d1de5698df
All page zeroing is using temporal stores with rep movs*, the routine is unused for several years. Should a need arise for zeroing using non-temporal stores, a more optimized variant can be implemented with a more descriptive name.
94 lines
3.7 KiB
C
94 lines
3.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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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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#include <x86/x86_var.h>
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extern char ctx_switch_xsave[];
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extern char ctx_switch_xsave32[];
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extern int hw_lower_amd64_sharedpage;
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extern int hw_ibrs_disable;
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extern int hw_ssb_disable;
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extern int nmi_flush_l1d_sw;
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extern int syscall_ret_l1d_flush_mode;
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extern vm_paddr_t intel_graphics_stolen_base;
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extern vm_paddr_t intel_graphics_stolen_size;
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extern int la57;
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/*
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* The file "conf/ldscript.amd64" defines the symbol "kernphys". Its
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* value is the physical address at which the kernel is loaded.
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*/
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extern char kernphys[];
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struct savefpu;
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struct sysentvec;
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void amd64_conf_fast_syscall(void);
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void amd64_db_resume_dbreg(void);
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void amd64_lower_shared_page(struct sysentvec *);
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void amd64_bsp_pcpu_init1(struct pcpu *pc);
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void amd64_bsp_pcpu_init2(uint64_t rsp0);
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void amd64_bsp_ist_init(struct pcpu *pc);
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void amd64_syscall(struct thread *td, int traced);
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void amd64_syscall_ret_flush_l1d(int error);
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void amd64_syscall_ret_flush_l1d_recalc(void);
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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 flush_l1d_sw_abi(void);
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void ld_ds(void) __asm(__STRING(ld_ds));
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void ld_es(void) __asm(__STRING(ld_es));
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void ld_fs(void) __asm(__STRING(ld_fs));
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void ld_gs(void) __asm(__STRING(ld_gs));
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void ld_fsbase(void) __asm(__STRING(ld_fsbase));
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void ld_gsbase(void) __asm(__STRING(ld_gsbase));
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void ds_load_fault(void) __asm(__STRING(ds_load_fault));
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void es_load_fault(void) __asm(__STRING(es_load_fault));
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void fs_load_fault(void) __asm(__STRING(fs_load_fault));
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void gs_load_fault(void) __asm(__STRING(gs_load_fault));
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void fsbase_load_fault(void) __asm(__STRING(fsbase_load_fault));
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void gsbase_load_fault(void) __asm(__STRING(gsbase_load_fault));
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void fpstate_drop(struct thread *td);
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void pagezero(void *addr);
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void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
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void set_top_of_stack_td(struct thread *td);
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struct savefpu *get_pcb_user_save_td(struct thread *td);
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struct savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
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void pci_early_quirks(void);
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#endif /* !_MACHINE_MD_VAR_H_ */
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