ac04f72bb4
gdb has to inform libcc1.so of the target being used, so that the correct compiler can be invoked. The compiler is invoked using the GNU configury triplet prefix, e.g., "x86_64-unknown-linux-gnu-gcc". In order for this to work we need to map the gdbarch to the GNU configury triplet arch. In most cases these are identical; however, the x86 family poses some problems, as the BFD arch names are quite different from the GNU triplet names. So, we introduce a new gdbarch method for this. A regular expression is used because there are various valid values for the arch prefix in the triplet. This patch also updates the osabi code to associate a regular expression with the OS ABI. I have only added a concrete value for Linux. Note that the "-gnu" part is optional, at least on Fedora it is omitted from the installed GCC executable's name. gdb/ChangeLog 2014-12-12 Tom Tromey <tromey@redhat.com> Jan Kratochvil <jan.kratochvil@redhat.com> * osabi.h (osabi_triplet_regexp): Declare. * osabi.c (struct osabi_names): New. (gdb_osabi_names): Change type to struct osabi_names. Update values. (gdbarch_osabi_name): Update. (osabi_triplet_regexp): New function. (osabi_from_tdesc_string, _initialize_gdb_osabi): Update. * i386-tdep.c (i386_gnu_triplet_regexp): New method. (i386_elf_init_abi, i386_go32_init_abi, i386_gdbarch_init): Call set_gdbarch_gnu_triplet_regexp. * gdbarch.sh (gnu_triplet_regexp): New method. * gdbarch.c, gdbarch.h: Rebuild. * arch-utils.h (default_gnu_triplet_regexp): Declare. * arch-utils.c (default_gnu_triplet_regexp): New function.
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/* OS ABI variant handling for GDB.
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Copyright (C) 2001-2014 Free Software Foundation, Inc.
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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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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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(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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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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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef OSABI_H
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#define OSABI_H
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/* Register an OS ABI sniffer. Each arch/flavour may have more than
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one sniffer. This is used to e.g. differentiate one OS's a.out from
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another. The first sniffer to return something other than
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GDB_OSABI_UNKNOWN wins, so a sniffer should be careful to claim a file
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only if it knows for sure what it is. */
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void gdbarch_register_osabi_sniffer (enum bfd_architecture,
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enum bfd_flavour,
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enum gdb_osabi (*)(bfd *));
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/* Register a handler for an OS ABI variant for a given architecture
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and machine type. There should be only one handler for a given OS
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ABI for each architecture and machine type combination. */
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void gdbarch_register_osabi (enum bfd_architecture, unsigned long,
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enum gdb_osabi,
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void (*)(struct gdbarch_info,
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struct gdbarch *));
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/* Lookup the OS ABI corresponding to the specified BFD. */
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enum gdb_osabi gdbarch_lookup_osabi (bfd *);
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/* Lookup the OS ABI corresponding to the specified target description
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string. */
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enum gdb_osabi osabi_from_tdesc_string (const char *text);
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/* Initialize the gdbarch for the specified OS ABI variant. */
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void gdbarch_init_osabi (struct gdbarch_info, struct gdbarch *);
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/* Return the name of the specified OS ABI. */
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const char *gdbarch_osabi_name (enum gdb_osabi);
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/* Return a regular expression that matches the OS part of a GNU
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configury triplet for the given OSABI. */
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const char *osabi_triplet_regexp (enum gdb_osabi osabi);
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/* Helper routine for ELF file sniffers. This looks at ABI tag note
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sections to determine the OS ABI from the note. It should be called
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via bfd_map_over_sections. */
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void generic_elf_osabi_sniff_abi_tag_sections (bfd *, asection *, void *);
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#endif /* OSABI_H */
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