/usr/lib/gcc-cross/powerpc64-linux-gnu/7/plugin/include/asan.h is in gcc-7-plugin-dev-powerpc64-linux-gnu 7.3.0-16ubuntu3cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | /* AddressSanitizer, a fast memory error detector.
Copyright (C) 2011-2017 Free Software Foundation, Inc.
Contributed by Kostya Serebryany <kcc@google.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef TREE_ASAN
#define TREE_ASAN
extern void asan_function_start (void);
extern void asan_finish_file (void);
extern rtx_insn *asan_emit_stack_protection (rtx, rtx, unsigned int,
HOST_WIDE_INT *, tree *, int);
extern bool asan_protect_global (tree);
extern void initialize_sanitizer_builtins (void);
extern tree asan_dynamic_init_call (bool);
extern bool asan_expand_check_ifn (gimple_stmt_iterator *, bool);
extern bool asan_expand_mark_ifn (gimple_stmt_iterator *);
extern bool asan_expand_poison_ifn (gimple_stmt_iterator *, bool *,
hash_map<tree, tree> &);
extern gimple_stmt_iterator create_cond_insert_point
(gimple_stmt_iterator *, bool, bool, bool, basic_block *, basic_block *);
/* Alias set for accessing the shadow memory. */
extern alias_set_type asan_shadow_set;
/* Hash set of labels that are either used in a goto, or their address
has been taken. */
extern hash_set <tree> *asan_used_labels;
/* Shadow memory is found at
(address >> ASAN_SHADOW_SHIFT) + asan_shadow_offset (). */
#define ASAN_SHADOW_SHIFT 3
#define ASAN_SHADOW_GRANULARITY (1UL << ASAN_SHADOW_SHIFT)
/* Red zone size, stack and global variables are padded by ASAN_RED_ZONE_SIZE
up to 2 * ASAN_RED_ZONE_SIZE - 1 bytes. */
#define ASAN_RED_ZONE_SIZE 32
/* Shadow memory values for stack protection. Left is below protected vars,
the first pointer in stack corresponding to that offset contains
ASAN_STACK_FRAME_MAGIC word, the second pointer to a string describing
the frame. Middle is for padding in between variables, right is
above the last protected variable and partial immediately after variables
up to ASAN_RED_ZONE_SIZE alignment. */
#define ASAN_STACK_MAGIC_LEFT 0xf1
#define ASAN_STACK_MAGIC_MIDDLE 0xf2
#define ASAN_STACK_MAGIC_RIGHT 0xf3
#define ASAN_STACK_MAGIC_USE_AFTER_RET 0xf5
#define ASAN_STACK_MAGIC_USE_AFTER_SCOPE 0xf8
#define ASAN_STACK_FRAME_MAGIC 0x41b58ab3
#define ASAN_STACK_RETIRED_MAGIC 0x45e0360e
#define ASAN_USE_AFTER_SCOPE_ATTRIBUTE "use after scope memory"
/* Various flags for Asan builtins. */
enum asan_check_flags
{
ASAN_CHECK_STORE = 1 << 0,
ASAN_CHECK_SCALAR_ACCESS = 1 << 1,
ASAN_CHECK_NON_ZERO_LEN = 1 << 2,
ASAN_CHECK_LAST = 1 << 3
};
/* Flags for Asan check builtins. */
#define IFN_ASAN_MARK_FLAGS DEF(POISON), DEF(UNPOISON)
enum asan_mark_flags
{
#define DEF(X) ASAN_MARK_##X
IFN_ASAN_MARK_FLAGS
#undef DEF
};
/* Return true if STMT is ASAN_MARK with FLAG as first argument. */
extern bool asan_mark_p (gimple *stmt, enum asan_mark_flags flag);
/* Return the size of padding needed to insert after a protected
decl of SIZE. */
static inline unsigned int
asan_red_zone_size (unsigned int size)
{
unsigned int c = size & (ASAN_RED_ZONE_SIZE - 1);
return c ? 2 * ASAN_RED_ZONE_SIZE - c : ASAN_RED_ZONE_SIZE;
}
extern bool set_asan_shadow_offset (const char *);
extern void set_sanitized_sections (const char *);
extern bool asan_sanitize_stack_p (void);
/* Return TRUE if builtin with given FCODE will be intercepted by
libasan. */
static inline bool
asan_intercepted_p (enum built_in_function fcode)
{
return fcode == BUILT_IN_INDEX
|| fcode == BUILT_IN_MEMCHR
|| fcode == BUILT_IN_MEMCMP
|| fcode == BUILT_IN_MEMCPY
|| fcode == BUILT_IN_MEMMOVE
|| fcode == BUILT_IN_MEMSET
|| fcode == BUILT_IN_STRCASECMP
|| fcode == BUILT_IN_STRCAT
|| fcode == BUILT_IN_STRCHR
|| fcode == BUILT_IN_STRCMP
|| fcode == BUILT_IN_STRCPY
|| fcode == BUILT_IN_STRDUP
|| fcode == BUILT_IN_STRLEN
|| fcode == BUILT_IN_STRNCASECMP
|| fcode == BUILT_IN_STRNCAT
|| fcode == BUILT_IN_STRNCMP
|| fcode == BUILT_IN_STRCSPN
|| fcode == BUILT_IN_STRPBRK
|| fcode == BUILT_IN_STRSPN
|| fcode == BUILT_IN_STRSTR
|| fcode == BUILT_IN_STRNCPY;
}
/* Return TRUE if we should instrument for use-after-scope sanity checking. */
static inline bool
asan_sanitize_use_after_scope (void)
{
return (flag_sanitize_address_use_after_scope && asan_sanitize_stack_p ());
}
static inline bool
asan_no_sanitize_address_p (void)
{
return lookup_attribute ("no_sanitize_address",
DECL_ATTRIBUTES (current_function_decl));
}
/* Return true if DECL should be guarded on the stack. */
static inline bool
asan_protect_stack_decl (tree decl)
{
return DECL_P (decl)
&& (!DECL_ARTIFICIAL (decl)
|| (asan_sanitize_use_after_scope () && TREE_ADDRESSABLE (decl)));
}
#endif /* TREE_ASAN */
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