mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-03-07 13:39:43 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
/* Target-dependent code for OpenBSD/arm.
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Copyright (C) 2006-2024 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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#include "defs.h"
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#include "osabi.h"
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#include "trad-frame.h"
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#include "tramp-frame.h"
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#include "obsd-tdep.h"
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#include "arm-tdep.h"
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#include "solib-svr4.h"
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/* Signal trampolines. */
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static void
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armobsd_sigframe_init (const struct tramp_frame *self,
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frame_info_ptr this_frame,
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struct trad_frame_cache *cache,
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CORE_ADDR func)
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{
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CORE_ADDR sp, sigcontext_addr, addr;
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int regnum;
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/* We find the appropriate instance of `struct sigcontext' at a
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fixed offset in the signal frame. */
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sp = get_frame_register_signed (this_frame, ARM_SP_REGNUM);
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sigcontext_addr = sp + 16;
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/* PC. */
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trad_frame_set_reg_addr (cache, ARM_PC_REGNUM, sigcontext_addr + 76);
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/* GPRs. */
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for (regnum = ARM_A1_REGNUM, addr = sigcontext_addr + 12;
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regnum <= ARM_LR_REGNUM; regnum++, addr += 4)
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trad_frame_set_reg_addr (cache, regnum, addr);
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trad_frame_set_id (cache, frame_id_build (sp, func));
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}
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static const struct tramp_frame armobsd_sigframe =
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{
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SIGTRAMP_FRAME,
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4,
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{
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{ 0xe28d0010, ULONGEST_MAX }, /* add r0, sp, #16 */
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{ 0xef000067, ULONGEST_MAX }, /* swi SYS_sigreturn */
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{ 0xef000001, ULONGEST_MAX }, /* swi SYS_exit */
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{ 0xeafffffc, ULONGEST_MAX }, /* b . - 8 */
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{ TRAMP_SENTINEL_INSN, ULONGEST_MAX }
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},
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armobsd_sigframe_init
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};
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/* Override default thumb breakpoints. */
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static const gdb_byte arm_obsd_thumb_le_breakpoint[] = {0xfe, 0xdf};
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static const gdb_byte arm_obsd_thumb_be_breakpoint[] = {0xdf, 0xfe};
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static void
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armobsd_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch)
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{
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arm_gdbarch_tdep *tdep = gdbarch_tdep<arm_gdbarch_tdep> (gdbarch);
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if (tdep->fp_model == ARM_FLOAT_AUTO)
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tdep->fp_model = ARM_FLOAT_SOFT_VFP;
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tramp_frame_prepend_unwinder (gdbarch, &armobsd_sigframe);
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/* OpenBSD/arm uses SVR4-style shared libraries. */
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set_solib_svr4_fetch_link_map_offsets
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(gdbarch, svr4_ilp32_fetch_link_map_offsets);
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set_gdbarch_skip_solib_resolver (gdbarch, obsd_skip_solib_resolver);
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tdep->jb_pc = 24;
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tdep->jb_elt_size = 4;
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set_gdbarch_iterate_over_regset_sections
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(gdbarch, armbsd_iterate_over_regset_sections);
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/* OpenBSD/arm uses -fpcc-struct-return by default. */
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tdep->struct_return = pcc_struct_return;
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/* Single stepping. */
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set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
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/* Breakpoints. */
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switch (info.byte_order)
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{
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case BFD_ENDIAN_BIG:
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tdep->thumb_breakpoint = arm_obsd_thumb_be_breakpoint;
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tdep->thumb_breakpoint_size = sizeof (arm_obsd_thumb_be_breakpoint);
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break;
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case BFD_ENDIAN_LITTLE:
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tdep->thumb_breakpoint = arm_obsd_thumb_le_breakpoint;
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tdep->thumb_breakpoint_size = sizeof (arm_obsd_thumb_le_breakpoint);
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break;
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}
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}
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void _initialize_armobsd_tdep ();
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void
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_initialize_armobsd_tdep ()
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{
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gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_OPENBSD,
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armobsd_init_abi);
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}
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