/* AddressSanitizer, a fast memory error detector.
- Copyright (C) 2012 Free Software Foundation, Inc.
+ Copyright (C) 2012, 2013 Free Software Foundation, Inc.
Contributed by Kostya Serebryany <kcc@google.com>
This file is part of GCC.
|| DECL_THREAD_LOCAL_P (decl)
/* Externs will be protected elsewhere. */
|| DECL_EXTERNAL (decl)
- || !TREE_ASM_WRITTEN (decl)
|| !DECL_RTL_SET_P (decl)
/* Comdat vars pose an ABI problem, we can't know if
the var that is selected by the linker will have
tree fn = builtin_decl_implicit (BUILT_IN_ASAN_INIT);
append_to_statement_list (build_call_expr (fn, 0), &asan_ctor_statements);
FOR_EACH_DEFINED_VARIABLE (vnode)
- if (asan_protect_global (vnode->symbol.decl))
+ if (TREE_ASM_WRITTEN (vnode->symbol.decl)
+ && asan_protect_global (vnode->symbol.decl))
++gcount;
htab_t const_desc_htab = constant_pool_htab ();
htab_traverse (const_desc_htab, count_string_csts, &gcount);
DECL_IGNORED_P (var) = 1;
vec_alloc (v, gcount);
FOR_EACH_DEFINED_VARIABLE (vnode)
- if (asan_protect_global (vnode->symbol.decl))
+ if (TREE_ASM_WRITTEN (vnode->symbol.decl)
+ && asan_protect_global (vnode->symbol.decl))
asan_add_global (vnode->symbol.decl, TREE_TYPE (type), v);
struct asan_add_string_csts_data aascd;
aascd.type = TREE_TYPE (type);
/* Output variables, constants and external declarations, for GNU compiler.
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- 2010, 2011, 2012 Free Software Foundation, Inc.
+ 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
This file is part of GCC.
tree decl = SYMBOL_REF_DECL (symbol);
tree exp = DECL_INITIAL (decl);
unsigned int align;
+ bool asan_protected = false;
/* Make sure any other constants whose addresses appear in EXP
are assigned label numbers. */
/* We are no longer deferring this constant. */
TREE_ASM_WRITTEN (decl) = TREE_ASM_WRITTEN (exp) = 1;
+ if (flag_asan && TREE_CODE (exp) == STRING_CST
+ && asan_protect_global (exp))
+ {
+ asan_protected = true;
+ DECL_ALIGN (decl) = MAX (DECL_ALIGN (decl),
+ ASAN_RED_ZONE_SIZE * BITS_PER_UNIT);
+ }
+
/* If the constant is part of an object block, make sure that the
decl has been positioned within its block, but do not write out
its definition yet. output_object_blocks will do that later. */
place_block_symbol (symbol);
else
{
- bool asan_protected = false;
align = DECL_ALIGN (decl);
switch_to_section (get_constant_section (exp, align));
- if (flag_asan && TREE_CODE (exp) == STRING_CST
- && asan_protect_global (exp))
- {
- asan_protected = true;
- align = MAX (align, ASAN_RED_ZONE_SIZE * BITS_PER_UNIT);
- }
if (align > BITS_PER_UNIT)
ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (align / BITS_PER_UNIT));
assemble_constant_contents (exp, XSTR (symbol, 0), align);
decl = SYMBOL_REF_DECL (symbol);
alignment = DECL_ALIGN (decl);
size = get_constant_size (DECL_INITIAL (decl));
+ if (flag_asan
+ && TREE_CODE (DECL_INITIAL (decl)) == STRING_CST
+ && asan_protect_global (DECL_INITIAL (decl)))
+ size += asan_red_zone_size (size);
}
else
{
alignment = DECL_ALIGN (decl);
size = tree_low_cst (DECL_SIZE_UNIT (decl), 1);
if (flag_asan && asan_protect_global (decl))
- size += asan_red_zone_size (size);
+ {
+ size += asan_red_zone_size (size);
+ alignment = MAX (alignment,
+ ASAN_RED_ZONE_SIZE * BITS_PER_UNIT);
+ }
}
/* Calculate the object's offset from the start of the block. */
}
else if (TREE_CONSTANT_POOL_ADDRESS_P (symbol))
{
+ HOST_WIDE_INT size;
decl = SYMBOL_REF_DECL (symbol);
assemble_constant_contents (DECL_INITIAL (decl), XSTR (symbol, 0),
DECL_ALIGN (decl));
- offset += get_constant_size (DECL_INITIAL (decl));
+ size = get_constant_size (DECL_INITIAL (decl));
+ offset += size;
+ if (flag_asan
+ && TREE_CODE (DECL_INITIAL (decl)) == STRING_CST
+ && asan_protect_global (DECL_INITIAL (decl)))
+ {
+ size = asan_red_zone_size (size);
+ assemble_zeros (size);
+ offset += size;
+ }
}
else
{
+ HOST_WIDE_INT size;
decl = SYMBOL_REF_DECL (symbol);
assemble_variable_contents (decl, XSTR (symbol, 0), false);
- offset += tree_low_cst (DECL_SIZE_UNIT (decl), 1);
+ size = tree_low_cst (DECL_SIZE_UNIT (decl), 1);
+ offset += size;
+ if (flag_asan && asan_protect_global (decl))
+ {
+ size = asan_red_zone_size (size);
+ assemble_zeros (size);
+ offset += size;
+ }
}
}
}