qemu/util/cpuinfo-ppc.c
Natanael Copa 1d513e06d9 util: fix build with musl libc on ppc64le
Use PPC_FEATURE2_ISEL and PPC_FEATURE2_VEC_CRYPTO from linux headers
instead of the GNU specific PPC_FEATURE2_HAS_ISEL and
PPC_FEATURE2_HAS_VEC_CRYPTO. This fixes build with musl libc.

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1861
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Fixes: 63922f467a ("tcg/ppc: Replace HAVE_ISEL macro with a variable")
Fixes: 68f340d4cd ("tcg/ppc: Enable Altivec detection")
Message-Id: <20231219105236.7059-1-ncopa@alpinelinux.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-01-11 08:48:16 +11:00

65 lines
1.7 KiB
C

/*
* SPDX-License-Identifier: GPL-2.0-or-later
* Host specific cpu identification for ppc.
*/
#include "qemu/osdep.h"
#include "host/cpuinfo.h"
#include <asm/cputable.h>
#ifdef CONFIG_GETAUXVAL
# include <sys/auxv.h>
#else
# include "elf.h"
#endif
unsigned cpuinfo;
/* Called both as constructor and (possibly) via other constructors. */
unsigned __attribute__((constructor)) cpuinfo_init(void)
{
unsigned info = cpuinfo;
unsigned long hwcap, hwcap2;
if (info) {
return info;
}
hwcap = qemu_getauxval(AT_HWCAP);
hwcap2 = qemu_getauxval(AT_HWCAP2);
info = CPUINFO_ALWAYS;
/* Version numbers are monotonic, and so imply all lower versions. */
if (hwcap2 & PPC_FEATURE2_ARCH_3_1) {
info |= CPUINFO_V3_1 | CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06;
} else if (hwcap2 & PPC_FEATURE2_ARCH_3_00) {
info |= CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06;
} else if (hwcap2 & PPC_FEATURE2_ARCH_2_07) {
info |= CPUINFO_V2_07 | CPUINFO_V2_06;
} else if (hwcap & PPC_FEATURE_ARCH_2_06) {
info |= CPUINFO_V2_06;
}
if (hwcap2 & PPC_FEATURE2_ISEL) {
info |= CPUINFO_ISEL;
}
if (hwcap & PPC_FEATURE_HAS_ALTIVEC) {
info |= CPUINFO_ALTIVEC;
/* We only care about the portion of VSX that overlaps Altivec. */
if (hwcap & PPC_FEATURE_HAS_VSX) {
info |= CPUINFO_VSX;
/*
* We use VSX especially for little-endian, but we should
* always have both anyway, since VSX came with Power7
* and crypto came with Power8.
*/
if (hwcap2 & PPC_FEATURE2_VEC_CRYPTO) {
info |= CPUINFO_CRYPTO;
}
}
}
cpuinfo = info;
return info;
}