qemu/util/cpuinfo-loongarch.c
Richard Henderson 0885f1221e util: Add cpuinfo for loongarch64
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Jiajie Chen <c@jia.je>
Message-Id: <20230916220151.526140-4-richard.henderson@linaro.org>
2023-11-06 08:27:21 -08:00

36 lines
673 B
C

/*
* SPDX-License-Identifier: GPL-2.0-or-later
* Host specific cpu identification for LoongArch.
*/
#include "qemu/osdep.h"
#include "host/cpuinfo.h"
#ifdef CONFIG_GETAUXVAL
# include <sys/auxv.h>
#else
# include "elf.h"
#endif
#include <asm/hwcap.h>
unsigned cpuinfo;
/* Called both as constructor and (possibly) via other constructors. */
unsigned __attribute__((constructor)) cpuinfo_init(void)
{
unsigned info = cpuinfo;
unsigned long hwcap;
if (info) {
return info;
}
hwcap = qemu_getauxval(AT_HWCAP);
info = CPUINFO_ALWAYS;
info |= (hwcap & HWCAP_LOONGARCH_LSX ? CPUINFO_LSX : 0);
cpuinfo = info;
return info;
}