8d8d970db1
we return to kernel or userland. This triggered a panic in a KSE application when TDF_USTATCLOCK was set in the case userland was interrupted, but we never called ast() on our way out. As such, we called ast() at some other time. Unfortunately, TDF_USTATCLOCK handling assumes running in the interrupt thread. This was not the case anymore. To avoid making the same mistake later, interrupt() now returns to its caller whether we interrupted userland or not. This avoids that we have to duplicate the check in assembly, where it's bound to fall off the scope. Now we simply check the return value and call ast() if appropriate. Run into this: davidxu
74 lines
2.4 KiB
C
74 lines
2.4 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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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 fpreg;
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struct reg;
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struct thread;
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struct trapframe;
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struct ia64_fdesc {
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u_int64_t func;
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u_int64_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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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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int ia64_count_cpus(void);
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int ia64_highfp_drop(struct thread *);
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int ia64_highfp_load(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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int interrupt(uint64_t, 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_port_space(void);
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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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#endif /* !_MACHINE_MD_VAR_H_ */
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