| /* GNU/Linux/TILE-Gx specific low level interface, GDBserver. |
| |
| Copyright (C) 2012 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "server.h" |
| #include "linux-low.h" |
| |
| #include <sys/ptrace.h> |
| |
| /* Defined in auto-generated file reg-tile.c. */ |
| void init_registers_tile (void); |
| |
| #define tile_num_regs 65 |
| |
| static int tile_regmap[] = |
| { |
| 0, 1, 2, 3, 4, 5, 6, 7, |
| 8, 9, 10, 11, 12, 13, 14, 15, |
| 16, 17, 18, 19, 20, 21, 22, 23, |
| 24, 25, 26, 27, 28, 29, 30, 31, |
| 32, 33, 34, 35, 36, 37, 38, 39, |
| 40, 41, 42, 43, 44, 45, 46, 47, |
| 48, 49, 50, 51, 52, 53, 54, 55, |
| -1, -1, -1, -1, -1, -1, -1, -1, |
| 56 |
| }; |
| |
| static int |
| tile_cannot_fetch_register (int regno) |
| { |
| if (regno >= 0 && regno < 56) |
| return 0; |
| else if (regno == 64) |
| return 0; |
| else |
| return 1; |
| } |
| |
| static int |
| tile_cannot_store_register (int regno) |
| { |
| if (regno >= 0 && regno < 56) |
| return 0; |
| else if (regno == 64) |
| return 0; |
| else |
| return 1; |
| } |
| |
| static CORE_ADDR |
| tile_get_pc (struct regcache *regcache) |
| { |
| unsigned long pc; |
| |
| collect_register_by_name (regcache, "pc", &pc); |
| return pc; |
| } |
| |
| static void |
| tile_set_pc (struct regcache *regcache, CORE_ADDR pc) |
| { |
| unsigned long newpc = pc; |
| |
| supply_register_by_name (regcache, "pc", &newpc); |
| } |
| |
| static uint64_t tile_breakpoint = 0x400b3cae70166000ULL; |
| #define tile_breakpoint_len 8 |
| |
| static int |
| tile_breakpoint_at (CORE_ADDR where) |
| { |
| uint64_t insn; |
| |
| (*the_target->read_memory) (where, (unsigned char *) &insn, 8); |
| if (insn == tile_breakpoint) |
| return 1; |
| |
| /* If necessary, recognize more trap instructions here. GDB only uses the |
| one. */ |
| return 0; |
| } |
| |
| static void |
| tile_fill_gregset (struct regcache *regcache, void *buf) |
| { |
| int i; |
| |
| for (i = 0; i < tile_num_regs; i++) |
| if (tile_regmap[i] != -1) |
| collect_register (regcache, i, ((unsigned int *) buf) + tile_regmap[i]); |
| } |
| |
| static void |
| tile_store_gregset (struct regcache *regcache, const void *buf) |
| { |
| int i; |
| |
| for (i = 0; i < tile_num_regs; i++) |
| if (tile_regmap[i] != -1) |
| supply_register (regcache, i, ((unsigned long *) buf) + tile_regmap[i]); |
| } |
| |
| struct regset_info target_regsets[] = |
| { |
| { PTRACE_GETREGS, PTRACE_SETREGS, 0, tile_num_regs * 4, |
| GENERAL_REGS, tile_fill_gregset, tile_store_gregset }, |
| { 0, 0, 0, -1, -1, NULL, NULL } |
| }; |
| |
| struct linux_target_ops the_low_target = |
| { |
| init_registers_tile, |
| tile_num_regs, |
| tile_regmap, |
| NULL, |
| tile_cannot_fetch_register, |
| tile_cannot_store_register, |
| NULL, |
| tile_get_pc, |
| tile_set_pc, |
| (const unsigned char *) &tile_breakpoint, |
| tile_breakpoint_len, |
| NULL, |
| 0, |
| tile_breakpoint_at, |
| }; |