/* Mudflap: narrow-pointer bounds-checking by tree rewriting.
- Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012
Free Software Foundation, Inc.
Contributed by Frank Ch. Eigler <fche@redhat.com>
and Graydon Hoare <graydon@redhat.com>
#include "tree-pass.h"
#include "hashtab.h"
#include "diagnostic.h"
-#include <demangle.h>
+#include "demangle.h"
#include "langhooks.h"
#include "ggc.h"
#include "cgraph.h"
-#include "toplev.h"
#include "gimple.h"
/* Internal function decls */
static gimple_seq mx_register_decls (tree, gimple_seq, location_t);
static unsigned int execute_mudflap_function_decls (void);
+/* Return true if DECL is artificial stub that shouldn't be instrumented by
+ mf. We should instrument clones of non-artificial functions. */
+static inline bool
+mf_artificial (const_tree decl)
+{
+ return DECL_ARTIFICIAL (DECL_ORIGIN (decl));
+}
/* ------------------------------------------------------------------------ */
/* Some generally helpful functions for mudflap instrumentation. */
tree result = mf_mark (build_string (len + 1, string));
TREE_TYPE (result) = build_array_type
- (char_type_node, build_index_type (build_int_cst (NULL_TREE, len)));
+ (char_type_node, build_index_type (size_int (len)));
TREE_CONSTANT (result) = 1;
TREE_READONLY (result) = 1;
TREE_STATIC (result) = 1;
tree struct_type = make_node (RECORD_TYPE);
DECL_CONTEXT (fieldlo) = struct_type;
DECL_CONTEXT (fieldhi) = struct_type;
- TREE_CHAIN (fieldlo) = fieldhi;
+ DECL_CHAIN (fieldlo) = fieldhi;
TYPE_FIELDS (struct_type) = fieldlo;
TYPE_NAME (struct_type) = get_identifier ("__mf_cache");
layout_type (struct_type);
/* Don't instrument functions such as the synthetic constructor
built during mudflap_finish_file. */
- if (mf_marked_p (current_function_decl) ||
- DECL_ARTIFICIAL (current_function_decl))
+ if (mf_marked_p (current_function_decl)
+ || mf_artificial (current_function_decl))
return 0;
push_gimplify_context (&gctx);
+ add_referenced_var (mf_cache_array_decl);
+ add_referenced_var (mf_cache_shift_decl);
+ add_referenced_var (mf_cache_mask_decl);
+
/* In multithreaded mode, don't cache the lookup cache parameters. */
if (! flag_mudflap_threads)
mf_decl_cache_locals ();
u = build3 (COMPONENT_REF, mf_uintptr_type,
build1 (INDIRECT_REF, mf_cache_struct_type, mf_elem),
- TREE_CHAIN (TYPE_FIELDS (mf_cache_struct_type)), NULL_TREE);
+ DECL_CHAIN (TYPE_FIELDS (mf_cache_struct_type)), NULL_TREE);
v = mf_limit;
}
else if (TREE_CODE (var) == COMPONENT_REF)
var = TREE_OPERAND (var, 0);
- else if (INDIRECT_REF_P (var))
+ else if (INDIRECT_REF_P (var)
+ || TREE_CODE (var) == MEM_REF)
{
base = TREE_OPERAND (var, 0);
break;
elt = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (elt)),
elt);
addr = fold_convert_loc (location, ptr_type_node, elt ? elt : base);
- addr = fold_build2_loc (location, POINTER_PLUS_EXPR, ptr_type_node,
- addr, fold_convert_loc (location, sizetype,
- byte_position (field)));
+ addr = fold_build_pointer_plus_loc (location,
+ addr, byte_position (field));
}
else
addr = build1 (ADDR_EXPR, build_pointer_type (type), t);
limit = fold_build2_loc (location, MINUS_EXPR, mf_uintptr_type,
fold_build2_loc (location, PLUS_EXPR, mf_uintptr_type,
- convert (mf_uintptr_type, addr),
+ fold_convert (mf_uintptr_type, addr),
size),
integer_one_node);
}
case INDIRECT_REF:
addr = TREE_OPERAND (t, 0);
base = addr;
- limit = fold_build2_loc (location, POINTER_PLUS_EXPR, ptr_type_node,
- fold_build2_loc (location,
- POINTER_PLUS_EXPR, ptr_type_node, base,
- size),
- size_int (-1));
+ limit = fold_build_pointer_plus_hwi_loc
+ (location, fold_build_pointer_plus_loc (location, base, size), -1);
+ break;
+
+ case MEM_REF:
+ addr = fold_build_pointer_plus_loc (location, TREE_OPERAND (t, 0),
+ TREE_OPERAND (t, 1));
+ base = addr;
+ limit = fold_build_pointer_plus_hwi_loc (location,
+ fold_build_pointer_plus_loc (location,
+ base, size), -1);
break;
case TARGET_MEM_REF:
addr = tree_mem_ref_addr (ptr_type_node, t);
base = addr;
- limit = fold_build2_loc (location, POINTER_PLUS_EXPR, ptr_type_node,
- fold_build2_loc (location,
- POINTER_PLUS_EXPR, ptr_type_node, base,
- size),
- size_int (-1));
+ limit = fold_build_pointer_plus_hwi_loc (location,
+ fold_build_pointer_plus_loc (location,
+ base, size), -1);
break;
case ARRAY_RANGE_REF:
return;
bpu = bitsize_int (BITS_PER_UNIT);
- ofs = convert (bitsizetype, TREE_OPERAND (t, 2));
+ ofs = fold_convert (bitsizetype, TREE_OPERAND (t, 2));
rem = size_binop_loc (location, TRUNC_MOD_EXPR, ofs, bpu);
- ofs = fold_convert_loc (location,
- sizetype,
- size_binop_loc (location,
- TRUNC_DIV_EXPR, ofs, bpu));
+ ofs = size_binop_loc (location, TRUNC_DIV_EXPR, ofs, bpu);
- size = convert (bitsizetype, TREE_OPERAND (t, 1));
+ size = fold_convert (bitsizetype, TREE_OPERAND (t, 1));
size = size_binop_loc (location, PLUS_EXPR, size, rem);
size = size_binop_loc (location, CEIL_DIV_EXPR, size, bpu);
- size = convert (sizetype, size);
+ size = fold_convert (sizetype, size);
addr = TREE_OPERAND (TREE_OPERAND (t, 0), 0);
- addr = convert (ptr_type_node, addr);
- addr = fold_build2_loc (location, POINTER_PLUS_EXPR,
- ptr_type_node, addr, ofs);
+ addr = fold_convert (ptr_type_node, addr);
+ addr = fold_build_pointer_plus_loc (location, addr, ofs);
base = addr;
- limit = fold_build2_loc (location, POINTER_PLUS_EXPR, ptr_type_node,
- fold_build2_loc (location,
- POINTER_PLUS_EXPR, ptr_type_node,
- base, size),
- size_int (-1));
+ limit = fold_build_pointer_plus_hwi_loc (location,
+ fold_build_pointer_plus_loc (location,
+ base, size), -1);
}
break;
}
/* Transform
1) Memory references.
- 2) BUILTIN_ALLOCA calls.
*/
static void
mf_xform_statements (void)
}
break;
- case GIMPLE_CALL:
- {
- tree fndecl = gimple_call_fndecl (s);
- if (fndecl && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA))
- gimple_call_set_cannot_inline (s, true);
- }
- break;
-
default:
;
}
/* Don't instrument functions such as the synthetic constructor
built during mudflap_finish_file. */
- if (mf_marked_p (current_function_decl) ||
- DECL_ARTIFICIAL (current_function_decl))
+ if (mf_marked_p (current_function_decl)
+ || mf_artificial (current_function_decl))
return 0;
push_gimplify_context (&gctx);
/* Variable-sized objects should have sizes already been
gimplified when we got here. */
- size = convert (size_type_node, TYPE_SIZE_UNIT (TREE_TYPE (decl)));
+ size = fold_convert (size_type_node,
+ TYPE_SIZE_UNIT (TREE_TYPE (decl)));
gcc_assert (is_gimple_val (size));
unregister_fncall = gimple_build_call (mf_unregister_fndecl, 3,
unregister_fncall_param,
size,
- build_int_cst (NULL_TREE, 3));
+ integer_three_node);
variable_name = mf_varname_tree (decl);
register_fncall = gimple_build_call (mf_register_fndecl, 4,
register_fncall_param,
size,
- build_int_cst (NULL_TREE, 3),
+ integer_three_node,
variable_name);
/* Add the __mf_register call at the current appending point. */
if (gsi_end_p (initially_stmts))
{
- if (!DECL_ARTIFICIAL (decl))
+ if (!mf_artificial (decl))
warning (OPT_Wmudflap,
"mudflap cannot track %qE in stub function",
DECL_NAME (decl));
mf_mark (decl);
}
- decl = TREE_CHAIN (decl);
+ decl = DECL_CHAIN (decl);
}
/* Actually, (initially_stmts!=NULL) <=> (finally_stmts!=NULL) */
tree arg, call_stmt;
arg = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (obj)), obj);
- arg = convert (ptr_type_node, arg);
+ arg = fold_convert (ptr_type_node, arg);
call_stmt = build_call_expr (mf_register_fndecl, 4,
arg,
- convert (size_type_node, object_size),
+ fold_convert (size_type_node, object_size),
/* __MF_TYPE_STATIC */
- build_int_cst (NULL_TREE, 4),
+ build_int_cst (integer_type_node, 4),
varname);
append_to_statement_list (call_stmt, &enqueued_call_stmt_chain);
during mudflap_finish_file (). That would confuse the user,
since the text would refer to variables that don't show up in the
user's source code. */
- if (DECL_P (obj) && DECL_EXTERNAL (obj) && DECL_ARTIFICIAL (obj))
+ if (DECL_P (obj) && DECL_EXTERNAL (obj) && mf_artificial (obj))
return;
VEC_safe_push (tree, gc, deferred_static_decls, obj);
return;
if (TREE_CODE (obj) == STRING_CST)
- object_size = build_int_cst (NULL_TREE, TREE_STRING_LENGTH (obj));
+ object_size = size_int (TREE_STRING_LENGTH (obj));
else
object_size = size_in_bytes (TREE_TYPE (obj));
tree ctor_statements = NULL_TREE;
/* No need to continue when there were errors. */
- if (errorcount != 0 || sorrycount != 0)
+ if (seen_error ())
return;
/* Insert a call to __mf_init. */
{
size_t i;
tree obj;
- for (i = 0; VEC_iterate (tree, deferred_static_decls, i, obj); i++)
+ FOR_EACH_VEC_ELT (tree, deferred_static_decls, i, obj)
{
gcc_assert (DECL_P (obj));
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func /* todo_flags_finish */
+ 0 /* todo_flags_finish */
}
};
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_verify_flow | TODO_verify_stmts
- | TODO_dump_func | TODO_update_ssa /* todo_flags_finish */
+ | TODO_update_ssa /* todo_flags_finish */
}
};
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