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Unified Diff: third_party/afl/src/types.h

Issue 2075883002: Add American Fuzzy Lop (afl) to third_party/afl/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Fix nits Created 4 years, 6 months ago
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Index: third_party/afl/src/types.h
diff --git a/third_party/afl/src/types.h b/third_party/afl/src/types.h
new file mode 100644
index 0000000000000000000000000000000000000000..58d6be51e2d06a20369dbd18694009bae2cdc84b
--- /dev/null
+++ b/third_party/afl/src/types.h
@@ -0,0 +1,79 @@
+/*
+ american fuzzy lop - type definitions and minor macros
+ ------------------------------------------------------
+
+ Written and maintained by Michal Zalewski <lcamtuf@google.com>
+
+ Copyright 2013, 2014, 2015 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ */
+
+#ifndef _HAVE_TYPES_H
+#define _HAVE_TYPES_H
+
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+
+/*
+
+ Ugh. There is an unintended compiler / glibc #include glitch caused by
+ combining the u64 type an %llu in format strings, necessitating a workaround.
+
+ In essence, the compiler is always looking for 'unsigned long long' for %llu.
+ On 32-bit systems, the u64 type (aliased to uint64_t) is expanded to
+ 'unsigned long long' in <bits/types.h>, so everything checks out.
+
+ But on 64-bit systems, it is #ifdef'ed in the same file as 'unsigned long'.
+ Now, it only happens in circumstances where the type happens to have the
+ expected bit width, *but* the compiler does not know that... and complains
+ about 'unsigned long' being unsafe to pass to %llu.
+
+ */
+
+#ifdef __x86_64__
+typedef unsigned long long u64;
+#else
+typedef uint64_t u64;
+#endif /* ^sizeof(...) */
+
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
+
+#ifndef MIN
+# define MIN(_a,_b) ((_a) > (_b) ? (_b) : (_a))
+# define MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
+#endif /* !MIN */
+
+#define SWAP16(_x) ({ \
+ u16 _ret = (_x); \
+ (u16)((_ret << 8) | (_ret >> 8)); \
+ })
+
+#define SWAP32(_x) ({ \
+ u32 _ret = (_x); \
+ (u32)((_ret << 24) | (_ret >> 24) | \
+ ((_ret << 8) & 0x00FF0000) | \
+ ((_ret >> 8) & 0x0000FF00)); \
+ })
+
+#define R(x) (random() % (x))
+
+#define STRINGIFY_INTERNAL(x) #x
+#define STRINGIFY(x) STRINGIFY_INTERNAL(x)
+
+#define MEM_BARRIER() \
+ asm volatile("" ::: "memory")
+
+#endif /* ! _HAVE_TYPES_H */
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