZALLOC (struct rs6000_frame_cache);
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(*this_cache) = cache;
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cache->pc = 0;
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cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
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TRY
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{
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func = get_frame_func (this_frame);
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cache->pc = func;
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pc = get_frame_pc (this_frame);
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skip_prologue (gdbarch, func, pc, &fdata);
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@ -3223,6 +3234,14 @@ rs6000_frame_cache (struct frame_info *this_frame, void **this_cache)
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base address of this frame. */
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cache->base = get_frame_register_unsigned
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(this_frame, gdbarch_sp_regnum (gdbarch));
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}
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CATCH (ex, RETURN_MASK_ERROR)
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{
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if (ex.error != NOT_AVAILABLE_ERROR)
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throw_exception (ex);
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return (*this_cache);
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}
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END_CATCH
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/* If the function appears to be frameless, check a couple of likely
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indicators that we have simply failed to find the frame setup.
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@ -3371,6 +3390,7 @@ rs6000_frame_cache (struct frame_info *this_frame, void **this_cache)
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cache->initial_sp
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= get_frame_register_unsigned (this_frame, fdata.alloca_reg);
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cache->base_p = 1;
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return cache;
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}
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@ -3380,6 +3400,13 @@ rs6000_frame_this_id (struct frame_info *this_frame, void **this_cache,
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{
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struct rs6000_frame_cache *info = rs6000_frame_cache (this_frame,
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this_cache);
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if (!info->base_p)
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{
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(*this_id) = frame_id_build_unavailable_stack (info->pc);
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return;
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}
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/* This marks the outermost frame. */
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if (info->base == 0)
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return;
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