416 lines
10 KiB
C
416 lines
10 KiB
C
/* nto-tdep.c - general QNX Neutrino target functionality.
|
|
|
|
Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011
|
|
Free Software Foundation, Inc.
|
|
|
|
Contributed by QNX Software Systems Ltd.
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "defs.h"
|
|
#include "gdb_stat.h"
|
|
#include "gdb_string.h"
|
|
#include "nto-tdep.h"
|
|
#include "top.h"
|
|
#include "cli/cli-decode.h"
|
|
#include "cli/cli-cmds.h"
|
|
#include "inferior.h"
|
|
#include "gdbarch.h"
|
|
#include "bfd.h"
|
|
#include "elf-bfd.h"
|
|
#include "solib-svr4.h"
|
|
#include "gdbcore.h"
|
|
#include "objfiles.h"
|
|
|
|
#include <string.h>
|
|
|
|
#ifdef __CYGWIN__
|
|
#include <sys/cygwin.h>
|
|
#endif
|
|
|
|
#ifdef __CYGWIN__
|
|
static char default_nto_target[] = "C:\\QNXsdk\\target\\qnx6";
|
|
#elif defined(__sun__) || defined(linux)
|
|
static char default_nto_target[] = "/opt/QNXsdk/target/qnx6";
|
|
#else
|
|
static char default_nto_target[] = "";
|
|
#endif
|
|
|
|
struct nto_target_ops current_nto_target;
|
|
|
|
static char *
|
|
nto_target (void)
|
|
{
|
|
char *p = getenv ("QNX_TARGET");
|
|
|
|
#ifdef __CYGWIN__
|
|
static char buf[PATH_MAX];
|
|
if (p)
|
|
cygwin_conv_to_posix_path (p, buf);
|
|
else
|
|
cygwin_conv_to_posix_path (default_nto_target, buf);
|
|
return buf;
|
|
#else
|
|
return p ? p : default_nto_target;
|
|
#endif
|
|
}
|
|
|
|
/* Take a string such as i386, rs6000, etc. and map it onto CPUTYPE_X86,
|
|
CPUTYPE_PPC, etc. as defined in nto-share/dsmsgs.h. */
|
|
int
|
|
nto_map_arch_to_cputype (const char *arch)
|
|
{
|
|
if (!strcmp (arch, "i386") || !strcmp (arch, "x86"))
|
|
return CPUTYPE_X86;
|
|
if (!strcmp (arch, "rs6000") || !strcmp (arch, "powerpc"))
|
|
return CPUTYPE_PPC;
|
|
if (!strcmp (arch, "mips"))
|
|
return CPUTYPE_MIPS;
|
|
if (!strcmp (arch, "arm"))
|
|
return CPUTYPE_ARM;
|
|
if (!strcmp (arch, "sh"))
|
|
return CPUTYPE_SH;
|
|
return CPUTYPE_UNKNOWN;
|
|
}
|
|
|
|
int
|
|
nto_find_and_open_solib (char *solib, unsigned o_flags, char **temp_pathname)
|
|
{
|
|
char *buf, *arch_path, *nto_root, *endian;
|
|
const char *base;
|
|
const char *arch;
|
|
int ret;
|
|
#define PATH_FMT \
|
|
"%s/lib:%s/usr/lib:%s/usr/photon/lib:%s/usr/photon/dll:%s/lib/dll"
|
|
|
|
nto_root = nto_target ();
|
|
if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name, "i386") == 0)
|
|
{
|
|
arch = "x86";
|
|
endian = "";
|
|
}
|
|
else if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
|
|
"rs6000") == 0
|
|
|| strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
|
|
"powerpc") == 0)
|
|
{
|
|
arch = "ppc";
|
|
endian = "be";
|
|
}
|
|
else
|
|
{
|
|
arch = gdbarch_bfd_arch_info (target_gdbarch)->arch_name;
|
|
endian = gdbarch_byte_order (target_gdbarch)
|
|
== BFD_ENDIAN_BIG ? "be" : "le";
|
|
}
|
|
|
|
/* In case nto_root is short, add strlen(solib)
|
|
so we can reuse arch_path below. */
|
|
arch_path =
|
|
alloca (strlen (nto_root) + strlen (arch) + strlen (endian) + 2 +
|
|
strlen (solib));
|
|
sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
|
|
|
|
buf = alloca (strlen (PATH_FMT) + strlen (arch_path) * 5 + 1);
|
|
sprintf (buf, PATH_FMT, arch_path, arch_path, arch_path, arch_path,
|
|
arch_path);
|
|
|
|
base = lbasename (solib);
|
|
ret = openp (buf, 1, base, o_flags, temp_pathname);
|
|
if (ret < 0 && base != solib)
|
|
{
|
|
sprintf (arch_path, "/%s", solib);
|
|
ret = open (arch_path, o_flags, 0);
|
|
if (temp_pathname)
|
|
{
|
|
if (ret >= 0)
|
|
*temp_pathname = gdb_realpath (arch_path);
|
|
else
|
|
**temp_pathname = '\0';
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
nto_init_solib_absolute_prefix (void)
|
|
{
|
|
char buf[PATH_MAX * 2], arch_path[PATH_MAX];
|
|
char *nto_root, *endian;
|
|
const char *arch;
|
|
|
|
nto_root = nto_target ();
|
|
if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name, "i386") == 0)
|
|
{
|
|
arch = "x86";
|
|
endian = "";
|
|
}
|
|
else if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
|
|
"rs6000") == 0
|
|
|| strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
|
|
"powerpc") == 0)
|
|
{
|
|
arch = "ppc";
|
|
endian = "be";
|
|
}
|
|
else
|
|
{
|
|
arch = gdbarch_bfd_arch_info (target_gdbarch)->arch_name;
|
|
endian = gdbarch_byte_order (target_gdbarch)
|
|
== BFD_ENDIAN_BIG ? "be" : "le";
|
|
}
|
|
|
|
sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
|
|
|
|
sprintf (buf, "set solib-absolute-prefix %s", arch_path);
|
|
execute_command (buf, 0);
|
|
}
|
|
|
|
char **
|
|
nto_parse_redirection (char *pargv[], const char **pin, const char **pout,
|
|
const char **perr)
|
|
{
|
|
char **argv;
|
|
char *in, *out, *err, *p;
|
|
int argc, i, n;
|
|
|
|
for (n = 0; pargv[n]; n++);
|
|
if (n == 0)
|
|
return NULL;
|
|
in = "";
|
|
out = "";
|
|
err = "";
|
|
|
|
argv = xcalloc (n + 1, sizeof argv[0]);
|
|
argc = n;
|
|
for (i = 0, n = 0; n < argc; n++)
|
|
{
|
|
p = pargv[n];
|
|
if (*p == '>')
|
|
{
|
|
p++;
|
|
if (*p)
|
|
out = p;
|
|
else
|
|
out = pargv[++n];
|
|
}
|
|
else if (*p == '<')
|
|
{
|
|
p++;
|
|
if (*p)
|
|
in = p;
|
|
else
|
|
in = pargv[++n];
|
|
}
|
|
else if (*p++ == '2' && *p++ == '>')
|
|
{
|
|
if (*p == '&' && *(p + 1) == '1')
|
|
err = out;
|
|
else if (*p)
|
|
err = p;
|
|
else
|
|
err = pargv[++n];
|
|
}
|
|
else
|
|
argv[i++] = pargv[n];
|
|
}
|
|
*pin = in;
|
|
*pout = out;
|
|
*perr = err;
|
|
return argv;
|
|
}
|
|
|
|
/* The struct lm_info, lm_addr, and nto_truncate_ptr are copied from
|
|
solib-svr4.c to support nto_relocate_section_addresses
|
|
which is different from the svr4 version. */
|
|
|
|
/* Link map info to include in an allocated so_list entry */
|
|
|
|
struct lm_info
|
|
{
|
|
/* Pointer to copy of link map from inferior. The type is char *
|
|
rather than void *, so that we may use byte offsets to find the
|
|
various fields without the need for a cast. */
|
|
gdb_byte *lm;
|
|
|
|
/* Amount by which addresses in the binary should be relocated to
|
|
match the inferior. This could most often be taken directly
|
|
from lm, but when prelinking is involved and the prelink base
|
|
address changes, we may need a different offset, we want to
|
|
warn about the difference and compute it only once. */
|
|
CORE_ADDR l_addr;
|
|
|
|
/* The target location of lm. */
|
|
CORE_ADDR lm_addr;
|
|
};
|
|
|
|
|
|
static CORE_ADDR
|
|
lm_addr (struct so_list *so)
|
|
{
|
|
if (so->lm_info->l_addr == (CORE_ADDR)-1)
|
|
{
|
|
struct link_map_offsets *lmo = nto_fetch_link_map_offsets ();
|
|
struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
|
|
|
|
so->lm_info->l_addr =
|
|
extract_typed_address (so->lm_info->lm + lmo->l_addr_offset, ptr_type);
|
|
}
|
|
return so->lm_info->l_addr;
|
|
}
|
|
|
|
static CORE_ADDR
|
|
nto_truncate_ptr (CORE_ADDR addr)
|
|
{
|
|
if (gdbarch_ptr_bit (target_gdbarch) == sizeof (CORE_ADDR) * 8)
|
|
/* We don't need to truncate anything, and the bit twiddling below
|
|
will fail due to overflow problems. */
|
|
return addr;
|
|
else
|
|
return addr & (((CORE_ADDR) 1 << gdbarch_ptr_bit (target_gdbarch)) - 1);
|
|
}
|
|
|
|
static Elf_Internal_Phdr *
|
|
find_load_phdr (bfd *abfd)
|
|
{
|
|
Elf_Internal_Phdr *phdr;
|
|
unsigned int i;
|
|
|
|
if (!elf_tdata (abfd))
|
|
return NULL;
|
|
|
|
phdr = elf_tdata (abfd)->phdr;
|
|
for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
|
|
{
|
|
if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_X))
|
|
return phdr;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
nto_relocate_section_addresses (struct so_list *so, struct target_section *sec)
|
|
{
|
|
/* Neutrino treats the l_addr base address field in link.h as different than
|
|
the base address in the System V ABI and so the offset needs to be
|
|
calculated and applied to relocations. */
|
|
Elf_Internal_Phdr *phdr = find_load_phdr (sec->bfd);
|
|
unsigned vaddr = phdr ? phdr->p_vaddr : 0;
|
|
|
|
sec->addr = nto_truncate_ptr (sec->addr + 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
|
|
ever implement lazy linking, this may need to be re-examined. */
|
|
int
|
|
nto_in_dynsym_resolve_code (CORE_ADDR pc)
|
|
{
|
|
if (in_plt_section (pc, NULL))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
nto_dummy_supply_regset (struct regcache *regcache, char *regs)
|
|
{
|
|
/* Do nothing. */
|
|
}
|
|
|
|
enum gdb_osabi
|
|
nto_elf_osabi_sniffer (bfd *abfd)
|
|
{
|
|
if (nto_is_nto_target)
|
|
return nto_is_nto_target (abfd);
|
|
return GDB_OSABI_UNKNOWN;
|
|
}
|
|
|
|
static const char *nto_thread_state_str[] =
|
|
{
|
|
"DEAD", /* 0 0x00 */
|
|
"RUNNING", /* 1 0x01 */
|
|
"READY", /* 2 0x02 */
|
|
"STOPPED", /* 3 0x03 */
|
|
"SEND", /* 4 0x04 */
|
|
"RECEIVE", /* 5 0x05 */
|
|
"REPLY", /* 6 0x06 */
|
|
"STACK", /* 7 0x07 */
|
|
"WAITTHREAD", /* 8 0x08 */
|
|
"WAITPAGE", /* 9 0x09 */
|
|
"SIGSUSPEND", /* 10 0x0a */
|
|
"SIGWAITINFO", /* 11 0x0b */
|
|
"NANOSLEEP", /* 12 0x0c */
|
|
"MUTEX", /* 13 0x0d */
|
|
"CONDVAR", /* 14 0x0e */
|
|
"JOIN", /* 15 0x0f */
|
|
"INTR", /* 16 0x10 */
|
|
"SEM", /* 17 0x11 */
|
|
"WAITCTX", /* 18 0x12 */
|
|
"NET_SEND", /* 19 0x13 */
|
|
"NET_REPLY" /* 20 0x14 */
|
|
};
|
|
|
|
char *
|
|
nto_extra_thread_info (struct thread_info *ti)
|
|
{
|
|
if (ti && ti->private
|
|
&& ti->private->state < ARRAY_SIZE (nto_thread_state_str))
|
|
return (char *)nto_thread_state_str [ti->private->state];
|
|
return "";
|
|
}
|
|
|
|
void
|
|
nto_initialize_signals (void)
|
|
{
|
|
/* We use SIG45 for pulses, or something, so nostop, noprint
|
|
and pass them. */
|
|
signal_stop_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);
|
|
|
|
/* By default we don't want to stop on these two, but we do want to pass. */
|
|
#if defined(SIGSELECT)
|
|
signal_stop_update (SIGSELECT, 0);
|
|
signal_print_update (SIGSELECT, 0);
|
|
signal_pass_update (SIGSELECT, 1);
|
|
#endif
|
|
|
|
#if defined(SIGPHOTON)
|
|
signal_stop_update (SIGPHOTON, 0);
|
|
signal_print_update (SIGPHOTON, 0);
|
|
signal_pass_update (SIGPHOTON, 1);
|
|
#endif
|
|
}
|
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
|
extern initialize_file_ftype _initialize_nto_tdep;
|
|
|
|
void
|
|
_initialize_nto_tdep (void)
|
|
{
|
|
add_setshow_zinteger_cmd ("nto-debug", class_maintenance,
|
|
&nto_internal_debugging, _("\
|
|
Set QNX NTO internal debugging."), _("\
|
|
Show QNX NTO internal debugging."), _("\
|
|
When non-zero, nto specific debug info is\n\
|
|
displayed. Different information is displayed\n\
|
|
for different positive values."),
|
|
NULL,
|
|
NULL, /* FIXME: i18n: QNX NTO internal
|
|
debugging is %s. */
|
|
&setdebuglist, &showdebuglist);
|
|
}
|