f94cc23475
reported, on APs. We already did this on BSP. Otherwise, the userspace software which depends on the features reported by the high CPUID levels is misbehaving. In particular, AVX detection is non-functional, depending on which CPU thread happens to execute when doing CPUID. Another victim is the libthr signal handlers interposer, which needs to save full FPU extended state. Reported and tested by: Andre Meiser <ortadur@web.de> Sponsored by: The FreeBSD Foundation MFC after: 2 weeks
139 lines
4.8 KiB
C
139 lines
4.8 KiB
C
/*-
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* Copyright (c) 1995 Bruce D. Evans.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_MD_VAR_H_
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#define _MACHINE_MD_VAR_H_
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/*
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* Miscellaneous machine-dependent declarations.
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*/
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extern long Maxmem;
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extern u_int basemem; /* PA of original top of base memory */
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extern int busdma_swi_pending;
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extern u_int cpu_exthigh;
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extern u_int cpu_feature;
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extern u_int cpu_feature2;
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extern u_int amd_feature;
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extern u_int amd_feature2;
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extern u_int amd_pminfo;
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extern u_int via_feature_rng;
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extern u_int via_feature_xcrypt;
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extern u_int cpu_clflush_line_size;
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extern u_int cpu_stdext_feature;
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extern u_int cpu_stdext_feature2;
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extern u_int cpu_fxsr;
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extern u_int cpu_high;
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extern u_int cpu_id;
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extern u_int cpu_max_ext_state_size;
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extern u_int cpu_mxcsr_mask;
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extern u_int cpu_procinfo;
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extern u_int cpu_procinfo2;
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extern char cpu_vendor[];
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extern u_int cpu_vendor_id;
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extern u_int cpu_mon_mwait_flags;
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extern u_int cpu_mon_min_size;
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extern u_int cpu_mon_max_size;
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extern u_int cpu_maxphyaddr;
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extern u_int cyrix_did;
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#if defined(I586_CPU) && !defined(NO_F00F_HACK)
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extern int has_f00f_bug;
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#endif
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extern u_int hv_high;
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extern char hv_vendor[];
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extern char kstack[];
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extern char sigcode[];
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extern int szsigcode;
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#ifdef COMPAT_FREEBSD4
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extern int szfreebsd4_sigcode;
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#endif
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#ifdef COMPAT_43
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extern int szosigcode;
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#endif
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extern uint32_t *vm_page_dump;
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extern int vm_page_dump_size;
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extern int workaround_erratum383;
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extern int _udatasel;
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extern int _ucodesel;
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extern int use_xsave;
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extern uint64_t xsave_mask;
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typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
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struct pcb;
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union savefpu;
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struct thread;
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struct reg;
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struct fpreg;
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struct dbreg;
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struct dumperinfo;
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struct segment_descriptor;
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void *alloc_fpusave(int flags);
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void bcopyb(const void *from, void *to, size_t len);
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void busdma_swi(void);
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bool cpu_mwait_usable(void);
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void cpu_probe_amdc1e(void);
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void cpu_setregs(void);
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void cpu_switch_load_gs(void) __asm(__STRING(cpu_switch_load_gs));
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void doreti_iret(void) __asm(__STRING(doreti_iret));
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void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
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void doreti_popl_ds(void) __asm(__STRING(doreti_popl_ds));
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void doreti_popl_ds_fault(void) __asm(__STRING(doreti_popl_ds_fault));
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void doreti_popl_es(void) __asm(__STRING(doreti_popl_es));
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void doreti_popl_es_fault(void) __asm(__STRING(doreti_popl_es_fault));
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void doreti_popl_fs(void) __asm(__STRING(doreti_popl_fs));
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void doreti_popl_fs_fault(void) __asm(__STRING(doreti_popl_fs_fault));
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void dump_add_page(vm_paddr_t);
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void dump_drop_page(vm_paddr_t);
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void finishidentcpu(void);
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void fillw(int /*u_short*/ pat, void *base, size_t cnt);
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void fill_based_sd(struct segment_descriptor *sdp, uint32_t base);
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void initializecpu(void);
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void initializecpucache(void);
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bool intel_fix_cpuid(void);
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void i686_pagezero(void *addr);
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void sse2_pagezero(void *addr);
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void init_AMD_Elan_sc520(void);
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int is_physical_memory(vm_paddr_t addr);
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int isa_nmi(int cd);
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vm_paddr_t kvtop(void *addr);
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void panicifcpuunsupported(void);
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void ppro_reenable_apic(void);
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void printcpuinfo(void);
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void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int selec);
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int user_dbreg_trap(void);
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int minidumpsys(struct dumperinfo *);
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union savefpu *get_pcb_user_save_td(struct thread *td);
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union savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
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struct pcb *get_pcb_td(struct thread *td);
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#endif /* !_MACHINE_MD_VAR_H_ */
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