forked from Imagelibrary/binutils-gdb
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.
134 lines
3.7 KiB
C
134 lines
3.7 KiB
C
/* Target-dependent code for NetBSD/amd64.
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Copyright (C) 2003-2024 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 "arch-utils.h"
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#include "frame.h"
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#include "gdbcore.h"
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#include "osabi.h"
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#include "symtab.h"
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#include "amd64-tdep.h"
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#include "gdbsupport/x86-xstate.h"
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#include "netbsd-tdep.h"
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#include "solib-svr4.h"
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/* Support for signal handlers. */
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/* Return whether THIS_FRAME corresponds to a NetBSD sigtramp
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routine. */
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static int
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amd64nbsd_sigtramp_p (frame_info_ptr this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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const char *name;
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find_pc_partial_function (pc, &name, NULL, NULL);
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return nbsd_pc_in_sigtramp (pc, name);
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}
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/* Assuming THIS_FRAME corresponds to a NetBSD sigtramp routine,
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return the address of the associated mcontext structure. */
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static CORE_ADDR
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amd64nbsd_mcontext_addr (frame_info_ptr this_frame)
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{
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CORE_ADDR addr;
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/* The register %r15 points at `struct ucontext' upon entry of a
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signal trampoline. */
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addr = get_frame_register_unsigned (this_frame, AMD64_R15_REGNUM);
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/* The mcontext structure lives as offset 56 in `struct ucontext'. */
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return addr + 56;
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}
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/* NetBSD 2.0 or later. */
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/* Mapping between the general-purpose registers in `struct reg'
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format and GDB's register cache layout. */
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/* From <machine/reg.h>. */
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int amd64nbsd_r_reg_offset[] =
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{
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14 * 8, /* %rax */
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13 * 8, /* %rbx */
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3 * 8, /* %rcx */
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2 * 8, /* %rdx */
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1 * 8, /* %rsi */
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0 * 8, /* %rdi */
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12 * 8, /* %rbp */
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24 * 8, /* %rsp */
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4 * 8, /* %r8 .. */
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5 * 8,
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6 * 8,
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7 * 8,
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8 * 8,
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9 * 8,
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10 * 8,
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11 * 8, /* ... %r15 */
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21 * 8, /* %rip */
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23 * 8, /* %eflags */
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22 * 8, /* %cs */
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25 * 8, /* %ss */
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18 * 8, /* %ds */
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17 * 8, /* %es */
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16 * 8, /* %fs */
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15 * 8 /* %gs */
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};
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static void
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amd64nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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i386_gdbarch_tdep *tdep = gdbarch_tdep<i386_gdbarch_tdep> (gdbarch);
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/* Initialize general-purpose register set details first. */
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tdep->gregset_reg_offset = amd64nbsd_r_reg_offset;
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tdep->gregset_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset);
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tdep->sizeof_gregset = 26 * 8;
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amd64_init_abi (info, gdbarch,
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amd64_target_description (X86_XSTATE_SSE_MASK, true));
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nbsd_init_abi (info, gdbarch);
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tdep->jb_pc_offset = 7 * 8;
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/* NetBSD has its own convention for signal trampolines. */
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tdep->sigtramp_p = amd64nbsd_sigtramp_p;
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tdep->sigcontext_addr = amd64nbsd_mcontext_addr;
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tdep->sc_reg_offset = amd64nbsd_r_reg_offset;
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tdep->sc_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset);
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/* NetBSD uses SVR4-style shared libraries. */
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set_solib_svr4_fetch_link_map_offsets
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(gdbarch, svr4_lp64_fetch_link_map_offsets);
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}
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void _initialize_amd64nbsd_tdep ();
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void
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_initialize_amd64nbsd_tdep ()
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{
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/* The NetBSD/amd64 native dependent code makes this assumption. */
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gdb_assert (ARRAY_SIZE (amd64nbsd_r_reg_offset) == AMD64_NUM_GREGS);
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gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
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GDB_OSABI_NETBSD, amd64nbsd_init_abi);
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}
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