763107f26c
This basically mirrors what already exists in ddb, but provides a slightly improved interface. It allows the caller to specify the watchpoint access type, and returns more specific error codes to differentiate failure cases. This will be used to support hardware watchpoints in gdb(4). Stubs are provided for architectures lacking hardware watchpoint logic (mips, powerpc, riscv), while other architectures are added individually in follow-up commits. Reviewed by: jhb, kib, markj MFC after: 3 weeks Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D29155
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2004 Marcel Moolenaar
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* from: src/sys/alpha/include/kdb.h,v 1.2 2005/01/05 20:05:50 imp
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_KDB_H_
|
|
#define _MACHINE_KDB_H_
|
|
|
|
#include <machine/frame.h>
|
|
|
|
#define KDB_STOPPEDPCB(pc) &stoppcbs[pc->pc_cpuid]
|
|
|
|
static __inline void
|
|
kdb_cpu_clear_singlestep(void)
|
|
{
|
|
}
|
|
|
|
static __inline void
|
|
kdb_cpu_set_singlestep(void)
|
|
{
|
|
}
|
|
|
|
static __inline void
|
|
kdb_cpu_trap(int vector, int _)
|
|
{
|
|
}
|
|
|
|
static __inline void
|
|
kdb_cpu_sync_icache(unsigned char *addr, size_t size)
|
|
{
|
|
}
|
|
|
|
static __inline int
|
|
kdb_cpu_set_watchpoint(vm_offset_t addr, vm_size_t size, int access)
|
|
{
|
|
|
|
return (ENXIO);
|
|
}
|
|
|
|
static __inline int
|
|
kdb_cpu_clr_watchpoint(vm_offset_t addr, vm_size_t size)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
#endif /* _MACHINE_KDB_H_ */
|