svn commit: r207777 - in stable/7/gnu/usr.bin/gdb: . gdbserver
Warner Losh
imp at FreeBSD.org
Sat May 8 13:23:57 UTC 2010
Author: imp
Date: Sat May 8 13:23:57 2010
New Revision: 207777
URL: http://svn.freebsd.org/changeset/base/207777
Log:
MFC 185023 (by raj):
Initial gdbserver support for ARM.
Obtained from: Juniper Networks, Semihalf
Added:
stable/7/gnu/usr.bin/gdb/gdbserver/fbsd-arm-low.c
- copied unchanged from r185023, head/gnu/usr.bin/gdb/gdbserver/fbsd-arm-low.c
stable/7/gnu/usr.bin/gdb/gdbserver/reg-arm.c
- copied unchanged from r185023, head/gnu/usr.bin/gdb/gdbserver/reg-arm.c
Modified:
stable/7/gnu/usr.bin/gdb/Makefile
stable/7/gnu/usr.bin/gdb/gdbserver/Makefile
Directory Properties:
stable/7/gnu/usr.bin/gdb/ (props changed)
stable/7/gnu/usr.bin/gdb/kgdb/ (props changed)
Modified: stable/7/gnu/usr.bin/gdb/Makefile
==============================================================================
--- stable/7/gnu/usr.bin/gdb/Makefile Sat May 8 13:21:22 2010 (r207776)
+++ stable/7/gnu/usr.bin/gdb/Makefile Sat May 8 13:23:57 2010 (r207777)
@@ -2,7 +2,7 @@
SUBDIR= doc libgdb gdb gdbtui kgdb
-.if ${MACHINE_ARCH} == "i386"
+.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "arm"
SUBDIR+=gdbserver
.endif
Modified: stable/7/gnu/usr.bin/gdb/gdbserver/Makefile
==============================================================================
--- stable/7/gnu/usr.bin/gdb/gdbserver/Makefile Sat May 8 13:21:22 2010 (r207776)
+++ stable/7/gnu/usr.bin/gdb/gdbserver/Makefile Sat May 8 13:23:57 2010 (r207777)
@@ -10,9 +10,17 @@ GDBDIR= ${.CURDIR}/../../../../contrib/g
PROG= gdbserver
-SRCS= i387-fp.c inferiors.c mem-break.c regcache.c remote-utils.c \
- server.c signals.c target.c reg-i386.c utils.c
-SRCS+= fbsd-low.c fbsd-i386-low.c
+SRCS= inferiors.c mem-break.c regcache.c remote-utils.c \
+ server.c signals.c target.c utils.c
+SRCS+= fbsd-low.c
+
+.if ${MACHINE_ARCH} == "i386"
+SRCS+= fbsd-i386-low.c i387-fp.c reg-i386.c
+.endif
+
+.if ${MACHINE_ARCH} == "arm"
+SRCS+= fbsd-arm-low.c reg-arm.c
+.endif
#CFLAGS+= -I${.CURDIR}/../arch/${MACHINE_ARCH}
CFLAGS+= -I${GDBDIR}/gdb/gdbserver
Copied: stable/7/gnu/usr.bin/gdb/gdbserver/fbsd-arm-low.c (from r185023, head/gnu/usr.bin/gdb/gdbserver/fbsd-arm-low.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/7/gnu/usr.bin/gdb/gdbserver/fbsd-arm-low.c Sat May 8 13:23:57 2010 (r207777, copy of r185023, head/gnu/usr.bin/gdb/gdbserver/fbsd-arm-low.c)
@@ -0,0 +1,146 @@
+/* FreeBSD/ARM specific low level interface, for the remote server for GDB.
+ Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+ Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "server.h"
+#include "fbsd-low.h"
+
+#ifdef HAVE_SYS_REG_H
+#include <sys/reg.h>
+#endif
+
+#include <sys/procfs.h>
+#include <sys/ptrace.h>
+
+#define arm_num_regs 26
+
+static int arm_regmap[] = {
+ 0, 4, 8, 12, 16, 20, 24, 28,
+ 32, 36, 40, 44, 48, 52, 56, 60,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 64
+};
+
+static int
+arm_cannot_store_register (int regno)
+{
+ return (regno >= arm_num_regs);
+}
+
+static int
+arm_cannot_fetch_register (int regno)
+{
+ return (regno >= arm_num_regs);
+}
+
+extern int debug_threads;
+
+static CORE_ADDR
+arm_get_pc ()
+{
+ unsigned long pc;
+ collect_register_by_name ("pc", &pc);
+ if (debug_threads)
+ fprintf (stderr, "stop pc is %08lx\n", pc);
+ return pc;
+}
+
+static void
+arm_set_pc (CORE_ADDR pc)
+{
+ unsigned long newpc = pc;
+ supply_register_by_name ("pc", &newpc);
+}
+
+/* Correct in either endianness. We do not support Thumb yet. */
+static const unsigned long arm_breakpoint = 0xef9f0001;
+#define arm_breakpoint_len 4
+
+static int
+arm_breakpoint_at (CORE_ADDR where)
+{
+ unsigned long insn;
+
+ (*the_target->read_memory) (where, (char *) &insn, 4);
+ if (insn == arm_breakpoint)
+ return 1;
+
+ /* If necessary, recognize more trap instructions here. GDB only uses the
+ one. */
+ return 0;
+}
+
+/* We only place breakpoints in empty marker functions, and thread locking
+ is outside of the function. So rather than importing software single-step,
+ we can just run until exit. */
+static CORE_ADDR
+arm_reinsert_addr ()
+{
+ unsigned long pc;
+ collect_register_by_name ("lr", &pc);
+ return pc;
+}
+
+static void
+arm_fill_gregset (void *buf)
+{
+ int i;
+
+ for (i = 0; i < arm_num_regs; i++)
+ if (arm_regmap[i] != -1)
+ collect_register (i, ((char *) buf) + arm_regmap[i]);
+
+}
+
+static void
+arm_store_gregset (const void *buf)
+{
+ int i;
+
+ for (i = 0; i < arm_num_regs; i++)
+ if (arm_regmap[i] != -1)
+ supply_register (i, ((char *) buf) + arm_regmap[i]);
+
+}
+
+
+struct regset_info target_regsets[] = {
+ {PT_GETREGS, PT_SETREGS, sizeof (struct reg),
+ GENERAL_REGS,
+ arm_fill_gregset, arm_store_gregset },
+ { 0, 0, -1, -1, NULL, NULL }
+};
+
+struct fbsd_target_ops the_low_target = {
+ arm_num_regs,
+ arm_regmap,
+ arm_cannot_fetch_register,
+ arm_cannot_store_register,
+ arm_get_pc,
+ arm_set_pc,
+ (const char *) &arm_breakpoint,
+ arm_breakpoint_len,
+ arm_reinsert_addr,
+ 0,
+ arm_breakpoint_at,
+};
Copied: stable/7/gnu/usr.bin/gdb/gdbserver/reg-arm.c (from r185023, head/gnu/usr.bin/gdb/gdbserver/reg-arm.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/7/gnu/usr.bin/gdb/gdbserver/reg-arm.c Sat May 8 13:23:57 2010 (r207777, copy of r185023, head/gnu/usr.bin/gdb/gdbserver/reg-arm.c)
@@ -0,0 +1,68 @@
+/* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
+
+/* A register protocol for GDB, the GNU debugger.
+ Copyright 2001, 2002 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* This file was created with the aid of ``regdat.sh'' and ``reg-arm.dat''. */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "regdef.h"
+#include "regcache.h"
+
+struct reg regs_arm[] = {
+ { "r0", 0, 32 },
+ { "r1", 32, 32 },
+ { "r2", 64, 32 },
+ { "r3", 96, 32 },
+ { "r4", 128, 32 },
+ { "r5", 160, 32 },
+ { "r6", 192, 32 },
+ { "r7", 224, 32 },
+ { "r8", 256, 32 },
+ { "r9", 288, 32 },
+ { "r10", 320, 32 },
+ { "r11", 352, 32 },
+ { "r12", 384, 32 },
+ { "sp", 416, 32 },
+ { "lr", 448, 32 },
+ { "pc", 480, 32 },
+ { "f0", 512, 96 },
+ { "f1", 608, 96 },
+ { "f2", 704, 96 },
+ { "f3", 800, 96 },
+ { "f4", 896, 96 },
+ { "f5", 992, 96 },
+ { "f6", 1088, 96 },
+ { "f7", 1184, 96 },
+ { "fps", 1280, 32 },
+ { "cpsr", 1312, 32 },
+};
+
+const char *expedite_regs_arm[] = { "r11", "sp", "pc", 0 };
+
+void
+init_registers ()
+{
+ set_register_cache (regs_arm,
+ sizeof (regs_arm) / sizeof (regs_arm[0]));
+ gdbserver_expedite_regs = expedite_regs_arm;
+}
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