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