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Diffstat (limited to 'gdb/arm-symbian-tdep.c')
| -rw-r--r-- | gdb/arm-symbian-tdep.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/gdb/arm-symbian-tdep.c b/gdb/arm-symbian-tdep.c deleted file mode 100644 index 2bd0db9..0000000 --- a/gdb/arm-symbian-tdep.c +++ /dev/null @@ -1,132 +0,0 @@ -/* ARM Symbian OS target support. - - Copyright (C) 2008-2021 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 "frame.h" -#include "objfiles.h" -#include "osabi.h" -#include "solib.h" -#include "solib-target.h" -#include "target.h" -#include "elf-bfd.h" - -/* If PC is in a DLL import stub, return the address of the `real' - function belonging to the stub. */ - -static CORE_ADDR -arm_symbian_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc) -{ - struct gdbarch *gdbarch; - enum bfd_endian byte_order; - ULONGEST insn; - CORE_ADDR dest; - gdb_byte buf[4]; - - if (!in_plt_section (pc)) - return 0; - - if (target_read_memory (pc, buf, 4) != 0) - return 0; - - gdbarch = get_frame_arch (frame); - byte_order = gdbarch_byte_order (gdbarch); - - /* ldr pc, [pc, #-4]. */ - insn = extract_unsigned_integer (buf, 4, byte_order); - if (insn != 0xe51ff004) - return 0; - - if (target_read_memory (pc + 4, buf, 4) != 0) - return 0; - - dest = extract_unsigned_integer (buf, 4, byte_order); - return gdbarch_addr_bits_remove (gdbarch, dest); -} - -static void -arm_symbian_init_abi (struct gdbarch_info info, - struct gdbarch *gdbarch) -{ - /* Shared library handling. */ - set_gdbarch_skip_trampoline_code (gdbarch, arm_symbian_skip_trampoline_code); - - /* On this target, the toolchain outputs ELF files, with `sym' for - filename extension (e.g., `FOO.sym'); these are post-linker - processed into PE-ish DLLs (e.g., `FOO.dll'), and it's these that - are actually copied to and run on the target. Naturally, when - listing shared libraries, Symbian stubs report the DLL filenames. - Setting this makes it so that GDB automatically looks for the - corresponding ELF files on the host's filesystem. */ - set_gdbarch_solib_symbols_extension (gdbarch, "sym"); - - /* Canonical paths on this target look like `c:\sys\bin\bar.dll', - for example. */ - set_gdbarch_has_dos_based_file_system (gdbarch, 1); - - set_solib_ops (gdbarch, &solib_target_so_ops); -} - -/* Recognize Symbian object files. */ - -static enum gdb_osabi -arm_symbian_osabi_sniffer (bfd *abfd) -{ - Elf_Internal_Phdr *phdrs; - long phdrs_size; - int num_phdrs, i; - - /* Symbian executables are always shared objects (ET_DYN). */ - if (elf_elfheader (abfd)->e_type == ET_EXEC) - return GDB_OSABI_UNKNOWN; - - if (elf_elfheader (abfd)->e_ident[EI_OSABI] != ELFOSABI_NONE) - return GDB_OSABI_UNKNOWN; - - /* Check for the ELF headers not being part of any PT_LOAD segment. - Symbian is the only GDB supported (or GNU binutils supported) ARM - target which uses a postlinker to flatten ELF files, dropping the - ELF dynamic info in the process. */ - phdrs_size = bfd_get_elf_phdr_upper_bound (abfd); - if (phdrs_size == -1) - return GDB_OSABI_UNKNOWN; - - phdrs = (Elf_Internal_Phdr *) alloca (phdrs_size); - num_phdrs = bfd_get_elf_phdrs (abfd, phdrs); - if (num_phdrs == -1) - return GDB_OSABI_UNKNOWN; - - for (i = 0; i < num_phdrs; i++) - if (phdrs[i].p_type == PT_LOAD && phdrs[i].p_offset == 0) - return GDB_OSABI_UNKNOWN; - - /* Looks like a Symbian binary. */ - return GDB_OSABI_SYMBIAN; -} - -void _initialize_arm_symbian_tdep (); -void -_initialize_arm_symbian_tdep () -{ - gdbarch_register_osabi_sniffer (bfd_arch_arm, - bfd_target_elf_flavour, - arm_symbian_osabi_sniffer); - - gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_SYMBIAN, - arm_symbian_init_abi); -} |