mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 12:03:41 +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.
171 lines
4.4 KiB
C
171 lines
4.4 KiB
C
/* Target-dependent code for Analog Devices Blackfin processor, for GDB.
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Copyright (C) 2005-2024 Free Software Foundation, Inc.
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Contributed by Analog Devices, 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 "regcache.h"
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#include "tramp-frame.h"
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#include "trad-frame.h"
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#include "osabi.h"
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#include "xml-syscall.h"
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#include "linux-tdep.h"
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#include "bfin-tdep.h"
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/* From <asm/sigcontext.h>. */
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#define SIGCONTEXT_OFFSET 168
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static const int bfin_linux_sigcontext_reg_offset[BFIN_NUM_REGS] =
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{
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0 * 4, /* %r0 */
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1 * 4, /* %r1 */
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2 * 4, /* %r2 */
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3 * 4, /* %r3 */
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4 * 4, /* %r4 */
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5 * 4, /* %r5 */
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6 * 4, /* %r6 */
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7 * 4, /* %r7 */
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8 * 4, /* %p0 */
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9 * 4, /* %p1 */
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10 * 4, /* %p2 */
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11 * 4, /* %p3 */
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12 * 4, /* %p4 */
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13 * 4, /* %p5 */
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14 * 4, /* %sp */
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23 * 4, /* %fp */
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24 * 4, /* %i0 */
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25 * 4, /* %i1 */
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26 * 4, /* %i2 */
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27 * 4, /* %i3 */
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28 * 4, /* %m0 */
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29 * 4, /* %m1 */
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30 * 4, /* %m2 */
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31 * 4, /* %m3 */
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36 * 4, /* %b0 */
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37 * 4, /* %b1 */
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38 * 4, /* %b2 */
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39 * 4, /* %b3 */
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32 * 4, /* %l0 */
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33 * 4, /* %l1 */
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34 * 4, /* %l2 */
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35 * 4, /* %l3 */
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17 * 4, /* %a0x */
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15 * 4, /* %a0w */
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18 * 4, /* %a1x */
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16 * 4, /* %a1w */
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19 * 4, /* %astat */
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20 * 4, /* %rets */
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40 * 4, /* %lc0 */
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42 * 4, /* %lt0 */
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44 * 4, /* %lb0 */
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41 * 4, /* %lc1 */
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43 * 4, /* %lt1 */
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45 * 4, /* %lb1 */
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-1, /* %cycles */
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-1, /* %cycles2 */
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-1, /* %usp */
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46 * 4, /* %seqstat */
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-1, /* syscfg */
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21 * 4, /* %reti */
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22 * 4, /* %retx */
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-1, /* %retn */
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-1, /* %rete */
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21 * 4, /* %pc */
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};
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/* Signal trampolines. */
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static void
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bfin_linux_sigframe_init (const struct tramp_frame *self,
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frame_info_ptr this_frame,
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struct trad_frame_cache *this_cache,
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CORE_ADDR func)
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{
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CORE_ADDR sp = get_frame_sp (this_frame);
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CORE_ADDR pc = get_frame_pc (this_frame);
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CORE_ADDR sigcontext = sp + SIGCONTEXT_OFFSET;
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const int *reg_offset = bfin_linux_sigcontext_reg_offset;
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int i;
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for (i = 0; i < BFIN_NUM_REGS; i++)
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if (reg_offset[i] != -1)
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trad_frame_set_reg_addr (this_cache, i, sigcontext + reg_offset[i]);
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/* This would come after the LINK instruction in the ret_from_signal
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function, hence the frame id would be SP + 8. */
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trad_frame_set_id (this_cache, frame_id_build (sp + 8, pc));
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}
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static const struct tramp_frame bfin_linux_sigframe =
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{
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SIGTRAMP_FRAME,
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4,
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{
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{ 0x00ADE128, 0xffffffff }, /* P0 = __NR_rt_sigreturn; */
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{ 0x00A0, 0xffff }, /* EXCPT 0; */
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{ TRAMP_SENTINEL_INSN, ULONGEST_MAX },
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},
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bfin_linux_sigframe_init,
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};
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static LONGEST
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bfin_linux_get_syscall_number (struct gdbarch *gdbarch,
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thread_info *thread)
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{
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struct regcache *regcache = get_thread_regcache (thread);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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/* The content of a register. */
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gdb_byte buf[4];
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/* The result. */
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LONGEST ret;
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/* Getting the system call number from the register.
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When dealing with Blackfin architecture, this information
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is stored at %p0 register. */
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regcache->cooked_read (BFIN_P0_REGNUM, buf);
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ret = extract_signed_integer (buf, 4, byte_order);
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return ret;
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}
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static void
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bfin_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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linux_init_abi (info, gdbarch, 0);
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/* Set the sigtramp frame sniffer. */
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tramp_frame_prepend_unwinder (gdbarch, &bfin_linux_sigframe);
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/* Functions for 'catch syscall'. */
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set_xml_syscall_file_name (gdbarch, "syscalls/bfin-linux.xml");
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set_gdbarch_get_syscall_number (gdbarch,
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bfin_linux_get_syscall_number);
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}
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void _initialize_bfin_linux_tdep ();
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void
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_initialize_bfin_linux_tdep ()
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{
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gdbarch_register_osabi (bfd_arch_bfin, 0, GDB_OSABI_LINUX,
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bfin_linux_init_abi);
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}
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