#include "config.h"
#include "system.h"
#include "coretypes.h"
-#include "hash-set.h"
-#include "machmode.h"
-#include "vec.h"
-#include "double-int.h"
-#include "input.h"
#include "alias.h"
#include "symtab.h"
#include "options.h"
-#include "wide-int.h"
-#include "inchash.h"
#include "tree.h"
#include "fold-const.h"
-#include "hash-table.h"
#include "predict.h"
#include "tm.h"
#include "hard-reg-set.h"
-#include "input.h"
#include "function.h"
#include "dominance.h"
#include "cfg.h"
#include "tree-ssa-alias.h"
#include "internal-fn.h"
#include "gimple-expr.h"
-#include "is-a.h"
-#include "inchash.h"
#include "gimple.h"
#include "gimplify.h"
#include "gimple-iterator.h"
#include "varasm.h"
#include "stor-layout.h"
#include "tree-iterator.h"
-#include "hash-map.h"
-#include "plugin-api.h"
-#include "ipa-ref.h"
#include "cgraph.h"
#include "stringpool.h"
#include "tree-ssanames.h"
#include "asan.h"
#include "gimple-pretty-print.h"
#include "target.h"
+#include "rtl.h"
+#include "flags.h"
+#include "insn-config.h"
+#include "expmed.h"
+#include "dojump.h"
+#include "explow.h"
+#include "emit-rtl.h"
+#include "stmt.h"
#include "expr.h"
#include "insn-codes.h"
#include "optabs.h"
#include "ubsan.h"
#include "params.h"
#include "builtins.h"
+#include "fnmatch.h"
/* AddressSanitizer finds out-of-bounds and use-after-free bugs
with <2x slowdown on average.
where '(...){n}' means the content inside the parenthesis occurs 'n'
times, with 'n' being the number of variables on the stack.
-
+
3/ The following 8 bytes contain the PC of the current function which
will be used by the run-time library to print an error message.
static unsigned HOST_WIDE_INT asan_shadow_offset_value;
static bool asan_shadow_offset_computed;
+static vec<char *> sanitized_sections;
/* Sets shadow offset to value in string VAL. */
set_asan_shadow_offset (const char *val)
{
char *endp;
-
+
errno = 0;
#ifdef HAVE_LONG_LONG
asan_shadow_offset_value = strtoull (val, &endp, 0);
return true;
}
+/* Set list of user-defined sections that need to be sanitized. */
+
+void
+set_sanitized_sections (const char *sections)
+{
+ char *pat;
+ unsigned i;
+ FOR_EACH_VEC_ELT (sanitized_sections, i, pat)
+ free (pat);
+ sanitized_sections.truncate (0);
+
+ for (const char *s = sections; *s; )
+ {
+ const char *end;
+ for (end = s; *end && *end != ','; ++end);
+ size_t len = end - s;
+ sanitized_sections.safe_push (xstrndup (s, len));
+ s = *end ? end + 1 : end;
+ }
+}
+
+/* Checks whether section SEC should be sanitized. */
+
+static bool
+section_sanitized_p (const char *sec)
+{
+ char *pat;
+ unsigned i;
+ FOR_EACH_VEC_ELT (sanitized_sections, i, pat)
+ if (fnmatch (pat, sec, FNM_PERIOD) == 0)
+ return true;
+ return false;
+}
+
/* Returns Asan shadow offset. */
static unsigned HOST_WIDE_INT
/* The size of the access. */
HOST_WIDE_INT access_size;
-};
-static alloc_pool asan_mem_ref_alloc_pool;
+ /* Pool allocation new operator. */
+ inline void *operator new (size_t)
+ {
+ return pool.allocate ();
+ }
-/* This creates the alloc pool used to store the instances of
- asan_mem_ref that are stored in the hash table asan_mem_ref_ht. */
+ /* Delete operator utilizing pool allocation. */
+ inline void operator delete (void *ptr)
+ {
+ pool.remove ((asan_mem_ref *) ptr);
+ }
-static alloc_pool
-asan_mem_ref_get_alloc_pool ()
-{
- if (asan_mem_ref_alloc_pool == NULL)
- asan_mem_ref_alloc_pool = create_alloc_pool ("asan_mem_ref",
- sizeof (asan_mem_ref),
- 10);
- return asan_mem_ref_alloc_pool;
-
-}
+ /* Memory allocation pool. */
+ static pool_allocator<asan_mem_ref> pool;
+};
+
+pool_allocator<asan_mem_ref> asan_mem_ref::pool ("asan_mem_ref", 10);
/* Initializes an instance of asan_mem_ref. */
static asan_mem_ref*
asan_mem_ref_new (tree start, HOST_WIDE_INT access_size)
{
- asan_mem_ref *ref =
- (asan_mem_ref *) pool_alloc (asan_mem_ref_get_alloc_pool ());
+ asan_mem_ref *ref = new asan_mem_ref;
asan_mem_ref_init (ref, start, access_size);
return ref;
return asan_mem_ref_get_end (ref->start, len);
}
-struct asan_mem_ref_hasher
- : typed_noop_remove <asan_mem_ref>
+struct asan_mem_ref_hasher : nofree_ptr_hash <asan_mem_ref>
{
- typedef asan_mem_ref value_type;
- typedef asan_mem_ref compare_type;
-
- static inline hashval_t hash (const value_type *);
- static inline bool equal (const value_type *, const compare_type *);
+ static inline hashval_t hash (const asan_mem_ref *);
+ static inline bool equal (const asan_mem_ref *, const asan_mem_ref *);
};
/* Hash a memory reference. */
delete asan_mem_ref_ht;
asan_mem_ref_ht = NULL;
- if (asan_mem_ref_alloc_pool)
- {
- free_alloc_pool (asan_mem_ref_alloc_pool);
- asan_mem_ref_alloc_pool = NULL;
- }
+ asan_mem_ref::pool.release ();
}
/* Return true iff the memory reference REF has been instrumented. */
to be an array of such vars, putting padding in there
breaks this assumption. */
|| (DECL_SECTION_NAME (decl) != NULL
- && !symtab_node::get (decl)->implicit_section)
+ && !symtab_node::get (decl)->implicit_section
+ && !section_sanitized_p (DECL_SECTION_NAME (decl)))
|| DECL_SIZE (decl) == 0
|| ASAN_RED_ZONE_SIZE * BITS_PER_UNIT > MAX_OFILE_ALIGNMENT
|| !valid_constant_size_p (DECL_SIZE_UNIT (decl))
{
if (DECL_THREAD_LOCAL_P (inner))
return;
+ if (!ASAN_GLOBALS && is_global_var (inner))
+ return;
if (!TREE_STATIC (inner))
{
/* Automatic vars in the current function will be always
is_store);
is_instrumented = true;
}
-
+
if (gimple_assign_load_p (s))
{
ref_expr = gimple_assign_rhs1 (s);
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