1 files changed, 171 insertions, 0 deletions
diff --git a/lib/compiler-rt/builtins/int_lib.h b/lib/compiler-rt/builtins/int_lib.h
new file mode 100644
index 0000000..04ea2d9
--- /dev/null
+++ b/lib/compiler-rt/builtins/int_lib.h
@@ -0,0 +1,171 @@
+//===-- int_lib.h - configuration header for compiler-rt  -----------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a configuration header for compiler-rt.
+// This file is not part of the interface of this library.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef INT_LIB_H
+#define INT_LIB_H
+
+// Assumption: Signed integral is 2's complement.
+// Assumption: Right shift of signed negative is arithmetic shift.
+// Assumption: Endianness is little or big (not mixed).
+
+// ABI macro definitions
+
+#if __ARM_EABI__
+#ifdef COMPILER_RT_ARMHF_TARGET
+#define COMPILER_RT_ABI
+#else
+#define COMPILER_RT_ABI __attribute__((__pcs__("aapcs")))
+#endif
+#else
+#define COMPILER_RT_ABI
+#endif
+
+#define AEABI_RTABI __attribute__((__pcs__("aapcs")))
+
+#if defined(_MSC_VER) && !defined(__clang__)
+#define ALWAYS_INLINE __forceinline
+#define NOINLINE __declspec(noinline)
+#define NORETURN __declspec(noreturn)
+#define UNUSED
+#else
+#define ALWAYS_INLINE __attribute__((always_inline))
+#define NOINLINE __attribute__((noinline))
+#define NORETURN __attribute__((noreturn))
+#define UNUSED __attribute__((unused))
+#endif
+
+#define STR(a) #a
+#define XSTR(a) STR(a)
+#define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name
+
+#if defined(__ELF__) || defined(__MINGW32__) || defined(__wasm__) ||           \
+    defined(_AIX)    || defined(__CYGWIN__)
+#define COMPILER_RT_ALIAS(name, aliasname) \
+  COMPILER_RT_ABI __typeof(name) aliasname __attribute__((__alias__(#name)));
+#elif defined(__APPLE__)
+#if defined(VISIBILITY_HIDDEN)
+#define COMPILER_RT_ALIAS_VISIBILITY(name) \
+  __asm__(".private_extern " SYMBOL_NAME(name));
+#else
+#define COMPILER_RT_ALIAS_VISIBILITY(name)
+#endif
+#define COMPILER_RT_ALIAS(name, aliasname) \
+  __asm__(".globl " SYMBOL_NAME(aliasname)); \
+  COMPILER_RT_ALIAS_VISIBILITY(aliasname) \
+  __asm__(SYMBOL_NAME(aliasname) " = " SYMBOL_NAME(name)); \
+  COMPILER_RT_ABI __typeof(name) aliasname;
+#elif defined(_WIN32)
+#define COMPILER_RT_ALIAS(name, aliasname)
+#else
+#error Unsupported target
+#endif
+
+#if (defined(__FreeBSD__) || defined(__NetBSD__)) &&                           \
+    (defined(_KERNEL) || defined(_STANDALONE))
+//
+// Kernel and boot environment can't use normal headers,
+// so use the equivalent system headers.
+// NB: FreeBSD (and OpenBSD) deprecate machine/limits.h in
+// favour of sys/limits.h, so prefer the former, but fall
+// back on the latter if not available since NetBSD only has
+// the latter.
+//
+#if defined(__has_include) && __has_include(<sys/limits.h>)
+#include <sys/limits.h>
+#else
+#include <machine/limits.h>
+#endif
+#include <sys/stdint.h>
+#include <sys/types.h>
+#else
+// Include the standard compiler builtin headers we use functionality from.
+#include <float.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
+#endif
+
+// Include the commonly used internal type definitions.
+#include "int_types.h"
+
+// Include internal utility function declarations.
+#include "int_util.h"
+
+COMPILER_RT_ABI int __paritysi2(si_int a);
+COMPILER_RT_ABI int __paritydi2(di_int a);
+
+COMPILER_RT_ABI di_int __divdi3(di_int a, di_int b);
+COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b);
+COMPILER_RT_ABI su_int __udivsi3(su_int n, su_int d);
+
+COMPILER_RT_ABI su_int __udivmodsi4(su_int a, su_int b, su_int *rem);
+COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem);
+#ifdef CRT_HAS_128BIT
+COMPILER_RT_ABI int __clzti2(ti_int a);
+COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem);
+#endif
+
+// Definitions for builtins unavailable on MSVC
+#if defined(_MSC_VER) && !defined(__clang__)
+#include <intrin.h>
+
+int __inline __builtin_ctz(uint32_t value) {
+  unsigned long trailing_zero = 0;
+  if (_BitScanForward(&trailing_zero, value))
+    return trailing_zero;
+  return 32;
+}
+
+int __inline __builtin_clz(uint32_t value) {
+  unsigned long leading_zero = 0;
+  if (_BitScanReverse(&leading_zero, value))
+    return 31 - leading_zero;
+  return 32;
+}
+
+#if defined(_M_ARM) || defined(_M_X64)
+int __inline __builtin_clzll(uint64_t value) {
+  unsigned long leading_zero = 0;
+  if (_BitScanReverse64(&leading_zero, value))
+    return 63 - leading_zero;
+  return 64;
+}
+#else
+int __inline __builtin_clzll(uint64_t value) {
+  if (value == 0)
+    return 64;
+  uint32_t msh = (uint32_t)(value >> 32);
+  uint32_t lsh = (uint32_t)(value & 0xFFFFFFFF);
+  if (msh != 0)
+    return __builtin_clz(msh);
+  return 32 + __builtin_clz(lsh);
+}
+#endif
+
+#define __builtin_clzl __builtin_clzll
+
+bool __inline __builtin_sadd_overflow(int x, int y, int *result) {
+  if ((x < 0) != (y < 0)) {
+    *result = x + y;
+    return false;
+  }
+  int tmp = (unsigned int)x + (unsigned int)y;
+  if ((tmp < 0) != (x < 0))
+    return true;
+  *result = tmp;
+  return false;
+}
+
+#endif // defined(_MSC_VER) && !defined(__clang__)
+
+#endif // INT_LIB_H