1214152Sed/* ===-- int_lib.h - configuration header for compiler-rt  -----------------===
2214152Sed *
3214152Sed *                     The LLVM Compiler Infrastructure
4214152Sed *
5222656Sed * This file is dual licensed under the MIT and the University of Illinois Open
6222656Sed * Source Licenses. See LICENSE.TXT for details.
7214152Sed *
8214152Sed * ===----------------------------------------------------------------------===
9214152Sed *
10214152Sed * This file is a configuration header for compiler-rt.
11214152Sed * This file is not part of the interface of this library.
12214152Sed *
13214152Sed * ===----------------------------------------------------------------------===
14214152Sed */
15214152Sed
16214152Sed#ifndef INT_LIB_H
17214152Sed#define INT_LIB_H
18214152Sed
19229135Sed/* Assumption: Signed integral is 2's complement. */
20229135Sed/* Assumption: Right shift of signed negative is arithmetic shift. */
21229135Sed/* Assumption: Endianness is little or big (not mixed). */
22214152Sed
23229135Sed/* ABI macro definitions */
24214152Sed
25229135Sed#if __ARM_EABI__
26229135Sed# define ARM_EABI_FNALIAS(aeabi_name, name)         \
27229135Sed  void __aeabi_##aeabi_name() __attribute__((alias("__" #name)));
28245642Sandrew
29245642Sandrew# if !defined(__clang__) && defined(__GNUC__) && \
30245642Sandrew     (__GNUC__ < 4 || __GNUC__ == 4 && __GNUC_MINOR__ < 5)
31245642Sandrew/* The pcs attribute was introduced in GCC 4.5.0 */
32245642Sandrew#  define COMPILER_RT_ABI
33245642Sandrew# else
34245642Sandrew#  define COMPILER_RT_ABI __attribute__((pcs("aapcs")))
35245642Sandrew# endif
36245642Sandrew
37214152Sed#else
38229135Sed# define ARM_EABI_FNALIAS(aeabi_name, name)
39229135Sed# define COMPILER_RT_ABI
40214152Sed#endif
41214152Sed
42229135Sed/* Include the standard compiler builtin headers we use functionality from. */
43229135Sed#include <limits.h>
44229135Sed#include <stdint.h>
45229135Sed#include <stdbool.h>
46229135Sed#include <float.h>
47214152Sed
48229135Sed/* Include the commonly used internal type definitions. */
49229135Sed#include "int_types.h"
50214152Sed
51229135Sed/* Include internal utility function declarations. */
52229135Sed#include "int_util.h"
53214152Sed
54230021Sed/*
55230021Sed * Workaround for LLVM bug 11663.  Prevent endless recursion in
56230021Sed * __c?zdi2(), where calls to __builtin_c?z() are expanded to
57230021Sed * __c?zdi2() instead of __c?zsi2().
58230021Sed *
59230021Sed * Instead of placing this workaround in c?zdi2.c, put it in this
60230021Sed * global header to prevent other C files from making the detour
61230021Sed * through __c?zdi2() as well.
62230021Sed *
63230021Sed * This problem has only been observed on FreeBSD for sparc64 and
64230021Sed * mips64 with GCC 4.2.1.
65230021Sed */
66230021Sed#if defined(__FreeBSD__) && (defined(__sparc64__) || \
67230021Sed    defined(__mips_n64) || defined(__mips_o64))
68230021Sedsi_int __clzsi2(si_int);
69230021Sedsi_int __ctzsi2(si_int);
70230021Sed#define	__builtin_clz	__clzsi2
71230021Sed#define	__builtin_ctz	__ctzsi2
72230021Sed#endif
73230021Sed
74214152Sed#endif /* INT_LIB_H */
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