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dc249aaf57
This commit deals with various .c files that included system headers that are already pulled in by osdep.h, where the .c file includes osdep.h already itself. This commit was created with scripts/clean-includes: ./scripts/clean-includes '--git' 'misc' 'hw/core' 'semihosting' 'target/arm' 'target/i386/kvm/kvm.c' 'target/loongarch' 'target/riscv' 'tools' 'util' All .c should include qemu/osdep.h first. The script performs three related cleanups: * Ensure .c files include qemu/osdep.h first. * Including it in a .h is redundant, since the .c already includes it. Drop such inclusions. * Likewise, including headers qemu/osdep.h includes is redundant. Drop these, too. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20260116125830.926296-4-peter.maydell@linaro.org
117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/*
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* SPDX-License-Identifier: GPL-2.0-or-later
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* Host specific cpu identification for AArch64.
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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_LINUX
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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/hwcap.h>
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# include "elf.h"
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# endif
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# ifndef HWCAP2_BTI
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# define HWCAP2_BTI 0 /* added in glibc 2.32 */
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# endif
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#endif
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#ifdef CONFIG_ELF_AUX_INFO
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#include <sys/auxv.h>
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#endif
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#ifdef CONFIG_DARWIN
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# include <sys/sysctl.h>
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#endif
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#if defined(__OpenBSD__) && !defined(CONFIG_ELF_AUX_INFO)
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# include <machine/armreg.h>
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# include <machine/cpu.h>
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# include <sys/sysctl.h>
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#endif
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unsigned cpuinfo;
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#ifdef CONFIG_DARWIN
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static bool sysctl_for_bool(const char *name)
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{
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int val = 0;
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size_t len = sizeof(val);
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if (sysctlbyname(name, &val, &len, NULL, 0) == 0) {
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return val != 0;
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}
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/*
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* We might in the future ask for properties not present in older kernels,
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* but we're only asking about static properties, all of which should be
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* 'int'. So we shouldn't see ENOMEM (val too small), or any of the other
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* more exotic errors.
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*/
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assert(errno == ENOENT);
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return false;
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}
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#endif
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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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if (info) {
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return info;
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}
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info = CPUINFO_ALWAYS;
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#if defined(CONFIG_LINUX) || defined(CONFIG_ELF_AUX_INFO)
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unsigned long hwcap = qemu_getauxval(AT_HWCAP);
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info |= (hwcap & HWCAP_ATOMICS ? CPUINFO_LSE : 0);
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info |= (hwcap & HWCAP_USCAT ? CPUINFO_LSE2 : 0);
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info |= (hwcap & HWCAP_AES ? CPUINFO_AES : 0);
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info |= (hwcap & HWCAP_PMULL ? CPUINFO_PMULL : 0);
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unsigned long hwcap2 = qemu_getauxval(AT_HWCAP2);
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info |= (hwcap2 & HWCAP2_BTI ? CPUINFO_BTI : 0);
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#endif
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#ifdef CONFIG_DARWIN
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info |= sysctl_for_bool("hw.optional.arm.FEAT_LSE") * CPUINFO_LSE;
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info |= sysctl_for_bool("hw.optional.arm.FEAT_LSE2") * CPUINFO_LSE2;
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info |= sysctl_for_bool("hw.optional.arm.FEAT_AES") * CPUINFO_AES;
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info |= sysctl_for_bool("hw.optional.arm.FEAT_PMULL") * CPUINFO_PMULL;
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info |= sysctl_for_bool("hw.optional.arm.FEAT_BTI") * CPUINFO_BTI;
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#endif
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#if defined(__OpenBSD__) && !defined(CONFIG_ELF_AUX_INFO)
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int mib[2];
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uint64_t isar0;
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uint64_t pfr1;
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size_t len;
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mib[0] = CTL_MACHDEP;
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mib[1] = CPU_ID_AA64ISAR0;
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len = sizeof(isar0);
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if (sysctl(mib, 2, &isar0, &len, NULL, 0) != -1) {
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if (ID_AA64ISAR0_ATOMIC(isar0) >= ID_AA64ISAR0_ATOMIC_IMPL) {
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info |= CPUINFO_LSE;
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}
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if (ID_AA64ISAR0_AES(isar0) >= ID_AA64ISAR0_AES_BASE) {
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info |= CPUINFO_AES;
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}
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if (ID_AA64ISAR0_AES(isar0) >= ID_AA64ISAR0_AES_PMULL) {
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info |= CPUINFO_PMULL;
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}
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}
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mib[0] = CTL_MACHDEP;
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mib[1] = CPU_ID_AA64PFR1;
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len = sizeof(pfr1);
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if (sysctl(mib, 2, &pfr1, &len, NULL, 0) != -1) {
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if (ID_AA64PFR1_BT(pfr1) >= ID_AA64PFR1_BT_IMPL) {
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info |= CPUINFO_BTI;
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}
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}
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#endif
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cpuinfo = info;
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return info;
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}
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