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623d7e3551
Move the code from tcg/. Fix a bug in that PPC_FEATURE2_ARCH_3_10 is actually spelled PPC_FEATURE2_ARCH_3_1. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* SPDX-License-Identifier: GPL-2.0-or-later
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* Host specific cpu indentification for ppc.
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*/
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#include "qemu/osdep.h"
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#include "host/cpuinfo.h"
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#ifdef CONFIG_GETAUXVAL
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# include <sys/auxv.h>
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#else
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# include <asm/cputable.h>
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# include "elf.h"
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#endif
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unsigned cpuinfo;
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/* Called both as constructor and (possibly) via other constructors. */
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unsigned __attribute__((constructor)) cpuinfo_init(void)
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{
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unsigned info = cpuinfo;
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unsigned long hwcap, hwcap2;
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if (info) {
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return info;
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}
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hwcap = qemu_getauxval(AT_HWCAP);
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hwcap2 = qemu_getauxval(AT_HWCAP2);
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info = CPUINFO_ALWAYS;
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/* Version numbers are monotonic, and so imply all lower versions. */
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if (hwcap2 & PPC_FEATURE2_ARCH_3_1) {
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info |= CPUINFO_V3_1 | CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06;
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} else if (hwcap2 & PPC_FEATURE2_ARCH_3_00) {
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info |= CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06;
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} else if (hwcap2 & PPC_FEATURE2_ARCH_2_07) {
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info |= CPUINFO_V2_07 | CPUINFO_V2_06;
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} else if (hwcap & PPC_FEATURE_ARCH_2_06) {
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info |= CPUINFO_V2_06;
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}
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if (hwcap2 & PPC_FEATURE2_HAS_ISEL) {
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info |= CPUINFO_ISEL;
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}
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if (hwcap & PPC_FEATURE_HAS_ALTIVEC) {
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info |= CPUINFO_ALTIVEC;
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/* We only care about the portion of VSX that overlaps Altivec. */
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if (hwcap & PPC_FEATURE_HAS_VSX) {
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info |= CPUINFO_VSX;
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}
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}
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cpuinfo = info;
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return info;
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}
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