freebsd-src/sys/amd64/include/gdb_machdep.h
John Baldwin c632517124 Change GDB_BUFSZ to be large enough to hold a register dump where each
register takes 16 characters (64-bit register in hex).  In practice this
is a slight bit of overkill as 7 of the 56 registers are only 32-bit, but
having the buffer too small results in remote kgdb trashing kernel memory
when it connects.

PR:		amd64/108673
Submitted by:	Ravi Murty, Nikhil Rao @ Intel
MFC after:	3 days
2007-02-05 21:48:32 +00:00

53 lines
1.7 KiB
C

/*-
* 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_GDB_MACHDEP_H_
#define _MACHINE_GDB_MACHDEP_H_
#define GDB_BUFSZ (GDB_NREGS * 16)
#define GDB_NREGS 56
#define GDB_REG_PC 16
static __inline size_t
gdb_cpu_regsz(int regnum)
{
return ((regnum > 16 && regnum < 24) ? 4 : 8);
}
static __inline int
gdb_cpu_query(void)
{
return (0);
}
void *gdb_cpu_getreg(int, size_t *);
void gdb_cpu_setreg(int, void *);
int gdb_cpu_signal(int, int);
#endif /* !_MACHINE_GDB_MACHDEP_H_ */