/* OS ABI variant handling for GDB.
- Copyright 2001, 2002 Free Software Foundation, Inc.
+
+ Copyright (C) 2001-2020 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
+ 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,
+ 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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+
#include "osabi.h"
+#include "arch-utils.h"
+#include "gdbcmd.h"
+#include "command.h"
#include "elf-bfd.h"
+#ifndef GDB_OSABI_DEFAULT
+#define GDB_OSABI_DEFAULT GDB_OSABI_UNKNOWN
+#endif
+
+/* State for the "set osabi" command. */
+static enum { osabi_auto, osabi_default, osabi_user } user_osabi_state;
+static enum gdb_osabi user_selected_osabi;
+static const char *gdb_osabi_available_names[GDB_OSABI_INVALID + 3] = {
+ "auto",
+ "default",
+ "none",
+ NULL
+};
+static const char *set_osabi_string;
+
+/* Names associated with each osabi. */
+
+struct osabi_names
+{
+ /* The "pretty" name. */
+
+ const char *pretty;
+
+ /* The triplet regexp, or NULL if not known. */
+
+ const char *regexp;
+};
/* This table matches the indices assigned to enum gdb_osabi. Keep
them in sync. */
-static const char * const gdb_osabi_names[] =
+static const struct osabi_names gdb_osabi_names[] =
{
- "<unknown>",
-
- "SVR4",
- "GNU/Hurd",
- "Solaris",
- "OSF/1",
- "GNU/Linux",
- "FreeBSD a.out",
- "FreeBSD ELF",
- "NetBSD a.out",
- "NetBSD ELF",
- "Windows CE",
-
- "ARM EABI v1",
- "ARM EABI v2",
- "ARM APCS",
-
- "<invalid>"
+ { "unknown", NULL },
+ { "none", NULL },
+
+ { "SVR4", NULL },
+ { "GNU/Hurd", NULL },
+ { "Solaris", NULL },
+ { "GNU/Linux", "linux(-gnu[^-]*)?" },
+ { "FreeBSD", NULL },
+ { "NetBSD", NULL },
+ { "OpenBSD", NULL },
+ { "WindowsCE", NULL },
+ { "DJGPP", NULL },
+ { "QNX-Neutrino", NULL },
+ { "Cygwin", NULL },
+ { "Windows", NULL },
+ { "AIX", NULL },
+ { "DICOS", NULL },
+ { "Darwin", NULL },
+ { "Symbian", NULL },
+ { "OpenVMS", NULL },
+ { "LynxOS178", NULL },
+ { "Newlib", NULL },
+ { "SDE", NULL },
+ { "PikeOS", NULL },
+
+ { "<invalid>", NULL }
};
const char *
gdbarch_osabi_name (enum gdb_osabi osabi)
{
if (osabi >= GDB_OSABI_UNKNOWN && osabi < GDB_OSABI_INVALID)
- return gdb_osabi_names[osabi];
+ return gdb_osabi_names[osabi].pretty;
+
+ return gdb_osabi_names[GDB_OSABI_INVALID].pretty;
+}
+
+/* See osabi.h. */
+
+const char *
+osabi_triplet_regexp (enum gdb_osabi osabi)
+{
+ if (osabi >= GDB_OSABI_UNKNOWN && osabi < GDB_OSABI_INVALID)
+ return gdb_osabi_names[osabi].regexp;
+
+ return gdb_osabi_names[GDB_OSABI_INVALID].regexp;
+}
+
+/* Lookup the OS ABI corresponding to the specified target description
+ string. */
- return gdb_osabi_names[GDB_OSABI_INVALID];
+enum gdb_osabi
+osabi_from_tdesc_string (const char *name)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE (gdb_osabi_names); i++)
+ if (strcmp (name, gdb_osabi_names[i].pretty) == 0)
+ {
+ /* See note above: the name table matches the indices assigned
+ to enum gdb_osabi. */
+ enum gdb_osabi osabi = (enum gdb_osabi) i;
+
+ if (osabi == GDB_OSABI_INVALID)
+ return GDB_OSABI_UNKNOWN;
+ else
+ return osabi;
+ }
+
+ return GDB_OSABI_UNKNOWN;
}
/* Handler for a given architecture/OS ABI pair. There should be only
one handler for a given OS ABI each architecture family. */
-struct gdb_osabi_handler
+struct gdb_osabi_handler
{
struct gdb_osabi_handler *next;
- enum bfd_architecture arch;
+ const struct bfd_arch_info *arch_info;
enum gdb_osabi osabi;
void (*init_osabi)(struct gdbarch_info, struct gdbarch *);
};
static struct gdb_osabi_handler *gdb_osabi_handler_list;
void
-gdbarch_register_osabi (enum bfd_architecture arch, enum gdb_osabi osabi,
- void (*init_osabi)(struct gdbarch_info,
+gdbarch_register_osabi (enum bfd_architecture arch, unsigned long machine,
+ enum gdb_osabi osabi,
+ void (*init_osabi)(struct gdbarch_info,
struct gdbarch *))
{
struct gdb_osabi_handler **handler_p;
+ const struct bfd_arch_info *arch_info = bfd_lookup_arch (arch, machine);
+ const char **name_ptr;
/* Registering an OS ABI handler for "unknown" is not allowed. */
if (osabi == GDB_OSABI_UNKNOWN)
{
internal_error
(__FILE__, __LINE__,
- "gdbarch_register_osabi: An attempt to register a handler for "
- "OS ABI \"%s\" for architecture %s was made. The handler will "
- "not be registered",
+ _("gdbarch_register_osabi: An attempt to register a handler for "
+ "OS ABI \"%s\" for architecture %s was made. The handler will "
+ "not be registered"),
gdbarch_osabi_name (osabi),
- bfd_printable_arch_mach (arch, 0));
+ bfd_printable_arch_mach (arch, machine));
return;
}
+ gdb_assert (arch_info);
+
for (handler_p = &gdb_osabi_handler_list; *handler_p != NULL;
handler_p = &(*handler_p)->next)
{
- if ((*handler_p)->arch == arch
+ if ((*handler_p)->arch_info == arch_info
&& (*handler_p)->osabi == osabi)
{
internal_error
(__FILE__, __LINE__,
- "gdbarch_register_osabi: A handler for OS ABI \"%s\" "
- "has already been registered for architecture %s",
+ _("gdbarch_register_osabi: A handler for OS ABI \"%s\" "
+ "has already been registered for architecture %s"),
gdbarch_osabi_name (osabi),
- bfd_printable_arch_mach (arch, 0));
+ arch_info->printable_name);
/* If user wants to continue, override previous definition. */
(*handler_p)->init_osabi = init_osabi;
return;
}
}
- (*handler_p)
- = (struct gdb_osabi_handler *) xmalloc (sizeof (struct gdb_osabi_handler));
+ (*handler_p) = XNEW (struct gdb_osabi_handler);
(*handler_p)->next = NULL;
- (*handler_p)->arch = arch;
+ (*handler_p)->arch_info = arch_info;
(*handler_p)->osabi = osabi;
(*handler_p)->init_osabi = init_osabi;
+
+ /* Add this OS ABI to the list of enum values for "set osabi", if it isn't
+ already there. */
+ for (name_ptr = gdb_osabi_available_names; *name_ptr; name_ptr ++)
+ {
+ if (*name_ptr == gdbarch_osabi_name (osabi))
+ return;
+ }
+ *name_ptr++ = gdbarch_osabi_name (osabi);
+ *name_ptr = NULL;
}
\f
-/* Sniffer to find the OS ABI for a given file's architecture and flavour.
+/* Sniffer to find the OS ABI for a given file's architecture and flavour.
It is legal to have multiple sniffers for each arch/flavour pair, to
disambiguate one OS's a.out from another, for example. The first sniffer
to return something other than GDB_OSABI_UNKNOWN wins, so a sniffer should
void
gdbarch_register_osabi_sniffer (enum bfd_architecture arch,
- enum bfd_flavour flavour,
+ enum bfd_flavour flavour,
enum gdb_osabi (*sniffer_fn)(bfd *))
{
struct gdb_osabi_sniffer *sniffer;
- sniffer =
- (struct gdb_osabi_sniffer *) xmalloc (sizeof (struct gdb_osabi_sniffer));
+ sniffer = XNEW (struct gdb_osabi_sniffer);
sniffer->arch = arch;
sniffer->flavour = flavour;
sniffer->sniffer = sniffer_fn;
enum gdb_osabi osabi, match;
int match_specific;
+ /* If we aren't in "auto" mode, return the specified OS ABI. */
+ if (user_osabi_state == osabi_user)
+ return user_selected_osabi;
+
+ /* If we don't have a binary, just return unknown. The caller may
+ have other sources the OSABI can be extracted from, e.g., the
+ target description. */
+ if (abfd == NULL)
+ return GDB_OSABI_UNKNOWN;
+
match = GDB_OSABI_UNKNOWN;
match_specific = 0;
{
internal_error
(__FILE__, __LINE__,
- "gdbarch_lookup_osabi: invalid OS ABI (%d) from sniffer "
- "for architecture %s flavour %d",
+ _("gdbarch_lookup_osabi: invalid OS ABI (%d) from sniffer "
+ "for architecture %s flavour %d"),
(int) osabi,
bfd_printable_arch_mach (bfd_get_arch (abfd), 0),
(int) bfd_get_flavour (abfd));
|| (!match_specific && sniffer->arch == bfd_arch_unknown))
{
internal_error
- (__FILE__, __LINE__,
- "gdbarch_lookup_osabi: multiple %sspecific OS ABI "
+ (__FILE__, __LINE__,
+ _("gdbarch_lookup_osabi: multiple %sspecific OS ABI "
"match for architecture %s flavour %d: first "
- "match \"%s\", second match \"%s\"",
+ "match \"%s\", second match \"%s\""),
match_specific ? "" : "non-",
- bfd_printable_arch_mach (bfd_get_arch (abfd), 0),
- (int) bfd_get_flavour (abfd),
- gdbarch_osabi_name (match),
- gdbarch_osabi_name (osabi));
+ bfd_printable_arch_mach (bfd_get_arch (abfd), 0),
+ (int) bfd_get_flavour (abfd),
+ gdbarch_osabi_name (match),
+ gdbarch_osabi_name (osabi));
}
else if (sniffer->arch != bfd_arch_unknown)
{
return match;
}
+
+/* Return non-zero if architecture A can run code written for
+ architecture B. */
+static int
+can_run_code_for (const struct bfd_arch_info *a, const struct bfd_arch_info *b)
+{
+ /* BFD's 'A->compatible (A, B)' functions return zero if A and B are
+ incompatible. But if they are compatible, it returns the 'more
+ featureful' of the two arches. That is, if A can run code
+ written for B, but B can't run code written for A, then it'll
+ return A.
+
+ struct bfd_arch_info objects are singletons: that is, there's
+ supposed to be exactly one instance for a given machine. So you
+ can tell whether two are equivalent by comparing pointers. */
+ return (a == b || a->compatible (a, b) == a);
+}
+
+
void
-gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch,
- enum gdb_osabi osabi)
+gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdb_osabi_handler *handler;
- bfd *abfd = info.abfd;
- const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (gdbarch);
- if (osabi == GDB_OSABI_UNKNOWN)
- {
- /* Don't complain about not knowing the OS ABI if we don't
- have an inferior. */
- if (info.abfd)
- fprintf_filtered
- (gdb_stderr, "GDB doesn't recognize the OS ABI of the inferior. "
- "Attempting to continue with the default %s settings",
- bfd_printable_arch_mach (arch_info->arch, arch_info->mach));
- return;
- }
+ gdb_assert (info.osabi != GDB_OSABI_UNKNOWN);
for (handler = gdb_osabi_handler_list; handler != NULL;
handler = handler->next)
{
- if (handler->arch == bfd_get_arch (abfd)
- && handler->osabi == osabi)
+ if (handler->osabi != info.osabi)
+ continue;
+
+ /* If the architecture described by ARCH_INFO can run code for
+ the architecture we registered the handler for, then the
+ handler is applicable. Note, though, that if the handler is
+ for an architecture that is a superset of ARCH_INFO, we can't
+ use that --- it would be perfectly correct for it to install
+ gdbarch methods that refer to registers / instructions /
+ other facilities ARCH_INFO doesn't have.
+
+ NOTE: kettenis/20021027: There may be more than one machine
+ type that is compatible with the desired machine type. Right
+ now we simply return the first match, which is fine for now.
+ However, we might want to do something smarter in the future. */
+ /* NOTE: cagney/2003-10-23: The code for "a can_run_code_for b"
+ is implemented using BFD's compatible method (a->compatible
+ (b) == a -- the lowest common denominator between a and b is
+ a). That method's definition of compatible may not be as you
+ expect. For instance the test "amd64 can run code for i386"
+ (or more generally "64-bit ISA can run code for the 32-bit
+ ISA"). BFD doesn't normally consider 32-bit and 64-bit
+ "compatible" so it doesn't succeed. */
+ if (can_run_code_for (info.bfd_arch_info, handler->arch_info))
{
(*handler->init_osabi) (info, gdbarch);
return;
}
}
- /* We assume that if GDB_MULTI_ARCH is less than GDB_MULTI_ARCH_TM
- that an ABI variant can be supported by overriding definitions in
- the tm-file. */
- if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL)
- fprintf_filtered
- (gdb_stderr,
- "A handler for the OS ABI \"%s\" is not built into this "
- "configuration of GDB. "
- "Attempting to continue with the default %s settings",
- gdbarch_osabi_name (osabi),
- bfd_printable_arch_mach (arch_info->arch, arch_info->mach));
+ if (info.osabi == GDB_OSABI_NONE)
+ {
+ /* Don't complain about no OSABI. Assume the user knows
+ what they are doing. */
+ return;
+ }
+
+ warning
+ ("A handler for the OS ABI \"%s\" is not built into this configuration\n"
+ "of GDB. Attempting to continue with the default %s settings.\n",
+ gdbarch_osabi_name (info.osabi),
+ info.bfd_arch_info->printable_name);
}
\f
+/* Limit on the amount of data to be read. */
+#define MAX_NOTESZ 128
+
+/* Return non-zero if NOTE matches NAME, DESCSZ and TYPE. If
+ *SECTSIZE is non-zero, then this reads that many bytes from
+ the start of the section and clears *SECTSIZE. */
+
+static int
+check_note (bfd *abfd, asection *sect, char *note, unsigned int *sectsize,
+ const char *name, unsigned long descsz, unsigned long type)
+{
+ unsigned long notesz;
+
+ if (*sectsize)
+ {
+ if (!bfd_get_section_contents (abfd, sect, note, 0, *sectsize))
+ return 0;
+ *sectsize = 0;
+ }
+
+ /* Calculate the size of this note. */
+ notesz = strlen (name) + 1;
+ notesz = ((notesz + 3) & ~3);
+ notesz += descsz;
+ notesz = ((notesz + 3) & ~3);
+
+ /* If this assertion triggers, increase MAX_NOTESZ. */
+ gdb_assert (notesz <= MAX_NOTESZ);
+
+ /* Check whether SECT is big enough to contain the complete note. */
+ if (notesz > bfd_section_size (sect))
+ return 0;
+
+ /* Check the note name. */
+ if (bfd_h_get_32 (abfd, note) != (strlen (name) + 1)
+ || strcmp (note + 12, name) != 0)
+ return 0;
+
+ /* Check the descriptor size. */
+ if (bfd_h_get_32 (abfd, note + 4) != descsz)
+ return 0;
+
+ /* Check the note type. */
+ if (bfd_h_get_32 (abfd, note + 8) != type)
+ return 0;
+
+ return 1;
+}
/* Generic sniffer for ELF flavoured files. */
void
generic_elf_osabi_sniff_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
{
- enum gdb_osabi *os_ident_ptr = obj;
+ enum gdb_osabi *osabi = (enum gdb_osabi *) obj;
const char *name;
unsigned int sectsize;
+ char *note;
- name = bfd_get_section_name (abfd, sect);
- sectsize = bfd_section_size (abfd, sect);
-
- /* .note.ABI-tag notes, used by GNU/Linux and FreeBSD. */
- if (strcmp (name, ".note.ABI-tag") == 0 && sectsize > 0)
- {
- unsigned int name_length, data_length, note_type;
- char *note;
+ name = bfd_section_name (sect);
+ sectsize = bfd_section_size (sect);
- /* If the section is larger than this, it's probably not what we are
- looking for. */
- if (sectsize > 128)
- sectsize = 128;
+ /* Limit the amount of data to read. */
+ if (sectsize > MAX_NOTESZ)
+ sectsize = MAX_NOTESZ;
- note = alloca (sectsize);
+ /* We lazily read the section data here. Since we use
+ BFD_DECOMPRESS, we can't use bfd_get_section_contents on a
+ compressed section. But, since note sections are not compressed,
+ deferring the reading until we recognize the section avoids any
+ error. */
+ note = (char *) alloca (sectsize);
- bfd_get_section_contents (abfd, sect, note,
- (file_ptr) 0, (bfd_size_type) sectsize);
-
- name_length = bfd_h_get_32 (abfd, note);
- data_length = bfd_h_get_32 (abfd, note + 4);
- note_type = bfd_h_get_32 (abfd, note + 8);
-
- if (name_length == 4 && data_length == 16 && note_type == NT_GNU_ABI_TAG
- && strcmp (note + 12, "GNU") == 0)
+ /* .note.ABI-tag notes, used by GNU/Linux and FreeBSD. */
+ if (strcmp (name, ".note.ABI-tag") == 0)
+ {
+ /* GNU. */
+ if (check_note (abfd, sect, note, §size, "GNU", 16, NT_GNU_ABI_TAG))
{
- int os_number = bfd_h_get_32 (abfd, note + 16);
+ unsigned int abi_tag = bfd_h_get_32 (abfd, note + 16);
- switch (os_number)
+ switch (abi_tag)
{
case GNU_ABI_TAG_LINUX:
- *os_ident_ptr = GDB_OSABI_LINUX;
+ *osabi = GDB_OSABI_LINUX;
break;
case GNU_ABI_TAG_HURD:
- *os_ident_ptr = GDB_OSABI_HURD;
+ *osabi = GDB_OSABI_HURD;
break;
case GNU_ABI_TAG_SOLARIS:
- *os_ident_ptr = GDB_OSABI_SOLARIS;
+ *osabi = GDB_OSABI_SOLARIS;
+ break;
+
+ case GNU_ABI_TAG_FREEBSD:
+ *osabi = GDB_OSABI_FREEBSD;
+ break;
+
+ case GNU_ABI_TAG_NETBSD:
+ *osabi = GDB_OSABI_NETBSD;
break;
default:
- internal_error
- (__FILE__, __LINE__,
- "generic_elf_osabi_sniff_abi_tag_sections: unknown OS number %d",
- os_number);
+ warning (_("GNU ABI tag value %u unrecognized."), abi_tag);
+ break;
}
return;
}
- else if (name_length == 8 && data_length == 4
- && note_type == NT_FREEBSD_ABI_TAG
- && strcmp (note + 12, "FreeBSD") == 0)
+
+ /* FreeBSD. */
+ if (check_note (abfd, sect, note, §size, "FreeBSD", 4,
+ NT_FREEBSD_ABI_TAG))
{
- /* XXX Should we check the version here? Probably not
- necessary yet. */
- *os_ident_ptr = GDB_OSABI_FREEBSD_ELF;
+ /* There is no need to check the version yet. */
+ *osabi = GDB_OSABI_FREEBSD;
+ return;
}
+
return;
}
/* .note.netbsd.ident notes, used by NetBSD. */
- if (strcmp (name, ".note.netbsd.ident") == 0 && sectsize > 0)
+ if (strcmp (name, ".note.netbsd.ident") == 0
+ && check_note (abfd, sect, note, §size, "NetBSD", 4, NT_NETBSD_IDENT))
{
- unsigned int name_length, data_length, note_type;
- char *note;
-
- /* If the section is larger than this, it's probably not what we are
- looking for. */
- if (sectsize > 128)
- sectsize = 128;
-
- note = alloca (sectsize);
+ /* There is no need to check the version yet. */
+ *osabi = GDB_OSABI_NETBSD;
+ return;
+ }
- bfd_get_section_contents (abfd, sect, note,
- (file_ptr) 0, (bfd_size_type) sectsize);
-
- name_length = bfd_h_get_32 (abfd, note);
- data_length = bfd_h_get_32 (abfd, note + 4);
- note_type = bfd_h_get_32 (abfd, note + 8);
+ /* .note.openbsd.ident notes, used by OpenBSD. */
+ if (strcmp (name, ".note.openbsd.ident") == 0
+ && check_note (abfd, sect, note, §size, "OpenBSD", 4,
+ NT_OPENBSD_IDENT))
+ {
+ /* There is no need to check the version yet. */
+ *osabi = GDB_OSABI_OPENBSD;
+ return;
+ }
- if (name_length == 7 && data_length == 4 && note_type == NT_NETBSD_IDENT
- && strcmp (note + 12, "NetBSD") == 0)
- {
- /* XXX Should we check the version here? Probably not
- necessary yet. */
- *os_ident_ptr = GDB_OSABI_NETBSD_ELF;
- }
+ /* .note.netbsdcore.procinfo notes, used by NetBSD. */
+ if (strcmp (name, ".note.netbsdcore.procinfo") == 0)
+ {
+ *osabi = GDB_OSABI_NETBSD;
return;
}
}
switch (elfosabi)
{
case ELFOSABI_NONE:
- /* When elfosabi is ELFOSABI_NONE (0), then the ELF structures in the
- file are conforming to the base specification for that machine
- (there are no OS-specific extensions). In order to determine the
- real OS in use we must look for OS notes that have been added. */
+ case ELFOSABI_GNU:
+ case ELFOSABI_HPUX:
+ /* When the EI_OSABI field in the ELF header is ELFOSABI_NONE
+ (0), then the ELF structures in the file are conforming to
+ the base specification for that machine (there are no
+ OS-specific extensions). In order to determine the real OS
+ in use, we must look for OS-specific notes.
+
+ The same applies for ELFOSABI_GNU: this can mean GNU/Hurd,
+ GNU/Linux, and possibly more. */
+
+ /* And likewise ELFOSABI_HPUX. For some reason the default
+ value for the EI_OSABI field is ELFOSABI_HPUX for all PA-RISC
+ targets (with the exception of GNU/Linux). */
bfd_map_over_sections (abfd,
generic_elf_osabi_sniff_abi_tag_sections,
&osabi);
break;
case ELFOSABI_FREEBSD:
- osabi = GDB_OSABI_FREEBSD_ELF;
+ osabi = GDB_OSABI_FREEBSD;
break;
case ELFOSABI_NETBSD:
- osabi = GDB_OSABI_NETBSD_ELF;
+ osabi = GDB_OSABI_NETBSD;
break;
- case ELFOSABI_LINUX:
- osabi = GDB_OSABI_LINUX;
+ case ELFOSABI_SOLARIS:
+ osabi = GDB_OSABI_SOLARIS;
break;
- case ELFOSABI_HURD:
- osabi = GDB_OSABI_HURD;
+ case ELFOSABI_OPENVMS:
+ osabi = GDB_OSABI_OPENVMS;
break;
+ }
- case ELFOSABI_SOLARIS:
- osabi = GDB_OSABI_SOLARIS;
- break;
+ if (osabi == GDB_OSABI_UNKNOWN)
+ {
+ /* The FreeBSD folks have been naughty; they stored the string
+ "FreeBSD" in the padding of the e_ident field of the ELF
+ header to "brand" their ELF binaries in FreeBSD 3.x. */
+ if (memcmp (&elf_elfheader (abfd)->e_ident[8],
+ "FreeBSD", sizeof ("FreeBSD")) == 0)
+ osabi = GDB_OSABI_FREEBSD;
}
return osabi;
}
\f
+static void
+set_osabi (const char *args, int from_tty, struct cmd_list_element *c)
+{
+ struct gdbarch_info info;
+
+ if (strcmp (set_osabi_string, "auto") == 0)
+ user_osabi_state = osabi_auto;
+ else if (strcmp (set_osabi_string, "default") == 0)
+ {
+ user_selected_osabi = GDB_OSABI_DEFAULT;
+ user_osabi_state = osabi_user;
+ }
+ else
+ {
+ int i;
+ for (i = 1; i < GDB_OSABI_INVALID; i++)
+ {
+ enum gdb_osabi osabi = (enum gdb_osabi) i;
+
+ if (strcmp (set_osabi_string, gdbarch_osabi_name (osabi)) == 0)
+ {
+ user_selected_osabi = osabi;
+ user_osabi_state = osabi_user;
+ break;
+ }
+ }
+ if (i == GDB_OSABI_INVALID)
+ internal_error (__FILE__, __LINE__,
+ _("Invalid OS ABI \"%s\" passed to command handler."),
+ set_osabi_string);
+ }
+
+ /* NOTE: At some point (true multiple architectures) we'll need to be more
+ graceful here. */
+ gdbarch_info_init (&info);
+ if (! gdbarch_update_p (info))
+ internal_error (__FILE__, __LINE__, _("Updating OS ABI failed."));
+}
+
+static void
+show_osabi (struct ui_file *file, int from_tty, struct cmd_list_element *c,
+ const char *value)
+{
+ if (user_osabi_state == osabi_auto)
+ fprintf_filtered (file,
+ _("The current OS ABI is \"auto\" "
+ "(currently \"%s\").\n"),
+ gdbarch_osabi_name (gdbarch_osabi (get_current_arch ())));
+ else
+ fprintf_filtered (file, _("The current OS ABI is \"%s\".\n"),
+ gdbarch_osabi_name (user_selected_osabi));
+
+ if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN)
+ fprintf_filtered (file, _("The default OS ABI is \"%s\".\n"),
+ gdbarch_osabi_name (GDB_OSABI_DEFAULT));
+}
+
+void _initialize_gdb_osabi ();
void
-_initialize_gdb_osabi (void)
+_initialize_gdb_osabi ()
{
- if (strcmp (gdb_osabi_names[GDB_OSABI_INVALID], "<invalid>") != 0)
+ if (strcmp (gdb_osabi_names[GDB_OSABI_INVALID].pretty, "<invalid>") != 0)
internal_error
(__FILE__, __LINE__,
- "_initialize_gdb_osabi: gdb_osabi_names[] is inconsistent");
+ _("_initialize_gdb_osabi: gdb_osabi_names[] is inconsistent"));
/* Register a generic sniffer for ELF flavoured files. */
gdbarch_register_osabi_sniffer (bfd_arch_unknown,
bfd_target_elf_flavour,
generic_elf_osabi_sniffer);
+
+ /* Register the "set osabi" command. */
+ add_setshow_enum_cmd ("osabi", class_support, gdb_osabi_available_names,
+ &set_osabi_string,
+ _("Set OS ABI of target."),
+ _("Show OS ABI of target."),
+ NULL, set_osabi, show_osabi,
+ &setlist, &showlist);
+ user_osabi_state = osabi_auto;
}
projects / deliverable / binutils-gdb.git / blobdiff