| /* OS ABI variant handling for GDB. |
| |
| Copyright (C) 2001-2016 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 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 "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 struct osabi_names gdb_osabi_names[] = |
| { |
| { "none", NULL }, |
| |
| { "SVR4", NULL }, |
| { "GNU/Hurd", NULL }, |
| { "Solaris", NULL }, |
| { "GNU/Linux", "linux(-gnu)?" }, |
| { "FreeBSD/a.out", NULL }, |
| { "FreeBSD/ELF", NULL }, |
| { "NetBSD/a.out", NULL }, |
| { "NetBSD/ELF", NULL }, |
| { "OpenBSD/ELF", NULL }, |
| { "WindowsCE", NULL }, |
| { "DJGPP", NULL }, |
| { "HP-UX/ELF", NULL }, |
| { "HP-UX/SOM", NULL }, |
| { "QNX-Neutrino", NULL }, |
| { "Cygwin", NULL }, |
| { "AIX", NULL }, |
| { "DICOS", NULL }, |
| { "Darwin", NULL }, |
| { "Symbian", NULL }, |
| { "OpenVMS", NULL }, |
| { "LynxOS178", NULL }, |
| { "Newlib", NULL }, |
| { "SDE", NULL }, |
| { "Fuchsia", 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].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. */ |
| |
| 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 *next; |
| 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, 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_osabi_name (osabi), |
| 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_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_osabi_name (osabi), |
| arch_info->printable_name); |
| /* If user wants to continue, override previous definition. */ |
| (*handler_p)->init_osabi = init_osabi; |
| return; |
| } |
| } |
| |
| (*handler_p) = XNEW (struct gdb_osabi_handler); |
| (*handler_p)->next = NULL; |
| (*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; |
| } |
| |
| |
| /* 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 |
| be careful to claim a file only if it knows for sure what it is. */ |
| struct gdb_osabi_sniffer |
| { |
| struct gdb_osabi_sniffer *next; |
| enum bfd_architecture arch; /* bfd_arch_unknown == wildcard */ |
| enum bfd_flavour flavour; |
| enum gdb_osabi (*sniffer)(bfd *); |
| }; |
| |
| static struct gdb_osabi_sniffer *gdb_osabi_sniffer_list; |
| |
| void |
| gdbarch_register_osabi_sniffer (enum bfd_architecture arch, |
| enum bfd_flavour flavour, |
| enum gdb_osabi (*sniffer_fn)(bfd *)) |
| { |
| struct gdb_osabi_sniffer *sniffer; |
| |
| sniffer = XNEW (struct gdb_osabi_sniffer); |
| sniffer->arch = arch; |
| sniffer->flavour = flavour; |
| sniffer->sniffer = sniffer_fn; |
| |
| sniffer->next = gdb_osabi_sniffer_list; |
| gdb_osabi_sniffer_list = sniffer; |
| } |
| |
| |
| enum gdb_osabi |
| gdbarch_lookup_osabi (bfd *abfd) |
| { |
| struct gdb_osabi_sniffer *sniffer; |
| 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; |
| |
| for (sniffer = gdb_osabi_sniffer_list; sniffer != NULL; |
| sniffer = sniffer->next) |
| { |
| if ((sniffer->arch == bfd_arch_unknown /* wildcard */ |
| || sniffer->arch == bfd_get_arch (abfd)) |
| && sniffer->flavour == bfd_get_flavour (abfd)) |
| { |
| osabi = (*sniffer->sniffer) (abfd); |
| if (osabi < GDB_OSABI_UNKNOWN || osabi >= GDB_OSABI_INVALID) |
| { |
| internal_error |
| (__FILE__, __LINE__, |
| _("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)); |
| } |
| else if (osabi != GDB_OSABI_UNKNOWN) |
| { |
| /* A specific sniffer always overrides a generic sniffer. |
| Croak on multiple match if the two matches are of the |
| same class. If the user wishes to continue, we'll use |
| the first match. */ |
| if (match != GDB_OSABI_UNKNOWN) |
| { |
| if ((match_specific && sniffer->arch != bfd_arch_unknown) |
| || (!match_specific && sniffer->arch == bfd_arch_unknown)) |
| { |
| internal_error |
| (__FILE__, __LINE__, |
| _("gdbarch_lookup_osabi: multiple %sspecific OS ABI " |
| "match for architecture %s flavour %d: first " |
| "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)); |
| } |
| else if (sniffer->arch != bfd_arch_unknown) |
| { |
| match = osabi; |
| match_specific = 1; |
| } |
| } |
| else |
| { |
| match = osabi; |
| if (sniffer->arch != bfd_arch_unknown) |
| match_specific = 1; |
| } |
| } |
| } |
| } |
| |
| 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) |
| { |
| struct gdb_osabi_handler *handler; |
| |
| if (info.osabi == GDB_OSABI_UNKNOWN) |
| { |
| /* Don't complain about an unknown OSABI. Assume the user knows |
| what they are doing. */ |
| return; |
| } |
| |
| for (handler = gdb_osabi_handler_list; handler != NULL; |
| handler = handler->next) |
| { |
| if (handler->osabi != info.osabi) |
| continue; |
| |
| /* If the architecture described by ARCH_INFO can run code for |
| the architcture 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; |
| } |
| } |
| |
| 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); |
| } |
| |
| /* 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 comtain the complete note. */ |
| if (notesz > bfd_section_size (abfd, 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 *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); |
| |
| /* Limit the amount of data to read. */ |
| if (sectsize > MAX_NOTESZ) |
| sectsize = MAX_NOTESZ; |
| |
| /* 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); |
| |
| /* .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)) |
| { |
| unsigned int abi_tag = bfd_h_get_32 (abfd, note + 16); |
| |
| switch (abi_tag) |
| { |
| case GNU_ABI_TAG_LINUX: |
| *osabi = GDB_OSABI_LINUX; |
| break; |
| |
| case GNU_ABI_TAG_HURD: |
| *osabi = GDB_OSABI_HURD; |
| break; |
| |
| case GNU_ABI_TAG_SOLARIS: |
| *osabi = GDB_OSABI_SOLARIS; |
| break; |
| |
| case GNU_ABI_TAG_FREEBSD: |
| *osabi = GDB_OSABI_FREEBSD_ELF; |
| break; |
| |
| case GNU_ABI_TAG_NETBSD: |
| *osabi = GDB_OSABI_NETBSD_ELF; |
| break; |
| |
| default: |
| warning (_("GNU ABI tag value %u unrecognized."), abi_tag); |
| break; |
| } |
| return; |
| } |
| |
| /* FreeBSD. */ |
| if (check_note (abfd, sect, note, §size, "FreeBSD", 4, |
| NT_FREEBSD_ABI_TAG)) |
| { |
| /* There is no need to check the version yet. */ |
| *osabi = GDB_OSABI_FREEBSD_ELF; |
| return; |
| } |
| |
| return; |
| } |
| |
| /* .note.netbsd.ident notes, used by NetBSD. */ |
| if (strcmp (name, ".note.netbsd.ident") == 0 |
| && check_note (abfd, sect, note, §size, "NetBSD", 4, NT_NETBSD_IDENT)) |
| { |
| /* There is no need to check the version yet. */ |
| *osabi = GDB_OSABI_NETBSD_ELF; |
| return; |
| } |
| |
| /* .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_ELF; |
| return; |
| } |
| |
| /* .note.netbsdcore.procinfo notes, used by NetBSD. */ |
| if (strcmp (name, ".note.netbsdcore.procinfo") == 0) |
| { |
| *osabi = GDB_OSABI_NETBSD_ELF; |
| return; |
| } |
| } |
| |
| static enum gdb_osabi |
| generic_elf_osabi_sniffer (bfd *abfd) |
| { |
| unsigned int elfosabi; |
| enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
| |
| elfosabi = elf_elfheader (abfd)->e_ident[EI_OSABI]; |
| |
| switch (elfosabi) |
| { |
| case ELFOSABI_NONE: |
| case ELFOSABI_GNU: |
| /* 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. */ |
| bfd_map_over_sections (abfd, |
| generic_elf_osabi_sniff_abi_tag_sections, |
| &osabi); |
| break; |
| |
| case ELFOSABI_FREEBSD: |
| osabi = GDB_OSABI_FREEBSD_ELF; |
| break; |
| |
| case ELFOSABI_NETBSD: |
| osabi = GDB_OSABI_NETBSD_ELF; |
| break; |
| |
| case ELFOSABI_SOLARIS: |
| osabi = GDB_OSABI_SOLARIS; |
| break; |
| |
| case 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). We use HP-UX ELF as the default, but let any |
| OS-specific notes override this. */ |
| osabi = GDB_OSABI_HPUX_ELF; |
| bfd_map_over_sections (abfd, |
| generic_elf_osabi_sniff_abi_tag_sections, |
| &osabi); |
| break; |
| |
| case ELFOSABI_OPENVMS: |
| osabi = GDB_OSABI_OPENVMS; |
| 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_ELF; |
| } |
| |
| return osabi; |
| } |
| |
| static void |
| set_osabi (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 if (strcmp (set_osabi_string, "none") == 0) |
| { |
| user_selected_osabi = GDB_OSABI_UNKNOWN; |
| 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)); |
| } |
| |
| extern initialize_file_ftype _initialize_gdb_osabi; /* -Wmissing-prototype */ |
| |
| void |
| _initialize_gdb_osabi (void) |
| { |
| if (strcmp (gdb_osabi_names[GDB_OSABI_INVALID].pretty, "<invalid>") != 0) |
| internal_error |
| (__FILE__, __LINE__, |
| _("_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; |
| } |