90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/* libs/pixelflinger/codeflinger/ARMAssemblerInterface.cpp
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**
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** Copyright 2006, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#define LOG_TAG "pixelflinger-code"
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <log/log.h>
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#include "ARMAssemblerInterface.h"
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namespace android {
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// ----------------------------------------------------------------------------
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ARMAssemblerInterface::~ARMAssemblerInterface()
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{
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}
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// --------------------------------------------------------------------
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// The following two functions are static and used for initializers
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// in the original ARM code. The above versions (without __), are now
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// virtual, and can be overridden in the MIPS code. But since these are
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// needed at initialization time, they must be static. Not thrilled with
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// this implementation, but it works...
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uint32_t ARMAssemblerInterface::__immed12_pre(int32_t immed12, int W)
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{
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LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
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"LDR(B)/STR(B)/PLD immediate too big (%08x)",
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immed12);
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return (1<<24) | (((uint32_t(immed12)>>31)^1)<<23) |
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((W&1)<<21) | (abs(immed12)&0x7FF);
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}
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uint32_t ARMAssemblerInterface::__immed8_pre(int32_t immed8, int W)
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{
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uint32_t offset = abs(immed8);
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LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
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"LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
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immed8);
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return (1<<24) | (1<<22) | (((uint32_t(immed8)>>31)^1)<<23) |
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((W&1)<<21) | (((offset&0xF0)<<4)|(offset&0xF));
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}
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// The following four functions are required for address manipulation
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// These are virtual functions, which can be overridden by architectures
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// that need special handling of address values (e.g. 64-bit arch)
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void ARMAssemblerInterface::ADDR_LDR(int cc, int Rd,
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int Rn, uint32_t offset)
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{
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LDR(cc, Rd, Rn, offset);
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}
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void ARMAssemblerInterface::ADDR_STR(int cc, int Rd,
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int Rn, uint32_t offset)
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{
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STR(cc, Rd, Rn, offset);
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}
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void ARMAssemblerInterface::ADDR_ADD(int cc, int s,
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int Rd, int Rn, uint32_t Op2)
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{
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dataProcessing(opADD, cc, s, Rd, Rn, Op2);
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}
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void ARMAssemblerInterface::ADDR_SUB(int cc, int s,
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int Rd, int Rn, uint32_t Op2)
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{
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dataProcessing(opSUB, cc, s, Rd, Rn, Op2);
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}
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}; // namespace android
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