1 /* ===-- int_lib.h - configuration header for compiler-rt -----------------=== 2 * 3 * The LLVM Compiler Infrastructure 4 * 5 * This file is dual licensed under the MIT and the University of Illinois Open 6 * Source Licenses. See LICENSE.TXT for details. 7 * 8 * ===----------------------------------------------------------------------=== 9 * 10 * This file is a configuration header for compiler-rt. 11 * This file is not part of the interface of this library. 12 * 13 * ===----------------------------------------------------------------------=== 14 */ 15 16 #ifndef INT_LIB_H 17 #define INT_LIB_H 18 19 /* Assumption: Signed integral is 2's complement. */ 20 /* Assumption: Right shift of signed negative is arithmetic shift. */ 21 /* Assumption: Endianness is little or big (not mixed). */ 22 23 /* ABI macro definitions */ 24 25 #if __ARM_EABI__ 26 # define ARM_EABI_FNALIAS(aeabi_name, name) \ 27 void __aeabi_##aeabi_name() __attribute__((alias("__" #name))); 28 29 # if !defined(__clang__) && defined(__GNUC__) && \ 30 (__GNUC__ < 4 || __GNUC__ == 4 && __GNUC_MINOR__ < 5) 31 /* The pcs attribute was introduced in GCC 4.5.0 */ 32 # define COMPILER_RT_ABI 33 # else 34 # define COMPILER_RT_ABI __attribute__((pcs("aapcs"))) 35 # endif 36 37 #else 38 # define ARM_EABI_FNALIAS(aeabi_name, name) 39 # if defined(__arm__) && defined(_WIN32) 40 # define COMPILER_RT_ABI __attribute__((pcs("aapcs"))) 41 # else 42 # define COMPILER_RT_ABI 43 # endif 44 #endif 45 46 #if defined(__NetBSD__) && (defined(_KERNEL) || defined(_STANDALONE)) 47 /* 48 * Kernel and boot environment can't use normal headers, 49 * so use the equivalent system headers. 50 */ 51 # include <machine/limits.h> 52 # include <sys/stdint.h> 53 # include <sys/types.h> 54 #else 55 /* Include the standard compiler builtin headers we use functionality from. */ 56 # include <limits.h> 57 # include <stdint.h> 58 # include <stdbool.h> 59 # include <float.h> 60 #endif 61 62 /* Include the commonly used internal type definitions. */ 63 #include "int_types.h" 64 65 /* Include internal utility function declarations. */ 66 #include "int_util.h" 67 68 /* 69 * Workaround for LLVM bug 11663. Prevent endless recursion in 70 * __c?zdi2(), where calls to __builtin_c?z() are expanded to 71 * __c?zdi2() instead of __c?zsi2(). 72 * 73 * Instead of placing this workaround in c?zdi2.c, put it in this 74 * global header to prevent other C files from making the detour 75 * through __c?zdi2() as well. 76 * 77 * This problem has only been observed on FreeBSD for sparc64 and 78 * mips64 with GCC 4.2.1. 79 */ 80 #if defined(__FreeBSD__) && (defined(__sparc64__) || \ 81 defined(__mips_n64) || defined(__mips_o64)) 82 si_int __clzsi2(si_int); 83 si_int __ctzsi2(si_int); 84 #define __builtin_clz __clzsi2 85 #define __builtin_ctz __ctzsi2 86 #endif /* FreeBSD && (sparc64 || mips_n64 || mips_o64) */ 87 88 COMPILER_RT_ABI si_int __paritysi2(si_int a); 89 COMPILER_RT_ABI si_int __paritydi2(di_int a); 90 91 COMPILER_RT_ABI di_int __divdi3(di_int a, di_int b); 92 COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b); 93 COMPILER_RT_ABI su_int __udivsi3(su_int n, su_int d); 94 95 COMPILER_RT_ABI su_int __udivmodsi4(su_int a, su_int b, su_int* rem); 96 COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int* rem); 97 #ifdef CRT_HAS_128BIT 98 COMPILER_RT_ABI si_int __clzti2(ti_int a); 99 COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem); 100 #endif 101 102 #endif /* INT_LIB_H */ 103