From f721e3ac031f892af46f255a47d7f54a91317b30 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:35 -0800 Subject: auto import from //depot/cupcake/@135843 --- host-utils.c | 104 ----------------------------------------------------------- 1 file changed, 104 deletions(-) delete mode 100644 host-utils.c (limited to 'host-utils.c') diff --git a/host-utils.c b/host-utils.c deleted file mode 100644 index f92c339..0000000 --- a/host-utils.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Utility compute operations used by translated code. - * - * Copyright (c) 2003 Fabrice Bellard - * Copyright (c) 2007 Aurelien Jarno - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "exec.h" -#include "host-utils.h" - -//#define DEBUG_MULDIV - -/* Long integer helpers */ -#if !defined(__x86_64__) -static void add128 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) -{ - *plow += a; - /* carry test */ - if (*plow < a) - (*phigh)++; - *phigh += b; -} - -static void neg128 (uint64_t *plow, uint64_t *phigh) -{ - *plow = ~*plow; - *phigh = ~*phigh; - add128(plow, phigh, 1, 0); -} - -static void mul64 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) -{ - uint32_t a0, a1, b0, b1; - uint64_t v; - - a0 = a; - a1 = a >> 32; - - b0 = b; - b1 = b >> 32; - - v = (uint64_t)a0 * (uint64_t)b0; - *plow = v; - *phigh = 0; - - v = (uint64_t)a0 * (uint64_t)b1; - add128(plow, phigh, v << 32, v >> 32); - - v = (uint64_t)a1 * (uint64_t)b0; - add128(plow, phigh, v << 32, v >> 32); - - v = (uint64_t)a1 * (uint64_t)b1; - *phigh += v; -} - -/* Unsigned 64x64 -> 128 multiplication */ -void mulu64 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) -{ - mul64(plow, phigh, a, b); -#if defined(DEBUG_MULDIV) - printf("mulu64: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n", - a, b, *phigh, *plow); -#endif -} - -/* Signed 64x64 -> 128 multiplication */ -void muls64 (uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b) -{ - int sa, sb; - - sa = (a < 0); - if (sa) - a = -a; - sb = (b < 0); - if (sb) - b = -b; - mul64(plow, phigh, a, b); - if (sa ^ sb) { - neg128(plow, phigh); - } -#if defined(DEBUG_MULDIV) - printf("muls64: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n", - a, b, *phigh, *plow); -#endif -} -#endif /* !defined(__x86_64__) */ -- cgit v1.1