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Add skeletal support for GDB. In particular gdb_cpu_getreg() needs

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implementing to make GDB support usable.
This commit is contained in:
Marcel Moolenaar 2006-08-24 21:52:11 +00:00
parent 9eb5ad2319
commit 512b2fb1b5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=161588
3 changed files with 127 additions and 0 deletions
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2
sys/conf/files.powerpc
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@ -52,6 +52,7 @@ powerpc/powerpc/cpu.c standard
powerpc/powerpc/elf_machdep.c standard
powerpc/powerpc/fpu.c standard
powerpc/powerpc/fuswintr.c standard
powerpc/powerpc/gdb_machdep.c optional gdb
powerpc/powerpc/in_cksum.c optional inet
powerpc/powerpc/interrupt.c standard
powerpc/powerpc/intr_machdep.c standard
@ -121,6 +122,7 @@ powerpc/powermac/macio.c optional powermac pci
powerpc/powermac/openpic_macio.c optional powermac pci
powerpc/powermac/pswitch.c optional powermac pswitch
powerpc/powermac/uninorth.c optional powermac pci
powerpc/powermac/viapmu.c optional powermac
powerpc/psim/iobus.c optional psim
powerpc/psim/ata_iobus.c optional ata psim

53
sys/powerpc/include/gdb_machdep.h Normal file
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@ -0,0 +1,53 @@
/*-
* Copyright (c) 2006 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_NREGS 153
#define GDB_REG_PC 64
#define GDB_BUFSZ (GDB_NREGS*4)
static __inline size_t
gdb_cpu_regsz(int regnum)
{
return (sizeof(int));
}
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_ */

72
sys/powerpc/powerpc/gdb_machdep.c Normal file
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@ -0,0 +1,72 @@
/*-
* Copyright (c) 2006 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 AUTHORS ``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 AUTHORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signal.h>
#include <machine/gdb_machdep.h>
#include <machine/pcb.h>
#include <machine/reg.h>
#include <machine/trap.h>
#include <gdb/gdb.h>
#include <gdb/gdb_int.h>
void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
*regsz = gdb_cpu_regsz(regnum);
switch (regnum) {
}
return (NULL);
}
void
gdb_cpu_setreg(int regnum, void *val)
{
switch (regnum) {
case GDB_REG_PC:
break;
}
}
int
gdb_cpu_signal(int vector, int dummy __unused)
{
if (vector == EXC_TRC || vector == EXC_RUNMODETRC)
return (SIGTRAP);
return (vector);
}