e09369915c
Call cpu_icache_sync_range() rather than sync_all since we know the range and flushing the entire icache is needlessly expensive. Provide a proper armv7 implementation of icache_sync_all rather than using armv7_idcache_wbinv_all, because wbinv_all doesn't broadcast the operation to other cores. In elf_cpu_load_file() use icache_sync_all() and explain why it's needed (and why other sync operations aren't). Remove cpu_idcache_wbinv_all() from kdb_cpu_trap(), it's no longer needed. Explain why wbinv_all is SMP-safe when dumping, and add a missing l2 cache flush. (Either it was missing here, or it isn't needed in the minidump case. Adding it here seems like the safer path to consistancy.)
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*-
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* Copyright (c) 2004 Marcel Moolenaar
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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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_KDB_H_
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#define _MACHINE_KDB_H_
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#include <machine/frame.h>
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#include <machine/psl.h>
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#include <machine/cpufunc.h>
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#define KDB_STOPPEDPCB(pc) &stoppcbs[pc->pc_cpuid]
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static __inline void
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kdb_cpu_clear_singlestep(void)
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{
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}
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static __inline void
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kdb_cpu_set_singlestep(void)
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{
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}
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static __inline void
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kdb_cpu_sync_icache(unsigned char *addr, size_t size)
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{
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cpu_icache_sync_range((vm_offset_t)addr, size);
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}
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static __inline void
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kdb_cpu_trap(int type, int code)
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{
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}
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#endif /* _MACHINE_KDB_H_ */
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