1/* libs/pixelflinger/codeflinger/ARMAssemblerInterface.cpp 2** 3** Copyright 2006, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18 19#include <errno.h> 20#include <stdlib.h> 21#include <stdint.h> 22#include <sys/types.h> 23 24#include <cutils/log.h> 25#include "codeflinger/ARMAssemblerInterface.h" 26 27namespace android { 28 29// ---------------------------------------------------------------------------- 30 31ARMAssemblerInterface::~ARMAssemblerInterface() 32{ 33} 34 35// -------------------------------------------------------------------- 36 37// The following two functions are static and used for initializers 38// in the original ARM code. The above versions (without __), are now 39// virtual, and can be overridden in the MIPS code. But since these are 40// needed at initialization time, they must be static. Not thrilled with 41// this implementation, but it works... 42 43uint32_t ARMAssemblerInterface::__immed12_pre(int32_t immed12, int W) 44{ 45 LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800, 46 "LDR(B)/STR(B)/PLD immediate too big (%08x)", 47 immed12); 48 return (1<<24) | (((uint32_t(immed12)>>31)^1)<<23) | 49 ((W&1)<<21) | (abs(immed12)&0x7FF); 50} 51 52uint32_t ARMAssemblerInterface::__immed8_pre(int32_t immed8, int W) 53{ 54 uint32_t offset = abs(immed8); 55 56 LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100, 57 "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)", 58 immed8); 59 60 return (1<<24) | (1<<22) | (((uint32_t(immed8)>>31)^1)<<23) | 61 ((W&1)<<21) | (((offset&0xF0)<<4)|(offset&0xF)); 62} 63 64 65}; // namespace android 66 67