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bd2b40ac12
This changes GDB to use frame_info_ptr instead of frame_info *
The substitution was done with multiple sequential `sed` commands:
sed 's/^struct frame_info;/class frame_info_ptr;/'
sed 's/struct frame_info \*/frame_info_ptr /g' - which left some
issues in a few files, that were manually fixed.
sed 's/\<frame_info \*/frame_info_ptr /g'
sed 's/frame_info_ptr $/frame_info_ptr/g' - used to remove whitespace
problems.
The changed files were then manually checked and some 'sed' changes
undone, some constructors and some gets were added, according to what
made sense, and what Tromey originally did
Co-Authored-By: Bruno Larsen <blarsen@redhat.com>
Approved-by: Tom Tomey <tom@tromey.com>
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) 2005-2022 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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