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https://sourceware.org/git/binutils-gdb.git
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18d2988e5d
Now that defs.h, server.h and common-defs.h are included via the `-include` option, it is no longer necessary for source files to include them. Remove all the inclusions of these files I could find. Update the generation scripts where relevant. Change-Id: Ia026cff269c1b7ae7386dd3619bc9bb6a5332837 Approved-By: Pedro Alves <pedro@palves.net>
170 lines
5.5 KiB
C
170 lines
5.5 KiB
C
/* Target-dependent code for NetBSD/arm.
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Copyright (C) 2002-2024 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 "osabi.h"
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#include "arch/arm.h"
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#include "arm-netbsd-tdep.h"
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#include "netbsd-tdep.h"
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#include "arm-tdep.h"
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#include "regset.h"
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#include "solib-svr4.h"
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/* Description of the longjmp buffer. */
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#define ARM_NBSD_JB_PC 24
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#define ARM_NBSD_JB_ELEMENT_SIZE ARM_INT_REGISTER_SIZE
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/* For compatibility with previous implementations of GDB on arm/NetBSD,
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override the default little-endian breakpoint. */
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static const gdb_byte arm_nbsd_arm_le_breakpoint[] = {0x11, 0x00, 0x00, 0xe6};
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static const gdb_byte arm_nbsd_arm_be_breakpoint[] = {0xe6, 0x00, 0x00, 0x11};
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static const gdb_byte arm_nbsd_thumb_le_breakpoint[] = {0xfe, 0xde};
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static const gdb_byte arm_nbsd_thumb_be_breakpoint[] = {0xde, 0xfe};
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/* This matches struct reg from NetBSD's sys/arch/arm/include/reg.h:
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https://github.com/NetBSD/src/blob/7c13e6e6773bb171f4ed3ed53013e9d24b3c1eac/sys/arch/arm/include/reg.h#L39
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*/
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struct arm_nbsd_reg
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{
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uint32_t reg[13];
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uint32_t sp;
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uint32_t lr;
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uint32_t pc;
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uint32_t cpsr;
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};
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void
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arm_nbsd_supply_gregset (const struct regset *regset, struct regcache *regcache,
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int regnum, const void *gregs, size_t len)
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{
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const arm_nbsd_reg *gregset = static_cast<const arm_nbsd_reg *>(gregs);
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gdb_assert (len >= sizeof (arm_nbsd_reg));
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/* Integer registers. */
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for (int i = ARM_A1_REGNUM; i < ARM_SP_REGNUM; i++)
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if (regnum == -1 || regnum == i)
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regcache->raw_supply (i, (char *) &gregset->reg[i]);
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if (regnum == -1 || regnum == ARM_SP_REGNUM)
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regcache->raw_supply (ARM_SP_REGNUM, (char *) &gregset->sp);
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if (regnum == -1 || regnum == ARM_LR_REGNUM)
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regcache->raw_supply (ARM_LR_REGNUM, (char *) &gregset->lr);
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if (regnum == -1 || regnum == ARM_PC_REGNUM)
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{
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CORE_ADDR r_pc = gdbarch_addr_bits_remove (regcache->arch (), gregset->pc);
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regcache->raw_supply (ARM_PC_REGNUM, (char *) &r_pc);
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}
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if (regnum == -1 || regnum == ARM_PS_REGNUM)
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{
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if (arm_apcs_32)
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regcache->raw_supply (ARM_PS_REGNUM, (char *) &gregset->cpsr);
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else
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regcache->raw_supply (ARM_PS_REGNUM, (char *) &gregset->pc);
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}
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}
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static const struct regset arm_nbsd_regset = {
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nullptr,
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arm_nbsd_supply_gregset,
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/* We don't need a collect function because we only use this reading registers
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(via iterate_over_regset_sections and fetch_regs/fetch_register). */
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nullptr,
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0
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};
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static void
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arm_nbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
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iterate_over_regset_sections_cb *cb,
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void *cb_data,
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const struct regcache *regcache)
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{
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cb (".reg", sizeof (arm_nbsd_reg), sizeof (arm_nbsd_reg), &arm_nbsd_regset,
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NULL, cb_data);
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/* cbiesinger/2020-02-12 -- as far as I can tell, ARM/NetBSD does
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not write any floating point registers into the core file (tested
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with NetBSD 9.1_RC1). When it does, this function will need to read them,
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and the arm-netbsd gdbarch will need a core_read_description function
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to return the right description for them. */
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}
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static void
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arm_netbsd_init_abi_common (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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tdep->lowest_pc = 0x8000;
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switch (info.byte_order)
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{
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case BFD_ENDIAN_LITTLE:
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tdep->arm_breakpoint = arm_nbsd_arm_le_breakpoint;
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tdep->thumb_breakpoint = arm_nbsd_thumb_le_breakpoint;
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tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_le_breakpoint);
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tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_le_breakpoint);
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break;
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case BFD_ENDIAN_BIG:
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tdep->arm_breakpoint = arm_nbsd_arm_be_breakpoint;
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tdep->thumb_breakpoint = arm_nbsd_thumb_be_breakpoint;
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tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_be_breakpoint);
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tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_be_breakpoint);
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break;
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default:
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internal_error (_("arm_gdbarch_init: bad byte order for float format"));
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}
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tdep->jb_pc = ARM_NBSD_JB_PC;
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tdep->jb_elt_size = ARM_NBSD_JB_ELEMENT_SIZE;
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set_gdbarch_iterate_over_regset_sections
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(gdbarch, arm_nbsd_iterate_over_regset_sections);
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/* Single stepping. */
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set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
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}
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static void
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arm_netbsd_elf_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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arm_netbsd_init_abi_common (info, gdbarch);
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nbsd_init_abi (info, 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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/* NetBSD ELF 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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}
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void _initialize_arm_netbsd_tdep ();
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void
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_initialize_arm_netbsd_tdep ()
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{
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gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD,
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arm_netbsd_elf_init_abi);
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}
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