/* nto-tdep.c - general QNX Neutrino target functionality.
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/* nto-tdep.c - general QNX Neutrino target functionality.
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Copyright (C) 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
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Copyright (C) 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
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Contributed by QNX Software Systems Ltd.
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Contributed by QNX Software Systems Ltd.
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This file is part of GDB.
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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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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "gdb_stat.h"
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#include "gdb_stat.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "nto-tdep.h"
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#include "nto-tdep.h"
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#include "top.h"
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#include "top.h"
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#include "cli/cli-decode.h"
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#include "cli/cli-decode.h"
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#include "cli/cli-cmds.h"
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#include "cli/cli-cmds.h"
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#include "inferior.h"
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#include "inferior.h"
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#include "gdbarch.h"
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#include "gdbarch.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "elf-bfd.h"
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#include "elf-bfd.h"
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#include "solib-svr4.h"
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#include "solib-svr4.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "objfiles.h"
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#include "objfiles.h"
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#include <string.h>
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#include <string.h>
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#ifdef __CYGWIN__
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#ifdef __CYGWIN__
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#include <sys/cygwin.h>
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#include <sys/cygwin.h>
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#endif
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#endif
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#ifdef __CYGWIN__
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#ifdef __CYGWIN__
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static char default_nto_target[] = "C:\\QNXsdk\\target\\qnx6";
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static char default_nto_target[] = "C:\\QNXsdk\\target\\qnx6";
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#elif defined(__sun__) || defined(linux)
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#elif defined(__sun__) || defined(linux)
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static char default_nto_target[] = "/opt/QNXsdk/target/qnx6";
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static char default_nto_target[] = "/opt/QNXsdk/target/qnx6";
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#else
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#else
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static char default_nto_target[] = "";
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static char default_nto_target[] = "";
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#endif
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#endif
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struct nto_target_ops current_nto_target;
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struct nto_target_ops current_nto_target;
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static char *
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static char *
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nto_target (void)
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nto_target (void)
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{
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{
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char *p = getenv ("QNX_TARGET");
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char *p = getenv ("QNX_TARGET");
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#ifdef __CYGWIN__
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#ifdef __CYGWIN__
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static char buf[PATH_MAX];
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static char buf[PATH_MAX];
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if (p)
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if (p)
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cygwin_conv_to_posix_path (p, buf);
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cygwin_conv_to_posix_path (p, buf);
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else
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else
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cygwin_conv_to_posix_path (default_nto_target, buf);
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cygwin_conv_to_posix_path (default_nto_target, buf);
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return buf;
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return buf;
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#else
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#else
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return p ? p : default_nto_target;
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return p ? p : default_nto_target;
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#endif
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#endif
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}
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}
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void
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void
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nto_set_target (struct nto_target_ops *targ)
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nto_set_target (struct nto_target_ops *targ)
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{
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{
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nto_regset_id = targ->regset_id;
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nto_regset_id = targ->regset_id;
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nto_supply_gregset = targ->supply_gregset;
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nto_supply_gregset = targ->supply_gregset;
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nto_supply_fpregset = targ->supply_fpregset;
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nto_supply_fpregset = targ->supply_fpregset;
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nto_supply_altregset = targ->supply_altregset;
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nto_supply_altregset = targ->supply_altregset;
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nto_supply_regset = targ->supply_regset;
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nto_supply_regset = targ->supply_regset;
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nto_register_area = targ->register_area;
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nto_register_area = targ->register_area;
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nto_regset_fill = targ->regset_fill;
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nto_regset_fill = targ->regset_fill;
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nto_fetch_link_map_offsets = targ->fetch_link_map_offsets;
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nto_fetch_link_map_offsets = targ->fetch_link_map_offsets;
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}
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}
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/* Take a string such as i386, rs6000, etc. and map it onto CPUTYPE_X86,
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/* Take a string such as i386, rs6000, etc. and map it onto CPUTYPE_X86,
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CPUTYPE_PPC, etc. as defined in nto-share/dsmsgs.h. */
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CPUTYPE_PPC, etc. as defined in nto-share/dsmsgs.h. */
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int
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int
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nto_map_arch_to_cputype (const char *arch)
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nto_map_arch_to_cputype (const char *arch)
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{
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{
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if (!strcmp (arch, "i386") || !strcmp (arch, "x86"))
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if (!strcmp (arch, "i386") || !strcmp (arch, "x86"))
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return CPUTYPE_X86;
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return CPUTYPE_X86;
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if (!strcmp (arch, "rs6000") || !strcmp (arch, "powerpc"))
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if (!strcmp (arch, "rs6000") || !strcmp (arch, "powerpc"))
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return CPUTYPE_PPC;
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return CPUTYPE_PPC;
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if (!strcmp (arch, "mips"))
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if (!strcmp (arch, "mips"))
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return CPUTYPE_MIPS;
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return CPUTYPE_MIPS;
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if (!strcmp (arch, "arm"))
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if (!strcmp (arch, "arm"))
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return CPUTYPE_ARM;
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return CPUTYPE_ARM;
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if (!strcmp (arch, "sh"))
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if (!strcmp (arch, "sh"))
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return CPUTYPE_SH;
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return CPUTYPE_SH;
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return CPUTYPE_UNKNOWN;
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return CPUTYPE_UNKNOWN;
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}
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}
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int
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int
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nto_find_and_open_solib (char *solib, unsigned o_flags, char **temp_pathname)
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nto_find_and_open_solib (char *solib, unsigned o_flags, char **temp_pathname)
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{
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{
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char *buf, *arch_path, *nto_root, *endian, *base;
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char *buf, *arch_path, *nto_root, *endian, *base;
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const char *arch;
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const char *arch;
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int ret;
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int ret;
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#define PATH_FMT "%s/lib:%s/usr/lib:%s/usr/photon/lib:%s/usr/photon/dll:%s/lib/dll"
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#define PATH_FMT "%s/lib:%s/usr/lib:%s/usr/photon/lib:%s/usr/photon/dll:%s/lib/dll"
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nto_root = nto_target ();
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nto_root = nto_target ();
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if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name, "i386") == 0)
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if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name, "i386") == 0)
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{
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{
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arch = "x86";
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arch = "x86";
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endian = "";
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endian = "";
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}
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}
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else if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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else if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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"rs6000") == 0
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"rs6000") == 0
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|| strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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|| strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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"powerpc") == 0)
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"powerpc") == 0)
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{
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{
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arch = "ppc";
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arch = "ppc";
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endian = "be";
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endian = "be";
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}
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}
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else
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else
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{
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{
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arch = gdbarch_bfd_arch_info (current_gdbarch)->arch_name;
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arch = gdbarch_bfd_arch_info (current_gdbarch)->arch_name;
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endian = gdbarch_byte_order (current_gdbarch)
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endian = gdbarch_byte_order (current_gdbarch)
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== BFD_ENDIAN_BIG ? "be" : "le";
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== BFD_ENDIAN_BIG ? "be" : "le";
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}
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}
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/* In case nto_root is short, add strlen(solib)
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/* In case nto_root is short, add strlen(solib)
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so we can reuse arch_path below. */
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so we can reuse arch_path below. */
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arch_path =
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arch_path =
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alloca (strlen (nto_root) + strlen (arch) + strlen (endian) + 2 +
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alloca (strlen (nto_root) + strlen (arch) + strlen (endian) + 2 +
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strlen (solib));
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strlen (solib));
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sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
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sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
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buf = alloca (strlen (PATH_FMT) + strlen (arch_path) * 5 + 1);
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buf = alloca (strlen (PATH_FMT) + strlen (arch_path) * 5 + 1);
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sprintf (buf, PATH_FMT, arch_path, arch_path, arch_path, arch_path,
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sprintf (buf, PATH_FMT, arch_path, arch_path, arch_path, arch_path,
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arch_path);
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arch_path);
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/* Don't assume basename() isn't destructive. */
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/* Don't assume basename() isn't destructive. */
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base = strrchr (solib, '/');
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base = strrchr (solib, '/');
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if (!base)
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if (!base)
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base = solib;
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base = solib;
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else
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else
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base++; /* Skip over '/'. */
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base++; /* Skip over '/'. */
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ret = openp (buf, 1, base, o_flags, 0, temp_pathname);
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ret = openp (buf, 1, base, o_flags, 0, temp_pathname);
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if (ret < 0 && base != solib)
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if (ret < 0 && base != solib)
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{
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{
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sprintf (arch_path, "/%s", solib);
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sprintf (arch_path, "/%s", solib);
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ret = open (arch_path, o_flags, 0);
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ret = open (arch_path, o_flags, 0);
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if (temp_pathname)
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if (temp_pathname)
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{
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{
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if (ret >= 0)
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if (ret >= 0)
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*temp_pathname = gdb_realpath (arch_path);
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*temp_pathname = gdb_realpath (arch_path);
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else
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else
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**temp_pathname = '\0';
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**temp_pathname = '\0';
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}
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}
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}
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}
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return ret;
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return ret;
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}
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}
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void
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void
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nto_init_solib_absolute_prefix (void)
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nto_init_solib_absolute_prefix (void)
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{
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{
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char buf[PATH_MAX * 2], arch_path[PATH_MAX];
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char buf[PATH_MAX * 2], arch_path[PATH_MAX];
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char *nto_root, *endian;
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char *nto_root, *endian;
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const char *arch;
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const char *arch;
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nto_root = nto_target ();
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nto_root = nto_target ();
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if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name, "i386") == 0)
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if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name, "i386") == 0)
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{
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{
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arch = "x86";
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arch = "x86";
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endian = "";
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endian = "";
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}
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}
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else if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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else if (strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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"rs6000") == 0
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"rs6000") == 0
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|| strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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|| strcmp (gdbarch_bfd_arch_info (current_gdbarch)->arch_name,
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"powerpc") == 0)
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"powerpc") == 0)
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{
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{
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arch = "ppc";
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arch = "ppc";
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endian = "be";
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endian = "be";
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}
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}
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else
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else
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{
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{
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arch = gdbarch_bfd_arch_info (current_gdbarch)->arch_name;
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arch = gdbarch_bfd_arch_info (current_gdbarch)->arch_name;
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endian = gdbarch_byte_order (current_gdbarch)
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endian = gdbarch_byte_order (current_gdbarch)
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== BFD_ENDIAN_BIG ? "be" : "le";
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== BFD_ENDIAN_BIG ? "be" : "le";
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}
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}
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sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
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sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
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sprintf (buf, "set solib-absolute-prefix %s", arch_path);
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sprintf (buf, "set solib-absolute-prefix %s", arch_path);
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execute_command (buf, 0);
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execute_command (buf, 0);
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}
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}
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char **
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char **
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nto_parse_redirection (char *pargv[], char **pin, char **pout, char **perr)
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nto_parse_redirection (char *pargv[], char **pin, char **pout, char **perr)
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{
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{
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char **argv;
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char **argv;
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char *in, *out, *err, *p;
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char *in, *out, *err, *p;
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int argc, i, n;
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int argc, i, n;
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for (n = 0; pargv[n]; n++);
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for (n = 0; pargv[n]; n++);
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if (n == 0)
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if (n == 0)
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return NULL;
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return NULL;
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in = "";
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in = "";
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out = "";
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out = "";
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err = "";
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err = "";
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argv = xcalloc (n + 1, sizeof argv[0]);
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argv = xcalloc (n + 1, sizeof argv[0]);
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argc = n;
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argc = n;
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for (i = 0, n = 0; n < argc; n++)
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for (i = 0, n = 0; n < argc; n++)
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{
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{
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p = pargv[n];
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p = pargv[n];
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if (*p == '>')
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if (*p == '>')
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{
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{
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p++;
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p++;
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if (*p)
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if (*p)
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out = p;
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out = p;
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else
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else
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out = pargv[++n];
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out = pargv[++n];
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}
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}
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else if (*p == '<')
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else if (*p == '<')
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{
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{
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p++;
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p++;
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if (*p)
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if (*p)
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in = p;
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in = p;
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else
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else
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in = pargv[++n];
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in = pargv[++n];
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}
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}
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else if (*p++ == '2' && *p++ == '>')
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else if (*p++ == '2' && *p++ == '>')
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{
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{
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if (*p == '&' && *(p + 1) == '1')
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if (*p == '&' && *(p + 1) == '1')
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err = out;
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err = out;
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else if (*p)
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else if (*p)
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err = p;
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err = p;
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else
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else
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err = pargv[++n];
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err = pargv[++n];
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}
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}
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else
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else
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argv[i++] = pargv[n];
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argv[i++] = pargv[n];
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}
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}
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*pin = in;
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*pin = in;
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*pout = out;
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*pout = out;
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*perr = err;
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*perr = err;
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return argv;
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return argv;
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}
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}
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/* The struct lm_info, LM_ADDR, and nto_truncate_ptr are copied from
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/* The struct lm_info, LM_ADDR, and nto_truncate_ptr are copied from
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solib-svr4.c to support nto_relocate_section_addresses
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solib-svr4.c to support nto_relocate_section_addresses
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which is different from the svr4 version. */
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which is different from the svr4 version. */
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struct lm_info
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struct lm_info
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{
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{
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/* Pointer to copy of link map from inferior. The type is char *
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/* Pointer to copy of link map from inferior. The type is char *
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rather than void *, so that we may use byte offsets to find the
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rather than void *, so that we may use byte offsets to find the
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various fields without the need for a cast. */
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various fields without the need for a cast. */
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char *lm;
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char *lm;
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};
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};
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static CORE_ADDR
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static CORE_ADDR
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LM_ADDR (struct so_list *so)
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LM_ADDR (struct so_list *so)
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{
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{
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struct link_map_offsets *lmo = nto_fetch_link_map_offsets ();
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struct link_map_offsets *lmo = nto_fetch_link_map_offsets ();
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return extract_typed_address (so->lm_info->lm + lmo->l_addr_offset,
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return extract_typed_address (so->lm_info->lm + lmo->l_addr_offset,
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builtin_type_void_data_ptr);
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builtin_type_void_data_ptr);
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}
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}
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static CORE_ADDR
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static CORE_ADDR
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nto_truncate_ptr (CORE_ADDR addr)
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nto_truncate_ptr (CORE_ADDR addr)
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{
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{
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if (gdbarch_ptr_bit (current_gdbarch) == sizeof (CORE_ADDR) * 8)
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if (gdbarch_ptr_bit (current_gdbarch) == sizeof (CORE_ADDR) * 8)
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/* We don't need to truncate anything, and the bit twiddling below
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/* We don't need to truncate anything, and the bit twiddling below
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will fail due to overflow problems. */
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will fail due to overflow problems. */
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return addr;
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return addr;
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else
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else
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return addr & (((CORE_ADDR) 1 << gdbarch_ptr_bit (current_gdbarch)) - 1);
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return addr & (((CORE_ADDR) 1 << gdbarch_ptr_bit (current_gdbarch)) - 1);
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}
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}
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Elf_Internal_Phdr *
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Elf_Internal_Phdr *
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find_load_phdr (bfd *abfd)
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find_load_phdr (bfd *abfd)
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{
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{
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Elf_Internal_Phdr *phdr;
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Elf_Internal_Phdr *phdr;
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unsigned int i;
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unsigned int i;
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if (!elf_tdata (abfd))
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if (!elf_tdata (abfd))
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return NULL;
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return NULL;
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phdr = elf_tdata (abfd)->phdr;
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phdr = elf_tdata (abfd)->phdr;
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for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
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for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
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{
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{
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if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_X))
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if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_X))
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return phdr;
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return phdr;
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}
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}
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return NULL;
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return NULL;
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}
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}
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void
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void
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nto_relocate_section_addresses (struct so_list *so, struct section_table *sec)
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nto_relocate_section_addresses (struct so_list *so, struct section_table *sec)
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{
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{
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/* Neutrino treats the l_addr base address field in link.h as different than
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/* Neutrino treats the l_addr base address field in link.h as different than
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the base address in the System V ABI and so the offset needs to be
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the base address in the System V ABI and so the offset needs to be
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calculated and applied to relocations. */
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calculated and applied to relocations. */
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Elf_Internal_Phdr *phdr = find_load_phdr (sec->bfd);
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Elf_Internal_Phdr *phdr = find_load_phdr (sec->bfd);
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unsigned vaddr = phdr ? phdr->p_vaddr : 0;
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unsigned vaddr = phdr ? phdr->p_vaddr : 0;
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sec->addr = nto_truncate_ptr (sec->addr + LM_ADDR (so) - vaddr);
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sec->addr = nto_truncate_ptr (sec->addr + LM_ADDR (so) - vaddr);
|
sec->endaddr = nto_truncate_ptr (sec->endaddr + LM_ADDR (so) - vaddr);
|
sec->endaddr = nto_truncate_ptr (sec->endaddr + LM_ADDR (so) - vaddr);
|
}
|
}
|
|
|
/* This is cheating a bit because our linker code is in libc.so. If we
|
/* This is cheating a bit because our linker code is in libc.so. If we
|
ever implement lazy linking, this may need to be re-examined. */
|
ever implement lazy linking, this may need to be re-examined. */
|
int
|
int
|
nto_in_dynsym_resolve_code (CORE_ADDR pc)
|
nto_in_dynsym_resolve_code (CORE_ADDR pc)
|
{
|
{
|
if (in_plt_section (pc, NULL))
|
if (in_plt_section (pc, NULL))
|
return 1;
|
return 1;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
void
|
void
|
nto_generic_supply_gpregset (const struct regset *regset,
|
nto_generic_supply_gpregset (const struct regset *regset,
|
struct regcache *regcache, int regnum,
|
struct regcache *regcache, int regnum,
|
const void *gregs, size_t len)
|
const void *gregs, size_t len)
|
{
|
{
|
}
|
}
|
|
|
void
|
void
|
nto_generic_supply_fpregset (const struct regset *regset,
|
nto_generic_supply_fpregset (const struct regset *regset,
|
struct regcache *regcache, int regnum,
|
struct regcache *regcache, int regnum,
|
const void *fpregs, size_t len)
|
const void *fpregs, size_t len)
|
{
|
{
|
}
|
}
|
|
|
void
|
void
|
nto_generic_supply_altregset (const struct regset *regset,
|
nto_generic_supply_altregset (const struct regset *regset,
|
struct regcache *regcache, int regnum,
|
struct regcache *regcache, int regnum,
|
const void *altregs, size_t len)
|
const void *altregs, size_t len)
|
{
|
{
|
}
|
}
|
|
|
void
|
void
|
nto_dummy_supply_regset (struct regcache *regcache, char *regs)
|
nto_dummy_supply_regset (struct regcache *regcache, char *regs)
|
{
|
{
|
/* Do nothing. */
|
/* Do nothing. */
|
}
|
}
|
|
|
enum gdb_osabi
|
enum gdb_osabi
|
nto_elf_osabi_sniffer (bfd *abfd)
|
nto_elf_osabi_sniffer (bfd *abfd)
|
{
|
{
|
if (nto_is_nto_target)
|
if (nto_is_nto_target)
|
return nto_is_nto_target (abfd);
|
return nto_is_nto_target (abfd);
|
return GDB_OSABI_UNKNOWN;
|
return GDB_OSABI_UNKNOWN;
|
}
|
}
|
|
|
void
|
void
|
nto_initialize_signals (void)
|
nto_initialize_signals (void)
|
{
|
{
|
/* We use SIG45 for pulses, or something, so nostop, noprint
|
/* We use SIG45 for pulses, or something, so nostop, noprint
|
and pass them. */
|
and pass them. */
|
signal_stop_update (target_signal_from_name ("SIG45"), 0);
|
signal_stop_update (target_signal_from_name ("SIG45"), 0);
|
signal_print_update (target_signal_from_name ("SIG45"), 0);
|
signal_print_update (target_signal_from_name ("SIG45"), 0);
|
signal_pass_update (target_signal_from_name ("SIG45"), 1);
|
signal_pass_update (target_signal_from_name ("SIG45"), 1);
|
|
|
/* By default we don't want to stop on these two, but we do want to pass. */
|
/* By default we don't want to stop on these two, but we do want to pass. */
|
#if defined(SIGSELECT)
|
#if defined(SIGSELECT)
|
signal_stop_update (SIGSELECT, 0);
|
signal_stop_update (SIGSELECT, 0);
|
signal_print_update (SIGSELECT, 0);
|
signal_print_update (SIGSELECT, 0);
|
signal_pass_update (SIGSELECT, 1);
|
signal_pass_update (SIGSELECT, 1);
|
#endif
|
#endif
|
|
|
#if defined(SIGPHOTON)
|
#if defined(SIGPHOTON)
|
signal_stop_update (SIGPHOTON, 0);
|
signal_stop_update (SIGPHOTON, 0);
|
signal_print_update (SIGPHOTON, 0);
|
signal_print_update (SIGPHOTON, 0);
|
signal_pass_update (SIGPHOTON, 1);
|
signal_pass_update (SIGPHOTON, 1);
|
#endif
|
#endif
|
}
|
}
|
|
|
void
|
void
|
_initialize_nto_tdep (void)
|
_initialize_nto_tdep (void)
|
{
|
{
|
add_setshow_zinteger_cmd ("nto-debug", class_maintenance,
|
add_setshow_zinteger_cmd ("nto-debug", class_maintenance,
|
&nto_internal_debugging, _("\
|
&nto_internal_debugging, _("\
|
Set QNX NTO internal debugging."), _("\
|
Set QNX NTO internal debugging."), _("\
|
Show QNX NTO internal debugging."), _("\
|
Show QNX NTO internal debugging."), _("\
|
When non-zero, nto specific debug info is\n\
|
When non-zero, nto specific debug info is\n\
|
displayed. Different information is displayed\n\
|
displayed. Different information is displayed\n\
|
for different positive values."),
|
for different positive values."),
|
NULL,
|
NULL,
|
NULL, /* FIXME: i18n: QNX NTO internal debugging is %s. */
|
NULL, /* FIXME: i18n: QNX NTO internal debugging is %s. */
|
&setdebuglist, &showdebuglist);
|
&setdebuglist, &showdebuglist);
|
}
|
}
|
|
|
