23eeeff7be
handling clean and functional as 5.x evolves. This allows some of the nasty bandaids in the 5.x codepaths to be unwound. Encapsulate 4.x signal handling under COMPAT_FREEBSD4 (there is an anti-foot-shooting measure in place, 5.x folks need this for a while) and finish encapsulating the older stuff under COMPAT_43. Since the ancient stuff is required on alpha (longjmp(3) passes a 'struct osigcontext *' to the current sigreturn(2), instead of the 'ucontext_t *' that sigreturn is supposed to take), add a compile time check to prevent foot shooting there too. Add uniform COMPAT_43 stubs for ia64/sparc64/powerpc. Tested on: i386, alpha, ia64. Compiled on sparc64 (a few days ago). Approved by: re
102 lines
3.9 KiB
C
102 lines
3.9 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 atdevbase; /* offset in virtual memory of ISA io mem */
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extern void (*bcopy_vector)(const void *from, void *to, size_t len);
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extern int busdma_swi_pending;
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extern int (*copyin_vector)(const void *udaddr, void *kaddr, size_t len);
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extern int (*copyout_vector)(const void *kaddr, void *udaddr, size_t len);
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extern u_int cpu_feature;
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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_fxsr;
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extern char cpu_vendor[];
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extern u_int cyrix_did;
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extern uint16_t *elan_mmcr;
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extern char kstack[];
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#ifdef PC98
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extern int need_pre_dma_flush;
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extern int need_post_dma_flush;
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#endif
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extern void (*ovbcopy_vector)(const void *from, void *to, size_t len);
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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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typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
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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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void bcopyb(const void *from, void *to, size_t len);
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void busdma_swi(void);
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void cpu_halt(void);
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void cpu_reset(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 fillw(int /*u_short*/ pat, void *base, size_t cnt);
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void i486_bzero(void *buf, size_t len);
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void i586_bcopy(const void *from, void *to, size_t len);
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void i586_bzero(void *buf, size_t len);
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int i586_copyin(const void *udaddr, void *kaddr, size_t len);
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int i586_copyout(const void *kaddr, void *udaddr, size_t len);
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void i686_pagezero(void *addr);
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void init_AMD_Elan_sc520(void);
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int is_physical_memory(vm_offset_t addr);
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u_long kvtop(void *addr);
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void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int selec);
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void swi_vm(void *);
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int user_dbreg_trap(void);
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#endif /* !_MACHINE_MD_VAR_H_ */
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