1 /* ===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------=== 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 implements __cmpdi2 for the compiler_rt library. 11 * 12 * ===----------------------------------------------------------------------=== 13 */ 14 15 #include "int_lib.h" 16 17 /* Returns: if (a < b) returns 0 18 * if (a == b) returns 1 19 * if (a > b) returns 2 20 */ 21 22 COMPILER_RT_ABI si_int 23 __cmpdi2(di_int a, di_int b) 24 { 25 dwords x; 26 x.all = a; 27 dwords y; 28 y.all = b; 29 if (x.s.high < y.s.high) 30 return 0; 31 if (x.s.high > y.s.high) 32 return 2; 33 if (x.s.low < y.s.low) 34 return 0; 35 if (x.s.low > y.s.low) 36 return 2; 37 return 1; 38 } 39 40 #ifdef __ARM_EABI__ 41 /* Returns: if (a < b) returns -1 42 * if (a == b) returns 0 43 * if (a > b) returns 1 44 */ 45 COMPILER_RT_ABI si_int 46 __aeabi_lcmp(di_int a, di_int b) 47 { 48 return __cmpdi2(a, b) - 1; 49 } 50 #endif 51 52
