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f242c47ee2
As with watchpoints allow the kernel debugger to set hardware breakpoints on arm64. These have been tested to work in both the ddb and gdb backends. Reviewed by: jhb (earlier version) Sponsored by: Arm Ltd Sponsored by: Innovate UK Differential Revision: https://reviews.freebsd.org/D44355
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/*-
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* Copyright (c) 2014 Andrew Turner
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under
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* sponsorship from the FreeBSD Foundation.
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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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#ifndef _MACHINE_KDB_H_
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#define _MACHINE_KDB_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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void kdb_cpu_clear_singlestep(void);
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void kdb_cpu_set_singlestep(void);
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int kdb_cpu_set_breakpoint(vm_offset_t addr);
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int kdb_cpu_clr_breakpoint(vm_offset_t addr);
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int kdb_cpu_set_watchpoint(vm_offset_t addr, size_t size, int access);
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int kdb_cpu_clr_watchpoint(vm_offset_t addr, size_t size);
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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(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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