Initial gdbserver support for PowerPC.
Obtained from: Juniper Networks, Semihalf
This commit is contained in:
Rafal Jaworowski
parent
4824be888b
commit
ab8b490a63
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=188941
@ -1674,7 +1674,7 @@ OLD_FILES+=usr/lib/libpam_ssh.a
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OLD_FILES+=usr/lib/libpam_ssh_p.a
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OLD_FILES+=usr/bin/help
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OLD_FILES+=usr/bin/sccs
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.if ${TARGET_ARCH} != "arm" && ${TARGET_ARCH} != "i386"
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.if ${TARGET_ARCH} != "arm" && ${TARGET_ARCH} != "i386" && ${TARGET_ARCH} != "powerpc"
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OLD_FILES+=usr/bin/gdbserver
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.endif
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OLD_FILES+=usr/bin/ssh-keysign
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@ -2,7 +2,7 @@
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SUBDIR= doc libgdb gdb gdbtui kgdb
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.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "arm"
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.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "arm" || ${MACHINE_ARCH} == "powerpc"
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SUBDIR+=gdbserver
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.endif
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@ -22,6 +22,10 @@ SRCS+= fbsd-i386-low.c i387-fp.c reg-i386.c
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SRCS+= fbsd-arm-low.c reg-arm.c
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.endif
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.if ${MACHINE_ARCH} == "powerpc"
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SRCS+= fbsd-ppc-low.c reg-ppc.c
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.endif
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#CFLAGS+= -I${.CURDIR}/../arch/${MACHINE_ARCH}
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CFLAGS+= -I${GDBDIR}/gdb/gdbserver
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CFLAGS+= -I${GDBDIR}/gdb/regformats
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156
gnu/usr.bin/gdb/gdbserver/fbsd-ppc-low.c
Normal file
156
gnu/usr.bin/gdb/gdbserver/fbsd-ppc-low.c
Normal file
@ -0,0 +1,156 @@
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/* FreeBSD/PowerPC specific low level interface, for the remote server for
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GDB.
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Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "server.h"
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#include "fbsd-low.h"
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#include <sys/procfs.h>
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#include <sys/ptrace.h>
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#define ppc_num_regs 71
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/* Currently, don't check/send MQ. */
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static int ppc_regmap[] =
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{ 0, 4, 8, 12, 16, 20, 24, 28,
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32, 36, 40, 44, 48, 52, 56, 60,
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64, 68, 72, 76, 80, 84, 88, 92,
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96, 100, 104, 108, 112, 116, 120, 124,
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#if 0
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/*
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* XXX on FreeBSD the gdbserver for PowerPC was only tested with FPU-less
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* cores i.e. e500. Let's leave the original FPR references around in case
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* someone picks up and brings support for AIM-like FPU machines.
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*/
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PT_FPR0*4, PT_FPR0*4 + 8, PT_FPR0*4+16, PT_FPR0*4+24,
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PT_FPR0*4+32, PT_FPR0*4+40, PT_FPR0*4+48, PT_FPR0*4+56,
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PT_FPR0*4+64, PT_FPR0*4+72, PT_FPR0*4+80, PT_FPR0*4+88,
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PT_FPR0*4+96, PT_FPR0*4+104, PT_FPR0*4+112, PT_FPR0*4+120,
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PT_FPR0*4+128, PT_FPR0*4+136, PT_FPR0*4+144, PT_FPR0*4+152,
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PT_FPR0*4+160, PT_FPR0*4+168, PT_FPR0*4+176, PT_FPR0*4+184,
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PT_FPR0*4+192, PT_FPR0*4+200, PT_FPR0*4+208, PT_FPR0*4+216,
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PT_FPR0*4+224, PT_FPR0*4+232, PT_FPR0*4+240, PT_FPR0*4+248,
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#endif
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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144, -1, 132, 128, 140, 136, -1
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};
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static int
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ppc_cannot_store_register (int regno)
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{
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/* Some kernels do not allow us to store fpscr. */
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if (regno == find_regno ("fpscr"))
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return 2;
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return 0;
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}
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static int
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ppc_cannot_fetch_register (int regno)
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{
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return 0;
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}
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static CORE_ADDR
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ppc_get_pc (void)
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{
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unsigned long pc;
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collect_register_by_name ("pc", &pc);
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return (CORE_ADDR) pc;
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}
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static void
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ppc_set_pc (CORE_ADDR pc)
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{
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unsigned long newpc = pc;
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supply_register_by_name ("pc", &newpc);
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}
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/* Correct in either endianness. Note that this file is
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for PowerPC only, not PowerPC64.
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This instruction is "twge r2, r2", which GDB uses as a software
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breakpoint. */
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static const unsigned long ppc_breakpoint = 0x7d821008;
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#define ppc_breakpoint_len 4
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static int
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ppc_breakpoint_at (CORE_ADDR where)
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{
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unsigned long insn;
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(*the_target->read_memory) (where, (char *) &insn, 4);
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if (insn == ppc_breakpoint)
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return 1;
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/* If necessary, recognize more trap instructions here. GDB only uses the
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one. */
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return 0;
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}
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static void
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ppc_fill_gregset (void *buf)
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{
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int i;
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for (i = 0; i < ppc_num_regs; i++)
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if (ppc_regmap[i] != -1)
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collect_register (i, ((char *) buf) + ppc_regmap[i]);
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}
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static void
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ppc_store_gregset (const void *buf)
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{
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int i;
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for (i = 0; i < ppc_num_regs; i++)
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if (ppc_regmap[i] != -1)
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supply_register (i, ((char *) buf) + ppc_regmap[i]);
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}
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struct regset_info target_regsets[] = {
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{ PT_GETREGS, PT_SETREGS, sizeof (struct reg),
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GENERAL_REGS,
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ppc_fill_gregset, ppc_store_gregset },
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{ 0, 0, -1, -1, NULL, NULL }
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};
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struct fbsd_target_ops the_low_target = {
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ppc_num_regs,
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ppc_regmap,
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ppc_cannot_fetch_register,
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ppc_cannot_store_register,
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ppc_get_pc,
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ppc_set_pc,
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(const char *) &ppc_breakpoint,
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ppc_breakpoint_len,
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NULL,
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0,
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ppc_breakpoint_at,
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};
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113
gnu/usr.bin/gdb/gdbserver/reg-ppc.c
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113
gnu/usr.bin/gdb/gdbserver/reg-ppc.c
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@ -0,0 +1,113 @@
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/* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
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/* A register protocol for GDB, the GNU debugger.
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Copyright 2001, 2002 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This file was created with the aid of ``regdat.sh'' and ``../../../../contrib/gdb/gdb/regformats/reg-ppc.dat''. */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "regdef.h"
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#include "regcache.h"
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struct reg regs_ppc[] = {
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{ "r0", 0, 32 },
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{ "r1", 32, 32 },
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{ "r2", 64, 32 },
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{ "r3", 96, 32 },
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{ "r4", 128, 32 },
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{ "r5", 160, 32 },
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{ "r6", 192, 32 },
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{ "r7", 224, 32 },
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{ "r8", 256, 32 },
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{ "r9", 288, 32 },
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{ "r10", 320, 32 },
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{ "r11", 352, 32 },
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{ "r12", 384, 32 },
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{ "r13", 416, 32 },
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{ "r14", 448, 32 },
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{ "r15", 480, 32 },
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{ "r16", 512, 32 },
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{ "r17", 544, 32 },
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{ "r18", 576, 32 },
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{ "r19", 608, 32 },
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{ "r20", 640, 32 },
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{ "r21", 672, 32 },
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{ "r22", 704, 32 },
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{ "r23", 736, 32 },
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{ "r24", 768, 32 },
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{ "r25", 800, 32 },
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{ "r26", 832, 32 },
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{ "r27", 864, 32 },
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{ "r28", 896, 32 },
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{ "r29", 928, 32 },
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{ "r30", 960, 32 },
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{ "r31", 992, 32 },
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{ "f0", 1024, 64 },
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{ "f1", 1088, 64 },
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{ "f2", 1152, 64 },
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{ "f3", 1216, 64 },
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{ "f4", 1280, 64 },
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{ "f5", 1344, 64 },
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{ "f6", 1408, 64 },
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{ "f7", 1472, 64 },
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{ "f8", 1536, 64 },
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{ "f9", 1600, 64 },
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{ "f10", 1664, 64 },
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{ "f11", 1728, 64 },
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{ "f12", 1792, 64 },
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{ "f13", 1856, 64 },
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{ "f14", 1920, 64 },
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{ "f15", 1984, 64 },
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{ "f16", 2048, 64 },
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{ "f17", 2112, 64 },
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{ "f18", 2176, 64 },
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{ "f19", 2240, 64 },
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{ "f20", 2304, 64 },
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{ "f21", 2368, 64 },
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{ "f22", 2432, 64 },
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{ "f23", 2496, 64 },
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{ "f24", 2560, 64 },
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{ "f25", 2624, 64 },
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{ "f26", 2688, 64 },
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{ "f27", 2752, 64 },
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{ "f28", 2816, 64 },
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{ "f29", 2880, 64 },
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{ "f30", 2944, 64 },
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{ "f31", 3008, 64 },
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{ "pc", 3072, 32 },
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{ "ps", 3104, 32 },
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{ "cr", 3136, 32 },
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{ "lr", 3168, 32 },
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{ "ctr", 3200, 32 },
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{ "xer", 3232, 32 },
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{ "fpscr", 3264, 32 },
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};
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const char *expedite_regs_ppc[] = { "r1", "pc", 0 };
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void
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init_registers ()
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{
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set_register_cache (regs_ppc,
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sizeof (regs_ppc) / sizeof (regs_ppc[0]));
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gdbserver_expedite_regs = expedite_regs_ppc;
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}
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