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/*
* Copyright (C) 2014 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.
*/
#ifndef ART_RUNTIME_ARCH_ARM64_ASM_SUPPORT_ARM64_S_
#define ART_RUNTIME_ARCH_ARM64_ASM_SUPPORT_ARM64_S_
#include "asm_support_arm64.h"
// Define special registers.
// Register holding Thread::Current().
#define xSELF x19
// Frame Pointer
#define xFP x29
// Link Register
#define xLR x30
// Define the intraprocedural linkage temporary registers.
#define xIP0 x16
#define wIP0 w16
#define xIP1 x17
#define wIP1 w17
#if defined(USE_READ_BARRIER) && defined(USE_BAKER_READ_BARRIER)
// Marking Register, holding Thread::Current()->GetIsGcMarking().
// Only used with the Concurrent Copying (CC) garbage
// collector, with the Baker read barrier configuration.
#define wMR w20
#endif
.macro ENTRY name
.type \name, #function
.hidden \name // Hide this as a global symbol, so we do not incur plt calls.
.global \name
/* Cache alignment for function entry */
.balign 16
\name:
.cfi_startproc
.endm
.macro END name
.cfi_endproc
.size \name, .-\name
.endm
.macro UNIMPLEMENTED name
ENTRY \name
brk 0
END \name
.endm
// Macro to poison (negate) the reference for heap poisoning.
.macro POISON_HEAP_REF rRef
#ifdef USE_HEAP_POISONING
neg \rRef, \rRef
#endif // USE_HEAP_POISONING
.endm
// Macro to unpoison (negate) the reference for heap poisoning.
.macro UNPOISON_HEAP_REF rRef
#ifdef USE_HEAP_POISONING
neg \rRef, \rRef
#endif // USE_HEAP_POISONING
.endm
#endif // ART_RUNTIME_ARCH_ARM64_ASM_SUPPORT_ARM64_S_