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78afae27e5
There's no advantage in allowing nested external interrupts. In fact, it leads to a potential stack overrun. While here, put the interrupt vector in the trapframe, so as to compensate for the 36 cycle latency of reading cr.ivr. Further simplify assembly code by dealing with ASTs from C. Approved by: re (blanket)
101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/*-
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* Copyright (c) 1998 Doug Rabson
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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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*
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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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struct ia64_fdesc {
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uint64_t func;
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uint64_t gp;
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};
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#define FDESC_FUNC(fn) (((struct ia64_fdesc *) fn)->func)
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#define FDESC_GP(fn) (((struct ia64_fdesc *) fn)->gp)
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/* Convenience macros to decompose CFM & ar.pfs. */
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#define IA64_CFM_SOF(x) ((x) & 0x7f)
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#define IA64_CFM_SOL(x) (((x) >> 7) & 0x7f)
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#define IA64_CFM_SOR(x) (((x) >> 14) & 0x0f)
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#define IA64_CFM_RRB_GR(x) (((x) >> 18) & 0x7f)
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#define IA64_CFM_RRB_FR(x) (((x) >> 25) & 0x7f)
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#define IA64_CFM_RRB_PR(x) (((x) >> 32) & 0x3f)
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/* Concenience function (inline) to adjust backingstore pointers. */
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static __inline uint64_t
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ia64_bsp_adjust(uint64_t bsp, int nslots)
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{
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int bias = ((unsigned int)bsp & 0x1f8) >> 3;
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nslots += (nslots + bias + 63*8) / 63 - 8;
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return bsp + (nslots << 3);
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}
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#ifdef _KERNEL
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extern char sigcode[];
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extern char esigcode[];
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extern int szsigcode;
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extern long Maxmem;
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struct _special;
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struct fpreg;
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struct reg;
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struct thread;
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struct trapframe;
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void busdma_swi(void);
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int copyout_regstack(struct thread *, uint64_t *, uint64_t *);
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void cpu_mp_add(u_int, u_int, u_int);
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int do_ast(struct trapframe *);
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void ia32_trap(int, struct trapframe *);
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int ia64_count_cpus(void);
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int ia64_emulate(struct trapframe *, struct thread *);
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int ia64_flush_dirty(struct thread *, struct _special *);
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uint64_t ia64_get_hcdp(void);
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int ia64_highfp_drop(struct thread *);
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int ia64_highfp_save(struct thread *);
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void ia64_init(void);
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void ia64_probe_sapics(void);
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void interrupt(struct trapframe *);
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void map_gateway_page(void);
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void map_pal_code(void);
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void map_vhpt(uintptr_t);
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void os_boot_rendez(void);
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void os_mca(void);
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int syscall(struct trapframe *);
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void trap(int, struct trapframe *);
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void trap_panic(int, struct trapframe *);
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int unaligned_fixup(struct trapframe *, struct thread *);
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#endif /* _KERNEL */
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#endif /* !_MACHINE_MD_VAR_H_ */
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