Hi,
This patch adds support Pointer Bounds Checker into c-family and LTO
front-ends. The main purpose of changes in front-end is to register all
statically initialized objects for checker. We also need to register such
objects created by compiler.
Thanks,
Ilya
--
gcc/
2013-10-29 Ilya Enkovich <ilya.enkov...@intel.com>
* c/c-lang.c (LANG_HOOKS_CHKP_SUPPORTED): New.
* cp/cp-lang.c (LANG_HOOKS_CHKP_SUPPORTED): New.
* objc/objc-lang.c (LANG_HOOKS_CHKP_SUPPORTED): New.
* objcp/objcp-lang.c (LANG_HOOKS_CHKP_SUPPORTED): New.
* lto/lto-lang.c (LANG_HOOKS_CHKP_SUPPORTED): New.
* c/c-parser.c (c_parser_declaration_or_fndef): Register statically
initialized decls in Pointer Bounds Checker.
* cp/decl.c (cp_finish_decl): Likewise.
* gimplify.c (gimplify_init_constructor): Likewise.
diff --git a/gcc/c/c-lang.c b/gcc/c/c-lang.c
index 614c46d..a32bc6b 100644
--- a/gcc/c/c-lang.c
+++ b/gcc/c/c-lang.c
@@ -43,6 +43,8 @@ enum c_language_kind c_language = clk_c;
#define LANG_HOOKS_INIT c_objc_common_init
#undef LANG_HOOKS_INIT_TS
#define LANG_HOOKS_INIT_TS c_common_init_ts
+#undef LANG_HOOKS_CHKP_SUPPORTED
+#define LANG_HOOKS_CHKP_SUPPORTED true
/* Each front end provides its own lang hook initializer. */
struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
diff --git a/gcc/c/c-parser.c b/gcc/c/c-parser.c
index 9ccae3b..65d83c8 100644
--- a/gcc/c/c-parser.c
+++ b/gcc/c/c-parser.c
@@ -1682,6 +1682,12 @@ c_parser_declaration_or_fndef (c_parser *parser, bool
fndef_ok,
maybe_warn_string_init (TREE_TYPE (d), init);
finish_decl (d, init_loc, init.value,
init.original_type, asm_name);
+
+ /* Register all decls with initializers in Pointer
+ Bounds Checker to generate required static bounds
+ initializers. */
+ if (DECL_INITIAL (d) != error_mark_node)
+ chkp_register_var_initializer (d);
}
}
else
diff --git a/gcc/cp/cp-lang.c b/gcc/cp/cp-lang.c
index a7fa8e4..6d138bd 100644
--- a/gcc/cp/cp-lang.c
+++ b/gcc/cp/cp-lang.c
@@ -81,6 +81,8 @@ static tree get_template_argument_pack_elems_folded
(const_tree);
#define LANG_HOOKS_EH_PERSONALITY cp_eh_personality
#undef LANG_HOOKS_EH_RUNTIME_TYPE
#define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
+#undef LANG_HOOKS_CHKP_SUPPORTED
+#define LANG_HOOKS_CHKP_SUPPORTED true
/* Each front end provides its own lang hook initializer. */
struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 1e92f2a..db40e75 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -6379,6 +6379,12 @@ cp_finish_decl (tree decl, tree init, bool
init_const_expr_p,
the class specifier. */
if (!DECL_EXTERNAL (decl))
var_definition_p = true;
+
+ /* If var has initilizer then we need to register it in
+ Pointer Bounds Checker to generate static bounds initilizer
+ if required. */
+ if (DECL_INITIAL (decl) && DECL_INITIAL (decl) != error_mark_node)
+ chkp_register_var_initializer (decl);
}
/* If the variable has an array type, lay out the type, even if
there is no initializer. It is valid to index through the
diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index 4f52c27..503450f 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -4111,6 +4111,11 @@ gimplify_init_constructor (tree *expr_p, gimple_seq
*pre_p, gimple_seq *post_p,
walk_tree (&ctor, force_labels_r, NULL, NULL);
ctor = tree_output_constant_def (ctor);
+
+ /* We need to register created constant object to
+ initialize bounds for pointers in it. */
+ chkp_register_var_initializer (ctor);
+
if (!useless_type_conversion_p (type, TREE_TYPE (ctor)))
ctor = build1 (VIEW_CONVERT_EXPR, type, ctor);
TREE_OPERAND (*expr_p, 1) = ctor;
diff --git a/gcc/lto/lto-lang.c b/gcc/lto/lto-lang.c
index 0fa0fc9..b6073d9 100644
--- a/gcc/lto/lto-lang.c
+++ b/gcc/lto/lto-lang.c
@@ -1278,6 +1278,8 @@ static void lto_init_ts (void)
#undef LANG_HOOKS_INIT_TS
#define LANG_HOOKS_INIT_TS lto_init_ts
+#undef LANG_HOOKS_CHKP_SUPPORTED
+#define LANG_HOOKS_CHKP_SUPPORTED true
struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
diff --git a/gcc/objc/objc-lang.c b/gcc/objc/objc-lang.c
index bc0008b..5e7e43b 100644
--- a/gcc/objc/objc-lang.c
+++ b/gcc/objc/objc-lang.c
@@ -49,6 +49,8 @@ enum c_language_kind c_language = clk_objc;
#define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
#undef LANG_HOOKS_INIT_TS
#define LANG_HOOKS_INIT_TS objc_common_init_ts
+#undef LANG_HOOKS_CHKP_SUPPORTED
+#define LANG_HOOKS_CHKP_SUPPORTED true
/* Each front end provides its own lang hook initializer. */
struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
diff --git a/gcc/objcp/objcp-lang.c b/gcc/objcp/objcp-lang.c
index f9b126f..0bb80eb 100644
--- a/gcc/objcp/objcp-lang.c
+++ b/gcc/objcp/objcp-lang.c
@@ -46,6 +46,8 @@ static void objcxx_init_ts (void);
#define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
#undef LANG_HOOKS_INIT_TS
#define LANG_HOOKS_INIT_TS objcxx_init_ts
+#undef LANG_HOOKS_CHKP_SUPPORTED
+#define LANG_HOOKS_CHKP_SUPPORTED true
/* Each front end provides its own lang hook initializer. */
struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
