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Tail call sites reader implementation.
	* dwarf2read.c (read_call_site_scope): Recognize DW_AT_GNU_tail_call,
	fill in TYPE_TAIL_CALL_LIST.
	* gdbtypes.h (struct func_type): New field tail_call_list.
	(struct call_site): New field tail_call_next.
	(TYPE_TAIL_CALL_LIST): New definition.
This commit is contained in:
Jan Kratochvil
2011-10-09 19:23:41 +00:00
parent 8e3b41a906
commit bb984ff154
3 changed files with 67 additions and 0 deletions
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11
gdb/gdbtypes.h
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@@ -902,6 +902,13 @@ struct func_type
this is only fetched from the Dwarf-2 DW_AT_calling_convention
attribute. */
unsigned calling_convention;
/* Only those DW_TAG_GNU_call_site's in this function that have
DW_AT_GNU_tail_call set are linked in this list. Function without its
tail call list complete (DW_AT_GNU_all_tail_call_sites or its superset
DW_AT_GNU_all_call_sites) has TAIL_CALL_LIST NULL, even if some
DW_TAG_GNU_call_site's exist in such function. */
struct call_site *tail_call_list;
};
/* A place where a function gets called from, represented by
@@ -913,6 +920,9 @@ struct call_site
field as we overload core_addr_hash and core_addr_eq for it. */
CORE_ADDR pc;
/* List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
struct call_site *tail_call_next;
/* Describe DW_AT_GNU_call_site_target. Missing attribute uses
FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
struct
@@ -1060,6 +1070,7 @@ extern void allocate_gnat_aux_type (struct type *);
#define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
#define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
#define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
#define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
#define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
#define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
#define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)