gdbserver: remove support for Tile
This port has been unmaintained for years and the upstream Linux kernel does not support this architecture anymore, remove it. gdbserver/ChangeLog: * Makefile.in (SFILES): linux-tile-low.cc. * configure.srv: Remove tilegx case. * linux-tile-low.cc: Remove. Change-Id: I1c2910d04ddbd6013e5d228047106b41d80f9477
This commit is contained in:
Simon Marchi
parent
bd1467aee8
commit
96c16e2b7f
@ -1,3 +1,9 @@
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2020-06-12 Simon Marchi <simon.marchi@efficios.com>
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* Makefile.in (SFILES): linux-tile-low.cc.
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* configure.srv: Remove tilegx case.
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* linux-tile-low.cc: Remove.
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2020-06-12 Simon Marchi <simon.marchi@efficios.com>
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* Makefile.in (SFILES): Remove linux-m32r-low.cc.
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@ -190,7 +190,6 @@ SFILES = \
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$(srcdir)/linux-s390-low.cc \
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$(srcdir)/linux-sh-low.cc \
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$(srcdir)/linux-sparc-low.cc \
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$(srcdir)/linux-tile-low.cc \
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$(srcdir)/linux-x86-low.cc \
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$(srcdir)/linux-xtensa-low.cc \
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$(srcdir)/mem-break.cc \
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@ -375,12 +375,6 @@ case "${gdbserver_host}" in
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srv_linux_regsets=yes
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srv_linux_thread_db=yes
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;;
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tilegx-*-linux*) srv_regobj=reg-tilegx.o
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srv_regobj="${srv_regobj} reg-tilegx32.o"
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srv_tgtobj="$srv_linux_obj linux-tile-low.o"
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srv_linux_regsets=yes
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srv_linux_thread_db=yes
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;;
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*)
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# Who are you?
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UNSUPPORTED=1
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@ -1,227 +0,0 @@
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/* GNU/Linux/TILE-Gx specific low level interface, GDBserver.
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Copyright (C) 2012-2020 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 "server.h"
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#include "linux-low.h"
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#include <arch/abi.h>
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#include "nat/gdb_ptrace.h"
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/* Linux target op definitions for the TILE-Gx architecture. */
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class tile_target : public linux_process_target
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{
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public:
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const regs_info *get_regs_info () override;
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const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
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protected:
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void low_arch_setup () override;
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bool low_cannot_fetch_register (int regno) override;
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bool low_cannot_store_register (int regno) override;
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bool low_supports_breakpoints () override;
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CORE_ADDR low_get_pc (regcache *regcache) override;
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void low_set_pc (regcache *regcache, CORE_ADDR newpc) override;
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bool low_breakpoint_at (CORE_ADDR pc) override;
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};
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/* The singleton target ops object. */
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static tile_target the_tile_target;
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bool
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tile_target::low_supports_breakpoints ()
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{
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return true;
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}
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CORE_ADDR
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tile_target::low_get_pc (regcache *regcache)
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{
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return linux_get_pc_64bit (regcache);
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}
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void
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tile_target::low_set_pc (regcache *regcache, CORE_ADDR pc)
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{
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linux_set_pc_64bit (regcache, pc);
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}
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/* Defined in auto-generated file reg-tilegx.c. */
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void init_registers_tilegx (void);
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extern const struct target_desc *tdesc_tilegx;
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/* Defined in auto-generated file reg-tilegx32.c. */
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void init_registers_tilegx32 (void);
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extern const struct target_desc *tdesc_tilegx32;
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#define tile_num_regs 65
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static int tile_regmap[] =
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{
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23,
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24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39,
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40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55,
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-1, -1, -1, -1, -1, -1, -1, -1,
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56
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};
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bool
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tile_target::low_cannot_fetch_register (int regno)
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{
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if (regno >= 0 && regno < 56)
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return false;
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else if (regno == 64)
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return false;
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else
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return true;
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}
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bool
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tile_target::low_cannot_store_register (int regno)
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{
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if (regno >= 0 && regno < 56)
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return false;
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else if (regno == 64)
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return false;
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else
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return true;
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}
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static uint64_t tile_breakpoint = 0x400b3cae70166000ULL;
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#define tile_breakpoint_len 8
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/* Implementation of target ops method "sw_breakpoint_from_kind". */
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const gdb_byte *
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tile_target::sw_breakpoint_from_kind (int kind, int *size)
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{
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*size = tile_breakpoint_len;
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return (const gdb_byte *) &tile_breakpoint;
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}
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bool
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tile_target::low_breakpoint_at (CORE_ADDR where)
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{
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uint64_t insn;
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read_memory (where, (unsigned char *) &insn, 8);
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if (insn == tile_breakpoint)
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return true;
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/* If necessary, recognize more trap instructions here. GDB only uses the
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one. */
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return false;
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}
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static void
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tile_fill_gregset (struct regcache *regcache, void *buf)
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{
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int i;
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for (i = 0; i < tile_num_regs; i++)
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if (tile_regmap[i] != -1)
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collect_register (regcache, i, ((uint_reg_t *) buf) + tile_regmap[i]);
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}
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static void
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tile_store_gregset (struct regcache *regcache, const void *buf)
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{
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int i;
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for (i = 0; i < tile_num_regs; i++)
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if (tile_regmap[i] != -1)
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supply_register (regcache, i, ((uint_reg_t *) buf) + tile_regmap[i]);
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}
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static struct regset_info tile_regsets[] =
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{
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{ PTRACE_GETREGS, PTRACE_SETREGS, 0, tile_num_regs * 8,
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GENERAL_REGS, tile_fill_gregset, tile_store_gregset },
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NULL_REGSET
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};
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static struct regsets_info tile_regsets_info =
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{
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tile_regsets, /* regsets */
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0, /* num_regsets */
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NULL, /* disabled_regsets */
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};
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static struct usrregs_info tile_usrregs_info =
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{
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tile_num_regs,
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tile_regmap,
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};
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static struct regs_info myregs_info =
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{
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NULL, /* regset_bitmap */
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&tile_usrregs_info,
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&tile_regsets_info,
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};
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const regs_info *
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tile_target::get_regs_info ()
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{
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return &myregs_info;
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}
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void
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tile_target::low_arch_setup ()
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{
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int pid = pid_of (current_thread);
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unsigned int machine;
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int is_elf64 = linux_pid_exe_is_elf_64_file (pid, &machine);
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if (sizeof (void *) == 4)
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if (is_elf64 > 0)
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error (_("Can't debug 64-bit process with 32-bit GDBserver"));
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if (!is_elf64)
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current_process ()->tdesc = tdesc_tilegx32;
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else
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current_process ()->tdesc = tdesc_tilegx;
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}
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/* The linux target ops object. */
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linux_process_target *the_linux_target = &the_tile_target;
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void
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initialize_low_arch (void)
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{
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init_registers_tilegx32();
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init_registers_tilegx();
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initialize_regsets_info (&tile_regsets_info);
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}
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