mirror of
https://github.com/Motorhead1991/qemu.git
synced 2025-08-06 17:23:56 -06:00
ad08cb3f97
This includes:
- EXT.W.{B/H}
- CL{O/Z}.{W/D}, CT{O/Z}.{W/D}
- BYTEPICK.{W/D}
- REVB.{2H/4H/2W/D}
- REVH.{2W/D}
- BITREV.{4B/8B}, BITREV.{W/D}
- BSTRINS.{W/D}, BSTRPICK.{W/D}
- MASKEQZ, MASKNEZ
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220606124333.2060567-7-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* LoongArch emulation helpers for QEMU.
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*
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* Copyright (c) 2021 Loongson Technology Corporation Limited
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*/
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#include "qemu/osdep.h"
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#include "qemu/main-loop.h"
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#include "cpu.h"
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#include "qemu/host-utils.h"
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#include "exec/helper-proto.h"
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#include "exec/exec-all.h"
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#include "exec/cpu_ldst.h"
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#include "internals.h"
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/* Exceptions helpers */
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void helper_raise_exception(CPULoongArchState *env, uint32_t exception)
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{
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do_raise_exception(env, exception, GETPC());
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}
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target_ulong helper_bitrev_w(target_ulong rj)
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{
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return (int32_t)revbit32(rj);
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}
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target_ulong helper_bitrev_d(target_ulong rj)
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{
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return revbit64(rj);
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}
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target_ulong helper_bitswap(target_ulong v)
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{
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v = ((v >> 1) & (target_ulong)0x5555555555555555ULL) |
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((v & (target_ulong)0x5555555555555555ULL) << 1);
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v = ((v >> 2) & (target_ulong)0x3333333333333333ULL) |
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((v & (target_ulong)0x3333333333333333ULL) << 2);
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v = ((v >> 4) & (target_ulong)0x0F0F0F0F0F0F0F0FULL) |
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((v & (target_ulong)0x0F0F0F0F0F0F0F0FULL) << 4);
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return v;
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}
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