8708a04a61
This includes:
- CRC[C].W.{B/H/W/D}.W
- SYSCALL
- BREAK
- ASRT{LE/GT}.D
- RDTIME{L/H}.W, RDTIME.D
- CPUCFG
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: <20220606124333.2060567-10-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
84 lines
2.1 KiB
C
84 lines
2.1 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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#include "qemu/crc32c.h"
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#include <zlib.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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/* loongarch assert op */
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void helper_asrtle_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
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{
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if (rj > rk) {
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do_raise_exception(env, EXCCODE_ADEM, GETPC());
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}
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}
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void helper_asrtgt_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
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{
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if (rj <= rk) {
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do_raise_exception(env, EXCCODE_ADEM, GETPC());
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}
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}
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target_ulong helper_crc32(target_ulong val, target_ulong m, uint64_t sz)
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{
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uint8_t buf[8];
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target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
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m &= mask;
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stq_le_p(buf, m);
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return (int32_t) (crc32(val ^ 0xffffffff, buf, sz) ^ 0xffffffff);
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}
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target_ulong helper_crc32c(target_ulong val, target_ulong m, uint64_t sz)
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{
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uint8_t buf[8];
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target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
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m &= mask;
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stq_le_p(buf, m);
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return (int32_t) (crc32c(val, buf, sz) ^ 0xffffffff);
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}
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target_ulong helper_cpucfg(CPULoongArchState *env, target_ulong rj)
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{
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return rj > 21 ? 0 : env->cpucfg[rj];
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}
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