e1f58301dd
* regformats/reg-tilegx.dat (name): Change abi name to "tilegx". * regformats/reg-tilegx32.dat: New. gdbserver/ * Makefile.in (clean): Remove reg-tilegx.c, reg-tilegx32.c. (reg-tilegx32.c): New rule. * configure.srv (tilegx-*-linux*): Add reg-tilegx32.o to srv_regobj. * linux-tile-low.c (tile_arch_setup): New function. Invoke different register info initializer according to elf class. (init_registers_tilgx32): New function. The tilegx32 register info initializer. (tile_fill_gregset): Use "uint_reg_t" to represent register size. (tile_store_gregset): Likewise.
163 lines
3.7 KiB
C
163 lines
3.7 KiB
C
/* GNU/Linux/TILE-Gx specific low level interface, GDBserver.
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Copyright (C) 2012-2013 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 <sys/ptrace.h>
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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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/* Defined in auto-generated file reg-tilegx32.c. */
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void init_registers_tilegx32 (void);
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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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static int
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tile_cannot_fetch_register (int regno)
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{
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if (regno >= 0 && regno < 56)
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return 0;
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else if (regno == 64)
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return 0;
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else
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return 1;
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}
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static int
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tile_cannot_store_register (int regno)
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{
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if (regno >= 0 && regno < 56)
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return 0;
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else if (regno == 64)
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return 0;
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else
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return 1;
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}
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static CORE_ADDR
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tile_get_pc (struct regcache *regcache)
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{
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unsigned long pc;
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collect_register_by_name (regcache, "pc", &pc);
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return pc;
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}
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static void
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tile_set_pc (struct regcache *regcache, CORE_ADDR pc)
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{
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unsigned long newpc = pc;
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supply_register_by_name (regcache, "pc", &newpc);
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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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static int
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tile_breakpoint_at (CORE_ADDR where)
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{
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uint64_t insn;
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(*the_target->read_memory) (where, (unsigned char *) &insn, 8);
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if (insn == tile_breakpoint)
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return 1;
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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 0;
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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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struct regset_info target_regsets[] =
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{
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{ PTRACE_GETREGS, PTRACE_SETREGS, 0, tile_num_regs * 4,
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GENERAL_REGS, tile_fill_gregset, tile_store_gregset },
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{ 0, 0, 0, -1, -1, NULL, NULL }
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};
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static void
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tile_arch_setup (void)
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{
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int pid = pid_of (get_thread_lwp (current_inferior));
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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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init_registers_tilegx32();
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else
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init_registers_tilegx();
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}
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struct linux_target_ops the_low_target =
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{
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tile_arch_setup,
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tile_num_regs,
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tile_regmap,
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NULL,
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tile_cannot_fetch_register,
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tile_cannot_store_register,
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NULL,
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tile_get_pc,
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tile_set_pc,
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(const unsigned char *) &tile_breakpoint,
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tile_breakpoint_len,
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NULL,
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0,
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tile_breakpoint_at,
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};
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