From 512b2fb1b5a79fecb7c603303e89e8a4a9c19375 Mon Sep 17 00:00:00 2001 From: Marcel Moolenaar Date: Thu, 24 Aug 2006 21:52:11 +0000 Subject: [PATCH] Add skeletal support for GDB. In particular gdb_cpu_getreg() needs implementing to make GDB support usable. --- sys/conf/files.powerpc | 2 + sys/powerpc/include/gdb_machdep.h | 53 +++++++++++++++++++++++ sys/powerpc/powerpc/gdb_machdep.c | 72 +++++++++++++++++++++++++++++++ 3 files changed, 127 insertions(+) create mode 100644 sys/powerpc/include/gdb_machdep.h create mode 100644 sys/powerpc/powerpc/gdb_machdep.c diff --git a/sys/conf/files.powerpc b/sys/conf/files.powerpc index 5a2b3a15b4c0..609ebdf329c5 100644 --- a/sys/conf/files.powerpc +++ b/sys/conf/files.powerpc @@ -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 diff --git a/sys/powerpc/include/gdb_machdep.h b/sys/powerpc/include/gdb_machdep.h new file mode 100644 index 000000000000..e8c5055fdf5a --- /dev/null +++ b/sys/powerpc/include/gdb_machdep.h @@ -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_ */ diff --git a/sys/powerpc/powerpc/gdb_machdep.c b/sys/powerpc/powerpc/gdb_machdep.c new file mode 100644 index 000000000000..5fbb74427391 --- /dev/null +++ b/sys/powerpc/powerpc/gdb_machdep.c @@ -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 +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include + +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); +}