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freebsd-nq/sys/ia64/include/kdb.h

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/* -> /*- for copyright notices, minor format tweaks as necessary
2005-01-06 22:18:23 +00:00
/*-
Introduce the KDB debugger frontend. The frontend provides a framework in which multiple (presumably different) debugger backends can be configured and which provides basic services to those backends. Besides providing services to backends, it also serves as the single point of contact for any and all code that wants to make use of the debugger functions, such as entering the debugger or handling of the alternate break sequence. For this purpose, the frontend has been made non-optional. All debugger requests are forwarded or handed over to the current backend, if applicable. Selection of the current backend is done by the debug.kdb.current sysctl. A list of configured backends can be obtained with the debug.kdb.available sysctl. One can enter the debugger by writing to the debug.kdb.enter sysctl.
2004-07-10 18:40:12 +00:00
* 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_KDB_H_
#define _MACHINE_KDB_H_
#include <machine/cpufunc.h>
#include <machine/frame.h>
#include <machine/ia64_cpu.h>
Define struct pcpu_md as the only MD field of struct pcpu (pc_acpi_id excluded, as it's used by MI code) and mode the sysctl variables from pcpu_stats to pcpu_md. Adjust all references accordingly. While nearby, change the PCPU sysctl tree so that they match the CPU device sysctl tree -- they are now children of a static node called "machdep.cpu" and are named only with their cpu ID.
2009-12-07 06:41:27 +00:00
#define KDB_STOPPEDPCB(pc) (&(pc)->pc_md.pcb)
Eliminate HAVE_STOPPEDPCBS. On ia64 the PCPU holds a pointer to the PCB in which the context of stopped CPUs is stored. To access this PCB from KDB, we introduce a new define, called KDB_STOPPEDPCB. The definition, when present, lives in <machine/kdb.h> and abstracts where MD code saves the context. Define KDB_STOPPEDPCB on i386, amd64, alpha and sparc64 in accordance to previous code.
2006-04-03 22:51:47 +00:00
Introduce the KDB debugger frontend. The frontend provides a framework in which multiple (presumably different) debugger backends can be configured and which provides basic services to those backends. Besides providing services to backends, it also serves as the single point of contact for any and all code that wants to make use of the debugger functions, such as entering the debugger or handling of the alternate break sequence. For this purpose, the frontend has been made non-optional. All debugger requests are forwarded or handed over to the current backend, if applicable. Selection of the current backend is done by the debug.kdb.current sysctl. A list of configured backends can be obtained with the debug.kdb.available sysctl. One can enter the debugger by writing to the debug.kdb.enter sysctl.
2004-07-10 18:40:12 +00:00
static __inline void
kdb_cpu_clear_singlestep(void)
{
kdb_frame->tf_special.psr &= ~IA64_PSR_SS;
}
static __inline void
kdb_cpu_set_singlestep(void)
{
kdb_frame->tf_special.psr |= IA64_PSR_SS;
}
Add kdb_cpu_sync_icache(), intended to synchronize instruction caches with data caches after writing to memory. This typically is required to make breakpoints work on ia64 and powerpc. For those architectures the function is implemented.
2007-06-09 21:55:17 +00:00
static __inline void
kdb_cpu_sync_icache(unsigned char *addr, size_t size)
{
vm_offset_t cacheline;
cacheline = (uintptr_t)addr & ~31;
size += (uintptr_t)addr - cacheline;
size = (size + 31) & ~31;
while (size > 0) {
__asm __volatile("fc %0;; sync.i;; srlz.i;;" :: "r"(cacheline));
cacheline += 32;
size -= 32;
}
}
Introduce the KDB debugger frontend. The frontend provides a framework in which multiple (presumably different) debugger backends can be configured and which provides basic services to those backends. Besides providing services to backends, it also serves as the single point of contact for any and all code that wants to make use of the debugger functions, such as entering the debugger or handling of the alternate break sequence. For this purpose, the frontend has been made non-optional. All debugger requests are forwarded or handed over to the current backend, if applicable. Selection of the current backend is done by the debug.kdb.current sysctl. A list of configured backends can be obtained with the debug.kdb.available sysctl. One can enter the debugger by writing to the debug.kdb.enter sysctl.
2004-07-10 18:40:12 +00:00
static __inline void
kdb_cpu_trap(int vector, int _)
{
__asm __volatile("flushrs;;");
if (vector == IA64_VEC_BREAK &&
kdb_frame->tf_special.ifa == IA64_FIXED_BREAK)
kdb_frame->tf_special.psr += IA64_PSR_RI_1;
}
#endif /* _MACHINE_KDB_H_ */
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